U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 525
all adapt- 20ed, in combination, to release the gravity shieldand expose the contents of the hopper substan-tially as and for the purpose specified. In testimony whereof I have hereuntosigned my name, in the presence of two at- 25testing witnesses, at Louisville, in the countyof Jefferson, in the… … Tvv.3
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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