US954291A

US954291A - Photographic-printing apparatus.

Info

Publication number: US954291A
Application number: US40830707A
Authority: US
Inventors: William C Huebner
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-12-27
Filing date: 1907-12-27
Publication date: 1910-04-05
Anticipated expiration: 1927-04-05

Description

W. C. HUEBNER. PHOTOGRAPHIC PRINTING VPARATUS. APPLICATION FILED 1120.27.1907,

Patentd Apr. 5, 1910.

7 BHEETB--SHEET 1A PHOTGRAPHU EBNT'LNG APP RATUS.

APPLIUATQN TILED DE()4 2T. 190?. Patented Apr. 5, 1910.

i SEBETS*SHBRT 2.

W. C. HUEBNBR.

PHTOGRAPHIG HUNTING APPARATUS4 APPLTIN FLED DEO 2T, 1907. 954,291 Patented Apr. 5, 1910.

7 SHBETSPSHEET B Uff@ /iZrmsses:

A W. C. HUEBNBR. PHGTOGRAPHIG PRINTING APPARATUS. APPLICATION 'LED DBG. 27,1907,

954,291 Patentef Apr. 5, 1910.

'7 SHEETS-SHEET 4 W, 13. HHEBNER.

PHOTOGRAPHM PRINTING APPARATUS,

1A f w "APPLwATloN MLRH DEC. 1v, muy

i s Jmuted Apr. 5, 1910.

'i SHEETSASHEET [L W. C. HUBBNER. PHOTOGRAPH@ PRINTING APPARATUS.

APPLIATON FILED DEU. 2?. 1907 Patented Apr. 5, 1910.

' SHEETS-SHEET 6 Messes I Q. 60%

W, C. HUEBNER. PHQTOGRAPHIG PRINTING APPARATUS,

APPLIUATION FILED DEGA 27190'?.

Patented Apr. 5, 1910.

7 SHEETS-'SHEET 7.

, I Be it known that I, WILLIAM a citizen *of the V- printed upon the same sheet, for instance, 1n

.WILLIAM c. nunnnnnf or large edition printing surfaces upon the'same ystone or 'plate Apermits the j mTEpsTApns PATENT OFFICE.

iLEIs'TEIn,

BUFFALO, NEW YORK, ASSIGNQR or oNEHALF To GEORGE oF uFIALo, NEW YORK.

i rHo'roGnAPHIcr-MNTING Arranarus.

Toull whom ith-my concern.' y

C.' HUnBNnn, United. States, residingV at Buffalo, in thecounty of Erie and State of New York, have `invented a new and useful aphic-Printing Ap- Improvement in PhOto ollow'ing 1s especifipa'ratus, 'of 4which the cation.

Thisinvention relates toan apparatus-.for

poducln photographic prints upon eensl-4 Atized. sur aces, for instance, plates or stones.

A plurality of printing surfaces formed uponthe same plate or stone is desirable in a variet;7 of cases. .For instance, when -a is'to be printed a plurality of those of metal fproduction lof a corresponding number o Vimpressions simultaneouslyY and corresponding y increases the out7 ut and shortens the time required for print- 1n the edition. Gr, when several 4multico ored pictures or representations are to he a newspaper, the employment of aA corre,- sponding number of printing surfaces on the same plate or stone produces 'in a slngle im- .on the sheet in t e saine color.. these and similar cases 1t is'however essential pression all of the victnres or representations to success that the printing surfaces on-the plates or stones 4or the different colors should be inexact printing surface;A4 can be produced upon sensitized surfaces in predetermined loca-"- tions, with great certainty and accuracy and in a veryexpeditious and inexpensive manner.

The apparatus comprises, briefly stated, a

- frame or other support for vholding the sen-si-` manner tizedplate or stonefa rrier, box or oase having a transparent aee' pinta to which the transparent printing. plate is applied, such plate carrier 'containing suitable' illuminatmg apparatus and being mounted in such that it can lose adiusted to apply the printing plate tothe desired portion of the sensitized surface upon which a hotographic print is to bemade, anda hac support or pressure device arranged to bearagamst the Specication of Letters Patent. 'Application 111ml December 27, 1907. Serial No. 408,307.

