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Dec. 31, 1946.
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DQR. BOMFORD
l _
2,413,429
IMPLEMENT -0R MACHINE FOR HOEING
Filed Sept. 23, 1944
Fiyi ~A
2 Sheets-Sheet 1
L
ATTORNEYS
Dec.,3l, 1946.
D. R. BoMFoRD
2,413,429
IMPLEMENT OR MACHINE FOR HOEING
Filed Sept. 25, 1944
2 SheetsfSheet 2
INVENTOR
ATTORNEYS
2,413,429
Patented Dec. 31, 1946
UNITED STATES PATENT OFFICE
2,41a42o`
IMPLEMENT OR MACHINE FOR HOEIÑG‘
Douglas Raymond Bomford, Pi'tchìll, near'
Evesham, England
Application September 23, 1944, SerialNo. 555,511
In Great Britain November 18, 1943
'7 Claims.
1
This invention has reference to implements or
machines employed in hoeing operations and in
order that the invention may be the better under
stoodI remark that in the hoeing of land on
(Cl. 9’7-154)
eñìciency than with such implements as hereto
fore constructed or proposed.
The invention resides in an implement or ma
which the crop under cultivation is sown or
planted in wide rows and with the plants in the
respective rows set at fairly wide intervals apart
the hoeing of the land which becomes necessary
or -desirable from time toy time during the rais
_ing of a crop involves two distinct operations,
namely one whereby the weeding and loosening
of the earth between the successive rows is ef
fected, which is known as inter-row hoeing, and
2
by the performance of the hoeing operations can
be effected with considerably greater >facility and
chine for the purpose aforesaid characterised
broadly in that the arms or members which carry
the horizontal or substantially horizontal blades
or shares proper are operated for eiîecting the
requisite relative motions of the said blades or
shares when the implement or machine is in use,
through the medium of pedal actuated mecha
nism, the said pedal actuated mechanism having
in association therewith hand operable means for
the other, technically known as inter-plant hoe
steering
the blades into and maintaining them in
ing, whereby the hoeing operation is effected on 15 the desired path between the plants during the
the strips of earth which separate each succes
traverse ofthe machine.
y
sive plant in a row.
The invention further resides in certain details
The inter-row hoeing is commonly performed
of construction of parts of the mechanism here
by a horse or tractor drawn implement and the
inafter described and in the implement or ma
inter-plant hoeing by hand tools, but it has been
chine as a whole, whether designed to operate on
proposed to effect the inter-plant hoeing by an
a single row only on each traverse of the ma
implement or machine embodying inter alia two
chine, or, by providing a duplication or multipli
members so pívotally mounted on a traversable
cationvof the parts such as are hereinafter de
frame and having operating means associated
scribed on a common supporting frame, to oper
therewith that they can .beV swung towards and 25 ate on a plurality of adjoining rows on each trav
away from each other, each of the said members
erse ofthe machine.
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being furnished at 'its lower or acting end with a
A convenient embodiment of the invention will
horizontally, or substantially horizontally, dis
be further and more particularly described with
posed blade or share proper which projects there
from in the direction of the middle longitudinal
reference to the accompanying drawings, where- 1
plane between the members the length of the said
m:
blades or shares being such that their inwardly
ing machine embodying improvements in accord
Figure l represents in plan an inter-plant hoe
presented ends normally somewhat overlap so
ance with the present invention and wherein the
that the blades co-_act to afford a continuous cut
machine is designed to operate on three rows
35
ting edge between the members.
for each traverse of the machine, two of the mech
In the use of such inter-plant hoeing imple
anisms provided for effecting the hoeing opera
ments or machines the machine is traversed along
tions being shown in the said figure, the third be
the row to be hoed with the two blade-carrying
ing broken away in View of the limitation im
members disposed one on each side of the row and
on the sizeof the sheet,V portions of the
the co-acting blades lying in overlapping rela 40 posed
frame members hereinafter referred to being
tionship across the row so that in the forward
also broken away for the same reason.
motion of the machine they shear the weeds and
Figure 2 is a side elevation, partly in section
loosen the soil between the plants, andas the
and viewed in the direction of the arrow- in
blades come up to each successive'plant in the
1.
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row the actuating mechanism >is operated so as 45 Figure
Figure 3 is a fragmentary-view, showing a por
to swing said members outwardly or to such posi
tion of one ofthe tines and a caster wheel for
tion relative to each other that the blades are
supporting it.
