Patent information:
| Patent: | Utility 215,516 |
| Patented: | May 20, 1879 |
| Applied: | April 21, 1879 |
| Title: | Improvement in Devices for Attaching Plungers to Glass Presses |
| Description: | Means of attaching a plunger to a glass press using a chuck. (This is known as the ""Gill Chuck"" and may have been used in insulator production, it is not known if Gill was employed by Hemingray at the time of this patent.) |
| Category: | Plunger |
| Assigned to: |
Patentee Information:
| GILL, James G. | Pittsburg, PA |
Class and subclass information:
| Class: | 65 | GLASS MANUFACTURING |
| Subclass: | 305 | PRESS MOLDING MACHINE; |
| Class: | 403 | JOINTS AND CONNECTIONS |
| Subclass: | 230 | ROD END TO TRANSVERSE SIDE OF MEMBER; |
Known specimens:
| None known |
Drawings:
Page 1 |