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CAR-BRAKE
Patent for new and useful improvements for Caboose Cars' brakes. The brakes can be applied from within the car, and no strain is applied to the car frame or body.
Date:
July 20, 1880
Creator:
Dwyer, Denis R.
System:
The Portal to Texas History
Machine for Filing Gin Saws.
Patent for a new and improved machine to sharpen the teeth of cotton gin saws. This design utilizes two bevel-faced wheels connected to a block between two arms that clamp the saw blade. The bevel-faced wheels sharpen the teeth of the blade, and the nuts and bolts of the frame allow for movement as well as tightening and loosening.
Date:
August 17, 1880
Creator:
McAllister, Alexander F.
System:
The Portal to Texas History
Wrench.
Patent for a new and improved wrench. This design is "especially adapted for manipulating pipe-joints, though applicable, also, for use in manipulating nuts, &c.; and it consists in the [novel] detailed construction and combination of operating parts" (lines 24-28).
Date:
September 21, 1880
Creator:
Weir, Duncan
System:
The Portal to Texas History