BE626635A - - Google Patents

Description

       

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 EMI1.1
 



  "Device for the composition boogrb1qQ8

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 EMI2.1
 The new invention relates to a process allowing, by a simple and fully automatic action of 84- loctor of individual slides on pollioule, following a determined succession, from a large number of slides, and to enlightened them? by tranaparoncet
 EMI2.2
 thus quo to project a beam of rays, modulated by the oon-
 EMI2.3
 held 4tiQgG of the slides, on a photosensitive medium * of the lagoon to be reproduced on the latter, Noua the form of an Image ltnto, following an auccevoion ot a detonated arrangement ndea wantedoo, 4as lettroop figure, oignoop words and sentences all or pcyaatt & nt the torrt1on of intervals of uno nature pre- and lu1vo.nt a prefixed arrangemento,%,

  0 report back overnoo roopoctîvoà do the slide ot content 4t18n, G projected may 0 be clouding6 or reduced aeloctivmen-t or remain înohw.G6. (The torso "slide or slide on film *
 EMI2.4
 will always be used in the following to designate the partit
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 of a photocomposition aystbmo which bears the letters, ahîto fres ot oignon - Io all being designated hereinafter briefly by the term "symbols * - k to project and which presents them to a * light source one sees do lour 40latruti-int by Zona 4to.ut transparency: rQI publications 1r.IprimÓfI 'is used in addition oot effect luo designations Ophotomateof "aaityat-'8Maot)) e <* t or analogues).

   One of the objects of the invention is 4'atto1n4rt, the otftrto J: ODt1on, .... "6 ,, above for costs 1 especially a 00 which concerned dos oygûnoa with mechanical tBOuvement CQÎ te and 8'if10 pu goulemont paroo that any gold lot, CDe..0'11 .. M '* bissent uno wear pntioul1r.mn' high 841a * wants this @ organs to notably linitsnt the speed at which the individual proGot1or ... being able to be 8UOOih1. .. Il *, and bzz file d01n91otG vir the advantages provided by r., Ro.ot1r. & 4

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 of symbols on back supporta plans - process known under the name of "photocomposition" - compared to the composition by metallic characters, these advantages being sufficiently known.



   Methods and devices are known for the production of photographic composition. They differ from each other mainly in the degree of their automation * The most recent state of the art ranges from the simplest imagesetter, manually operated and consequently slow-running, to fully automatic imagesetters, often controlled. by a perforated strip.

   The device forming the object of the present invention enables fully automatic production of photographic composition. Hold *; At the same time, the system according to the invention can be converted, by means of a simplification consisting in eliminating certain components and devices, into a semi-automatic system, the manufacturing cost of which is reduced accordingly. On the other hand, it is also possible to see a construction which, thanks to the addition of successive sub-assemblies, makes it possible to convert a very simple system, with manual control, into a system operating in a fully automatic manner.

   The aforementioned class of photocomposers, operating more or less automatically, can in turn be subdivided into main groups, namely, one comprising available. sitives based on the principle of composers known in oarao. metal, that is to say, in which the mower is simply replaced by a camera, while the other group includes devices operating according to principles not more recent.

   Regarding the first of these @ $ typo we can notice that it has very big inconvanionts, Thus,

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 EMI4.1
 an imagesetter has been proposed where photographic master characters
 EMI4.2
 tographic, provided8 with slides on film and whose shape resembles the glue of the matrixes of the fondousen lines-
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 blocks, are removed from the stores, in the desired order,
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 tie the coxaando with a perforated band or by an actuate
 EMI4.5
 manual, using a keyboard for example, are gathered and juxtaposed on lines and, after possible justification, are
 EMI4.6
 fine to move to individual mountain, in the order of lour
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 will align, one gaze from a light source, where they are illuminated.

   
 EMI4.8
 reign by transparency, so that their image is projected
 EMI4.9
 on film or photographic paper * Often the scale
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 god 150G roprodu1too is modified with the aid of rdglabloos optical systems After each doluiremont of the film, the individual dies rotate to their store with the intervention of gold; The juxtaposition of the symbols projected on the film, with a view to the formation of words, eto., is obtained at a loyal Intermittent advance of the fila after the abacus nymbol and a longitudinal expansion of the film at the end of each line oorplùto. It is understood that this method has essential drawbacks, thirst, for example, a very high speed a reason for the movements of masses, due path and ohaaing guide o0! T1p11 (]. Ué., Comprising a large number of gold.



  Ë <mc8 mJiquo8 which, all oommo Ion ellon-mtmon dies, sucked with wear = 6oanic to a considerable degree. The monitoring and maintenance of the machine are equally important. gods and aboorbnnta. Zen stores, which must be housed on the mâah1no, can only move a limited number (four in the krsir * Ma) to policoo difforeatea. For example when edo V6 car8 pa bnndo perforated, the machine does not put in a manner & J :: lt1brcmon; automatic indeed, 101'1-

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 EMI5.1
 that one wishes - or that one must - pass from one. polio <to another, one and first of all obliged to modify in the hand the distribution of determined organs.

   To cola is added the high cost of
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 This machine, owing to the large number of components, and to the fact that a certain number of models have already been sold, does not want to change the fact that the invocation is disproportionate. from an economic point of view, to the advantage obtained; Therefore, this circumstance only allows to confirm that the photographic composition as such offers
 EMI5.3
 avantngos.



  In another known system of a imagesetter # a portod1spoo1t1vo. (this tormo this called to designate in hearing the orgnno which, in a photocomposition device, carries the slides on pollioule comprising the symbol # to zoom-posor ot which will be called "porto-slides" for simplification purposes.

   It is well understood that the shape of this component and the way in which the slides to be illuminated * by transparency are arranged on it may differ from case to case) rectangular, which contains all the symbols.
 EMI5.4
 bot08, moves in the horizontal direction and the vertical direction # facing a fixed lens, so that a portion of the slide port, portion which presents the desired symbol,
 EMI5.5
 stops in front of the optic, we see its illumination by a light source.

   The inversion and subsequent deviation * of the light beam modulated by the imago of the symbol, so as to direct it on the film, are ensured by means of two mobile priams in the soft .en., With partial interposition of one or do several optics .. This system is also based on
 EMI5.6
 one of the known processes of composition by caraottrot adtal- liquoe. To ensure the projection of each symbol, / the

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 EMI6.1
 slide-holder. must 6tr <move in the horizontal
 EMI6.2
 and the vertical $ uns, in such a way that it occupies a
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 position perfectly! determined.

   To switch from one dd-ended font to another, you must remove the slide holder
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 and the reaplaosr by another. The speed of projection, 'we
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 finds' ortoxcâ t liziit3ea lori dsalomont, the disadvantage * of the system residing mainly in a large number of # ouve- monta de) OU09 in the soft senses produced mechanically as well as in the oonipliqueo oodo of these movements This is 4dJ} recognized by the weak fast .. projection (three promotions per nocondu, at most).

   We oonstato as well as the prooddd - which impinges on the mind - consisting in
 EMI6.6
 duiro do the photographic composition using
 EMI6.7
 system known in ire cor, .poacuaon with metallic caraotbres may have been taken for a reason from the least to the point of 811th most suitable. Thus, photocomposition systems have been proposed where solutions have been adopted.
 EMI6.8
 new ideas aimed at producing photogra-
 EMI6.9
 phique more quickly a complicated monk. Thus, a device has been suggested where 108 different symbols are removed supported by a porto-slide.

   About eighteen of these diaponitivce carriers that can be nmun6r adlsotivamunt and in turn
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 rdlo on record of a device comprising, for example, eight
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 diaphragma. rootangular. to hole. Each of these diaphragms.
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  and provided with a determined number of holes, arranged so
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 determined In addition, each diaphragm pout Ctro moved in the horizontal sounds or the vertical aone all the 4t1otro action. alsants who affected him hundred of the canvas so that only li, .bol0 of a ncttomcnt determined part 0 of the slide holder is ddSQa6.

   It shows the porto-dinpoo1tive. is illuminated by

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 transparency by means of a light source, it appears behind - considering the light source - the combination of diaphragms a light beam comprising the image of a nottomont determined symbol, selected by the instantaneous positions of the diaphragm, but each time in another place, to have, in the place attributed to this symbol on the slide holder.



  By a combination and a suitable arrangement of optical lenses, each beam of rays assigned a symbol is deflected so that all the symbols are projected onto a film in a desired arrangement and sequence.
 EMI7.1
 ot illuminate the latter. The width (thickness) of each symbol is recorded separately for each font in a special memory, also called a "card". The application of co system also gives liou to the mentioned disadvantages
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 above, relating to reciprocating movements and the control thereof.
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  Other ayotèmoo have also been suggested for the semi-automatic or fully automatic production of photographic composition. In one of these systems, the slide holder consists of a circular disc made of synthetic material.



  This disc contains, for example, two fonts with a total of about 180 symbols. The ef- slide holder
 EMI7.4
 makes eight revolutions per arm around an oentro, 'and a light source illuminates a film through the rotating porto-die.poe1- tïvoe, projecting a symbol on this film by rdvv. lution of the slide port. However, two policed mtsaiblue are very seldom sufficient to meet the requirements of an imagesetter for univorsello application.

   It is true that 10 porto-diapooitivoe can be replaced by hand by another, bearing a font dit-

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 EMI8.1
 ferentel however, this results in a considerable port time. On the other hand, this system is not entirely automatic.
 EMI8.2
 tick. It should also be noted that in the course of research relating to image typesetters, more and more use was made of the rotational movement, which offers many advantages.
 EMI8.3
 tagos.

   In many cases the use of a door has been advocated. Slides made up of plates formed from circular discs which sometimes carried an alphabet or a font, sometimes several alphabets or fonts. When such plates were provided with several alphabets, it was necessary
 EMI8.4
 to arrange the wedges concentrically, if one did not want to tighten them, all to the mGma diameter, on an oiroonference, nor excessively increase the diameter of the plate.



  As for the difficulties to which a canvas arrangement gave
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 take place when passing from one pole to another, oto8t - d1rot when modifying the distance of the shovel device - remain transparent with respect to the back of the plate) we have tried to eliminate them in various ways . Another
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 Disadvantage - in addition to the strictly limited number of symbols. which can be placed on a plaque - resides on oo that the diameter of the oorolo bearing the symbols of a polios decreases (towards the counter) or increases (towards the periphery) when changing alphabets, so that the lateral symbol spacings also vary.

