United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 502
or sup-porting and revolving the cylinder, of a trav-eling slide or block, a weighted arm pivotallyconnected to said slide, a knife or tool for par-ing or smoothing the surface of the cylinder,and a spring connection between said knifeor tool and said pivotal weighted arm, sub-stantially as…
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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