US1055749A - Photographic-printing machine. - Google Patents

Description

W.. G.. HUEBNBR. P-,HmjoGRAEHQ PMNTING momma. APPLICATION FILED \TAN.Z1.1911.

' Z5 Y* y Muff. V ,f

A W. o. HUBBNER. PHDTOGRAPHIG PRINTING MACHINE.

.APFLIUATION FILED 11111.21. 1911.

' Patented Mar. 11, 1913.

f1 Simms-SHEET 2.

W. G. HIBB'NBR.

PHOTUGRAPHIG PRINTING MACHINE. IAE'PLM'ATI'ON FILED 11111.21. 1911.

11553491, .Patented Mar. 11, 1913.

' 1 4 7 SHEETS-SHEET 3.v

j 7g2 I j!! f Wp c. HUEBNER'. PHOTOGRAPHIG PRINTING MACHINE.

APPLICATION FILED JAN.21. 1911.

Patented Mar.`141,19 13.

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VV. C. HUEBNBR. PHOTOGRAPHCl REIN-'PING MACHINE. APPLIUATION FILED 31111.21, 1911.

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y ucter whereby sterren ,srnfrs-nrnn 'renten WLLIAM C. HUEIBNER, F BUFFALO, NEW YORK, ASSXGNQR T0 HUEBNERBLEISTEIN PATENTS COMPANY, GF BUFFALO, NEVI YORK..

rHo'roennPHIo-enm'rme MACHINE.

To all whom @'15 may concern:

vNini, o. citizen of the United States, resid-- ing at Buffalo, in the count-y of Erie and State of vNew .-Y'ofrk, have invented o. new 'and useful Improvement inPhotogrnphic- Printing Machines, of which the following is a specicrfilion.

This invention relates'to improvements in machines of the sort disclosed in my copending application Serial No. 413,196, tiled January 29, 1908, for producing photogrnphioy@prints upon the sensitized sur-l i'ieces ofioylinders orrollers such, for 'instance, sfere used in the printing of Well paper and for other purposes.

f he object of the invention 1s to iinprove the construction .of inschinesof this chan ythey cani he-edj usted with greater rapidity andv siccurifc nd With-less labo-r tor producing prints ini v required position oi' nrrangeinentron sinsitized 4eylindricsl surfaces, so es and lessen the cost prodincing the prints.

Brieiiyl stetedfthe machine comprises in addition to `the rotatably adjnstshlecylinder having the 'sensitized surface,- nnd e chamber, cn'se'orcnrrier containing suitable illuniinating` Inezins'wzind providedfwith n transparent concave-face plate adapted to press n transparent printing ilin or sheet against the sensitized 4Cylindrical surface,

which nre parts of the apparatus disclosed in said application, an iniproved incohenisin for adjusting the illuminating cheniher or ense and the sensitized cylinder with reference to each other. hot-h lengthwise land circninferentinll Y, so that the printing film or sheet con he applied to that portion of the sensitized. surface upon which the print or prints is or are to he nitide. The adjust ing mechanism includes inicronietcr controlling or adjusting devices which ure adapted to he readily set ifor :i predeterniined adjustment ot' the sensitized cylinder and light ehnniher und operate to antoinaticnllv control. thozuljustinent of the ports with i great precision. thereby enabling the prints lo he inode on tho sensitized snrlnre in exactly the required posi- `tions. The machine is also provided with tllferehyfto expedite a4 pien vie-w,

specification if mee met esten-tec irse. ii, reis. implication led January 21,1911. lSeriell No. 603,943.

ed to been aga-inst the cylinder opposite to the illuminating chninher to hold the cylinder from springing under the pressure of the illuminating chamber.

ln .the accompanying drmvings,consist ing of seven sheets: Figure l is e. side elevetion, partly broken away, of e. nhotographic printing machine embodying the invention. Fig. 2 is s plan view thereof. Fig. 3 is a central' longitudinal sectional elevation thereof. F ig. e is Ae sectional plan thereof on line 4--l, Fig. 3, showing the pivoted freine for the sensitized cylinder swung to one side for removing the cylinder. Fig 5 is an end elevation, pei-tlv in section, of the machine. Fig". 6 is :Vrsgnientary sec* tional elevation of the pivoted carrier for the illuminating chaniher and its adjusting I nechanism'.. Fig. 7 is e fece view of the ed- Fig. 8` is e, transverse sectional 3. 9 is e fragmentary sectional elevation' of the adjusting mechanism for thepressure device. Fig. 1U is ein elevationpartly in section,`on ail-enlarged scale, of

