American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 283
ofcentres is inversely proportioned as the angleof the point of contact with the line of centres,and that local resistance increases in proportionto this angle. This fact, then, demonstrates therule that action before line of centres is an er-ror. Let us now examine the effect of the con-tact past… … the bar cMna vertical direction. This bar iskept in equilibrio by the other bar d a, whichis propelled by a force in the opposite direc-tion. Without discussion of the principle ofthe inclined plane which is here involved, andfor the explanation of which I would refer thereader to the lecture on…
Clocks and watches
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