Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 384
1540. ALMONDSFLEXIBLE METALLICTUBE.—A coil of round wire,open wound, with a coil oftriangular wire wound tightly-over it. Bending of the coiltube allows the triangular sec-tions to draw in on the outside of the bend and to push out on theinside, keeping the points of contact tight. 1541. EVO-LUTION…
Mechanical movements
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