the micrometer controller for the circumferential afdinsting mechanism. Fig. 11 is ing thereof. `Fig.. 12 is it longitudinal see'- tional elevation, on n still hirgerscale, ot the micrometer controller, end a diagram or' the electrical connectionsfor the clutch controlled thereby. Fig'. i3 is n-transverse sectional elevation, onen enlarged scale, of the other micrometer controlling device, on line 1313, Fig. 1.5. le is s sectional pien of the gearing thereof. Fig. 15 is an elevation, with the casing' pertilly broken nivziy, o the micrometer device.

Like reference characters refer to' like prts in the several figures.

A represents the cylinder or roller which is provided with the sensitized surface and which is jonrnaled to rotate in a ironie B `which in turn is pivoted to siving horizonhilly on n' stationary nioin frame C. The sensitized surface cnn he provided either di ieotlv on the irintinff cilinder or roller.

itself. or on n separate thin plete. sheet or lube which is fastened one cylinder or' roller. ln the const-:notion shown. the cylinder .t is provided will; ifnermls a a :it

lpisting Wheel and dial for the sensitized' oylindcrelevation of the ninchinein lineA 8-8, Fig.

partly in section, of the gearc i il mi die its ends 'sented in bearings in the opposite ends of the ltr-:Une B, which' is pivoted to the mein frame so that it can be swung to one sido, as shown in Fig. by n pivot o seated in the lieiid oi nn upright Standard (i t one end ol ilie milio frame ond en n- @lined lured. ?)"lifiving o pivotal beeiin r on the lower portion of tbe stnnderd'. The bearing pieve ZF at the free oiled time l5 ie hinged to :i sliding,r section li oi the side lil-ir rit-the frame so that it een he swung," aside, as shown by broken lines in Fig: to permit the ieder from the ,oivoted frame.

l) represente e shaft which is suitably journnled on fr standard o :it the end of the main freine :idjnifent to the free end of the piroted freine and is provided :it .its outer end with hond Wheel d for tiirir ing' the Cylinder. This eliaift adopted to slide endwise in its bem-ine' to engage :ind releeee the eylinder :ind adapted to interloeli therewith by any suitable ineens, lor ine,oe, bjr the reduced iiinerml of shaft entering n socket in the :ifl'noent ioni'iiel o the Wlinder, ns shown. lVhei'i the ssl 'lt is ed loolis the pivoied Cylinder supporting frame ll from lnoveiiient, und when the 'Sharif is disengaged from the cylinder the frame con be swung to ene side. ills shown, the shaft l) is jonrneld in :1 hollow shaft l .which 'in turn is jom'iinled in e bearing 17' on 'the standard c,

lfhe eircurnferentia-l adjust ment ot' the cylinder can be observed by reference te en index on e 'ring fl? secured to the hand Wheel eoperating with :i errado* ated d li da i red on the standard o of the moin frame E replies cese, and ,i prirent pi' ranged bei llinninnting chamber or l ind 8, the iexible treni;- olin or sheet which is er the transom-ent eonczwecl fece pluie ot the clizio'iber :1nd the Sensi tired "uriner ol i. rolled or eylmder. This eliaiiil'ier con eleetri-r: lamps or other suitable lfiiiniimling apparatus. :ind is: so .mounted et 1t rim be adjusted lengthwise endjilso eircomiiermztiollv of the cylinder 'for phasing the printing' film or sheet opor site the reqnireifl portion of ilse Cy oder, sind it cnn also be. movi-wil toward :mo from the lint-ier of lii'essin the lilin or sheet' closed against th med enr-fece :md removing it the. rhe transparent .ece plete of the @houiller of proper mental der clos-el;T and iiresshe flexible nrii'iijing film or sheet evenlyo meinst the se" -iized ,isriioe, The printing film r sheet extends tomes tie comme foce of the force plate sind, Secured :it its opposite ends to the -niber by clamping device ot' i.

lr'nd For edinstiiig h n aber esioioin-efl, iii "f cilindrica?. slifiie to lit the ovliiiend of the piv-.

removal of the syl! ig'ed with the evlinflor'it' the sb aft I so the carriage k mounted to move radially toward and from the cylinder on e. carriage F, and this carringe is mounted tomove lengthwise of the cylinder in a carrier frame G- which is piroted eoneentrically with the exis of the cylinder. The illuminating chamber. is guided radially by rods f thereon sliding in holes in the carriage F, and the cari-inge is guided lengthwise byV lugs g thereon :slidingjin guides g on the longitudinale bers of the carrier frame G. The latter has end pieces g2 g3, the former pivotally supported on the inner end of the hollow adjusting shaft D and the latter 'pivoted by a pin g4 on the frame' standard c.

