Annual report of the Commissioner of Patents (1837)
United States. Patent Office · [Washington, D.C.] : Patent Office · leaf 95
et, fromwhich proceed the two wires, v and i, which connect with the wires Jtand ;?, of figure 1. J and J is the brass frame containing the wheel work,C and E, the pin-wheel D, the dial plate I, and the barrel B, which.is driven by a weight and cord. In the side of the wheel D are pinsprojecting… … fastened upon a horizontal rod, sliding freely throiigli elie standairds,1 and 2. G represents a spring, fastened to the frame J, and whichcarries hack the armature, F, when the magnet has ceased to attractit. From the armature there extends downward an arm, K, which,as it approaches the pin-wheel…
United States. Patent Office · Patents · Agriculture
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