In' Vall of.

register, and 4 the object i of this inventionr is to producen photo-A graphic printingl ipparatus by which perfect Patented Apr. 5, i910.

horizontal section through the bottom holding bar in line Ll 4, Fig. 1. Fig. 5 is a vertical transverse section-in line 5 5, Fig. `3. Fig. 6 is a cross section, on an enlarged scale,.through the top holdingbar and connecting parts. Fig. 7 is 'a' .side elevation, on -an enlar ed scale, of one en d of the bottom holding lar. Fig. 8 is a vertical section in iline 8 8., Fig. 7. Fig. 9 is a longitudinal vertical section in line 9 9, Fig.' 3, viewed in the. direction of `the arrow. Fig. 10 is a fragmentary vertical section" of the upper portion of the plate carrier, on an enlarged scale. Fig. 11 is'afra mentary horizontal section through the bac su port, on an en larged scale. Fig. 12 isa `ongitudinal sec.

tional elevation showing a sensitized stone supportedfinV the apparatus. Fig. 13 is a vertical transverse section in line 13 13, Fig. 12. J

Like reference characters refer to like parts in the several ligures.

The stationary main frame A' of the apparatus maybe of any suitable construction andcorplrises, as shown, upright end frames i20 whi are connected at the top and bot tom by longitudinal hars' 21 22, respectively.

The sensitized plate or stone is supported in this stationary frame org-holderv in nny snitable nianner. In Figs. 1-'6 and 10, a metal plate B, usually of zinc or aluminum, is shown, su orted in 1this frame or holder, while in lgs.- 12 and 13 alstone'C is shown.

When a metallic plate is operated 'upon it is preferalalyf fastened lin the statlonary fram@ in "auch manner that it can [be stretched in order to obliterate as far as possible all bends, bulgesor irregnlaritiesof surface. Convenient devicesfor fastening grooved heads 56 57, respectively, which the plate in this manner are re esented in Figs. 1-8, where 23 re resents a ongitudinal to holding bar for e upper edge portion ofp the plate, secured to cross pieces 24 of the end frames 20by an lieces 25.i This hold-I ing bar is preferaby' an i upper ed e portion of the lp ate B 1s clamped against tie flat side of the bar' by a clan1p ing bar 26. The fatter is provided with screw bolts 27 which ass through horizontal slots 28 in a sliding ar 29 having inclined or wed e faces 30 which engage against the nuts ofg the bolts and tighten or release the clam ing bar 26 according to the dizction in w ich the sliding bar is moved."` A lever 31 pivoted to the holding bar 23 and connected with the sliding bar by a link 32 is provided at each end of the holding bar for shiftin the sliding wedgeba.

The ower edge ortion of the plate B is fastened to a simi ar holding bar 33by a clamping bar 34 having bolts 35 which ,pre engaged b a sliding bar 36 having inclined or wed e aces 37 and operated by levers 38 and lin 's 39. The bottom holding bar 33 is movable up and down in the stationary frammor holder and is pressed down for stretching the plate by any suitable mechan.

ism, for instance, by levers 40 which are pivotedV by bolts 41 to osts 42 on the end frames 20 and engage t e ends of the holding bar 33 by studs 43 entering slots 44 in the holding bar, Figs. 7 and 8. Thefbottom holding bar 33 is movably attached at its ends to the osts 42'by bolts 45 passing through uprig t slots 46 in the bar, y

` The upper edge rtion of the sensitized plate B is clampe to the top holdingbar 23 and the lower edge portion to the bottom,`

holdin `bar' 33. The latter is then depresse by means of the stretching lerersAO whereby the plate is stretchedy D represents agmovable carri e which is mounted between the longitudin members, rails or bars',21 and 22 of the stationary frame or holder so as to be capable of slidin lengthwise between these rails vof thev ho der. This carriage lma be composed, as shown, of two rectangu ar upright side frames 50 A51 and connecting horizontal top and bottom frames or plates 52 53. Each' of the upright frames 50 and 51 is arranged between corres onding upper and lower horizontal mein ers 21 22 of the stationary frame` andthe contiguous faces of these parts are provided with suitableguiding devices, for instance, the top bars 21 with tongues 54 which engage in oovesin the top members of the carriage Y and the bottom bars; l

