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| Patents for Calvin J. Weld | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 149,802 | Apr. 14, 1874 | J.W. Smith, C.J. Weld | Improvement in water-wheels | |
 | 273,650 | Mar. 06, 1883 | C.J. Weld | Shingle-machine | |
 | CA-16,804 | May 04, 1883 | C.J. Weld | Improvement in shingle-machines | |
 | CA-17,549 | Aug. 28, 1883 | C.J. Weld | Water wheel | |