PT [NUMBER 19. VOLUME IX.) contact with the top surface of the cam at the SCIENTIFIO AMERICAN, lowest point, c, as shown in the front elevation PUBLISHED WHEKLY, and then as the cam revolves, gradually comes At 128 Fulton street, N. Y. (Sun Buildings.) in contact with the highest points of the… … tom in the manner shown, the box and stand- way asthe doors; and a house so protected pendulum. Its oscillations are isochronous ard being cast in one piece; D is the hammer only when it moves in a cycloidal path. It can moving up and down in the guides, d d. be kept in this curve by making the rod…
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