MECHANICAL IMPROVEMENTS. VOLUME I."] NEW-YORK, THURSDAY, AUGUST 13, 1846. [NUMBER 47, THE THE INDEPENDENT D00R-L0CK, A LIST OF PATENTS ISSUED FROM TrfE 10th FEBRUARY TO MARCH 14th, 1846,. The Advocate of Industry and Enterprise, and (.Continued from No. 46.) Fig- 1. Fig. ■<?. Journal of Mechanical… … ment in Safety Cars for inclined planes : Feb. lOilb., TRADES, with engravings,—Curious Philosophical Ex- Introduction.—Among the immense variety of new and variously constructed locks,— some of them complicated and expensive—which have To Elisha S. Snyder, of Charlestown, Virginia, periments,—the…
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