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| Patents for William Donaldson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 78,938 | Jun. 16, 1868 | W. Donaldson | Improvement in machines for making bungs for casks | |
| 197,616 | Nov. 27, 1877 | W. Donaldson | Lathe for Turning Pottery Ware | ||
| 577,160 | Feb. 16, 1897 | W. Donaldson | Gas Motor | ||
| 615,146 | Nov. 29, 1898 | W. Donaldson | Lathe | ||
 | 942,185 | Dec. 07, 1909 | J.C. Pflanzer | Double back gearing | |