US1414280A - Photographic-printing apparatus - Google Patents

Description

W. C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR. 12. 1920.

Patented Apr. 25, 1922.

ISHhET$SHEET l.

f/VTO FTTOH/VEKS W. C. HUEBNER. PHOTOGRAPHIC PRINTKNG APPARATUS.

APPLICATION FILED MAR. 12, I920.-

Patented Apr. 25, 1922.

TSHEETS-SHEET 2.

W. C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR. 1 2. I920.

Patentd Apr. 25, 1922.

7 SHEETS-SHEET 3.

w. c; HUEBNER. PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR. 12,1920.

1,414,280. Pamnted Apr. 25, 1922.

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arrow/5 r's W. C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION El LED MAR. 12, 1920.

Patented Apr. 25', 1922.

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3y My 2% HTTOR/VEYJ W C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR-12,1920.

Patented Apr. '25, 19225 JIIIII v www W. C. HUEBNER.

PHOTOGHAPHIG PRINTING APPARATUS.

APPLICATION FILED MAR-121 I920.

Patented A r; 25, 1922.

1 SHEETS-SHEET 7.

11mm fisr res- PATENT OFFICE.

WILLIAM c. or BUFFALO, NEW YORK, Assicmon T HUEBNER. BLEISTEIN ,rn'm'mrs comrnmr, or BUFFALO, new YORK. 4

I To all'whmnz't may con'cerni Be it known that I, WILLIAM C. Hosanna; character wherelnthe printing and sensification.

a citizen of the United States, residing at Bu'fialminthe county of Erie and State of New York, have invented a new and useful Improvement in Photographic-Printing Apparatus, of which the following is a speci- This invention relates more'partic'ularly to improvements in photographic printing or composing apparatus of the general nature heretofore'invented, by me. These apparatus are intended for photographing any desired number of like or difi'erent'original prints in anyrequired predetermined an registered position and relative arrangement directly upon the sensitized surfaces of press plates which may be afterwards suitably finished and'used 1n mechanical printing presses for printing in one or more colors. These apacting means for effecting an accurate, relaparatus are adaptedfor various purposes, such for instance-as repeating prints from the same, transparent printing plate or negative in a requlred arrangement on a single sensitized press plate, which after development, is vused for mechanically printing a plurality of impressions; for composing 7 -work Where it is desired to place different subjectsin a predetermined arrangement on I negative or positive printing plate the press plate; and for making press plates for multicolor printing where it is necessary to photograph pri'ntsin exact .re ister on the different sensitizedpress plates t at areused in presses for printing the different colors. Such "apparatus ordinarily comprise a support for the sensitized press plate; a sup; port for holding a transparent photo raphic 5iereinafter called the printing plate) in contact with the sensitized surface of thepress plate, a pressure device orback support for causing an intimate, uniform contact of the 'sensi-. ti'zed surface with the printing plate; means for causing light to act throug'lfi the printing plate for photographing the 'f print on the sensitized surface; and adjustingmeans' for producing a relative movement between'the sensitized and printing plates parallel with the sensitized. surface to enable rints to bemade in desired predetermined ocations on the sensitized plate and for producing a relative movementbetween the sensitized and ne object of this invention is to provide rnoroemrmc-rnm'rine nrrana'rns.

Spe'ciflcation ot Letters Patent. Patented APL'25, 1922 f Application filed Karen 12', 1920. serial No. 365,244.

a simple and inexpensive apparatus of this facing upwardly and closed to place the plates in contact face to face. In the open i printing plate and the sensitized metal plate horizontal position-both the sensitized plate and the transparent printing plate can. be

.quickly and conveniently removed, re laced or adjusted, or otherwise made ready or exposure, after which the suplports can be quickly folded into the vertical position for register adjustment-and for making the exposures.

