US335466A - Process of making paper-pulp - Google Patents
Process of making paper-pulp Download PDFInfo
- Publication number
- US335466A US335466A US335466DA US335466A US 335466 A US335466 A US 335466A US 335466D A US335466D A US 335466DA US 335466 A US335466 A US 335466A
- Authority
- US
- United States
- Prior art keywords
- pulp
- making paper
- paper
- cooking
- soda
- 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
- 229920001131 Pulp (paper) Polymers 0.000 title description 14
- 238000000034 method Methods 0.000 title description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 20
- 238000010411 cooking Methods 0.000 description 12
- 239000000835 fiber Substances 0.000 description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 description 10
- 235000017550 sodium carbonate Nutrition 0.000 description 10
- 210000001138 Tears Anatomy 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-N Carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 4
- 235000012343 cottonseed oil Nutrition 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 235000019198 oils Nutrition 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 210000000614 Ribs Anatomy 0.000 description 2
- 240000003670 Sesamum indicum Species 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- -1 cotton-seed hulls Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
Definitions
- My invention relates to a process of making paper-pulp from the refuse of hulled cottonseed, which is as follows: I take a charge of the refuse bulls and cook it in a suitable tank or boiler in the presence of soda-ash alone, preferably in the proportion of one hundred of soda-ash to a ton of refuse, and cook the charge from live to six hours, so as to thoroughly reduce the bulls and cut or neutralize the oil. It is then taken out of the cooking-vessel and reduced to pulp of the proper consistency by grinding-disks, which have a series of gradually-reducing ribs that tear and pull the fiber apart without cutting it. I have found by eX perience that the reducing-mill shown in Letters Patent No.
- the pulp is not washed; but when straw-board and other grades of paper are desired the pulp should be run through an agitator and (N0 specimens.)
- the liquor used in cooking the first charge can be used over again by adding a little soda ash when the quantity is used in the proportion above stated.
- paper-pulp has been made from rags, wood, cotton-seed hulls, and other material without cooking. Paper-pulp has also been made by first cooking the stock with steam, then disintegrating or tearing the fiber apart, and, finally, subjecting it to a bleaching process without the contact therewith of any solid bleaching material. Stock has also been treated by cooking in water with carbonate of soda alone, the temperature being gradually raised to the boiling-point.
- My invention differs from those above mentioned in that I treat cotton-seed hulls by cooking in an alkaline solution of soda-ash, that cuts out or neutralizes the oil, the hulls being then reduced to a pulp by means of a grinding mechanism, which tears the fibers apart without cutting.
- ⁇ Vhat I claim as my invention is- The herein described process of making paper-pulp, which consists in cooking cottonseed hulls in a solution of soda-ash, and then grinding the stock, whereby its fibers are torn apart without cutting, substantially as described.
Description
NITED TATES PATENT OFFICE.
FRANCIS J. MCCORMICK, OF DAYTON, OHIO.
PROCESS OF MAKING PAPER-PULP.
SPECIFICATION forming part of Letters Patent No. 335,466, dated February 2, 1886.
A pplicution filed July 16, 1885. Serial No. 171,781.
To all wnom, If Til/(01] concern.-
Be it known that I, FRANCIS J. hIOCORMIOK, of Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in- Processes of Making Paper-Pulp from Cotton-Seed Hulls, of which the following is a specification.
My invention relates to a process of making paper-pulp from the refuse of hulled cottonseed, which is as follows: I take a charge of the refuse bulls and cook it in a suitable tank or boiler in the presence of soda-ash alone, preferably in the proportion of one hundred of soda-ash to a ton of refuse, and cook the charge from live to six hours, so as to thoroughly reduce the bulls and cut or neutralize the oil. It is then taken out of the cooking-vessel and reduced to pulp of the proper consistency by grinding-disks, which have a series of gradually-reducing ribs that tear and pull the fiber apart without cutting it. I have found by eX perience that the reducing-mill shown in Letters Patent No. 259,974, granted Burns and McCormick, June 20, 1882, is the most suitable for the purpose. I introduce a small stream of water into the disks to help carry the pulp through and to prevent clogging of the mill. This water runs out with the pulp. The pulp is then treated in the ordinary Way. It is calendered or run through a wet-machine and mixed with any other known paper-stock, or used alone, according to the quality desired. Other articles which are the chemical equivalent of soda may be used to reduce the hulls. When leather-board paper is desired,
the pulp is not washed; but when straw-board and other grades of paper are desired the pulp should be run through an agitator and (N0 specimens.)
washed, which will sufliciently remove-all the alkali or salts left in the pulp. Rolls might be used instead of disks, provided the corrugations are made to tear instead of cut the fiber. The liquor used in cooking the first charge can be used over again by adding a little soda ash when the quantity is used in the proportion above stated.
Heretofore paper-pulp has been made from rags, wood, cotton-seed hulls, and other material without cooking. Paper-pulp has also been made by first cooking the stock with steam, then disintegrating or tearing the fiber apart, and, finally, subjecting it to a bleaching process without the contact therewith of any solid bleaching material. Stock has also been treated by cooking in water with carbonate of soda alone, the temperature being gradually raised to the boiling-point. My invention differs from those above mentioned in that I treat cotton-seed hulls by cooking in an alkaline solution of soda-ash, that cuts out or neutralizes the oil, the hulls being then reduced to a pulp by means of a grinding mechanism, which tears the fibers apart without cutting.
\Vhat I claim as my invention is- The herein described process of making paper-pulp, which consists in cooking cottonseed hulls in a solution of soda-ash, and then grinding the stock, whereby its fibers are torn apart without cutting, substantially as described.
In testimony whereof I have hereunto set my hand.
FRANCIS J. MCCORMICK.
\Vitnesses:
ROBERT ZAHNER, J NO. S. RoEBUoK, Jr.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US335466A true US335466A (en) | 1886-02-02 |
Family
ID=2404557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US335466D Expired - Lifetime US335466A (en) | Process of making paper-pulp |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US335466A (en) |
-
0
- US US335466D patent/US335466A/en not_active Expired - Lifetime
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