Resource Type
Counties
3 Matching Results
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Vegetable-Cutter
Patent for a vegetable cutter. Illustrations included.
Date:
June 22, 1909
Creator:
Spacek, Joseph P.
System:
The Portal to Texas History
Valve-Gear for Engines.
Patent for a valve gear for steam engines that can reverse or stop the rotation of the engine shaft, with illustrations.
Date:
June 19, 1906
Creator:
Hanser, Joseph
System:
The Portal to Texas History
Shutter-Actuating Apparatus.
Patent for a device which acts as "a simple and relatively inexpensive apparatus by means of which a camera shutter may be operated either for snapshots or time exposures, from a point at a distance from the camera so that the operator may be included in the photograph and yet be able to absolutely control the time and duration of the exposure" (lines 10-17). Illustrations included.
Date:
June 29, 1920
Creator:
Emmrick, Hans B.
System:
The Portal to Texas History