' j Another object is to provide anovel, quick tive adjustment of the printing plate,- sensi- "tized surface and pressure-device towardfand from each other, and "to determine the for ward position of the surface of the printing plate quickly and accurately tofunction as a limit stop and as a clearance device.

of this sort, of novel construction, wherein relative adjustments of theprinting (plate,-

evice the-sensitizedplate and the pressure can be utilized so that any desired portion of the sensitized surface can be caused to stand Another object-is to P vide an apparatus opposite the transparent printing plate, or, l

and the printing 'plate and pressure device adjusted to stan opposite the face and back t-ionary, sensitized surface. IL

the sensitized. plate canjbe held stationary,

respectively of -any desired-portion of' 'the sta-I Another object is to provide a main and an i I "auxiliary index'; head or. supporting device for the printing plate, 'whereb the printing plate can be angularly adjuste thereon, concentrieally with the main :index heafd,j and by moving the auxiliary head on the main head the .printing plate can also be adjusted to I positions eccentric'with regard to said main head'and turned to any, desired, angular position inv such'eccentric locations, so that locations near the edges" of the sensitized platen ments may be'ma'de, either when the plate is facing upwardly inf the apparaitvgg or smal'lfprintscan'be made in any position'in' on line 11-11, Fig. 9, showing the adjust when in a verticalposition and opposite the sensitized plate, and to improve photographic printing apparatus in the other respects hereinafter described and set forth in the claims.

lln the accompanying drawings:

Fig. 1 is a front elevation of a photographic printing apparatus constructed in accordance with one embodiment of the in-- vention and showing the sensitized and printing plates facing upwardly in adjust ing position.

2 is a similar view thereof, but with the parts ire-printing position.

3 is a fragmentary transverse sectional elevation thereof, on line 3-3, Fig. 2, but with the parts in printing position.

.Fig. i is a plan view of the apparatus with the parts in the same position as shown in 1.

Fig. -5 is a transverse vertical sectional View of the adjusting and supporting devices for the printing plate, on line 5--5, Fig. 4, on an enlarged scale. l ig. 6 is an enlarged side elevation of the pressure device for providing a close and uniform contact between the printing and sensitized plates, and with the parts in the position shown in Fig. 2.

Fig. 7 is a plan view thereof, partly in section on line 7-7, Fig. 2.

Fig. 8 is a front elevation similar to Fig.

1, of another embodiment of the invention.

Fig. 9 is a plan View thereof. Fig. 10 is a side elevation. thereof, but with the parts in printing position.

Fig. 11 is a longitudinal vertical section ing and supporting devices for the printing plate.

Fig.12 is a vertical sectional the pressure device.

Briefly stated, the photographic printing apparatus, of which two different constructions embodying the invention are shown in the drawings and hereinafter described, comprises a frame pivoted to swing vertielevation of cally on an upright support, and hinged at one end. to the adjacent end of a second frame which is pivoted to swing vertically on a support that is movable relatively to the first support, so that the two frames are adapted to be swung'like the leaves of a book, from an open position in which they extend horizontally end to end, to a closed position in which the frames stand vertically face to face.

One of the frames carries thetransparent printing plate with its holder, registering and adjusting means, and. the other frame carries the sensitized plate with its holder. When the frames are open both of the plates are exposed horizontally face uppermost, and are readily accessible for adjusting and changing them.

Means are provided for swinging one of the frames to and from the vertical-positions, and as the other frame is hinged thereto and pivoted on a movable support this frame will also swing on its pivot and at the same time will approach and contact with the first frame in vertical plane and they are then. l ed together by suitable means. This places the printing and sensi-. tized plates into 0; "ve relations facing each other the are into close contact for printing by a suitable pressure device. Means are also provided for moving one of the plates to clearance position a short distance from the other plate to permit relative adjustment of the plates in planes parallel to the sensitized surface for making prints on different portions of the sensitized plate.

In the construction shown in Figs. 1-7, the printing plate, and'pressure device are adapted "to be adjusted in directions at right angles to each other to place them opposite different, desired portions of the sensitized plate, whereas in the other construction shown in Figs. 8-12, the sensitized plate is adapted to be adjusted in two di rections between the prin plate and pressure device for this I urp c.

