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| Patents for William Hargreaves | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-191,501,774 | Feb. 04, 1916 | W. Hargreaves | Improvements in Apparatus for Electrically Operating Planing Machines and the Like Reciprocating Tools | machine tool controls | |
| GB-191,514,026 | Dec. 04, 1916 | W. Hargreaves | Improvements in Electro-Magnetically Operated Clutches, Particularly Applicable to Reversing Gear for Reciprocating Machines | industrial machine clutches | |