US29672A - Improvement in the manufacture of leather-paper stock - Google Patents
Improvement in the manufacture of leather-paper stock Download PDFInfo
- Publication number
- US29672A US29672A US29672DA US29672A US 29672 A US29672 A US 29672A US 29672D A US29672D A US 29672DA US 29672 A US29672 A US 29672A
- Authority
- US
- United States
- Prior art keywords
- leather
- manufacture
- improvement
- stock
- paper stock
- 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
- 238000004519 manufacturing process Methods 0.000 title description 16
- 239000010985 leather Substances 0.000 description 14
- 239000002649 leather substitute Substances 0.000 description 10
- 239000012535 impurity Substances 0.000 description 8
- 239000004519 grease Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 240000000218 Cannabis sativa Species 0.000 description 2
- 240000000491 Corchorus aestuans Species 0.000 description 2
- 235000011777 Corchorus aestuans Nutrition 0.000 description 2
- 235000010862 Corchorus capsularis Nutrition 0.000 description 2
- 210000003491 Skin Anatomy 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 235000012765 hemp Nutrition 0.000 description 2
- 235000012766 marijuana Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C3/00—Treatment of animal material, e.g. chemical scouring of wool
Definitions
- Our invention has for its object to manufacture artificial leather out of scraps and waste clippings of leather, and to employ for this purpose machinery heretofore used in the manufacture of paper.
- ⁇ Ve take tanners skivings, or scraps from bootand shoe manufactories, or both combined
- the article thus produced has this advantage, among others, that it may be made ofany desired thickness or hardness suited for the work for which it is intended, while the ordinary leather varies so muchin both these respects that a considerable amount of it is wasted, particularly in cutting-out such articles as boots and shoes.
- the above artificial leather may be finished with a soft surface, or by calendering, according to the uses to which it is to be applied.
- EPHRAIM OUSHMAN JOHN R. GUSHMAN. In presence of- EPHRAIM OUsHMAN, J r., M. B. OUsHMAN.
Description
UNITED STATES PATENT OFFICE.
EPHRAIM GUSHMAN AND JOHN R. GUSHMAN, OF AMHERST, MASS.
IMPROVEMENT IN THE MANUFACTURE OF LEATHER-PAPER STOCK.
Specification forming part of Letters Patent No. 29,672, dated August 21, 1860.
To all whom it may concern:
Be it known that we, EPHRAIM GUSHMAN and Joan E. OUsHMAN, of Amherst, in the county of Hampshire and State of Massachusetts, have invented certain new and useful Improvements in the Manufacture of Artificial Leather, of which the following is afull, clear, and exact description.
Our invention has for its object to manufacture artificial leather out of scraps and waste clippings of leather, and to employ for this purpose machinery heretofore used in the manufacture of paper.
1n the attempts made to manufacture artificial leatherupon cylinder paper-machines it has been found ditlicult to raise the material from the vat upon the cylinder, the stock slipping back from its surface instead of forming a continuous sheet upon it. We have also discovered that the leather pulp, when prepared sim'pl'y by grinding, soon destroys the felt upon which the sheet of leather is taken off the cylinder. Both of these difliculties we have succeeded, in a great measure, in removing by cleansing the stock of certain impurities which are introduced by the leather scraps employed. Theseimpurities consist chiefiyof the oil used in the manufacture of theleather, which is often accompanied by soap used in dressing certain kinds of skins. To remove these impurities we beat up the stock in an ordinary paper-mill engine and raise the temperature of the contents of the engine by the introduction of hot water or steam,so as to set free the grease, which rises to the top of the mass and is permitted to pass off by the screen or washer.
That others skilled in the art may understand and use our invention, we will proceed to describe the manner in which we have car- 'ried it out.
\Ve take tanners skivings, or scraps from bootand shoe manufactories, or both combined,
, and place them in the ordinary paper-mill enthat a considerable variation from this exact temperature may be made, both above and below. As the beating of the stock proceeds the grease and other impurities set free by the heat rise to the surface of the mass and pass away with the water drawn off by the revolvin g screen or washer, or are skimmed 011' from the surface in the form of scum as it rises. This washing or cleansing of the stock occupies from a half to three-quarters of an hour, or thereabout.
For the purpose of still further increasing the tenacity of the artificial leather, We sometimes add to the stock (while in the engine) a portion--say from fifteen to twenty-five per cent.-ot some fibrous material-such as jute, hemp',or manila waste-which gives to it a greater tenacity and enables the manufactured article better to withstand bending or torsion than when composed exclusively of the beaten leather scraps. We do not, however, consider this addition of fibrous materials to the leather refuse as essential to our process, but only as giving to the article produced a greater tenacity when required for certain uses. When the pulp has been sufficiently reduced in the engine it is carried to the cylinder paper-machine, where it goes through essentially the process employed in the manufacture of paperboard.
The article thus produced has this advantage, among others, that it may be made ofany desired thickness or hardness suited for the work for which it is intended, while the ordinary leather varies so muchin both these respects that a considerable amount of it is wasted, particularly in cutting-out such articles as boots and shoes.
The above artificial leather may be finished with a soft surface, or by calendering, according to the uses to which it is to be applied.
What we claim as our invention, and desire to secure by Letters Patent, is-
As an improvementin thepreparation of stock for making artificial leather, heating the stock while it is in the beating-engine and removing the impurities as they rise,as set forth,for the purpose specified.
EPHRAIM OUSHMAN. JOHN R. GUSHMAN. In presence of- EPHRAIM OUsHMAN, J r., M. B. OUsHMAN.
Publications (1)
Publication Number | Publication Date |
---|---|
US29672A true US29672A (en) | 1860-08-21 |
Family
ID=2099323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US29672D Expired - Lifetime US29672A (en) | Improvement in the manufacture of leather-paper stock |
Country Status (1)
Country | Link |
---|---|
US (1) | US29672A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4951466A (en) * | 1989-06-12 | 1990-08-28 | General Electric Company | Warm-up control for transmission hydrostatic unit |
US20040177048A1 (en) * | 2003-03-05 | 2004-09-09 | Klug John R. | Method and apparatus for identifying, managing, and controlling communications |
-
0
- US US29672D patent/US29672A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4951466A (en) * | 1989-06-12 | 1990-08-28 | General Electric Company | Warm-up control for transmission hydrostatic unit |
US20040177048A1 (en) * | 2003-03-05 | 2004-09-09 | Klug John R. | Method and apparatus for identifying, managing, and controlling communications |
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