H, Figs. 3, 4- and 8, represents the beeksupport or restr for supporting' the cylinder under the pressure of the illuminntinoP chamber. The back support is arrange under' the (.fylinder opposite the illuminating chamber and. is shown as being movable to Ward and from the `cylinder on guides l on carriage 71, which is movable on longitudinzil guides lig on the mein frame vso that the brick support can be adjusted lengthwise of the cylinder With the illuminating chem ber to thus keep it always opposite thereto.

The illuminating chamber is moved toward and from the cylinder by suitable means, such, for imstande, as a screw 'e'. se cured to' the chamber and Workng'in the internally threaded hub of a bevel Wheel i" which is journeled on the Carriage F and is driven by a bevel Wheel 2 on e shaft I journaled on the carrier frame G and provided with o hand Wheel i for turning it. 'The bevel Wheel 2 is journziled in a bearing on the carriage F end splined on that it moves lengthwise with the carriage to permit the radial movement of the illuminating chamber in any position thereof. The beck support Il is :ilse moved toward and from the cylinder by suitable means, such, for instance, as o screw la connected by bevel Wheels ,li si to u shaft K which is joiirneled in the lower portion oi. the mein frame and is provided with n hand wheel k3 for turning it. The bevel wheel la is journaled in :1. bearing on and, eplinod on the shaft ll: so es to move lengthwise with the Carriage,

The following" mechanism is shown for swinging the carrier frame G to adjust the illuminating chamber eironmerentinlly of the sensitized cylinder: A worm wheel l1, Figs. 3, 4 and (l, is secured, to theend piece g2 of the carrier frame G concentric with the exis of the frame and. meshes Willi e worm Z, vFigs. 4 :1nd 6, on an inclined shaft Z wliieli is jonrneled on the standard o :ind is connected by bevel gears Z2 to e horizontzil'sheft Z3 also jonrnoled on the standard e. This shaft is connected by e chain wheel Z4, Fig., ll, :ind chain Z to the loose or driven member of an electrical clutch lll,

'ot the Way to facilitate the mountiinT y the driving member ot' which is secured to a drive shaft vm which can be driven by any means, for instance, by a power belt running on a pulley m. The clutch' M canV be of any suitable"construction in which the driven member is adapted `to turn with the driving member and drive the circumferential adjusting mechanism when the clutch is energized bytheI passage of an electric current through it, and to stop and arrest further movement of the adjusting mecha.-

nism when the clutch-operating current is' interrupted. Thefcarrier iframe G can be swung to a' osition in which the tace plat-e of the illuminating chamber stands approximately verticahas, shown by dotted lines in Fig. 8, and the cylinder support swung out en Cen.'

l V.tering and registering elf therunsparent gt-aneously by cross shaft n which is journaled on the"-carr1er rameG and is con nected by' bevel, vgears u2 to leich screw. One ot" thewscre'ivs( N', is provided at one end. With a chain"wheel connected by Aa chain n* and chain Wheel n, Figs. l and 5, to a shaft ne which is joi'unaled on the carrier frame and is connected by a chain Wheel n? and chain 'its to a chain Wheel n".

vThis Wlfieelfn,9 is jo-urnaled on the standard c concentrically with the pivot-al axis ot'l the carrier frame and is connected by a chain nl with the loose or dri'venn'iember of a second electrical clutch O, the driving,v

member of which is secured to the drive shaft m. This clutch operates similarly to the clutch M, through the described mechanism, to adjust the illuminating chamber on the carrier iframe lengthwise ot the cylinder.

rlhebaclt support His adjusted lengt-hwise kof the cylinder by a screw l). Figs. @l and 8, which is journaled on the lower portion of the main trame andl Worksl in a -threaded hole or nut'p in the calrlragfei-Zt.

