Method and Composition for Reclaiming Gummer and Linter Files. Page: 1 of 2
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UNITED STATES PATENT OFFICE.
LANDON T..LOCXETT, OF BRENHAM, TEXAS.
METHOD AND COMPOSITION FOR RECLAIMING GUMMER AND LINTER FILES.1,372,303.
No Drawing.Specification of Letters Patent.
Patented Mar. 22, 1921.
Application filed June 17, 1920. Serial No. 389,792.
To all whom it may concern:
Be it known that I, LANDON J. LocxErr,
a citizen of the United States, and a resi-
dent of Brenham, county of Washington
5 and State of Texas have made an Invention
Appertaining to M'ethods and Compositions
for Reclaiming Gummer and Linter Files;
and I do hereby declare the following to
be a full, clear, and exact description of the
10 invention, such as will enable others skilled
in the art to which it appertains to make
and use the same.
My invention has for its object to reclaim
the files used in sharpening linter saws that
15 are utilized in cutting the lint from cotton
seed after the long fiber has been removed
from the seed. In 'this operation the saws
become gummed with the cotton seed oil
that exudes from the cotton seed. When
20 the saws become dull it is necessary to file
the saws to sharpen them and the gum that
collects on the saws quickly gums the files
and inasmuch as this gum and the filings
harden in the file, the files soon become use-
25 less and are soon discarded. In reclaiming
the files, the files ordinarily are recut, which
is a costly proceeding and makes the re-
claimed files quite as expensive as the origi-
nal cost of the files.
30 By my invention I have provided a com-
position and a process whereby the gummer
and linter files for sharpening linter saws
may be readily reclaimed at a very low cost,
thus saving the cost of reformation of the
35 files.
In reclaiming the gummer and linter files
in accordance with my invention, the files
are boiled a short time in a solution of sale-
ratus in water. I find it preferable to boil
40 the files at the first reclaiming about one-
half hour in a solution of about four ounces
of saleratus in about one quart of water until
the files are cleaned. During subsequent re-
claimings of the files I find it desirable to in-
45 crease the length of time of boiling the files
to one hour or more, according to the num-
ber of preceding reclaimings that have been
performed upon the files.
The files are then immersed in a solution
50 of ammonium sulfate in water acidified with
sulfuric acid. I find it preferable to im-
merse the files about four hours, in the first
reclaiming of the files, in a solution -of about
one-tenth of an ounce of granulated am-
65 monium sulfate to about one quart of rain
or distilled water, to which is added aboutfour' ounces of the best commercial grade
of sulfuric acid. During the second reclaim-
ing the files are immersed in the solution
about six hours and, during the third re- 60
claiming, the files are immersed about eight
hours. In each reclaiming the strength of
the solution should be increased by ten per
cent., that is, for each reclaiming the amount
of the granulated ammonium sulfate and 65
the amount of the sulfuric acid should be in-
creased by ten per cent.
At the termination of the four or six or
eight hour immersions, the files should be
washed and dried quickly and then they 70
may be dipped in sperm or sweet oil so as
to prevent further action of the acid solu-
tion. By this method and composition the
files may be reclaimed three or four times.
If desired, the granulated ammonium sul- 75
fate may be omitted from the solution and
the dilute sulfuric acid alone used after the
files have been boiled in the saleratus solu-
tion the required length of time.
I claim: 80
1. A process of reclaiming gummer and
linter files, which consists in boiling the
files in a solution of saleratus and then im-
mersing the files in dilute sulfuric acid.
2. A process of reclaiming gummer and 85
linter files, which consists in boiling the
files in a solution of saleratus and then im-
mersing the files in dilute sulfuric acid and
covering the files with oil.
3. A process for reclaiming gummer and o
linter files, which consists in boiling the
files in a solution of saleratus and then im-
mersing the files in a solution formed of
diluted sulfuric acid and granulated am-
monium sulfate. 95
4. A process for reclaiming gummer. and
linter files, which consists in boiling the
files in a solution of saleratus and then im-
mersing the files in a solution formed of
dilute sulfuric acid and granulated ammo- 100
nium sulfate and covering the files with oil.
5. A process for reclaiming gummer and
linter files, which consists in boiling the
files in a solution of about four ounces of
saleratus to about one quart of water and 105
immersing the files in a solution formed of
about one-tenth of an ounce of granulated
ammonium sulfate in about one quart of
water which has been acidified with about
four ounces of sulfuric acid. 110
6. A process for reclaiming gummer and
linter files, which consists in boiling the
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Lockett, Landon J. Method and Composition for Reclaiming Gummer and Linter Files., patent, March 22, 1921; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1257604/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.