CA Patent: CA-276,291
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| Broaching machine
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Patentees:
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| Hiram Dyson Croft (exact or similar names) - Springfield, MA |
| Julian Leigh Perkins (exact or similar names) - West Springfield, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Dec. 13, 1927 |
CIPO Data
Espacenet patent
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Jeff Joslin
Vintage Machinery entry for Perkins Machine Gear Co.
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Description: |
| The patent specification mentions hinge making as an application for which their machine is suited. |
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