US1784206A

US1784206A - Photographic process printing machine

Info

Publication number: US1784206A
Application number: US745102A
Authority: US
Inventors: William J Snyder
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-10-22
Filing date: 1924-10-22
Publication date: 1930-12-09
Anticipated expiration: 1947-12-09

Description

PHOTOGRAPHIC PROCESS PRII ITING MACHINE Filed Oct. 22, 1924 5 Sheets-Sheet 1 )1 TTORNE Y W. J. SNYDER PHOTOGRAPHIC PROCESS PRINTING MACHINE Filed Oct. 22, 1924 5 Sheets-Sheet 2 INVENTOR' 'W/f/ru/ /der A TTORNE) Dec. 9, 1930. w, SNYDER 1,784,206

PHOTOGRAPHIC PROCESS PRINTING MACHINE Filed Oct. 22 1924 5 Sheets-Sheet 3 INVENTOR Id/II J. 5/214 Dec. 9, 1930. 'w. J. SNYDER PHOTOGRAPHIC PROCESS PRINTIN MACHINE 5 Sheets-Sheet 4 7 Filed Oct. 22, 1924 m3 QQ nQ *3 Li 4%: 3 m 3 -33 LE INVENTOR J5 ae l.

ATTORNEY Dec. 9, 1930.

W. J. SNYDER PHOTOGRAPHIC PROCESS PRINTING MACHINE 5 Shee*csSheet 5 Filed Oct. 22, 1,924

[NV/INTOR A TTORNE Y Patented Dec. 9,1930

UNITED STATES,

WILLIAM J. SNYDER, or'roa'r LEAVENWORTH, KANSAS rno'roeaarmc niocass PRINTING macrrma Application filed October 22, 1924. Serial 1T0. 745,102.

This invention relates to the photo-litho gra bio and similar process methods of producing photographically faces, such as metal press plates, paper, clotli,

glass, film, etc., the desired designs, printed matter, maps, photographs, etc., according to predetermined position, relation to each other, ornumber of similar or dissimilar subjects that may he wanted on such single sensitized surface for the purpose of printing lithographically, or reproducing photographically, duplicates of the original drawing, sketch, map, printed matter, photograph or image.

The'primary object of the invention is to provide a machine or apparatus capable of having placed therein photographic negatives or positives from which prints may be made on sensitized surfaces, such as metal pressplates, blue-print or process paper, film, etc., and to position, space or align such prints on the sensitized surface according to a predetermined plan, the sensitized press plate, or paper, etc., being held in position in a novel holder constituting part of the invention. It is also the object of the invention to provide a combination holder or apparatus on which may be placed a sensitized metal presspl'ate in accurate alignment upon which images from negatives or positives placed in the proper part of the machine and brought into close contact with the sensitized surface, may be printed as above mentioned. The

- plate holder may be converted into a vacuum printing frame base and means is provided or the adjustment of the frame and glass to the holder by novel means to provide a metal I press plate holder or vacuum printing frame,

capable of being rotated through a vertical.

' plane, to receive the sensitized press plate in a registered position; The vacuum printing frame formed by the combination of the plate holder, the frame and the glass cover is capable of being used for numerous purposes in process printing. I v

\ The invention is designed tofacilitate and improve presentmethods .of making up lithographic printing plates by providing means for fixing the sensitized plates to a holder in 'a registered position in alignment on sensitized -surnegative is correctly placed in that part of the machine designed to receive it.

parallel to the gripper edge of the plate, and

in relation to the vertical and horizontal centers of the negative or positive from which the print is to be made, when said positive or The holder is designed to permit photographing in a radial or angular direction on the sensitized plate or other surface, from a negative or positive, by providing means to rotate the holder through a vertical plane of 360 degrees and to fix it rigidly and accurately in a predetermined positionv in relation to any fractionalpart of the circle, and means is provided to move the sensitized plate orother sensitized material into close contact with the negative or positive from which the print is to be made without materially affecting the registered alignment of said plate or surface.

The invention consists in certain novel parts and combinations of parts, all of which will be specifically referred to hereinafter, reference being had to the accompanying drawings, in which Fig. 1 is a perspective view of the complete machine, a part of the frame and glass and hangers of the vacuum printing frame being shown in the ofl position.

Fig. '2 is a side elevational view of the machine, the frame, glass and hangers for vacuum printing frame are not shown.

Fig. 3 is a vertical, longitudinal, sectional view through the machine, showing the plate holder with the frame and glass in position as a vacuum printing frame.

