Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 304
1194c. COMPENSATING PENDULUM.—The heavy black lines represent steel rods; the openlines the brass rods. The relative expansion of steelis 2, brass 3. The center rod is fixed to the lowercross head at the top and slides freely through thecross heads at the bottom. In the combinationshown the length… … 1194J. ELECTRO-MAGNETICCLOCK PENDULUM.—P is anordinary pendulum with a notchedpiece a and an iron piece e attached,m is an electro-magnet. E is a bat-tery; f f are the springs which actas contact pieces attached to thebattery. /> is a steel piece called thepallet. As long as the pendulumis at…
Mechanical movements
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