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Riveting-Mandrel.
Patent for a riveting-mandrel "for riveting the overlapping ends of sheet metal to form pipes, tubes, or the like" (lines 10-12) including illustrations.
Date:
June 1, 1897
Creator:
Mantey, John F.
System:
The Portal to Texas History
Gage.
Patent for a gage that has a beam with a saw kerf at one end, a clamp made up of a tube with parallel wings that are inserted into the kerf, a scribing point in the tube, "and means for clamping the separated ends of the beam tightly against the parallel wings of the clamp" (lines 57-59).
Date:
November 12, 1895
Creator:
Holmes, Elijah H.
System:
The Portal to Texas History