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Scientific American, Vol. 88, No. 19 (1903) (1903)
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on the spring throws up the game board reom so that no ray of white light may fall upon the and exposes the cavity J. plate, one must move with utmost caution under the _—_— Oo dim red light to avoid upsetting and spilling the de- A SAFETY CATCH FOR ELEVATORS. veloping and fixing solutions. A very… … situated at any suitable point. The garbage can is sus- trays from pouring out when the device is held up to pended from a pair of trolley wheels adapted to travel the light, a strip of glass is cemented over the lower SAFETY CATCH FOR ELEVATORS. © 1903 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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