US1510715A - Photographic-printing machine - Google Patents

Description

Oct. 7, 1924. 1,510,715

R. l.. srlNcHr-IELD PHOTOGRAPHIC PRINTING MACHINE Filed April 14 1923 2 Sheets-Sheet l 'l |NvENToR 75 ATTORNEY Oct. '7 1924. 1,510,715

R. l.. s-rlNcHFlELD PHOTOGRAPHIC PRINTING- MACHINE Filed April 14, 1923 2 Sheets-Sheet 2 El 5 f BYv ATTORNEY Patented Oct. 7, 1924.

UNITED STATI-:s PATENT oFFlcr..

RAY L. STINCHFIELD, OF ROCHESTER, NEW YORK, ASSIGNOB TO EASTIAN KODAK COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

. PHOTOGRAPHIC-PRINTING MACHINE.

Application led April 14,

. To all whom it may concern.:

Be it known that I, RAY L. SIHNGHFIELD, a citizen of the United States of America, residin at Rochester, in the county of Monroe an State of New York, have invented certain new and useful Improvements in Photographic-Printing Machines, of which the following is a full, clear, and exact specification.

This invention relates to photography and more particularly to photographic printing machines. It has for its object to provide a mechanically driven machine in which the platen movements are manually controlled; to provide such a machine operated from a constantly rotating source of power, from which the platen is moved through a definite cycle of movements by temporary connections with the power source; to provide a machine in which the power transmission mechanism is controlled by a manually actuated lever; to provide a means for. automatically releasing the driving connections, after the platen is moved a definite distance; and other ob'ects will appear from the following speci cation, the novell features being pointed out in the claims at the end thereof. l

In the drawings, wherein like reference characters denote like parts throughout:

Fig. 1 is a section through a printing machine, constructed in accordance with and illustrating one embodiment of my invention;

Fig. 2 is a wiring diagram therefor;

Fig. 3 is a fragmentary section on line 3-3- of Fig. 4, showing drive illustrating another'form of my invention;

Fig. 4 is a section through the second type of clutch;

Fig. 5 is a section through certain parts of a printer constructed in accordance with the second embodiment of my invention;

Fig. 6 is still another embodiment of my invention, showing parts of a printer in section;

Fig. 7 is a part section and elevation of certaln parts of the printer shown in Fig. 6;]ind nl d ragm I d t 1l i 8 is an e arge entary e a' of prts of the platen levers, shaft and springs. l

In Fig. 1 the printer is illustrated as consisting of a cabinet 1 having a slanting top 2, in which ,there is mounted a glass print- Aa second slotted bearing 22 1923. Serial No. 632,148.

ing panel 3. Beneath this panel there is a reflector 4 carryin a printlng lamp 5 and a pilot lamp 6. e former lamp is controlled by a switch 7 normally held open by a spring8 (Fig. 2*) but which is compressed to light the printing lamp by a portion 9 of the platen 10. Set screw 11 allows for necessary timing adjustment, as the lamp must not light before the presser board 12 of the platen.y 10 is in firm contact with panel 3. Springs 13 surrounding the limiting screws 14 press board 12 from the platen plate 10.

As shown in Fig. 2, lamp 6 is connected to wires 15 and 16 which come from the power wires 17 and 18. .A switch 19 permits the power to be cut oli' from the main line, thus stopping motor 20 and extinguishing lamp 6. Lamp 5, however, is also controlled by the spring switch 7.

Platen plate 10 carries a main bearing 20 for a pin 21 from which the platen hangs," guiding the platen by means of pin 23. Pins 21 and 23 Y are carried by lever 24 fulcrumed at 25 to a bracket 26, and extending rearwardly therefrom, beingpivoted at 27 to a link 28 operated by pin 29 on ture forms a walking beam which is operated to raise orlower the platen by the following mechanism.

gear 30. This struc- Gear 30 is mutilated at 31 and 32 where the teeth are cut of. This gear carries two pins, 33 and 34, which are adapted to move through the path shown in dashed lines in which course they will strike one of the lugs 35 or 36 on lever 37 pivoted at38 to the casing and at 39 to a push button rod 40. In the position shown 1n Fig. 1 push button 41 is depressed holding lever 37 against the pull of spring 42. The tension on this spring may be adjusted by the nut 43. The opening 44 between lugs 35 or 36 is just sufficient 1n width to permit pins 33 and 34 to pass through when the lever is in an intermediate position between the stop pins 45 and 46. Thus lug 35 or 36 will always lie in the path of the pins when the lever is at rest in either extent of its movement. A latch 47 pressed by spring 48 engages one of the pins and holds gear 30 against a reverse movement.

