US40669A - Improvement in treating tanned leather - Google Patents
Improvement in treating tanned leather Download PDFInfo
- Publication number
- US40669A US40669A US40669DA US40669A US 40669 A US40669 A US 40669A US 40669D A US40669D A US 40669DA US 40669 A US40669 A US 40669A
- Authority
- US
- United States
- Prior art keywords
- leather
- improvement
- tanned leather
- petroleum
- treating tanned
- 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
- 239000010985 leather Substances 0.000 title description 26
- 239000003208 petroleum Substances 0.000 description 16
- 150000002430 hydrocarbons Chemical class 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 239000003760 tallow Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- 210000003491 Skin Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001050 lubricating Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000000149 penetrating Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 210000001519 tissues Anatomy 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
- C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
Definitions
- My invention consists in the treatment of tanned leather by applying to the same, substantially in the manner described hereinafter, petroleum or any oily hydrocarbons holding paraffine in solution, in combination with t a llow or its equivalent, so as to rapidly reduce the leather to the desired pliable condition at a much less cost than by the application of the usual oily and greasy substances hitherto used for the same purpose.
- the application is madein thefollowing manner:
- the hide in its half-dried state is placed on a table or slab and rubbed down by a suitable instrument until perfectly level. It is then coated over on the flesh side with the compound, care being taken that the entire surface is evenly covered.
- the hide or skin is then hung up and allowed to remain untouched for forty-eight hours, or thereabout, according to the thickness of the skin. 0n removal it will be found that the leather has been effectually penetrated by the petroleum, and that its fibrous tissues have become thorougly impregnated with the oily hydrocarbon and the paraffine held in solution by the latter, and that the leather has been reduced to the desired state of pliability, the tallow assisting to reduce it to that state.
- a ter 1e superfluous portion of the compound has been removed from the leather and the latter has been subjected to processes generally adopted after the application of the usual dubbing, the leather may be blackened, if desired, and is then ready for the market.
- composition may be applied to both sides of the hide; but its application to one side only will in most cases be sufficient.
Description
UNITED STATES PATENT OFFICE.
IMPROVEMENT IN TREATING TANNED LEATHER.
Specification forming part of Letters Patent No. 40,669, dated November 17, 1863.
To all whom it may concern:
Be it known that I, BENJAMIN H. LIGHT- FOOT, of Philadelphia, Pennsylvania, have invented an Improvement in the Treatment of Tanned Leather; and I do hereby declare the following tobe a full, clear, and exact description of the same.
My invention consists in the treatment of tanned leather by applying to the same, substantially in the manner described hereinafter, petroleum or any oily hydrocarbons holding paraffine in solution, in combination with t a llow or its equivalent, so as to rapidly reduce the leather to the desired pliable condition at a much less cost than by the application of the usual oily and greasy substances hitherto used for the same purpose.
In order to enable others skilled in the art of currying to practice my invention, 1 will now proceed to describe themanner of carryin g it into effect. l
I have found by practical tests, and after a series of very careful and long-continued experiments, that tanned leather can be reduced to the desired pliability by the application of petroleum or rock-oil or its equivalent at much less expense than by the use of the ordinary greasy and oily compounds, technically termed dubbing! Although I have used the crude petroleum as obtained direct from the oil-wells with marked success for the above purpose, some of the products of the distillation ofpetroleum may be employed with the best resultsas, for instance, the heavy oil used for lubricating machinery, the grease also used for lubricating purposes, and consisting of paraffine with a little oil. In fact, any hydrocarbons holding more or less paraffine in solution can be used, whether they be obtained by the distillation of coal, or found in a natural state, or obtained by the distillation of petroleum.
In carrying myinvention into effect I adopt I the following process: The tanned hideis first subjected to the preliminary soaking process adopted in currying leather, and is subsequently dressed and its inequalities removed by shaving and scouring-processes so well understood by those familiar with the art of curryin g that a lengthy description is unnecessary. The hide is then allowed to become partially or, as it is technically termed, half dried, after which it is ready for the application of the mixture of petroleum and tallow, or their equivalents.
The proper proportion of the'ingredients must be determined by the experience of the currier, as more tallow is required in warm weather than in cold weather.
The application is madein thefollowing manner: The hide in its half-dried state is placed on a table or slab and rubbed down by a suitable instrument until perfectly level. It is then coated over on the flesh side with the compound, care being taken that the entire surface is evenly covered. The hide or skin is then hung up and allowed to remain untouched for forty-eight hours, or thereabout, according to the thickness of the skin. 0n removal it will be found that the leather has been effectually penetrated by the petroleum, and that its fibrous tissues have become thorougly impregnated with the oily hydrocarbon and the paraffine held in solution by the latter, and that the leather has been reduced to the desired state of pliability, the tallow assisting to reduce it to that state. A ter 1e superfluous portion of the compound has been removed from the leather and the latter has been subjected to processes generally adopted after the application of the usual dubbing, the leather may be blackened, if desired, and is then ready for the market.
The composition may be applied to both sides of the hide; but its application to one side only will in most cases be sufficient.
Thetriflin g cost of petroleum compared with that of the usual tanners oil and the penetrating quality of the oily hydrocarbon render the above-described process one of ready accomplishment at a much reduced cost. At the same time the leather thus treated is of a quality equal, if not superior, to that treated by the usual dubbing.
I claim as my invention and desire to secure by Letters Patent The treatment of tanned leather by the application to the same, substantially in the manner described, of petroleum or any oily hydrocarbons holding paraffine in solution, in combination with tallow or its equivalent.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
BENJAMIN H. LIGHTFOOT.
Witnesses:
HENRY HowsoN, J OHN WHITE.
Publications (1)
Publication Number | Publication Date |
---|---|
US40669A true US40669A (en) | 1863-11-17 |
Family
ID=2110239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US40669D Expired - Lifetime US40669A (en) | Improvement in treating tanned leather |
Country Status (1)
Country | Link |
---|---|
US (1) | US40669A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010000971A1 (en) * | 1995-04-07 | 2001-05-10 | Colorlink, Inc. | Color imaging systems and methods |
-
0
- US US40669D patent/US40669A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010000971A1 (en) * | 1995-04-07 | 2001-05-10 | Colorlink, Inc. | Color imaging systems and methods |
US6899430B2 (en) * | 1995-04-07 | 2005-05-31 | Colorlink, Inc. | Color imaging systems and methods |
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