| Patents for Joseph H. Hoern |
Patents 1 -
15
of 19
      |
| Number | Title | Classification(s) |
| 1,772,082 | Device for Assembling and Holding Piston Rings for Machining Operations | 279/2.19, 279/2.24, 409/903, 82/169 |
| 1,783,121 | Piston Ring Burr Removing Device | 29/33A, 409/299, 451/333 |
| 1,900,112 | Grinding machine | 451/247 |
| 1,910,767 | Method of making tappets | 123/90.51, 219/76.1, 29/888.43 |
| 1,925,384 | Ring Resawing Machine | 29/33J, 29/38C, 409/197, 409/199, 409/225, 74/820 |
| 2,240,440 | Apparatus for Honing Internal Screw Threads | 451/470 |
| 2,259,640 | Thread Forming Apparatus | 72/88 |
| 2,265,561 | Method of Making Valve Tappets | 123/188.3, 219/93, 220/DIG.29, 29/888.43, 29/888.45 |
| 2,359,477 | Method of Making Hollow Head Valves | 29/520, 29/888.451, 428/34.1, 428/583, 428/586 |
| 2,367,398 | Thread Rolling Apparatus | 72/13.7, 72/88 |
| 2,456,060 | Rotor Grinder | 451/143, 451/147, 451/400, 451/900 |
| 2,540,520 | Machine | 408/180, 82/1.2, 82/17, 82/19 |
| 2,633,777 | Indexing mechanism for station type machines | 188/69, 29/48.50A, 409/221, 74/815 |
| 2,641,146 | Boring and Turning Machine | 125/11.05, 82/1.5 |
| 2,659,961 | Turning and Boring Machine | 29/54 |
