US Patent: 6,615X
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Cards, and Drawing Can Hoops
Iron Hoops to Be Applied to the Bottoms of Card and Drawing Cans
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Patentee:
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| John Butterworth (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jul. 20, 1831 |
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Joel Havens
X-Patents
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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.
“For bending Iron Hoops to be applied to the bottoms of Card and Drawing Cans; John Butterworth, Philadelphia County, Pennsylvania, July 20.
To preserve the tin cans used with carding and spinning machines, their bottoms are to be furnished with iron hoops, the lower edges of which are to be bent inwards so as to form a flanch for sustaining the bottoms of the cans. It is proposed sometimes to tin these hoops, and to attach them to the can by soldering,
To bend the iron hoops, they are to be slipped over round blocks of cast iron, of the proper size. The lower edge of the hoop rests upon a shoulder, and its upper edge stands above the block, over which it is to be bent, either when heated or cold.
The invention claimed is the machine for bending the hoops, and also the soldering them upon the cans.
This mode of bending metallic hoops is so obvious and so common that the only marvel about it is that anyone should think of taking a patent for it.”
Journal of the Franklin Institute, Vol. 9, Jan. 1832 pg. 40
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