Referring first to *igs. 'l7, A and represent the two swinging frames carrying respectively the transparent printing plate C and the sensitized plate D. The me A is suitably pivoted, as by opposite lilllll'" nions a, to swing vertically on an upright support E, preferably fixed on a horizontal base F, and the frame B is similarly pivoted by trunnions b in an upright support Gr which is movable toward and from the sup-v port E, the support G preferably having rollers g arranged to travel in horizontal guide grooves g in the opposite sides of the base. The adjacent ends of the frames A and B are hinged together as hereinafter ex )lained.

he printing plate C is adjustably mounted a 16. The index head has a circular top plate provided with a central opening and peripheral gear teeth 19. It is rotated by a v pinlon' 20 meshing with said teeth and-es locked. inthe re uired position by a dog 21 which is adapte to be moved into and out of engagement with the teeth 19 by a screw 22 which is adjustable tangentially relative to the index head to provide a fine, accu rate adjustment thereof. The upper side of the index head is provided on opposite sides.

of its opening with transverse, parallel guide ribs 23, between which is slidably confined a slide 24' over the'central opening in the index head. Theslide 24'is provided with a circular opening 25 having an undercut edge which overhangs a bevelled annular shoulder 26 on an auxiliary rotary index head 27. This auxiliary index head is in the form of an annular'plate, but smaller than the main index head and is provided with peripheral gear teeth 28 with which a 'jinion 29 is adapted to' mesh for rotating it. he printingplate O is secured on the auxiliary index ead by suitable means, preferably consisting ofa plate holder30,carrying a fixed glass or transparent supporting plate 3.1 on the face of which the printing plate 0 adjustably secured by holdin devices 32 which engage the bevelled edges of the printing plate and are movably secured on blocks 33 which hold the glass supporting plate in 4. position. The plate holder 30 is preferably removably and detachably secured in a predetermined position on the auxiliary head by suitable mean ssuch as locking ins 34 secured in holes in the auxiliary head? F01 adjusting the slide 24 in the guides 23 radially relatively to the index head, the slide is provided (see Figs. 4 and 5) with a at lateral' extension 35 having a screw-threaded hole through which passes an adjusting screw 36 journalled parallel with the guide 23, on the index head 12. The ends of the v adjusting screw are suitably formed for the.

engagement of a crank or the like (not shown) for turning it. A pointer or index 7 markon the extension 35 cooperates with a scale on theindex head 12 to indicate the adjustment of the slide and'the scale is prefdirections from a zero point on erably graduated to read alike in opposite I the transverse axis of the index head.

The construction above described enables the printing plate C to beturnedto any: po-

sitionconcentric with the axis of the carrier I 10, by turning the main index head 12. The

plate can also be adjusted radiall to any desired distance to eitherside of t e center of the carrier and turned about a center eccentric to the axis of the carrier 10'and the index head '12 by means of the slide 24 and a auxiliary index head. 27. The printing plate can, therefore, be turned to any required angular position in any required. location with referencetolthe center of the main in dex head, either concentrically or eccentrically thereof. 3 Y

In addition to the above adjustments, the carrier 10 is arranged to be adjusted 'ifi-directions at right angles to each other parali lel with the sensitized plateforplacing the printing plate opposite different, required portions of the sensitized platel', Any suit-L shaft is also front end wit able means for this purpose can be'used. In the construction shown, the carrier I 10 is mounted to slide longitudinally of the apparatus in a carriage 40, which in turn is movable transversely of the apparatus on the swinging frame A. v

The carriage 40 comprises an open, rectangular frame having side bars provided with guide ribs 43 on their inner faces which enter grooves in the sides of the carrier 10, so that'the carrier may slide thereon. The

means preferably provided for moving the "carrier comprise two,-opp ositely disposed,

s 51 on theswinging spiral gears 49 in operative relation to the spiral gears 48. The shaft 50 is rotated for'turning the screw shafts 45 to actuate the carrier 10, by a suitable crank or handle ":(not shown), which is adapted o engage a clutch collar 53 or the like on t e front end of the shaft 50 The front end of the shaft 5O isalso preferably provided with a gra duateddisk or scale 54 which cooperates with ,a'fixed pointer 55 to indicate the adjiistment of the carrier 10.

