US178305A - Improvement in the manufacture of rawhides - Google Patents
Improvement in the manufacture of rawhides Download PDFInfo
- Publication number
- US178305A US178305A US178305DA US178305A US 178305 A US178305 A US 178305A US 178305D A US178305D A US 178305DA US 178305 A US178305 A US 178305A
- Authority
- US
- United States
- Prior art keywords
- hides
- rawhides
- improvement
- manufacture
- 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
- 238000004519 manufacturing process Methods 0.000 title description 6
- 229940037003 alum Drugs 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 150000003839 salts Chemical class 0.000 description 10
- 239000011780 sodium chloride Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 208000008454 Hyperhidrosis Diseases 0.000 description 4
- 210000004243 Sweat Anatomy 0.000 description 4
- 235000020127 ayran Nutrition 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 235000011187 glycerol Nutrition 0.000 description 4
- 230000035900 sweating Effects 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000015450 Tilia cordata Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005406 washing Methods 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 relates to an improved process for converting green hides into rawhides.
- the green hides I soak in water over night. Then'after they are brushed and partly fleshed I put them in an airtight sweat-box, and sweat them with steam until the hair andfiesh can be readily removed.
- the hides are unhaired and fleshed I put them in a hot solution of two parts of alum and one part salt, dissolved in a sufficient quantity of water to cover the hides. In this solution I leave the hides until they are tanned, stirring the hides or turning them every three hours.
- the hides are tanned I wash them thoroughly, so as to remove the salt and alum as much as possible, and then hang them up to dry.
- they are dry I dip them once or twice in water, and place them in a pile one upon another, so as to allow the dampness to penetrate them in a uniform manner.
- the hides are then stretched, and dipped in a solution composed of tanners oil, four parts; glycerine, two parts; tar, two parts.
- the hides are then rolled together, in which condition they are allowed to remain about ten minutes, when they are again stretched, and laid by for an hour or two to dry out. This produces a superior rawhide, and it is then in the proper condition to be waterproofed by the first-described process.
Description
UNITED STATES PATENT OFFICE.
AUGUST C. KRUEGER, OF SAN FRANCISCO, CALIFORNIA.
IMPROVEMENT IN THE MANUFACTURE OF RAWHIDES.
Specification forming part of Letters Patent No. l7S,3 05, dated J une 6,1876; application filed November 27, 1875.
' by declare the following description and accompanying drawings are sut'ficient to enable any person skilled in the art or science to which it most nearly appertains to make and use my said invention or improvement without further invention or experiment.
My invention relates to an improved process for converting green hides into rawhides.
In the manufacture of rawhides from the green hide I employ a process which is peculiarly my own, and which possesses many advantages, especially when the hides are intended to be waterproofed by the above process; and this process is described as follows:
The green hides I soak in water over night. Then'after they are brushed and partly fleshed I put them in an airtight sweat-box, and sweat them with steam until the hair andfiesh can be readily removed. When the hides are unhaired and fleshed I put them in a hot solution of two parts of alum and one part salt, dissolved in a sufficient quantity of water to cover the hides. In this solution I leave the hides until they are tanned, stirring the hides or turning them every three hours. When the hides are tanned I wash them thoroughly, so as to remove the salt and alum as much as possible, and then hang them up to dry. When they are dry I dip them once or twice in water, and place them in a pile one upon another, so as to allow the dampness to penetrate them in a uniform manner.
The hides are then stretched, and dipped in a solution composed of tanners oil, four parts; glycerine, two parts; tar, two parts.
The hides are then rolled together, in which condition they are allowed to remain about ten minutes, when they are again stretched, and laid by for an hour or two to dry out. This produces a superior rawhide, and it is then in the proper condition to be waterproofed by the first-described process.
I am aware that it is not new to sweat the hair off of green hides, neither isit new to tan with alum hides which have been unhaired with lime; but hides which have been unhaired by the sweating process have never to my knowledge been tanned with alum; neither has it been known that the alum and salt could be washed out of the hide after they have been used foraccomplishing the tan mug.
Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s
The process above described for converting green hides into rawhides, the same consisting in sweating the hair from the hides, then tanning the hides in a solution of alum and salt, then washing the salt and alum out of the hides, then dipping them in a solution of tauners oil, glycerine, and tar, substantially as and forthe purpose described.
AUGUST 0. KRUEGER.
Witnesses JNo. L. BOONE, G. M. RICHARDSON.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US178305A true US178305A (en) | 1876-06-06 |
Family
ID=2247712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US178305D Expired - Lifetime US178305A (en) | Improvement in the manufacture of rawhides |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US178305A (en) |
-
0
- US US178305D patent/US178305A/en not_active Expired - Lifetime
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