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US Patent: 80,483
Improvement in Machines for Jointing Staves
Patentees:
Britain Holmes - Buffalo, NY
Edward Holmes - Buffalo, NY

USPTO Classifications:
147/35

Tool Categories:
woodworking machines : specialty machines : barrel making machines
trade specific : cooper

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Jul. 28, 1868

Patent Pictures:
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"Vintage Machinery" entry for E. & B. Holmes
Description:
The nature of this invention consists, first, in providing the lower clamp-bar with several series of transverse ribs of equal depth but varying length, each piece being hinged at its center independently of the others, in combination with a transverse curvature in the upper clamp-bar, so that staves of different width will be held at different angles, as will be more fully described, in order to present them to the cutters in a manner to give them the required bevel and bilge due to their widths; second, in two feed-arms or eveners supported upon a rock-shaft and pressed against the underside of the upper clamp-bar by means of a weighted arm attached to the said rock-shaft for the purpose of feeding the staves evenly to the action of the knives in a manner to make the ends of the staves of equal width; third, in the combination of a friction-clutch, weighted lever, and pedal, by which means the gearing which operates the clamp may be stopped instantaneously whenever required; fourth, in the combination and arrangement of a rock-shaft carrying pinions or segments upon each end, which gear with stationary racks in such-manner that by taking hold of an arm connected to said shaft the same, may be revolved for the purpose of operating the clamp, and thereby feeding the staves to the action of the cutters.

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