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US Patent: 131,695
Improvement in Fruit-Jars
John L. Mason - New York, NY

USPTO Classifications:
215/276, 81/120

Tool Categories:
wrenches : jar wrenches


Not known to have been produced

C. Wahlers
E. F. Kastenhuber

Patent Dates:
Applied: Aug. 09, 1871
Granted: Sep. 24, 1872

Patent Pictures: [ 1 | 2 ]
John L. Mason Pat. Sept. 24, 1872
USPTO pdf tiff
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The patent is for a stepped jar closure matching a stepped jar shoulder, a rubber sealing ring, and a metal screw band with an outside lug. The wrench shown in the drawing is described in the specifications. Mason refers to previous patents (no. 102913 and 115754) in the specifications.

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