US503987A - Process of tanning - Google Patents
Process of tanning Download PDFInfo
- Publication number
- US503987A US503987A US503987DA US503987A US 503987 A US503987 A US 503987A US 503987D A US503987D A US 503987DA US 503987 A US503987 A US 503987A
- Authority
- US
- United States
- Prior art keywords
- hide
- tanning
- salt
- skin
- grease
- 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 18
- 210000003491 Skin Anatomy 0.000 description 22
- 239000010446 mirabilite Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 14
- 239000004519 grease Substances 0.000 description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 10
- 235000011114 ammonium hydroxide Nutrition 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 239000011780 sodium chloride Substances 0.000 description 8
- 235000002639 sodium chloride Nutrition 0.000 description 8
- 239000010985 leather Substances 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 241000276457 Gadidae Species 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 210000004369 Blood Anatomy 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 235000020127 ayran Nutrition 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000003307 slaughter Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000001117 sulphuric acid Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 238000005303 weighing Methods 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
- C14C1/00—Chemical treatment prior to tanning
- C14C1/02—Curing raw hides
Definitions
- My invention has relation to improvements in the process of tanning.
- the object of my invention is to thoroughly tan the hide without rendering it hard, and thus produce a leather having the qualities of softness and pliability to the maximum; and to this end the invention consists in the improved process hereinafter more fully set forth.
- impurities such as blood, salt, lime, all mineral or organic acids, &c.
- About one-half of the salt is spread over the hide in the first instance, after which said hide is permitted to stand for about twelve hours in order to have the salt effectually absorb all the moisture, and when this time has expired the balance of the Glaubers salt is applied.
- the skins are then again exposed for a predetermined length of time, twelve hours, approximately, for light skins and twenty-four hours for
- the next step is to smooth the hide out upon a table and then treat the same to a composition composed of, preferably, onefourth aqua ammonia to three-fourths of oil or grease preferably unadulterated codfish oil. This is coated upon both sides of the hide by means of a brush.
- a composition composed of, preferably, onefourth aqua ammonia to three-fourths of oil or grease preferably unadulterated codfish oil.
- This is coated upon both sides of the hide by means of a brush.
- the quantity of aqua ammonia should be less than above stated.
- the quantity should be increased.
- the hide is now exposed for drying purposes, and allowed to remain in suspended position until thorough exsicoation takes place, at least two days being required for this purpose.
- the hide is placed in clean water to dissolve any sulphate of ammonia or any of the constituent parts of the Glaubers salt that may remain.
- the skin or hide is then ready for the work generally known to tanners as setting and stuffing, and after such skin or hide is dry, there is no so called staking process necessary, as the skin will remain soft.
- the in soluble fatty compound will remain in the skin and adhere to the fibers severally, closely, and not in a mass, leaving the fibers independent from each other, thus securing a perfect tanning and puttingthe skin in condition to reject water to a great extent.
- theskins or hides may be placed into a solution of common salt and sulphuric acid, commonly styled, the pickle. After the skins or hides are through this pickling process the mixture of aqua ammonia and codfish oil or grease is applied in the manner previously pointed.
- tanning leather which consists in coating a previously cleaned hide with Glaubers salt, and then treating the hide, after exposure, to a solution composed of aqua ammonia and grease or oil, substantially as set forth.
- tanning leather which consists, first, in coating a previously cleaned hide with Glaubers salt, second, permitting the hide to stand for a certain time for the absorption of all moisture, third, applying a second coating of Glaubers salt, fourth, exposing the hide fora sufficient length of time, and fifth, treating the same to a solution composed of aqua ammonia and grease or oil, sub- .stantially as set forth.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Description
7 heavy skins.
NITED STATES PATENT OFFICE.
GUSTAV RUEMELIN, OF MILWAUKEE, WISCONSIN.
PROCESS OF TANNING.
SPECIFICATION forming part of Letters Patent No. 503,987, dated August 29, 1893.
Application filed October 6, 1892. Serial No. 448,044. (No specimens.)
To all whom it may concern.-
Be it known that I, GUSTAV RUEMELIN, of Milwaukee, in the county of Milwaukee and I State of Wisconsin, have invented a new and useful Improvement in Processes of Tanning, of which the following is a description.
My invention has relation to improvements in the process of tanning.
The object of my invention is to thoroughly tan the hide without rendering it hard, and thus produce a leather having the qualities of softness and pliability to the maximum; and to this end the invention consists in the improved process hereinafter more fully set forth.