Grear 49 driven by pinion 50 of the motor shaft 51 is continuously rotated. To lower platen, push button 41 is depressed releasing pin 33 to pass through opening 44,

being moved through the impulse of springs 13 pressing upwardly on the walking beam and exerting a force downwardly on link 28. This throws a gear segment 52 in mesh with gear 49 and the parts move until pin 33 is latched by member 47, at which time the mutilated section 31 lies above gear 49. At the same time pin 34 is held by lug 36 against further movement. By releasing pressure on button 41, this operation is repeated, except that the parts will stop with the-platen raised, and, instead of having the compression springs 13 start the mutilated gear into mesh with gear 49, the weight of the hanging platen forms the starting imnlse. l P 1t is, therefore, inthis form only necessary to press the button down to lower the platen, and torelea'se the button to raise it. The duration of the exposure is controlled manually by the operator and the work of moving theU parts is accomplished by a motor through mechanical transmission, by which l mean a system of machine elements such as levers, links, cams, gears, clutches, etc., in contradistinction to systems in which the power is transmitted electrically along wires, or by fluid pressure through pipes. en the terni manual is used in this specifi-l cation, and inthe claims ll mean a force applied by any part of the operators body, or under voluntary control, by the operator.

A second embodiment of my invention using a cam in'place of a crank is shown in Figs. 3 to 5. The difference from `the .first machine lies solely in the mechanism which operates the platen lever 24 which in this latter case is moved by a link 60 pivoted at 61 to a rod 62 slidable in bearing 63 being moved by roller 64 which runs in the cam slot 65 of cam wheel 66.

Referring to the clutch member illustrated in Figs. 3 and 4: wheel 66 carries a hub 67 and a hexagonal head 68, and rotates freely upon shaft 69, being positioned by a collar 70. Pinion 71 driven by motor 72 turns gear 73 which is affixed to shaft 69 and carries a raceway flange 74. Balls 75 may lie against this flange, being spaced by a notcned flange 76 carried by disk 77. Disk 77 turns upon flange 76 which slides inside of flange 74, and is held in position by hub 67. There are two teeth 78 on the periphery alternately engaged by the double hook stop 79 having an arm 79 held by spring 80 in the position shown in dashed lines in Fig. 5 and being movable therefrom by the knob 81 into the position shown in full lines, same figure. A pin 82 carried by wheel 66 enters an opening 83 in disk 77 and lies against a spring 84 which tends to turn the notched flange 76 until the balls 75 impinge upon the hexagonal head 68 and flange 74 thus forming'ladriving connection which is broken by stopping disk 77. Thus one hook of stop andere 79 may engage a tooth 78 holding the balls in an inoperative position in which the cam is not driven. Each time a tooth is released the platen will be raised or lowered, so that knob may be pressed down to lower the platen and released to raise it, the mechanical power being automatically released at the end of a cycle of movement, when a tooth 78 is caught by one of the hooks 79.

In Figs. 6 to 8 l have shown another embodiment of my invention wherein the platen is raised by spring pressure and is lowered by a cam against the action of this pressure. As the printing cabinet 1 is substantially the same as that shown in Fig. 1, and as parts of the mechanism are the same as parte of the other figures, the same reference characters will be used for similar elements.

The platen 10, carried by arms 24 pivoted to brackets 26 by shaft 25, differs from the form shown in the revious figures in-that coiled springs 100 ig. 8) constantly tend to raise the platen from panel 3. One of the arms 25 is pivoted at 27 to a link 60, which in turn is pivoted at 61 to an arm 62 terminating in a roller 64 and slidable through a bearing 63. In the present instance roller 64 contacts with the cam periphery 101. of disk 66. This cam has two sharp `declines 102 and 103 (toward the cam shaft 104) connected by a concentric portion 105 and an outwardly flaring curved portion 106. The cam disk 66 is keyed to shaft 104, upon which mutilated, gear 30 is keyed; gear 30 being of the same construction as that shown in Fig. 1, as also is gear 49, pinion 50, shaft 51 and motor 20.

The action of cam 101 is as follows: Roller 64, Fig. 6, is on a sharp decline 102 when the platen is in inoperative position. Control lever 37 differs from that shown in Fig. 1 in that lugs 107 and 108, which are arranged offset from each other by the width of a pin 33 or 34. As pin 33 is held by lug 107, the parts remain stationary while the gear 49 rotates. By depressing button 41 gear 30 is permitted to move until pin 33 strikes lug 108, as in Fig. 7, the moving impulse being caused by springs 100 pressing downwardly upon roller 64 upon the incline 102. Releasing button 41 causes lever 37 to return to its first position releasing pin 33, and a further pressure by springs 100 upon roller 64 throws gear segment 52 into mesh with gear 49, thus turning shaft 104 and cam disk 66, causing roller 64 to ride up incline 106, thus lowering platen 10 to dashed line position in Fig. 6, when gear 30 will be stopped by pin 34 striking lug 107. A second actuation of knob 41 repeats this movement, except-ing that as roller 64 comes to the decline 103 the necessary starting impulse is obtained for wheel 30 and springs 100 may return platen 10 to its full line position in Fig. 6, in which position roller 64 rides around the concentric surface 105, and starts over the edge of the incline 102.

