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Патент USA US3075348

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Jan. 29, 1963
’
J, H, REID
3,075,338
POWER LAWN EDGING AND TRIMMING MACHINE
Filed Sept. 28, 1960
2 Sheets-Sheet 1
32
/3
2-“ I
l‘PE/p
INVENTOR.
/
BY
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ATTORNEYS .
Jan. 29, 1963
I
J. H. REID
3,075,333
POWER LAWN EDGING AND TRIMMING MACHINE
Filed Sept. 28, 1960
2 Sheets-Sheet 2
J/‘i /P£/0
INVENTOR
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I I 0
ATTORNEYS.
United bet-‘ates
" ice
3,il75,338
Patented Jan. 29, 1963
1
3,075,338
rowan LAWN EDGING AND TRIMMING
MAQHENE
John H. Reid, 5010 sw. 98 Ave, Miami, Fla.
Filed Sept. 28, 1960, Ser. No. 59,109
5 Claims. (e1. 56-254)
The tubular support 14 is provided with vertically
aligned slots 16-—1‘6. extending inwardly from the for
ward end thereof, these slots being arranged diametrically‘
opposite to each other, as better shown by FIGURE 2.
A pin 17 extends through the supporting rod 15, the
ends of the pin extending beyond the circumference of
the supporting rod, and thepin being- slidably received
in the slots 16-16, forming a latching mechanism. and‘
This invention relates to a lawn trimming and edging
preventing rotation of the supporting rod, when in its
machine, an important object of the invention being to
provide a machine of this character which may be 10 retracted position.
Secured on- the forward end’ of the supporting rod 15,
accurately controlled to insure a true line along the edge
there is a substantially short sleeve 18 the inner end of
of a lawn or walk.
which presents‘ a shoulder against which- one end of a
Another important object of the invention is to pro
coiled spring; 19 abuts, the opposite end of the coiled:
vide a motor operated lawn trimming and edging machine
wherein the component elements thereof are so con
15 spring abutting against the tubular support. 14, as best
structed and arranged that the cutting blades of the
show-in by FIGURE 1 of the drawings. The coiled. spring
machine may be readily reversed, thereby adapting the
19 normally urges the sleeve 18 forwardly, providing an
adjustable support for the cutting blades of the appa~
machine for right or left cutting, to meet various re
ratus,.to be now described;
quirements of use.
Formed integrally with the sleeve 18, and extending.
A further object‘ of the invention is to provide a'lawn' 20
trimming and edging machine of the wheel supported
laterally at an oblique angle with respect thereto, there
type wherein the rotary cutting blade is mounted on the
front wheel axle, to the end that it is maintained at the
desired angle with reference to a vertical plane at all
vertical plate 211, which is formed integrally with an
arm 20" and extends vertically with respect thereto. This
times, thereby obviating any possibility of the blade
digging into the lawn during the. operation of the
apparatus.
Other and further objects and advantages of this inven
tion will be hereinafter described and the novel features
thereof de?ned in the appended claims.
In the drawings:
is a supporting arm 20 to which there is attached a
plate 21 supports the vertically aligned stationary cutting
blades 22 and 23, the blades being secured to the plate
by meansof screws 24, which securely hold the cutting
blades. at oblique angles with- respect to the vertical
plane and in proper cutting relation to cooperate with a
rotary cutting blade 30' rotatably contacting same, as
will be hereinafter more fully described, for cutting and
FIGURE 1 is a fragmental plan view of a lawn trim
ming and edging machine, constructed in accordance with
the invention, certain parts thereof being‘ shown in section.
FIGURE 2 is a side elevational view of the forward
or cutting end ofthe lawn edging and trimming machine.
FIGURE 3 is a transverse elevational view taken on
trimming the edge of thelawn.
Extending forwardly from. the front surface of the
supporting arm 20, there are spaced bearing arms 25 and
26, the forward ends of which are provided with hearing
supports 27 in which. roller bearings 28 are mounted.
The roller bearings 28 provide a- support for a shaft
29 on one end of which there is mounted the rotary
line 3—3 of FIGURE 2.
