US Patent: 437,403


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US Patent: 437,403

Clamp

Patentees:

Arnold Nacke (exact or similar names) - Philadelphia, PA

Albert Brinkmann (exact or similar names) - Philadelphia, PA

USPTO Classifications:

269/166, 269/203, 269/221, 269/285

Tool Categories:

work holding : clamps : bar and pipe clamps

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Jan. 16, 1890
Granted:	Sep. 30, 1890

Patent Pictures:

Arnold Nacke and Albert Brinkmann patent September 30, 1890

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Description:

The movable jaw has sliding plates that bear against the hank of the clamp. The base of the sliding jaw has a thumb screw which hold it in place, and by lever action also tightens the grip of the clamp.