US1154735A - Photographic-printing apparatus. - Google Patents

Description

S. A. SMITH.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION, FILED NOV. 23. 1914.

1,154,735. Patentedse t. 28, 1915.

3 SHEETS-SHEET l. 5% 2O S. A. SMITH.

PHOTOGRAFHIC PRINTING APPARATUS.

APPLICATION FILED NOV. 23. 1914-.

1,154,735. Patented Sept. 28, 1915.

3 SHEETS-SHEET 2.

M-M- @w' A s. A. SMITH. PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED NOV. 23,1914.

1,154,735. PatentedSept. 28, 1915.

3 SHEETS-SHEET 3.

20 I IIEII/h 4 MmIIIIIIII IIIT 27 flfi" v Snoahtoz SIMON 9- SMITH SIMON A. SMITH, OF BURLINGTON, VERMONT.

PHOTOGRAPHIC-PRINTING- APPARATUS.

Specification of Letters Patent.

Patented Sept. .28, 1915.

Application filed November 23, 1914. Serial No. 873,545.

and useful Improvements in Photographic Printing Apparatus, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to the art of photography, and particularly to means for'print- 1n from photographic negatives.

he primary object of my invention is the provision .of a printing frame adapted to carry a plurality 'of negatives, and adapted to expose the photographic paper to theaction of light for a predetermined and regulatable time.

A further object of the invention is the provision of a photographic printing apparatus in which a plurality of negatives may be supported for the production of a-plurality of photographs, the frame being so arranged that while the sheet of sensitized paper is being removed, another sheet may be inserted and a plurality of sheets may be coincidently exposed to the light.

Afurther object of the invention is to provide a rotatable printing frame having means for supporting a plurality of negatives and sensitized sheets, these negatives being arranged so that at one period of rotation the back of each printing frame will be opened, allowing the removal of the ex- \posed paper, during which period the lights within this particular frame are turnedoff, and during another period the back of each frame vwill be opened so as to permit the insertion of a fresh sheet in that particular frame, during which period a red light will be energized, and during the remainder of the rotation the plate and sensitized paper will be subjected to the action of electric light whereby to cause the printing of the negative upon the sensitized paper.

A further object is to provide in a device of this'character a drum carrying a plurality of printing frames and divided into compartments coincident with these frames and provide means for illuminatingthe interior of each one of the compartments or cutting off this illumination, and provide means for giving a step by step rotation to-the drum.

Stlll another oh ectis to provide means for automatically exposing the sensitized paper to light for a greater or less time, as may be desired.

A still further object is to so construct the back of each of the frames that the back will be automatically opened as the frame arrives at a predetermined position, so as to permit the removal of the sensitized paper and the insertion of a fresh sheet and further provide means for reducing the shock or jar incident to the opening of the back.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure 1 is a side elevation of a printing apparatus constructed in accordance with my invention; Fig. 2 is a vertical section on the line 22 ofFig. 1; Fig. 3-is a perspective view of the device; Fig. 4 is a diagrammatic view showing the wiring and light timing devices coacting therewith; Fig. 5 is a detail view of the pawl and ratchet feed to secure a step by step motion of the drum; Fig. 6 is a face view of the timing disk or plate.

Corresponding and like parts are referred to in the following description and designated in all parts of the accompanying drawperiod of ings by like reference numerals.

Referringto these drawings, and particularly to Figs. 1, 2 and 3, it will be seen that I provide a drum or carrier 2 which is formed with opposed spaced end portions 3 and 4. These-end portions are mounted upon a barrel 5 which is rotatable upon a shaft 6. This shaft 6 is mounted in any suitable manner upon a frame designated generally 7, this frame having supporting legs, or being arranged in any desired manner. The drum is'rotatable upon the shaft and the shaft is adapted to be driven in any suitable manner, as by means of a worm.

gear 8 and a worm 9. This worm 9 is mounted upon a shaft 10 supported in the frame work which carries at its ends the band wheel 11 whereby power may be applied to the shaft. It will of course be obvious that a rotation of the shaft 10 will cause a continuous rotation of the shaft 6 rotation'of the drum in a revers dlrection to that of the shaft. This mechanism will be later described.

The drum or carrier 2 is provided, as illustrated in Fig. 1, with a plurality of compartments, each of these compartments being triangular in form and having the radially directed side Walls 12. These side Walls 12 are preferably formed of highly polished metal, the polished surface of the metal acting as a reflector. I do not wish to be limited, however, to the use of metal in the side walls, as mirrors might be used forthe purpose. The outer end of each compartment is preferably provided with means for supporting therein the photographic negative 13, so that this negative may be readily removed and as readily inserted in place in the printing frame formed by the side walls 3 and the reflecting end walls 12.

