Патент USA US2045497

June 23, 1936.
2,045,497
H. J. STEGE'MAN
LAWN MOWER
Filed April 21, 1954
R.
4Sheets-Sheet 1
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INVENTOR
815%’
ATTORNE s.
June 23, 1936,
2,045,497
H. J. STEGEMAN
LAWN ' MOWER -
4 Sheets-Sheet 2
Filed April 21, 1934
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BY
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_
ATTORNEYS
June 7 23, 1936. -
2,045,497
H. J. STEGEMAN
.
LAWN MOWER,
Filed April 21, 1934
32
‘
-
ENVENTOR
WM?‘
BY %
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ATToRNEZf;
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June 23, 1936. ~
HJ, S'TEGEMA‘N'
'
2,045,497
LAWN MOWER
‘Filed April 21, 1934
'4 Sheets-Sheet 4
fyvmgolq
‘BY
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ATTORNE :.
Patented June‘23,|1936"
'
\
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2,045,497
.
UNITED ‘STATES PATENT‘ OFFICE
LAWN MOWER
Henry J. Stegeman, Fair?eld, Conn., assignor to .
The Locke Steel Chain Company, Bridgeport,
Conm, a corporation of Connecticut
Application April 21, 1934, Serial No. 721,759
‘
- 32 Claims.
This invention relates to certain .changes made
in the structure disclosed and claimed in my copending application Ser. No. 634,485, which has
since matured into Patent No. 1,994,929, granted
(Ci. 56-7)
cured to a block 8 which is keyed to the shaft.
Rotatably mounted upon the‘pins ‘I is a ring 9, ,
and rotatably mountedv in this ring are shafts in
extending in opposite directions from the center
'_5 March 19, 1935, those changes being what 1 now'
deem to be improvements upon the structure of
that application. ‘The-novelty will be best understood from the following description and the
annexed drawings, in which I have shown se-
of the shaft 3 but in alignment with each other. 5
These shafts III are disposed at right angles to
the pins 1 and, with those pins, complete the
universal connection between the shaft 3 and
the roller 6. As will be seen, these shafts ill have
10 lected embodiments of the various features and
bearings in the hub ll of the roller. ‘
in which:
15
10
The roller has three sections disposed side by
Fig. 1 is a view partly in elevation and partly
in section, and showing a portion of a lawn
side longitudinally of the shaft 3, and the uni- '
versal connection'between that shaft and the
mower;
'
'
Fig. 2 is a section on the line 2-2 of Fig. 1;
roller is preferably disposed at the central sec
tion. .
' .
Fig. 3 is a fragmentary plan viewvof a portion
of the structure appearing in Fig. 1, with certain
structure added thereto;
The hub I I has on opposite sides thereof plates
I2 ‘connected together by bolts l3 which serve to
unite them to the hub. Secured to the shafts I0
. Fig. 4 is an elevation of the structure appear-
20 ing in Fig. 3 as viewed from the bottom of that
?gure;
,
Fig. 5 is a view, partly in section and partly
in elevation, taken from the right of Fig. 4;
Fig. 6 is a fragmentary view of the same struc25 ture appearing in Fig. 5, but showing the parts
in different positions;
'
Fig. 7 is a fragmentary view of a cutter unit
showing one of the novel features; _
Fig. 8- is a section on the line 8—8 of Fig. '7.