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thereby moved from their overlapping condition
In the embodiment of the invention illustrated
and a gap is formed between their inner or pre
the frame` structure or carriage of the machine
sented ends so that they can be steered past the 50 and whereon the plurality of pairs of blade car
stems of the plants without liability to the sev
rying arms and their operating mechanisms are
ering of the plants from the roots thereof.
mounted for effecting the traction thereof is of
The present invention has for its object to pro
vide an inter-plant hoeing implement or machine
simple and economical in construction and Where
55
rectangular formation and embodies longitudi
nally extending side members denoted by the rei
2,413,429
3
4
erence 3 and one only of which is seen in the
nished on its rear face with a tubular portion
Ma the axis of which is vertical and which affords
a bearing for a pin or spindle I7 carrying a hori
zontally disposed plate I‘la to which the front
ends of a pair of |handles i3 associated with the
mechanism for eifecting the steering thereof, are
fixed.
The spindle l1 is retained in the bearing lt by
a cotter pin passed through the upper end of
the spindle which projects above the bearing
plan Figure 1 the other being broken away, the
said longitudinally extending bars being inter
connected at their front and rearward ends by
transverse bar members denoted respectively by
the references 4 and 5, all the said members being
conveniently fabricated from appropriate lengths
of L or other suitable section bar metal.
Where L section bars are employed in the
fabrication of the frame structure each longitudi
nal and transverse member of the frame may em
body two such bars so disposed relative to each
other that the said members are of a rectangular
tube-like formation in cross section.
The front transverse bar member li may be
adapted for a longitudinally adjustable attach
ment to the front end parts of the side bar mem
bers 3, as for example by locating and fixing the
respective ends of the said transverse member il
in the upper ends of vertical slots 6a in pairs of 20
bifurcated plates 6 arranged one on each side
of the said bars 3 and constituting brackets or
arms thereon for the attachment to the vcarriage
tube.
The steering handles I3 may be constituted by
a pair of tubular rods which extend rearwardly
in divergent relationship to each other and are
so upwardly bent or inclined that their rear
ends are brought to a convenient location to be
gripped by the hands of an operator occupying a
seat I9 provided at the rearward end of the sup
porting frame or carriage of the machine.
The said steering handles I8 are preferably fur~
nished at or adjacent their rear ends with up
wardly projecting short rods Ita ñtted with a
sleeve of rubber, or other suitable'non-metallic
of parts hereinafter described, the said plates 6
having in their upper parts two holes which can
be brought into coincidence with two of the series
of holes 3a provided in the front end parts of the
material to afford convenientv grips f cr facilitating
their operation.
The swivelling plate lla is provided with a pair
of upwardly projecting pins Hb disposed sym
members 3, screw bolts 1 passed through the coin
metrically on each side of the spindle i? which
cident holes securely fixing the bracket plates in
carries the said plate, with which pins tubular
the adjusted position on the bars.
30 parts Ita on the front ends of the respective
The front end of the traversable frame struc
arms i3 have a swivelling connection, and the
ture has a secondary transverse bar member ¿a
said arms extend rearwardly and divergently
associated therewith therespective ends‘of the
from their pivotal connections with the bracket
said member 4a being fixed in the lower ends of
the slots 6a of the bracket plates.
' 35 Ila so that their rear ends at whichthe cranked
portions /depend‘ verticallyr are at a greater dis
The frame structure-or carriage may be fur
tance apart than the front ends thereof. '
nished at its front end with means for the con
The normal degree of divergence of the swiv
nection thereto of draught horse chain gear but
elling arms I3 and the length of the blades 2l)
preferably the machine is adapted for tractor
operation for which purpose and as shown in 40 which are mounted on and project horizontally,
or substantially horizontally, inwardly from the
the drawings it is provided with a forwardly ex
lower ends of the vertically depending parts of
tending draw bar` 8 disposed in the middle longi
the arms are such that the inner ends of the
tudinai plane of the carriage the said bar having
blades lie in overlapping relationship and co
means at its front end, such as the pair of per
act as is well understood to provide a continuous
forated plates lìa whereby it is adapted for a ver
tical pivotal connection with an appropriate part
cutting edge while the mechanism is traversed
between one .plant andthe next in the row in
on the tractor or a suitable hitch associated there
with. The rearward end of the said bar 8 is rigid
ly attached to the transverse member 4a of the
frame structure and the bar is braced to the said
member da and to the transverse member 4 by
rods such as 9.
