Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in constructive and operative machinery and the mechanical arts, being practically a mechanical dictionary, commencing with a rudimentary description of the early known mechanical powers and detailing the various motions, appliances and inventions used in the mechanical arts to the present time, including a chapter on straight line movements, by Gardner D. Hiscox (1914)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 376
1522. TRAMMEL FOR DRAWING ELLIPSES.—Grooves at right angles direct two studs on apencil bar for the elliptical motion of the pencil.Also called an ellipsograph. 1523. ELLIPSOGRAPH. — A is a fixed centre j B, traversed in a straight line, wdllmake the pencil at C trace an elliptical curve. 1524.…
Mechanical movements
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