   It is true that the angle of rotation limiting each individual symbol of each
 EMI8.7
 font may be maintained oonatttnt, however, the alto-balo surface of a bridge plate may only be used in a limited area for the reception of slides with symbols.
 EMI8.8
 Under 00 report-, employment, which has already also been suggested do porto-diapooitivo. cylindrical, is notably more

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 EMI9.1
 favornblu.

   On the side layer of these oylindro. we can say ** put on a circle read symbols of several fonts, to be illuminated with the aid of a light source located inside the nappa coat, the selection of the different symbols being ensured by a rotation of the cylinder around its longitudinal axis, while the axial displacement of the whole cylinder
 EMI9.2
 determines the desired police aelootion.

   Lon the drawbacks that this system has onooro can be divisive to those which oo mnnjfuet when a body animated by a rapid rotation has to move in the axial sounds, that is, for example, the difficulties of a guiding without play, and those which appear are 4 In auito of the rotational movement of the porto-dinpoait1vo. cylindrical during the lolairumunt of a diapoaitivo by trand- paronoo.



   The disadvantages of the clear last category will be set out below in a particular way.



     Example We will assume that the diameter of the circumference
 EMI9.3
 slides of a porto-d1npoeit1voa oons titud by a disc-shaped plate oirou- lairu or by a cylinder, is 200 mm. On the other hand, we will admit that the symbol projections must follow each other at a speed of 40 per second Like each complete revolution of the slide holder!
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 gives the projection of a single symbol, the angular velocity of the portu-aiapositivos on rotation is such that the peripheral velocity corresponding to the radius of the slide holder is 25.12 m / sec
On the other hand, if one wants - in the interest of a clear reproduction on the oxpoeed film - that,

   for the duration of or-

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 EMI10.1
 opening of an atcanical photographic shutter or during the duration of the width of the average value of a flash or electronic lightning the slide does not travel a path greater than 0.02 mm, it is necessary that the opening time of the 'shutter or the average value width of the electronic flash either
 EMI10.2
 25.120 1 1 p1 YYIIY1111 800 0.02 1.256.000 It goes from ao3, that 00 tempo of éolttlremont extrtmoment oourt can only be achieved by calling upon significant means of a mechanical or electrical nature. Another drawback of this system is that it is only possible to use
 EMI10.3
 film extremly aonoibluse Do plus, we must screw up call)

  t high density * light * solar sources The drawbacks of the short and difficult to achieve oxtrOmomen1l exposure temple at high compositing speeds can be eliminated when the slide holder moves slowly or not at all during its operation. oln1remnt.

   So for example. it has been suggested that symbols distributed in the manner of an annular aagmont on the lateral nappo of a fixed cylindrical slide holder be doloire by transparonce by means of a light source a3rau, arv, will also be arranged * in the manner of an annular segment on the la- tepal layer, the 6olairomont being made in such a way that the beam of rays supporting the imago of the symbol falls, following a radius of the cylinder, on a mirror mounted for rotation in
 EMI10.4
 the axis of the cylinder and forming an angle of 456 with respect to this axis, mirror which deflects the beam of rays in the direction of the axis of the cylinder and projects it outwards. It has also been suggested to use in this system, instead of a ring light source,

   a less extensive light source.

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 EMI11.1
 whose light was deflected by two annular mirrors # in C7.ns to 4r, towards the annular segment, occupied by the iman of symbols, of the lateral sheet forming the slide holder * It is true that, thanks to the immobilization of the slide holders, are the projected images free of blur, however? all the slides in an annular region of the cylinder are illuminated simultaneously.

   To make a slide selection.
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 determined, it is necessary that in the typos dea.a9, remt prdoox.r6s, the mirror placed at 45 performs in the axis of the oy .. linder not soulomont its own movement of rotation, = it also a displacement in the direction of the 'axis of the cylinder @ Thus, continuity is no longer assured and a
 EMI11.3
 The alternating mechanism, which, like a mechanical shutter which is its equivalent, gives rise to high wear and reduces the speed of composition.

   In addition, the wind energy (luminous intensity / surface unit) of the diamonds is very low due to the space occupied by the light source or 100 ring mirrors. Optical systems cannot be used to ensure the focusing of the beam, because their shape and size oppose it.



   The present invention takes advantage of the known advantageous properties of rotary motion, in combination with a port. fixed slides and a 45-degree mirror arranged in the axo of the
 EMI11.4
 slide holder, however, it eliminates the drawbacks enumerated above, of such a rotary movement.



   Thus, it is observed, among other things, that the duration of the or. length of a shutter or the width of the mean value of a
 EMI11.5
 flaoh dlootronlquo pout 6trio de 25.000-1 100 - instead of 1.250 * 000 "noce oocaaa this is the case in the example for

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 EMI12.1
 rotatable porto-4iapol1t1vee # although the diameter of the slide holder $ has been increased from 200 to 300 mm. The required light source, a 45 'mirror and a cabinet are the rotating bodies driven by a common control system. In the explanation relating to an exemplary embodiment, it is shown that the possible play in the bearings has no effect on the quality of the finished photographic composition.

   Cooperation
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 dt éllm.ont8 pou complicates, both mechanical and electronic8, constituted a dos essential characteristics of the object of the invention. The advancement of the perforated rudder strip and
 EMI12.3
 Ae..4t4 indicates the oepacoe and line spacing is drift, with reduced friction from the rotary motion of the single wave motor. Repairs and maintenance of the entire device are simplified as much as possible thanks to the small number of movable members and the simple construction of the electronic part.

   When, for example, cotte der-
 EMI12.4
 nity is subdivided, cosmo il uot known per se, one distinct elements ont10hableo, a1emunt replagabloop the restoration, in the event of possible defect, can be carried out by a layman having received an initiation of short duration.
 EMI12.5
 



  According to the invention, the fully automatic production of photographic composition this conditio. 100% L6ot all oore # o in the fast oompoouses automatically caused other o cyotbmeso by the presence of a code carrier. By way of example, we will cite here a perforated band, which can however be replaced by a magnetic plug, or
 EMI12.6
 cnalosuos. iOUD the commando and switching ordroD are 'axx otrw before & ± 3rd tiar le (code support. The execution of co 4tior has not been the subject of the present invention. A1nI1, the perforated band of porto governor, oomse it is known in itself,

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 EMI13.1
 water.

   In forwo do dit! 6rontol oom'bino; irwnr de prtorQt1on ', * ## signals corresponding to the different 8bQlo' grnphiquow dials 008 ounbinnioons are pvao'tdoce each 4 'uns zona- binniaon do perforation which indicates the font ot the body foroo (pointuro) back synbolcs. The interpretation and the subsequent treatment of oos oor.1bino.180nn of perforations will aloffoc- tate the raaniéxo ot in the order oi-after. We will suppose that the first one wherecbinaiaon appears on the band <5c! Ot 1! ordrvt "Folio - 1J1'otosquo", by oxonplo.

   Vana where osas, lus wignnux appearing at the exit duo oollulus photO (51ootri <iue which explore the b; .ndc purforuo, characteristic signals * for the combination aonsid6rÓo, aunt oocpnr6., In back of stages capa "ratturs, avoo all loo oonbînnieons do possible signals # ÒrTJÓ08 in the device uQ1:

  1 (1, En * au de ooïncidonoo, a 1 = pu rutntivo à tlnah lootroniquo Polaire a photocell- dlaotr, quo affoot60 to the police "Folio - Grotusquowp which has for ru'oultrt asorcor an axial movement of a non-rotating oyiindriquu diia-holder, mcuvamunt which only stops when the polios "Folio - Grott4quel, s61uotúo has been focused o'oat-à-d1o, when the iapoa1tiYo8 of Polio - Grotoaquo, which occupies a ring finger do the la- 'túralo tablecloth of the porto-slides, have <5t <5 amondon in a linear plane pr, r the flach mtatjva lamp, For pormottro the oxplo- ration by the following combination of perforations, which appears for the porfor band <5o, we take the last cotto one step forward. We will suppose that los collulfio photodluctriquos d'cl, oru.

    tion have allotÓ the order Force do corps 14. the signals supplied by the photoelectric exploration oollulus are again oonparoa ot, one case of coincidence, the laapo with flash dolairo uno oollulo photo 51uotriquo which, just as ofont the

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 EMI14.1
 had puur read, Àrtiji; .flA'i1 photoelootriquot * cell and arranged so fixed in the plane of rotation of the flashlamp ale reotdo to the body z the impulses supplied by cotte second "mo cell phOio61otr1quo being appoléos to fulfill tonna- law tiono ou1V4tODI A variable focal dintanou optic is developed until its magnification factor is oor- roopondo ruz the d3: xonoe of the 60hollo between the body strength of the 41apooitivoD Polio-Grotosquo and the body strength of 14 ddoirdos Dtautro part, a multiplioatour floor does not see impo- eo:

   a faotoar corresponds to the ratio between los dittdrento. widths (6nioDouro) back Polio-Grotouque slides ot far? o.grtlntU :: u: Jot1ont up to body 14. The advance of the oat film increased by the same rate and by the same factor. to reach the interline which is r6wltIJ ot which oorroepond to the body 14 * (It 8 * acts in or oaa of the minimum interline ad- m1se1bl. If one equals nugnyntor oot intorligno, it is necessary to foresee on the perforated strip do governs a combination of per- tomt1ona INPp16menta.1ro, which additionally doot the corresponding order- of which).

   In addition, the capacitance of a capacitor, and hence the flash intensity of the light source, this altered (increased in oo oae) t so that the light density of oymbo1oo srnPh1q, uo., Which must Ctro then projected on a film, remains constant despite the change of ooholle in relation to the aeolairéo slide considered * It is therefore unnecessary to adjust the diaphragm or the exposure time. The lunineuso density per unit area of the film. exhibit a constant trend despite the increase or decrease in breeding activity.



  The perforated plug advances a new pao, so that the first of the perforations ooabinaluona, which includes the

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 EMI15.1
 orders for the projection of the symbols of the body x4 of the poli- 00 Folio-Grotosquo, $ 0 presents one look at photo cells-
 EMI15.2
 electric explorers. also law, the signals provided
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 are comparde with all the possible combinations, the arrangement being such that at the moment when an ooo1donoo appears.
 EMI15.4
 the rotating flash lamp occupies an angular position such
 EMI15.5
 that, at the moment of the priming, the affected slide the combination of perforations which deolonohé the prim9age, and which forms part of the Folio-Grotesque font, does not find in the optical axis source light-film.

