U.S. patent number RE33,238 [Application Number 07/036,169] was granted by the patent office on 1990-06-26 for oscillating powered cultivating tool.
This patent grant is currently assigned to Hawaiian Motor Co.. Invention is credited to Lee A. Moulton, Frederick Siegler.
United States Patent |
RE33,238 |
Moulton , et al. |
June 26, 1990 |
**Please see images for:
( Certificate of Correction ) ** |
Oscillating powered cultivating tool
Abstract
Disclosed herein is a powered cultivating tool or the like which
includes a prime mover disposed within a housing, an output shaft
extending from .[.said.]. .Iadd.the .Iaddend.housing having a
pinion fixed thereto, .[.said.]. .Iadd.such .Iaddend.pinion being
placed in meshing engagement with a gear having a first roller
thereon offset from the axis of rotation of the gear which engages
a cam follower operatively connected to a cultivating implement
such as a tine so that the implement displays an oscillatory
pendulum-like motion about a vertical radial line extending from an
axis rotation of the gear. It is contemplated that the gear has
extending therefrom an axle whose opposed extremity from the gear
is provided with a disc hub having a similar roller, cam follower
and the like for accommodating either a terminal portion of the
first cultivating implement, or a second cultivating implement so
that the sychronization of the two cam followers can be
beneficially altered as is required by gardening constraints and
the like.
Inventors: |
Moulton; Lee A. (Carmichael,
CA), Siegler; Frederick (Los Angeles, CA) |
Assignee: |
Hawaiian Motor Co. (Long Beach,
CA)
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Family
ID: |
27398027 |
Appl.
No.: |
07/036,169 |
Filed: |
April 3, 1987 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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848836 |
Apr 2, 1986 |
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607104 |
May 3, 1984 |
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Reissue of: |
229925 |
Jan 30, 1981 |
04351396 |
Sep 28, 1982 |
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Current U.S.
Class: |
172/40;
172/41 |
Current CPC
Class: |
A01B
1/065 (20130101); A01B 39/10 (20130101) |
Current International
Class: |
A01B
1/00 (20060101); A01B 1/06 (20060101); A01B
39/10 (20060101); A01B 39/00 (20060101); A01B
001/00 () |
Field of
Search: |
;172/40,41,42,43,54.5,84,97,376,377 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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35065 |
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May 1973 |
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AU |
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7413152 |
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Apr 1975 |
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NL |
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607063 |
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Aug 1948 |
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GB |
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653985 |
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May 1951 |
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GB |
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800090 |
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Aug 1958 |
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GB |
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828722 |
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Feb 1960 |
|
GB |
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Other References
The Green Machine.RTM., "Panther Expand-It System 2810" Sales
Brochure, Hawaiian Motor Co., Jun. 1988. .
Popular Science, "Electric Cultivator for Gardens", p. 24, Mar.
1983..
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Primary Examiner: Reese; Randolph A.
Assistant Examiner: Thompson; Jeffrey L.
Attorney, Agent or Firm: Nilsson; Robbins, Dalgarn,
Berliner, Carson & Wurst
Parent Case Text
.Iadd.This is a continuation of co-pending application Ser. No.
06/848,836, filed on Apr. 2, 1986, which is a continuation of
application Ser. No. 06/607,104, filed May 3, 1984, both now
abandoned. .Iaddend.
Claims
What is claimed is:
1. A powered cultivating tool or the like comprising, in
combination:
a housing having a top portion including a handle supported
thereon, said housing defining an enclosure within a topmost
portion of which a prime mover is disposed,
ventilation means for said prime mover,
an output shaft extending from said prime mover without said
housing,
a pinion fixed to said output shaft and an axle having opposite
extremities with a gear carried on one of said extremities, said
gear being adapted to mesh with said pinion, said axle supported on
bearings within said housing and being vertically below and
parallel to said prime mover's output shaft and having both said
extremities extending without said housing,
a roller on said gear, axially offset from said axle defining a
first cam,
a spindle means vertically below and parallel to said axle disposed
in said housing supported on bearings and having terminal portions
extending outwardly from said housing,
a first cam follower fixed on said spindle means having an upwardly
open U-shaped bifurcated portion straddling said roller,
and a cultivating tine fixed to said cam follower and said spindle
for pendulum like oscillation in response to movement .Iadd.of
.Iaddend.said roller through said prime mover.
