US236559A - And isaac dobson - Google Patents
And isaac dobson Download PDFInfo
- Publication number
- US236559A US236559A US236559DA US236559A US 236559 A US236559 A US 236559A US 236559D A US236559D A US 236559DA US 236559 A US236559 A US 236559A
- Authority
- US
- United States
- Prior art keywords
- hides
- dobson
- isaac
- tanning
- bath
- 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 description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 10
- 239000003517 fume Substances 0.000 description 8
- 210000003491 Skin Anatomy 0.000 description 6
- 239000005864 Sulphur Substances 0.000 description 6
- 239000012267 brine Substances 0.000 description 6
- 239000010985 leather Substances 0.000 description 6
- 241001313207 Gonepteryx rhamni Species 0.000 description 4
- 238000010009 beating Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000001771 impaired Effects 0.000 description 4
- 240000006523 Abies balsamea Species 0.000 description 2
- 235000007173 Abies balsamea Nutrition 0.000 description 2
- 206010022114 Injury Diseases 0.000 description 2
- 235000016976 Quercus macrolepis Nutrition 0.000 description 2
- 244000305267 Quercus macrolepis Species 0.000 description 2
- 210000002700 Urine Anatomy 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 235000020127 ayran Nutrition 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000000630 rising Effects 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
Definitions
- Our invention relates to a new process of tanning hides or skins, which involves comparatively little labor,'time, and expense, and causes less injury to the fiber of the hides than is usually done by the ordinary tanning process and mode of manipulation, and the leather produced by the process is also stronger and more durable, and at the same time superior in softness and suppleness.
- a green hide for the tanning process proper In order to prepare a green hide for the tanning process proper, it is first cleansed and limed for the purpose of removing the hair, then washed, fleshed, and shaved in the usual way. A bath is then prepared to receive the hides. It is formed of a mixture of two liquids, brine and tanning extract--that is to say, to a saturated aqueous solution of common salt we add a strong infusion of oak or hemlock bark in about the proportion of three gallons of the latter to two hundred and forty gallons of the former. This ratio may be 0 varied according to the thickness of the hides or other conditions.
- the hides are immersed in such bath, and usually allowed to remain about five or ten days, the time being varied somewhat, according to the thickness of the 3 5 hides.
- the first day of this period the hides are drawn-i. 6., raised and turned or changed in position-two or three times, and about three gallons of fresh tanning extract are added to replenish the strength of the bath.
- 4o hides are also drawn two or three times on brimstone is then placed in the compartment and set on fire, the fumes rising and filling all parts of the vacant space, and passing in contact with both sides of the hides and permeating the pores.
- the hides are allowed to remain in said compartment and thus immersed in the brimstone fumes from twelve to twenty- 5 5 four hours, according to the size or thickness of the hidesusually twelve hours will suffice.
- the hides are then taken from the compartment, placed ona table, and scoured lightly for the purpose of cleansing them. They are then ready to be oiled, stuffed, or dubbed, and finished, which may be done in the usual way.
- This action of the sulphur is, of course, chiefly valuablein producing the desired softness and flexibility without any sort of mechanical manipulation, (rubbing, beating, &c.,) such as is usually relied on for the purpose.
- mechanical treatment not only involves additional and increased expense, but, what is most objectionable, strains, ruptures, or breaks the fibers, so that the firmness, strength, and durability of the hide are considerably impaired.
- the tan extract increases the solidity and firmness of the leather, and deepens its 5 color, and assists in preventing decay.
Description
Thurman STATES PATENT urine.
ROBERT F. DOBSON, OF DARLINGTON, WISCONSIN, AND ISAAC DOBSON, OF
LINCOLN, NEBRASKA.
TANNING HIDES.
SPECIFICATION forming part of Letters Patent No. 236,559, dated January 11, 1881.
Application filed July 10, 1880. (No model.)
To all whom it may concern:
Be it known that we, ROBERT F. DoBsoN, of Darlington, La Fayette county, \Visconsin, and ISAAC DOBSON, of Lincoln, Lancaster county, Nebraska, have invented a new and useful Improvement in Tanning Hides; and we do hereby declare that the following is a full, clear, and exact description of the same.