22 with V-shaped grooves which receive corresponding shoes 55 on the bottom members of the carriage. Y The horizontal connectin'u frames-52 53 are provided at their ends with gle form and the gears 66, so t at. by operating the hand wheel 67 on the lower screw both screws are turned simultaneously andi. the carriage D is adjusted vlengthwise 'm the stationary frame. The stationary frame A and the carriage D are `provided with devinm of any `sxniitable constructiorifor indicating the position of the carriage in the stationary frame, for instance, as shown in Figs. 2, 5 and 9, a horizontal scale 68 on the stationary frame, a pointer 69 which is adjustably mounted on that scale and can be set to indicate the desired osition` of the carriage D, and a pointer F0 secured to, the.- latter; p

E represents the plate carrier, consisting of a'li ht chamber case or -box which contains ilectric illuminating devices of any 'suitable kind: is mounted in the upright frame 50 ofthe carriage. F represents the back support or pressure device which is arranged in the upright frame 5101i the carriage. The late carrier andthe back support are eac adjustable toward and from the sensitized plate or stone soas to pro- L duce a lose contact between the printing plate and the sensitized surface, and they be placed opposite anyportion of the sensii made. The adjustment of the carrier and the backV support parallel with the surface of the plate or storie is preferably effected simultaneously.

face'side with a 'al1-werent face plate .7 of heavy glass on which th\ transpare t priging plate 73 is arranged, and also prefera l= i the illuminatin devices and the face plate for diffusing tie light. 75 re rsents the back of the light box, prefera l of sheet metal and rovided with a hand lio by a cover 6 A The late carrier is provided on both sides y with oes 77 Whichslideupon horizontal guid; Z8 famed on brackets@ secured to an upright rectangular carrier frame G which is vertically adjustable in the upright side frame 5U of the carriage.Y The ides 77 "are arranged at right an les to tie lane of the side frame 50 so at the carrier is re also adjustable rparallel with the sur- Y, ace of the plate or stone so that they can tized surface upon which a print `is to be.

with a Aground glass plate 74 between t The carrier E provided on its inner ory lli le closed adjustable on by any the sensitized justment the carrier is provided on its outer side with a cross piece 81 and an adjusting screw 82 connected therewith and working' in a bridge piece 83 secured to the brackets 79, Figs. 2, 3 and 5.

The carrier fratrie Gr is adjusted verticallyY in the side frame 50 0f the Carriage D by upright `screws 84 whicliare journaled on the upright side pieees of the frame 50 and engage nuts 85 on the brackets 79. Both screws are turned simultaneously from a longitudinal shaft 86h51 bevel wheels 8T, 88 the latter secured to sleeves 89 which are jurnaled in bearings 90 on the lower portion of the side fratrie l0. The horizontal shaft is provided with a lon 'tudinal groove and the sleeves with keys lnr maintaining the driving engagement of the shaft with the screws throughout the range of longitudinal adjustment of the carriage D in the stationary frame or holder A. By turning the shaft 8G the carrier frame G and the carrier mounted ther'ein are raised or lowered in the side frame 50 of the carriage D. The latter and the carrier frame are provided with suitable devicesfor indicating the po sition of the carrier frame in the carriage, for instance, a vertical scale 91 on the carriape D, an adjustable pointer U2 on that sca and a pointer 93 secured'to the carrier frame, Figs. E2, `3 and 5. t

By adjusting the carriage D lengthwise in the stationary Inain frame or holder A, the carrier frame Gr and the carrier E are adjusted horizontally over the sensitized surface, and by adjusting the carrier-traino Gvertically in the carriage D the carrier is adjusted vertically over the sensitized surface. These two adjustments enable the carrier and its printinlgr plate to he placed opposite any portion of the sensitized surface upon which a print is to be produced. The desired adjustment of the carrier and printing plate isreadily and accurately etlccted by the aid of the described indicating de Vices. Afterthe desired position of the carrier has been secured, the latter is adjusted on the guides 78 of the carrier frame G by means of the screw 82 and the printing plate is pressed against` the sensitized surface.