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The rearward end of the frame structure or
carriage is supported on travelling wheels lil
which may be mounted on a continuous axle, or
the working of the machine. '
The blade-likeV members >or shares proper ‘Pil
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maybe
fixed to the depending cranked portions
'
50 of the arms I3 by the provision Yon the respective
blades of a vertical> cylindricalprojection 2te of
a diameter proper to ñt into‘ the tubular lower
ends of said arms and to provide for an adjust
able setting of the said shares the lower portion
of the depending parts may be slit vertically at
one side thereof and the lowerends be furnished
as shown in the drawings, on stub axles i Ijcar-`
ried by the inclined bar members l2, l2a fixed
to and depending from the underside of the longi
tudinal bars 3 of the carriage.
with a collar Mib-having a slit therein coincident
with the slit in the tube, the lparts of the collar
,
Each arm I3 of the pair comprised in the
hoeing mechanism, or in each such mechanism
where more than one is provided on the carriage',
is constituted by a crank-like member, the said
crank-like members which may be formed from
60
said boltserving very securely to clamp the
blades in any position to which they may be ad
justed on the ends of the arms i3.
The arms I3 are preserved in vtheir normal
a single piece of appropriately bent :metallic
tubing, or, as shown in the drawings, from Ytwo
connected pieces of tubing, being disposed in ver
tical planes and extending longitudinally rear
wardly from their connection as hereinafter de.
scribed with a plate or bracket l5 having a swivel
mounting on a horizontal spindle Iñmounted in
70
bearings provided by lugs i6 carried by the lower
,
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The said swivelling plate or bracket lllis fur-A
degree of divergence relative to each other as
seen in full lines in Figure land are adapted
to be moved'or swung from suchcondition'for
the purpose of carrying their blades or shares 2B
out of overlapping relationship as indicated in
dotted lines on the right-hand mechanism in
_Figure 1 so as to form a gap between the blades
front transverse bar ¿la aforesaid of the carriage
or frame.
adjoining the slit having outwardly projecting
lugs through coincident holes in which a screw
bolt is passed, the tightening up of a nut on the
is
which _permits them to pass ,the >stems of ‘the
plants in the forward traversing Vof ‘the machine.
by the provision inasso'ciation with each arm
2,413,429
5
I3 of a bar or link 22 which has a pivotal attach
ment to or abutment against a pin or stud I3c»
on the arm, the links associated with the respec
tive arms 'projecting inwardly in oppositely in
clined directions and their inner ends having a
pivotal connection with lugs or projections 23
disposed at diametrically opposite points on a
plate or disc 23a which is furnished, on a diame
ter at right angles to that on which the lugs 23
are disposed, with laterally extending arms 23b
which are respectively in operative connection
through rods 23C with pedal actuating mechanism
mounted on the steering handles as hereinafter
6
have with the disc 23a linked to the respective
arms I3, co-operates with the motion which is
given to the arms through their connectionvwith
the plate I'Im which turns angularly with the
steering handles to effect the corresponding
Steerage action of the arms and the blades or
shares carried thereby.
One of the steering handles I8 is, or may be,
furnished with a stop such as 3i to co-act with
a'projection on the adjoining arm, conveniently
the pin or stud I3c thereon, to limit the outward
swinging motion of the arms I3 when the ma
chine is in operation.
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The weight of the arms I3 and the other parts
The said armed plate or disc 23a is adapted to 15 associated therewith for their operation and the
steerage of the machine may be borne by a
turn on a central vertical axis or pivot 24 mountn
spring suspension of the parts from the main
ed in-a bearing carried by a cross bar 24a iixed
frame or carriage, >a suitable spring suspension
in suitable location between the handles or rods
embodying a pair of coil springs 32 the lower ends
I8, and a coil spring 25 which interconnects the
arms I3 at points between their front ends and 20 of which are attached to convenient anchorages
on the aforesaid cross bar 24a carried by the
the points thereonV with which the links 22 ccn~
steering arms or handles I8, the upper ends of
necting said arms with the disc or`plate have
said springs being attached to an interconnecting
pivotal connection, co-operates with the said disc
member 32'a fixed to the lower end oi a chain
and links in maintaining the arms in their normal
25 33 the upper part of which is looped around a
condition.
rod 34 extending transversely above the frame
The pedal actuated mechanism provided for
or carriage, its respective ends being mounted on
eiiïecting the turning motions of the armed plate
pillars or standards 35 provided on the longitudi
or disc 23aL in one or other direction for moving
nal side members of the frame or carriage.
the arms I3 from the normal condition to the
The chain connection of the springs 32 with the
relative positions for forming the gapA between 30
rod 34 affords a ready means of adjusting the
the blades embodies two plate~like members 26,
height of the suspendedrparts relative to the
one for supporting and taking the pressure of
ground level in order to compensate for the vary
each foot of the operator, the said plate-like
ing degrees of downward pressure which may be
members having ,upwardly bent parts 26a and 28b
at their rear ends and outer side edges respec 35 exerted on the handles and pedals by operators
of diiîerent physiques.
tively for locating the foot thereon and prevent
In lieu of this spring suspension of the arms
ing its slipping from the pedal.