Fig. 4 is a perspective View of the press plate holder, or vacuum frame back wall.

Fig. 5 is a similar view of the negative chase and glass negative.

Fig. 6 is aperspectiveview of the negative chase holder.

Fig. 7 is a sectional view on the line 7-7 of Fig. 4. a

Fig. 8 is a fragmentary diagrammatic view of the press plate illustrating the holes through which the positioning pins project, and fix the plate to the holder.

Fig. 9 is a sectional view on the lire 9--9 of Fig. 5.

Fig. 10-is a perspective view of one of the negative clamps.

Fig. 11 is a view showing the locking lever for locking the chase holder and light box in fixed' position, vertically upon the carriage.

Fig. 12 shows the plate holder apparatus arranged as a vacuum printing frame and the overhead track for moving the frame and covering lass aside when the apparatus is used to ma e contact prints from glass negatives or positives, and

Figure 13 is a sectional view through one of the side rails of the printing frame showing a positioning pin in elevation.

The machine is illustrated as comprising a skeleton base 1

havingside rails

2 and 3 in the form of channels. The channels constitute rails for a movable carriage, generically referred to by the reference numeral 4.

The upper outwardly disposed flanges 5 and 6 of the

channels

2 and 3 are provided with openings 7 and 8 to receive the toes of dogs or detents on the carriage to hold the carriage in fixed position as will be hereinafter apparent. The carriage 4 has two standards or side members 9 and 10 which are connected together at their upper ends by across bar 11 and at their lower ends by the channel shaped

cross bars

12 and 13. The carriage is provided with rollers 14 which ride upon the flanges 5 and 6 of the

rails

2 and 3. The carriage is adapted to be moved along the rails by rotating the pinion shaft 15, mounted in the carriage and carrying pinions 16, one for each rack 17 and 18. The pinions engage the teeth of the racks 17 and 18 so that when the shaft is turned, the carriage will be moved longitudinally of the base frame.

The shaft 15"may be turned by a crank (notshown) adapted to engage the polygonal end 19 of the shaft 15 andthe carriage carriers'two pivoted dogs or detents 20 and 21, the toes of which may-engage the openings 7 and 8, and in the flanges 5 and 6, Fig. 1 to hold the carriage in fixed position. The carriage 4 has a base and a superstructure. The base of the carriage consists of the

blocks

22, 23, 24 and 25.

The blocks 22 and 24 are connected by a cross bar 26 preferably round, and a similar round cross bar or roll 27 connects the

blocks

23 and 25. The superstructure includes the The member 9, has two

legs

28 and 29 web 36 with a collar 37 and there is a screw or worm rod 38 passing through the

collars

34, 37 and threaded collar 35.

The worm has a polygonal end 39 to receive a crank (not shown) so it may be engaged to turn the worm and since the

legs

28, 29, 31 and 32-are transversely movable on the rods or

bars

26 and 27, it will be apparent that the super-structure of the carriage can be adjusted transversely of the base and in order to insure: an exact positioning of the superstructure on the base, I prefer to calibrate one of the

rods

26 or 27, so I have shown the rod 27 calibrated as at 40 and I have shown a pointer 40' on the leg 32 so that the operator may knowthe extent of shifting movement of the super-structure of the carriage, micrometer adjustment being made on calibrated dial 40".

The; superstructure carries a vertically adjustable light box 41 which is disclosed as a rectangular hollow structure constructed to permit no harmful actinic light to escape and provided with alight panel 42 therein, carrying lamps 43 which may be longitudinally adjusted toward the open end of the light box for the purpose of focusing the lights with re spect to the negative or screen through which the light is to be projected to act upon the sensitized surface of the printing plate, paper or film, or upon the sensitized surface of the plate, paper or. film in the vacuum frame as the case may be.

"The light box is connected by screws 41 to the rectangular chase holder 60 to which cables 44 and 45 are connected by means of

eye bolts

61 and 62. The cables pass over

pulleys

46 and 47 carried by a. shaft 48 mounted in bearings upon the top of the super-structure and the ends of the cables 44 and 45 distant from the ends connected to the chase holder are provided with counter-balance weights 49 which slide within the superstructure and within the side members 9 and 10.

