US126041A - Improvement in machines for grinding wood-pulp for paper - Google Patents
Improvement in machines for grinding wood-pulp for paper Download PDFInfo
- Publication number
- US126041A US126041A US126041DA US126041A US 126041 A US126041 A US 126041A US 126041D A US126041D A US 126041DA US 126041 A US126041 A US 126041A
- Authority
- US
- United States
- Prior art keywords
- pulp
- machines
- improvement
- paper
- wood
- 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 3
- 239000000203 mixture Substances 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 241001263323 Maclura tinctoria Species 0.000 description 2
- 239000002969 artificial stone Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/22—Feed or discharge means
- B02C18/2225—Feed means
- B02C18/2283—Feed means using rollers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
- D21D1/30—Disc mills
Definitions
- natu ral stones can be selected for pulpgrinding machines which will wear uniformly.
- a properly-made artificial stone will always March 1.5, 1870.
- oxide of magnesium as a base, and mix with it, in a dry state, the coarse powder above mentioned, substantially in the manner indicated in the first of the above-named patents, and afterward moisten the mixture, as in said patent directed, with chloride of magnesium or with any ofthe equivalents thereof, as set forth in the last of the above named patents; or the oxide and chloride of zinc may be substituted for the oxide and chloride of magnesium, in which case we mix with the powdered stone in a dry state from about ten to about twenty per cent.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Paper (AREA)
Description
UNrrE TATES JOSIAH S. ELLIOTT, OF CHELSEA, AND JOHN F. WOOD, OF EVERETT, MASS.
IMPROVEMENT IN MACHINES FOR GRINDING WOOD-PULP FOR PAPER, &c.
Specification forming part of Letters Patent No. 126,041, dated April 23, 1872.
SPECIFICATION.
To all whom it may concern:
Be it known that we, JOSIAH S. ELLIOTT, of Chelsea, in the State of Massachusetts, and JOHN F. WOOD, of Everett, in said State, have invented an Improvement in Machines for Grinding Wood-Pulp; and we do hereby declare the following to be a full and correct deseription of the same.
It is with considerable difliculty that natu ral stones can be selected for pulpgrinding machines which will wear uniformly. A properly-made artificial stone, however, will always March 1.5, 1870. We use oxide of magnesium as a base, and mix with it, in a dry state, the coarse powder above mentioned, substantially in the manner indicated in the first of the above-named patents, and afterward moisten the mixture, as in said patent directed, with chloride of magnesium or with any ofthe equivalents thereof, as set forth in the last of the above named patents; or the oxide and chloride of zinc may be substituted for the oxide and chloride of magnesium, in which case we mix with the powdered stone in a dry state from about ten to about twenty per cent. in weight of the oxide of zinc, and moisten the mixture with the chloride of zinc until it will hold the shape given it by compressing in the hand. This mixture or cement may then be molded or tamped, sufficient force being used, to the form of natural stones which are frequently used in pulp-grindin g machines; or it may be applied by a trowel, or by tamping, to the roughened surface of metallic cylinders or cones sometimes used in such machines, the grindingsurface thus prepared and applied being much more uniform in wear and much more durable than roughened metallic grinders or natural stones; and not only are such grinding instruments durable and uniform in wear, but, by regulating the size of the grains of powder to which the emery or other stone is reduced, as aforesaid, mgrinding instru ment may be adapted to the kind of wood to be reduced to pulp and do away with the necessity of straining the pulp, more or less.
We claim-- p The use of an artificial stone in a pulp-grinding machine to grind the wood, prepared and applied substantially as described.
The above specification of our said invention signed and witnessed at Boston this 30th day of March, A. D. 1872.
J. S. ELLIOTT. JNO. F. WOOD. Witnesses:
WILLIAM W. SWAN, JOHN F. BRENNAN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US126041A true US126041A (en) | 1872-04-23 |
Family
ID=2195468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US126041D Expired - Lifetime US126041A (en) | Improvement in machines for grinding wood-pulp for paper |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US126041A (en) |
-
0
- US US126041D patent/US126041A/en not_active Expired - Lifetime
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