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Патент USA US2405630

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Aug. 13, 1946.
Filed April 20, 1944
' 2,405,630
Patented Aug. 13,- 1946
cuL'rIvA'roR WHEEL
Andrew B. Allen, Ochre River, Manitoba, Canada
Application April 20, 1944, Serial No. 531,894
3 Claims.
(Cl. 97-217)
My invention relates to cultivator wheels de
ceed to perform a deep curvature, so that the
signed to be mounted in line upon a shaft posi
Wheel as-a-whole may be properly described as
tioned diagonally to the direction of travel, pre
cisely in the manner that conventional cultivator
The outer ends 8 of the spokes are rabbeted
discs are mounted, an object of this invention 5 to receive the rim 9, which is secured to the
being to provide a device of the character here
spokes by means of the nut and bolt assemblies
within described by means of which a more effi
cient weed exterminating operation vmay be car'
ried out in one stroke of the implement to which
my wheels are attached.
A further object of my invention is to provide
in, the rim being edge-sharpened as clearly illus
trated in» the accompanying Figure 2.
Although the spokes 6 may beof roundtrans~
10 verse cross-section, 0r of any other desired trans
verse cross-section, it is to be noted from Figures
3 and 4 that the spokes are shaped to a trans
verse cross-sectional con?guration such as pro
vides a longitudinal edge H to facilitate the
vator, is of rugged construction, and is provided 15 penetration or entrance of the spokes into the
with a detachable rim capable of being sharp
ground while the wheels are rotating askew in
a device of the character herewithin described
which is simpli?ed, self -cleaning, can be attached
readily to the diagonal shafthof any disc culti
ened or replaced.
With the above more important objects in view
and such other minor’objects as may appear as
the direction of the arrow I2 when the cultivator
superstructure is being pulled in the direction‘
of the arrows t3.
the speci?cation proceeds, my invention consists 20 It is-to ,7 be understood that my cultivating
essentially in the arrangement and construction
wheels rotate just as do conventional cultivating
of parts all as hereinafter more particularly de
discs when mounted at spaced intervals upon a
scribed, reference being had to the accompany
disc shaft 3 having the conventional ground wheel
ing drawing, in which:
l4‘ keyed to the end thereof. However, since I
Figure l is a view of one of my cultivator 25 deem it desirable for the purpose of reducing draft
wheels in the plane of its rotation.
that the spokes should penetrate the ground with
Figure 2 is a section on the line 2-—2 of Figure 1.
as little resistance as possible, it is to be under
Figure 3 is a section on the line 3-—3 of Figure 1.
stood that the longitudinal edges II are so posi
Figure 4 is a schematic plan embodying a skele
tioned that they will enter the ground ?rst as the
tal representation of the essential parts of a disc 30 wheels roll forward.
cultivator superstructure, viz. the draw bar, di- '
Since the cultivator wheels are positioned di
agonal shaft, and the ground wheel thereof, and
agonally, or askew with respect to the direction
illustrating my cultivator wheels in situ thereon.
of travel of cultivator superstructure, it will be
In the drawing like characters of reference in
apparent that in order to design spokes of a
dicate corresponding parts in the different ?gures. 35 transverse cross-section such as will reduce draft
To describe ?rst one of my cultivator wheels
to a minimum, the longitudinal edges H thereof
per se, the same will be seen to comprise a con
centric hub ! provided with a squared central
aperture 2 designed to engage the conventional
must be on the convex side of the neutral plane
of the wheel as-a-whole, and such plane I have
indicated in the accompanying Figure 2 by the
squared, horizontal, and diagonally disposed disc 40 numeral l5. In fact, as a consideration of Fig
ure 2 will indicate, the heavy boundaryline E6
formed integral with the hub, and being pro
of the downwardly extending spokes B repre
shaft 3, a sleeve 4 functioning as a spacer being
vided for the purpose of spacing the several wheels
sents the edge I l of that spoke.