   The light source * for- la6o by the flash lamp, which illuminates the diapository by transparency, (Solaire eiuultn6nent a combination - known per se, also provided on the slide holder - of perforations (travorsablos par la. um9.èra) ot do "non-perforations * (non travoraablos par la lumière), combination which, together with the nultiplioatuur stage, mentioned above, determines the final width (6palesour) of the symbol considered, such as 'it must Otro in the case of a body 14 when, at the end of a mount, there is liou to place a space, the portor6o strip of rudder must include one or more combinai- pana for the formation of the desired space.

   In this case, it also produces a comparison in the comparatoure stage, "and the rotating flash lamp starts up when the OOQb1 '--oitt.1. Naieon of perforations provided on the slide port and corresponding to 1' space considered is in the optical axis that rolienting the flaoh lamp to the oaptour or rotary reader * By the expression "rotary sensor or reader", we must understand a system taking as many photodlectriquen cells
 EMI15.6
 Any combination of perforations provided on the slide holder may include perforations in the

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 EMI16.1
 mnx1mut1.

   This sensor is rigidly attached to the rotating shaft of the 101'1p8 rotating flash and rotates, all coma this dorez niere, continuously and at constant speed, It follows that, when it omits to compose a space, the required width occurred on the film in the = in @ way that was described in connection with a graphic symbol, except that here it
 EMI16.2
 nit, has not 4'401a1rousnt by traneparonoe of a slide. The exemplary embodiment below provides the exao ta description of the fonotionnoïMntt
Fig 1 is an overview of the system.

   For the sake of simplification, some
 EMI16.3
 tnot104W, which are however represented in other tr1 P1gd. Fig 4 shows schematically how the perforation sound combi of the perforated strip 1
 EMI16.4
 are explored, as it is known in coitus by a sensor 2, coa2titud in this case by 9 photoelootriquos cells, by Q & iJIilplo. It is dirty that a mechanical exploration of a perforated strip can only take place at a speed that can reach a maximum of 25 combinations per second} on the other hand, the systems
 EMI16.5
 Photoaloootric 4tolora.tion show noticeable speeds more olevéost In 1 ocuniddr4p example, the pi'oootion speed will be about 40 per second.

   This constitutes a speed which had not yet been reached by the processes
 EMI16.6
 do photooompoo1tion known to date. Bile no râprdsenie 4t1louo at all the achievable upper limit * ± j3 nucleiou of the 9 photoelootric cells a ... i 1 "'P1" 4- ËOëoo aTi.9 the Via 4, are respectively applied to the grill loo of "uu odbtÙM0 do 4uo- tr1odol back stages oonparatours XI ..,. do the V1Z the Lo3 cri1100 of the other duo-triode system. utJûv a.; '.. i \ tú3G by the back outputs 0011u180 photo61ootr1quoi

 <Desc / Clms Page number 17>

 
 EMI17.1
 provided b on the sensor deti luniere 6, which search the neSuo1l "4 .011dA1ro do the l # opo with rotating flash, and rotating at the same constant speed as this one.

   Thus the exploratory photoelectric cells a / k, 'to / x, o / m, d / n, 0 / o. 'jp, 6Gt ir / r ot i / o flow rospeotivocont on duo-triodes of a comparator stage K1 # .oX9. Line 4 represents the assembly of
 EMI17.2
 the oomparatour K9 stage is correlated with the photo cells *
 EMI17.3
 electric explorers î / 0, like all the other eight i'a ^ gel oomparatoure operate from the mulne mnn1r., it was
 EMI17.4
 needless to include them in the field, the anode of the
 EMI17.5
 system 43, assigned to the photodleotriqua cell z., and sees a positive voltage applied by the current source 37t los anodes affootdoe to the photod7eotriqueb a ... h r1 cells get a positive voltage from the current source amo through the & ntroaise of ddooupling rdaintancoo.

   The anode of the <y <'"tene affoot6 to the photoelectric cell has not seen my potential voltage applied just like the anodes of the duo-triode systems afteot6s to the photoelectric cells on ... r by the common voltage eouroo 36 which n 'has that the neentif one cooMun with the souroo do tension 37 # Hold the anode oon- noxiona one hundred, each through a rdoiet = col for example the roaiatanoot 35 and 561 to the grillo of a floor of coupling 34, with ohmic resistance 61evdûp common to all the connections and whose anode output is applied to the grid g2 of the hostage of r9ago 7.

   The comparatoure stages K1 ... K9 operate in the same way as known bridge assemblies
 EMI17.6
 except that, according to the invention, the diagonal branch of the bridge
 EMI17.7
 no to undergo changes quo towards the positive side regardless of that of the gentle renïetanooo of the bridge which undergoes a variation (8yetbtles 43 ot 44, F, g;) "This is represented

 <Desc / Clms Page number 18>

 
 EMI18.1
 in * the 11g 5.

   When neither the grid of the system 43 wire the l1.t ..
 EMI18.2
 do 44 no receive a positive signal, the result is that the
 EMI18.3
 two 818tèc98. tubes are blocked, that the tonnions of $ mud 'oea of current 37 and 1 as compensate Qutuol10mont through law rds1etanoQI 35 and 56 * that the bridge is in equilibrium is that it and n1tolt. at point 39 a voltage of 0 volts, or else, what this OQn8 prejudiced for the tonot1onnmont, a weak positive tonaion rdaiduellor because of the inequalities of a tube ayotèmen * (The fact that a residual positive voltage does not affect 1.J: : This is not the funciononont oonatituo an advantage, being due to the fact that, without cola, ot seen the aging ofe organs, as well as for other aspects, ion bridges should In addition dquilarda p6niblemont before each commissioning.

   Where only, org, rara relatively high potential appears one of the grills of cyetbnos 43 and 44 that the bridge risks d 8txo ddbtbalrd to the point that the positive diagonal tension which is manitou ;;. is at leemportor's memo on the potential born Catit at point 40). The ayat soul of the 34 hostage of-
 EMI18.4
 = cure blocked by the negative tension applied to point 40,
 EMI18.5
 and the grid g2 of the hostage dtacorQQS8 7 this positive. This situation only existed, however, when the crickets rented from the 9 dtagOU ocaparatoura only received a positive tan- aion from the photo61ootriquo8 cells at ....



  We will assume that all the grids of the 4teng08 compara-
 EMI18.6
 turn * are attacked by positive signals $ do every
 EMI18.7
 photoeleotric cellsa <In oxo case, all contQ.8e. in bridge are again we balance. At point 39 of pins 4 and 5, the voltage of 0 volts or a weak differential voltage is again applied, which is not, however, sufficient to make the polarized grill n6ntiYer: 1ent more positive. of

 <Desc / Clms Page number 19>

 
 EMI19.1
 stage 4. The grid g2 of the priming hostage 7 remains positive. As a third and final possibility, we will assume the case where one or more new back bridges are unbalanced.
 EMI19.2
 released because their grids have not been attacked by the potontiol metering.

   Oooi is produced when one of the photoelectric cells of receiver 2, which output on a common duo-triode, is not in the same state - either d6ola.re- nont or non-solar - as the photoelectric cell, which oorroaond do by its position, of the sensor 6, that is to say, when the condition of cell a does not correspond to glue do cell k, that the condition of cell b does not correspond to glue do cell 1, and so on.



  It appears from the stranded deck of Fig 5 that when by
 EMI19.3
 oxonplo, the grid of DY6tèo 43 has a positive potential applied by a photoelectric cell which af- tuotdu it (that is to say, the photoelectric cell i is removed through a hole in the strip perforated), while the grid of the system 44 receives the voltage 0 volts (aest.-d.xe, the cell s is not dolaireo), it follows that the system 43 becomes conductive and establishes a path between the pole posi -
 EMI19.4
 tif and the negative p81e of the current source 37, in other words, a large part of the positive voltage of the source
 EMI19.5
 current 39 is applied to point 39, which is enough to overcome the negative voltage applied to point 40, In this way,

   the grid of the coupling stage '4, where all the comparatoural stages become positive, the triode absorbs current, and the grid g2 of stage 7 becomes negative through the voltage dividing resistor 41 of the voltage divider 41 / 42. It follows that, in this case, the thyratron of hostage 7 might not prime, even in the case of

 <Desc / Clms Page number 20>

 where the negative voltage, applied to its grid gl, would be in vain
 EMI20.1
 or by a positive do d601enohenent pulse, applied by connection 10 from the photoelectric cell t ..,
When, for example, after a forward movement effected by the perforated strip 1 (fig 4),

   the punch combination
 EMI20.2
 born in this band and corresponding to the letter "L" - com. binaison which, oonne indicated in the example of fig 4 is composed of 5 perforations and of 4 "non-porforations" - is located opposite the photoleotxiquaa cells a ... i of the sensor 2, the photoelectric cells a, c, d, f and g are illuminated by the luninous source 47 and are therefore conductive. these;

   the grids, which are assigned to them, of the duo-triodes of the comparator stages ICI, K3, K4, K6 and K7 receive a positive potential, while the corresponding grids of the dtagos K2, K5, K8 ot K9 do not have such a potential,
 EMI20.3
 since the photocells b, o, h and i, which are assigned to them, are not illuminated. Laying that
 EMI20.4
 the perforated strip has a forward movement, the segment 48 of the cabinet 4- which is rigidly secured to the rotating shaft 3 and therefore also to the flash lamp 8, from the
 EMI20.5
 capacitor 13> of windows 14 and 15, of the luo1r8 sensor 19, of the tone or optics 18 and of the mirror 20 to 45. - moved in front of the sensor 6.

   Within the limits of this segment 48 are located, in the opaque lateral sheet of the blackwater, on a peripheral line passing one gaze of the cell.
 EMI20.6
 Iule photodàaotr, that u, back tip travorsabloe by the light.



