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51 Matching Results
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51
Oscillatory Engine.
Patent for a new and useful oscillatory engine, including instructions and illustrations.
Date:
February 27, 1900
Creator:
Hutchison, Wilson Frank
System:
The Portal to Texas History
Penholder Attachment
Patent for an attachment for pen holders which acts as an extra supply of ink. Illustrations included.
Date:
September 12, 1911
Creator:
Harmon, James W.
System:
The Portal to Texas History
Dubbing-Machine.
Patent for improvements to the dubbing-machines with illustrations. Specifically, this improvement is aimed at "dressing ship timber" (line 15) in an effort to make the process easier and more efficient.
Date:
June 10, 1919
Creator:
Cobb, Dan L. & Moore, William W.
System:
The Portal to Texas History