Patent information:

Patent:Utility 751,841
Patented:February 9, 1904
Applied:October 29, 1902
Title:Thread Cutting Machine
Description:Insulator pin threading device
Category:Pin
Assigned to:Defiance Machine Works

Patentee Information:

ENSIGN, George A. Defiance, OH

Class and subclass information:

Class:142WOOD TURNING
Subclass:24CIRCULAR SECTION Spiral grooving Cutter Rotary Pattern guide;

Known specimens:

None known

Drawings:

Drawing page 1

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Drawing page 2

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Drawing page 3

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Drawing page 4

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