US Patent: 5,471X
|
| Machine for Sifting
|
|
Patentee:
|
|
| John Nichols (exact or similar names) - Boston, Suffolk County, MA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Granted: |
Apr. 29, 1829 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Joel Havens
|
|
Description: |
| 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.
“Three or more wire sieves, the frames of which form quadrangular boxes, are placed side by side, over a common box, or trough. A horizontal crank shaft, with three or more cranks on it, corresponding with the number of sieves, carry connecting rods, or pitmen, which move the sieves alternately backwards and forwards. This constitutes the whole of the machinery, which will undoubtedly operate very well. Were we desirous of using such a machine, we should even now scarcely think it necessary to buy a right; and had we invented it before the present patent was obtained, we should not have claimed an exclusive privilege; lest, the first wheat fan which we saw might contain a sifter with a crank, or some similar, motion.”
Journal of the Franklin Institute Vol. 5, Aug. 1829 pg. 117
|
|
