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Coupling
This patent is for a new coupling system to connect hollow pipes. It is specifically designed to address issues of vibration, which cause the coupling pin to become damaged.
Date:
July 10, 1919
Creator:
Hiegel, Joseph L.
Object Type:
Patent
System:
The Portal to Texas History
[Letter from W. W. Kimball Company to C. C. Cox, July 11, 1916]
Letter from the W. W. Kimball Company to C. C. Cox apologizing for failing to include something in their previous letter. Envelope is included.
Date:
July 11, 1916
Creator:
W. W. Kimball Company
Object Type:
Letter
System:
The Portal to Texas History
Headlight-Shade.
Patent for a headlight shade which can be pulled down to block the high beam headlights of a train or car when there is an oncoming train or car.
Date:
July 18, 1911
Creator:
Green, John R.
Object Type:
Patent
System:
The Portal to Texas History