Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 73
y pinswill be sufficient, with a larger disk sixty pins may be used. 50 EXPERIMENTAL SCIENCE. Above the scape wheel arbor there is a wooden rollerfurnished with steel wire pivots. In the roller is inserted asteel wire forming the escapement or crutch, the ends ofthe wire being bent inward to form… … Application of the Pendulum to Clocks. ward obliquely through a hole in the middle plate, and isfinally bent into an oblong loop extending rearward. In aspHt stud in the back piece is inserted the flattened upperend of the pendulum rod. A small rivet passes throughthe upper extremity of the rod.…
Physics · Lantern projection · Electric apparatus and appliances
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