  These transparent points can be used - jointly with the photoiloctric cell u which explores them and a percentage of them, not shown, placed inside the l & turalo layer of memory 4, source which illuminates all the per-

 <Desc / Clms Page number 21>

 
 EMI21.1
 drilling a vrrsentû8 on the onpteur 6 - via the conductor r \ 't to gouvurnor the avanoo pns with no bonde 61 perfora, (8 In fin in all 1 (i dots transparent or tra ^ versnbloa by the light, untie "porforationa" are in black,
 EMI21.2
 
 EMI21.3
 while all opaque tip lots are left on blanoh after will 48, as well as the other combinations of continuation. pr6 "',: roe on r.1Ó1:

  1oiro doe qui tuurno unu conatnnto speed, 130 4placont we look at the k ... n photocells of the 6p sensor that explore them, oos perforations dtnnt éoll'1.it has by 1; i oourea luoinouso r60i tÓo, no roprd- aredop Bituma on inside of the lateral layer of the black n <! <At noins a back ponta back oonparateurs floors K1 ..; K9 will be in imbalance as long as the combination of puer- forations that this sticks presented by the strip perforated to the photoelootriquos cells a.,. i of sensor 2 was not explored at the level of the ph <jtoleotrice ne *, @ cells. As
 EMI21.4
 indicated above, the grid g2 of the priming stage 7 this negative as long as a back bridges is not balanced.
 EMI21.5
 bre.

   It is often the case where the combination of porforations of ndnoiro 4, combined-in affocted with the letter 01 "t appears to equal dtmo to sensor 6 that all spawns are balanced using the grid g2 of the Anorcing hostage 7 becomes positive Uno perforation a: foot60 We add to each one different combinations of perforations of the memory 4o Aeolairo always the photudleotriquo t when a com- b1nalsQn ost oxplordo par lo oaptour 6. Consequently, in passing of each combination present on the tadnoire li., a brief positive impulse is applied by the entroniae of the connection 10 to the grid gl of the dtngo of anorçago 7.

   However, ootto icpulo1on do not need to prime 10 thyratron

 <Desc / Clms Page number 22>

 of the starting stage 7 only when the grid g2 this positive at the dull moment, that is to say, for example, when, as indicated above, the combination of perforations corresponding to the letter "L" appears at oaptor 2 and oaptor 6, so that all spawns are balanced.

   At this instant due to the ignition, the rotating flash lamp 8 also occupies such an angular position with respect to the fixed slide holder 21 that the flash of this lamp, triggered by the ignition stage 7, then lights up. having passed through the capacitor 13 and windows 14 and 15, the slide showing the symbol "L", as well as, simultaneously, the corresponding combination of perforations 17 which determines the width (thickness) of the symbol "L" and which appears on the slide port.

   The photocells of the photoelectric sensor 19 rigidly fixed to the constantly rotating shaft 3, and rotating with the latter, record at point A of FIG. 1 the information content of the perforation combination 17 in stage 31. The subsequent use of this content for the intermittent drive of the deflection mirror 4 will be discussed in the following.



  The light beam modulated by the image content of slide "L" passes through a rotating window 18 located in the optical axis of this mirror and rigidly fixed to the rotating shaft 3, which window can also be an optical system. , this beam falling, as is known per se, on the rotary plane mirror 20 disposed in the axis of rotation of the rotary shaft 3, mirror which forms an angle do 45 with the axis of rotation and with the shorter distance which separates this axis from the flash lamp, so that the light beam falling on the mirror is reflected in the direction of the axis of rotation.



   The different slides are arranged on the porto

 <Desc / Clms Page number 23>

 
 EMI23.1
 slides in such a way that all slides in one
 EMI23.2
 same font are placed following a ring-shaped sound system in the pi. r1ph6rie of the lateral layer of the slide holder, so that, 10 P o-diapoeit1ves being immobilized, all the slides aon successively intersoot by the radius axis of rotation-flash lamp of the circle described by the rotating flash lamp.

   (Ati4 that the different symbols of the slides. Lightning by tignapnronce appear. In the rotating mirror 20, always 4nna the same position in relation to the optic 2, for example always vortioalomunt # the slide sustains eonformtJffiw'nt at the inception, âiapeuéoe on the porto-diapoeiti- your 21 of the fuyon Yuprdnontdu on a gogment of the porto-41 "0- aivue dlms la liS. 2. ocoi signifia aue, on tm peripherical angle of the 900 of lob diapoa1: t1 .... e t1IQ- rant on or are from 1.140 'th turn of the axis trnnOvo14 / jul, OQIU) ;; \} held do 1 \) X'. positions roopte- tiven duna:

  HIM limited to the agio of the portditpoeitlv * <quth an angle as 906t He cionnuit qUQ..u 10 'ML voo # the diapocitivom of an 8, iulu ut mto Ql10. have <â # <1.4 do 00 to 604 around dg luur dRu tRSralt touptt tmm t. 3A position ufg1io êêeupeftt au * vo pOf'-dil1ti.), R 3bn zozo oqrolo pdrÍvhériquu quo luo diapooitiwo 4mo etglt *% Sise po1! O @ 6n; m 3tii? @ d1; @IQI 1m 00 * bl'tlki * OUIO 46 bzz r, ion âff4otdoâ 0 dià6i; tvo t do $ Mdï- l. lârgour (assa) es @ mb @ l @@, He has tm-ùto that t **% X * 1 * oomb:! fta: i.8fi do Oli !! @ \ U1ê dt: H3 ijê @ 'il \} Ol@iA1.l \ 1à1t1'0 \\: t. 1Jè: tt ionl selëg, malµ eëgeâ D 'a.m' at4e "4uw% U @ mtflâ1ft @ n apleyë 6 @ mrtà !;

   m-xïimâx 't "te bfttlèftut 10 on âurâit ën all eight oepbttë dià @ att %%. $ ï.nt pogdiblogg mijY'ti @ f @ iftJ eeaaë liâ & m ²l1fâ't ffltu,% + 4th & *

 <Desc / Clms Page number 24>

 
 EMI24.1
 cannot be used, there are still seven oomb1nai8o% tIl '.' O; f-, sible a. It goes without saying that with this subdivision of the intervals a .amble too po881fr1; e, one can use for example at most four portc! RatiOJJlJ, which give in all 16 - 1 w 15 poesibi- 11td. to check logo coabiDa1.ana. The sogmont 50, fig. 1, show the use, of three perforations maximum.

   These seven combinations * are used for the Coaçgf> gitiionii doa. j r8yaeo% the moil b whose and <mg <K! .4y lo signal (Information content) for 1, \ 400 width * of the symbols has already been étd, fJxpos60 to propo "da clabolo '7' Lorifqu'11 f 'acts do oonpoior of the intervals \! sp) fôe00) M'tro wtof it is necessary that 14 oomb1na1 sound of oocment 50 if 00 = 00pma to isopace 4doiréo is tram travel by the .un3.tc the Ia <qM' to flafit 9f so that the reader or sensor P14ot. 19 yttiwae oapter by its \ oollula photodlootri * # 24 oontom 4'tntormation of the zoom-binaison and lao trann # oJ, the hostage 51 # The rotating 3bro? Must perform uno xdrv .. amputate so that # during the passage of 8Io mont 48 an x i. 04: f '6p the enrogie-holes * 1 band is advanced dl = "@ 0 14 sheared pevfovéç must be taken. ter in captour 2 an a'f, m. attt4 At desired 1'o.paoo Q '0It ... s ... d11'8. an ooab1: m11! t'1OD \, MtilUtl ..

    she "10 sensor f! 6 explored on the 1 \ & 1011'0 wa a (SWMa. 1 & 111". flash t occupied the position au-do8wa it 1 & 5 M iµfî at wwgmwxb 0, combination which pooeido the required% m & s9 AiNfs., you that it is n008861.1'0 our 3 èas: t.'917 "4.'11".



  Il axial 4640male u .. "\ 0or" MiH 1 & 69 bi8ftiµ0fl d90- tae by opening 2 ot ooUo cH: 8Íé ',. : w o. '; 1VI' 5} the flashlight 8 * & 9? od *% ,,: 1 & <S! <sMa & 'a es segasat 10 chartered to 3.' Ol) ao 'de.1lft atissi dot ïvmêmitit by

 <Desc / Clms Page number 25>

 the sensor 19 to the hostage 31, we see its subsequent -treatment * Since a step of advancement of the recording tape a revolution of the rotary shaft 3 and a flash of the flash lamp no can occur only once in the same unit of time, the composition of spaces, as well as the accomplishment of the other operations of control, which will be described in the following,

       requires at least the same time as that required to compose a symbol. Some steering operations require a multiple of ootto duration (for example, polio change). However, in view of the high speed of rotation of the rotary shaft 3 and hence also the high speed of composition, this circumstance is irrelevant.
A fixed photoelootriquo reader 28, freeze 1, which comprises photoelectric cells acting as explorer * or analyzer organs, this fixed inside the lateral layer of the porto-slides, in such a way that the latter is not prevented from doing so. move axially in both directions.

   The slide holder is transparent over the entire angular distance occupied by the reader 28, over the entire length of the slide holder. As has already been indicated with regard to the composition of spaces, certain determined combinations of perforations in the perforated strip make it possible to selectively illuminate, by the flash of the flash lamp, not only the combinations of the segment 50, but also the various photoelectric cells of the lootour or receptor 28, cells of which a certain number have the mission to carry out the control in order to trigger an axial movement of the proto-slides, in order to operate
The selection or change of the font (fig.?) In this diagram only,

   to the

 <Desc / Clms Page number 26>

 
 EMI26.1
 a fine point of simplification, an assembly for three different fonts *, although the use of a non-rotating cylinder, one guiao of slide holders, allows to arrange a large number
 EMI26.2
 larger, fifty for example # of different fonts that can be mixed between clloa do fully automatically. The use of the perforated tape, as in the Example, which has a maximum of nine holes, and it is considered that ' a certain number of perforation combinations must be
 EMI26.3
 servdos for command orders we could set up about 200 different symbols pnr polioo, that is to say, about 10,000 different graphic oymbolos ".



  It will be assumed that the perforated strip a takes one step and
 EMI26.4
 that the signal 80 presents opposite the sensor 2 knots the forao of a determined combination of perforations, which gives the order “Gothic.” The dreary combination of holes has found on the memory 4, at the place which is analyzed by the sensor 6 at the moment when the flash lamp 8 occupies the position in which no
 EMI26.5
 lightning strikes the oollulo photo lootr1quQ 59 of oaptour 28, Pig 7. The 55 oat switch formed.

