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3 Matching Results
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Compressor.
Patent for a refrigerating machine compressor, which compresses more gas, cools the compressor with the incoming gas, and uses excess heat to dry the gas coming in.
Date:
April 19, 1910
Creator:
Mayhew, John Daugherty
System:
The Portal to Texas History
Well Drilling Apparatus
Patent for a well drilling apparatus. This invention applies to the drilling of oil wells. Illustration included.
Date:
April 21, 1908
Creator:
Milliron, Charles
System:
The Portal to Texas History
Switch Attachment.
Patent for a switch attachment that consists of a derailing guard, a side track rail, an adjustable shoe that pivots next to the rail, a vertical groove in the end of the shoe, and a swinging free arm.
Date:
April 3, 1894
Creator:
Warren, Governor D. & Casey, James
System:
The Portal to Texas History