' The transverse adjustment of the carriage 40 is attained as follows v A The swinging frame is also an open, rectangular frame, having front and -rear bars 60 and opposite end bars 61, and these end bars 61 are to slidel The carriage. is adjusted by a transverse .screwtlireaded shaft 63 jourrovided with suitable guides 62 on which t e carriage 40 is adapted nalled on the" frame parallel with the shaft 50, and a nut 64 on the adjacent end bar of the carriage 40 engaging the shaft 63 is adapted to move along saidshaft 63,when said shaft is rotated. The shaft'is rotated by a crankor the like (not shown), which is adapted to engage a clutch collar or other means'on the front end of the shaft. This referabl provided at its operating with a. pointer 65 on the swingin justments of thercarria e 40. I

The sensitized plate can be secured on the swinging frame B in any suitable manner. As "shown, the frame B which is an open, rectangular frame, substantially simi- -lar to the frame A, and comprising front and rear bars 70,and opposite end bars 7 a. gra uated disk 64", co- 5 frame A "for indicating the transverse a i 72, is hinged to the swinging frame A by the shaft 50, which passes through lugs 74.- on the frame B. A gripper bar 75 is secured to one edge ofthe sensitized plate and pins 76 at its opposite ends are adapted, according to the size of the plate used, to enter one or another of a series of pairs of holes 77 in the front and rear bars 7 O of the frame B. The opposite edge of the sensitized plate C is secured to another gripper bar 78 which is provided at its ends with nuts 80, engaging oppositely-threaded screws 81 jour-- nalled on the front and rear bars of the swinging frame B. The screws have their outer ends formed for the engagement therewith of a suitable crank (not shown) for turning them, to move the bar 78 away from the bar for drawing the sensitized plate taut. The outer sides of the nuts engage parallel guide -members 82,which aid in alinmg or retaining the gripper bar 78 in position.

This invention is not restricted to any particular holding means for the sensitized plate, and means such as shown in my a plication No. 279,492, filed Februa 2 1919, for this purpose can be employe but the sensitized and printing plate holders are both preferably of such construction that all parts of the holding means for each plate are disposed back from the plane of the operative surface of such plate, so that the surface of the printing plate C can have a perfect contact with the sensitized surface irrespective of whether either plate may be adjusted so as to project beyond the'edges' of the other plate.

In order to move the swinging frames from their horizontal position shown in Figs. 1 and 4, to the vertical position to place the printing and sensitized surfaces into contact for making the prints, the front bar 60 of the swinging frame A is preferably provided with a gear sector which is concentric with the axis of the trunnions, and is adapted to mesh with a pinion 96 secured on a shaft 97 which is journalled in the front of the support E. The outer end of the shaft is provided with a hand wheel 98 or the like for rotating the pinion. If the pinion is rotated counter-clockwise, the sector will cause the right hand end of the swinging frame A to swing downwardly and as the other swingingframe D is hinged thereto and is also journalled on the movable support G this frame will be simultaneously actuated and its left hand end a will move downwardly with the right hand end of the frame A. At the same time the movable standards G will travel to the left on the base of the apparatus so that the upper surface of the sensitized plate D will be brought into a vertical plane adjacent the printing surface of the printing plate C. A reverse operation of the hand wheel 98 will return the parts to the horizontal position. Y The two swinging frames A and B are locked together in their adjacent, vertical positions and the printing and sensitized surfaces permitted to be separated sufiiciently to allow relative movements therebetween without unlocking the frames, preferably as follows lin the position of the parts shown in Fig. 2, latches 100-011 the swinging frame A are adapted to enter recesses 101 on the adjacent side of the swinging frame B (see Fig. 4), and be locked to the frame B by sliding bolts 101 on the latter frame. The bolts are linked eccentrically to a rotatable member 105 actuated by a hand lever 106 or the like. When the latches 100 are in position in the recesses 101, the actuation of the lever 106 will cause the bolts 10 to enter notches in the latches and lock the frames A and .13 together. In this position the printing surface will be just in contact with the sensitized surface. The latches 100 are not rigid with the swinging frame A but are preferably formed on or secured to slides 107 movable in guides 108 on the frame. A shaft 109 journalled on the frame A is provided with eccentric portions 110 engaging in a ertures in the slides. When, therefore, t e latches are locked to the frame B, the rocking of the shaft 109 in one direction or the other will cause a limited relative movement of the frames A and B towards or from each other on the hinges 50, and suflicient clearance will thus be given between the printing and sensitized plates to permit the necessary adjustmentsof the printing plate B in a plane parallel to its surface for placing it opposite successive, redetermined portions of the sensitized p ate. When the printing plate C has been properly ppsitioned opposite and in contact with the sensitized plate D, it is necessary to apply pressure, preferably to the back of the sensitized plate, to ensure an even and close contact between the printing and sensitized surfaces. A suitable ressure device H for this purpose is provi ed, constructedas follows: i