30 I Referring ?rst to Figs. 1 to 6, inclusive, the
novel features are shown as applied to a machine
of the general type disclosed in my aforesaid Patent No. 1,994,929, although, of' course, they may
be applied to other machines where found suit35 able. The machinecomprises a frame I including
a housing 2 in which is disposed a gear arrangemcnt for driving various parts of the machine
from a suitable motor. Further details of the
. machine are not necessary to an understanding
40 of this invention, and therefore have been omitted from the drawings. The gearing may include
a suitable differential to operate two shafts 3 dis-posed in alignment with‘ each other and upon
each of which is mounted a ground-engaging roll45 er. Since a similar construction is used in mounting each roller upon its shaft, only one such roll-
15
are beveled pinions l4 meshing with teeth on
annular ring gears l5 and I6 disposed on opposite 20
sides of the longitudinal center of the central
section of the roller. The section nearest the cen
ter of the machine, and which for convenience
will be referred to as 6’, has a. plate I‘! cooperat
ing with the ring l6 and fastened thereto by bolts 25
I8 to clamp therebetween a tread portion IQ of
the same diameter as the thread 20 on the cen-'
tral section. The outermost section 6" is like
wise formed of a tread 2| secured in place by
bolts 22 passing through openings in the ring 30
l5 and the plate 23. The tread 20 of the cen
tral section is supported on a head 24 integral
with the hub H and disposed outwardly of the
beveled gears l4 and carrying the shafts ID. The
ring gears I5 and I 6 move between‘the edges of, 35
the plates l2 and the head 24 as the gears ro
tate on the hub.
.
The principal result of this’ arrangement is
that, when turning the machine, the speeds of
the three sections can vary and thus avoid slip- 40
page, because of the differential connection be
tween them. The above arrangement will be seen
to be quite ?exible. Moreover, as the roller pro~
ceeds over the ground, it can readily tip both in
a vertical and horizontal plane. That is to say, it . as 5
can accommodate itself to varying contours of
or is shown herein, it being understood that a, the ground. Moreover, as it thus accommodates
similar roller is used on the other side of the itself to the contour Ofthe ground, the various
50
machine.‘
'
The shaft 3 has a bearing 4 in the frame, and
sections will accommodate themselves to each
other so as to avoid, or at least to greatly reduce, 50
disposed outwardly from the bearing 4 the shaft
any slippage of the roller itself on the ground.
has a universal connection 5 to the roller indi-
The relative motion between the various sections
cated generally at 6.
This connection may be
is made possible by the beveled gear arrangement,
of any suitable and usual form, here shown as
which includes the pinions l4 and the teeth on
55 comprising two oppositely disposed pins 1 se-
the ring gears I5 and I6.
‘
,
55
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2
2,045,497
Preferably, movement in a horizontal plane
is ‘limited by a pilot block 25 moving in a guide
way 26 in part of the frame, as the roller con
forms to the contour of the ground.
The block 25 may be secured to the hub of the
central section as by an extension 21.
The machine comprises one or more cutter
units which maybe operated from the motor and
which may be raised or lowered in a. manner more
10 fully described in my-aforesaid copending ap
plication. For example, in Fig. 4, there is indi
cated a cable 28 running over an idler 29 and
which may lift one of the cutter units 30, of
which several are indicated.
15
I
When the. machine is notv in operation, and
when it is desired to transport it to another lo
cation, it is desirable to lift the cutter units and
the ground-engaging rollers out of contact with
the ground, as set forth in my aforesaid copend
20 ing application. One of the novel features of
' this vapplication involves an arrangement for
supporting the machine upon wheels permanent
ly mounted upon the machine and which can be
used for such transportation. Normally, .two
25 such wheels will be used, one on either side of
the machine, but for the sake of simplicity, only‘
one such wheel has been shown and will be de
scribed in detail.
The wheel is designated generally 3| and may
30 be of the ‘pneumatic tire type illustrated and
comprising a hub 32 keyed to the ‘shaft 33 which
is rotatably supported in a suitable bearing 34
on a sub-frame 35.
.
again as a mower, the sleeve 31 is retracted to
theposition. shown in dotted lines in Fig. 5, this
being conveniently done by means of a handle
44 secured to the pull rod 40, and then the sub
frame ‘may be swung to the position shown in
dotted lines in Fig. 4 and in full lines in Fig. 2.
‘Then the handle may be released and the sleeve
31 may engage the top edge 45 of the frame I,
thus holding the sub-frame in raised position.
The sleeve .31 may, during movement of the sub
frame on its pivot, ride along the outer face of
the frame I until its top edge 45 is reached.
During this movement also the sub-frame is
guided by means of a projection 46 on the sub
frame adjacent the pivot 36 moving within a 15
guide member 41 on the main frame I.