As illustrated, the drum 2 is hexagonal in form so as to providesix printing compartments, or frames, designated respec tively a, b, 0, d, e and f, (see Fig. 4). Each compartment is formed with a back designated generally 14 which comprises an exteriorly rectangular frame designated 15, which frame is hinged at 16 to a strip 16 extending across between the walls 3 and 4 of the drum. This frame 15 is held .in

closed position by means of hooks or other forms of latches, and the frame 15 is only opened to permit the insertion or removal of the negative 13. Extending across this frame 15 are a plurality of back sections 17, illustrated as four in number, and hinged to each other, one of the end sections being hinged to the frame 15, as at 18. As before stated, these sections 17 are hinged to each other, and two of the sections carry upwardly extending U-shaped straps 19 extending in transverse alinement. Pivotally mounted upon the side wall 3 of the drum at the middle of each back section 14.

is a transvers ly extending bar 20 which passes through these U-shaped straps 19 and has slidingengagement in these straps, as illustrated clearly .in Figs. 2 and 3. Ex-

connected with this finger 21 is a coiled contractile spring 22, the outer end of which is connected to. the outermost section 17,. as shown clearly in Fig. 2. I The bar 20 extends beyond the side Wall 4 of the drum and is adapted to be engaged and held in locked position by means of a latch 23. There are of course as many latches 23 as there are bar 20, and these latches are mounted upon the side wall 10f the drum. The latches are held in position to engage over the ends of their respective bars 20 by means of springs 25, i't'being obvious of course that the latches may be shifted so as to disengage the bars 20 and that when so disengaged the spring 22 associated with any particular bar 20 will cause the opening of the door or back. These latches are automatically shifted from engagement with the bars at a particular point in the rotation of the drum. As illustrated in Fig. 3, a pin 26 is provided which projects from the frame and is adapted to engage each latch as it comes in contact with the pin, withdrawing the latch from its engagement with the corresponding bar 20 and causing the corresponding back to open. The opening of each back ispreferably at a point where the negative in that particular frame or compartment is inclined to a vertical plane so that the printed sheet within the compartment may readily slide out of the compartment and drop into a box 27 intended for the reception of these sheets. The back of the compartment remains open until the drum isturned one step, carrying the proper compartment into a horizontal plane, as illustrated in Fig. 3, and a new sheet of sensitized paper is inserted in this compartment and the back closed by hand, the proper catch snapping over the bar 20 of the back. The back then remains closed throughout the further rotation of the drum until it again arrives at the unlatching device 26.

For the purpose of giving the drum a step by step rotation, I might provide any suitable mechanism, but preferably I mount upon one end of the shaft 6 a crank 28. I pivot upon the frame the lever 29, one end of which is connected to the crank by means of a link 30 and the other end of which is connected to a lever 31 by means of a link 32. This lever 31 is pivoted upon the shaft Or axis of the drum and carries a pawl 33 engageable with the ratchet wheel 34; which rotates freely upon the shaft 6 but is fixed to the drum. It will thus be obvious that each rotation of the shaft will cause an oscillation of the pawl carrying the lever 31, which in turn will cause a predetermined movement of the drum,-the extent of this angular movement being such that each oscillation of the lever 29 will cause one step of the drum. In order to prevent any reverse movement of the drum and hold it steady at the end of each rotation or step, I provide the pawl 35 which is pivoted in one end and which at its free end carries a tooth engaging the ratchet teeth on the ratchet wheel 34. This pawl is held in close contact with the ratchet wheel by means of a spring 36.

As before stated, I do not wish to be limited to the exact construction herein shown, as it is obvious that many changes might be'made in this mechanism without departing from the spirit of the invention.

It is necessary that the photographic negative and the sensitized paper be sub- "mitted to lightfor a predetermined time, and. that then the back 14 shall be opened to permit the discharge of the printing sheet and that at this timethe white lights previously burning shall be turned out. It is also obvious that at the time the new sheet of sensitized paper is to be inserted, a red light should burn within the proper compartmentv of the drum so as to give out illumination whereby the operator may see to placing paper on the negative without any danger of exposing the sensitized sheet to the light before it is in'proper position with the back closed..,/To this end I provide in each compartment a plurality of solseveral compartments.

lamps. Preferably I provide two electric I lamps, designated 37 which are white in color and preferably -disposed...at the ends of the'compartments, and I provide at the: 9 middle of each compartment a red lamp 38.

Mounted upon the frame of the machine and insulated therefrom is'a copper contact plate 39 which is shown in the 'face view in Fig. 6. This copper contact sheet or 5 plate is fixed with relation to the drum.

