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3 Matching Results
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Vise and Saw Clamp
Patent for a vise and a saw clamp
Date:
December 19, 1916
Creator:
King, William T.
System:
The Portal to Texas History
Switch-Stand.
Patent for a switch stand that automatically switches to danger when unlocked and has independently rotating switch operating spindles and target spindles.
Date:
October 19, 1915
Creator:
Praetorius, Richard P.
System:
The Portal to Texas History
Bicycle.
Patent for a bicycle that has a drive wheel, a ratchet wheel attached to the drive wheel, a chain that goes around the ratchet wheel, an apparatus for reciprocating the chain, a guideway from the chain to the ratchet wheel, a knob on the chain that engages the guideway, a pair of levers connected to the chain, and a chord that connects the levers to the chain.
Date:
February 19, 1895
Creator:
Williams, Elbert D.
System:
The Portal to Texas History