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Scientific American, Vol. 62, No. 26 (1890) (1890)
leaf 3
ones, but stop short of the outside surfaces, car, where there is a hand wheel, by operating which from swinging out of their proper course. The collar, leaving a covering piece of wood over the longitudinal the cam block is turned to spread the inner limbs of being a separate piece, can be readily… … serves to form the bottom of the pail. Centrally be- WASHBURN’S ADJUSTABLE COLLAR FOR PAN DRIVERS, © 1890 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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