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Scientific American, Vol. 57, No. 20 (November 1887) (1887)
leaf 4
the upper centering shaft fitting on the top of the valve stem, and the centering end of the arbbr en- gaging the lower end of the valve, held in the cutter, when the operator turns the crank arm with one hand and feeds the work downward by turning the band wheel with the other hand, the elasticity… … of N. Y., as stated in the article. tating the removal of the goods from the shelves. HOLLINOSWORTH'S HAND DBILL FOB VALVE WOBE. © 1887 SCIENTIFIC AMERICAN, INC.Bellows · Patented · Center · Contained · Lines · Valve · Scientific American · Express money · Address munn · Glass tube · Otto gas · Corner lines · Large number · Ring frame · Storage battery · Set screw
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