   The cathode of thyratron z2 is connected to the cathodes of thyratrons 51 and 53P as well -: that to the other cathodes of as many thyratrons as of different fonts are arranged on the slide holder. The anode of thyratron 52 is connected by switch 55 to the pole
 EMI26.6
 "positive from an unresolved current source.

   When the photocell 59 is illuminated by the light from the flashlamp, the positive chain pulse triggers thyratron 52, whereupon current flows through it, the control coil of relay 45, as well as 'an M4 electromagnetic clutch, which can however be replaced by a special drive motor. It is through this

 <Desc / Clms Page number 27>

 An electromagnetic clutch that is derived, from the same commando source which drives the shaft 3 driven by a constant rotation, the energy required for the axial and lateral displacement of the slide holder 21.

   The relay 45 attracts, ot interrupts the path 10, so that the grid gl of the firing stage 7 is pocketed to receive a trigger pulse as long as the slide holder is in motion. Simultaneously, the relay 45 opens a contact of the lead 11, so that the advance of the perforated strip is interrupted until the slide holder has set the "Gothic" font. The displacement of the porto-slide. requires more time than one revolution of the rotating shaft 3.

   To the slide holder is rigidly fixed a trot-turn 60 which, as a result of the axial displacement of this slide holder, successively opens all the contacts interposed in the anode connections of all the thyratrons assigned to the different fonts.

   It is therefore a question of contacts 54, 55 and 56 in Fig 7. When contact 55, assigned to the "Gothiquo" police, is open, the discharge is deactivated in the thy- ratron 52, and the slide holder s 'immobilizes. The trotter 60 is placed on the slide holder in such a way that when it opens the contact 55, the "Gothic" font is located in the plane defined by the rotating flash lamp * After the movement of the slide holder was shut down as a result of thyratron 52 defusing, switch 55 remains open, since frotbour 60 shuts down on its in-turn. All other oontaots,

   Affected with all other fonts, remain tomes (contact them 54 and 56 in Fig 7). Thus, any of the thyratrons assigned to these fonts can then be initiated by the solar radiation of the cell.

 <Desc / Clms Page number 28>

   photoelectric assigned to this thyratron, in sensor 28, when a combination of holes in the perforated strip issues a new order to change font. The control mechanism for the axial displacement of the slide holder has established so that the actuation of one of the two contacts 57 and 58. determines a change in direction of rotation.

   Thus, for example, if the slide holder occupies a determined position, at the moment when. the photocell 59 is illuminated and that, after ignition of the thyratron 52, the momentary direction of rotation of the slide holder control mechanism such that the trotter 60 moves away from the contact 55, the slide holder continues to move in the same direction, until it purrs against a back contacts 57 and 58. Ooux-oi are arranged at the two extreme points of the travel of the slide holder.

   The action of one of these contacts produces, by means of known means, not shown, an inversion of the direction of rotation of the drive mechanism of the slide holder, so that the latter moves in opposite direction along the path it has just traveled, going beyond its starting point, until the wiper 60, integral with this slide holder, has reached the contact 55 and opened the latter . The resulting release of the discharge deactivation in thyratron 52 has the effect of de-energizing the electromagnetic clutch M4, so that the slide holder remains in the position it does. come to occupy.

   Then the coil of relay 45, branohéo one series with the electromagnetic clutch M4, is de-energized, the armature do oe rollis drops, and the interrupted connection 10 is reestablished, so that the trigger pulses supplied by the photoelectric cell t can again attack the grid gl

 <Desc / Clms Page number 29>

 
 EMI29.1
 do the hostage of priming 7. Simultaneously, the fallout 4. 1 '.. ture has the effect of reestablishing the circuit by connection 11, due to the fact that the paaoago of segment 48 one gaze of the sensor 6 restores the advance of the perforated strip opposite the cap-
 EMI29.2
 tor 6.

   Graoa when walking autosynohronlso'e do 2tenvmbi, o of the system, it is avoided that a back thyratron 51, 52 or 53 is 4samor "ce where part of the segment 48 is already pal. 60 beyond the oaptour 6, Thus, for example, the axial movement of the slide holder 21 can be derived from the rotational movement.
 EMI29.3
 tion of the rotary shaft 3 in such a way that an intermittent movement of the trotter 60, from contact 54 to contact 55 (or invar- *
 EMI29.4
 noment) takes place during one complete revolution of the rotating shaft 3.

   However, this movement may correspond to a
 EMI29.5
 fraction or a multiple of a revolution, provided that the sounding that one of oontaots 54, 55 or 56 no
 EMI29.6
 atrc actuated when the segment 48 passes one look at the sensor 6, is satisfied. It is of course understood that Ion contacts 54y 55 and 56, muntionnds, are representative of all the other contacts, present in all the other cathode connections of all the other thyratrons, each of which is affected, in combination with a photoelectric cell. separate from the sensor 28, to a back font arranged on the slide holder 21.

   It follows that the method described above makes it possible to select or change the font with great rapidity. This result is obtained fully automatically, in addition to
 EMI29.7
 torvontion of a combination of perforations per police, oam- bination provided on the perforated strip 1 which crosses the oap- turn 2.

   If we admit that the duration of a complete revolution
 EMI29.8
 of the autonynchrono system integral with the shaft 3 this do 40 "x sec. that the duration of the displacement of the slide holder 21, and

 <Desc / Clms Page number 30>

 
 EMI30.1
 dono of the wiper (10, from oontuot 54 to ocmtaot 55 at $ 61 in the amount of 40 "* 1 sec ot that, on the other hand, these fonts in total are juxtaposed in the axial senna, by annular sound, on the periphery of the slide holder, then the time required to change polio will be
 EMI30.2
 <2 sec maximum ut 44 '"' 800 minimum.

   As the signs * 1 * which determine the width of the different symbols of ohaq, a font, signals which, either in the form of a combination of specific perforations 17, or in a similar way, are immediately adjacent to the graphic symbol ot , consequently each corresponding slide, or even, are ddoalé8 of a same angle, o common to all the fonts, the axial displacement of the slide holder has for offet do to develop not only another font, but also the signals
 EMI30.3
 of width assigned to the symbols of this polios and taking the form of combinations of perforations or other points trnvoreablos by the light, of the slide holder.

   Alternatively, these signals can be formed, not
 EMI30.4
 by donation combinations of perforations 17 ot an oaptour 19, oOm- me indicated in the k'ig lut but by back areas transparent or traversable by light 72, 73 and 74, Fig 9, which are located for the porto-slides near the corresponding slides 16, areas which are offset in the axial direction,
 EMI30.5
 the arrangement being as it is, with respect to the fan 71, which turns integrally with the flash lamp 8 in the sound of the arrow, these zones have a common beginning - but we
 EMI30.6
 any case not a common end - with the dÓooupago corresponding to the slide to laquo elloe are affected.

   Taking into account the length of 001 sonos trentparontes - length which distorts the width of the symbol and which is proportional to glue -

 <Desc / Clms Page number 31>

 
 EMI31.1
 Ci -, a rotary sensor located near the tenotre 18, Fig 1, picks up in its photoelootric cell a light signal of a longer or shorter duration. A montage, no. ropré # feel, can use this light signal, which is converted to '. uno voltage by the photoelectric collector of the sensor, we see the charge of a capacitor, which in turn transmits its charge to a rudder device which produces or governs the progress of mirrors 23 and 24, the value of the charge
 EMI31.2
 constituting a measure of the width considered.

   The fungtrons 14 and 71, Fig 9, were deported in the interest of clarity, of their effective path, relative to the observer and one direction of the latter. In reality, the screen 71 should scan areas 72, 73 and 74, while the window 14 should scan slides 16, in the sound of the arrow.

   This
 EMI31.3
 is also valid for Fig. 6, which c '? rt to indicate the permissible time which may elapse by discharging the lamp & flash, without the wind moment extending, not only the slide determined by the combination of holes made in the perforated band 1, but also on parts of a slide which, in relation to the sound of the movement of the flash lampo and windows 14, 15 and 'II, is located in front of or behind the slide determined by combination of
 EMI31.4
 hole. In Fig 6, the fonutros 14 and 15 - which, for the sake of clarity, having a different shape in Fig 1 - are reopened here in the form of narrow cutouts, travorsablos by light, in a opaque background.



  These windows, which, for the sake of clarity, have been shifted in the drawings, can be seen in reality.
 EMI31.5
 16 in the direction of the tlooho. If we start from the same conditions as those admitted above, on page 10 of the pr6aan-

 <Desc / Clms Page number 32>

 -te description, maïa assuming a diameter of the slide holder-
 EMI32.1
 Eitivos of 300 mm instead of 200 mm and we admit that Ion different projootione follow one another at a speed of 40 / oecq the peripheral speed of the flash lamp and the fonfitros will be here about 58 Wooo.

   It follows that, to fulfill the condition, poeèo on pago 10 and stipulating a maximum displacement of 0.02 mm of the slide giving the duration of the deohargo of the flash should not exceed
 EMI32.2
 38,000 1,900,000 "A n. ### - n 1,900,000" '' 'sec 0.02 In a non-rotating poxto-diapooi, tivoa, with a diameter of 300 mm the periphery is about 950 mm. When soft tale slides are arranged on a segment of about 3000 of this periphery, each slide is assigned a length of 4.6 mm on the periphery of the slide holder, including an interval of 0.6 mm for example , which separates each slide from its neighbor.

   It follows that if each slide has an actual size of 4 mm, windows 14 and 15 which have been shown as a single window will appear.
 EMI32.3
 in total approximately 4 mm plus 2 distances "5.2 mm, traversing which the flash can present all its intensity, without having to fear an undesirable wind from the neighboring slides.

   If, in (1) or (2), we replace the par-
 EMI32.4
 eligible course of 0, 0? mm by 5.2 mm, we obtain respectively given durations d 6ola.xons are admissible do 25,120 30,000 ### 4,800 ** i nec and # # # ¯ * 7.300-1 eeo
5.2 5.2
These temples can Otro achieved without high cost. However, the significantly simplified design of the flash lamp mounting is not the only advantage. Another

 <Desc / Clms Page number 33>

 
 EMI33.1
 The essential point is that it is no longer necessary to disarm the use of a flash source with excessive light density since the offioaoo duration of the ola1remont has not been prolonged.