The transparent printing plate 7? may be secured to the face plate TQ ci the carrier suitable means. preferably, as shown, by transverse 5. 9 and 10, which overlap the beveled ilpper and lower edges of the plate. These bars are adjustahly connected with two vertical screws 102 for tightening the bars against the plate.` The upper har is proton abl;v secured1 to sleeves 193 which can he raised or lowered on the upper,Yuntlircaded portions of the screws, and the lower nur to beveled bars 10() 101, Figs. Erl..

these guides toward and freni plate. For effecting this ad i iro l l l "angles to the plane lctli screws are turned simultaney by a horizont-.1l shaft 105 ii'hirh is a VLtred with the lower ends et the screws hy bevel wheels 16h. The, screws and their connecting shaft Vare journaled in brackets 16T 108 secured to a rectangular traine ll which is somewhat larger than the carrier and is alljustably secured thereto in sin-li manner that this frame can be given a partial rotation With referente to the carrier. therebjY giving the printing plate 73 '.1 par tial rotation on the face plate T2. This rotary or tilting?r adjustment of the printing plato is desirable for registering the register inarlts on the printing plate accurately with the corresponding niarlis on the face plate. The rotary connection of the printing plate frame with the ral-rior may be estalilished, as shown. by :irnis l1() 111 secured to the top and bottoni ot the carrier and carrying screws 1153 which engage in slots itil in the frame Il curved concentric with the axial line of the carrier. The upper portion yof the traine H may hrrl'novide'd Willi a` con-- centric gear segment 114 with whirh engages anadjnsting Worin 115 journalrd on the arni The upper and lower edge port ions of the tare plate 72 are preferably covered b v opaque curtains 11V.

The bach slipj'nirt or pressure device l? is indented in the side Tranne 5l ot the carriage i) in the same manner in which tho carrier is mounted in the companion traine 5U, so that the haelt support and the earrier are capable of similar adjustments.

represents the rectangular traine nl the haelt support whirli provided on both sides With shoes 1:21 by which it is `slidabli1 mounted on guides arranged at right of the traine l2() and formed on the. lirarlietsiil of the Carrier fraine l. The latter is vertically adjustable in the` sidedranie ."1 of the carriage l) and is adjusted'by vertical screws 124 which are journaled on the traine 51 and geared :it their lower ends by bevel Wheels 123 with a longitudinal shaft ltl in the saine manner in which the upright serons' Sd are geared vwill: the longitudinal shaft SV). The latter and the shaft 126 ariJ connected by a transverse shait` 12T and hei'rl wheels 12S so that bolli longitudinal vshafts are rotated sininlianc ously.l thereby siniultaneouslj,Y rotating the screws S4 which raise or lon-ir the carrier frame U of the (ral-rim' and the .se-ruwe lil YWhiili raiso'or lower the rarrier traine ci' the back support. As both carrier traina t and l are inountedin the arriain l). ti both partake of the lrnufitndiual adinstnii-in of the latter in the strlionary inain trarne. ily this rneans the carrier and the bart: snp. port. are adjusted simultaneously liotl; lon

sli-eres 104 in which the serons llt) ifi-i gitudinally and vertically and both lare placed by the same adjusting operation oppositc that portion of the sensitized plate or stone on Which the print is to be made, the plate carrier opposite the face or sensitized surface of the plate or stone and the back4 support opposite the rear side thereof.

The frame 1Q() of the back support is provided on its outer side with a cross piece 129 with ovhich connects a horizontal screw 130 which works in a bridge piece 131 secured to the brackets 123 of the carrier frame I. The frame 1Q() of the back support can be moved by this screw toward and from the back of the sensitized plate or stone and can be pressed forwardly or toward Ythe sensitized plate or stone in `order to press the back support against the same.

ln order to produce a very close or intimate contact of the sensitized surface with the printing plate over the entire surface of the latter, the back support is constructed in such manner that pressure can be applied at various places over the surface of the back support, as may be necessary to produce the desired Contact.