A support 112 for the pressure device is arranged on the under or back side of the swingin' frame Band comprises a pair of longitu inal parallel guide rods 113 (see Figs. 1, 4, 6 and 7), secured at o posite ends in sliding brackets 114 and 115. he bracket 114 extends from the end of the frame B and has a sliding connection with the end rail 72 thereof and the bracket 115 preferably has a groove 116 adapted to slide on a rib on the other end rail 71 of the frame B. This bracket 115 is rovided with hearing sleeves 117 surrounding the pivot shaft 50 between and engaging the bearing brackets 52 of the carriage for the printing transversely of the apparatus as the print ing plate. The pressure'device is mounted on a carrier block 118 which is arranged to slide on the rods 113 and is adapted to be adjusted thereon longitudinally of the a paratus, as follows:

A screw-threaded shaft 119 journalled in the brackets lle and turns in a threaded hole in the carrier 118, and is connected at one end by bevel pinions, 120, 121 with a 1 short shalt 122. Thisshaft is journalled in the bracket 115 and has a bevel pinion 123 meshing with a bevel pinion 124:, which is journalled in the sleeve 117 of the bracket 115 and is splined on the hinge shaft 50. The rotation of this shalt 50 for adjusting the carrier 10 or the printing plate C will, therefore, produce a like longitudinal adjustment or the pressure device on the rods 113.. printing plate is adjusted either longitudinally or transversely the pressure device will be simultaneously and correspondingly adjusted. The pressure device H is substantially similar to those previously designed by me, and may be briefly described as follows: i

The guide block 1118 supports a sliding head 125 movable thereontowards and from the back of the sensitized plate in guides 126 and is actuated by a screw-threaded I shalt 127 swivelled in the block 118 and having a hand wheel 128 or the like for rotating it; The outerend of the sliding head .125

has a split ring or the like 129 adapted to be clamped on a cylindrical stud on rotatable head 130, and another head 131 is radially' adjustable on the head by means ofa screw shaft 132 and suitable guiderods 133. The head 131.carries a pressure block 134 or any suitable sort having a yielding pad or. surface, and. which is rotatable on the head 131 as by means of a shank on the block clamped in a split ring on the head 131 to permit an lar adjustments thereof. The radial an scribed permit the pressure head to be 10- 'justment .ofthe latter and .allow the use of cated directly opposite and in the same angu- 'lar position as the printing plate in any ad it will thus be seen that when the two rotatable adjustments de-' will always contact in the same predetermined plane and thus prevent the deflection and loosenin or creasing of the sensitized ited initial adjustment perpendicular to the printing surface. As previously explained the index head 12 has a screw-threaded connection with an adjusting ring 13. This ring 13 is held from endwise movement, but is capable of turning in its confining groove in the carrier 10, so that the index head 12 can be .advanced or retractedby turning the ring 13in one direction or the other rela-=' tively to the index head. The ring is normally locked to the index head so as to turn therewith when the latter is rotatably adjusted, as for instance by one or more set screws carried by the ring 13 (see Fig. 5).

and adapted to engage the threaded flange 1 10i the index head. The ring can be loo ened and turned to advance or retract the index head and again locked to the index head by means of a suitable tool applied to the set screws 1 10. 1 Any other suitable may be used for this purpose.

