US147903A - Improvement in thick papers - Google Patents
Improvement in thick papers Download PDFInfo
- Publication number
- US147903A US147903A US147903DA US147903A US 147903 A US147903 A US 147903A US 147903D A US147903D A US 147903DA US 147903 A US147903 A US 147903A
- Authority
- US
- United States
- Prior art keywords
- paper
- cylinder
- improvement
- webs
- web
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000004642 transportation engineering Methods 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
Definitions
- My invention has for its object to produce a thick cheap paper for use as a floor-covering in place of oil-cloth and carpeting, as a coverin g for the interior walls and ceilings of buildings in place of laths and plastering, and as a soft pliable wrapping or express paper to protect machinery, furniture, and other heavy articles during transportation.
- the invention consists in a new article of manufacture, to wit, a thick paper or board laid up in webs in such a manner that the fine surfaces shall be upon the outside, and the coarse surfaces within the body of the paper, as I will now proceed to describe.
- Thick paper made upon a cylinder-machine in continuous lengths, from straw or rags, or from a combination of both, is formed with two surfaces of different degrees of fineness, the surface next the cylinder-mold being the coarsest.
- the water within the cylinder is exhausted somewhat, so that its level shall be below the level of the pulp, in which the cylinder rotates.
- the water from the vat, rushing into the cylinder through its wire covering carries with it, first, the long and coarser fibers of the pulp, and causes them to adhere to the wire covering.
- my invention I join with the web of paper thus formed one or more additional webs, in such a manner that the surfaces of the paper or sheet thus built up shall be formed by the fine sides of the two webs, or of the two outer webs, where more than two of the latter are 7 used.
- the process of forming my improved paper with two webs For convenience of description, I will describe the process of forming my improved paper with two webs.
- the first web being laid upon the felt with its coarse side outward, as above described, the second web is carried to and laid upon it in the following manner:
- the. second web passes between two wet press-rolls, arranged so that the upper side of the felt shall pass between them.
- the upper one of these rolls acting as a kind of second coucher, takes the web from the felt, and carries it upward, from which point it is directed back over the first coucher to the first cylinder, and laid, with its fine side outward, upon the first web, or th 0 one formed by the first cylinder.
- the secondary coucher of the second cylinder serves to turn the second web, so that it shall be laid on the first web with its fine side 'outward-in other words, the two webs are laid together, to form one continuous sheet of thick paper, with the fine surfaces of the two outermost.
- WVhat I do claim is As a new article of manufacture, thick paper or board consisting of two or more webs having their fine sides outward and their coarse sides withinthe body of the paper, substantially as described, for the purposes specified.
Description
STATES PATENT OFFIon.
JUDD M. COBB, OF BELOIT, WISCONSIN.
IMPROVEMENT -IN THICK PAPERS.
Specification forming part of Letters Patent No. 147,903, dated February 24, 1874; application filed July 17, 1873.
To all whom it may concern:
Be itknown that I, J UDD M. GOBB, of Beloit, in the county of Rock and State of Nisconsin, have invented a new and useful Improvement in Thick Paper; and I do hereby declare the following to be a full, clear, and exact description thereof, which will enable others skilled in the art to which my invention appertains to make and use the same.
My invention has for its object to produce a thick cheap paper for use as a floor-covering in place of oil-cloth and carpeting, as a coverin g for the interior walls and ceilings of buildings in place of laths and plastering, and as a soft pliable wrapping or express paper to protect machinery, furniture, and other heavy articles during transportation. To this end the invention consists in a new article of manufacture, to wit, a thick paper or board laid up in webs in such a manner that the fine surfaces shall be upon the outside, and the coarse surfaces within the body of the paper, as I will now proceed to describe.
Thick paper made upon a cylinder-machine, in continuous lengths, from straw or rags, or from a combination of both, is formed with two surfaces of different degrees of fineness, the surface next the cylinder-mold being the coarsest. In the process of manufacture, the water within the cylinder is exhausted somewhat, so that its level shall be below the level of the pulp, in which the cylinder rotates. The water from the vat, rushing into the cylinder through its wire covering, carries with it, first, the long and coarser fibers of the pulp, and causes them to adhere to the wire covering. This forms a coating of coarse fibers upon the cylinder, and decreases the force of the water in its passage to the interior, so that it will carry only the finer and 1i gh ter particles against the coarser ones. This continues until the water can no longer attract or carry the finest particles. As the cylinder rotates, the coucher takes off the web of paper, and delivers it to the felt with the fine surface next the latter, and the coarse surface upon the outside. In
my invention, I join with the web of paper thus formed one or more additional webs, in such a manner that the surfaces of the paper or sheet thus built up shall be formed by the fine sides of the two webs, or of the two outer webs, where more than two of the latter are 7 used.
For convenience of description, I will describe the process of forming my improved paper with two webs. The first web being laid upon the felt with its coarse side outward, as above described, the second web is carried to and laid upon it in the following manner: Immediately after being delivered to the felt of a second cylinder by its coucher, the. second web passes between two wet press-rolls, arranged so that the upper side of the felt shall pass between them. The upper one of these rolls, acting as a kind of second coucher, takes the web from the felt, and carries it upward, from which point it is directed back over the first coucher to the first cylinder, and laid, with its fine side outward, upon the first web, or th 0 one formed by the first cylinder. The two webs thus united then continue on to the ordinary wet and dry press-rolls. By this arran gement the secondary coucher of the second cylinder serves to turn the second web, so that it shall be laid on the first web with its fine side 'outward-in other words, the two webs are laid together, to form one continuous sheet of thick paper, with the fine surfaces of the two outermost.
I am aware that thick paper has been made by running several distinct webs upon one another; but this I do not claim.
WVhat I do claim is As a new article of manufacture, thick paper or board consisting of two or more webs having their fine sides outward and their coarse sides withinthe body of the paper, substantially as described, for the purposes specified.
JUDD M. COBB.
Witnesses:
MELLVILLE Cannon, E. A; ELLSWORTII.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US147903A true US147903A (en) | 1874-02-24 |
Family
ID=2217316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US147903D Expired - Lifetime US147903A (en) | Improvement in thick papers |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US147903A (en) |
-
0
- US US147903D patent/US147903A/en not_active Expired - Lifetime
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