US639496A

US639496A - Apparatus for marking photographic negatives.

Info

Publication number: US639496A
Application number: US68501798A
Authority: US
Inventors: John G Baker
Original assignee: Individual
Current assignee: Individual
Priority date: 1898-07-02
Filing date: 1898-07-02
Publication date: 1899-12-19
Anticipated expiration: 1916-12-19

Description

Patented Dec. l9,.l899.

I I H I I J. a. BAKER. APPARATUS FOR MARKING PHOTOGRAPH") NEGATIVES.

(Application filed July 2, 1898.

(No Model.)

.rrn TATES FFI CE...

JOHN G. BAKER, OF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR MARKING PHOTOGRAPHIC NEGATIVES.

SPECIFICATION forming part of Letters Patent No. 639,496, dated December 19, 1899. Application filed July 2, 1898. Serial No. 685,017. (No model.)

To all whom, it may concern:

Be it known that I, JOHNG. BAKER, a citizen of the United States, residing in Philadelphia,Pennsylvania,have invented certain Improvementsin Processes of and Apparatus for Marking Photographic Negatives, of which the following is a specification.

The object of my invention is to construct a device for printing the identification lettering upon photographic negatives in as'atisfactory manner by the use of ordinary metallic type and transferring device.

In the accompanying drawings, Figure 1 is a perspective view of my improved typeholder with one cap-plate mounted thereon. Fig. 2 is a transverse sectional view showing the inking-cap on the type-holder. Fig. 3 is a transverse sectional View showing the transfer-cap mounted thereon with the transferroll in position. Fig. 4is a perspective view showing the method of transferringthe indicating-letters from the roller to the photographic negative. Fig. 5 is a perspective view of the inking-cap, and Fig. 6 is a perspective View of the transfencap.

Heretofore the lettering of photographic negatives for identification has been generally done by means of a rubber stamp or scratched by a needle upon the fihn. The first method is the one now in vogue; but this is not satisfactory in many instances, as itis impossible to print evenly with rubber type, and consequently great care has to be exercised. By my invention I can use metal type, set up in the ordinary manner, and transfer the impression onto a transfer-roller, from which it is transferred to the photographic negative.

A is the type-holder, made as shown in the drawings, having a base a and a tapered body a, in which is a longitudinal groove a for the reception of ordinary type c of type-metal. This groove is made wide to accommodate type of different thicknesses, and I mount on each side of the type a filling-strip c and use a screw Z) for adjusting the strips to the type. A screw 1) at the end is used as a clamp-screw for clamping the type tightly in the holder. In some instances the strips 0' and the screw 1) can be dispensed with where it is desired to use type of a given thickness.

Adapted to be mounted on the type-holder are two caps B and D, as shown in Figs. 5 and-6. The cap Bis the inking-cap, the surface I) of the cap acting as the ink-distributing table. Ahandled inking-roller E of any suitable form is used, and the ink is first worked over the surface 6 of the cap B by the roller until the ink is thoroughly distributed thereon. The cap Bis then placed on the type-holder A and the inking-roller run over it, as shown in Fig. 2, inking the surfaces only of the type. The upper surface of the cap B prevents the roller smearing the edges of the type, insuring a proper transfer and making itimpossible even for a careless person to place more ink upon the type than necessary. After the type is inked the cap Bis removed and the cap D is placed in position, as shown in Fig. 3. This cap is perfectly clean and is preferably provided with a flange cl, which will support the transfer-roller F previous to its being rolled over the inked type, insuring a perfect alinement.

The roller F can be made of any suitable material that will receive the transfer and is provided with two extensions ff at each end, which may be held by the ends to move the roller over the inked type and to transfer it onto the photographic plate as, Fig. 4. By resting the roller against the edge of the plate and then moving it forward evenly the transfer can be made onto the face of the negative in any position desired.

I find that I can accurately mark the neg atives by the apparatus above described in a satisfactory manner.

The sides of the body are preferably made beveled, as shown, and the flanges of the caps 13 and D are also beveled to correspond to the bevel of the body, so that when the cap is placed upon the body a snug fit is assured.

. I claim as my invention-=- 1. The combination of a holder adapted to receive a row of printing-type, the face of the type projecting above the surface of the, holder, a cap-plate adapted to be placed upon the holder, an opening in the cap plate through which the type extends, the upper surface of the cap-plate being on a line with the face of the type, substantially as and for the purpose specified.

2. The combination of a holder for type, the face of the type extending above the sur face of the holder, with two cap-plates fitting said holder and each having an opening through which the type extends, one capplate acting as the inking-table for an inkroller when applied to the type, and the other cap-plate acting as a support for the impression-roller, substantially as described.

The combination of the body A slotted to receive a row of type, said type projecting above the body, means for securing the type in the holder, a cap-plate having a flange, and slotted for the projecting portion of the type, with a transfer device adapted to be guided by the flange, substantially as described.

JOHN G. BAKER.

Witnesses:

WILL. A. BARR, J os. H. KLEIN.