US Patent: 5,494X
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Winnowing and threshing grain
A Machine for Thrashing, Smutting, Winnowing, and Screening Grain, Called Davis and Carey's Improved Thrashing Machine
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Patentees:
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| E. P. Davis (exact or similar names) - Riga, Monroe County, NY |
| William Carey (exact or similar names) - Riga, Monroe County, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 11, 1829 |
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Joel Havens
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Description: |
| This patent is listed by some sources as being granted on 11 Jun., 1829.
Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. There are no patent drawings available. This patent is in the database for reference only.
“In general structure this machine is similar to many others, but its particular arrangements could not be shown without a drawing. The thrashing cylinder is to be covered with sheet iron, punched like a grater, with the burs projecting outwards. The hollow segment, opposite to which it revolves, is to be similarly lined; this is to cause it to operate as a smut cleaner. Spikes of two inches in length project from each, for the purpose of thrashing out the grain, which, with the chaff, falls through a screen into the winnowing chamber. A cylinder, provided with spikes, revolves, and removes the straw.
The patentees do not claim the invention of effecting either of the processes by machinery, nor any of the arrangements of parts which may be found in other machines, but only the particular combination by which all are performed in this machine. They claim the covering of the cylinder and segment with sheet iron, to serve as a smut machine, and to protect them from wear. They mount the cylinder on steel points instead of journals, and this they claim. They also claim the screwing of the spikes into the cylinder and segment, instead of driving them; this is to prevent their flying out. The regulating the distance of the cylinder from the segment, by means of screws and springs, instead of wedges, is likewise claimed.”
Journal of the Franklin Institute Vol. 6, Sept. 1829 pgs. 171-172
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