1888, 13 January
Patent No: 875,006. Lafayette W. Seavey: Supporting frame for photographic background.

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Published in "The Photographic News", Vol.XXXII, No.1581, January 13, 1888, p.28
 
Patents granted in America
Patent No: 875,006. Lafayette W. Seavey, New York, N.Y.: Supporting frame for photographic background. Filed February 28rd, 1887. Serial No. 2528,471. (No model.)
 
Claim. 1. The combination, with a horizontal supporting shaft or drum, of an endless chain of parallel independently rotating rollers carried over said shaft and adapted to receive flexible background, substantially in the manner and for the purpose herein set forth.
 
2. In a support for photographic backgrounds, the combination of an endless belt, a horizontal shaft or drum over which said belt is carried, a supporting-frame for said shaft, journal-bearings fitted to and carried upon the outer face of the belt, and independent parallel rollers mounted in said bearings, substantially in the manner and for the purpose herein set forth.
 
3. The combination, with a suitable supporting-frame, pulleys mounted at the top thereof, and an endless chain of rollers carried over and depending from said pulleys, of a second set of pulleys mounted on the frame below the first at the rear of a vertical plane passing through their axes, and over which the lower end of the chain of rollers is carried, substantially in the manner and for the purpose herein set forth.
 
4. The combination with a suitable supporting-frame, pulleys mounted at the top thereof, and an endless chain of rollers carried over and depending from said pulleys, of a catch on the frame fitted to engage a series of apertures in the lateral face of one of the pulleys, substantially in the manner and for the purpose herein set forth.
 
LL/34555