Patent Model - Improvement in Bolt-Holders

Maker and role
Spicer Butterfield (b.1820, d.1889), Patentee
Sylvester Taylor, Assignee
Spicer Butterfield (b.1820, d.1889), Assignee
Production date
Jun 14 1870
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Object detail

Iron, wood
5 1/2 x 13 x 3 1/2" (14 x 33 x 8.9cm)
Butterfield's patent "consists of a tool to hold the head of a bolt firmly jammed against the object so that it may not be turned by the application of the wrench to the nut." (Patent Number 104,264)
Object number
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