US1276476A - Photographic-printing machine. - Google Patents

Description

I. P. B'ARROWS. PHOTOGBAPHIC PRINTING MACHINE.

APPLICATION FILED OCT- 26, "H6. I 1,276,476. v Patented Aug. 20, 191&

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GU 0: we 1 I. P. BARROWS.

PHOTOGRAPHIC PRINTING MACHINE. APPLICATION EILED OCT. 26. 1916.

Patented Aug. 20, 1918.

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fsnacfifiarrazazs 1; P. BARROWS. PHO'TOGRAPHIC PRINTING MACHINE.

APPLICATION FILED OCT. 26. I9I6.

Patented Aug. 20, 1918.

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STATES PATENT OFFICE.

ISAAC r. rannows; or mom normwnsr VIRGINIA.

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Specification of Letters Patent.

Patented Au'g. 20, 191 8.

Application-filed October 26, 1916. Serial 1%. 127,930.

To all whom it may concern:

Be it known that I,.IsAAo P. BARROWS, a citizen of the United States, and resident of Mount Hope, in the county of Fayette and State of West Virginia, have invented certain new and useful Improvements in Pho- I tographic-Printing Machines, of which the following is a specification.

The present'invention relates to the artof photography and particular refer-.

ence to new and useful improvements in photographic printing machines.

The primary object of, my invention'is' to provide a printing machine having simuljustable supporting frame therefor;

taneously operable feeding means for the sensitized paper and films when in a roll or strip, means bein provided for automatically' applying a lig t' to the film and sensitized paper to print upon the latter.

Another object of'my invention is to provide a machine of the class described having automatic means for simultaneously feeding sensitized paper,and a ,film, and means for bringing saidpaper and films into relatively close proximity for printing,

cutting means being automatically operable by the feeding mechanism.

A further object of my invention is to provide a machine of the class describedwhich is simple in construction, eifective in operation, strong and durable and. cheap to manufacture.

Other objects and advantagesto be derived" from the use of my improved photoview of a Fig. 6, is afragmental detached perspec-.

tive view of the cutting elementand ad- Fig. 7 is an enlarged sectional view of a ishi able gegr fgr drivingthe rollers;

and

Fig. 8 is an enlarged fragmental perspec- I tiveview of the circuit closing element for supplying light to the film.

Beferrmg more particularly to the drawing wherein similar characters of'reference "designate like and corresponding parts throughout the various'views, H designates in its entirety the light housing in which is contained a suitable light source, preferably electrical (not shown).

The housing H is provided with side and end. walls 10 and 11, the same supporting:

a top frame 12 in which is mounted a transparent plate A pair of side flanges 15 and 16 are arranged alongthe top frame l2,"said flanges supporting bearing arms 17 on which is revolubly mountedthe roller .18, said roller serving to carry the sensitized paper designated 19. A pair of arms 20 extend from the rear end of the housing 8 to support a roller 21 on which is arranged the roll film 22, the web 23 of said film being drawn across the plate 13. The web 24 of the sensitized paper is drawn\ across the plate 13 above the film for the printin operation'to be described in detail hereina er.

I provide means for feeding the film and sensitized paper, said means including two sets of feeding rollers 26 and 27 arranged preferably inpairs on shafts 28 and 29, said shafts being journaled in the side portions 30 of a frame F. The free ends of the shafts '28 and 29 extend beyond one of the sides 30 and carry pinions 31 and 32, the pinions 31 being in relative meshing engagement as are the pinions 32.

I provide means for imparting intermittent movement to the pinions 31 and 32, said means including a relatively large gear wheel 33 journaled at- 34 to the flange 15. The gear 33 is in meshing engagement with the uppermost of the pinions 32, said ear also being in meshin meshed with the innermost pinion of theset 31. A ratchet wheel 36 is formed integrally with the gear 33, a lever 37 bem ournaled on the bearing 34 and provide with a pawl 38 for engagement w th said' ratchet wheel. A semi-circular guiding frame 40 is mounted on the housing 8 as at 41, the freeend of said frame being formed with a leg 42 set as at 43 to embrace the under mar f a1 edge of-one of the side portions 30 o the frame F and'being perma engagement wit a f sliding pinion 35, sai vpinion being in turn nently secured, thereto. The leg 42' forms a cross-head guide for a purpose which will hereinafter appear. I