- The shaft 48 carries a mitre gear 50 at one end which meshes with a mitre gear 51 on a shaft 52 in bearings 53 and 54 on side member 10. The shaft 52 is provided with a mitre gear 55 which meshes with a mitre gear 56 on shaft 57 in bracket bearing 58 so that when the polygonal end 59 of shaft 57 is engaged by a crank 57 and the shaft is turned, a turning movement will be imparted to theshaft 52 to turn the shaft 48 and thereby raise or lower the chase holder and the: light box. The chase holder is provided with

stop members

63 and 64 on one vertical rail, the top and bottom rails being provided with overlapping

bars

65 and 66 to provide

grooves

67 and 68 to receive the upper and lower edges of the negative chase or holder 69. .7 The lower bar 66 is preferably fastened rigidly to the chase holder 60 while the bar 65 has slots 70 set in angles through which pins 71 project into the chase holder so that the bar 65 can be raised and lowered (see Fig. 6). When the negative chase is placed into the chase hol'der, it may be locked to the chase holder by the

cams

72 and 73, the former locking the lower edge of the negative chase 69 in the groove 68 and the-cam 73 locking one side edge of the negative chase against the

stops

63 and 64.

On one side of the chase holder is a bracket 74 with a locking lever 75 which will hold the chase holder and light box in fixed vertical position to prevent accidental movement after the adjustment has been made. This is best shown in detail in Fig. 11. The bracket also carries a pointer 76 which co-operates with the vertical calibrated scale 77 on the side member 10 so that the proper vertical adjustment of the chase holder may made. The negative chase or holder 69 carries

aplurality ofengaging plates

78, 79, 80, and 81. One of these plates 78 is shown in detail in Fig. 10. It consists of a flat portion 82 with

outstanding lips

83 and 84 to engage over the beveled edge 85 of the plate glass 86. The

fiat portion 82 is provided with

elongated slots

87 and 88 through which headed pins 1 89 and 90 project. The plate there-fore has adjusted against the beveled edges of the longitudinal movement and it is urged against beveled plate glass edge engagingpositions by a screw 91 which extends through the negative chase and which bears against the inwardly disposed lip 92 on the fiat portion 82. This is clearly shown in Fig. 9.

After all of the

plates

78, 79, 80 and 81 are glass, the glass will be held fast to the negative chase and in orderto provide against sidewise movement of the negative, I provide the side stop lugs 93 and 94 (see Fig. 5). The glass plate containing the matter to be reproduced is adjusted so that the register marks provided thereon are exactly parallel to the two bearing edges of the chase 69.

The press-plate holder 95 has a hub 96 with a threaded bushing 97 therein, the hub being mounted on a shaft 98 in a bearing 99 carried by the standard 100. The threaded bushing 97 is engaged by a threaded collar 101 rotatably mounted on the standard and provided with spokes or hand holds 102 whereby the threaded collar may be turned to shift the shaft 98 longitudinally in its hearings to move it into binding contact with the plate glass negative or positive after the carriage has been moved up to the plate.

This is a final adjustment for the purpose of insuring intimate contact between the negative and the printing plate so that the photographed objects willbe sharply defined upon the plate.

The plate holder 95, a reinforced casting, is provided on its face with a yielding material such as cork indicated at 103 and a rubber mat 104 is faced on the cork, the

facing being providedwith a corrugated and thin flexible metal plates 105 under the corrugated border at each corner under which the corners of the press plate are inserted.

The printing plate holder carries spring actuated positioning pins 106 and 107 with set-screws 108 (see Fig. 7 to be received in the

keyhole slots

109 and 110 of the sensitized plate 111, which is fixedin position by screwing in the set-screws, 108, in

pins

106 and 107. I The sensitized press plate or other surface to be photographically printed upon is fixed to the holder in the same manner, or by other practical methods. The plate holder becomes the back wall for a vacuum printing frame by the placing of frame and glass 134, Fig. 1, on the plate holder 95 as shown in Fig. 3, the frame 112 fitting over the edge of the plate holder 95 and fastened by the J-bolts 113. The shaft 98 carries a gear 114 which meshes with a pinion 115 on, the counter-shaft 116 carried by the standard 100. The counter-shaft 116 carries a gear 117 which meshes with a pinion 118 on the pinion shaft 119 carried by the standard, the shaft 119 being provided with a polygonal end 120 corresponding to the polygonal end 121-on shaft 116 so both of the shafts can be turned by

suitable cranks

116 and 119.