This sheet has an arcuate portion 40 which of a circle as at 41,.-to provide a'portion 42 r disposed nearer to the center of motion than the portion 40. Theplate 40 is then )5 further cut away as at 43 to provide an.arcu-' ateportion which is still nearer to the cenfter of rotation. The plate is still further cut away rearward of the portion 43 to prov1de a portion 44 on a line within the por- 40 tion 43, 'and is still further cut away to provide a portion 45 which is still nearer the. axis of rotation. It; will be noted'from F ig 6 that the portion 45 has an angular exten .of approximately 240 degrees, and the por- 46. tion 44 has an angular extent of approxi- As illustrated in Figs. 2'and 4, the wire -mately. 180 degrees; the portion 43 has an angular extent of approximately 110 degree's, and the portion 42 has an angular extent of approximately .55 degrees.

46 leadingfrom one side of. each electric light 38 connectsit to a binding post operatively connected to a brush or pin 47 which n is so disposed upon thefdrum that in its rotation it will wipe against the face of the portion 40 of the plate 39. During the is wiping against this portion 40 of the plate the lamp 38 of thatcompartment willbe en- 6 ergized and-the compartment will be illuminated by a red light. There are of course as many of these pins or brushes 47 as there are compartments, and whenany' pin passes out. of contact with the portion 4Q of the 65 plate 39 .the corresponding red lamp will go out. Inasmuch asthis, portion 40 of the plate 39 is arranged above the shaft\ 6, it is obvious that a compartment will be illuminated with a red light when it reaches its uppermost position. Thus in Fig. 4, the

compartment 6 is being illuminated with the red-light.

I The. white lights 37 are shown as connected in series, and the-wire 48 leading from each pair of whitelights connects to a post or brush 49 which is adapted to also contact with the plate 39, but inwardof the portion a 40 thereof] In order to secure an adjustable regulation and control of the time during which the white lights are displayed I- preferably so mount these brushes or posts 49 that they may be shifted inward or outward radially from the axial center of the portion. so that the-brushes will wipe against any one of the portions 42, 43 or 45. It

will be obvious that if'any one of these posts or brushes wipes against the portion 45' the white lights will be energized during a rotation of the drum through 240 degrees, and that if the post or wiper be so disposed as to contact with .the portion 44 thenthewhite light will be "illuminated during the rotation of the drum through 180 degrees, and

so on. Thus when the brushes are so adupper end of which is provided with a plurality of perforations .51 through anyone vious that by adjusting the rods inward or outward toward the frame or shaft 6, the brushes or posts 49' carriedthereby willbe adjusted either to contact with the segment 42, the. segment 43, the segment 44 or the segment 45. It will of course be understood that the'contact plate 39 is electrically connected to asource of current, asfor instance by the wire 51 in Fig. 4, and that the wires 40 and 48 are connected at one end to the re-' spective posts 47 and 49 and atitheir other ends connected to said source of current in any suitable manner, as by the wire 52.

The operation of my invention will be 106 of which.a bolt 52 passes. I It will be ob-' plain from the preceding description, and 1 I period when the. pin 47 of any compartment it will be 'bbserved" that I provided a printing device including a plurality of printing compartments .or frames arranged in a barrel rgtatable around a common axis by a step by stepmotion, and

that. I have provided means for automatically opening the back ofeach compartment of said Compartment and then turning on a red light in that compartment as it moves- :to a further predetermined point where a fresh piece of sensitized paper is to be inserted, and then deen'ergizing the red light and energizing the white lights composed in this same compartment and keeping said lights energized while the compartment is rotated to its initial position.

I have found my construction extremely convenient in practice, and forming a relastep motion given to the barrelgives to the tively' large output of prints The step by operator ample time to insert and remove the various sheets of paper to be printed. a

It will of course be obvious that I may I provide any suitable clutch mechanism if desired, but these negatives may be whereby the machine may be disengaged from its driving mechanism so as to permit the negatives within the frame to be changed a negative and a sensitized sheet, means mounted w1th1n the carrier for automat its travel.

{cally subjecting the negative and sheet to the action of actinic light during a predetermined portion of the movement of the carrier, and means for illuminating the negative and sheet by a non-actinic light during a further portion of the movement of the carrier. I

2. In a photographic printing apparatus of the character described, a carrier movable in a closed path, means mountedupon the carrier for supporting a negative and a sensitized sheet therein, means for automatically subjecting the negative and sensitized sheet to the action of actinic light duing a portion of the movement of the/carrier, means for automatically illuminating the negative and sensitized sheet with non-actinic light during a portion of the movement bf the carrier, and means for automatically opening said closing means when the negative and the sheet are illuminated by a nonactinic light.

3.. In photographic printing apparatus of the character described, a printing frame,

means for carrying said frame bodily along a predetermined path, means carried with the printing frame for automatically illuminating the printing frame with a white light during a portion of its travelsand means for illuminating the printing frame with a red light during another portion of 4. In photographic printing apparatus of the character described, a rotatable carrier divided into a plurality of compartments, a printing frameforming the end of each of said compartments, illuminating means carried by each compartment, means for termined angular rotation of the carrier, and means for energizing the red lamps during another predetermined part of the rotation of the carrier.

