Patent information:
Patent: | Utility 884,142 |
Patented: | April 7, 1908 |
Applied: | November 2, 1906 |
Title: | Insulator |
Description: | Cylindrical insulator with spiraling ribs to screw insulator into crossarm, center groove to hold line wire, external grooves to carry water away and drip points or serrations to allow water to drip down |
Category: | Crossarm |
Assigned to: | |
Patentee Information:
Class and subclass information:
Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
Subclass: | 168 | INSULATORS; With conductor holding means; |
Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
Subclass: | 173 | INSULATORS; With conductor holding means; Insulator embracing; Tie wires; |
Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
Subclass: | 175 | INSULATORS; With conductor holding means; Insulator structure; Self-retaining; |
Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
Subclass: | 211 | INSULATORS; With moisture or dirt removing or shedding; |
Known specimens:
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Drawings:
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