Seed-Grader. Page: 4 of 6
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UNITED STATES PATENT OFFICE0
GROVER C. LEACH, OF BANGS, TEXAS.
SEED-GRADER.Specification of Letters Patent.
Patented Apr. 10, 1917.
Application filed Tune 13, 1916. Serial No. 103,486.
To all whom it may concern:
Be it known that I, GROVER C. LEACH, a
citizen of the United States, residing at
Bangs, in the county of Brown and State of
5 Texas, have invented certain new and useful
Improvements in Seed-Graders, of which
the following is a specification.
This invention relates to seed graders and
has for its object the provision of a simple,
10 inexpensive, durable and efficient machine
by the use of which seeds may be graded
according to their sizes and all seeds of the
same commercial value brought together.
Specifically, the invention seeks to pro-
15 vide a machine in which an air blast may
be utilized to aid the seeds in seeking their
proper compartments and by which the dis-
sipation and loss of the air blast will be pre-
vented.
20 The invention also seeks to provide simple
means for operating the machine and to so
arrange the several parts that repairs may
be easily made when necessary.
The invention is illustrated in the accom-
25 panying drawings and consists in certain
novel features which will be pointed out in
the claims following the detailed descrip-
tion.
In the drawings:
30 Figure 1 is an elevation, partly broken
away, of a machine embodying my improve-
ments;
Fig. 2 is a central longitudinal vertical
section of the same;
35 Fig. 3 is a plan view;
Fig. 4 is an end view;
Fig. 5 is a transverse section;
Fig. 6 is an enlarged detail view of the
spout;
40 Fig. 7 is a detail perspective view of the
agitator employed in the hopper.
Fig. 8 is a detail perspective view.
In carrying out my invention, I employ a
frame consisting of side bars or beams 1, an
45 end bar 2 connecting the same, and suitable
legs 3 for supporting the same. The side
bars are extended beyond the legs at one end
of the frame and upon these extended por-
tions I erect standards or brackets 4 by
50 which a. hopper 5 is supported. A fan cas-
ing 6 is mounted upon the frame adjacent
the said hopper and in the said casing is a
fan 7, the inlet 8 of the said casing being
located at the axial center of the same and
55 outlets 9 and 10 being provided for said
casing at diametrically opposite points, thelower outlet spout 9 directing an air blast
across the lower end or mouth of the hopper,
while the outlet 10 directs an air blast longi-
tudinally of the machine between the retic- 60
ulated cylinder 11 and the cover 12 extend-
ing over the same. Below the hopper 5, I
secure between the side bars 1 a spout or
trough 13 which is inclined downwardly and
forwardly so as to deliver the seed deposited 65
therein into the cylinder 11. The trough is
provided with a door 14 in its bottom which
may be slidably mounted in any convenient
or preferred manner and is intended to be
opened to permit the discharge of seeds 70
which it is desired to prevent passing into
the cylinder. A screen 15 is mounted with-
in the trough or spout and is suspended by
links or bails 16 having their extremities
pivotally journaled in the side bars 1 and 75
having their intermediate portions passing
below and across the screen and held thereto
by lugs 17. A crank arm 18 is journaled
upon the side bars and is pivotally engaged
in one side of the screen so that if the said 80
crank be oscillated, the screen will be recip-
rocated and seeds deposited thereon agi-
tated. This screen is provided with a foram-
inous bottom, as indicated at 19 in Fig. 6,
and is intended to separate one kind of seed 85
from another as, for instance, it frequently
happens that oats and wheat are commingled
and it is, of course, desirable that the oats
should not pass with the wheat into the
grading cylinder. The mixture of seeds is 90
placed in the hopper and will flow there-
from onto the screen 15. The wheat will be
permitted to pass through the screen into
the spout or trough above the door 14 which
is left open when the screen 15 is in use. 95
The wheat will escape by way of the door 14
into any convenient receptacle while the oats
will work over the end of the screen and
drop into the trough below the door 14 and,
consequently, will be directed into the cylin- 100
der 11, as will be readily understood. The
crank arm 18 is connected .by a link 20 with
the depending crank arm 21 at the end of the
agitator 22 and a pitman or connecting rod
23 extends between the said crank arm 21 105
and a gear wheel 24 secured upon the end of
a shaft 25 which is suitably journaled in the
side bars 1 immediately adjacent the end of
the grading cylinder. The agitator 22 con-
sists of a rod or shaft having its ends jour- 110
naled in' the side walls of the hopper and
having its central portion offset, as shown1,222,111.
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Leach, Grover C. Seed-Grader., patent, April 10, 1917; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth858293/m1/4/: accessed June 1, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.