FIGURE 4 is an enlarged detail elevational view taken 40 cutting blade 30, which abuts against and rotates over
the outer faces of the stationary cutting blades 22, or
on line 4—4 of FIGURE 1.
23, to cut the edge of the lawn being trimmed. Keyed
FIGURE 5 is a detail sectional view taken on line S—5
of FIGURE 1.
7
FIGURE 6 is a detail side elevational view of the
or otherwise secured to- the shaft 29 there is the driven
pulley 13, which is rotated, as previously indicated, by
stationary cutting blades of the lawn edging and trim 45 means of the belt’ 12.
Extending laterally from the bearing arm 25, there are
7
lugs 31 and 32, these lugshaving openings therein for the
‘FIGURE 7 is a detail sectional view taken on line
reception of bolts 33 and 34, respectively, the bolt 34
7-7 of FIGURE 1.
being supplied with a wing nut 36, for a purpose to. be
Referring to the drawings in detail, the reference char
ming machine.
acter 5 indicates the forward end of the wheel supported
motor base, the motor and wheel having been omitted,
since they are ‘conventional structure and a detailed dis
closure of the same is believed to be unnecessary.
hereinafter more fully described.
The reference character 37 indicates a substantially tri-.
angular supporting plate, which is pivotally mounted on
the bolt 33, at one of its ends, this supporting plate hav-,
ing therein an elongated arcuate shaped opening 35 in
Mounted on the forward end of the motor base 5,
and arranged at opposite side edges thereof, there are 55 which bolt 34 is received to provide a locking means for
securing the plate 37 in its adjusted positions. Thus it will
upstanding bearings 6 in which a horizontal shaft 7 is
be obvious that, when the wing nut 36 is loosened, the
mounted, in such a way that the ends of the shafts 7
plate 37 may be pivoted vertically to various angular
extend beyond the bearings, where they support the
positions,
along the bolt 34, to meet various requirements
pulleys 8, 9 and 10. The pulley 9 is the main power
pulley and receives power from a motor (not shown) of 60 of use. The plate 37 is formed with an opening in which
one end of a stub shaft 38 is mounted, this stub shaft 38
the apparatus through a belt 11. It will be understood
forming a support for the wheel 39. The latter is pref
that the pulleys 8, 9 and 19 are keyed or otherwise
erably rubber tired so as to grip the ground surface and
secured to the shaft 7 for rotation therewith.
increase its traction.
The pulleys 8 and 10 are the driven pulleys of the
Since the stub shaft 38 is mounted on the plate 37, it
apparatus, and, through a belt 12, transmit power to a 65 is obvious that, by adjusting the plate 37 vertically, the
driven pulley 13, to be hereinafter more fully described.
frame of the lawn trimming and edging machine may be
Welded to the lower side of the motor base, at a
adjusted vertically to vary the depth of cut of the ap
point centrally between the sides thereof and at the
paratus in trimming the edge of the lawn.
front of same, there is a tubular support 14 having one
Due to the manner of supporting the rod 15 and for
of its open ends disposed forwardly and providing a 70 ward cutting components of the machine, it is obvious that
support for a rod 15, which, as shown, extends into the
by pulling the rod 15 forwardly until the pin 17 is free of
forward open end of the tubular support.
the slots 16-46 in the tubular support 14, the entire ap
8,075,388
‘3%;
a
paratus supported by the arm 20, may be swung upwardly
and turned through approximately 180°, to reverse the
position of the rotary cutting blade 30 and the stationary
rotatable through 180° about said diameter as the sup-'
cutting blades 22 and 23 to the positions, as shown in
porting arm is rotated from one to the other of its hori
dotted lines inv FIGURE 3 of the drawings, for cutting
fight hand edging‘.
_
v
I
p
4
tien 9f the supporting arm, and a wheel rotatably mounted
on the supporting arm having its diameter aligned with
the axis of the tubular support and the supporting rod and
zontal positions.