   On the other hand, less sensitive films can be used. In addition, the reproduction of the symbols * the film exhibited presents absolutely no motion blur.
 EMI33.2
 mount of the porto-dlapositivos laying the 601 atomont of the flash, given the content of the symbol of the aeolian slide, transported by the beam of rays of the flash larapo, have motionless, all oommc, ootto last, o'oot-to- say, in relation to cotto Dernibru ut to the exposed film, do aûrao than in relation to the rotating mirror 20 to 450 and to the deviation mirrors 23 ut 24, while, in the Example oitd above, the porto-slide
 EMI33.3
 The rotary ves imply a blur of 0.02 mm.

   It goes without saying that or approximate calculation comes only to determine the ratio ontro the orders of magnitude of the admitted exposure times! * '
 EMI33.4
 blues of gentle procedures of an opposite nature. homo on admitting other starting values, it will only result in an important modification of the favorable result obtained with a fixed porto-diapocitivos cooperating with a light source
 EMI33.5
 rotary,, v proo6dd according to the invention being improved in uno proportion corresponding to the factor of 250.



  2ocliiertion of 7.'6aha11 d o -!> Rodl1ctor;
We already have. indicated above than all the symbols governed by the combinations of hole in the perforated strip appearing
 EMI33.6
 are, in the same order as the Instructions which read 44- olonohont, like a reproduction of their image on the slide, in the mirror at 45 forming part of the auto-synchronized system, and rigidly fixed to the rotary shaft 3 .



  Thanks to the characteristic angular offset of the back images

 <Desc / Clms Page number 34>

 symbols have their axis oriented perpendicular to the plane of the drawing, an offset which depends on their angular position on the slide holder - as indicated in Fig. 2, where. there is shown a cutout extending over different neighboring soft fonts - these images are always present in the same position to the lens 22 which searches them, for example in a vertical position. According to the invention, the optical system 22 - which could moreover occupy a self-position on the projection axis - is a system of variable focal length.

   The commercially available modules pormott a mine at the point of the local distance to up to times the shortest focal length. Optical systems or auxiliary optical lenses with fixed focal length, which can be placed in one or more points of the axis of the projection. By properly focusing the focal length of the optics 22 (the adjusting device 30 is represented symbolically in FIG. 1), it is possible to project, on the film to be exposed, the image. G of the symbol in its original size, modified according to the scale.

   It follows that starting from a focusing substantially intermediate the focal length of the optic 22, setting for which the image of the symbol is projected onto the film in original size, we can reduce the image. scale on increasing the focal length and increasing the scale on reducing this distance, Fig. 3 represents the conditions which exist when the greatest set focal length f2 of the optical system 22 determines an enlargement of the image G of the symbol up to the size B1. When the focal length is reduced to its minimum value f1, the image G of the symbol is reproduced in size B2 on the film to be exposed.

   Fig. 3 further shows the

 <Desc / Clms Page number 35>

 position that the image G of the symbol must occupy with respect to the optical axis so that the reproductions of the symbols on the
 EMI35.1
 film, whether allos are enlarged, scaled down or at 1: 1 scale. can always have a common base line, that is, that los imagos dos symbolizes "hold the line". Oooi would not be the case if, oommo cola so general practice where the image TU of the symbol was arranged in the optical axo * Offot, in the event of a change of scale, the proportional modification of the size of the projected image. would manifest in the same mosuro on all sides around the optical axis.

   If we take as the starting point the imago of the symbol projected on original size, the base line of this image would be placed, a case of roproduotion on a reduced scale, higher than the initial baseline, while in case of enlarged scale reproduction, it would be placed lower than the baso line of the original image. This essential drawback is avoided when, as shown in Fig 3, the base line of the original image of the symbol is formed by a diameter of
 EMI35.2
 optics 22, perpendicular to the axis of projection do oollo- oi. The images of projected symbols, of different size, will pass a basic line constituted by the same diameter, but shifted to 180.

   In practice, only half of the available opening of the optic is used. the posi-
 EMI35.3
 blo dos rays through the other half, unused, do 1'op. tick, represented by dotted lines in fig. 3.
 EMI35.4
 



  Optical systems with variable focal length and with a built-in motor adjustment device were found on the market. FIG. 8 represents the optical ayetoau 22 oor * the shape of a circular disc provided with uns oamo 67. The rudder don movement $ of adjustment is ensured by means of 616mont analoguoo to

 <Desc / Clms Page number 36>

 those already described in the part of the description relating to the change of font.

   Thus, as prudently, ion thyra- trons, 61, 62 ot 63 and the switches 64, 65 and 66, interposed in their anode connections, as well as the photoelectric cells 68, 69 and 70, provided in the sensor. or turn 28, are representative of a greater number of these elements; an element of each species is provided that is required for each possible turn of the change in the scale of reproduction.

   Given the infinitely large number of intermediate positions between the smallest and the greatest focal length that can be obtained by adjustment, it is theoretically possible to operate in limited cases an infinitely large number of changes of scale. However, in practice, only a limited number, for example sixteen, of these possibilities will be used. This means that, in the sensor 28, there exists for each of the ocra sixteen positions a photoelectric cell, to which this assigned a thyratron and a contact arranged in the anode connection of this thyratron.



  A possibility of modifying the sound of rotation of the M3 commando system which actuates the optic 22 is established in the manner of glue which has already been described in connection with the adjustment of the slide holder, or in view of the selection of the font.



  This possibility will therefore not be described and represented here a liver do more. However, and unlike the control of the movement of the slide holder, this is a rotational movement of the cam 67, a rotation which corresponds to the longitudinal movement of the friction 60.

   Thus, for example, when the optical system 22, and therefore also the cam 67, has a starting position in which the contact 64 is open, and, on the other hand, the oaptour 2 receives the tape.

 <Desc / Clms Page number 37>

 
 EMI37.1
 perforated 1 a signal - under the photo of a combination of 1> 0r - determinate holes 60 - as is, after comparison in 100 hostages comparator * K1 ... K9, it determines the discharge of the flash lamp 8 at the moment where this lampo this coming to occupy the exact angular position in laquo its light illuminates the
 EMI37.2
 photok'ioatxiqua cell 69 of oaptour 28, l t1t2pulsien p08i ti ....

   vo do this cell will have the effect of priming the thyratron.



  The motrioo M3 source, which can be an engine or a clutch
 EMI37.3
 61ootromagnútiquo, have aico oourant, do a8m that the bobi "no of the shine 46 whose attractiveness d6toarmino just like that of the rolais 45, the ooupuro of connections 10 and 11, in order to avoid an advance of the perforated strip ot a transmit-
 EMI37.4
 sien of a do d <3olon.oheN.on.t.

   The M3 control system obtains the optics 22 until the cam 67 of this optic reaches the oontaot 65 ot opru oolui-oi, from? so that the discharge of thyratron 62 is 1ntGrrompuo and that the force of motive force M3 is immobilized for this position being glued that must occupy the optics, o'ost-à-diro, the .antl2ids adjustments of collo- cl, to determine the desired fooalo longliuur and, consequently, to impose on the ray path the factor
 EMI37.5
 increase or decrease determined by the size of the holes in the perforated band ?.
 EMI37.6
 



  While ensuring lo xkglago do the focal length of the lens 22, the M3 commando system actuates a rotary switch 33 coupled to this do oonmando at system, the contacts of which determine the on and off of a few.
 EMI37.7
 - or of several - elootric capacitors which modify the intensity of the úolair of the flash lamp has, in accordance with all known methods, in such a way that the enlargement of the reduction of the production of the image of the symbol by

 <Desc / Clms Page number 38>

 
 EMI38.1
 compared to the original dohollo do roproduotion $ eAO00MYa &% O of a flash of greater intensity, while a flash of less intensity corresponds to the reduction of this scale.



  We thus obtain that the amount of light that the image of the symbol projected on the film to be exposed always remains constant, related to the unit of excess cola independent of the more or less large surface area of the dolairean surface. Flash intensity adjustment mode offers an advantage
 EMI38.2
 stage on oe that he d.cpunna to provide a special adjustable diaphragm a? a shutter with adjustable opening time, for adjusting the oxpoaition time.

   Co-mode of adjusting the blackness of the film to be oxidized, making use of the regulation of the luminous intensity, contributed noticeably to simplify the construction and to reduce the cost of the system, thus increasing the vitosso do function of the system. compared to other systems known to date *
A motor source M3 is coupled with a device
 EMI38.3
 tif which gives rise to 1% lO a modifio of the avonoon pitch are initial symbols ot lines, proportional to the
 EMI38.4
 modification do 1. 6ahv7.la do reproduction.



  The) ?! ls ... d t aVMOOt1ent back B: '1nl
Bloo 31 of fig. 1 symbolizes the control of moving mirrors 23 and 24, the first of which is a dihedral or V-shaped mirror intended to produce a double reflection of the beam of rays.



  It has soft parts each forming an angle of 45 with the optical axo. After passing through the optics at focal distance
 EMI38.5
 the adjustable, the fa1000au of rays, modulated by the content of the symbol, strikes glue on the surfaces of the dihedral mirror 23 which is close to the idle roller 26 and which reflects the beam towards the other surface, so that the latter is seen impose

 <Desc / Clms Page number 39>

 by the dihedral mirror 23 an inversion of 1800 in total, in a m8mo plane.

   The mirror 24, also tilted at 45, finally deflects the beam of the ray towards the spinning drum 25, which carries the film to be illuminated, so that the reproduction of each of the symbol images projected from the dia- positive sc forms on the photosensitive layer of the film. The device which carries the mirror 23 and which is mounted to move parallel with respect to the optical axis, is connected, on the one hand, by a flexible cord, a chain or the like, to the device carrying the mirror 24. ot also movable parallel with respect to the optical axis, ot, on the other hand, by means of an idle roller 26 integral with the first device, at a fixed point.

   The idler roller shaft 26 is connected by means of a tension spring 27 to a fixed point, so that the bead or other connecting element is always in tension: When the mirror 24 is moved backwards signals from sensor 19 - triggers following the illumination of one of the combinations of perforations 17 or combinations of perforations provided for in segment 50, through block 31 indicated in fig.

   1, where there is shown the connection with the sensor 19 or with a sensor intended to analyze the signals formed by the points 72, 73 and 74, traversable by the light, as well as the melting 71 - , the mirror 23 so moves one step in the same direction as the mirror 24, to each back moves- mounts of this last mirror, due to its coupling with the roller or idler 26, the displacement of the mirror 23 being equal at 0.5 times the stroke of mirror 24. We thus obtain that the length of the optical axis, measured between the illuminated slide and the illuminated film, always remains constant, whatever the position of the mirror 24.

