Patent information:
| Patent: | Utility 326,268 |
| Patented: | May 3, 1887 |
| Applied: | October 28, 1886 |
| Title: | Machine for Turning Insulator Pins |
| Description: | Machine for cutting the screw thread on wooden pins (missing the 4th page) |
| Category: | Pin |
| Assigned to: |
Patentee Information:
| FROST, Lewis D. | Minneapolis, MN |
Class and subclass information:
| Class: | 142 | WOOD TURNING |
| Subclass: | 35 | CIRCULAR SECTION; Spiral grooving; Cutter; Chisel; |
Known specimens:
| None known |
Drawings:
Page 1 |
Page 2 |