This screw is co nected by bevel gear-sup to the lower en of a shaft p2 which is journaled on the main :trame and. is pro vided at its upper end with a bevel gear p" meshing with a bevel `gear p4 on the hollow shaft D. The bevel. gear 714, which, is con cent-ric with the axis of the carrier frame. meshes* with a bevel gear yf on uV shaft 79 which is j ournaled on. the carrier trame and is connected bevel-gears 79T with the cross shaft n.' The illuminating chamber andv back support are thus adjusted simultaneously and correspondingly by the rotation of the 'driven member of the -clutclr l). Mechanism of different construction could be employed for thus simultaneously adjusting the illuniinutingv chamber and buck support.

Each of the clutch driven mechanisms for adjustiine` the illuminating chamber circumfcren-t-ially and lengthwise is set in motion bythe actuation ot a suitable. switch to close the clutch circuit, and a micron'ieter controller. which is set by hand in accordance with the desired adjustment of the illumi.

nut-ing chamber, operates autoinatically when the illuminating chamber reaches this predetermined adjustment, to establish electrical connections for opening the clutch circuit to stop the'adjusting mechanism.

rI"he micrometercontroller shown for the circumferential adjusting mechanism is conresentsthe controller casing', which hus a glass front plate. Q. Q2 Q3 Q* represent four Wheels in'the casing journaled concern trically one wit-hin the other on an axle'or arbor q. The rims of 'these wheels ure located just in rear ot` the trout. plate 'of the casing where they caribe readily seen. The Wheels Q Q2 are provided on the trout faces with indexes or pointers q and Q?, respectively, which cope1ute`with a stationary graduated' scale f/5` which surrounds the wheel Q? and maybe formed onor secured to gthetront. plate. The wheels Q3 Q4 e, are also provided with indexes or pointers rf g* which cooperate with a stationary. gradu- .ated scale o6' surrounding the Wheel Q".

The scale (15- has equal divisions represen-ting inches (or other units of measure) which the illuminating' chamber travels circumferentially, while the other scale, o, has divisions indicating smull fractions of the units represented by the first. scale ([5. For example, the scale g has two` hundred equal divisions cach representing one two-hundredthsof an inch'. The wheels' Q Q3 are geared to the circumferential 'adjusting mechanism so that the former or units wheel Q is turned a distance equal to one of the.

unit divisions of the-fscale (1 5 during a corresponding 'circumferential travel of the illuminating chamber, and the other or tractions Wheel Q3- is turned one complete rend luton for each movement of the unit-s wheel e one inch or unit space. .The gearing shown for this purpose (see Figs. ll and 12) consists of a gear rim. or Wheel Q7 secured to the hub of the tract-ions wheel und meshing with a pinion g8 on the hori- '/.o'ntalf shaft Z3, and gear rim or Wheel 79 secured to the hub of the units Wheel Q. und meshing with a worm vf/l onv a shaft y which is connected by bevel gears 712 to the horizontal shaft Z3. AThe other two Vlli wheels, Q12 and Q4, of the coniroller are' adapted to' be independently turned 0r sci, by hund through Suitablemcaiis,-i0r insiancc, by gear rims or Wheels Q13 and qu secured respectively to the hubs of the Wheels 'and Q* l:incl meshing with pinious Q15 and g1 on setting sha-ft q1? which iS -aclupted t be turned by hand. The pinions Q15 and Q1" arclco on the seting slmfb g, and tile shaft-is provided Willi a clutchmemocr gw adapted t0 be interlockcd with our, or the otheroftlie Wheels :for turning it and the companion ccnirrollcr Wheel by moving the Sliaft'endwise in its bearings.

c'lclto the ciiruller casing@ zuid bearng ,conducting ring f," which is sccm'ecl 'to arul'insulaed from the gear rim of the driven units whec Q3. A Contact '1?' secured to this ring 1 is adapted to engage a ccpcruting cont-aci r2 carried by a c021- Liucting ring R2 which is Secured to und insulated :from the gear rim of the adjustable units Wlieel O2. Tlii ring turns in cuiiiac with a Contact fr which is carried lo); and insulal'ccl from tliavlagca-r rim of the elrivcn frz-icizions wheel Q3 and adapted to engage a. cmitact'i' carried by 9. conducting ring R which is secured to und insulated from the adjustable fractions Wheel Q4. A Stationary Contact brush-or device R5 on che casing bears against this conducting ring R4. ln thc use of the controller ille adjustable units und fractions Wheels Q2 und Q4 are turned to place their indexes opposite members of the scales Q5 and y representing, in inches amil fractions thereof. a predetermined iicsircd adjuslmcu of the illun'iirizitM ing: clinmbcr. '.llic circumfcrciitin-l adjusting xuccluuiisiu is than sul, in opcraaion by ming the circuiif'o'f iis driving' Clutch M. cn flic illuiiiuuting @humilier has travclci'l iliisI liSl'uiic-o, ille con'zlcis i" uml 'r3 carricf-l by llic units u'url frncious whcelS Q. and Q, which :irc ilriifcu luy lli@ uiijusiug' mecl1- uuism. will 1v-c brought nlio cugugfuucui. u'iili luc cuiipcruliiig cfuitucls 'r2 :iud 1A curricfl by lic- :uljusiuliic uuils uufl Yfruci'imis wllccls Q2 :mtl Q4. tlius plu/eilig ilic Contact. brushes R uci-ul El in clcclricul conuccliou. These liximlicfs :irc cuuuocicil willi uu electrical llc- Vice for opening 'flic circuit nl flic clutch M.