185 represents the main pressure plate which is arranged within the frame l so as to be movable toward and froln the back of the sensitized plate or stone. This plate preferably carries on its inner or face side an auxiliary pressure 'plate 136 which is of about. the same size as the printing plate and loosely attached to the main pressure plate 13.5 by pins 137,' or otherwise, so that it can be replaced by a 'larger or smaller plate when a change in the printing plate renders this desirable. The auxiliary plate 13G is provided with a facing 138 of felt or other yielding material to make close contact with the back of the plate or stone. The main pressure plate is tiexibly conl nected with the frame 120, for instance, by

bolts 140 fitted loosely into an upright bar l-l-l in the frame 120, so that the pressure plate can tilt to a certain extent with refer- -ence to the frame 120.

Y1.42 represents upright shafts arran ed Within the frame 120 and each provi cd with several cams or eccentrics 143 by which pressure in a forward direction can be exerted upon various portions of the main pressure plate. Each shaft is provided with a hand lever 144 for turning the shaft, thereby tightening or releasing the eccentrics thereon. The latter engage slightly yielding projections on the main pressure plate, each projection consisting preferably of a stiff rubber sleeve or spring 145 and a, headed bolt 146 arranged in the same and guided in a socket 147 in the plate. The eccentric shafts are preferably mounted in the frame 120 so as to be removable therefrom, a convenient construction for this purpose consisting of bars or blocks 148 in which the shafts are journaled and which are removably secured to the inner side of the frame.

In adjusting the apparatus for producing a print upon a sensitized plate or stone, the plate carrier E and the back support F are firstfadjusted as` described, to stand opposite that portion of the sensitized surface upon which the print is to be made. The carrier is then adjusted toward the sensitized surface by means of the screw 82 until the printing plate is pressed closel7 against the sensitized surface. The bac support is next adjusted against the back of the'plate or stone by means of the adjusting screw 1 30 until the auxiliary pressure plate bears closely against the plate or stone. The supplemental pressure appliances, consisting of the cams or eccentrics, are then resorted to as far as may be necessary, to apply additional pressure Where needed in order to roduce an intimate and uniform contact of) the sensitized surface with the printing plate.

If it is desired to provide the sensitized surface with a plurality of like printing surfaces, this is readily done by shifting the A plate, carrier from place to place over said surface. If it is desired to rovide several plates or stones with a similar number'of printing surfaces for printing several colors, the exact position of the carrier in cach place is noted by reference to the two scales. Then, upon removing the late or stone Which has been so exposed an applying the sensitized plate or stone for the next color to the holder,-the carrier can be again placed into each of the former positions by reference to the scales, and the prints for the second color can be made upon the second sensitized surface in exactly the same positions in Which they were made upon the first sensitized surfaceLso that they Will accurately register with those previously made ori the plate or stone for the first color. Each additional plate or stone is treated in the same Way and the resultingset of plates or stones contains on each plate or stone a plurality of printing surfaces for one color, with the corresponding surfaces 0n the several plates or stones in exactly the siamerelative position so that they will register correctly.

`If it is desired to provide the sensitized ,plate with a plurality of printing surfaces which differ from eachother, the operation is carried on in the saine Way but different printing plates are applied to the carrier for producing the different prints, as may be necessary. Although the prints on the same plate or stone are different in this case, the corresponding prints on the several stones or plates are alike and in correct register.

The sensitized plate may be provided with a number of negative prints by using one or more transparent positives on the carrier instead of one or more negatives. The nesetive plate so produced contains a plurality of prints and is used for producing positives and further negatives.; each containing a plurality of similar prints and all in correct register.

Convenient means for supporting a sensitized stone in the apparatus are represented in Figs. 12 and 13. In these figures the stone C rests upon a longitudinally movable carriage 150 which is mounted upon a longitudinal beam 151 supportedat its ends by yokes 152 resting on the longitudinal bottom bars 22 of the stationary main frame. The beam ijs adjustably supported in the yokes upon vertical screws 153 and provided with standards 154 carrying at their up )er ends horizontal screws 155 between which theA stone is clamped endvvise. The beam is rovided in its upper portion with a dovetai groove 156 in which the carriage 150 and the bases of the standards 154 are arranged.