Our invention relates to a new process of tanning hides or skins, which involves comparatively little labor,'time, and expense, and causes less injury to the fiber of the hides than is usually done by the ordinary tanning process and mode of manipulation, and the leather produced by the process is also stronger and more durable, and at the same time superior in softness and suppleness.
In order to prepare a green hide for the tanning process proper, it is first cleansed and limed for the purpose of removing the hair, then washed, fleshed, and shaved in the usual way. A bath is then prepared to receive the hides. It is formed of a mixture of two liquids, brine and tanning extract--that is to say, to a saturated aqueous solution of common salt we add a strong infusion of oak or hemlock bark in about the proportion of three gallons of the latter to two hundred and forty gallons of the former. This ratio may be 0 varied according to the thickness of the hides or other conditions. The hides are immersed in such bath, and usually allowed to remain about five or ten days, the time being varied somewhat, according to the thickness of the 3 5 hides. The first day of this period the hides are drawn-i. 6., raised and turned or changed in position-two or three times, and about three gallons of fresh tanning extract are added to replenish the strength of the bath. The
4o hides are also drawn two or three times on brimstone is then placed in the compartment and set on fire, the fumes rising and filling all parts of the vacant space, and passing in contact with both sides of the hides and permeating the pores. The hides are allowed to remain in said compartment and thus immersed in the brimstone fumes from twelve to twenty- 5 5 four hours, according to the size or thickness of the hidesusually twelve hours will suffice. The hides are then taken from the compartment, placed ona table, and scoured lightly for the purpose of cleansing them. They are then ready to be oiled, stuffed, or dubbed, and finished, which may be done in the usual way.
Skins intended for use as robes, furs, &c., are treated as above described, save that liming and unhairing are obviously dispensed with, and the tanning extract may be left out of the bath, since it would discolor the hair.
If hides or skins are treated with brine alone, or sulphur fumes alone, they become hard, stiff, and wrinkled, and cannot be ren- 7o dered soft, supple, and otherwise suitable for use in boots, harness, &c., by any process of currying, heating, or rubbing. Moreover, if this result could be attained, even imperfectly i. 0., by mechanical manipulation or beating the fiberot' the hides would be injured and its tensile strength impaired; but when the hides are treated with both brine and sulphur fumes, (owing to some chemical change we are unable to state,) they become entirely changed in character, being rendered extremely soft and supple, and also plump and white, besides better capable of resisting any tendency to decay. This action of the sulphur is, of course, chiefly valuablein producing the desired softness and flexibility without any sort of mechanical manipulation, (rubbing, beating, &c.,) such as is usually relied on for the purpose. Such mechanical treatment not only involves additional and increased expense, but, what is most objectionable, strains, ruptures, or breaks the fibers, so that the firmness, strength, and durability of the hide are considerably impaired. The tan extract increases the solidity and firmness of the leather, and deepens its 5 color, and assists in preventing decay.
The final result of our process may be stated as follows: We produce, with little labor and l l u" at small expense and in a. short time, an artitherein fortwelve to twenty-fourhours, or more, cle of leather which is superior in pliability as hereinbefore set forth.
strength, and durability. ROBERT F. DOBSON.
What We claim is ISAAC DOBSON. 5 The improved process of tanning hides which Witnesses to signature of Robert F. Dobson consists, first, in immersing them for five or JAs. H. GRAY, ten days, or thereabout, in a bath formed of P. A. ORTON. strong brine and tanningextruct; second,plac- Witnesses to signature of Isaac Dobson: in,g them in an air-tight compartment and sub- .T. P. WALTON,
1o jecting them to the action of fumes of sulphur ADNA DoBsoN.
Publications (1)
Publication Number | Publication Date |
---|---|
US236559A true US236559A (en) | 1881-01-11 |
Family
ID=2305919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US236559D Expired - Lifetime US236559A (en) | And isaac dobson |
Country Status (1)
Country | Link |
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US (1) | US236559A (en) |
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- US US236559D patent/US236559A/en not_active Expired - Lifetime
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