2. The device of claim 1 wherein said axle's other extremity is
connected to a hubbed disc provided with a second roller thereon
which is offset from a center line of said axle thereby providing a
second eccentric cam, and a second cam follower straddling said
second roller.
3. The device of claim 2 wherein said first and second cam
followers move about a common axis and includes said spindle means
affixed to a respective one of said cam followers at opposed
extremities of said spindle means, said spindle means constrained
from axial displacement.
4. A device of claim 3 wherein said spindle means are constrained
from axial translation by grooves on said spindle means and lock
rings in said grooves adapted to abut against bushings.
5. The device of claim 4 wherein said tine has a first and a second
upper portion, each said portion connected to said spindle means,
said first and second rollers aligned to travel together, said
spindle means formed as one piece.
6. The device of claim 4 including a second tine fastened to said
second follower, said first and second rollers are aligned
180.degree. out of phase, said spindle means formed as two
pieces.
7. The device of claim 5 or 6 wherein said housing is formed from
spaced walls interconnected by a threaded bolt, a bottom shroud
communicating with said spaced walls and protecting the interior of
said housing and a removable top plate connected to said side
walls, said top plate supporting said handle and providing access
to the interior of said housing .Iadd.
8. A powered cultivating tool or the like comprising, in
combination:
a casing having a ground end and an opposed end, said ground end
being adapted to be the end nearer to the ground to be worked by
the tool and said opposed end being adapted to be the end more
distant from the ground to be worked by the tool, said casing
defining an enclosure within which a prime mover is disposed,
ventilation means for said prime mover,
an output shaft extending from said prime mover without said
casing,
a pinion fixed to said output shaft and an axle having opposite
extremities with a gear carried on one of said extremities, said
gear being adapted to mesh with said pinion, said axle being
supported on bearings within said casing, being parallel to said
prime mover's output shaft, being disposed toward said ground end
of said casing from said output shaft and having both said
extremities extending without said casing,
a roller on said gear, axially offset from said axle, defining a
first cam,
a spindle means supported within said casing, said spindle means
being parallel to said axle, being disposed toward said ground end
of said casing from said axle and having terminal portions
extending without said casing,
a cam follower on said spindle means having a bifurcated portion
straddling said roller, and
a cultivating tine fixed to said cam follower for pendulum like
oscillation in response to movement of said roller through said
prime mover. .Iaddend. .Iadd.
9. The device of claim 8 wherein said spindle means is mounted to
be rotatable. .Iaddend. .Iadd.10. The device of claim 8 wherein
said spindle means includes first and second spindle members.
.Iaddend. .Iadd.11. A powered cultivating tool or the like
comprising, in combination:
a casing having a ground end and an opposed end, said ground end
being adapted to be the end nearer to the ground to be worked by
the tool and said opposed end being adapted to be the end more
distant from the ground to be worked by the tool, said casing
defining an enclosure within which a prime mover is disposed,
an output shaft extending from said prime mover,
an axle with a gear carried on said axle operatively connected to
said output shaft to rotate said axle, said axle being supported on
bearings within said casing, being parallel to said prime mover's
output shaft and being disposed toward said ground end of said
casing from said output shaft,
a roller mounted to move with said rotation of said axle, axially
offset from said axle, defining a cam,
a spindle means supported within said casing, said spindle means
being parallel to said axle and being disposed toward said ground
end of said casing from said axle,
a cam follower on said spindle means having a bifurcated portion
straddling said roller, said bifurcated portion having an elongated
opening for said movement of said roller along said cam follower,
and
a cultivating tine fixed to said cam follower for pendulum like
oscillation in response to said movement of said roller through
said prime mover.
.Iaddend. .Iadd.12. The device of claim 11 wherein said spindle
means is mounted to be rotatable. .Iaddend. .Iadd.13. The device of
claim 11 wherein said spindle means includes first and second
spindle members.
