ctly copied | machine in operation, . : bs ioe upon metal by engraving, with, it is claimed, greater facility | It is extremely simple in construction, as will appear from! The saw hasa direct action from the two crank shafts, A, a accuracy than by a siilled hand engraver. the description below.… … : : eee . rod, I, the belt J, being employed graver, B, but diminished in ex- SPENCER’S ENGRAVING MACHINE. imoly t h pee ee tent di as the pivots, [ : ‘ simply to carry the upper shaft = asta ” dD ih their corresponding pivots below, | secure durability, the shafts being of ample size, and running…
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