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Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices"; (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing company · leaf 37

An illustration from Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical mvements, powers and devices";, 1917, leaf 37
36. ACOUSTIC TELEPHONE. The characteristics of this tele-phone are a curvedmouthpiece, D, a vi-brating chamber, I,with an ear tube, T.for returning the vi-brations to the earwithout moving thehead in conversation.It also has attached aclock-gear vibrator,which makes a loudcall by the hammerstrokes… … SECTION III. MEASUREMENT OF POWER,SPRINGS. 33 Section III.MEASUREMENT OF POWER, SPRINGS. 38. REGISTERING WIND VANE. The wind vane, a a, 15feet above the roof of the building, the vertical shaft, b b, which is fastened to and turns with the vane,and gives corresponding movementsto the cylinder, c c,…

Mechanical movements

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