ete adel va s cH a IPs cl = rf | ' a ae asians THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, . MECHAN ICAL AND OTHER IMPROVEMENTS. | VOLUME 5 6.) NEW-YORK, } NOVEMBER R 16, 1850. [NUMBER 9. ' "THE cle eg i cam arm, F, from the cross*head, which arm Scientific American, IMPROVED HAND COPYING… … others than the Commonwealth, was followed| This is a very neat and good invention of| handle or lever which moves on a pivot joint | lowest, out of contact with the arm, F. A by a resolution, unanimously adopted, that|Mr. A. A. Wilder, of Detroit, Michigan, the| at its lower end, on the top of the…
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