which drives the ,circumfcrculiul adjusting mechanism so lliut lzlxc elcctrii'izil cunncciou of tlic bi'mlxcs. :is cxpluiucd. will slop the :iiljurliug u'wclumiSm :mil ille, illiuuiiiuiiiig 'liu riiibcr.

Any suiulvlc aucuns"controlled by llic cmirullcr Gnu lic wird fm' opening ilic clutch circuit. As :ilmu'n diugrmnmuiczilly in Fig. l2. the cliilcli ifi is ccunecicil :icruss :m 0pcraing circui s s. in which is iulcrpouc-ti `:1 Switch S2 nclupcil miic, moved by lumcl m ciose bhs circuit und start the clutch. This :ssi'itch isA conneced to the core :if u sclel. represciits a Contact brugii 0r device Sc.

4tmllcr 1s Gonfitrificlcd cnil opcrzicg: w

@ma Mmmm eration ci the ccnircllcr the s lciioi ii fliil be enargzcfl sind will move the swich :E to open til@ durch circ-uil; ami Siep The .,ucn driven meclianism.

T. 2, 5 micrometer cmirolcr il'cr 'liic crut drives the mechanism that afljus" 'minut' q chamber lcngi'liwsc.

trol the clutch in ille :same Way that the controller Q controls *die clucli ."ii, :imi is only necessary tc describe iLlic drive gcai 'erentlyirom flic (lri'vc gcziring of the cori-- broiler Q5. owing; tu the dicrcnt arrcugc ment of thc 'two controllers in the machine, The conlvrollcfl luis fum' ifliccls cor :pcnfwheels of' the couirrgailcr Q. uml lh are provided with gczir rim?. or Wicc t3 154, respcc'ivcly. The gif-:1r rim ff ci' 'fractions Wheel. is driven by a gem' wheel 155,

Figs. 14 und 0n l'lie adjusting screw N". and "the geur rim fr ui: ille uuis-i uliccl is driven at the required slcwcr spacci' by aA sind :ulziprci'l tu elccricullj. cmiiicct flic slzi'liiiuiary ciml'uc. brushes ll uml U5 im' slm-ting lli@ clutch C. rmirnllcil liv iliis cnulrullczx in ilu, .fiume manner :is tlm contacts of the c iniroller Q. w

'llic cmifrullcr T ccuitmls lilac uiccl'muism which adjusts liolli i-iic illuminutii'lg chumlicruufl ilic buck support H lcugl'liwisc wiili roiiorcucc lo t-lic sensitized c vlimler.

A spcciiic cnnstrucion of alle 'micrcmclcr ':uuli'nllcrs Q mul T for Shipping 'the mljusl-iug :uccliuuisms: has been uhm/e described tu cunlilv u cmupleie uridcrst-zimliug o' the controlling menus, but. the iuvcntici'i is not rcsiriclcfl lo tliix cmwli'ucion uml infinis of otlicr .:uustrucliuu :ulupi'cd to operaie in im uuulugous manncr to control the ucljusuucul' of llic :icljuslulilc vilcvices of lic uuu-hin@ coulil he employed.

The instruction of the iiiiriomfufir cur",-

the cthcr ailcl Couszcqueiily, when the brushes R and BP are connected my thc cpi Ecs ' fie I. "ce

ferentially of said cylinder,'nieans for` adjusting said chamber lengtlvise of said cyltrollers per seis not claimed in this application, as the same -forins the subject-matter f of another application yfiled April 7 1911,

Serial No. 619,560.