When the wheel 3| is in position to support
the machine, an additional support between the
wheel and the main frame is formed by means
of an anchor 48 slidably mounted in a tubular 20
member 49 forming part'of the main frame I.
This anchor may be received within a bore 50
in the sub-frame 35, this bore being caused to
register with the tubular member 49 by means
of a stop 5| on the main frame engaging a stop 25
52 on the sub-frame. The anchor may be re
tracted by means of a handle 53 against the ac
tion of a spring 54 to the position shown in Fig.
6, where it may be held by the handle being en
gaged in the offset portion of a bayonet slot 55, 30
as indicated in Fig. 6. ' After the sub-frame is
brought to the position shown in full lines in
‘ Figs. 4 and 5, the handle may be released from
This sub-frame 35 is pivoted to the frame I at
35 36 and may be held in either one of two posi
tions, in one of which the shaft 33 is clutched
to the driving mechanism of a roller 6, with the
rollers out of engagement with the ground, and
in the other of which the roller is in engage
40 ment- with the ground and the wheel is held in
inoperative position where it may be carried on
the frame of the machine.
‘
Referring to Fig. 5, it will be- seen that the
shaft 33 is provided with a sliding clutch ele
45 ment 31, here shown in the form of a sleeve
mounted to slide on the shaft, and spring actu
the offset portion of the bayonet slot, and then
the spring will cause the anchor to enter the
bore 50. A suitable handle 56 is provided for
manipulating the sub-frame and the parts car
ried thereby.
Turning now to Figs. 7 and 8, I have shown
therein a cutter 30 formed of two side frames 40
51 supporting the shaft 58 of a rotary cutting
element, this element comprising the usual blades
59 adapted to cooperate with a stationary blade
60 in a well-known manner. This blade 60 is
supported adjacent the ground, and the cutter 45
is supported at least in part on the ground by
ated by a compression spring 38 towards the means of a shoe 6|. In order to secure the shoe
right of this ?gure. The spring 38 is mounted . and stationary blade to the cutter side frames
within a bore in the shaft 33 and reacts between
50 the bottom of that bore and a head39 on a pull
rod 40. This head has a pin 4| extending through
opposed slots in the Wall of the bore and se
in an efficient manner, I connect the side frames
by an anchor member, here shown as a tube 62
disposed in end brackets 63 secured to the side ,
frames as by screws 63’. The tube is preferably
cured to the sleeve 31.
’
welded to the end brackets 63, as indicated at
The sleeve 31 may have any suitable internal v64, to make an integral structure. Extending
55 shape corresponding to that of a clutch element
forwardly from the anchor member is a plu 55
42 on a stub shaft 43 secured to the hub of the
rality of ‘ intermediate brackets 65 preferably
central section of the roller 6 so that rotation. welded to the anchor member, and preferably
of this central section, by the driving mechanism integral with a clamping member 66, which is ‘
of the machine, may cause rotation of the wheel. likewise integral with the end brackets 63. The
60
By the arrangement just described, it will be
seen that the roller 6 may be lifted out'of en
gagement with the ground by any suitable means
(not shown). The sub-frame 35 then may be
swung to the position shown in full lines in Figs.
65 4 and 5, in which the stub shaft 43 and the shaft
33 will be in alignment and the clutch elements
may be caused to engage to form a driving con
nection therebetween. When the connection’ is
thus made, it will be seen that the adjacent
70 ground-engaging roller will be kept out of con
tact with the ground and will serve as an inter
mediate driving connection from the machine
to the wheel, so that the wheel is positively driven
to transport the machine.
75
.
_
When it is desired to operate the machine
stationary blade 60 is secured between the clamp
ing member 66 and the shoe 6| as by screws 61.
The above-described arrangement is one which
takes up the stresses with a minimum of ma
terial. The principal 'force exerted on the cut
ting edge of the stationary blade is a vertically 65
downward one, and adjacent that edge there is
little space available for a member to resist that
force. By placing the ‘anchor member rear
wardly of the cutting edge and hanging the
blade therefrom by forwardly extending integral 70
brackets, it is possible to adequately support the
blade and at the same time permit its close ap
proach to the ground.