A suitable illuminating device, such arc lamp 143, mounted one. bracket 1 1 1 on the swinging frame A to move therewith provides means for illuminating the prints ing plate C when making an-exposure.

1n the modified form of the apparatus shown, in Figs. 8-12, two swinging frames A B are pivoted to swing vertically on a fixed support and a movable support 151 respectively, and are hinged together as be fore, but in this construction the frame A.- supports the sensitized plate l) which is adjustable in two directions perpendicular to each other parallel to the sensitized surface, and the frame B supports the printing plate C, which is rotatably adjustable on the frame by means of an index head 152.

The swinging frames A B are hinged together at 153 and are swung to adjacent parallel vertical positionsby a gear sector 154 and pinions 15'5 arranged and operated as in the first construction. The frames are locked in their closed, vertical positions by sliding bolts 156 on the frame A, which engage keepers 157 on the frame B. The bolts are actuated by a lever 158.

' \As shown, the sensltlzed plate D is mount ed ona plate holder 160 removably secured on a carrier 161 which is adjustable longiu tudinally of'the apparatus in a carriage 162, which in turn is adjustable transversely of the apparatus in the frame A. The carrier 161 and the carriage 162 both move in planes parallel to the sensitized surface. For moving the carrier 161, it is provided on opposite sides thereof with nuts 163 having screwthreaded engagement with" opposite screwthreaded shaftslfiet journalled in the carriage 162 and connected by spiral gears 165, Figs.

plate. For t is purposemeans are provided for giving the printing plate holder a lim-x 70 its lllli The tilt

she carriage 162 shown, comprises an open rectangular irarne slidahle on guides 7 169 on :iraine id and provided with. N0 engaging a transverse screw ch is journalled the frame A and is rotated by suitable cranlr tor adjusting the carriage, andis provided. with a graduated dish for indicating the adjustment,

"essure device shown. comprises a pressure och i723 rotatahl se'cnred on ahead 173 which is adjustable radially one second rotatahl head li or rotary adjust- 's shank is arranged ie sensit ed plate axis coincident wi o the a s oi the ting; plate when in pr orting bar N6 of the frame A it screw serves to move the shank ii 5 ressing sensitized plate against the printing relieving the pressure in this construction the circular den head 1552 is arranged to adjusting 1% which is screwed a threaded, circular opening in a plate 179 on the frame B. The adjnstinp; ring is confined in a peripheral groove formed partly in a clamping 180 secured loy screws 1811 to the index By loosening these screws lot the index h ad can he rotatahh in the ring 178 required po .nd there locked lrtening the screws, by turning; the ad ring 1Y8 relatively to the head WP on the latter is loose the ring, the index can be advanced or'retracted to adjust the printing plate C toward or from the sensitized plate D. The adjusting rii 178 is provided with a lever 182 for rotat ng it relatively to the indea head. llhis levereirtends through a slot 182* in one side of the frame B and is adapted to he secured to hold the ring'l'iii stationary lo a setscrew or other device 183. This construction can he used to move the printing plate toward the sensitized plate to provide clearance between the plates to erinit the desired adjustments of the sensitirzed plate parallel with the printing-plate when the frames A B are locked together.

Or, if desired,- the frames A B could he arranged in the hood 184 secured between the tine osition on b V swing their pivots n I a" 1 printing plate on the frame B to swing therewith, and is used to illuminate the printing their pivots iron positions in whi said printing and sensitised plates see i substantially some direction to prin oosi tions in Whichthe tes face each ad are adapted to so from the printing 1 2. in photog the coniaoination a support printing plate, a snppoi plate, a lined standard on W supports is pivoted, a movable standard on which the other support is pivoted, said sr ports losing hinged to each other and adopts for making which said printing 'tieed p s held face upwards to positions in which printing sensitised plates face each 0 and are adapted to contact, and ioi swinging said supports.