It is obvious that the mechanical features of this apparatus may be modified in various Ways Without departing from the spirit of the invention.

I do not wish to claim anything in this application which is claimed in my pending applications Serial No. 358,251, iiled Feb. 19, 190i', and Serial Nol 416,643, tiled Feb. ie, ieee.

I claim as my invention:

1. The combination of a station-.try frame provided with a holder for a pript-i'eeeiving part having a sensitized surface a carrier for a photographie printing plate adapted to receive said plate on its face side and having means for illuminating said plate.y means for adjusting said carrier in said frame toward and from said sensitized surfaeo and pressing the printing plate against said surf-ane. and means for adjusting said carrier in said frame in a plane parallel with said sensitized surface when said printing plate has been Withdrawn therefrom, substantially set forth.

2. The combination of a stationary frame provided with a holder for a print-receiving part having a sensitized surface, a earrier for a photographic printing plate adapted to receive said plate on its face side and having means for illuminating said plat@ means for adjusting said carrier in said li-ame toward and fi'om said sensitized surf-.iw and pressing the printing plate against id surface, a haelt support for said print-receiving part, and means for pressing said support against the same, substantially as set forth.

3f. The combination with a stationary i l t frame provided with a holder for a sensitier-il part, guiding means on said stationary frame arranged parallel with the sensitized sui-fare. 'a carriage adjustable on Said guiding means, a carrier for a photographic printing-plate adapted to press said `plate against the sensitized surface and having means for illuminating said plate, said earrier being movable on said carriage at right angles to said guidin means and in a plane parallel thereto, ant means for ad'iiisting said carrier in said carriage toward and from the sensitized surface, substantially as set forth.

si. The. combination with a stationary frame provided with a holder for a sensitized part, guiding means arranged in planes at right angles to said sensitized surface, and a carrier for a photographie printing plate and a back support, both adjustable on said guiding means toward and from the sensitized part, siibstantially as set. forth.

5. The combination i with a stationary frame provided with a holder for a sensitized part, a carriage movable in said frame parallel with said surface, and a carrier for a photographie printing plate and a back support. both arranged in said carriage and adjustable therein toward and freni the part provided with the sensitized surface, substantially as set forth. i

6. The combination with a stationary frame provided with a holder for a sensitized part, of a carrier for a photographie printing plate and a back support arranged rispet-.timely opposite the front aildrear sides of the sensitized part and eat-.h adjustable in a plane parallel with the sensitized part and also toward and from the saine, substantiallyr as set forth.

T. The combination with a stationary frame provided with a holder for a sensitized part. of a` 'arriei` for a photographic printing plate and a back support arranged respectively opposite the front and rear sides of the sensitized part, and iiieans for adjusting said carrier and said back support simultaneously in planes parallel with said sui-faena substantially as set forth.

P. The Combination with a` stationary frame provided with a holder for a sensitized part, of a` carrier for a` photographie printing plate and a.y bai-liY support arranged respectively" opposite the front and rear sides ot' the sensitized part.y iin-:ins for adjusting said earriei' and said back support simultaneously in planes parallel with said surfaee.

i and means for adjusting said Carrier and haelt support iislependentlj,v toward and substantially as set forth.

having iiieans for holding a part provided with a sensitized surface, guiding means on said frame arrangi-rd parallel With said surface, a carriage adjustable on said guiding means, carrier frames arranged in said carria e on opposite sidesof said sensitized'part an adjustable in planes parallel therewith and at right angles to said guiding means,

and a carrier for a photographic printing plate and a back support, both arranged in said carrier frames and adjustable toward and from said sensitized part, substantially as set forth.

10. The combination of a stationary frame having clamping devices for holding a sensitized plate, one of said devices being movable away from the other for stretching the plate, an adjustable plate carrier, and an adjustable back support, Substantially as set forth.` i

l1. The combination of a stationary frame having bars for holding a sensitized plate, clamping bars adapted to press said plate :fgainst said bars, Wedde bars by which said clamping bars are tightened, an adjustable plate carrier, and an adjustable back support, substantially as set forth.

