US53800A - Improved method of treating leather scraps - Google Patents
Improved method of treating leather scraps Download PDFInfo
- Publication number
- US53800A US53800A US53800DA US53800A US 53800 A US53800 A US 53800A US 53800D A US53800D A US 53800DA US 53800 A US53800 A US 53800A
- Authority
- US
- United States
- Prior art keywords
- improved method
- leather scraps
- treating leather
- scraps
- vessel
- 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 12
- 239000003760 tallow Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000002087 whitening Effects 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 210000003491 Skin Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
- C11B13/02—Recovery of fats, fatty oils or fatty acids from waste materials from soap stock
Definitions
- I provide a vat or vessel of any desirable capacity and furnish the same with a cover.
- I put as large a quantity as may be desirable of the scraps or waste portions of leather to be acted on.
- I put into the said vessel a sufficient quantity of water to cover the said portions.
- I raise the water thereof to a boiling temperature and main-. tain the same in a state of ebullition for about two hours, or until the fat or oil may have been expelled from the leather.
- a large kettle or metallic boiler might be employed and the water heated by the application of fire underneath such vessel or boiler; but this latter mode I do not consider so good in many respects as the former.
- the tallow or fatty matters owing to their lighter specific gravity, will rise to the surface of the water, and may be. either skimmed therefrom into another vessel or may be suffered to remain until they may have become cooled, when the concrete mass may be removed.
- I claim 1. Recovering the tallow or fatty matters from whitenings or scraps of leather in the manner as set forth.
Description
UNITED STATES PATENT FFICE.
HENRY B. FARWELL, OF BOSTON, MASSACHUSETTS.
Specification forming part of Letters Patent N0. 53,800, dated April 10, 1866.
To all whom "it may concern:
Be it known that I, HENRY B. FARWELL, of Boston, in the county of Suffolk and State of Massachusetts, have made a new and useful invention having reference to the Treatment of Whitenings, or NVaste Portions or Scraps of Leather, in order to extract and purify the oleaginous matters with which they have been impregnated; and I do hereby declare the same to be fully set forth in the foL lowing description.
It is a fact well known to those conversant with the tanning and carrying of hides and skins that a great amount of valuable fatty matters is yearly lost in the whitening and scraps of leather, which are usually either burned or thrown away. To recover the tallow or oleaginous matters from such is the main object of my invention.
In carrying out my invention I provide a vat or vessel of any desirable capacity and furnish the same with a cover. Into this vessel I put as large a quantity as may be desirable of the scraps or waste portions of leather to be acted on. Next I put into the said vessel a sufficient quantity of water to cover the said portions. Next, by means of steam introduced into the vessel, I raise the water thereof to a boiling temperature and main-. tain the same in a state of ebullition for about two hours, or until the fat or oil may have been expelled from the leather. I would remark that a large kettle or metallic boiler might be employed and the water heated by the application of fire underneath such vessel or boiler; but this latter mode I do not consider so good in many respects as the former.
The tallow or fatty matters, owing to their lighter specific gravity, will rise to the surface of the water, and may be. either skimmed therefrom into another vessel or may be suffered to remain until they may have become cooled, when the concrete mass may be removed.
In order to free the tallow from any foreign matter with which it may be impregnated, I put into the mass, when it has been sufficiently boiled, a small quantity of the oil of vitriolthat is to say, one pound of the vitriol to three hundred gallons of water. This I have found has the effect of freeing in a great measure the tallow from the impurities with which it was combined.
By my improvement I am enabled to recover and utilize a large percentage of valuable fatty matter which has heretofore been usually wasted.
I claim 1. Recovering the tallow or fatty matters from whitenings or scraps of leather in the manner as set forth.
2. In combination with the same, the employment of oil of vitriol, as and for the purpose set forth.
HENRY B. FARWELL.
Witnesses OLIVER W001), SAML. J oNEs.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US53800A true US53800A (en) | 1866-04-10 |
Family
ID=2123344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US53800D Expired - Lifetime US53800A (en) | Improved method of treating leather scraps |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US53800A (en) |
-
0
- US US53800D patent/US53800A/en not_active Expired - Lifetime
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