8. in photographic printi the combination or: a support ior a ent printing plate, a support for a plate, a iii-red standard on which on supports is pivoted to swing vertics ry, a standard on which said other support pivoted and which is movable towards and from. id standard, said suppo ts go d to each other so that the swi or one or said supports on 1ts standard will said inovalole standard to approach said i" standard and said supports swing positions in which said printing and sensi" tized plates are held face upwards to positions which they are iace to taco and 3 the combination of a holder for a transparent plate, a holder for a sensitized plate,

printing 1 a support on which one of said holders is pivoted, a movable support on which the other holder is pivoted, said holders being hinged to each other and adapted to swing on their pivots from positions in which said printing and sensitized stantiall v the samedirectlon to printing positions in which the plates face each other and are adapted to contact for making prints trom the printing plate, and means for locking said holders together in said printing position.

.5. In a photographic rinting apparatus, the combination of a hol er for a transparent plates face in sub printing plate, holder for a sensitized plate, a support'on which one of said holders is pivoted, a movable support on which the other holder is pivoted, said holders being hinged to -.;each other and adapted to swing on their pivots from positions in which said printing and sensitized plates face in substantially the same. direction to printing; positions inwhich the plates face each other and are adapted to contact for making prints from the printing plate, means for locking said holders together in said printing posltion, and means for sep aratln said plates a limited distance to permit re ative adjustments thereof without unlocking said supports.

6, in a photographic printing apparatus,

. the combination of a holder for a printing plate, a holder for a sensitized plate, means for supporting said holders, substantially horizontally end to end with'the printing and sensitized plates facing upwardly and for moving said holders to upright positions in which they face each other and in which ing said holders together when in said up right positions. a

7. in photographic printing apparatus,

the combination of two members arranged to swing vertically from substantially horizontal positions, one of said members adapted to support a printing plate and said other member adapted to support a sensitized plate, means for swinging said members to upright positions with said printing plate and said sensitized plate face to face, and means-for pressing said plates into firm contact.

8. In a photographic printing apparatus, the combination of two members arranged to wing vertically from substantially horizontal positions, one of said members adapt ed to support a printing plate and said other member adapted to support a sensitized plate, means for swinging said members to upright positions with said printing plate and said sensitized plate face to face, means for looking said members together in said upright positions, and a pressure device for pressing said lates into firm contact.

9.. n a photographic printing apparatus the combination of two members arranged to swing vertically from substantially horizontal positions, one of said members adapted to support a printing plate and said other member adapted to support a sensitized plate, means for swinging said members to upright positions with said printing platev and said. sensitizediplate face to face, means for locking said memberstogether in said upright positions, a pressure device for pressseparating said plates for permitting said relative adjustments thereof without unlock ing said members. j

10. In a photographic printingapparatus, the combination of two members arranged to swing vertically from substantially horizontal positions, one of said members adapted to support a printingplate and said other member adapted to support a sensitized plate, means for swinging said members to. upright positions with said printing plate and sensitized plate face to face, said printing plate supporting member having means for adjusting said plate in directions at right angles to each other parallel with the surface of said printing plate, and means for pressing said plates into firm contact.

11. in a photographic printing apparatus,

O the printing and sensitized plates are adapt-Qupright positions with said printing plate ed to contact face to face, and means for lockjusting said printing plate in a direction perpendicular to. its surface, and means for pressing said plates into firm contact.

12. In a photographic printing apparatus, the combination of two members arranged to swingvertically from substantially horizon tal positions, one of said members adapted to support a printing plate and said other member adapted to support a sensitized ,plate,'m,eans for swinging said members to upright positions with said printing plate and said sensitized plate face to face, said printing plate supporting member comprising a rotatably adjustable index head, means for securing said printing plate thereon, means for adjusting said indexheadlin directions at right angles to each other parallel with the surfaceofthe printing plate, and means for pressing said plates into firm contact.

the combination of two members arranged ltd Mid

iit

to swing vertically from substantiallyhorizontal positions, one of said members adapted to support a printing plate and said other means for swinging said members to upright positions with said printing plate and said sensitized plate face to face, a main index head rotatably mounted on said printing plate supporting member, an auxiliary index head which is adjustable on the main index ing said plates into firnf contact, means for head to different relations to the axis of said securing relative adjustments between said printing and sensitized plates, and means for mainindex headand on which said printing plate is secured, said a'uxiliary'index head 12 member adapted to support'a sensitized plate, v

ill

being also rotatably adjustable, whereby said printing plate may be rotatably adjusted concentrically or eccentrically relative to the axis of said main index head in a plane parallel to the surface of the printing plate,

and means for pressing said plates into firm contact.