.Iaddend. .Iadd.14. A powered cultivating tool or the like,
comprising in combination:
a housing having a ground end and an opposed end, said ground end
being adapted to be the end nearer to the ground to be worked by
the tool and said opposed end being adapted to be the end more
distant from the ground to be worked by the tool,
a prime mover having an output shaft,
an axle,
a gear carried on said axle operatively connected to said output
shaft to rotate said axle,
a pin member mounted to move with said rotation of said axle,
axially offset from said axle, defining a cam,
a spindle means parallel to said axle and disposed toward said
ground end of said housing from said axle,
a cam follower having a bifurcated portion straddling said pin
member and being mounted to swing from said spindle means with said
movement of said pin member, and
a cultivating tine for fixing to said cam follower to swing from
said spindle means in a pendulum like oscillation with said
movement of said pin member,
said tine comprising a first elongated portion to extend from the
vicinity of said ground end of said housing toward the ground, a
second elongated portion angularly disposed with respect to said
first portion to extend inwardly and toward the ground to be worked
by the tool, and a third elongated portion angularly disposed with
respect to said second portion to extend inwardly and toward said
ground end of said housing. .Iaddend.
.Iadd.15. The device of claim 14 wherein said spindle means is
mounted to
be rotatable. .Iaddend. .Iadd.16. The device of claim 14 further
comprising:
a second pin member mounted to move with said rotation of said
axle, axially offset from said axle 180.degree. out of phase with
said first pin member, defining a second cam,
a second cam follower having a bifurcated portion straddling said
second pin member and being mounted to swing from said spindle
means with said movement of said second pin member, and
a second cultivating tine for fixing to said second cam follower to
swing from said spindle means in a pendulum like oscillation with
said movement of said second pin member 180.degree. out of phase
with said first tine.
.Iaddend. .Iadd.17. The device of claim 16 wherein said spindle
means includes first and second spindle members, said first cam
follower and said first tine to swing from said first spindle
member and said second cam follower and said second tine to swing
from said second spindle
member. .Iaddend. .Iadd.18. The device of claim 14 wherein:
said housing defines an enclosure within which said prime mover is
disposed,
said axle is supported within said housing, parallel to said prime
mover's output shaft, and disposed toward said ground end of said
housing from said output shaft, and
said spindle means is supported within said housing. .Iaddend.
.Iadd.19. A powered cultivating tool or the like, comprising in
combination:
a housing having a ground end and an opposed end, said ground end
being adapted to be the end nearer to the ground to be worked by
the tool and said opposed end being adapted to be the end more
distant from the ground to be worked by the tool,
a prime mover having an output shaft,
an axle,
a gear carried on said axle operatively connected to said output
shaft to rotate said axle,
a pin member mounted to move with said rotation of said axle,
axially offset from said axle, defining a cam,
a spindle means parallel to said axle and disposed toward said
ground end of said housing from said axle,
a cam follower having a bifurcated portion straddling said pin
member and being mounted to swing from said spindle means with said
movement of said pin member, said bifurcated portion having an
elongated opening for said movement of said pin member along said
cam follower, and
a cultivating tine for fixing to said cam follower to swing from
said spindle means in a pendulum like oscillation with said
movement of said pin member. .Iaddend. .Iadd.20. The device of
claim 19 further comprising:
a second pin member mounted to move with said rotation of said
axle, axially offset from said axle substantially out of phase with
said first pin member, defining a second cam,
a second cam follower having a bifurcated portion straddling said
second pin member and being mounted to swing from said spindle
means with said movement of said second pin member, said bifurcated
portion having an elongated opening for said movement of said
second pin member along said second cam follower, and
a second cultivating tine for fixing to said second cam follower to
swing from said spindle means in a pendulum like oscillation with
said movement of said second pin member substantially out of phase
with said first tine. .Iaddend. .Iadd.21. The device of claim 19
further comprising:
a second pin member mounted to move with said rotation of said
axle, axially offset from said axle 180.degree. out of phase with
said first pin member, defining a second cam,
a second cam follower having a bifurcated portion straddling said
second pin member and being mounted to swing from said spindle
means with said movement of said second pin member, said bifurcated
portion having an elongated opening for said movement of said
second pin member along said second cam follower, and
a second cultivating tine for fixing to said second cam follower to
swing from said spindle means in a pendulum like oscillation with
said movement of said second pin member 180.degree. out of phase
with said first tine.
