Patent information:

Patent:Utility 1,640,815
Patented:August 30, 1927
Applied:February 17, 1922
Title:Insulator
Description:Knob - self-tying with side projections to crimp wire and hold it.
Category:Knob
Assigned to: 

Patentee Information:

BROOKMAN, Horace D. East Liverpool, OH

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:166RINSULATORS With insulator-supporting or attaching means Support penetrating Through aperture, penetrating element clamped;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:175INSULATORS With conductor holding means Insulator structure Self-retaining;

Known specimens:

Number:Specimen known

Drawings:

Drawing page 1

Page 1