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| All Patents in class 279/122 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 489,936 | Jan. 17, 1893 | C.M. Conradson | Rod Gripping Device | ||
| 509,039 | Nov. 21, 1893 | L. Kirchenbauer | Bolt Threader | ||
| 790,656 | May 23, 1905 | J. Pearson | Automatic Chuck | ||
 | 890,848 | Jun. 16, 1908 | E.S. Mummert, J.O. Dixon | Screw Threading Machine | |
 | 1,117,241 | Nov. 17, 1914 | W.L. Procunier | Bit and tap chuck | |