US256715A - Lard and tallow tank - Google Patents

Description

2 Sheets--Sheet 1.

(No Model.)

J; K. MARTIN. LARD AND TALLOW TANK.

Patented Apr. 18, 1882.

(No Model.) 2 Sheets-Sheet2. J. K. MARTIN.

LARD AND TALLOW TANK.

AW n u :w w m E M. I N w y N. PETERS. Photo-Lithography. W-fihinglun. o a

FFICE.

PATENT JAMES K. MARTIN, OF CHICAGO, ILLINOIS.

LARD AND TALLOW TANK.

SPECIFICATION formingpart Of Letters Patent N- 256,7l5, dated April 18, 1882.

Application filed February 18, 1882. (No model.)

.to the letters of reference marked thereon,

which form a part of this specification.

This invention relates to the separation of lard or tallow from all the water, blood, salt, fragments of membranes, and other impurities by boiling and condensation; and it is my ohject to accomplish this in a series of tanks which may be used alternately for rendering or purifying.

Therefore my invention consists of the devices and combinations of devices hereinafter described and specifically claimed.

In the accompanyingdrawings,Figure 1 represents a front elevation of two of a series of tanks; Fig. 2, a sectional plan of the same, and Fig. 3 an edge view of one of the tanks. Like letters designate corresponding parts in all the figures.

A and A denote two of a number of tanks, which are made of the usual construction, one exactly like the other, and each is to be provided with a gate or man-hole on top for fillin g with the raw material and with a valve or gate in the bottom for drawing off the water and for removing bones and other refuse; also, with a safety-valve on top, all of which attachments are made in any usual manner, and therefore are not shown in the drawings.

B is a pipe connecting with a steam-generator and having drop-branches C C, one to each tank, which connect at their lower ends with T-couplings a a, that communicate with the bottom of the tanks through check-valves I) I), and the admission of steam to which is regulated by stop-valves 0 0. Each branch C C communicates also with the top of the tanks through a stop-valve, (Z, and a check-valve, and at an intermediate point a pipe, f f, leads off each branch C 0 around and to the rear of the tanks, where such pipe enters the tank and connects with a curved pipe, 9, that is closed at both ends and is perforated at the side toward the front of the tank with a row of small holes. Each pipe ff is provided also with a stop-valve, h h, and a check-valve, i i.

D is a cold-water pipe, which is connected with a force-pump and has drop-branches E E, one for each tank. These branchcsE Econnect with the T-couplings a a at the bottom of the tanks, and have each a stop-valve, j. These branches EE communicate also with the top of the tanks, each through a stop-valve, 7t, and a check-valve, I.

F is the main lard or tallow pipe, which by branches GG communicates with the several tanks at an intermediate point, each branch having a valve or stop-gate, m m, that is operated by a lever. Three faucets, n, n, and 12 are arranged at different elevations for drawing off the lard or tallow; and 0 0 are gage-cocks.

Now, by describing my process and operation of rendering and purifying lard or tallow the arrangement of the several pipe-connections will be fully understood.

ThetankAhaving been filled through thetop with raw lard or tallow or with salt trimmings as they come from the packing-houses, I turn on steam through valve cand let the material cook from eight to twelve hours. After the mass has been thus cooked sufficiently I shut off the steam and let it settle for about thirty minutes, and then by opening valves m and m the pressure of steam which is still in the tank A will force the larger portion of lard or tallow that has been separated through pipe F and through the branches G and G into tank A. Next I admit cold water into the bottom of the tank A through valve j until said-tank is filled sufficiently to show water at gage-cock 0, when I shut off the water and open valve h for admitting steam into pipe f to issue through the perforations of curved pipe 9, when all the lard and tallow that is still remaining on the water will be skimmed and concentrated at the opening to pipe G, and will be forced through pipes G and G and F into the tank A by admitting steam into the top of tank A through valve (1. Now,-

after gage-cock 0 shows nothing but pure water, so as to indicate that all the lard and tallow has been withdrawn, the water is let out from tank A, and the bones and other refuse is removed through the gate or man-hole below, when said tank is ready for a new charge of raw material. After a sufiicient quantity of lard or tallow has thus been collected in tank A from one or several rendering-tanks, I turn on steam from the bot-tom by opening valve 0, and allow the material to cook again from one to two hours. Next I let in cold water from top through valve 70, while the steam is still admitted from the bottom until the lard or tallow is raised as high as desired, and during this operation I open the safety-valve to allow the escape of all repugnant gases, and after closing the valve k and the safety-valve I boil the materialagain from one to two hours, then shut off the steam, allow the material to settle, and then draw otf the now pure lard or tallow through any one of the faucets n, a, or a into a cooling-tank.

Heretofore the boiling and separating of lard or tallow was done in a single tank, when the material in it being kept mixed during the en tire process with the bones and other impurities until allowed to cool down and settle, such lard or tallow retained a peculiar twang, that made it untit for many purposeswithout further manipulations and treatment with chemicals for neutralizing and purifying, besides that the skimmings could not be utilized and were' wasted.

\Vith my improved process every particle of lard or tallow is extracted and separated from the refuse, and by the boiling in a second tank and the admission of cold water from the top simultaneously with steam from the bottom said water in passing through the boiling material will clean and concentrate the particles, and thus will purify the product, so as to have a sweet and healthy taste and fine color without the application of any chemicals.

What I claim is l. The herein-described arrangement of a series of tanks, A A, each connected with a purpose set forth.

3. The combination of a series of tanks, A A,each connected with the lard or tallow pipe F by branches G G, having valves m and m, and each tank containing a curved and perforated pipe, that is connected by a. branch,

f, with the steam-pipe B, all substantially as and for the purpose set forth.

4. The combination, with a series of tanks connected by pipe F and branches G and G, having valves m m, of the steam pipe B and water-pipe D, both connected by branches with the top and bottom of all the tanks and pro vided with suitable valves, substantially as and for the purpose set forth.

5. The combination of a series of tanks, A A, each connected with pipe F by branches G G, having valves m m, such tanks being also connected at top and bottom with steampipe B by branches 0 0', having valves (1 d and 0 c, and having perforated pipes gg, that connect the pipesff with the branches 0 C, and have valv'es h h, and with water-pipe I) by branches E E, having valves j and 7; 1;, all substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I atfix my signature in presence of two witnesses.

JAMES R. MARTIN.

\Vitnesses:

F. W. KASEHAGEN, F. U. AnAMs.

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