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6 Matching Results
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Wrench.
Patent for a wrench that can hold round-headed fastening elements (bolts) so as to prevent from turning in the same direction. The wrench can be held while the jaws grip and hold the round heads of bolts.
Date:
October 23, 1917
Creator:
Wright, John G.
System:
The Portal to Texas History
Wire-Stretching Machine.
Patent for a wire stretching machine, which is simple to build and operate and is durable and strong.
Date:
March 23, 1909
Creator:
Edwards, Henry & Sadler, Millard F.
System:
The Portal to Texas History
Felt Picker
Patent for a felt picker. This invention is for use of piano-workmen in making flexible the felts in piano-actions.
Date:
June 23, 1903
Creator:
Bell, William Jackson
System:
The Portal to Texas History
Cultivator.
Patent for a cultivator, which has a movable beam for use as a straddle row cultivator that allows the draft animal to walk on either side of the rows of plants.
Date:
July 23, 1907
Creator:
Nicholson, Matthew H.
System:
The Portal to Texas History
Valve.
Patent for a valve made up of a shell with a water inlet and a water outlet, a perforation for the valve stem, a gable-shaped seat made from hard metal that is fitted into the shell, a valve stem that works up and down the shell and with a shoulder, a valve with a hollow neck, a soft contact ring between the gable-shaped seat and the face of the valve, a guide and cap that fits in the shell, a stem nut, and a stuffing-box.
Date:
July 23, 1895
Creator:
Speer, George F.
System:
The Portal to Texas History
Improvement in Plows.
Patent for an improved design of the plow consisting of a modified foot of the plow and curved blade. Illustrations included.
Date:
January 23, 1877
Creator:
Moore, Thomas M.
System:
The Portal to Texas History