Patent information:
| Patent: | Utility 316,812 |
| Patented: | April 28, 1885 |
| Applied: | December 18, 1884 |
| Title: | Telegraph Insulator |
| Description: | CD 119, self-tying via projections (347,635 more appropriate) |
| Category: | Insulator |
| Assigned to: | William Brookfield |
Patentee Information:
| O'BRIEN, John | New York, NY |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 175 | INSULATORS; With conductor holding means; Insulator structure; Self-retaining; |
| Class: | 248 | SUPPORTS |
| Subclass: | 49 | PIPE OR CABLE; |
| Class: | 248 | SUPPORTS |
| Subclass: | 69 | PIPE OR CABLE; Brackets; Plural pipe or cable; With bridle ring; |
Known specimens:
| Number: | CD 119 |
Drawings:
Page 1 |