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| All Patents in class 173/157 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 962,717 | Jun. 28, 1910 | V.J. O'Brien | Valve for Hammer Drills | |
| 1,178,892 | Apr. 11, 1916 | D.S. Waugh | Rock Drill | ||
 | 1,252,375 | Jan. 01, 1918 | G.H. Gilman | Drilling Apparatus | |
 | 1,481,642 | Jan. 22, 1924 | F.A. Jimerson | Combination riveter | |