_
_
3. In a power edging and lawn trimming machine, a;
base,- a power shaft journalled transversely of its base, a
‘It is obvious that in the use of the iriachine the wheel
39 will rest on the grass or lawn, while the rotary cutting
power pulley on the power shaft, driving pulleys ad‘
blade 30 will rest directly on the edge of the lawn being
edged or trimmed. It will of course be understood that 10 jacent the outer' ends of the power shaft, a tubular sT1p~
port mounted on the base intermediate the driving pulleys‘,
when the machine is reversed as described, the belt 12
a supporting rod rotatably received in the tubular sup
will be shifted from the pulley it? to thepulley 8, so that
port, a supporting arm on the supporting rod extending
the rotary motion of the shaft 7 will still be transmitted
outwardly from the latter and rotatable from one hori
to the pulley 13 through the belt 12 and the rotary cutting
blade 30 operated as before.
15
It will also be understood that with the reversing of the
forward cutting components" of the machine, the ends of
the pins 17 will re-enter the slots 16—-16 in the tubular
support 14, holding the supporting rod 15 against a'cc'i;
dental ‘rotation from its set position.
zontal position to another horizontal position 180° dist
placed, bearing arms on said supporting arm disposed in‘
parallel relationship‘ to‘ the axis of the tubular support
and its supporting rod, latching means comprised by cog
operating elements on the tubular‘ support and the sup-‘
20
In View of the foregoing detailed description and the
illustration on the drawings, it is believed that the opera
porting‘ rod for selectively holding the supporting arm and?
the bearing arms in either of their two horizontal posi-‘
tions, aligned bearingsvearried by said bearing arms, a;
shaft journalled in said bearings and positioned at right
tion of the machine will be obvious and that a further de
angles to the axis of the tubular" support and the support-I
scription of the details of operation is unnecessary.
21a ing fed, a rotary cutting blade on said shaft, a driven pulk
Having thus described the invention, I claim:
ley on‘ said shaft in alignment with one of the driving pul-i
1. In a power edging and lawn trimming machine, a
leys on the power shaft in the respective horizontal posi~
base, a power shaft journalled transversely of the base, a
tions of the supporting arm and bearing arms, a belt
power pulley on‘ the power shaft, driving pulleys ad
jacent the out ends of the power, shaft,- a tubular support
trained over the driven pulley and the aligned driving pul~
a supporting arm on the supporting rod extending out
ing pulley in the other horizontal position of the supporting
mounted on the base intermediate the driving pulleys, a 30 ley in one horizontal position of the supporting arm and
bearing arms and adapted to be trained over the other driv'
supporting rod rotatably received in the tubular support;
wardly from the latter and rotatable from one horizontal
arm and bearing arms, a stub shaft mounted on one of
shaft, a driven pulley on said shaft in alignment with one
4. In a power edging and lawn trimming machine, a
base, a power shaft journalled transversely of the base, a
the bearing arms in exacta'lignment with the shaft jour
position to another horizontal position 180° displaced,
latching means comprised by cooperating elements on the 35 nalled in the bearings on the‘ bearing arm, and a wheel on
the stub shaft having its diameter‘ aligned with the axis
tubular support and the supporting rod for selectively
of the tubular support and the supporting rod and ro
holding the supporting arm in either of its two horizontal
tatable through 180° about said diameter as the support—
positions, a shaft carried by said supporting arm posi
ing arm and bearing arms are rotated from one to the
tioned at right angles to the axis of the tubular support
other of their horizontal positions.
40
and the supporting rod, a rotary cutting blade on said
of its driving pulleys on the power shaft in the respective
horizontal positions of the supporting arm, a belt trained
power pulley on the power shaft, driving pulleys adjacent
porting arm, and a wheel rotatably mounted on the sup-y
porting arm having its diameter aligned with the axis of
the tubular support and the supporting rod and rotatable
from the latter and rotatable from one horizontal position
the outer ends of the power shaft, a tubular support
over the driven pulley in one horizontal position of the
on the base intermediate the driving pulleys, a
supporting arm and adapted to be trained over the other 45 mounted
supporting rod rotatably received in the tubular support, a
driving pulley in the other horizontal position of the sup
through 180° about said diameter as the supporting arm 50
is rotated from one to the other of its horizontal positions.
