US14399A - Improvement in tanning - Google Patents
Improvement in tanning Download PDFInfo
- Publication number
- US14399A US14399A US14399DA US14399A US 14399 A US14399 A US 14399A US 14399D A US14399D A US 14399DA US 14399 A US14399 A US 14399A
- Authority
- US
- United States
- Prior art keywords
- tanning
- solution
- hides
- leather
- alum
- 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 28
- FGIUAXJPYTZDNR-UHFFFAOYSA-N Potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 22
- 239000010985 leather Substances 0.000 description 18
- 210000003491 Skin Anatomy 0.000 description 16
- 229940037003 alum Drugs 0.000 description 16
- 240000005368 Areca catechu Species 0.000 description 14
- 235000006226 Areca catechu Nutrition 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 235000010333 potassium nitrate Nutrition 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 239000004615 ingredient Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 210000004369 Blood Anatomy 0.000 description 2
- VXMKYRQZQXVKGB-CWWHNZPOSA-N Tannin Chemical compound O([C@H]1[C@H]([C@@H]2OC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)O[C@H]([C@H]2O)O1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 VXMKYRQZQXVKGB-CWWHNZPOSA-N 0.000 description 2
- 235000020127 ayran Nutrition 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 230000003247 decreasing Effects 0.000 description 2
- 230000003292 diminished Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 235000018553 tannin Nutrition 0.000 description 2
- 229920001864 tannin Polymers 0.000 description 2
- 239000001648 tannin 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
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
Definitions
- my invention consists in the .use of saltpeter and alum in connection with catechuin tanning all kinds of skins and hides.
- the process of tanning cowhides' is as follows: I take, say, twenty pieces and prepare them for tanning by any of the known processes. I then place them in a vat or vessel large enough to contain them. (The vessel should be of copper, wood, or some other material which will not act chemically on the solution hereinafter described.) I then dissolve about twenty pounds of catechu in Water sufficient to cover the hides and pour the solution over them. After the hides have remained in the above-described solution about forty-eighthours Idissolve about thirty pounds catechu and about thirty pounds of alum dis-' solved in sufficient water to cover the hides, and place the hides in it the same as in the first solution. They remain in this solution until they become plump and firm, usually from two to three days.
- the process is the same as the above, except that the quantity of alum in the second solution is about one-half less than the quantity first hereinbefore stated.
- the skin In tanning leather quickly by a solution of catechu, or of galls, or of barks, the skin combines with but a comparatively small quantity of extractive matter, and consequently the leather thus tanned is flat, spongy, and porous.
- the use of alum in solution with the tanning principle supplies the requisite quantity of extractive matter, closes the pores of the skin, and renders the leather plump and firm and less susceptible of the action of water.
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 R. GOULD, OF WHITEWATER, WISCONSIN.
IMPROVEMENT IN TANNING.
Specification forming part of Letters Patent No. 14,399, dated March 11, 1856. i
To all whom it may concern:
Be it known that I, RosELoUs GOULD, of Whitewater, in the county of Walworth, in the State of Wisconsin, have invented or discovcred anew and Improved Mode of Tanning Leather; and I do hereby declare that the following is a full and exact description thereof.
The nature of my invention consists in the .use of saltpeter and alum in connection with catechuin tanning all kinds of skins and hides.
To enable others skilled in the art to make use of my invention, I will proceed to describe the process'of tanning by means of my invention.
The process of tanning cowhides'is as follows: I take, say, twenty pieces and prepare them for tanning by any of the known processes. I then place them in a vat or vessel large enough to contain them. (The vessel should be of copper, wood, or some other material which will not act chemically on the solution hereinafter described.) I then dissolve about twenty pounds of catechu in Water sufficient to cover the hides and pour the solution over them. After the hides have remained in the above-described solution about forty-eighthours Idissolve about thirty pounds catechu and about thirty pounds of alum dis-' solved in sufficient water to cover the hides, and place the hides in it the same as in the first solution. They remain in this solution until they become plump and firm, usually from two to three days. Daily during the whole process I take the hides out and hang them up, exposed to the action of the air, for from one to two hours, and while the hides are being thus aired Iheat the solution from which 1 have just taken the hides until the scum or sediment rises to the surface, when it is skimmed off. The solution should be heated in a vessel of copper,wood,or some other substance which will not act chemically on the solution. The solution is thus heated and skimmed to prevent it from becoming thick, and thereby impeding the process of tanning. When the solution has cooled to about blood heat I replace the hides in it. For tanning any greater or less number than twenty hides the quantity of the respective ingredients of the solution above described is proportionately increased or diminished. After the hides are tanned as above they are taken out of the solution and finished in any of the known methods for finishing leather. v
For tannin g calf-skins and other skins which are lighter than ordinary cowhides the process is the same as above described; but the time required in the process and the quantities of the several materials placed in solution are decreased proportionately as the skins to be tanned are lighter than ordinary cowhides,
whileif, 011 the contrary, the skins to be tanned are heavier, the time required in the process and the quantities of the several materials placed in solution are proportionately increased. 1
For tanning sole-leather the process is the same as the above, except that the quantity of alum in the second solution is about one-third more than is first hereinbefore stated.
