US401434A - Process of tanning - Google Patents
Process of tanning Download PDFInfo
- Publication number
- US401434A US401434A US401434DA US401434A US 401434 A US401434 A US 401434A US 401434D A US401434D A US 401434DA US 401434 A US401434 A US 401434A
- Authority
- US
- United States
- Prior art keywords
- tanning
- liquor
- vat
- skins
- pounds
- 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 8
- 210000003491 Skin Anatomy 0.000 description 8
- 239000010985 leather Substances 0.000 description 8
- 229940037003 alum Drugs 0.000 description 6
- 239000010446 mirabilite Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N Calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 4
- 235000016337 monopotassium tartrate Nutrition 0.000 description 4
- AVTYONGGKAJVTE-OLXYHTOASA-L potassium L-tartrate Chemical compound [K+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O AVTYONGGKAJVTE-OLXYHTOASA-L 0.000 description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
- 235000010333 potassium nitrate Nutrition 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 240000006523 Abies balsamea Species 0.000 description 2
- 235000007173 Abies balsamea Nutrition 0.000 description 2
- 239000001263 FEMA 3042 Substances 0.000 description 2
- 239000001828 Gelatine Substances 0.000 description 2
- 235000016976 Quercus macrolepis Nutrition 0.000 description 2
- 244000305267 Quercus macrolepis Species 0.000 description 2
- 229940033123 Tannic Acid Drugs 0.000 description 2
- LRBQNJMCXXYXIU-NRMVVENXSA-N Tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 description 2
- 230000002708 enhancing Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 235000015523 tannic acid Nutrition 0.000 description 2
- 229920002258 tannic acid Polymers 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
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
Definitions
- the skins having been depilated I prepare a sufiicient quantity of liquor, either from oak or hemlock bark, of 18 to 20 of strength of the barkometer to cover fifty skins, that being the usual number placed in each vat.
- the improved mode of tanning heretofore described which consists in submitting the depilated hides to a mixture of saltpeter, alum, and Glaubers salt in admixture with a barkliquor, in the proportion and manner and during the time substantially 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
UNITED STATES PATENT OFFICE.
JAMES W. HITT, OF LISLE, ASSIGNOR TO THEODORE L. CORIVIN, OF MARATHON, NEW YORK.
PROCESS OF TANNING.
SPECIFICATION forming part of- Letters Patent No. 401,434, dated April 16, 1889. Application filed January 1d, 1889. Serial No. 296,329. (No specimens.)
To all whom it may concern.-
Be it known that 1, JAMES W. Hrrr, of the town of Lisle, county of Broome, and State of New York, have invented a new and useful Process to be Used in Connection with the Ordinary Method of Tanning Leather, of which the following is a full specification.
By this method there is a saving of much of the labor, shortening of the time, reduction of the cost, and improvement of the quality of the leather.
It is Well known that by the ordinary processes of tanning the hides, after the hair has been removed, are placed in Weak liquor, and for a period of from three to four months require much handling and frequent change of baths of difierent degrees of strength, till finally they are thoroughly tanned. Much care has to be exercised lest too strong liquor be used, in which case the tannic acid of the liquor will act on the grain of the hide, rendering it crisp and brittle, materially impairing its value. The preparation I use unites with ordinary tanning-liquors in such a way as to render the action on the gelatine and fiber of the hide harmless, and at the same time admit-s of their remaining in the vat in which they are first placed until completely tanned.
The skins having been depilated,I prepare a sufiicient quantity of liquor, either from oak or hemlock bark, of 18 to 20 of strength of the barkometer to cover fifty skins, that being the usual number placed in each vat. To this liquor I add a solution made as follows, viz: I take four pounds of saltpeter, (nitrate of potassium,) four pounds of alum, (sulphate of alumina and potassa,) five pounds of Glaubers salt, (sulphate of sodium,) and these I dissolve in hot water. Having added this solution to the bark-liquor, I submerge the skins in the mixture, agitating the skins and liquor once an hour for the first twelve hours. After this is done I let' them remain in the vat six days, unless they are very heavy, in which case they may remain eight days in the vat, at the end of which time they will be found to be thoroughly tanned. They are then to be washed, dried, and finished in the usual manner, unless they are to be sold in the rough or made into sole-leather, in which case I rinse them in a vat containing suflicient Water, to which is added three pounds of pure cream of tartar. This does not enhance the value of the leather more than to give it a nice, clean, bright appearance.
I am aware that alum, Glaubers salt, and cream of tartar have all been separately used in connect-ion With tanning. I am not aware that they have ever been used in combination or in the manner in which I use them.
Having fully described my invention, what I claim, and desire to secure by Letters Patent, is-
The improved mode of tanning heretofore described, which consists in submitting the depilated hides to a mixture of saltpeter, alum, and Glaubers salt in admixture with a barkliquor, in the proportion and manner and during the time substantially as set forth.
In testimony hereof I have set my hand this 10th day of January, 1889.
JAMES \V. HITT.
In presence of- T. L. CoRWrN, HENRY E. WILSON.
Publications (1)
Publication Number | Publication Date |
---|---|
US401434A true US401434A (en) | 1889-04-16 |
Family
ID=2470392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US401434D Expired - Lifetime US401434A (en) | Process of tanning |
Country Status (1)
Country | Link |
---|---|
US (1) | US401434A (en) |
-
0
- US US401434D patent/US401434A/en not_active Expired - Lifetime
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