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I3 and associated parts, the vertical limb of each
Each plate-like member 26 has a swivel mount»
arm VI3 may, as is illustrated in Figure 3, have a
ing on a laterally projecting pin 2ï provided at
or adjacent the lower end of a bar 23 and the 40 travelling wheel?! mounted thereon, the mount»
ing of this wheel being effected by providing the
upper ends of the saidbars 2t 'have a swivel
vertical limb of the arm with ar tubular part ¿3b
mounting on a horizontal rod 29 extending be«
in which the vertical part of a cranked rcd 2i*
tween the steering rods and carried in bearing
carrying the wheel rits and turns so that the
brackets 30 appropriately located on the respec
45 wheel can swivel caster-wise.
tive handles I8.
described.
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Each swivelling pedal plate 26 is connected
Where a" plurality of hoeing mechanisms is
through the medium of the rods or wires 23C
aforesaid with the outer end of the respective
side arms 23b of the rotatable plate 23a with which
the arms YI3 have the link connections aforesaid,
mounted on the frame or carriage a separate
seat Iâ may be provided for each operator or the
seat may be made continuous from side to side
of the carriage or frame and the said seat or
seats may be supported on the frame by metal»
the rear end of each wire 2t!c having a swivel
connection with a lug 2$dron the respective pedal
lic bars or strips Iiia the rearward ends of which
and its front end a similar connection with the
~ are upwardly cranked and'connected to the rear
armsv23b on the rotatable plate 23e, and it will
be appreciated that by exerting pressure of the
end cross member 5 of the frame, the front ends
foot on one pedal, the left hand pedal when the
parts are arranged as shown in the drawings, and
relaxing the pressure of the 'right foot on the
right hand pedal thedisc 23a will be turned in a
direction which acts to` move the arms I3 to the
relative positions- for affording a gap between
the blades or shares 2B, while pressure by the
cranked and having a bearing or lodgment on a
i right foot and the relaxation of pressure bythe
left foot will turn the disc in the reverse direction
thus bringing the arms back to their normal con
dition, the spring 25 which has been expanded
by the outward turning of the arms assisting in
Y the return of the parts to the normal condition.
of the said bars or strips being downwardly
rod 3S which extends transversely across the
v’trame its respectiveends resting on the down
wardly inclined bars or rods I2a aforesaid and
being located and ñxed between brackets such
as 3l provided on the said bars or rods I2a.
It will be appreciated that considerable vari
ation in details of construction of the parts de
scribed may be made without departing from the
nature
of
the
invention.
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>
An implement or machine in accordance with
this invention may readily be yadapted for the
performance of hoeing operations close upto the
respective sides of a row, or rows, of plants
Any steering of the mechanism which may be
requisite due to the successive plants in the row 70 wherein the plants are set so closely that hoeing
between the successive plants by the machine is
not being in strict alignment is effected by swir1g~V
' impracticable, such adaptation being effected by
ing the steering handles I8'in one or other lateral
the provision for use in association with the
direction on their front end pivot I‘I according to Y
vthe direction and extent of the Steerage necessary » pairs of blade or share carrying arms of means
and the connection which the said handles I8 75 whereby they can be temporarily fixed at such
2,413,429
8
degree of divergence relative to each other that
pivoted on said fra-‘me to swing laterally thereof
a gap of any predetermined size is maintained
between their inner or presentedA ends, Qon
swinging said arms thereby.
and carrying said pedal actuated meansV for
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5. A machine. for inter-plant hoeing, compris
venient means for the said purposemay be oo_n
stituted by a rod or bar of appropriate length
and the ends of which are adapted-for engage
ment with pins or studs suitably located on the
ing a traversable frame, a pair of arms pivotally
connected thereto for swinging movements later
ally of the> frame, blades mounted on the respec
respective blade-carrying arms, so that the rod
or bar extends transversely between the arms
to maintain them at the requisite de_gree’oi
tive arms to swing therewith into overlapping
cutting relation and into separated relation to
form a gap between them, pedal actuated means
divergence.