To carry my invention into effect, I take a skin of hide, previously cleaned of all impurities, such as blood, salt, lime, all mineral or organic acids, &c., and spread over the same a coating of powdered or pulverized crystal Glaubers salt, applied in a dry state. For a ten pound skin, as brought from a slaughter house in its green and wet condition, one and one-half pounds will be found a sufficient quantity for this purpose while at least six pounds should be used forhide weighing from forty to sixty pounds. About one-half of the salt is spread over the hide in the first instance, after which said hide is permitted to stand for about twelve hours in order to have the salt effectually absorb all the moisture, and when this time has expired the balance of the Glaubers salt is applied. The skins are then again exposed for a predetermined length of time, twelve hours, approximately, for light skins and twenty-four hours for The next step is to smooth the hide out upon a table and then treat the same to a composition composed of, preferably, onefourth aqua ammonia to three-fourths of oil or grease preferably unadulterated codfish oil. This is coated upon both sides of the hide by means of a brush. In the case of oils and grease of a poor quality the quantity of aqua ammonia should be less than above stated. In the case of richer oils and grease the quantity should be increased. The hide is now exposed for drying purposes, and allowed to remain in suspended position until thorough exsicoation takes place, at least two days being required for this purpose. After the drying process is completed the hide is placed in clean water to dissolve any sulphate of ammonia or any of the constituent parts of the Glaubers salt that may remain. The skin or hide is then ready for the work generally known to tanners as setting and stuffing, and after such skin or hide is dry, there is no so called staking process necessary, as the skin will remain soft. The in soluble fatty compound will remain in the skin and adhere to the fibers severally, closely, and not in a mass, leaving the fibers independent from each other, thus securing a perfect tanning and puttingthe skin in condition to reject water to a great extent.
Instead of pulverizing the crystals of Glaubers salt and applying the same in a powdered condition, theskins or hides may be placed into a solution of common salt and sulphuric acid, commonly styled, the pickle. After the skins or hides are through this pickling process the mixture of aqua ammonia and codfish oil or grease is applied in the manner previously pointed.
What I claim as new, and desire to secure by Letters Patent, is-
1. lhe process of tanning leather, which consists in coating a previously cleaned hide with Glaubers salt, and then treating the hide, after exposure, to a solution composed of aqua ammonia and grease or oil, substantially as set forth.
2. The process of tanning leather, which consists, first, in coating a previously cleaned hide with Glaubers salt, second, permitting the hide to stand for a certain time for the absorption of all moisture, third, applying a second coating of Glaubers salt, fourth, exposing the hide fora sufficient length of time, and fifth, treating the same to a solution composed of aqua ammonia and grease or oil, sub- .stantially as set forth.
In testimony whereof I affix my signature in presence of two witnesses.
GUSTAV RUEMELIN.
Witnesses:
ARTHUR L. MORSELL, O. T. BENEDICT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US503987A true US503987A (en) | 1893-08-29 |
Family
ID=2572825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US503987D Expired - Lifetime US503987A (en) | Process of tanning |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US503987A (en) |
-
0
- US US503987D patent/US503987A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US503987A (en) | Process of tanning | |
| US853166A (en) | Treating hides or skins. | |
| US459993A (en) | Henry churchill | |
| US464423A (en) | Process of tanning and dressing leather | |
| US281287A (en) | Jules louis moeet | |
| US1147178A (en) | Composition for tanning hides and skins. | |
| US561044A (en) | Process of tawing leather | |
| US777072A (en) | Tanning process. | |
| US2018660A (en) | Preservative process for cellulose materials | |
| US229928A (en) | Tanning process | |
| US261073A (en) | Process of making leather | |
| US401434A (en) | Process of tanning | |
| US721553A (en) | Treating hides or skins. | |
| US645056A (en) | Process of treating leather. | |
| US599812A (en) | Albert h | |
| USRE189E (en) | Improvement in tanning leather by tannin and acids | |
| US825852A (en) | Process of tanning. | |
| US389150A (en) | Process of rapid tanning | |
| US6790A (en) | Improvement in tanning leather by tannin and acids | |
| US282316A (en) | Process of preparing skins | |
| US1197519A (en) | Process for removing hair from hides. | |
| US118746A (en) | Improvement in processes of treating and preserving hides | |
| US17955A (en) | Improvement in tawing and coloring skins and furs | |
| US455674A (en) | Process of treating hides | |
| US506696A (en) | Tanning process |