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| Patents for Roswell Hart | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 188,939 | Mar. 27, 1877 | J.A. Peoples | Improvement in machines for splitting hoop-poles | |
 | 192,874 | Jul. 10, 1877 | J.A. Peoples | Improvement in machines for splitting hoop-poles | |
 | 194,842 | Sep. 04, 1877 | J.A. Peoples | Improvement in hoop-machines | |
 | 197,052 | Nov. 13, 1877 | J.A. Peoples | Improvement in machines for splitting hoop-poles | |