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Description: |
| Listed in A List of Patents Issued by the United States, from 1790 to 1847, 1847, pgs. 86 & 494.
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. No patent drawing is available. This patent is in the database for reference only.
Take any quantity of straw, and boil it in water with salts of ley, pot or pearl ash, in the following proportions. To one hundred and fifteen pounds of straw, add. from fifteen to twenty pounds of the salts of ley, and boil it about thirty minutes, then draw off the water, and put the straw into a common paper engine, to be manufactured like rags into paper.
William Magaw.
The improvement or discovery consists in preparing straw, hay, or other vegetable substances for the manufacturer of paper in the following manner. Take any quantity of straw, hay, or other vegetable substances, and boil it in a solution of salts of ley, pot, or pearl ash, or other alkali, or lime, in the following proportions, viz. To one hundred and fifteen pounds of straw, hay, or other vegetable substance, add from fifteen to twenty pounds of salts of ley, pot, or pearl ash, or other alkali, or lime, and boil them about thirty minutes, or steep the materials in the solution a few days, or until saturated; then draw off the water, and put them into a common engine, to be manufactured into paper like rags.
The discoverer claims as his exclusive improvement or discovery, the materials, and the mode of preparing the straw, hay, or other vegetable substances, so as to render them fit for the manufacture of paper.
By turning to p. 92, vol. 1, the reader will find that Louis Lambert, of Paris, obtained a patent in England for a process similar to the foregoing, in which it is expressly suited that "the straw is then boiled with quick lime in water, for the purpose of extracting the colouring matter, and separating its fibres. Castic potash, soda, or ammonia may be employed for this purpose instead of lime."
The Franklin Journal and Mechanics' Magazine, V5 #6, Jun 1828, pgs. 416-417 |
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