Grain-Drill. Page: 2 of 2
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UNITED STATES PATENT OFFICE.
WILLIAM G. LAWRENCE, OF AGNES, TEXAS.
GRAIN-DRILL.
SPECIFICATION forming part of Letters Patent No. 499,025, dated June 6, 1893.
Application filed December 13, 1892. Serial No, 454,982, (No model,)To all wlon it inay conlcenr,:
Be it known that I, WILLIAM G. LAWRENCE,
a citizen of the United States, and a resident
of Agnes, in the county of Parker and State
5 of Texas, have invented certain new and use-
ful Improvements in Grain-Drills; and I do
hereby declare that the following is a full,
clear, and exact description of the invention,
which will enable others skilled in the art to
o0 which it appertains to make and use the
same, reference being had to the accompany-
ingdrawings, which form a part of this speci-
fication.
My invention relates to grain drills, the ob-
15 jectbeing toprovide an improved construction
of the same, whereby I secure important and
superior advantages with respect to si mplicity
and efficiency.
The invention consists in the novel con-
20 struction and combination of parts hereinaf-
ter fully described and claimed.
In the accompanying drawings: Figure 1
is a sectional elevation of an ordinary grain
drill showing my invention applied thereto.
25 Fig. 2 is a central transverse section of one of
the grain wheels removed, on an enlarged
scale. Fig. 3 is a side view of the same, the
disk or annular plate being removed.
In the said drawings the reference numeral 1
30 denotes the frame, 2 the supporting and driv-
ing wheel, 3 the tongue, 4 the hopper, 5 the
hollow share, and 6 the seed spout, all of
which may be of any ordinary or suitable con-
struction.
35 The numeral 7 denotes the feed - wheel,
mounted upon the shaft 8, extending trans-
versely across the machine underneath the
hopper and rotated by suitable gearing con-
nected with the driving-wheel. The feed-
40 wheels project up through slots in the bottom
of the hopper as usual. These feed-wheels
each consist of a metal disk having a central
hub 9, through which the shaft 8 passes. Sur-
rounding this hub is an annular recess 10 to
45 receive the sectional washers 12.The numeral 13 designates a series of ra-
dial slots communicating with said recess, in
which are seated gravity slides 14, provided
with stems 15, which project into radial aper-
tures or holes 16, which receive the seed from 50
the hopper. A covering disk or plate 17is se-
cured to one side of the wheel by means of
screws or otherwise, said side being recessed
so as to form a seat therefor.
The operation is as follows: As the feed- 55
wheels are rotated, the seed apertures in the
peripheries thereof are successively brought
into the hopper, when the slides falling by
gravity allow the seed to enter. As the
wheels continue their rotation the seed aper- 6o
tures come in line or register with the seed
spouts when the slides will fall outwardly and
the stems thereof will force the grain out of
said apertures into the seed spouts. The
washers 12 which regulate the play of the 65
slides and consequently increase or decrease
the area of the seed apertures, consist of seg-
mental pieces of metal or other suitable ma-
terial. Bydecreasingor increasing the num-
ber of these segments the play of the slides is 70
regulated and more or less grain deposited in
the seed apertures. These feed wheels can
be readily applied to the ordinary grain drills
now in use.
Having thus described my invention, what 75
I claim is-
A feed-wheel for grain drills consisting of
the disk having a central hub, an annular re-
cess surrounding the same, the segmental
washers, the radial slots, the radial seed aper- 8o
tures and the gravity slides, provided with
stems, substantially as described.
In testimony that I claim the foregoing as
my own I have hereunto affixed my signature
in presence of two witnesses.
WILLIAM G. LAWRENCE.
Witnesses:
IH. A. MIDDLETON,
J. J. NELSON.
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Lawrence, William G. Grain-Drill., patent, June 6, 1893; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth173437/m1/2/: accessed July 2, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.