US917078A - Photographic-film-developing apparatus. - Google Patents

Description

R. KROEDEL. PHOTOGRAPHIG. FILM DEVELOPING APPARATUS.

(APPLICATION FILED NOV. 3, 190a.

- Patented Apr. 6, 1909.

2 SHEETS-SHEET 1.

R. KROBDEL. PHOTOGRAPHIG FILM DEVELOPING ABPARATUS.

APPLICATION FILED NOV. 3, 1906. n

Patenteu Apr. 6, 1909.

2 SHEETS-SHEET 2.

swentoz 31% means v no; 917,078.,

UNI E s'rArEs PATENT oFFroE.

ROBERT KROEDEL, OF ROCHESTER, NEW YORK, ASSIGNOR TO EASTMAN KODAK COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION NEW YORK.

rno'roenAPHIc-rILM-nr:vnLoPnvG APPARATUS,

graphic Film-Developing Apparatus; and I.

ereby declare the following to be. a full, clear, and exact description of the same, reference-being had to the accompanying drawings, forming a part of the specification, and .to the-reference-numerals marked thereon.

My present invention relates to apparatus for developing or-otherwise treating strips of sensitized photographic film, the entire process taking place within a container from which light, or "the actinic rays thereof, is excluded, whereby the use of a dark room becomes unnecessary, and it has for its object to provide a simple, cheap and convenient device of this nature by the use of which, film wound upon a spool 'orother contrivance may be unrolled without danger of injury and exposed to the developing washing or fixing solutions or other liquids. To these and other ends the invention consists in certainimprovements and combinations of parts all as will be hereinafter more fully explained, the novel features being pointed-out in the claims at the end of the specification.

In the drawingszFigure 1 is a side elevation of a developing machine constructed in accordance with my invention. Fig. 2 is a central, longitudinal, vertical section thereof with the cover removed. showing a film roll or cartridge inserted ready to be unrolled and developed. Fig. 3 is top plan view of the interior of the container with the parts in the same position as in Fig. 2. Fig. 4 is a central, longitudinal, vertical section with the cartridge inserted and par H Fig. 5 is a similar view with t tirely unrolled. 6 is a t section on the line 6---6 of Fi collective view showing the manner of attaching the cartridge tothe unwinding device, and Fig. 8 is a erspective View of the support upon which t e container is pivoted.

. Similar reference numeralsin' the several figures indicate similar parts. v

In a developing machine of the present type, it is desirable that, in unrolhng the j film, it be-laid upon its supports instead ofbeing drawn across them as in the latter case Specification 3: Letters Patent. Application filed November 3, 1906. Serial 1%. 341,900.

v Patented. April 6, 1909.

the moistened surfaces retard the move ments of the Iparts and the increased friction is a ,t to resu t ininjury to the delicate structur of the film To accomplish this operationl and at the same time dispense withsuch' para hernalia' as the spacing apron wh ch is usua y employed .to separate the convolution's of film when the latter is wound u on a reel as a support whereby I materially essen the cost of production, I provide a containing vessel havmg'separated transverse suppo ts between which the film is. extended throngs suitable means by fastenin the free' end thereof and drawing the spoo or roll over the 7 supports and between them, whereby it is thoroughly exposed to-l the liquid in the con- 'tainer, aided preferably by oscillation of the latter.

trate an embodiment of the invention, 1

slightly greater than that of thecartrid-ge'ior the development of which the machine is adapted and of a lengthequal, preferably, to about half that of the strip of film when unrolled. 'The edges of the tray are prefr 1' Referring now to the drawingswhich illus ably rolled as at 2 toofi'er a .firm engage- 'ment for the cod crating portion of the cover 3, the rim or ead 4 of'which, when in place, extends well over the said edges as shown in section in Figs. 4 and 5, in order to insure a light tight joint. I vided with an aperture near one end fitted with a plug fithrough which the liquids are poured. For the pur oses'of rocking the re-v ceptacle it is )ivot-al y mounted at ornear The cover ispro.-

its center, an I provide a co venient sup-.-

port preferably constructed of a single piece of wire bent as shown in Fig. 8, to form the c side standardsfi connected by the per c if", and having their upper ends .bent to engage sockets 9 on the lower side 0. .I .t receptacle on which the lattermay he tilted. The connecting portion 7 ofthe support being located nearer one end of the receptacle than the other, and the side portions or legs being arranged at the sides of the receptacle and extended horizontally to rest on the table, the base maybe folded up against-the bottom for shipping purposes 'where desired, as shown indotted lines in Fig. 1