I claim as my invention:

1. The combination with a cylinder pro- "vided with la sensitized surface, and-"an` j l illuminating chamber movable toward the `cylinder to press a printing film or sheet `against thesensitized cylindrical surface, of

f. adjusting means for changing the position y of said chamber with reference to-"'s.`aid:fcyl inder, andfcontrolling-means faldapted to be setto determine :the adjustment of said s stoppingof said' adjusting'jmeans, sulzistang,l

chamber and which automati'vcally causeithe l "tiallyas seti'forth.

` 2. The combinationvvith a-cylinder-pro- "vided withv a sensitized surface, land -an :illuminating chamber lmovable toward the cylinder to press a printing film or sheet againstthe sensitized cylindrical surface, ol.

adjusting means for chan'gi l "of saidchamber circumferentially with referen/ce 'to said cylinder, and controlling means adapted to be set to determine 'the adjustment'ot' said chamber and Which anto-- "matically cause the stopping of said adjust- 1 ling means, substantially as set forth,

f 3.1Thelcombination- Witlra cylinderprovided` with a-- sensitized surface, and an illuminating chamber IrlOVllll3J 'toward the cylinderfto press Aa printing film or' sheet g of A said chamber lengthwise with reference to saidV cylinder, and controllingff`means against the sensitized cylindrical surface, of' adjusting means for changing the position adapted to be set to determine the adjust-4 1 ment of said chamber andvvhich automatically cause the stopping of said adjusting means, substantially as set forth.

4; The combination. with a cylinderpio 'vided with asensitized surface, and an 'illumnatingchamber movable toward'the "45 f against the sensitized cylindrical surface, of

cylinder to `pressa printingfilm or sheet means `for turning" said cylinder to different 'i j positions, adjusting means for changing the position of saidchamber with reference to `said cylinder, and controllingineans adapt- Y `n 'ed to be set to determine the adjustment of l.. .said .chamber and-Which automatically cause `the stopping ofiqsaid adjusting means, subvided .with 4a )sensitized surface,` and j j i lilluminating," chamber. movable toward the j cylinder to press a printing iilin or sheet i against the sensitized cylindrical surface, of'

Vmeans for adjusting said chamber' circum- V f v1 stai'itially` as seti forth.

5." The 'combination with a cylindervv proi i inder, controlling devices adaptedv to be set Aet' toIdct-ermine the circumferential and length# Wise adjustments 'of said chamber, and

"the position4 -lmeans controlled by said devices'for stopping said `circumferential and Vlengthwise adjust-ing means, substantially as set forth.

6. The'ccmbination; With a cylinder proh vided Withfa., sensitized surface, and an illuminatingchamber movable toward the cylinder to lpress a printingilm'or sheet- 'against'the sensitized, cylindrical surface, ot

power--driven adjusting means for changingv the position of said chamber with reference to Ysaid cylinder, and controlling means adapted to bejset toi'determine the"I adjustment of said-chamber and which. automatically. cause the stopping of said adjusting snee-ns, substantiallyas set forth.

1,7'. Thecombinatifml with a cylinder provided with a sensitized surface, and an illuminating chamber movable toward the cylinder Kto press. a printingA film or sheet against. the sensitized cylindrical surface, of

adjusting mea-ns `for changing the position- 'ot' saidv chamber with reference to said cylinder, an electric clutch `for driving saidl adjusting meansa controlling device which y is adapted to be set `to determine the adjustment of said chamber, land means controlled by said controlling device .for interrupting the clutch operatingcurrent, substantially as set forth.

8. The 'eombinaltion-With a cylinder proh` vided with 'a sensitizedfsurace, and an. illuminating chamber `'movable toward the cylinder to press a printing' 'lrn or sheet against the sensitized cylindricalvsurtacaot adjusting means for changing thel position ice of saidch'amber Withreerence to said cylj inder, and"l electrical controlling means for said adjusting .means including a .device having contacts which are adapted to be' set to determine the adjustment of said chamber, drivenr contacts and means which cause vthe latterto travel uearrespondingly with said adjustin means `and to cooperate with said adjusts le contacts, and means controlled by said\.controlling means which act to stop said adjusting means, substan tially as set fortlr `9. The combination with a cylinder pro-- inder, 'and controlling meansadapted to beset to determinetheladjustmentof said vchamber-.and back support'and which autoinatically cause the stoppingfof said adjustingmeans, substantially as set forth.

l0. he combination of afmain ltraine, a

4support which is. piveted on` said main frame,'a,cylinder provided. with a sensitized surface which is rotatablymountetd on said iso

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