Stock Food and Method of Preparing the Same Page: 1 of 2
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UNITED STATES PATENT OFlICE.
THOMAS BAILEY WALKER, OF AUSTIN, TEXAS.
STOCK FOOD AND METHOD OF PREPARING THE SAME.1,140,638.
Mo Drawing.Specification of Letters Patent.
Patented May 25, 1915.
Application filed May 29, 1913. Serial No. 770,736.
To all whom it may concern:
Be it known that I, THOMAS BAnaY
WALKER, a citizen of the United States, re-
siding at Austin, in the county of Travis
5 and State of Texas,. have invented certain
new and useful Improvements jin Stock
Food and Methods of Preparing the Same,
of which the following is a specification.
This invention relates to the process of
10 manufacturing stock feed from organic mat-
ter containing cellulose and the products re-
sulting from this process.
Broadly stated, my invention consists of
treating finely divided organic matter con-
15 taining cellulose with certain acids under
pressure, thereby freeing the cellulose and
other carbohydrates from various resistive
incrusting substances by. breaking up .the
latter and rendering the cellulose porous,
20 friable and converting a part of the cellulose
into glucoses and other carbohydrates which
may be more readily absorbed by an animal
in feeding.
The object of this-invention is to produce
.25 at a low cost a stock food of greater food
value from waste materials containing cel-
lulose, such as, sawdust, wood,' tanbark,
grasses, husks and hulls of grain and plants,
bagasse, straws, stalks of plants, low grade
3o fibrous hays, etc., a large number of which
have very little real nutritive feedingvalue,
for the reason that the cellulose and other
carbohydrates are held together with in-'
crusting substances and in this resistive
35 form practically pass through an animal
unchanged, simply giving bulk and waste
when mixed with other more assimilable
and concentrated foods. 'In my invention
the cellulose and other carbohydrates are
40 entirely .dissociated from the. various in-
crusting substances, the whole mass being
rendered porous and friable, while 'a part of
the cellulose is converted into glucose and
other carbohydrates of a much 'greater nu-
45 tritive feeding value, thereby converting a
material of very low food value into one
which can-readily be absorbed by an animal
in feeding with the minimum of waste.
With this object in view, my invention
50 consists in the matter to be hereinafter de-
scribed and claimed.
The process of manufacture can be car-
ried out in several ways, but it is expressly
to be understood that the process 'may be
55 varied to meet the different conditions de-
sired- in the 'finished product and the dif-ferent classes of materials to be treated.
In general practice' the material is treated
as hereinafter described.
In carrying my invention into practical 60
effect the organic matter containing cellu-
lose is reduced to a fine state of division in
any suitable manner by crushing,, grinding
or shredding. Should excessive amounts of
tannin be present the same is removed by 65
leaching in the usual way. The mass is
then treated with a suitable acid liquor
under pressure and in process of heating in-
crusting. substances are broken up and any
resinous matter is eliminated, the mass is 70
rendered more porous, friable and absorb-
ent and a part of the cellulose is convert-
ed into glucoses and- other carbohydrates.
After neutralization with an alkali the sac-
charine liquid is preferably drawn off and 75
evaporated in a triple effect and then re-
turned to the treated product or the whole
mass may be evaporated together in any
suitable evaporating apparatus.
By using hydrochloric acid in this process 80
instead of sulfurous or sulfuric acid and.
neutralizing with caustic soda I obtain salt
which makes the food more palatable than
when lime is used as a neutralizing agent.
While the food described is a complete 85
product, it.will be understood that it may be
mixed with other foods, to suit the views of
different users, or the condition of the stock
to be fed.
Claims. 90
1. The process of making stock food con-
sisting in subjecting comminuted cellulose
waste materials to the action of acid liquors
under heat and pressure thereby breaking up
resistive incrusting substances of the cellu- 95
lose, partially converting the cellulose into
saccharine bodies and rendering the material
porous and friable, then removing the mois-
ture as described.
2. The process of making stock food con- 100
sisting in subjecting comminuted cellulose
waste materials to the action of acid liquors
under heat and pressure thereby breaking up
resistive incrusting substances of the cellu-
lose, partially converting the cellulose into 105
saccharine bodies and rendering the material
porous and friable, freeing from the re-
sulting product any resinous bodies and then
removing the moisture as described.
3. The process of making stock food con- no
sisting in subjecting cellulose to the action
of a hydrolyzing solution to partially con-
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Walker, Thomas Bailey. Stock Food and Method of Preparing the Same, patent, May 25, 1915; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859182/m1/1/?q=%22%22~1&rotate=270: accessed July 9, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.