. 'At one end the receptacle is provided with;

a reel or other winding device iormedin the present instance the drum or roller 10 .l operated by a crank -ll. on the exterior. "1 circumferential groove 12 forms a central reduced portion to whiohis attached one end oi a flexible connector or cord 13, the groove being preferably of suilicient depth to allow the entire lei'igtli of cord .tobewound thereon without permitting the-outer convolutions to extend above'the plane of the surface of the roller for reasons that will later appear. The outerend oi the cord; is connected 130" a carrier for a coil or cartridge of film consisting'in the present instance oi" a yoke 14 having armsv provided with trunnions or pins 15 (Fig.7) between which the filin cartridge is adapted to be held, said-pins mitted a. limited movement in a vertical direction; This roller is also provided-with a centralgroove 18 while the ends are re duced as at 19-to accommodate the .l'langes of the film spool when the latter passes over it.

The ordinary film cartridge or roll usually embodies a flanged spool .20., (Fig. 7) having axial: apertures '21 in the ends thereof by means of which it is mounted for rotation in the camera, or roll. holder, and upon this spool is wound the strip-of film ZZ-together with an opaque backing or covering 23 i slightly greater length attachecl thereto .111

such manner that in. unrolling, the film will appear'on theinside or beneath the paper. Ihave, in the-present instance, illustrated the film in this fem-1- and my device as adapted thereto but the film could be readily accommodated when otherwise put up as, for instance, -the 'trunnions- 15 could be simply inserted in the. ends of a roll into which 'it might be wound without a core. -I The operation is'as follows: Referring now to Figs. 2 and 3,. the cord 13 is passed from .tl e .roller .10, over roller 16, thence back benath the rolle'rsandthe yoke on its end se cured'to the coil of film; or cartridge spool by means ofthe trunnions 15, the cartridge being free .to rotate and in the position shown being arranged against roller 10 with a portion of Container. The container is then tilted to elevate the end at which the film is positioned and a quantityof the, developing or other solution poured in. at the opposite or lower end where the capacity of the vessel is greater by reason of the presence of the roller 16 urnaled to extend transversely thereof only. The cover is applied and secured by means of the clips 27 and so much ofthe' backing 'drawnout by hand as will start the llIlWll'iLllllg, within the/receptacle, of the film itself, suitable indicia being preferably placed at such a point on the'backing as 'will'show when the outer convolution'or protecting covering of paper-has been unwound. l Vhile the cover is, in the present instance, utilized to secure the free end of the paper during the operation of they rnachine, it is also made loose enough to permit. slight movement of. the paper as .justjdescribedthou'gh without allowing the entrance of light, .or other means could be employed; to hold the end'of the paper, or it could be held bythe operator if desired. The crank 11 is then. turned, whereupon the cord 13' traveling. over. the roller 1 6 draws the flm spool with it unrolling the film as it goes. (hen the spool reaches the roller- 1'6 the latter yields upwardly (as shown in Fig, 4) through thepressureof the fianges'againstthe shoulder or'reduo'ed portion 19, until it has passed upon the upper .side, whereupon the roller drops back again to its former position. Bymounting the roller in this way it 18; made to support the la *ers of filmlower in the containirw vessel than would otherwise be possible in handling a cartridge of any size,-'and the amount of solution necessary to ysaturate it thoroughlyis thereby reduced. Continued motion of the crank completes the unwinding until the binding 'of'the yoke 14 upon.- the reel warns the operatorthat the circuithas been completed (Fig. 5), and the iilrn withdrawn and laid in the receptacle in position to he sub jected to the action of the fluid. The vessel is then oscillated upon the support shown in. Fig. 1 whereat the solution or liquid flows from end tp end was-hing thoroughly over the horizontal layers of film until the desired effect thereon "has been produced, after which the cover is removed, the yoke disengaged from the spool and. the latter together with the film withdrawn or else the liquid is drained out and replaoedwith other solutions.

By the means described, the strips are held in a. substantially extended position throughout, the film. being upon the outside .flJlCl-fI'COflOJD contact with any portion of the apparatus by which the delicate substances upon its surface could be disturbed, while the cost of manufacturing such a machine is comparatively slight and the amount of solu- 'tion necessary reduced to a minimum, inasmuch as the latter, bythe movement imparted to it, washes freely on both layers, though its level, when in a state of rest, be slightly below the upper one. It will be seen that in treating spools of film wherein the relative position otthe film-strip and backing are reversed, or in other instances, the operation may be reversed. or the spool the v .theinside against the rollers.

turned end for end, when inserted, to bring film uppn the outside and thepaper on,

naked film can be laid around a number of- --s-u-p orts Without liability of damage.- I

.' preer, however,

tamer of such length that only two layersare exposed as this reduces liability of having.

to make the tray or conthe sensitized surface of any hard substance.

