US2349823A

US2349823A - Blueprint washing machine

Info

Publication number: US2349823A
Application number: US400057A
Authority: US
Inventors: Styles T Howard
Original assignee: Individual
Current assignee: Individual
Priority date: 1941-06-27
Filing date: 1941-06-27
Publication date: 1944-05-30
Anticipated expiration: 1961-05-30

Description

y 1944310 5. T. HowAD BLUEPRINT WASHING MACHINE Filed June 27-, 1941 2 Sheets-Sheet l y 19449 5. T. HOWARD 2,349,823

BLUEPRINT WASHING MACHINE Filed June 27, 1941 2 Sheets-Sheet 2 any:

k) if Z2] ZV/oodami Patented May 30, .1944

oFFlcs" BLUEPRINT WASHING MACHINE Styles T. Howard, Jeflersonvllle, Ind. v Application June 27, 1941, Serial No. 400,951

' 2 Claims (01. 95-89) (Granted under the act of March 3,

amended April 30, 1928; 3700. G. 7 7) The invention described herein, if patented may be manufactured and used by or for the Government for governmental purposes without the payment of any royalty thereon.

This invention relates to and has for a purpose the provision of a blueprint or photographic film washer and developer which is especially adapted to subject the print or film to various treating or developing operations.

One of the principal objects of the invention is to provide an apparatus equipped with means for securing prints or films on 'a revolvable drum which can be rotated during the processing or treating operations and thereby effect a uniform treatment of the print or film.

A still further object of the invention is to provide an apparatus which operates in such a manner as to continually agitate the processing solution during the treating or developing operations.

Another object of the invention is to provide an apparatus having means whereby the drum of the apparatus containing the film or print may be readily detached to permit another drum to be substituted for treating other films or prints.

Another object of the invention is to provide an apparatus having means for so mounting the drum that it can be conveniently transferred from one solution to another without the necessity of waiting to drain a used tray and refill the same, thereby providing for a continuous treating operation for the film or print.

Another object of the invention is to provide an apparatus which will be free of complicated mechanism, simple and inexpensive, and possess the ability to be operated by one unskilled in the art.

With the above and other objects and advantages in view, the invention consists of features of construction, arrangement and operation of parts which will appear in the specification and be finally pointed out in the claims. I

While the preferred embodiment of the invention is shown, it will be understood that slight changes in form and minor details of construction may be resorted to without departing from the spirit of the invention and falling beyond the scope of the claims.

Referring now to the drawings, in which similar characters and references in the several figures indicate identical parts.

Fig. 1 is a perspective view of the improved apparatus embodying the invention.

Fig. 2 is a side elevation of the same.

Fig. 3 is a longitudinal section taken substantially in the line 4-4 of Fig. 1..

Reference now being made to the drawings by numerals, it! indicates an elongated tank having three semi-circular bottoms, |I, 'I2 and I3, which divide the main tank l into three separate tanks, into which are placed the solutions necessary to completely process the fllmsor prints in a continuous treating operation. The lower edge or periphery M of the tank l0 formed by the walls I is fiat, so that the tank may be set on a flat surface without any liability of being upset.

The tanks ll, l2 and l3 are equipped with drains l6, l1 and I8, respectively, which are adapted to drain the tanks so that the solution can be replenished after the processing has been completed.

The side walls of the elongated tank have depressions or bearings, as shown at I9, 20, 2|, 22 and 23, which are adapted to receive the shaft 2! on which is mounted a drum 25 adapted to receive on the outer periphery thereof photographic films 01 prints to be processed. This drum consists of circular side plates26 of sheet metal or similar material, and a cylinder 21 of wire netting or 017.161 reticulated fabric secured to and extending between the circular side plates, the drum being so constructed that thoroughmirculation of water and solution is permitted.

The drum 25 is adapted to be rotated in the depressions or bearings within the tank by means of a handle 28. Mounted longitudinally on the drum -25 is a clamp 29 adapted to clamp over the edges of the films or prints to retain them on the drum While they are being processed. Connected to r the ends of the clamp 29 are springs 30 which are rigidly secured at the outer ends to the side plates 26. The springs 30 are retained in guides 3i, and are adapted to place tension on the clamp to prevent the films or prints from shifting during the processing. Intermediate the ends of the clamp 29 is a handle 32 which is adapted to be grasped by the operator to raise the clamp against the tension of the springs 30 so that the operator can slip the edges of the print or film under the clamp.

A transfer frame composed of a shaft 33 lying parallel to shaft 24 has a handle 34 formed on one end thereof and has rigidly secured thereto at both ends transfer bars 35 which lie parallel to the side walls l5. These transfer bars have bearings 36 ,in the free ends thereof, that are adapted to rotatably receive the shaft 24. By means of this transfer frame, the drum 25 can be transferred from one tank to the other by merely turning the handle 34 in either direction,

The operation of the devic is simple and will be apparent in the following description:

' Three solutions are placed in the three setarate tanks formed by the three semi-circular bottoms.

The film or print P is clipped to the drum and the shaft of the drum is placed.in the depressions in the first tank where it is rotated by means of the handle on the shaft.

After the proper time has elapsed for the treat-. ment' in the first tank, the drum is transferred to'the next tank by means of the transfer frame and the operation can then be repeated; until the processing is complete, at which time the film or print can be removed and theprocess can be repeated with other films or prints.

It will thus be seen that the device, whil it is simple to operate, will nevertheless process the film without the necessity of having the operator handle the -film or print whil it is bein processed.

The invention therefore exemplifies a processing' device which is simple, easy to operate, and which can be cheaply manufactured and yet can process all types of films or prints.

The invention "is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims without departing from the spirit and scope of the invention.

Having thus described the invention, what is claimed as new and is desired to secure by LettersiPatentis:

l. A photograph print processing tank comprising three adjacent compartments having semicircular bottoms and having partitions between said tanks, the side walls of said tanks having opposed pairs of notches in the side walls centrally of the compartments and at the ends of the partitions, a drum adapted to conform to the curvature of the bottom of said compartments and to receive prints or films to be processed, said drum having a central shaft removably received in the central compartment notches and having a handle for rotating said drum, and a second.

shaft connected to said first shaft by a pair of links at the ends of the drum and received in the pairs of notches at the ends of the partitions. said first shaft being rotatable about the second to shift the drum from-one compartment to another and said second shaft being rotatable about said first shaft to be positioned in another pair v of partition notches.

drum, said drum having a second longitudinal shaft with a handle thereon lying parallel to said first shaft outside said drum and connected to said first shaft, said second shaft being selectively engaged .with the pairs of notches that are aligned with the partitions and having a handle by which the drum can be swung about the second shaft for transfer from one compartment to another and said second shaft being swingable about said first shaft for transfer from one pair of notches to another. STYLES T. HOWARD.