US180947A - Improvement in manufacturing leather - Google Patents
Improvement in manufacturing leather Download PDFInfo
- Publication number
- US180947A US180947A US180947DA US180947A US 180947 A US180947 A US 180947A US 180947D A US180947D A US 180947DA US 180947 A US180947 A US 180947A
- Authority
- US
- United States
- Prior art keywords
- leather
- hide
- improvement
- tanned
- manufacturing leather
- 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 22
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000000034 method Methods 0.000 description 6
- 238000007654 immersion Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 208000008454 Hyperhidrosis Diseases 0.000 description 2
- 210000003491 Skin 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
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 235000020127 ayran Nutrition 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003292 diminished Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000035900 sweating Effects 0.000 description 2
- 239000003760 tallow Substances 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
- 239000011269 tar Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Definitions
- the presentinvention relates to an improved method of preparingleather, by means whereof leather is not only produced much quicker and more economically than by the usual process, but the product itself is especially valuable in combining the strength of the raw hideand the durability, pliableness, body, and finish of the ordinary tanned leather.
- My improved process is as follows: The hides are prepared, in the usual way, by sweating them, or soakingthein in lime-water. Having been suitably bated and Worked, they are then put in tan-liquor, as if for the regular tanning process, where they are kept and handled until plump, and until any lime or foreign substance is neutralized, and for, say,
- the bath being of the strength generally used in the initial stages of tanning.
- the period of immersion varies somewhat according to the weight of the hide and the strength of the liquor; and it can be shortened by employing machinery to agitate the hides during their immersion.
- This interior stratum can be "educed in thickness by keeping the hide longer in the tan-liquor.
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.
JOHN A. J. SHULTZ, OF ST. LOUIS, 'MISSOURI.
IMPROVEMENT IN MANUFACTURING LEATHER.
Specification forming part of Letters Patent No. I 80,947, dated August 8, 1876; application filed April 19, 1876.
To all whom it may concern.-
Be it known that 1, JOHN A. J. sHULTz,
a resident of St. Louis, State of Missouri, have invented a new and useful Improvement in the Method of Manufacturing Leather, of which the following is a full, clear, and exact description:
Heretofore, in making leather, it has been customary to thoroughly tan the hide through and through, the hide for this purpose being immersed in tan-liquor for several months, and even years. Prepared in this way,-.the interior of the hide is tanned uniformly with the surface. The strength, however, of such leather compared with that of the raw hide is diminished.
When, on the other hand, to preserve the original strength of the raw hide the skin is not tanned at all, but is simply fulled, curried, and studied, it is made pliable and measurably water-proof. The product, however, is lacking in body and finish, and is not durable.
The presentinvention relates to an improved method of preparingleather, by means whereof leather is not only produced much quicker and more economically than by the usual process, but the product itself is especially valuable in combining the strength of the raw hideand the durability, pliableness, body, and finish of the ordinary tanned leather.
My improved process is as follows: The hides are prepared, in the usual way, by sweating them, or soakingthein in lime-water. Having been suitably bated and Worked, they are then put in tan-liquor, as if for the regular tanning process, where they are kept and handled until plump, and until any lime or foreign substance is neutralized, and for, say,
eight or ten days, the bath being of the strength generally used in the initial stages of tanning.
The period of immersion varies somewhat according to the weight of the hide and the strength of the liquor; and it can be shortened by employing machinery to agitate the hides during their immersion. This produces a partial tanning of the hidethat is, it is tanned in slightly from its surfaces, while the stratum between the surface-layers of the hide is not tanned, but only brought sufficiently under the influence of the tannin to prevent any tendency to decomposition. This, however, is insufficient to impair the original strength of the hide. This interior stratum can be "educed in thickness by keeping the hide longer in the tan-liquor. After taking the hides from the bath they are dried, and, when dry, they are dampened, fulled, or softened, and stuffed in fulling-stocks, such as are generally used by tanners, or in any machine that will do such work, and are then curried, set out, and dried, as with ordinary leather.
In stuflzing I use the usual materials, and, preferably, tallow, tar, and oil. In this manner a very superior article of leather is obtained, and one which, among other uses, is particularly valuable for belting, lace-leather, and harness-leather.
What I claim is- As a new article of manufacture, leather having tanned surfaces and an interior of pliable raw hide, substantially as described.
JOHN A. J. SHULTZ.
Witnesses:
SAML. S. BOYD, CHAS. D. MOODY.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US180947A true US180947A (en) | 1876-08-08 |
Family
ID=2250353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US180947D Expired - Lifetime US180947A (en) | Improvement in manufacturing leather |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US180947A (en) |
-
0
- US US180947D patent/US180947A/en not_active Expired - Lifetime
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