US Patent: 5,561X
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| Dressing Hemp and Flax
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Patentees:
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| Horace L. Barnum (exact or similar names) - Washington, DC |
| Matthew Stevenson (exact or similar names) - Cambridge, Washington County, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jul. 08, 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.
“For a machine for Dressing Hemp and Flax; Horace L. Barnum, and Matthew Stevenson, M. D. The former of Washington city, D. C., the latter of Cambridge, Washington county, New York, July 8.
This, like most of the breaking machines for hemp and flax, is to operate by fluted rollers, mashing into each other. A large iron cog wheel is made to revolve by any suitable means. The teeth of this wheel drive pinions upon the ends of rollers which are placed around it, so as to embrace about three-fourths of its circumference. In the drawing which accompanies the specification, twelve rollers are represented, one side being left free to supply and deliver the hemp.
The rollers above-described stand at a small distance from each other, and are surrounded with another set of fluted rollers. The gudgeons of these exterior rollers are placed so as to stand exactly opposite to the spaces between the interior rollers, so that the flutes of one exterior may mash into those of two interior rollers. This, where there are twelve of the latter, will, of course, require eleven of the former.
There is a feeding apron to supply the hemp to be broken, which is placed opposite to the upper pair of rollers, and a receiving cloth, upon which it is delivered from the lower pair. In passing between the two rows of rollers, the hemp or flax receives an undulating motion, being acted upon twice by each of the rollers, in consequence of each mashing into two others. This, it is said, gives a decided advantage to the machine.
The gudgeons of the exterior rollers work in slots, so that they may be borne up against the interior, by means of springs, weights, or pulleys, or by a weighted lever, the latter being preferred, as it is readily graduated to any desired pressure.
The patentees claim, " the application of the moving power, applied to fluted, or other rollers, for the purpose exemplified, or for any other purpose to which it may be applicable.
The disposition of the fluted, or other rollers, without limiting their dimensions, or without confining themselves to any number of rollers, or any particular mode of gearing them.”
The mode of applying the lever, or pulley, to give the pressure."
Journal of the Franklin Institute Vol. 7, Oct. 1829 pg. 252
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