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| Patents for R. & W. Sandiford | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 264,107 | Sep. 12, 1882 | W. Sandiford | Ratchet-drill | |
 | 267,462 | Nov. 14, 1882 | W. Sandiford | Ratchet-drill | |
 | CA-18,110 | Nov. 17, 1883 | W. Sandiford | Improvements in ratchet-drills | |