   Interpretation of signals

 <Desc / Clms Page number 40>

 
 EMI40.1
 1 -. 1 --- - - - ", ----- ¯ ...., ..- - 4 --- symbol steps ** signals which are formed in block 31 according to the gentle manners described below above, namely, either by the combination of perforations 17, colt by the orifices 72, 73 and 74 -, as well as the required control of the driving source M2, seen from the intermittent advancement of the mirror 24, can be effected in any way known, but not the object of the present invention. This also applies to back training.
 EMI40.2
 q8 do, l by block 32 with the help of signals which, as indicated to several rcpriaca, govern, in any way whatsoever, by means of a 601air of the Icmpo with flash 8,

   through the mediation of photar3lactx cells., uav of sensor 28, which correspond to the pitches of lines or interlining * oonaiddr6op lo mdoaniemo de commando Ml, which pout etro Drives a special motor, or a clutch ôlaatxatognGti, ua, dostin6 to be printed on the drum 4 film 25 back angular displacements corresponding to the pitch due
 EMI40.3
 lignas. When we go to a Goholle other than the largest dohello pa tite which can be obtained by adjusting the fooalo distance of the optic 22, the motor source M3 of the optic
 EMI40.4
 22 is developing a multi hostage? ioata'jr, which modifies the initial step, both lines and symbols, proportional to the adjusted expansion factor.

   The principle of such a multiplier is represented, by way of example of
 EMI40.5
 lisation, in figs 10 ut 11. The assembly shown in fig 10 functions as a well
A generator 79 - which could be a rotating perfora disc oombind with a luminous source and a photocell-
 EMI40.6
 electric - supplies contlnufcll adorn de6 <imvlaion8 to the deloo- trodo do order of a cold cathode counter tube, which

 <Desc / Clms Page number 41>

 can be of a decimal or duodecimal nature ot which can alternatively be replaced by a string of individual cold cathodo tubes.

   A contact 78 of a relay 77, which can be a mechanical or electronic relay, lets pass - after a single impulse has determined a single short closing of the relay - a numerous number, always identical. pulses supplied by generator 79, which must have a frequency suitably greater than the recurrence frequency due to the pulses which actuate relay 77.

   One had? - 'will pose quo ohaquu brief closing of contact 78, causing by a single impulse, giving rise, by oxomplo, to the transmission of ten impulses to the commando electrode of the counter tube to cold oathodo 80. 13. The number of pulses which pass must therefore be equal to that of the cathodes of the tuba oomptour 80. It will be assumed that, in the present example, oe tubo has ten cathodes, associated with a common anode.



  When the trotter 95, forming part of the rotary switch 81 and actuated by the motor source M3 of the optics 22, occupied a tollo position only where the cathodes are not connected to the potential of the mass, the appearance of the ten pulses to the mass. The counter tube control electrode 80 will not cause any of the luminescent intervals of that tube to be ignited. It follows that no impulse capable of producing a symbolo or do ljgno step will appear at output 82.

   However, when the wiper 95, moved by the motor source M3, occupies a position such that the first cathode 83 of the counter tuba 80 is read back to the potential of the mass, the glow discharge interval affects this cathode 83 s' start, but for a short moment only, since the inductor coil 94 tends to maintain a flux of

 <Desc / Clms Page number 42>

 
 EMI42.1
 current through the capacitor 9 '.

   The positive voltage of the common ltcnO- do sora for a brief moment Lower than the operating voltage of the interval of the luninoooonco, of the card that the
 EMI42.2
 discharge luainoNconto ontro the oathodo 83 ot the anodo sa dderunox this, after having generated a pulse at point 02. It follows that, when the switch 81 occupies this position, the multiplier stage operates in a report 1: 1, o'ost-
 EMI42.3
 à-diro, each impulse applied (to relay 77) results in only one impulse ne mani: roato at the exit of the multiplioatour stage (o'ost-à-diro at point 82).

   On the other hand, when
 EMI42.4
 that the motive source iï3 of the uptic 22 has moved the friction 95 of the rotary oOmt1utatQur 81 in such a way that it rolls the cathodes 83, 84, 85 and 86 to the ground potential, the pulses, ten in total - applied, following the
 EMI42.5
 brief fernoturo of oontact 78, to 1 dloatxodv do order of tubo oonptour 80 - determine auooosslvonont priming dos intervals do di5ohargQ 3.ur.noacnto 83, 84, 85 ot 86, ot it will be produced in the rdsistanoo do intoroaldo load in the connection of anodo, four voltage drops in total, lcequol the npparllisl3Qnt nu point 82 IF tUf the forma of four pulses * The ddahargo luainoscontu of the interval of the discharge assigned to the oathodo 86 no ma1rtt1IJnt laying down a duration of dtur- minou by the capacity 93,

   while the six pulses rae- tr.nt08 of the gonoratour 79, which prxnaont by lao oontaot 78, cannot ontror on, jou, part'te que los oathodos following 87, etc., are eÓpt1rÓuf3 of the aasso potential. The inductance 94 again determines the de-energization of the luminoacotal ddohargo at the oathodo 86. The system is ready to be actuated by the relay 77. We therefore had, in the last example, a multiplication by the factor 4 . It is

 <Desc / Clms Page number 43>

 The result is that, when ten luminescent intervals are provided in total, there is a possibility of multiplication up to the factor 10. Thus, each of the trains of pulses actuating relay 77 can be multiplied by the same factor, in proportion to the factor. magnification adjusted for opti- quo 22.

   The single effect is obtained with a multiplier stage as shown in fig 11. Here, the load resistance of the glow discharge intervals is subdivided, for example, into ten individual resistors, interposed in the cathode connections A brief closing of the mechanical contact or eloctroniquo 78 determines a passage of ten pulses from the generator 79 to the control electrode of the counter tube 80.



  In this tube, the discharge jumps from one cathode to the next and causes a positive voltage pulse to appear at the load resistance considered, to stop, at the end of this path, at the first cathode, until the next closing of the oontaot 78. It is clear from the above that a single and brief closing of the contact 78 provides up to ten pulses, which can be taken from the load resistors through the capacitors.

   The rotary switch 81, coupled to the motor source M3 of the optics 22, connects by its friction 95 as many cathode outputs, each through a capacitor, to the output point 96, as it is necessary to bring to the point lo the desired multiplication factor, which corresponds to the modification of the adjusted magnitude scale of the projected symbol images, from the original scale.

   If necessary, the contact 78 can be inserted into the cathode connection of the first cathode 83 of the counter tube, in which case an interrupted succession of pulses must present itself.

 <Desc / Clms Page number 44>

 the control electrode.

   As long as the contact 78, provided in the connection of the cathode 83, is open, the glow discharge stops at the last cathode 92 because, in the interior of the counter tube, the last oathode this neighbor of the first cathode, When contact 78 is formed, if only for an extremely brief moment, the glow discharge can jump from cathode 92 to cathode 83, from which it will jump - let contact 78 still be dull or already reopened - on each of the following cathodes,

     at each of which it will generate a pulse in the corresponding load resistor to finally stop at cathode 92. This switching offers an advantage in that the contact closure time is not critical.



  This time must not, however, exceed the duration of a train of nine pulses of generator 79. The sampling of the pulses which appear at the load resistors, as well as the adjustment of the desired number of pulses seen from the obtaining the required multiplication factor are carried out as described above, by adjustment and by means of the switch 81.

   Such an arrangement of a multiplier stage offers essential advantages over all the types of multiplier stages known to date, already because of the simple change, oxompto of complications and for being expensive.

   If we consider that, in the example cited last, the contact 78 can be a semiconductor phetoelectric cell where a brief element, the duration of which is not critical, suffices, as we We know that we can combine the appropriate position of the rotary switch 81 with the tripping of the multiplier stage - we have observed that the simplicity of this contact could hardly be

 <Desc / Clms Page number 45>

 surpassed.
 EMI45.1
 



  Los impulaiona dÓolonohúo8. the rest of the passage do. hole of the sogmunt 48, in the appropriate photocell of the sensor 6 can be used, in any known way, for advancing the perforated strip by one step on each rotation of the memory 4.

   This use for con- aistor, for example, we find that a certain number of holes if-
 EMI45.2
 tu <3s in a large common corolo of memory 4 dúolonohont, by 1untxc.aa of a photo6loctriquo oollulo, in oocbina1.on with the source luninúuao 5 oomraunü to all your cell # po- to61Qotriquua pr6vuau in the oaptour 6s five impulse * which, after aoplifioation dvontuollet will serve to command by electro-magnetic means an organ tolerated by an oliquot detentrainomoutt or else, the ongendr6oe impulses pou go aotionnor, by entroniso of an electromagnetic intorruptour, an electromagnetic clutch px6 seen and entro la oooaando do la bando perfor, e.

   On the other hand, if we only have a hole at the start of segnunt 48 ot a hole at the end of do oolui-oi - we will then read the sounds of the passage of this egmont through oaptour 6 .. , we can produce sweet soul
 EMI45.3
 impulses in total, the first of which comes out at the ltaoor9ago of a thyratron ot the dornièro to the ddsanarçago de oolui-oi, thyra- tron which, in turn, connects an electromngnetic clutch to a current source, for example,
The device of photocomposition ddorit in the present
 EMI45.4
 oxumple of realization allows to exeoutor of the photographic opoeit1on without prejudicial blur, cola at uno viteaee do projection not onooro r6a.liaúo to oo day, this example of oxd- aution not constituting however only one forno pr.urtiou.3bzaoü ' favorable to the invention, which,

   while remaining in the frame

 <Desc / Clms Page number 46>

 
 EMI46.1
 of outtu durnîèrup is 8uSQijptLblQ of diveroue variant ** Each liver that Itomploi do thyratrons oat suggests in this oxonplo do realization, we can use do pref6ronoo dos formon of Itoupèce aonnu under the designation, "type PL21" p whose advantages residing one particular one a falblo on- oonbroncntw a reduced price, ot, especially a large longd- vit <3 and a robust constitution.