The gear 114 is provided with a plurality of openings 122 to be engaged by a sliding detent 123 in the form of a bolt in standard The bolt is provided with a handle 123a which extends through a slot 123?) in the standard. These openings 122 are shown as ninety degrees (90) apart so that the plate holder 95 can be adjusted and held in fixed position by the bolt at different points ninety degrees (90) about the circle, which represent the most used operating positions.

Therotative' adjustment of the plate can be determined accurately from a calibrated scale 124 on gear 114 through the medium of the pointer 125, and the shaft 119 carries a disk 126 with a calibrated scale 127 on its periphery co-operating with the fixed pointer 128. The rough adjustment will be made by turning'the shaft 116 and a fine micrometer adjustment will be made by turning the shaft 119 and when the final adjustment is made the screw 129 in the bearing clamp 130 in which shaft 116 is located, may be screwed up so that the shaft 116 cannot turn, then the plate holder will be held rigid.-

The back of the plate holder 95 is provided with an opening 131 communicating with'an exhauster 132 through the medium of a conby spring hangers 136, theframe 112 being adapted to be clamped upon the plate holder 95 by means of the dove-tailed portion 137 on the lower part of the frame 112, fitting over bevel edge 138 on face plate 95, the glass 134 in the frame being forced against the corrugated raised border on mat 104 by J-bolts 113, thus sealin the interior of the frame against the rea y admittance of air.

When the parts'are properly assembled and it is desired to make up a lithographic press plate, the metal press plate is prepared and sensitized by well understood methods, then attached to the plate holder 95 as heretofore described. The negative or positive, on plate glass, is then placed in the chase and adjusted as before explained, the chase is then placed into the chase holder 69, Fig. 5, and is locked into position by the

clamps

72 and 73. The superstructure or carriageis at the rear limit of the track or channels for convenience in placing the chase into the holder. It may now be moved forward until

detents

20 and 21 engage in slots 7 and 8 in the

channels

2 and 3, Fig. 1, thus locking the carriage against recession when pressure is I applied to the face of the negative or positive glass,-the plates 20' and 21, holdin the super-structure against any material ackward tilting. The face of the negative is now about one-fourth inch from the surface of the sensitized press plate and it is assumed that the negative is exactly aligned with the vertical and horizontal centers of the machine with reference to the several calibrated dials and scales, and that the sensitized press plate is fixed in the plate holder so that the vertical and horizontal centers of the surface of the plate are in exact alignment with the vertical and horizontal centers of the negative in the chase.

Fig. 2,

The threaded collar 101, Fig. 3 is turned by hand holds 102; the late holder with the sensitized press plate xed to it is moved on shaft 98 into contact with the negative, the degree of pressure required for perfect contact being left to the operator and will be indicated in practice by the calibrated scale and pointer 139, Fig. 2. The negative in the super-structure or carriage having been moved to the desired area of the sensitized press plate and when proper contact between the press plate and the negative is obtained, the proper exposure is made. When duplicate prints from the same ne ative are desired, the pressure is release between the press plate and negative, and by the means heretofore described, the negative is moved to the next predetermined position,- pressure contact being again obtained and another exposure is made, and so on for the required number ofprints desired on that plate.

When it is desired to use the holder apparatus as a vacuum printing frame, the sensitized press plate is fixed to the plate holder as before described, (blue-print or process paper, films .or other suitable sensitized surfaces may be fixed to the mat 104, Fig. 4, with adhesive tape or other means) the negative or positive original matter, on. transparent or translucent material, that it is desired to reproduce is fixed to. the sensitized surface of the press plate, paper or film by the use of adhesive tape, or like substance, in the desired position and the frame containing the covering lass is rolled into position and clamped to .t e plate holder as already described, and as shown in Fig. 12. The exhaust pump is operated to obtain sufficient vacuum, and thereby cause contact between the sensitized surface and the negative or positive. The whole is now ready for exposure to light. The exposure is made by moving the super-structure or carriage carrying the light box to the required distance, and moving the light panel and lights to the front of the light box in order to eliminate shadows and obtain an even illumination over the entire surface to be exposed to the light. When the exposure has been made, the frame is released and moved aside by the means provided, thus the invention provides a convenient vacuum printing frame as well as a rotatable holder for press lates to be photographically printed on om negatives or positives on plate glass, movable at the will of the operator to any area of. the sensitized surface, and also permitting the image or design to be printed at any angle or on any part or the whole of a circular areaof the sensitized surface of the plate;

Complete control over the position the image or desi isto be given on the sensitized surface of t e ress plate or other material is afforded by tliis inventionythe ress plate holder may be adjusted to any position about the axis of the shaft 98 and the negative or positive in the chase holder may be adjusted vertically or laterally as heretofore described, so that there are really three variables included in the relative positioning adjustment between the press plate and the negative.

