US Patent: 5,422X
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| Manufacture of Coffee Mills
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Patentee:
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| James Carrington (exact or similar names) - Wallingford, New Haven County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Apr. 03, 1829 |
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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 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.
“This mill, as the patentee acknowledges, is similar in its form and structure to those formerly patented by Waterhouse and improved by Wilson. The difference, indeed, is very small, so as really to leave it a matter of doubt, whether there is ground enough upon which to erect a secure patent.
In the former mills, the back was of wood, and the hopper of sheet iron; in the present they are both of cast iron, which change of material is claimed as making a part of the present patent. There is also a collet or washer for the regulating screw, as will be seen by the general claim.
"I do not claim as my invention, the shell and runner, nor any part of Waterhouse's coffee mill, or of Wilson's improved mill, as made before my invention, and now in common use; but I claim as my invention, and as very important improvements on both, the cast iron plate and hopper, and the collet in the plate in aid of the thumb-screw, to regulate the machine. By means of the friction piece, or collet, that screw will hold its place, and not yield to the motion of the crank, or be subject to wear by friction; and the runner, having a more extensive bearing, will run more true, perform its work more perfectly, be less liable to get out of order, and the whole machine being thus made of iron, not only assumes a more elegant form, but is free from shrinking, warping, and other effect of weather; and is in fact much stronger, more durable, and, with the aid of the collet, more exact in its operation."
The fact is, this coffee mill is a very excellent and neat article, and as its cost is probably about the same with the old one, its neatness and durability will be sufficient to recommend it, without appealing to the circuit court for their decision respecting its novelty.”
Journal of the Franklin Institute Vol. 4, Jul. 1829 pgs. 46-47
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