US474944A - Process of making paper-pulp - Google Patents
Process of making paper-pulp Download PDFInfo
- Publication number
- US474944A US474944A US474944DA US474944A US 474944 A US474944 A US 474944A US 474944D A US474944D A US 474944DA US 474944 A US474944 A US 474944A
- Authority
- US
- United States
- Prior art keywords
- pulp
- making paper
- wood
- sticks
- resinous
- 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
- 238000000034 method Methods 0.000 title description 12
- 229920001131 Pulp (paper) Polymers 0.000 title description 10
- 239000002023 wood Substances 0.000 description 16
- LSNNMFCWUKXFEE-UHFFFAOYSA-L Sulphite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 10
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 238000010025 steaming Methods 0.000 description 6
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 4
- 235000011613 Pinus brutia Nutrition 0.000 description 4
- 241000018646 Pinus brutia Species 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 241000218657 Picea Species 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
Definitions
- the object of my invention is to manufacture paper-pulp from pine and other resinous Wood by a process involving the use of sulphit gtli me or similar sulphite.
- the steam-box is provided with openings for the ingress and egress 'of steam, and the temperature may vary from 80 to 280 Fahrenheit. It should not be above 280, as it would then discolor the fiber. When a temperature approximating 280 is used, only three or four hours are required to remove the resinous matter. If a temperature as low as 80 be employed, several days are requlred. After the wood is steamed it is removed from the steam box or boiler and allowed to cool. In cooling it dries quickly, as the heat is given 01f. When out up into disks or chips, the Wood is treated in a digesterin the usual way.
- the herein-described process of making paper-pulp from resinous woods which consists in steaming or steeping sticks of Wood to remove the resin therefrom, cutting the sticks into disks or chips, and subjectingthem to the action of a sulphite liquor in a digester.
Landscapes
- Paper (AREA)
Description
UNITED STATES PATENT OFFICE.
NORMAN H. BROKAVV, OF KAUKAUNA, WVISCONSIN.
PROCESS OF MAKING PAPER-PULP.
SPECIFICATION forming part of Letters Patent No. 474,944, dated May 17, 1892.
' Application filed April 11 ]891. Serial No. 388,589. (No specimens.)
To all whom it may concern.-
Be it known that I, NORMAN H. BROKAW, a citizen of the United States, residing at Kaukauna, in the county of Outagamieand State of Wisconsin, have invented certain new and useful Improvements in Processes of Making Paper-Pulp, ofwhich the following is a specification.
The object of my invention is to manufacture paper-pulp from pine and other resinous Wood by a process involving the use of sulphit gtli me or similar sulphite.
In carrying out my improvements I take pine or other resinous wood, cut it into sticks of con venient size for handliu gsay fourfeet, or thereaboutand place the sticks in a steam box or vessel, where, by steaming or steeping it, I dissolve the resin, pitch, and tarry matter and separate it from the fiber. The sticks of Wood thus freed from resin, &c., are removed from the steam-box, cooled, and dried, and then cut into disks or chips of suitable size for treatment in a digestcr of ordinary construction, where the Wood is converted into pulp or cellulose under the influence of bisulphite of lime or similar sulphite in the usual way. 1
By my process I can produce cellulose from resinous woods of as good a commercial quality as that produced from spruce or other woods heretofore used.
The steam-box is provided with openings for the ingress and egress 'of steam, and the temperature may vary from 80 to 280 Fahrenheit. It should not be above 280, as it would then discolor the fiber. When a temperature approximating 280 is used, only three or four hours are required to remove the resinous matter. If a temperature as low as 80 be employed, several days are requlred. After the wood is steamed it is removed from the steam box or boiler and allowed to cool. In cooling it dries quickly, as the heat is given 01f. When out up into disks or chips, the Wood is treated in a digesterin the usual way.
I claim as my invention- 1. The herein-described process of making paper-pulp from resinous woods, which consists in steaming or steeping sticks of Wood to remove the resin therefrom, cutting the sticks into disks or chips, and subjectingthem to the action of a sulphite liquor in a digester.
2. The herein-described process of making paper-pulp from resinous Woods, which consists in steaming or steeping sticks of wood to remove the resin therefrom, then cooling and drying the sticks, then cutting them into disks or chips, and then charging them into a digester and treating them with a sulphite solution.
In testimony whereof I have hereunto subscribed my name.
NORMAN H. BROKAW.
Witnesses:
GEORGE W. FARGO, J r., F. A. TOWSLEY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US474944A true US474944A (en) | 1892-05-17 |
Family
ID=2543801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US474944D Expired - Lifetime US474944A (en) | Process of making paper-pulp |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US474944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990008278A1 (en) * | 1989-01-10 | 1990-07-26 | Kemp Development Corporation | Ball valve |
-
0
- US US474944D patent/US474944A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990008278A1 (en) * | 1989-01-10 | 1990-07-26 | Kemp Development Corporation | Ball valve |
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