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UNITED STATESPATENT OFFICE.
JAMES WILSON SMITH, OF TROUPE, TEXAS.
HARROW=TOOTH.No. 800,505.
To alli whon it may concern:
Be it known that I, JAMES WILSON SMITH,
a citizen of the United States, and a resident
of Troupe, in the county of Smith and State
5 of Texas, have made certain new and useful
Improvements in Harrow - Teeth, of which
the following is a specification.
My invention is an improvement in har-
row-teeth; and it consists in certain novel con-
10 structions and combinations of parts herein-
after described and claimed.
Referring to the drawings forming a part
hereof, Figure 1 is a side elevation, partly in
section, of a harrow provided with my im-
15 proved tooth; and Fig. 2 is a perspective
view of a single tooth.
In the practical application of my inven-
tion I provide a frame A of ordinary constIuc-
tion and comprising longitudinal and cross
20 bars a. The bars may be arranged in the or-
dinary A shape or rectangularly, as desired.
A plurality of teeth B are secured to the bars
of the frame by bolts b , traversing the bars
and an angular portion of the tooth. Each
25 of the teeth B comprises a convex shank b,
terminating in a convex blade b', having its
edges cut obliquely away, as at b2, to form a
point, and one side of the blade is extended
upwardly and outwardly to form a concavo-
30 convex moldboard b3, whose outer edge b4
forms a continuation of the oblique edge of
the blade. A brace b5 is secured to the rear
face of the blade and extends upwardly and
backwardly to the top of the bar a, to which
35 the tooth is secured, and has formed in the
end thereof an eye b6, engaging the bolt b
and secured by the nut b7.
While I have shown my improved tooth as
applied to a harrow, I do not limit myself to
40 this construction, since it is evident that the
tooth is equally applicable for use in culti-
vators.
In the present instance I have shown my
improved tooth as constructed from a single
45 piece of steel, with the shank, blade, and
moldboard integral, and this is the pre-
ferred form of construction; but the blade
may be formed of a separate piece, or the
shank, blade, and moldboard may be each
50 formed separately.
Among the advantages of my improve-
ment may be mentioned a more thorough
cultivation and pulverization of the soil. APatented Sept. 26, 1905.
closer cultivation of crops may be also at-
tained by its use. When used in a cultiva- 55
tor, a much more thorough eradication of
weeds is secured than by the use of the ordi-
nary cultivator-point, since the weeds are
cut off beneath the surface of the ground
and are turned under the dirt instead of be- 6o
ing merely scratched, as with the ordinary
construction.
While I have shown and described my in-
vention as applied to the ordinary form of
harrow, it will be evident that by using a 65
properly-curved shank it is capable of being
used with spring-toothed harrows and culti-
vators, the brace, however, being omitted
when so used.
Having thus described my invention, what 70
I claim as new, and desire to secure by Let-
ters Patent, is-
1. In a harrow, the combination of a
frame a plurality of teeth secured to the
frame, each comprising a shank, a convex 75
blade integral with the shank and cut away
obliquely to form a point, a moldboard ex-
tending upwardly and outwardly from one
side of the blade, its outer edge forming a
continuation of the obliquely-cut edge of the 8o
blade, and a brace connecting the rear of the
blade with the frame.
2. In a harrow the combination of a
frame, a plurality of teeth secured to the
frame each comprising a shank, a convex 85
blade integral with the shank and cut away
obliquely to form a point, and a moldboard
integral with the blade, its outer edge form-
ing a continuation of the obliquely-cut edge
of the blade. 90
3. In a harrow, the combination of a
frame, a plurality of teeth secured to the
frame each comprising a shank a convex
blade integral therewith and a moldboard
extending laterally from the convex blade. 95
4. A harrow-tooth, comprising a shank, a
convex blade integral therewith, and cut
away obliquely to form a point, a laterally-
extending moldboard on the convex blade,
the outer edge of the moldboard forming a ioc
continuation of the oblique edge of the blade.
JAMES WILSON SMITH.
Witnesses:
J. H. GRIFFIN,
M. M. JOYNER.Specification of Letters Patent.
Application filed May 22, 1905, Serial No. 261,590.
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Smith, James Wilson. Harrow-Tooth, patent, September 25, 1905; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508211/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.