If you find a patent number or patent date by this manufacturer that is not on this
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Key to Links for Patent Information
USPTO = U.S. Patent Office .
Images of the actual patent can be viewed on the U.S. Patent Office web site but
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DATAMP = Directory of American Tool And
Machinery Patents . A sister site to VintageMachinery.org with information
on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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973,124
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Oct. 18, 1910
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Combined Punch and Shear
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Jacob Monsos |
Minneapolis, Hennepin County, MN |
Abstract:
The object of my invention is to provide a. machine by means of which a bar or plate of metal can be easily and quickly punched or cut off.
Claim:
A machine of the class described comprising a base, a bracket overhanging said base, a plunger vertically slidable in said bracket, a punch carried thereby, a link pivotally connected with said plunger and haying a recess, a crank having bearings in said bracket and rotating therein and adapted to enter said recess, said crank exerting a downward pressure on said link and plunger to perform the initial punching operation, and means inoperative during the initial movement of said link but becoming operative during its subsequent movement to complete the punching operation. |