Patent information:

Patent:Utility 1,591,883
Patented:July 6, 1926
Applied:May 27, 1922
Title:Insulator Pin
Description:Steel pin with lag screw and spring for threads
Category:Pin
Assigned to: 

Patentee Information:

PEIRCE, JR., Charles L. Pittsburgh, PA

Class and subclass information:

Class:248SUPPORTS
Subclass:217.4BRACKETS Specially mounted or attached Including support piercing or cutting means Threaded shank;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:203INSULATORS With terminal elements Pin type Screw or bayonet type Strand thread;

Known specimens:

None known

Drawings:

Drawing page 1

Page 1