Patent information:

Patent:Utility 255,800
Patented:April 4, 1882
Applied:July 2, 1881
Title:Insulator for Electrical Conductors
Description:Pin hole with spiral slot to receive pin with side knob
Category:Pin
Assigned to: 

Patentee Information:

LEWIS, Albert C. Brooklyn, NY

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:165INSULATORS With insulator-supporting or attaching means Support penetrating Penetrating element socketed in insulator;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:202INSULATORS With terminal elements Pin type Screw or bayonet type;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1