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Safety Device for Elevators.
Patent for an improved elevator safety device that engages the brakes should the cable break or engine become inoperable to bring the elevator to a gradual stop, with illustrations.
Date:
May 15, 1917
Creator:
Davis, John L.
System:
The Portal to Texas History
Cotton Chopper and Cultivator.
Patent for a new and improved cotton chopper and cultivator. This design consists in "[t]he combination, with the chopper-handle, of the notched-roller, the mortised cross-beam, having the pivot across its mortise or hole, and the spring, attached to an upright, and the handle, whereby the chopper may be operated" (lines 73-78).
Date:
May 15, 1883
Creator:
Pettitt, Francis Alexander.
System:
The Portal to Texas History