US152208A - Improvement in processes for cooling lard, tallow - Google Patents
Improvement in processes for cooling lard, tallow Download PDFInfo
- Publication number
- US152208A US152208A US152208DA US152208A US 152208 A US152208 A US 152208A US 152208D A US152208D A US 152208DA US 152208 A US152208 A US 152208A
- Authority
- US
- United States
- Prior art keywords
- tallow
- lard
- processes
- cooling
- improvement
- 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
- 239000003760 tallow Substances 0.000 title description 8
- 238000001816 cooling Methods 0.000 title description 7
- 238000000034 method Methods 0.000 title description 6
- 239000000126 substance Substances 0.000 description 4
- 238000004061 bleaching Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- CKQVRZJOMJRTOY-UHFFFAOYSA-N octadecanoic acid;propane-1,2,3-triol Chemical compound OCC(O)CO.CCCCCCCCCCCCCCCCCC(O)=O CKQVRZJOMJRTOY-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
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
- C11B3/00—Refining fats or fatty oils
- C11B3/12—Refining fats or fatty oils by distillation
- C11B3/14—Refining fats or fatty oils by distillation with the use of indifferent gases or vapours, e.g. steam
Definitions
- ROBERT B BANOROFT, OF BOSTON, MASSACHUSETTS.
- This invention relates to that class of processes employed for cooling, purifying, and bleaching tallow and lard while in process of rendering, orwhile in a melted condition and it consists in passing condensed air through these substances.
- I introduce into the bottom of the clarifying and cooling tank, otherwise constructed in the usual manner, one or more pipes perforated with holes from one-eighth to one-fourth of an inch in diameter, and connect these pipes with a condensed-air tank, of a size proportionate to the size of the clarifying-tank.
- I cause the air to be forced into the condensed-air tank by an ordinary air-pump, and when it is sutficiently cooled I cause the condensed air to be gradually discharged through a proper faucet into a pipe connected with the clarifying-tank, and, through theperforated pipes before mentioned,
- the utility of my invention consists in this:
- the constituent elements of lard and tallow (oleine and stearine) have a strong tendency to separate when allowed to cool gradually.
- oleine oleine and stearine
- the oleine makes the tallow oily and ditficult to handle, and very sen sitive to the influence of heat, and the oil, by penetrating the substances in which it is packed, considerably impairs the commercial value of the article. Rapid cooling arrests this tendency to separate, and a device for effectually attaining this result has been a desideratum.
- My invention meets that want.
- What I claim is- The process of passing condensed air through melted tallow, lard, and other fatty substances. for the purpose of cooling, bleaching, and purifying the same, as set forth.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Drying Of Gases (AREA)
- Fats And Perfumes (AREA)
- Separation By Low-Temperature Treatments (AREA)
Description
UNITED STATES PATENT OFFICE.
ROBERT B. BANOROFT, OF BOSTON, MASSACHUSETTS.
IMPROVEMENT IN PROCESSES FOR COOLlNG LARD, TALLOW, &c.
Specification forming part of Letters Patent No. 152,208, dated June 23, 1874; application filed April 28, 1874.
To all whom "it may concern:
Be it known that I, ROBERT B. BANCROFT, of the city of Boston, in the State of Massachusetts, have invented an Improved Process for Cooling Tallow, Lard, &c.; and I do hereby declare the following to be a full and correct description of the same.
This invention relates to that class of processes employed for cooling, purifying, and bleaching tallow and lard while in process of rendering, orwhile in a melted condition and it consists in passing condensed air through these substances.
It is well known that in the process of compressing air much of its heat is thrown ofl',
-but when the compressed air assumes its original volume it rapidly absorbs heat from the medium with which it is in contact, and lowers its temperature in a degree corresponding to the amount of condensation.
To utilize this property of compressed air in the cooling of fatty substances, I introduce into the bottom of the clarifying and cooling tank, otherwise constructed in the usual manner, one or more pipes perforated with holes from one-eighth to one-fourth of an inch in diameter, and connect these pipes with a condensed-air tank, of a size proportionate to the size of the clarifying-tank. I cause the air to be forced into the condensed-air tank by an ordinary air-pump, and when it is sutficiently cooled I cause the condensed air to be gradually discharged through a proper faucet into a pipe connected with the clarifying-tank, and, through theperforated pipes before mentioned,
into and through the mass of melted tallow, lard, 850. As soon as the compressed air is discharged into the melted mass it begins to expand to its original volume, and in so doing abstracts heat from the liquefied material, and rapidly cools it.
The utility of my invention consists in this: The constituent elements of lard and tallow (oleine and stearine) have a strong tendency to separate when allowed to cool gradually. When the oleine separates, it makes the tallow oily and ditficult to handle, and very sen sitive to the influence of heat, and the oil, by penetrating the substances in which it is packed, considerably impairs the commercial value of the article. Rapid cooling arrests this tendency to separate, and a device for effectually attaining this result has been a desideratum. My invention meets that want.
I donot claim passing air of ordinary density through the melted tallow or other fatty matters, as that has been done before; but
What I claim is- The process of passing condensed air through melted tallow, lard, and other fatty substances. for the purpose of cooling, bleaching, and purifying the same, as set forth.
The above specification of my said invention signed and witnessed, at Boston, this 25th day of April, 1874.
ROBT. B. BANCROFT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US152208A true US152208A (en) | 1874-06-23 |
Family
ID=2221620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US152208D Expired - Lifetime US152208A (en) | Improvement in processes for cooling lard, tallow |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US152208A (en) |
-
0
- US US152208D patent/US152208A/en not_active Expired - Lifetime
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