Process of Manufacturing Soap. Page: 3 of 3
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UNITED STATES PATENT OFFICE.
WILLIAM A. GRANT, OF HOUSTON, TEXAS.
PROCESS OF MANUFACTURING SOAP.
SPECIFICATION forming part of Letters Patent No. 471,668, dated March 29, 1892.
Application fled January 28, 1890. Serial No. 338,401. (No specimens.)To al wvom, it iney concejr:
Be it known that I, WILLIAM A. GRANT, a
citizen of the United States, and a resident
of Houston,in the county of Harris and State
5 of Texas, have invented a new and Improved
Process of Manufacturing Soaps, of which the
following is a full, clear, and exact description.
The object of myinvention is to lessen the
time required for the manufacture of soaps
ro and at the same time have all portions of a
mass thereof of uniform character, also to
make more soap from the same amount of fat
or oils than is now done by the ordinary pro-
cesses.
15 In carrying out my invention I may make
use of the mechanism shown in the drawings,
in which-
Figure 1 represents a side view of the ap-
paratus, and Fig. 2 represents a viewat right
20 angles to Fig. 1.
Similar letters represent similar parts in
both figures.
The apparatus shown in the drawings is
substantially that shown in an application
25 for Letters Patent filed by me of even date
herewith and bearing Serial No. 338,400, and
a description thereof is not deemed neces-
sary, other than an explanation of such parts
as more immediately refer to the invention
30 herein set forth.
A representsa mixing-box having a remov-
able lid B, provided with an oblong funnel C,
having a narrow opening in its bottom.
D represents the rotary mixer-shafts with
35 transverse blades b, the side mixer-shafts hav-
ing gearing meshing with a smaller gearing on
the center mixer-shaft, whereby the shafts
may be rotated in different directions and at
different rates of speed.
40 E represents an elevated tank, from which
the liquefied caustic soda is run by means of
a flexible pipe or hose F into the funnel C.
In carrying out my process the first opera-
tion consists in running as much fat, grease,
45 or oil as may be required into a mixing or cool-
ing frame from a suitable melting-tank, the
said fats being melted at a temperature from
100 to 125 Fahrenheit. The cooling-frame
is then placed under the mixing-machine and
50 the triple blades are then lowered into posi-tion. The top and funnel are then placed on
the cooling-frame, when the mixing-machine
is put into motion at a high or low rate of
speed, as the case may require. Then the
caustic soda is run through the hose-pipe on 55
the fats contained in the cooling-frame
through the opening in the funnel, the noz-
zle being moved from end to end of the fun-
nel until a sufficient quantity is sprayed into
the fats or oils, when, owing to the constant 6o
agitation of the latter by the mixing-blades,
all portions of the said fats are brought into
immediate contact with the caustic soda
and other compounds and converted readily
into soap. By spraying the liquid it is more 65
uniformly distributed through the fats and
does not, as it would if poured in or permit-
ted to fall in-a stream on the same spot, as is
the usual practice, eat or cut its way to the
bottom of the frame without being thoroughly 70
brought in contact with every portion of the
grease. When the proper mixing is effected,
which is accomplished in a short time, (about
twelve to fifteen minutes,) the mixer shafts
and blades are raised out of the frame, and 75
the frame-now a cooler-frame-is moved, so
that another mixing-frame may take its place.
The mixed mass or soap is then cooled in the
same frame without being disturbed, thereby
preventing loss or waste of material. 80
What I desire to claim as my invention and
secure by Letters Patent is-
The herein-described process of making
soap, consisting in placing oils and other fatty
ingredients unitedly or individually in a 85
melted but unboiled condition within a re-
ceptacle, incorporating the necessary com-
pounds in said mixture, agitating the com-
bined mass in different directions and at dif-
ferent speeds by regulated mechanical de- 9c
vices, spraying liquid caustic soda over the
surface of the mass while agitating the same,
removing said agitating devices, and allow-
ing the mass to cool without removing it from
the receptacle, substantially as set forth.
WM. A. GRANT.
1WTitnesses:
E. C. CRAWFORD,
C. W. ALSWORTH.
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Grant, William A. Process of Manufacturing Soap., patent, March 29, 1892; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172989/m1/3/: accessed May 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.