.Iaddend. .Iadd.22. The device of claim 19 wherein said tine
comprises a first elongated portion to extend from the vicinity of
said ground end of said housing toward the ground and a second
elongated portion angularly disposed with respect to said first
portion to extend inwardly and toward the ground to be worked by
the tool. .Iaddend. .Iadd.23. The device of claim 22 further
comprising:
a second pin member mounted to move with said rotation of said
axle, axially offset from said axle substantially out of phase with
said first pin member, defining a second cam,
a second cam follower having a bifurcated portion straddling said
second pin member and being mounted to swing from said spindle
means with said movement of said second pin member, said bifurcated
portion having an elongated opening for said movement of said
second pin member along said second cam follower, and
a second cultivating tine for fixing to said second cam follower to
swing from said spindle means in a pendulum like oscillation with
said movement of said second pin member substantially out of phase
with said first tine,
said second tine comprising a first elongated portion to extend
from the vicinity of said ground end of said housing toward the
ground and a second elongated portion angularly disposed with
respect to said first portion to extend inwardly and toward the
ground to be worked by the tool. .Iaddend.
.Iadd.24. The device of claim 22 further comprising:
a second pin member mounted to move with said rotation of said
axle, axially offset from said axle 180.degree. out of phase with
said first pin member, defining a second cam,
a second cam follower having a bifurcated portion straddling said
second pin member and being mounted to swing from said spindle
means with said movement of said second pin member, said bifurcated
portion defining an elongated opening for said movement of said
second pin member along said second cam follower, and
a second cultivating tine for fixing to said second cam follower to
swing from said spindle means in a pendulum like oscillation with
said movement of said second pin member 180.degree. out of phase
with said first tine,
said second tine comprising a first elongated portion to extend
from the vicinity of said ground end of said housing toward the
ground and a second elongated portion angularly disposed with
respect to said first portion to extend inwardly and toward the
ground to be worked by the tool. .Iaddend. .Iadd.25. The device of
claim 19 wherein:
said housing defines an enclosure within which said prime mover is
disposed,
said axle is supported within said housing, parallel to said prime
mover's output shaft, and disposed toward said ground end of said
housing from said output shaft, and
said spindle means is supported within said housing. .Iaddend.
.Iadd.26. A powered cultivating tool or the like, comprising in
combination:
a housing having a ground end and an opposed end, said ground end
being adapted to be the end nearer to the ground to be worked by
the tool and said opposed end being adapted to be the end more
distant from the ground to be worked by the tool,
a prime mover having an output shaft,
an axle,
a gear carried on said axle operatively connected to said output
shaft to rotate said axle,
a pin member mounted to move with said rotation of said axle,
axially offset from said axle, defining a cam,
a spindle means parallel to said axle and disposed toward said
ground end of said housing from said axle,
a cam follower having a bifurcated portion straddling said pin
member and being mounted to swing from said spindle means with said
movement of said pin member, said bifurcated portion having an
elongated opening for said movement of said pin member along said
cam follower, and
a cultivating tine for fixing to said cam follower to swing from
said spindle means in a pendulum like oscillation with said
movement of said pin member, said tine being shaped to extend,
during said swinging, under said housing. .Iaddend. .Iadd.27. The
device of claim 26 wherein the tine comprises a first elongated
portion to extend from the vicinity of said ground end of said
housing toward the ground and a second elongated portion angularly
disposed with respect to said first portion to extend inwardly
toward the ground to be worked by the tool, and to extend, during
said swinging under said housing. .Iaddend. .Iadd.28. The device of
claim 27 further comprising:
a second pin member mounted to move with said rotation of said
axle, axially offset from said axle substantially out of phase with
said first pin member, defining a second cam,
a second cam follower having a bifurcated portion straddling said
second pin member and being mounted to swing from said spindle
means with said movement of said second pin member, and
a second cultivating tine for fixing to said second cam follower to
swing from said spindle means in a pendulum like oscillation with
said movement of said second pin member substantially out of phase
with said first tine, said second tine being shaped to extend,
during said swinging, under said housing,
said second tine comprising a first elongated portion to extend
from the vicinity of said ground end of said housing toward the
ground and a second elongated portion angularly disposed with
respect to said first portion to extend inwardly toward the ground
to be worked by the tool, and to extend,
during said swinging, under said housing. .Iaddend. .Iadd.29. The
device of claim 27 further comprising:
a second pin member mounted to move with said rotation of said
axle, axially offset from said axle 180.degree. out of phase with
said first pin member, defining a second cam,
a second cam follower having a bifurcated portion straddling said
second pin member and being mounted to swing from said spindle
means with said movement of said second pin member, and
a second cultivating tine for fixing to said second cam follower to
swing from said spindle means in a pendulum like oscillation with
said movement of said second pin member 180.degree. out of phase
with said first tine, said second tine being shaped to extend,
during said swinging, under said housing,
said second tine comprising a first elongated portion to extend
from the vicinity of said ground end of said housing toward the
ground and a second elongated portion angularly disposed with
respect to said first portion to extend inwardly toward the ground
to be worked by the tool, and to extend,
during said swinging, under said housing. .Iaddend. .Iadd.30. The
device of claim 26 wherein:
said housing defines an enclosure within which said primer mover is
disposed,
said axle is supported within said housing, parallel to said prime
mover's output shaft, and disposed toward said ground end of said
housing from said output shaft, and
said spindle means is supported within said housing. .Iaddend.