While I have shown the invention as embodied
in speci?c forms, it is to be understood that va 75
3
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9,045,407
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.
‘rious changes in details may be made'without " fixed bearing thereon, a shaft rotatably mounted
departing from the scope of theinventidn, and _ in said bearing, a ground-engaging roller extend
ing parallel with said shaft, a hub mounted on
I therefore do not intend to limit myself except
by the , appended claims.
I claim:
tudinal sections, means securing the central one
‘
1. A lawn mower comprising a frame having a
fixed bearing thereon, a shaft rotatably mounted
in said bearing, a ground-engaging roller ex
10
tending generally lengthwise of said shaft, and
a'pivot extending transversely of the shaft and
supporting said roller on said shaft, thereby per
V15
said shaft, said roller comprising three longi
‘of said sections to said 'hub, toothed pinions
mounted on said hub concentrically with said
shaft, rings secured respectively to ‘the other
sections and having teeth meshing with the teeth
on said pinions, and means rotatably supporting
said other sections on saidhub with said teeth.
,
_
mitting tipping of the roller parallel to said shaft, in engagement.
8. A lawn mower comprising a frame having a
said roller being formed in a‘ plurality oflongi
tudinal sections rotatable about said shaft rela-" ?xed bearing thereon, a shaft rotatably mounted
in said' bearing, a ground-engaging roller extend
tively to each other.
2. A lawn mower comprising a frame having - ing parallel with said shaft, a hub mounted on
said shaft, said roller comprising three longitu
a fixed bearing thereon, a shaft rotatably mount
ed in said bearing, a ground-engaging roller ex
tending generally lengthwise of said shaft, a pivot
20 extending transversely of the; shaft and sup
porting said roller on said shaft, thereby per
mitting tipping of the roller parallel to said shaft,
dinal sections, means securing the central one of
said sections to said hub, means rotatably sup
porting the other sections on said hub, and means 20
preventing axial movement of one ‘section with
respect to the other.
said roller being formed in a plurality of longi- ‘ ' 9. A lawn mower comprising a frame having a
tudinal sections rotatable about said shaft rela
25 tively to each other, and means maintaining said
sections in axial alignment during said relative
rotation thereof.
I
3. A lawn mower comprising a frame having a
fixed bearing thereon, a shaft rotatably mounted
30 in said bearing, a ground-engaging roller extend
ing generally lengthwise of said shaft, ‘a pivot
extending transversely of the shaft and supporting
said roller on said shaft, thereby permitting tip
ping of the roller parallel to said shaft, said
i-olleribeing formed in a plurality of longitudinal
sections rotatable about said shaft relatively to
each other, and gears on said sections in constant
mesh during said relative rotation.
?xed bearing thereon, a shaft rotatably mounted
in said bearing, aground-engaging roller extend
ing parallel with said shaft, a hub mounted on
said shaft with a universal connection, said roller
comprising three longitudinal sections, means se
curing the central one of said sections to said
hub, means rotatably supporting the other‘ sec- '
tions .on said hub, and means preventing axial
movement of one section with respect to the other.
10. A lawn mower comprising a frame having a
fixed bearing thereon, a shaft rotatably mounted
in said bearing, a ground-engaging roller extend
ing parallel with said shaft and comprising two
longitudinal sections, a hub secured to said shaft "
with a universal connection, one of said sections
4. A lawn mower comprising a frame having a , being secured to said hub to rotate therewith,
?xed bearing thereon, a shaft rotatably mounted : means rotatably supporting the other section on 40
the hub, and means preventing axial movement
in said bearing, a ground-engaging rolle'r extend
ing generally lengthwise of said shaft, a pivot
extending transversely of the shaft and supporting
said roller on said shaft, thereby permitting tip
45 ping of the roller parallel to said shaft, said
roller being formed in a plurality of longitudinal
. sections rotatable about said shaft relatively to
of one section with respect to the other.v
11. A lawn mower comprising a frame having a
fixed bearing thereon, a shaft rotatably mounted a
in said bearing, a ground-engaging roller extend
ing parallel with said shaft and comprising two
longitudinal sections, a hub secured to said shaft,
each other, and means maintaining the axial one of said sections being secured to said hub to
spacing of said sections constant during said ' rotate therewith, means, rotatably supporting the
other section on the hub, and means preventing
50 relative rotation.