With this last form the ofperator depresses button 41 once to lower p e platen, after which it remains in contact with panel 3 until a second depression causes the platen to raise. This operation is useful for work requirin prolonged exposures.

I pre er to add a dashpot havinga plun r 111 raised norma ly by spring 112 whic is struck by an extension 113 of one arm 24, thus cushioning the end of the stroke of the arm under the im ulse of springs 100. Having thus describedp my invention, what I claim as new and desire to secure by Letters Patent is:

1. A photographic printing machine, comprising a printing panel, a laten movable into printing position on sai panel and removable to clearance position, a continually rotating power element, a transmission system adapted to be connected to said element and receive a definite movementeach time it is thus connected, said system being connected to said platen to move the latter to printing position during one of said definite movements and to permit its removal to clearance position during a subsequent definite movement, a control member the actuations of which are manually governed, and a device which efects connection between said system and power element when said control member is actuated.

2. A photographic printing machine, comprising a printing panel, a laten movable into rinting position on sai panel and remova le to clearance position, a continually rotating power element, a transmission s stem ada ted to be connected to and dyisconnect from said power element, said system bein connected to said platen to move said p aten to printing position, and permit its removal to clearance position, a control member, the actuations of which are I manually governed, and a device which governs the connecting of said transmission system to said power element to move said platen to printing position upon manual actuation of said control member, and to permit removal of said platen to clearance position upon further actuation of said member, said platen remaining in printing position between said actuations.

3. A photographic printing machine comprising a printing panel, a platen movable into printmg positlon on said panel and removable to clearance position, means, including a continually rotating power element and a mechanical power transmission between said element and platen, for moving said platen to printing position, holding it in such position, an removing it to clearance position, a control member, the actuations of which are manually governed,

`prising a chanical transmission including a clutch S0 member, a control member, means for governing the control member manually, said means being normally positioned to hold the clutch member in a position in which the motor drive is disconnected from the platen, but being capable of manual actuation whereby the platen will be moved by the motor through the clutch.

5. A photographic printing machine comprising a printing panel, a platen movable into printing position on said panel and removableto clearance position, a motor drive, av mechanical transmission between the motor drive and the movable platen, the mechanical transmission including a clutch member, a control member, means for governing the control member manually, said means being capable of movement between two positions in either of which the motor drive will be disconnected from the platen 100 through the clutch, the clutch being actuated to connect the platen to the drive when the manual control member is in a position between the two above mentioned positions.

6. A photographic printing machine comprising a printing panel, a platen movable into printing position on said panel and removable to clearance position, a motor drive, a mechanical transmlssion between the mo- 110 tor drive and the movable platen, the mechanical transmission including a clutch member, a control member, means :for governing the control member manually, means for normally causing the control member to disconnect the motor drive from the platen through the clutch, and means, actuated by the control member fior causing the clutch member to connect the motor and platen for moving the latter a definite distance.

7. A photographic printing machine comprising a printing panel, a platen movable into printing position on said panel and removable to clearance position, a motor drive, a mechanical transmission between the motor drive and the movable platen including a rotatable member, connections between the rotatable member and the platen, a clutch between a motor drive and the rotatable member, a clutch control member movable to and from operative positions in which the clutch connects the motor and the rotatable member, means including the control member for retaining the clutch in an inoperative position, and. a manually controlled means for moving the control member to an operative position between the inoperative positions.

8. A photographic printing machine comprising a printing panel, a platen movable into a printing position on said panel, and lremova movement being a definite distance comprising a cycle of movement, a motor drive, a mechanical transmission between the motor drive and the movable platen including a rotatable member, means for normally holding the rotatable member against movement, means for driving the rotatable member by the motor for a definite distance, means forle to a clearance position, either Lamme automatically stopping the movement of the rotatable member after the cycle oli movement is complete, and manually controlled means for releasing the stopping means 9. ln a photographic power-driven printing machine, a printing panel, a platen movable into printing position on said panel, a continually rotating power element, a transmission system connected to said platen to force the latter to printing position, a con trol member the actuations of which are manually governed, means for connecting said system and power element upon actuation of said control member, and means for automatically disconnecting said system and power element when the platen reaches its printing position.

Signed at Rochester, New York this 12th day of April, 1923.

RAY L. STINCHFIELD.

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