12. The combination of a stationary frame having a fixed bar for holding a sensitized pate and a holding bar which 1s movable to- YWard and from said fixed bar, clampin bars adapted to press said plate against sai bars, wedge bars by which said clzbinping bars are tightened, an adjustable plate carrier, and an adjustable back support, substantially as set forth. j

13. The combination of a stationary frame havin means for holding a sensitized part, t(iongitudinal guides on said frame, a carriage adjustable lengthwise on said guides an having upright guides on opposite sides of said sensitized part, carrier frames adjustable on said upright guides and having horizontal guides in planes at right angles to the lanes of said upright and longitudinal gui es, a carrier for a photographie printing plate and a back support, both adjustable on said horizontal guides toward and from said sensitized part, and means for pressing said plate and said back support against opposite sides of said sensitized part, substantially as set forth.

14. The combination of a carrier for a photographic printing plate having a transparent face plate on which the photographie plate is arranged, a frame having means for holding said printing plate on said face plate, and means for giving said frame a `rotary adjustment in a Vplane parallel With said face plate, substantially as set forth.

15. The`eoinbination of a late carrier having a transparent face pate, holding bars adapted to engage and hold a transparent printing plate arranged thereon, means for adjusting said bars toward and from each other, a frame on which said bars are mounted and which is connected with said carrier, and means for giving said frame a rotary adjustment in a plane parallel with said face plate, substantially as set forth.

16. The combination of a plate'carrier having a. transparent face plate, holding bars adapted to engage and hold a transparent printing plate arranged thereon, rods on which said bars are adjustable toward and from each other, a frame to which said rods are secured and which is connected with said carrier, and means for adjusting said -frame relative to said carrier, substantially as set forth.

17. The 'combination of a holder for a sensitized part, a carrier for a photograhic printing plate facing the sensitized sur ace, a bak support' facing the rear side of the sensitized part, means for adjusting said back support toward and from said sensitized part, and means for adjusting said back support in a plane parallel with said sensitized art, substantially as set forth.

18. he combination of a stationary framehaving means for holding a sensitized part, a carrier for a photographic rinting plate adjustabl `mounted in said. rame, a

ack support acing the rear side of said sensitized part,` means for adjusting said back support toward and from said sensitized part, and two guiding means for said back support, ,arranged in a plane parallel with said sensitized part and at right angles to each other, substantially as set forth.

19. The combination of a stationary frame having means for holding a sensitized part, a carrier for a hotographic printing plate facing the sensitized surface, a back support facing the rear side of said sensitized part, a carriage which is longitudinally adjustable in said stationary frame, a carrier frame which is adjustable in said carriage and in Which said back support is arranged, and means for adjusting said back support in said carrier frame toward and from said sensitized part, substantially as set forth.

20. The combination of a holder for a sensitized part, a printing plate carrier, and a back support comprising a movable frame, a pressure plate movably attached theretoq means for adjusting said frame toward and from the sensitized part, and means for adjusting said plate in said frame toward and from the sensitized part, substantially as set forth.

,21. The combination of a holder for a sensitized-part, a printing plate carrier, and a back support comprising a movable frame, a` pressure plate movably attached thereto, pressure cams mounted in said frame and bearing against said pressure plate, and

means for adjustin said frame toward and from the sensitize part, a pressure plate movably arranged in said frame, and pressure devices engaging said pressure. plate and removabiy mounted in sald frame, substantally es set forth.

` Witness my hand in subscribing Witnesses.

WILLIAM C. HUEBNER.

W'itnesses: A

EDWARD WILHELM, C; B. HORNBECK.

means for adjusting said frame toward and from the sensitized part, substantially as set forth.

22. The combination of a holder for a sensitized part, a printing plate carrier, and i a back support comprising a movable frame, a main pressure plate attached to said frame, and a supplemental pressure plate detachably secured to the main pressure plate, substantially as set forth.

23. The combination of a holder for a sensitized part, a printing plate carrier, and a back support comprising a movable frame,

the presence of two 20