Description
BACKGROUND OF THE INVENTION
Since time immemorial man has been obsessed with obtaining greater
yields of produce from his agriculture endeavors. It is well known
that a tilled garden encourages move vigorous growth of the produce
due to elimination of unwanted competition as in the form of
weeds.
Accordingly, the following U.S. Pat. Nos. appear to reflect the
state of art of which applicant is aware insofar as they are
germane to the patent process: 1,827,074 Ditlevsen Oct. 13, 1931,
2,550,552 Bolongard Apr. 24, 1951, 2,779,259 Kelsey Jan. 29, 1957,
2,816,495 Brooks Dec. 17, 1957, 3,548,953 Richardson Dec. 22, 1970,
3,756,324 Bills Sept. 4, 1973, 4,003,436 Foster Jan. 18, 1977.
Of these, Bolongard teaches the use of a reciprocatory hole in
which a handle has disposed thereon a wheel supported from the
handle by means of a bifurcated frame upon which frame rests a
motor adapted to drive both the wheel and a hoe. The hoe is chain
driven indirectly through an eccentric cam so as to provide
reciprocatory motion about an axis which is coincident with the
handle.
The patent to Ditlevsen teaches the use of a pick-type power
operated hoe having an external power source and a fixed pivot
point about which the hoe operates.
The patent to Richardson teaches the use of a shrubbery and plant
digger in which a telescopic sleeve reciprocates and by applying
pressure from the handle portion, the implement presumably will go
under the ground.
Of these three patents, the first discussed patent requires the use
of a wheeled motorized support in order to make the device
effective, since as shown in the second and third discussed patents
it is not clear from the mechanical actions involved in these
patents whether or not the person holding on to the implement would
be receiving the cyclic power pulses, or whether they could be
adequately distributed and discharged into the soil. That is, if
the soil were unusually hard it would appear as though the persons
holding on to the handles of these implements would receive the
power pulses contrary to the objects of the devices.
The remaining references appear to diverge even further from the
structure and claims according to the instant application and those
similarities between any of these patents and that which is taught
in the instant application appears to be merely coincidental.
OBJECT AND SUMMARY OF THE INVENTION
Accordingly, it is an object of this invention to provide a device
which cultivates ground safely, efficiently, and with greater ease
than that which the prior art would suggest.
It is yet a further object of this invention to provide a device of
the character described above which is relatively inexpensive to
manufacture, extremely durable in construction, and readily
manueverable.
It is still a further object of this invention to provide a device
of the character described above which can be readily modified as
to its various forms or configurations of cutting implements and
the actions of the various cultivating implements modified so as to
provide a high degree of flexibility in use for plural gardening
chores.
It is yet a further object of this invention to provide a device of
the character described above which is adapted to be used on all
types of terrain, and nimble enough to work in close proximity to
plants, while still being capable of cultivating an expanse of area
beyond the ken of current machinery.
These and other objects are provided by the invention according to
the instant application which teaches the use of a housing within
which is provided a prime mover having an output shaft, linkage
means operatively connected to the output shaft which includes at
least a first eccentric cam, and a cutting implement operatively
connected to said eccentric cam so that the implement displays an
oscillatory pendulum-like motion about a vertical radial line
extending from an axis of rotation of the eccentric cam.
Moreover, these and other objects will be made manifest when
considering the following detailed specification when taken in
conjunction with the appended drawing figures.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view of the apparatus in one form according
to the present invention.
FIG. 2 is a view of the bottom portion of FIG. 1 showing a second
form of the cultivating implement.
FIG. 3 is an end view of the cultivating implement according to the
present invention.
BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to the drawings now, wherein like reference numerals
refer to like parts throughout the various drawing figures,
reference numeral 10 is directed to the powered cultivating tool
according to the present invention. The powered cultivating tool 10
includes a prime mover M which as depicted in the drawings is
suggestive of an electrical motor, wherein a power cord and plug P
extend outwardly from a housing, but it should be appreciated that
other forms of prime movers such as gasoline engines and the like
are contemplated as being within the scope of this patent.
