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Improvement to Elevator Signal Systems
Patent for an improvement to an elevator in which “to provide an elevator signal system that will permit a party at any landing to indicate his desire to go up or down to the elevator operator by pressing one of two buttons” (lines 10-15). Instructions and illustration included.
Date:
February 2, 1915
Creator:
Johnson, Charles S.
System:
The Portal to Texas History
Kitchen-Cabinet.
Patent for a kitchen cabinet, which is compact but has many features such as a built in sifting system from the glass fronted dry ingredient drawers, a sink, fold out counter space, and slide-out bottom drawers.
Date:
February 2, 1909
Creator:
Ridley, Richard W. & Clark, Andrew R.
System:
The Portal to Texas History
Improvements to Storage House Aerating System
Patent for improvements to storage house aeration systems for agriculture and the storage of vegetables.
Date:
February 2, 1920
Creator:
Vaughan, Robert B. & Love, Ralph M.
System:
The Portal to Texas History
Gas-Compressor.
Patent for gas compressors for ice and refrigeration machines, with instructions and illustrations.
Date:
March 4, 1891
Creator:
Ambrose, Joseph D.
System:
The Portal to Texas History
Power Stand.
Patent for a new and improved power-stand. In this design, "a single pulley is mounted upon a stand, the shaft of said pulley bearing at each end, outside of the stand, one part of a friction or other clutch, which may be engaged with or disengaged from the corresponding part of a clutch attached to the shaft of a machine" (lines 13-19).
Date:
February 2, 1886
Creator:
Hetherington, Johnathan S.
System:
The Portal to Texas History