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US Patent: 65,138
Improvement machine for cutting sheet or bar metal
Patentee:
Timothy F. Taft (exact or similar names) - Shrewsbury, MA

USPTO Classifications:
83/859

Tool Categories:
metalworking machines

Assignees:
Augustus Rice - Worcester, MA

Manufacturer:
Rice & Whitcomb - Worcester, MA

Witnesses:
J. Henry Hill
C. W. Estabrook

Patent Dates:
Granted: May 28, 1867

Patent Pictures: [ 1 | 2 ]
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Vintage Machinery entry for T. F. Taft
Vintage Machinery entry for Whitcomb Mfg. Co. (Rice & Whitcomb)
Description:
This machine for cutting sheet or bar stock is a "lock-shear". The improvement is with the arms J J and bolt K (see image 2), which is claimed to sustain one-third more pressure without breaking than previous designs.

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