US419360A

US419360A - Photographic-printing frame

Info

Publication number: US419360A
Authority: US
Publication date: 1890-01-14
Anticipated expiration: 1907-01-14

Description

(No Model.)

L. ROUILLION. PHOTOGRAPHIG PRINTING FRAME.

No. 419.360. Patented Jan. 14, 1890.

Minesses.

N. PETERS, Photo-Uihognphor. Washington, D. C.

UNITED STATES PATENT OFFICE.

LOUIS ROUILLION, OF ITHAGA, NEW YORK.

PHOTOGRAPHlC-PRINTING FRAME.

SPECIFICATION forming part of Letters Patent No. 419,360, dated January 14, 1890.

Application filed August 16, 1889. Serial No. 321,012. (No model.)

To all whom it may concern.-

Be it known that I, LOUIS ROUILLION, a citizen of the United States, residing at Ithaca, in the county of Tompkins and State of New York, have invented a new and useful Automatic Register for Photographic-Printing Frames, of which the following is a specification.

My invention relates to animprovement in automatic registers for photographic-printing frames, the object of which is to automatically register the number of prints being made. I attain this object by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a top view, and Fig. 2 a vertical section through 1 2 in Fig. 1. Fig. 2 is drawn to a scale twice that of Fig. 1.

Similar letters and figures refer to similar parts in both views.

The spring-bar A, which clamps the shutter 1), also presses upon the ratchet-wheel O, and by its friction upon said ratchet-wheel causes it to move with it when turned in the direction of the arrow. The are of a circle, with center at D, which the spring-bar A describes when thus turned, is limited by the strip E and the peg F. These latter two are so related to each other and to the pawl G that when the spring-bar A, in being turned in the direction of the arrow, slips from beneath the strip E it will touch the peg F, and at the same time the pawl G will drop into the next tooth of the ratchetwheel 0. The pawl G is kept in place by the spring H. When the spring-bar A is turned back in the direction contrary to that of the arrow, the pawl G keeps the ratchet-wheel G stationary, and a lip turned down on the strip E at I serves to keep the spring-bar A from going beyond its first position. Stamped upon the upper surface of the ratchet-wheel C is a series of numbers concentric with said ratchet-wheel. In the spring-bar A is an opening J, having a beveled edge and so placed as to exhibit one, and but one, of the figures upon the ratchet-wheel O at a time. The spring-bar A is countersunk, as shown at K, and beneath the ratchet-wheel O is a washer L, resting upon a washer M. Now, supposing the register to exhibit the number 1, the print being finished, the frame the ratchet-wheel C. Another print being i put into the frame, the spring-bars are turned back to clamp the shutters, and in so doing the opening J is brought over the number 2, thereby showing that the second print is being printed. A similar process exhibits the number 3, and so on for the number of prints that it is desired to print.

I claim as my invention and desire to secure by Letters Patent- 1. In a photographic-printing frame, the combination of the back and the spring-bar A, pivoted upon the back anl adapted to engage the sides of the frame, with a ratchetwheel 0, also pivoted upon the back and between the bar and back, substantially as described.

2. In a photographic-printing frame, the combination of the back and a spring-bar pivoted upon the back and adapted'to engage the sides of the frame with a ratchet-wheel upon which is stamped a series of numbers concentric with said ratchet-wheel, also pivoted upon the back between the bar and back, with washers between the ratchet-wheel and back, substantially as described.

3. The combination, in a photographicprinting frame, of a back, a spring-bar being countersunk on its under side, hung upon a pivot on the back and adapted to engage the sides of the frame, a ratchet-wheel bearing stampedupon it a series of numbers concentric with itself and. hung upon the same pivot as the bar and between the bar and back, with washers between the ratchet-wheel and back, a pawl with spring to engage said ratchet-wheel, a strip E, having a lip I, serving to hold in check the spring-bar A, and a hole through the spring-bar to exhibit in turn each of the series of numbers, all substantially as and for the purpose set forth.