US Patent: 8,864X
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Threshing machine
Thrashing machine
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Patentee:
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| William Laighton (exact or similar names) - Portsmouth, Rockingham County, NH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jun. 06, 1835 |
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Joel Havens
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Description: |
| Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2000 of the almost 10000 documents were recovered.
Little is known about this patent. Only the patent drawing is available. This patent is in the database for reference only.
This patent is taken for an improvement on that of November 17th, 1834, described Vol. 15, p. 397. The claim now made is very similar to that in the original patent, and does not in any manner allude to new improvements; the patentee says, "the principles I claim as my invention, are the conical ribbed cylinder, and the semicircular ribbed cradle conforming thereto, by which, from the angular position with which they come into action, the hull of the grain is split without injury to the seed." As these principles made a part of the first patent, the claim cannot be sustained under the present one or a man might renew his patent forever. The claim, to have been valid, should have pointed to those improvements only which the patentee has made since November 1834.
Journal of the Franklin Institute Vol xvii 1836 pg 38 |
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