2. In a power edging and lawn trimming machine, a
base, a power shaft journalled transversely of the base, a
supporting arm on the supporting rod extending outwardly
to another horizontal position 180° displaced, latching
means comprised by cooperating elements on the tubular
support and the supporting rod for selectively holding the
supporting arm in either of its two horizontal positions, a
shaft carried by said supporting arm positioned at right
angles to the axis of the tubular support and the supporting
power pulley on the power shaft, driving pulleys ad
rod, a rotary cutting blade on said shaft, a driven pulley
jacent the outer ends of the power shaft, a tubular sup 55 on said shaft in alignment with one of the driving pulleys
port mounted on the base intermediate the power pulleys,
on the power shaft in the respective horizontal positions
a supporting rod slidable received in the tubular support,
of the supporting arm, a belt trained over the driven
a supporting arm on the supporting rod extending out
pulley and the aligned driving pulley in one horizontal
wardly from the latter and rotatable from one horizontal
position of the supporting arm and adapted to be trained
position to another horizontal position 180° displaced, 60 over the other driving pulley in the other horizontal posi
latching means comprised by cooperating elements on the
tion of the supporting arm, stationary cutting blades
tubular support and the supporting arm in engagement
mounted on the supporting arm with the rotary cutting
when the supporting rod is restricted within the tubular
blade in rotatable contact therewith and positioned at
support and disengaged when the supporting rod is extend
positive and negative acute angles with respect to
ing outwardly from the latter for selectively holding the 65 equal
the axis of the shaft mounting the rotary cutting blade
supporting arm in either of its two horizontal positions, a
and chordally with respect to the circle of rotation of the
shaft carried by said supporting arm positioned at right
latter, and a wheel rotatably mounted on the supporting
angles to the axis of the tubular support and the supporting
arm having its diameter aligned with the axis of the
rod, a rotary cutting blade on said shaft, a driven pulley
tubular support and the supporting rod and rotatable
on said shaft in alignment with one of the driving pulleys 70 through 180° about said diameter as the supporting arm
on the power shaft in the respective horizontal positions
is rotated from one to the other of its horizontal positions.
of the supporting arm, a belt trained over the driven
5. In a power edging and lawn trimming machine, a
pulley and the aligned driving pulley in one horizontal
base,
a power shaft journalled transversely of the base, a
position of the supporting arm and adapted to be trained
power
pulley on the power shaft, driving pulleys adjacent
over the other drivingpulley in the other horizontal posi 75
3,075,338
6
the outer ends of the power shaft, a tubular support
mounted on its base intermediate the driving pulleys, a
supporting rod rotatably received in the tubular support,
a supporting arm on the supporting rod extending out
wardly from the latter and rotatable from one horizontal
arms and adapted to be trained over the other driving
pulley in the other horizontal position of the supporting
arm and bearing arms, a supporting plate, pivotal means
mounting the supporting plate on one of the bearing arms
for swinging movement in a vertical plane parallel to the
position to another horizontal position 180° displaced,
axis of the tubular support and supporting rod, locking
bearing arms on said supporting arm disposed in parallel
relationship to the axis of the tubular support and the
means between the said bearing arm and the supporting
plate for securing the latter in set positions, a stub shaft
carried by said supporting plate, and a wheel on the stub
supporting rod, latching means comprised by cooperating
elements on the tubular support and the supporting rod 10 shaft having its diameter aligned with the axis of the
tubular support and the supporting rod and rotatable 180”
for selectively holding the supporting arm and the hear
about said diameter as the supporting arm and bearing
ing arms in either of their two horizontal positions,
arms are rotated from one to the other of their horizontal
aligned bearings carried by said bearing arms, a shaft
positions.
journalled on said bearings and positioned at right angles
to the axis of the tubular support and the supporting rod, 15
References Cited in the ?le of this patent
a rotary cutting blade on said shaft, a driven pulley on
said shaft in alignment with one of the driving pulleys
UNITED STATES PATENTS
on the power shaft in the respective horizontal positions
2,660,854
Chadwick _____________ __ Dec. 1, 1953
of the supporting arms and bearing arms, a belt trained
over the driven pulley and the aligned driving pulley in 20 2,855,742
2,930,176
one horizontal position of its supporting arm and bearing
2,977,740
Cooper et al ___________ __ Oct. 14, 1958
Lindell ______________ __ Mar. 29, 1960
King _________________ __ Apr. 4, 1961
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