I claim as my invention:'

1. In a developing apparatus, the comthe film contact with bination with a receptacle, "of asupport therein and means operable from the exterror of the receptacle for carrying a roll of film around the support.

2. In a developing apparatus, the combination with a receptacle, of a support therein, a roll carrier and-means operable from the exterior of the receptacle for moving the carrier around the support.

3. In a developing apparatus, the combination with a receptacle, of a support at one end thereof, a roll carrier and .means operable from the exterior of the receptacle for carrying the roll from one end of the c'asing around the support and back to the first mentioned end;--F";-

4. In a developing apparatus, the combination with a receptacle, of a support arranged at one end thereof, a roll carrier, and .a flexible connector attached to the said carrier and extending around said support.

5. In a developing apparatus, the combination with a rece tacle, of a support arranged at one end t iereof, a roll carrier, a flexible connector attachedto said .carrier and extending around said support and a winding drum arranged op osite the sup port to which the connector is attached.

6. In a developing a paratus, the combination'with a receptac e, a su )port at one end movable transversely of the length of i the latter, a winding drum arranged at the opposite end of thereceptacle, a flexible connector attached at one end to the drum and extendingaround the support and a roll car- 'rier'attached to one end of the connector.

"7. In a developing a paratiis, the combination with a receptac e, a support at one end thereof, a winding drum at the opposite end, means for operating said drum from the exterior of the receptacle, and a flexible eonnector attached to the drum and extending around said support.

;8 In a developing apparatus, the combination with an elongated receptacle, of a attached tot yielding support at one end, a." winding device at the o posite end,'a flexible connector he winding drum and extendin around thesupport and a roll carrier secured 1 to'the connector.

-9. In a developing apparatus, the con-1 bination withi an elongated receptacle, and a base upon which it is ivoted for rocking, of means arranged within the receptacle and operable from the exterior for extending film in two substantially horizontal stretches. 10. In a developing apparatus, the cornbination with a receptacle and film-supporting devices mountedtherein, of means for holding one end of the film against movement and a traveling member adapted to be connectedwith the roll for unwinding the film and extending it in a substantially flat position on the supporting devices. llfiIn a developing apparatus, the combin ation with a receptacle, of a winding device mounted therein operable from the exterior of the receptacle, a film support, means for securing one end ofthe fllm against mo vement and a flexibleconnecting member on the winding device-extending around the. support and ada ted to, be attached to the other end of the rilm strip.

v12. In a developing apparatus, the cornhination' with a receptacle, of a winding drum having a reduced portion mounted therein and operable from the exterior of the receptacle, a iilm support,'means for securing one end of the film against movement and a flexible member on the drum adapted to be -wound upon the reduced portion thereof and extending around the support and means for connecting said member with the other end of the Elm.

13. In a developing apparatus, the combination with'a receptacle, ofa film support and a winding device mountedftherein, the latter having a flexible connecting member attached thereto and extending around the support, means for securing the free end of the iilm and a yoke on the flexible member adapted-to engage the ends ofa ilm roll. 14(111 a developing apparatus, the combination with a receptacle and means for holding the end of a film against movement, of a film. supporting roller mounted in the receptacle and provided with reducedportions at either end andmeans for drawing a film spool around the latter to unwind the film therefrom.

15. In a developing apparatus, the combination with a receptacle and means for holding one end of a "film against movement, of a resiliently-mounted film support, and means for drawing a .zilm roll around the latter to unwind the film therefrom.

16. In a developing apparatus, the combination with a receptacle and means for holding oneend of a "film against movement,

of resilient arms, a revolublefilm support holding the free end of the film against move.

ment and means for advancing the spool to unwind the "film and'expose it to liquid in the receptacle.

18. In adeveloping apparatus, the coinbination with a receptacle provided with a filmsupport, of means for holding the free end of the -lilm against movement and means for advancing a roll of film over the support to unwind the film and lay it thereon.

19. In a developingapparatus, the 'com-- bination with a receptacle, of means for holding the free end of a film against movement and means pivotally connected to a film for advancing the latter to unwind the film and expose it to the liquid.

20. The combination with a rocking dc veloping receptacle, of a support embodying 21. The combination with a rocking developing receptacle provided with sockets at opposite sides of a support composed of asingle piece of 'material embodying side standards having inwardly extending ends pivoted in sockets, the horizontal base portions extending lengthwise of the latter upon both sides of the pivot and a connecting portion between corresponding ends of the ase portions permitting the standards to fold against the sides of the receptacle.

ROBERT KRQEDEL.

I Witnesses:

RUssELL B. GRIFFITH,

CLARENCE A. BATEMAN

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