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3 Matching Results
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Drill-Holder.
Patent for a drill holder that may be adjusted to automatically drill forward when manually rotated.
Date:
October 12, 1915
Creator:
Lawson, Harry C.
System:
The Portal to Texas History
Film Actuating Mechanism For Motion Picture Cameras.
Patent for useful improvement in Film Actuating Mechanism for Motion-Picture cameras and cinematograph motion picture cameras. This invention simplifies and improves on the construction and capacity of film.
Date:
May 12, 1917
Creator:
Gildersleeve, Fred E. & Trice, William L.
System:
The Portal to Texas History
Nutcracker.
Patent for a nutcracker, which does not crush the nut inside.
Date:
July 12, 1910
Creator:
Fort, Foster W. & Cruger, Harry T.
System:
The Portal to Texas History