6. In photographic printing apparatus of the character described, a rotatable carrier divided into a plurality of compartments, a printing frame forming the outerend of each compartment, a back foreach compartment. hingedly connected to the carrier and co-acting with the corresponding printing'frame,a whitelamp and red lamp disposed in each compartment, means for holding the back of each compartment closed during a predetermined portion of the rotation of the carrier, means for ener 'zing the white lamp in each compartment w ile the back is closed, and means for automatically opening the back at a predetermined point in the rotation of the carrier and simultaneously denergizing the white light and energizing the red light.

7. In photographic printing apparatus of the character described, a rotatable drum divided into a plurality of .compartments,

the walls of said compartments having reflecting surfaces, a printing'frame forming the outer end of each compartment and hinged to a drum, a back hinged to said printing frame, means normally urging they back to an open position, a latch for each back holding it in closed position, means for automatically releasing the back at a predetermined point in the rotation of the drum to permit it to open, and means for illuminating each compartment Witha white, light while the back of that compartmentis closed; 5

8. In photographic printing apparatus of the character described, a rotatable drum divided intoa plurality of-printing com-' partments, each of said compartments at its outer end being constructedto support a a negative, a back for each compartment adapted to extend behind the negative but having position, alatch holding each back closed, electric lamps in each compartment, means for deenergizing the lamps in any one compartment while' the back of that compartment is closed, and means for automatically releasing the back of any compartment hen it arrives at a predetermined posltlon.

9. In photographic prmtmg apparatus of means urging the back to an open' the character described, including a.rotatable drum divided into a plurality of compartments, each of said compartments being 4 formed at its outer end to support a negative time the energizing of said lamps.

electric lights disposed in each compartment 7 and connected on one side to a source 'ofenergy, a brush forfeach'compartment disposed upon the exterior of the drum and connected each to its corresponding lamps, brushes being adjustable radially toward or away from the center of motion of the drum, a contact plate disposed concentric to the axis of the drum and with which said brushes contact, said plate being connected in circuit with the source of energy, said plate being formed with a plurality of arcuate tracks of different lengths whereby to 11. A photographic printing apparatus of A the character described, a rotatable drum divided into a plurality of compartments, each compartment being formed at its outer end to support a negative, a white lamp in each compartment connected on one side to a source of energy, a'red lamp in each compartment connected on one side to the source of energy, a brush for each compartment mounted upon the drum and to which the other side of the red lamp is connected, a brush for each compartment mounted upon the drum and to which the other side of the White lamp is connected, a contact plate concentric to the axis of rotation of the drum, havlng an arcuate 'portion or track with which the brushes of the, red lamps, successively contact, and having an arcuate-port1on or track with which the brushes of the whitelamps successively contact, said plate of energy, and means for of the character described, a drum divided into a plurality of printing compartments, a

back for each compartment composed of a plurality of hinged sections, a bar hinged said,

to one of said sections and extending across the other sections and operatively connected thereto, latches mounted upon the drum, one for each of said bars, and engaged therewith to hold the back closed, and means for successively releasing said latches.

13. In a photographic printing apparatus of the character described, a rotatable drum divided into a plurality of printing compartments, a back for each compartment comprising a plurality of sections hinged to each other and one of said sections being hinged to the side wall of said compartment, a bar extending transversely across the several sections and hinged to the wall of the compartment, U-shaped members attached to the sections and extending over said bar and permitting the bar to have a predetermined movement independent of the sections, a spring urging the free end of the bar outward, a plurality of latches mounted upon'the drum, one for each bar, and engaging the bar to hold the corresponding back closed, and means for successively releasing said latches to permit the opening of the back; g,

14. In photographic printing apparatus of the character described, a rotatable drum divided into 'a plurality of printing compartments, means for supporting negatives and sensitized paper within said compartments, a shaft passing through the drum, a ratchet wheel carried by the drum, means for rotating the shaft continuously in one direction and means carried by the shaft and operatively engaging the ratchet wheel to cause a step by step rotation of the drum upon a continuous rotation of the shaft.

15. In photographic printing apparatus of the character described, a drum divided into a plurality of printing compartments and adapted to support a negative in the outer end of each compartment,-a rectangular frame disposed in'th'e outer end of each compartment and hinged to one "of the end Walls thereof for movement in a plane parallel to the plane of rotationof the drum, a back hinged to said rectangular frame for movement at right angles thereto, means for latching said back in closed position, and means for releasing the latching means at a predetermined point in the rotation of the drum.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

' SIMON A. SMITH. Witnesses:

VAN A. NYE, N. K. BROWN.

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