Patent information:

Patent:Utility 8,418
Patented:October 14, 1851
Applied:
Title:Improvement in Insulators for Telegraph Wires
Description:Metal or cast iron insulator with cupped dry area at bottom. Glass poured in with a conductor supporting iron rod embedded in the glass, and the cupped is coated or lined with glass, porcelain, or enamel. The bottom skirt is slanted inward 45 degrees to p
Category:Metal
Assigned to: 

Patentee Information:

BATCHELDER, John M. Cambridge, MA

Class and subclass information:

Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:194INSULATORS With terminal elements Pin type;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:209INSULATORS Sectional, multi-part, composite, or coated;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:210INSULATORS Sectional, multi-part, composite, or coated Pin socket type;
Class:174ELECTRICITY: CONDUCTORS AND INSULATORS
Subclass:211INSULATORS With moisture or dirt removing or shedding;

Known specimens:

Number:U 983
Number:U 984

Drawings:

Drawing page 1

Page 1