I claim:
for swinging the arms laterally in relatively op
1. A machine for inter-plant hoeing, compris
ing a traversable frame, a pair of arms connected
thereto to move laterally thereof and carrying
blades movable by the lateral movements of said
the other of said relations, and manually oper
posite directions to bring the blades into one or~
arms into overlapping cutting relation and into
separated relation, and pedal actuated means
connecting said arms for simultaneous lateral
movements thereof in relatively opposite direc-~ »,
ated means for swinging both of said arms to
ward one or the other side of the frame for steer
ing the blades embodying a pair of handles
pivoted on the frame to swing laterally thereof
and connected to said arms, and a rod extending
between and connecting the handles, said pedal
actuated means comprising a bar suspended from
tions to bring the blades into said cutting` and
separated relations.
2. A machine for inter-plant hoeing, compris
on said bar.
ing a travez-sable frame, a pair of arms con
nected thereto to move laterally vthereof and .y
a. traversable trame, a pair of arms pivotally
connected thereto for swinging movements later
carrying blades movable by the lateral move
ments of said arms into overlapping cutting re
aily of the frame, blades mounted on the respec
lation and into separated relation, and pedal ac
tuated means comprising a pair of pedals, and
means connecting said arms and pedals for ~
rod, and a pair of pedals pivotally mounted
n machine for inter-plant boeing, compris
tive arms to @wing therewith into overlapping
cutting relation and into separated relation to
form a gap between them, pedal actuated Vmeans
.for swinging the arms laterallyin relatively op
simultaneous lateral movements of the arms to
posite directions to bring the blades into one or
bring the blades into overlapping cutting relation
the other or" said relations, and manually oper
ated means for swinging both of said arms to
by operation of one of the pedals, and for-simule
taneous lateral movements of the arms to bring
ward one or the other side of the frame for steer
the blades into separated relation by operation
ing the blades, said arms and manually operated
of the other pedal.
steering means being connected to the frame for
relative raising and lowering movements, and a
spring suspension mounted on said frame and
yieldingly supporting
arms and steering
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3. A machine for inter-plant hoeing, compris
ing a travel-sable frame, a pair of arms connected
thereto to move laterally thereof and carrying
blades movable by the lateral movements of
said arms into overlapping cutting relation and
i?. A machine for inter-plant hoe/ing, compris
into separated relation, and pedal actuated means
ing a traversable frame having _a seat thereon for
comprising a pair of pedals, a rotatably mounted
the operator, a pair of arms pivotally connected
member having links connected to its diametri
to the frame to swing laterally .thereof andcar
cally opposite sides and to the respective arms, .45 rying blades movable by the lateral swinging
and links connected to other diametrically op
movements oi the arms into-overiapping cutting
posite sides of said member and to the respective
reía-tion and into separated relation to form a gap
pedals for rotating said member by operation of
between them, a pair of handles pivotally .con
one
the pedals to bring the blades into cut
necL _d to the frame to swing in unison> laterally
ting relation and for rotating said member in an
and extending to a position adjacent to
opposite direction by operation of the other pedal
the operatorie seat, a pair of ¿pedals pivotall ’ sup
to bring the blades into separated relation.
ported by the handles adjacent to the operator’s
4. A machine for inter-plant hoeing, compris
seat, mechanism carried-by the handles andoper
ing a traversable frame, a pair of arms pivotally
Vatively connecting said arms for simultaneous
connected thereto for swinging movements lat
lateral swinging movements lthereof in relatively
erally of the frame, blades mounted on the re
opposite directions to swing the blades into rcut
spective arms to swing therewith into overlap
ting or separated relation, means connecting one
means.
ping cutting relation and into separated relation
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of the pedals _to said mechanismto operate the
to form a gap between them, pedal actuated
latter Yto swing the blades to cutting ‘relation
means Íor swinging the arms laterally in rela 60 when said pedal is operated, and means connect
tively opposite directions to bring the blades into
>one or the other of said relations, and manually
`operated means for swinging ~`both of said arms
toward one or the other side of the frame for
steering the blades, embodying a pair of handles
ing rthe other pedal to said mechanism to oper
ate the latter to swing-the blades to separated re
lation when said other pedal is operated.
DOUGLAS RAYMOND BOMFORD.
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