In the accompanying Figure 4, I have en
accompanying Figure 4, the sleeve 4 functioning 45 deavored to indicate the manner in which the
in precisely the same manner as the spacing
edges H of the spokes enter the ground ?rst,
sleeves which are commonly inserted between
Figure 4 embodying a schematic representation
each conventional cultivating disc when these
of the essential parts of a conventional cultivat
5 a desired distance apart as illustrated in the
are mounted on the shaft 3.
ing disc superstructure required for crientating
Radiating from the huh I are spokes 6, of 60 one’s mind to the cross-section of, my spokes,
which any desired number may be provided, 211- ‘_
though I have found that ?ve is, for most con- ‘
and in this ?gure I have included a draw bar
assembly 15', whereby the implement including
ditions the most satisfactory number.
the diagonal shaft 3 is drawn in the direction
The spokes 6 are preferably straight between
of the arrows 13.
the limits 1 (see Figures 1 and 2), but then pro 65 In Figure 4 I have illustrated several culti
vating wheels schematically, but have included in
one of them a fragmentary representation of a .
portion of a wheel rim 9 and a spoke 6, in con
nection with which it should be understood that
the fragment of spoke illustrated is projecting
downwardly, ‘being in the position it would occupy
when the lower curved end thereof is submerged
in the soil. A consideration of the foregoing de
tail in association with the band-arrow "5 will
clearly indicate that as the spokes successively
rotate and enter the ground with the longitudinal
edges II in advance, an ef?cient scouring action
will take place along the surfaces I’! and I8
positioned diagonally to the direction of travel,
said wheel consisting of a hub, spokes radiating
therefrom normal to the rotary axis of said
wheel for a substantial portion of their total
length and then curving, a rim connected to the
outer ends of said spokes, the wheel as-a-whole
thus having the characteristic of concavity, said
rim having an edge-sharpened outer perimeter.
2. A concave-o-convex cultivator wheel for at
tachment to a shaft positioned diagonally to the
direction of travel, the concave side thereof being
the leading side, said wheel consisting of a hub,
spokes radiating therefrom, said spokes, when
which converge towards the edges H, whereby, - viewed in transverse cross-section, having a
the soil will be parted with a minimum of re‘ 15 boundary which is rounded for a portion of its
length but converges to a point substantially op
posite the rounded portion to provide a longi
tudinal soil entering edge on the convex side of
sociation with the accompanying drawing, it will
said wheel, said rounded portion being on the
become apparent that I have succeededv in de-v
?ning a cultivator wheel structure which will ma 20 concave side, said spokes being curved medially
uponthe length thereof and a rim connected to
terially reduce the draft in comparison for in
the outer ends of said spokes, said rim having, an
stance with the conventional solid disc cultivator,
edgeesharpened outer perimeter.
which will sever and out off weed-growth in its
3. A concave-o-convex cultivator wheel for at
advance with much less agitation of the soil than
is'the'case with’ the conventional disc cultivator, 25 tachment to a shaft positioned diagonally to the
direction of travel, the concave side thereof being
and which will, in addition, be self-scouring or
the leading side, said wheel consisting of a hub,
self-cleaning by permitting the soil to escape
spokes vradiatingtherefron'i normal to the rotary
between the spokes.
sistance thereby.
From a consideration of the foregoing in as-.
axis- of said wheel, for. a substantial portion of
Since, various modi?cations can be made in my
invention as hereinabove described and many ap 30 their total length, and then ‘curving, a. rim con
parently widely different embodiments of‘ same
made within the scope of the‘ claims without
departing from such spirit and scope, it is in
tended that all matter contained in theaccom
panying, speci?cation shall be interpreted as il
lustrative only and not in a limiting sense’ and
I desire only such limitations placed thereon as
nected to the outer ends of said spokes, said
spokes when viewed in transverse cross-section
having a boundary which is rounded for a por
tion of, its length but converges. to a point sub
stantially opposite the rounded portion to provide
a longitudinal soil entering edge on the convex
are speci?cally expressed in the accompanying
side of said wheel, said rounded portion being
oil-the concave side, said rim having an edge
sharpened outer perimeter.
What I claim as my invention is:
l. A cultivator wheel for attachment to a shaft
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