US277737A - Photographic-plate holder - Google Patents

Description

(No Model.)

F. WIJAOKSON.

PHOTOGRAPHIG PLATE HOLDER.

Patented May 15, 1883.

N. PETERS, Phowulho m hcr. Washmglun, D. c.

tory. The moistening of the slides injures them, and the paper, if it does not come off UNITED STATES PATENT OFFICE.

FRANOIS W. JACKSON, OF EAST ORANGE, NEVV JERSEY.

PHOTOGRAPHIC- PLATE HOLDER.

SPECIFICATION formingpart of Letters Patent No. 277,737, dated May 15, 1883,

I Application filed February 3, 1883. (No model.)

To all whom it may concern:

' Be it known that I, FRANCIS W. JACKSON, a citizen of the United States, residing at East Oran ge,in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Photographic-Plate Holders; and I do hereby declare the following to be a full, clear, and exact description of theinvention,such as willenable others skilled in the art to which it appertains to make and use the same, refereneebeing had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates more particularly to that portion of photographic apparatus known as dry-plate holders, and has for its object an improved method of constructing said holders, which will be hereinafter fully set forth, and finally embodied in the claims.

In the drawings, in which similar letters of reference indicate like parts in each of the several figures, Figure 1 is a plan view of a plate-holder; and Fig. 2 is a sectional view of the same, taken through line as.

The purpose of these holders is well understood by those skilled in the art.

The dry-plate system of photography, as is well known, has superseded to a great extent the wet-plate system, but more particularly for ont-of-door photography, or viewing, as it is called. The simplicity of the new process has thrown the art open to the amateur, and its popularity is rapidly increasing.

The defect in the plate-holders up to the present time has been that there were no permanent means provided to designate upon the holders which plates had been exposed, and innumerable errors of exposure have been made through this defect. It has been ens tomary with some to paste paper upon the slides of the plate-holders, on which to make memoranda; but this plan is very unsatisfacaccidentally, needs frequent renewin The advantage of having a permanent'face on which to writethe details of the exposure of the plate, the view taken, 850., will therefore be manifest to amateur or professional photographers. This object I accomplish either by coating the slides a a,or any part of the frame b of plate-holder, or both, with mineral, metallic, or rubber paint, or enamel or silicate,

or paper, or any other substance coated with silicate or analogous materials, or by constructing the slide or frame of the holder of any materials-such, for instance, as celluloid or rubber-compounded with silicate or analogous materials, so as to form a surface capable of being written upon and of having the writing erased at pleasure an indefinite number of times without impairing or injuring the said surface. By thus constructing these articles every facility is afforded for preserving with each view the data referring to it.

I am aware that plate-holders, &c., have been made heretofore of plastic and other materials-such as rubber, celluloid, paper, papier mach, wood, wood pulp, card board, metal, &e.and also by attaching together a number of layers of materials; but never, so far as I am aware, have they been provided permanently with a surface to admit of being written upon and of the writing being erased without injury to said surface, as herein contemplated.

Having thus described my invention, what I claim as new, and wish to secure by Letters Patent, is

1. As a new article of manufacture, adryplate holder for photographic purposes, having the frame or slide, or both, provided with a surface of silicate or other material which will admit of being written upon and havingthe writing erased without injury to said surface, as and for the purposes herein set forth.

2. In. a dry-plate holder for photographic purposes, the combination, with the frame thereof, of a slide having a surface of silicate or other material which will admit of being written upon and the writing erased without injurin g the said writing-surface, as set forth.

3. In a dry-plate holder for photographic purposes, the combination of a frame with a slide constructed of such material as celluloid and prepared rubber, having the outer or exposed portion thereof prepared or coated with materials, as herein described, so as to admit of being written upon and of the writing being erased an indefinite number of times without impairing said surface, as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 30th day of January, 1883.

Witnesses: FRANCIS W. JACKSON.

OLIVER DRAKE, F. F. CAMPBELL.

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