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 prevent water from splashing up inside wetting the interior surface. This feature was utilized in U-983 and U-984 made by the U. S. Pottery Co. in Bennington, VT. |
| Category: | Metal |
| Assigned to: |
Patentee Information:
| BATCHELDER, John M. | Cambridge, MA |
Class and subclass information:
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 194 | INSULATORS; With terminal elements; Pin type; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 209 | INSULATORS; Sectional, multi-part, composite, or coated; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 210 | INSULATORS; Sectional, multi-part, composite, or coated; Pin socket type; |
| Class: | 174 | ELECTRICITY: CONDUCTORS AND INSULATORS |
| Subclass: | 211 | INSULATORS; With moisture or dirt removing or shedding; |
Known specimens:
| Number: | U 983 |
| Number: | U 984 |
Drawings:
Page 1 |