US640776A - Process of bating hides. - Google Patents

Process of bating hides. Download PDF

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Publication number
US640776A
US640776A US73225699A US1899732256A US640776A US 640776 A US640776 A US 640776A US 73225699 A US73225699 A US 73225699A US 1899732256 A US1899732256 A US 1899732256A US 640776 A US640776 A US 640776A
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United States
Prior art keywords
hides
bating
pounds
hyposulfite
skins
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US73225699A
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Charles W Koch
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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
    • C14C1/08—Deliming; Bating; Pickling; Degreasing

Definitions

  • tanning step of any kindviz., bark, gambier, &c.

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.
CHARLES IV. KOCH, OF MILWAUKEE, WISCONSIN.
PROCESS OF BATING HIDES.
SPECIFICATION forming part of Letters Patent No. 640,776, dated January 9, 1900.
Application filed September 30,1399.
To all whom, it may concern.-
Be it known that 1, CHARLES W. Kocn, a resident of Milwaukee, county of Milwaukee, and State of IVisconsin, have invented a new and useful process for removing lime from all hides or skins or preparing the same for the tanning process after the hides or skins have been limed and unhaired in the wellknown way quite familiar to those skilled in the art of tanning, of which the following is a specification.
After the hides or skins have been thoroughly washed and as much of the lime removed therefrom as practicable by washing with water a further treatment is necessary in order to more completely prepare the hides or skins for tanning and produce a superior quality of leather. To accomplish this object in a simple manner and Without injury to the hides, I make a solution of about two hundred and fifty (250) gallons of water, one hundred and fifty (150) pounds of common salt, three (3) pounds of hyposulfite of soda, and three (3) pounds of sulfuric acid or three (3) pounds of hydrochloric acid instead of the sulfuric acid. About two hundred calfskins and about fifty hides can be agitated in this solution, where they should remain for about two hours or longer. After this I agitate them in a second solution composed of about two hundred (200) gallons of water, ten (10) pounds of Glauber salts, and sixty (60) pounds of hyposulfite of soda or the same quantity of sodium-sulfite crystals. In this Serial No. 73 .256. (No specimens.)
solution they should be agitated for about two hours or longer, after which they are ready for what is known as the tanning step of any kindviz., bark, gambier, &c.
The above solutions can be used for a long time, as they will not ferment or decompose. They only require strengthening proportionally as they become weakened by adding the same ingredients. The ingredients of both solutions can be combined in one with good results.
I do not broadly claim the use of acids as bating material, as I am aware that acids have been used in other patents heretofore. Iam also aware that hyposulfite of soda (N a S O 5H O) is used in processes of chrome tanning in combination with acids; but I am not aware that hyposulfite of .soda in combination with acids, common salt, and Glauber salt has ever before been used as bating material for hides or skins.
Having now described my invention, what I claim, and desire to secure by Letters Patent, is-
The process of bating hides by submitting them to a solution, consisting of water, sulfuric acid, common salt, and hyposulfite of soda, Na S O ,5I-I O, substantially as described.
CHARLES W. KO CH.
Witnesses:
O. H. KORMAN, GUST JANZER.
US73225699A 1899-09-30 1899-09-30 Process of bating hides. Expired - Lifetime US640776A (en)

Priority Applications (1)

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US73225699A US640776A (en) 1899-09-30 1899-09-30 Process of bating hides.

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US73225699A US640776A (en) 1899-09-30 1899-09-30 Process of bating hides.

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US640776A true US640776A (en) 1900-01-09

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US73225699A Expired - Lifetime US640776A (en) 1899-09-30 1899-09-30 Process of bating hides.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8380635B2 (en) 2009-07-31 2013-02-19 International Business Machines Corporation User feedback method and system for business suite customization

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8380635B2 (en) 2009-07-31 2013-02-19 International Business Machines Corporation User feedback method and system for business suite customization

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