Cotton Gin Page: 3 of 5
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UNITED STATES PATENT OFFICE.
ROBERT B. LUMPKIN, OF STORRS, TEXAS.
COTTON-.G IN.
SPECIFICATION forming part of Letters Patent No. 700,347, dated May 20, 1902.
Application filed.October.3, 1900. Serial No. 31,913; (No model.)To ci whomn it m ay concern:
Be it known that I, ROBERT B. LUMJKIN, a
citizen of the United States, residing at Storrs,
in the county of Falls and State of Texas, have
; Invented a new and useful Cotton - Gin, of
Which the following is a specification.
This invention relates generally to cotton-
gins, and particularly to that class wherein
the lint is removed from the gin-saws by a
to blast of air.
The object of the invention is to present a
simply-constructed, thoroughly-efficient, and
highly-durable form of cotton-gin in which
the parts shall be so constructed and assem-
k5 bled as to be readily removable where repairs.
are necessary or where a broken or damaged
part is to be replaced by a new part.
With these and other objects in view, as
will appear as the nature of the invention is
go better understood, the same consists of the
novel construction and combination of parts
of a cotton-gin, as will be hereinafter fully
described and claimed.
In the accompanying drawings, forming a
t5 part of the specification, and in which like
characters of reference indicate correspond-
ing parts, there is illustrated a form of embodi-
ment of the invention capable of carrying the
same into effect, it being understood that the
30 elements herein exhibited may be varied or
changed as to shape, proportion, and exact
manner of assemblage without departing from
the scope of the invention, and in these draw-
ings-
3.5 Figure 1 is a view in sectional elevation of
a cotton- gin characterizing this invention.
Fig..2 is a sectional detached detail view show-
ing the manner of constructing the air-dis-.
charge blast-nozzle. Fig. 3 is a similar view
40 showing a combined air-equalizing and fire-
extinguishing device. Fig. 4 .is a diagram-
matic view in plan, exhibiting a battery of
four gins and a blast-fan and duct to direct
a blast of air against the gin-saws.
45 In the embodiment of the invention herein
exhibited the gin-saws 1 are of the common'
or any preferred form and are mounted on
the usual shaft 2, which has its bearings in
a supporting-frame 3, which may be of any
50 preferred construction.
The breast 4 of the gin,comprising the seed-
board 5 and grate 6, is hinged at its lower sideat 7 to the fraine 3, whereby the breast, with
the grate and seed-board, may be turned back
and rest upon the floor supporting the gin, 55
thereby leaving the saws freely exposed for
purposes of cleaning or to permit of a gang of
saws being lifted from the gin without remov-
ing the feeders 8 at-the top of the stand.
This manner of hinging the breast to the sup- 6c
porting-frame is of great importance,as where
the saws are to be cleaned or removed from
the supporting-frame a great amount of time
and labor will be saved, as when the breast
is turned back to the position described the 65
saws,above pointed out, will be entirely freed
from any obstruction that would hinder ready
access thereto. As the grate and seed-board
are associated permanently with the breast,
the position of these parts will not be dis- 70
turbed when the breast is moved away from
the saws.
The blast-fan 9, which supplies the air for
removing the lint from the teeth, discharges
into a duct 10, which leads from the fan-cas- 75
ing 11, the duct opening into a transversely-
disposed trunk 12, having branches 13 lead-
ing therefrom in a vertical direction, each
branch being provided with a head 14 of a
width corresponding to that of a pair of gins, 8o
as clearly shown in Fig. 4, the, forward ends
of the heads being partially closed by a down-
ward-projecting and slightly outward inclined
headboard 14w. Secured to the headboard 143
and to the lower side of the head are the dis- 85
charge-nozzles 15, the discharge - mouths of
which are elongated slots, the front wall of
the nozzles being slightly curved to the rear,
as shown in Fig. 1, whereby to direct a blast
of air downward:against the sides and periph- 90
eries of the gin-saws in the general direction
of the rotation thereof and at a tangent to
the teeth of the saws, by which arrangement
the lint is blown directly from the teeth and
downward and outward therefrom.. The lips 95
a of the discharge-nozzles are connected by
braces b, spaced at appropriate distances
apart, as shown in' Fig. 2, the braces.operat-
ing to hold the lips properly.separated and to
prevent their becoming displaced. . 100
The offtake chutes or conveyers 16, which
connect the lint-chamber and the condensers,
are in elevation approximately horn-shaped-
that is to say, curved in a vertical sense-
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Lumpkin, Robert B. Cotton Gin, patent, October 3, 1900; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth511443/m1/3/: accessed June 24, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.