The improvements of this invention include a design of construction that is capable of accurate manufacture without prohibitive cost, accuracy and simplicity of operation, a holder apparatus for sensitized press plates, rotatable at will, which may be converted into a vacuum printing frame'quickl and conveniently, which will receive the light for exposing the sensitized surfaces contained therein from the same lights used when using the machine as a photo-litho composing or printing machine, thus affording to the user of the invention a combination photo-lithographic composing or printing machine and process printing vacuum printing frame.

While I have specifically described in detail the various elements which make up the illustrated embodiment of my invention, I

do not wish to be limited to the exact details What I claim and desire to secure by Let-' ters Patent is:

1. A photographic process printing machine comprising two main members, one of the members consisting of alight box, and a negative holder carried by the light box, the other main member consisting of a sensitized sheet holder having a plurality of portions registerable individually with the negative holder, means for moving the light box horizontally and vertically to a selected position with respect to the sensitized sheet holder, means for rotating the sensitized sheet holder, said sheet holder being rotatable to position a selected portion in registry with the moved light box and negative holder, and means for locking the rotatable member in adjusted position.

2. A photographic process printing machine, comprising a light box having a source of light therein, a negative holder carried by the light box, a sensitized sheet holder for cooperation with the negative holder and the light box, means for rotating the sensitized sheet holder about its axis, said means comprising a high speed mechanism and a low speed mechanism.

3. A photographic process printing machine, comprising alight box having a source of light therein, a negative holder carried by the light box, a sensitized sheet holder for cooperation with the negative holder and the light box, means for rotating the sensitized sheet holder about its axis, said means com:

prising a high speed mechanism and a low speed mechanism, and means for adjusting. the sensitized sheet holder longitudinally of its axis.

4. A photographic process printing machine comprising a negative holder movable in a limited plane, a sensitized sheet holder substantially co-extensive with said plane and rotatable on the axis of said plane, means for moving the negative holder to a selected position in its plane, means including a perforate gear for rotating the sensitized sheet holder about its axis through uniform parts of the circle to position a selected portion of the sensitized sheet holder with respect to the moved negative holder, means for holding the sensitized sheet holder in adjusted position including a pin slidable in said gear perforations and means for projecting light through the negative holder.

5. A photographic process printing machine comprising a negative holder and a ro tative sensitized material holder, the sensitized material holder having a surface area in excess of that of the negative holder, and means for effecting rotative adjustment of the sensitized material holder over the face of the negative holder, including a shaft fixed axially to the holder, a gear wheel keyed to said shaft, and means for fixing the wheel in holder-adpxsting position.

- 6. A photographic process printing machine, comprising a rotative sensitized material holder and a negative holder, the sensitized material holder having a surface area in excess of the negative holder, means for moving the negative holder, means for rotating the sensitized material holder, portions of the material holder being positionable by said rotation in relation with said moved negative holder, said rotating means including a wheel having circularly disposed graduations corresponding to said portions, and means for effecting adjustment of the negative holder across the surface of the sensitized material holder.

7. A photographic process printing machine comprising a frame, a carriage transversely movable over the frame, a negative holder vertically movable in the carriage, a sensitized sheet holder supported in parallel relation with the plane in which the negative holder moves and rotatable on its axis, and means for rotating the sensitized sheet holder to position a selected portion thereof in registry with the positioned negative holder in cluding a gear wheel rotata le with the sen sitized sheet holder and having openings adjacent its periphery aligned with vertical and horizontal bisectors of the sensitized sheet holder, and a pin slidable in the support for engagement with a selected one of said openingsfor fixing the rotatable sensitized sheet holder in selected relation to the negative holder.

8. A photographic process printing ma chine. comprising twoir-main members one of the members'consisting of a light box and a I negative holdercarried by the light box, the

other main member consisting of a sensitized sheet holder having a plurality of portions registrable individually with the negatlve holder, means for moving the light box hori .zontally and vertically to a selected position with respect to the sensitized sheet holder, and means for rotating the sensitized sheet holder, said sheet holder being rotatable to position a selected portion in registry with the moved light box and negative holder.

In testimony whereof I aflix my slgnature.

'WILLIAM J. SNYDER.