14. In a photographic printing apparatus, the combinationof two supports, one for a printing plate and the other for a sensitized plate, a rotatable main index head on one of saidsupports, an auxiliary index head which is adjustable radially and also rotatably on said main index head, said adjustments being parallel with the surface of the printing plate, means for securing the printing plate on said auxiliary index head, means for pressing said plates into contact.

lln a photographic printing apparatus, the combination of two supports, one for a printing plate and the other for a sensitized plate, a rotatable main index head on one of said supports, an auxiliary index head which is adjustable radially and also rota ably on said main index head, said adjustments being parallel with the surface of the printing plat/e, means tor securing the print ing plate on said auxiliary index head, means for adjusting the printing plate perpendicular to its surface, and means for pressing said plates into contact,

16. ln a photographic printing apparatus, the combination of two supports, one for a printing plate and the other for a sensitized plate, a rotatable main index head on one of said supports, an auxiliary index head which is adjustable radially and also rotatably on said main index head, said adjustments being parallel with the surface of the printing plate, means for securing the printing plate on said auxiliary index head,

ill

means for adjusting the main index head in directions at an angle to each other parallel with the sensitized surface, and means for pressing said plates into contact.

1 l7. in a photographic printing apparatus, the combination of a fixed base, a standad rigid thereon, a second standard movable on said base toward and from the lined standard, a support for a transparent print ing plate pivoted on one ot said standards,

a support for asensitized plate pivoted on the other standard, a hinge connecting said supports, and means on one oil said standards for swinging said supports on their pivots from substantially horizontal positions in which said printing and sensitized plates are facing upwardly to upright positions in which said printing and sensitized plates are in contact, means for applying pressure to said contacting surfaces, and means for illuminating said printing plate for producing an image on said sensitized plate.

18. In a photographic printing apparatus,

the combination of two members, one for a printing plate and the other for a sensitized plate, said members being mounted to swing from positions in which said printing and sensitized plates are held face upwards to positions to place said printing and sensitized plates face to face for printing, a pressure device for pressing said plates into firm contact, and means for moving said printing plate and said pressure device relative to said sensitized plate to corresponding predetermined positions.

19. In a photographic printing apparatus, the combination of two members, one for a printing plate and the other for a sensitized plate, said members being mounted to swing from positions in which said printing and sensitized plates are held face upwards to positions to place said printing and sensitized plates face to face for printing, a pressure device for pressing said plates into firm contact, said printing plate and said pressure device being operatively connected to move simultaneously to like predetermined positions relative to said sensitized plate, and means for moving saidprinting plate and said pressure device.

20. "in a photographic printing apparatus, the combination of two members, one for a printing plate and the other for a sensitized plate, said members being mounted to swing from ositions in which said printing and sensitized plates are held lace upwards to positions to place said printing and sensitized plates face to face for print ing, a pressure device for pressing said plates into firm contact, said printing plate and said pressure device being operatively connected to move simultaneously to corresponding predetermined positions parallel to said sensitized plate in either of the two positions of said swinging members, and means for adjusting said printing plate and said pressure device.

21. ln a photographic printing apparatus, the combination of two members, one for a printing plate and the other for a sensitized plate, said members being mounted to swing from positionsin which said printing and sensitized plates are held face upwards to positions to place said printing and sensitized plates taceto face r'or printing, a pressure device for pressing said plates into firm contact, said pressure device being mounted on and movablewith one of said members, and means for adjusting said printing plate and said pressure device parallel with and relative to said sensitized plate.

Witness my hand this 9th day of March, 1920.

f WILLIAM c. HUEBNER.

Witnesses:

W. B. -PRITCI-IARD, M. J. Prruin'.

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