  Whenever there is this question of photo6lootric cellulos, it will be done appol do prdfdronoo to a ninio- uxiG typos back co4inue, by oxonplo TP50, or else, we will use don phototro1storo or other soni-conduotoure photo6lootriquoso The following device l 'invuntion oomporta therefore prinoi- palonunt sweet o8pècus of organs 61cotronïquoe $ each cons- titudo by a single type, oo which oat particoulièroraont favora- blo on or which conoorno the Óqu1pmont in pïboos do ruohango.


    

Claims (1)

EMI47.1 R1'V END l CATIONS 1) Device for the execution of a photographic composition on photosensitive support films, with interpretation of the injected orders, seen from the control surface. EMI47.2 the lightning is by transparency of symbols of unequal width arranged on a fixed support, which is cylindrical * a direction of the axis of the porto-symbols, with a mirror at 45 rotated in this axis and serving for the deviation, in lo sounds axial, of the light arriving in lo sounds ra- EMI47.3 dial, with a do oor-tuando system for, modify the do uos synboloe font, an optical system for the transmission of the content of ot symbols for 10 ohangomont of the do oolui-oi scale, wn device for modifying lao pas doe symbols ot 10 pas dos lines on oonforuitd with this change dt 6akv, .a, as well as a device to adjust the degree of blackening EMI47.4 of the photosensitive support polllculo, characterized by the fact that the interpretation of all the orders, injected principally with the aid of perforated bands, is carried out by the comparison of these binary signals inj (, ot6e, with due dlo- triquas values generated by this luï-ratme device using a rotating perforated drum (memory 4) in oonbinaiaon with a EMI47.5 fixed luriincuno source (5) ot an oaptuur (6) with an appropriate number of photo61ootriquJQ elements, ôguivtxlontos values at all possible oodo signals, rudder holes being provided which detoru1nont the deolonohomont of a luminous flash at the instant when the comparator stages observe a coincidence EMI47.6 entro los compardos electric values, namely, the injootéos and oollos values produced by the device itself-aftmoj in oe a flash lamp, which produces the flash, turns on par- manonoo and, at the end of the emission do the wind, occupied by <Desc / Clms Page number 48> EMI48.1 relative to the porto-diapoeitivu8 an angular position roquiao either for the windshield by transparency of the slide assigned to the triggering signal-code, or for the windeaunt of one of the governing elements, these latter elements - which can be photodiodes, back phototransistors or other EMI48.2 photodiootriquos organs - occupying one outside, or one inside of the lateral layer of the slide holder (21) or on glue, the angular locations where the slides are not located, these control elements being essentially fixed with respect to the rotating flash lamp, each element EMI48.3 of control being assigned to a ddtoralin eignal-oodo, the injection of which in the detorraino device lr001a1roont to the corresponding Ó16mount of control and therefore the ddolenohoaont of the colui-oi function. EMI48.4 2) Device according to claim in oarotéri86 in oe quo the slides are arranged on lo porto-diaposi- EMI48.5 tives (21), essentially cylindrical, with an angular deonlago around the radius passing through their center (fig 2), the value of which depends on their location in the respective angular zones extending between 0 and 360. EMI48.6 3) Device according to claim in ooraotdriad in that the comparison do signals-oodo introduced is es- EMI48.7 aontiellonont with all los signals-oodo possible arranged on an a4a, xv (4) rotating we synchronized with the flash laupo (8), the arrangement being such that each signal-code EMI48.8 61Ómontaire injootd governs, ojointenont with a signal- code 6l6contaire of the memory (4), through the mediation of soft phatod cells, a4trig, uos in total, a mount at Whoatstone bridge, of such naniero (fig 5) that, we case of identity of the two signals, there is no evidence of any tension at the <Desc / Clms Page number 49> bridge output, or low voltage only, while in case of non-identity there manifests a high tension which however always presents the same polarity - endow- EMI49.1 mined by soft sources of alilaentation current -, whatever the) sound, positive or negative in where the bridge sa d6., - qu., bxa, on what quo los ponte governed by all 81naux law- code Ó1ÓQontniroe are connected on parallel and taking a zero or very n1nine voltage at the output when all the bridges are on equilibrium, but a voltage released as long as 1pa that one or more of the bridges * are not balanced 4) Device according to the rovondicationo 1 and 3t oarao- t6rio6 is that a ddolonchomnt pulse # generated more pnrticullèronent by 10 device, triggers the initiation of a rotating flash lanpo when, as a result of the comparison of the compared code signals, a zero or very EMI49.2 reduced so nanifeote at the output of the bridges connected in parallel. EMI49.3 5) Device according to los claims 1, 3 and 4, where the organos do governs each of them by a flash of the rotary flash Impe 4 (a), 00. orgnnco occupying in dodana of the lateral layer of the slide holder (21), or on it, angular positions where there are no slides, the control members being able to be fixed with respect to the rotating flash lamp or be united with oollo-oi, each organ of EMI49.4 governor being assigned to a detorn1n6 signal-oodo, of which the input in the dotomino device lt601a1rQent of the corre- sponding governor organ and therefore Io de-activation of the oolui-oi function. <Desc / Clms Page number 50> EMI50.1 6) Device according to claims 1 to 5, onraot'- ized by the interposition, in the optical axo connecting the flash lamp to the film drum, an optical system with variable focal length for the modification of the scale reproduction of symbols. 7) Device followed read claims 1 and 6, characterized by the coupling, avoo 10 adjustment system (30) of the focal length, or with another system to change it from the roproduotion scale, to an electric oapaoitd varia- blo (33) which, we function of each distance fooalo focusing or of another disposition aiming to modify the eohollo EMI50.2 do raproduot1on, nodifio the intonsity of the dolair of the 11p $ to flash (8), so that we disengage back oohollos from unequal reproduction back aymbolce # detormîndoe by modifying fooalos distances or by d 'other noeuros, the don- EMI50.3 luminous effective sity acting on the photosensitive support remains constant. 8) Device according to claims 1 ot 6, oarao- EMI50.4 tdrisu on that 16 optical ayotem with variable focal length is agono6, so that a constant diameter of its aperture leaves the base line oomuno to all the 9 symbols projected regardless of the focal length adopted from this optical (fig 3). 9) Device according to claim 1 and the following claims, oaraoturisd in that, to maintain EMI50.5 constant the length of the optical axis, we provide a 81.trJO do niroirs (23P 24) nobilos parallel to this axis, a part do 00 systêmo being connected to the other part do oolui-oi by application of the 6oan principle: i.quo of the idler ", 10) Device according to claims 1, 6 and <Desc / Clms Page number 51> following, characterize that, to modify the pitch of EMI51.1 sycibolae ot dos lines proportional to the enlargement factor of the symbols which has been denied in point, we use a multiplier stage consisting essentially of a EMI51.2 series of luninesoente ooanandos intorvalloe, bran- ohea on series, where a greater or lesser number of luminoecuntop intorvallor set a circuit based on the adjusted multiplication turn, a'amoroont and so d6s = oruent success- sively under the effect of pulses supplied by a separate generator, the output pulses of which can be collected EMI51.3 linked to acthodos, there is a nonbro corresponding to the magnitude of the multiplication factor, by the enteniso of a selector coupled with the device which determines the multiplication factor. 11) Device according to claims 1 and 10, ca- EMI51.4 raotaried on oo that it is planned dos governing bodies which determine the addition of a constant base unit, we the form of a prefixed injection applied to the multiple stages. EMI51.5 Plioatours we can see the constant enlargement or widening of the pitch of symbols and / or lines and / or spaces between symbols or entro moto. 12) Device according to claim 1 and reven. EMI51.6 following dioatione, caraotdrisé on what is planned, in the axo optiquo flash-film lamp, between this lanpo and lo por- EMI51.7 te-c3.apos3, tivos, an i'on8i; ro narrow (14/15, fig 6) in relation to the height of the slides, which rotate in conjunction with the flash lamp and which, during the duration of the discharge of a flash, runs through a portion of the periphery of the door - slides, equal to or less than a slide width-. ve ot increased by two distances between neighboring slides <Desc / Clms Page number 52> t EMI52.1 .3j Device according to claims 1 and 5, providing rudder elements (28, 59t 68, 69, 70) which initiate and control the axial movement of the slide holder EMI52.2 of a Dnn1re analogous to that applied to the adjustment of the focal length of the optical system (22), of the multi-rotation stage and of the capacity for adjusting the intensity of the flash, characterized in that It is foreseen, by font or by degree of variation of the focal distance, a thyratron (fig 7, fig 8) whose cathode is connected or parallel with the corresponding thyratron cathodes, the arrangement being tollo that a thyratron started by a corresponding detachment element, more particularly a photocell, determines the ease of use of a mo- EMI52.3 trice (M3, M4) for the relocation of the slide holder or the Modification of the focal length, one seeso to obtain the font or the appropriate focal length, source notrioo that, EMI52.4 when one of the extrOnos positions of the slide holder oh of the focal length adjustment systrao is reached, changes its without rotation under the effect of the contactraotianincraent (5fi, 50), the arrangement is on the other hand as that, at the end of the a3ustollont, the thyratron is désanoroé - and therefore the acting source iDt1obiliaéo - by the action of a rub (60) or a cane (61), which opens a contact (54, 55 , 56, 64, EMI52.5 65, 66) arranged, for example # in the anode connection. 14) yat8raa rudder according to claim 13 or. Whether or not means are provided which render inoperative the perforated strip and the ignition of the flash lamp during the duration of the displacement of the slide holder and the adjustment of the optics. 15) Device according to claims 1, 4 ot the <Desc / Clms Page number 53> EMI53.1 euivnntoo, characterize what quo ar3.zal.or, or original fractions due grnnduurw, back largouri of tym- boloe and back spaces are narquéas our slide holder in the form of areas traversable by light (72, 73 $ 74), of proportional length, areas of which .éolarancnt by transparency ost ensured by 10 flash and whose recording is opÓ6 by an oaptour or player rotating jointly EMI53.2 with the flash lamp, we inside the side layer of the slide holder, the roçuos tensions - the duration of which corresponds EMI53.3 to the length of the areas travoreablee by the luliièro ot therefore to the widths of the back synbolos and back oepaooe - are used to load an oapaoltd whose size of the load comes out to the rudder back 616monté which ddtoxx.ncnt Ion not or widths on 10 lines to be exposed but is copondantly modified prbalab3e- EMI53.4 Of which by a multiplioatcur stage of a corresponding quantity EMI53.5 at the Agrcmdiaseaont tour which had been adjusted.