For tanning harness-leather the process is the same as the above, except that the quantity of alum in the second solution is about one-half less than the quantity first hereinbefore stated.
The strength of the solutions above described. and the relative proportions of catechu and saltpeter used in making the first solution and of .cateebu, saltpeter; and alum used in making the second solution may be varied to a considerable extent, and will produce proportionate effects without at all deviating from my invention. Therefore I do not confine myself to any particular strength of the solutions above described, nor to any particular quantity of either of the ingredients composing the said solutions; but the strength of the solutions and the quantities'above described of the respective ingredients composing said solutions are what I have found best and which I prefer. E
In all known processes of tanning leather the animal fibers on the surface of the skin absorb most readily the tanning principles,
, property of catechu or niter or of alum in relaand thereby obstruct in some degree their passage into the interior fibers. The saltpeter placed in solution with the tanning principle overcomes thatobstacle and promotes the penetration of the tan.
In tanning leather quickly by a solution of catechu, or of galls, or of barks, the skin combines with but a comparatively small quantity of extractive matter, and consequently the leather thus tanned is flat, spongy, and porous. The use of alum in solution with the tanning principle supplies the requisite quantity of extractive matter, closes the pores of the skin, and renders the leather plump and firm and less susceptible of the action of water.
I do not claim the use of catechu in the process of tanning as my im'ention, for its use has long been known.
I do not claim to have discovered any new tion to their employment in tanning operations; but I do claim to have discovered that in order to improve the proper exercise of the preparations of these substances in tanning they must be used in a certain manner different from the mode in which they have hitherto been known to be used. I claim to have discovered that in order to use these substances effectually for tanning they must be em- I ployed substantially according to the process set forth in my application; and I claim to have discovered that when these three substances or their chemical equivalents have been employed together they have and must fail, as they are to some extent incompatible when so used.
What I claim as my invention, and which I desire to secure by Letters Patent, is-- The use, in the process of the tanning of hides and skins for the making of leather, of the two solutions above described, used and applied each separately or at different times, and in the order following, viz: first, by using a combined solution of catechu (or any other material its equivalent as containing the tanning properties) and saltpeter, substantially in the mode of application as my equivalent, as above described; second, by using a combined solution ofcatechu (or any other material its equivalent as containing the tanning properties) and alum, substantially in the mode of application above described, orany mode of application equivalent thereto.
tOSELOUS GOULD.
Witnesses:
E. F. Bones, J. W. M. WILLIAMS.
Publications (1)
Publication Number | Publication Date |
---|---|
US14399A true US14399A (en) | 1856-03-11 |
Family
ID=2074734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14399D Expired - Lifetime US14399A (en) | Improvement in tanning |
Country Status (1)
Country | Link |
---|---|
US (1) | US14399A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5609119A (en) * | 1996-01-19 | 1997-03-11 | Yeh; Ching-Lin | Method of making embroidery |
US20070162424A1 (en) * | 2005-12-30 | 2007-07-12 | Glen Jeh | Method, system, and graphical user interface for alerting a computer user to new results for a prior search |
-
0
- US US14399D patent/US14399A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5609119A (en) * | 1996-01-19 | 1997-03-11 | Yeh; Ching-Lin | Method of making embroidery |
US20070162424A1 (en) * | 2005-12-30 | 2007-07-12 | Glen Jeh | Method, system, and graphical user interface for alerting a computer user to new results for a prior search |
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