At any rate, the prime mover M has an output shaft 11 extending
without the housing upon which is affixed as by a cotter pin a
pinion 13. The pinion 13 communicates in meshing engagment with a
gear 14 rotatably disposed on an axle 23, wherein the axle is
affixed to the gear 14 by means of pins 29. Bearings 30 suitably
support the axle/gear in a manner well known in the art.
An outer face of the gear 14 has disposed thereon a first roller 15
offset from the geometrical center of the gear so as to provide an
eccentric cam effect. Straddling the roller 15, a first cam
follower 16 is provided having an upwardly extending bifurcated
portion which straddles the first roller to transmit the cam's
motion. The lower portion of the cam follower 17 is affixed to a
spindle 19 which will be explained hereinafter, but as shown in
FIG. 1, .[.15.]. .Iadd.is .Iaddend.substantially frictionless
supported by means of the bushings 22 and 21.
Affixed to the lower portion of the cam follower 17 is a first tine
18 which curves inwardly as at 41 and then upwardly as shown
upwardly by reference numeral 40, FIG. 1.
In view of the foregoing, it should be apparent that when the motor
is energized, the implement 18 will display an oscillatory
pendulum-like motion about a vertical radial line extending from an
axis of rotation of the gear 16.
The axle 23 has an extremity remote from the gear 16 which has
affixed thereto a hubbed disc 24 similarly affixed to the axle by
means of pins 29 and supported by .[.bushings.]. .Iadd.bearings
.Iaddend.30. The hubbed disc 24 is further affixed to the axle 23
by means of screw 31, and a peripheral portion of the disc 24 has a
second roller 25 offset from the axis similar to the first roller
15, and this roller similarly drives a cam follower having a
bifurcated upper portion 26 which straddles the second roller, and
a lower portion 27 supported on a spindle 19 as through bearings
22.
As shown in FIG. 1, two spindles 19 are provided each of which
share a common bushing block 21, and the spindles are retarded from
axial translation by means of locks 20 constrained within the
grooves on the spindles proximate to their common bushing so that
the danger of tine becoming dislodged is effectively prohibited not
only by the construction of the spindle but also an outer bulbous
portion of the rollers 15 and 25 as shown in the drawings. In one
form of the invention the first and second rollers 15 and 25 are
adapted to work 180.degree. out of phase so that the motion of one
of the tines 28 opposes the motion of the other tine 18 and a
balanced opposing working force is provided contrary to the prior
art. Such an arrangement would have obvious utility in working
rather hard soil which has not been cultivated recently. In a
second form of the invention a single tine 18' has two upper
portions and is substantially in the form of a U, wherein each of
the upper portions affixes to its respective cam follower, and the
cam followers connection to the first and second rollers is such
that they are not 180.degree. out of phase but they travel together
so that the motion of the followers is not opposed but in unison.
This type of arrangement would perhaps be best suited for working
in soils that are already light and aeriated and in which a gentle
scrubbing of the topmost soil is desired. A single spindle 19 is
required, roller 25 is optional, and therfore cam follower upper
portion 26 is superfluous.
FIG. 3 shows an end view of the apparatus according to the present
invention in which it is clear that the spindle 19, axle 23, and
output shaft 11 are all symmetrically disposed and vertically
aligned so that the machine is not only self-balanced but the
majority of the weight associated with the machine is directed as a
vertical component absorbed by its reaction to the soil, and does
not have to be borne by the person operating the implement, as has
frequently occurred in the prior art.
As shown in FIGS. 1 and 3, the housing includes and supports a
handle 1 of any suitable configuration, a top plate 3 which
conceals the motor M and is affixed to the housing through bolts
that extend into elemental area 4 of the housing, and the motor M
is bolted within the housing as through 5. In this particular
instance, a cooling fan 12 is provided for the electrical
motor.
A lower portion of the housing has spaced walls 6 and 7
interconnected by means of a threaded bolt 8 which is placed just
above the spindle(s) as shown in the drawings and the spindle 19
has protection from the environment by means of a bottom shroud
9.
Having thus described the invention therefore, it should be
apparent that numerous structural modifications are contemplated as
being a part of this invention as described hereinabove and as
defined hereinbelow by the claims.
* * * * *