In order to brin the film and sensitized paper into relative y close proximity with each other and said plate 13, I provide a presser 45 arranged above said film and sensitized paper. A bearing block 46 is carried by the platen in which is journaled the crank portion 47 of a crank shaft 48, said crank shaft being journaled in bearings 49 mounted on the flanges 15 and 16. The free end of the crank shaft 48 is bent downwar'dly as at 50, a curved bolt 51 passing through said portion 50, one end of the bolt having a nut 52 mounted thereon and the other end of the bolt'being pivotally connected at 53 with the lower free end of the lever 37. It will thus be seen that when the lever 37 is oscillated in the direction of the arrow in Fig. 1, the pawl 38 will engage the ratchet wheel imparting rotary movement thereto which will in turn be imparted to the rollers 26 and 27 through the medium of the pinions 31, 32 and 35. The free end of the paper and film is engaged between the rollers 27 and 26, respectively, and it will thus be seen that when movement is imparted to said rollers the paper and film will of the arm 56 so that when said arm e gages said circuit terminal a circuit (not shown) wlll be closed to energize a li ht source (not shown) Within the housing lif I provide means for cutting the sensitized paper after the same is printed, said cutting means including a bar 62 arranged on top of the sides 30 of the frame F, a pair of strips 63 mounted on said sides serving as track-ways for said bar. The bar is provided with a reinforcing strip 64 bent on its freeendsto form flanges 65 for engagement with the track-ways 63, a set screw 66 serving to lock said bar 62 in adjusted position on said track-ways.

A knife-frame K is provided U-shaped 1n configuration and including a channel base portion 67 and parallel vertical arms 68, said arms extending through openings 69 in said bar 62 and strip 64, the upper free ends of arms 68 being twisted as at 7 0 and bent upon themselves to form supports, an 1ionchned knife blade 71 being carried therey. wlth one of the marginal edges of the strip 64 to perform a cutting operation. The

frame K is maintained out of cutting usit1on normally by means of a pair 0 fiat springs 72 anchored at 73 to the under sur face of the bar 62, said springs extending in The knife blade is adapted to co-act,

opposite directions and connecting to the c annel member section. 67 by means of links 74.

The mechanism for vertically reciprocat ing the knife blade includes a rocker shaft 7 5' preferably polygonal in cross section and carrying a cam 76, said cam being located within the channel member 67. Said cam is freely slidable on the shaft 75 but turns with the shaft. One end of the shaft 75 is mounted in a bearing plate 76 carried by the free end of the frame F, the opposite end of the shaft being journaled at 77 in one of the end walls 11 of the housing H. The shaft 75 carries a crank arm'7 9 preferably rightangular in configuration, the free end of the arm being pivotally connected at 80 with a link 81, said link having its free end pivotally connected at 82 with the arm 88 of the cross-head 84, said cross-head being slidably mounted on the leg 42 in straps 85. A bell crank lever 86 is pivotally mounted at 87 on the cross-head 84, the shorter arm of the bell crank lever being adapted to engage a pin 88, attimes, for a purpose which will hereinafter appear. The upper free end of the bell crank lever is. provided with a pin 89 'engageable, at times, in the recess 90, formed in the lower free end of the lever 37. A

loop 91 riveted or otherwise secured to the leg 42 embraces the longer arm of the bell crank lever 86 to limit the movement of the same. 1

A block 95 adjustably held by a set screw 96 is mounted upon the curved guiding frame 40 to limitthe movement of the lever 37 and hence limit the length to which the filmand paper are moved.

ln use a movement of the lever 37will im= part motion to the rollers 26 and 27 causing the film and sensitized paper to be drawn over the face of the transparent top of the housing H. The sensitized paper, after besee.

ing printed, is drawn over the strip 64 to lower free end of the said lever causing a vertical reciprocation of the cross-head 84 which in'turn causes oscillation of the shaft 75. This movement in turn causes the cam 76 to engage the knife blade, moving the same downwardly to sever the paper. If it is desired to make a plurality of prints of one section of the film, the inion 35 is shifted out of engagement wit the pinion driving the film rollers leaving said rollers at rest while the rollers 27 move the sensi tized paper over the film on each printing crank lever 86 will'cause the long arm of said lever to be moved outwardly on the pivot into the path of movement of the lever 37 so that when said lever is again oscillated said long arm will be engaged thereby. The nut 52 on the bolt 51 serves to engage the arm formed on the crank shaft 48 to bring the presser member 45 into engagement with the film and sensitized paper during a printing operation. This action also moves the arm 56 into engagement with the pin 60 closing the circuit to the light source.

From an inspection of Fig. 4 it will be seen terially increased. If desired, the rollers 26 and 27 may be made of rubber or may be yieldably mounted in order to vary under different thicknesses of paper used. 7

From the above description taken in connection with the accompanying drawing, it is thought that a clear and comprehensive understanding of theconstruction, operation and advantages of my invention may be had, and while I have shown and described the device as embodying a specific structure, I desire that it be understood that such changes may be made in said structure as do not depart from the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a photographic printing machine, the combination of a housing having a transparent top, a presser member arranged above said top for bringing the paper and film into relative proximity and into proximity with said top, means associated there- With for feeding the paper and film including a lever, feeding rollers, said lever actuating said rollers.

2. In a photographic printing machine, the combination of a housing having a transparent top to receive a film and paper,

a presser member for bringing the paper and film into relative proximity and into proximity with said top, means associated therewith to control a light source, a lever, feeding rollers, said lever actuating said feeding rollers.

In testimony whereof, I aflix my signature hereto.

ISAAC P. BARROWS.

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