US52748A

US52748A - Developing-stick

Info

Publication number: US52748A
Authority: US
Publication date: 1866-02-20
Anticipated expiration: 1883-02-20

Description

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UNITED STATES PATENT OEEICE. .t

THOMAS O. ROCHE, OF WILLIAMSBURG, NEW YORK.

DEVELOPING-STICK.

Specification forming part of Letters Patent No. 52,748, dated February 20, 1866.

To all whom it may concern:

Be it known that LTHOMAS C. ROCHE, of Williamsburg, in the county of Kings and State of New York, have invented anew and Improved Developing-Stick 5 andI do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l represents a front elevation of this invention. Fig. 2 is a sectional side elevation of the same.

Si milar letters of reference indicate like parts.

This invention relates to a Stick or handle provided at one end with a suction-pad of india-rubber lor other suit-able material in such a manner that by the application of said suctionpad a plate of glass or other material can be conveniently raised and held in the proper position for applying the developing solution, and all necessity for handling the plate and the danger of soiling the ingers are avoided. Said stick is also provided with a guard at about the middle of its length, or at a convenient distance from the end carrying the pad, in such a manner that the hand of the operator is protected against the liquid or liquids which may run down on the stick.

A represents a stick of wood or any other suitable material, to one `end of which a suction-pad, B, is attached. This pad consists of a plain piece of india-rubber cloth or other suitable material, which is secured to the stick by a screw, a, said stick being provided with a projection, b, so as to throw the pad oi' from its side to a convenient distance. When the pad is depressed on a plate ot' glass or other material, such as generally used in photographic operations, it adheres to the saine, (particularly if the plate is moist, as is gen! erally the case,) `and said plate can be conveniently taken out of the bath and held in the desired position for the application of' the developing solution without soiling the hands or bringing the hands or ngers in contact with the silver or other corrosive substance. Said stick is also furnished with a guard, O, at such a distance from the pad that it does not interfere with the application of the same to the plates. The object of this guard is to prevent the uids which may run down on the stick from coming in contact with the hand which holds the stick.

This simple instrument is of great convenience in photographic operations. 'It can be Inade cheap, and it can be used fora long time without getting out of order.

Vhat I claim as new, and desire to secure by Letters Patent, is-

A developing-stick composed of a handle, A, and suction-pad B, as a new article of manufacture.

2. The guard O, in combination with the stick A and pad B, substantially as and for the purpose set forth.

THOS. C. ROCHE.

Witnesses M. M. LIVINGSTON, ALEX. F. ROBERTS.