5. A lawn mower comprising a frame having a axial movement of one section‘ with respect to the
'
?xed bearing thereonha shaft rotatably mounted other.
12. A lawn mower comprising a frame sup
in said bearing, a ground-engaging roller extend
ing parallel with said shaft and formed in a ported by a ground-engaging roller, a wheel of
' plurality of longitudinal sections rotatable about
said shaft relatively to each other,.a hub secured
to said shaft with a universal connection, one of
said sections being secured to said hub, and a_
differential connecting the other sections to said
hub section while permitting said relative rota
tion.
.
'
6. A lawn mower comprising a frame having a
fixed bearing thereon, a shaft rotatably mounted
in said bearing‘, a ground-engaging roller extend
ing parallel with said shaft, a hub mounted on
said shaft with a universal connection, said roller
comprising three longitudinal sections, means se
curing the central one of said sections to said
hub, toothed pinions mounted on said hub con
centrically with said shaft, rings secured respec
tively to the other sections and having teeth
meshing with the teeth on said pinions, and means
rotatably supporting said other/sections on said
hub with said teeth in engagement.
'7. A lawn mower comprising a frame having a
substantially larger diameter than the roller, a
sub-frame on which said wheel is rotatably
mounted, means forming a pivotal connection be
tween said frame and sub-frame, means prevent~
ing movement of the sub-frame axially of said
pivot, a detachable driving connection between 5
said wheel and said roller and‘ operative when
said Wheel and roller‘are arranged concentrically
to each other, means to swing said sub-frame on
said pivot to bring said wheel and roller into
axial alignment with each other or to swing them
out of alignment, and means to lock said sub<
frame in either one of said positions.
13. A lawn mower comprising a frame having
a supporting roller therefor, a wheel of substan
tially vlarger diameter than the roller, a ‘sub- '
frame on which said wheel is rotatably mounted,
a pivot connecting said sub-frame to said frame
and so disposed that upon swinging of the sub
frame about the pivot the axes of the roller and
the wheel may be brought into alignment, means
_
2,045,497
preventing movement of the sub-frame axially of , cooperating clutch element slidably keyed to said
said pivot, a clutch adapted to connect said roller
to said wheel to drive one fromthe other, a stop
adapted to stop rotation of the sub-frame on said
pivot when said axes are in alignment, and means
to lock said sub-frame to said frame when in that
position.
.
,
a
14. A lawn mower comprising a frame having a
supporting ‘roller therefor, a wheel of substan
10 tially larger diameter than the roller, a sub-frame
on which said wheel is rotatably mounted, a pivot
connecting said sub-frame to said frame, and so
disposed that upon vswinging of the sub-frame
about the pivot the axes of the roller and the
'15 wheel may be brought into alignment, means pre
venting movement of the sub-frame axially of
said pivot, a clutch adapted to connect said roller
to said wheel to drive one from the other, a stop
adapted to stop rotation of the ‘sub-frame on said
20 pivot when said axes are in alignment, and
means to lock said sub-frame to said frame when
in that position, said locking means comprising a
spring-pressed anchor slidably mounted on said
frame and adapted to be actuated by said spring
into a bore in said sub-frame.
15. A lawn mower comprising a frame having
a supporting roller therefor, a wheel of substan
tially larger diameter than the roller, a sub
frame on which said wheel is rotatably mounted,
a pivot connecting said sub-frame to said frame
wheel axially thereof and adapted to cooperate
with said ?rst-named clutch element to opera
tlvely connect the roller and the wheel to rotate
one from the other, a spring normally urging said
second-named clutch element towards said frame,
and means to retract said second-named clutch
element against the action of said spring.
18. A lawn mower comprising a frame having a
vertically extending side, a ground-engaging
roller supporting said frame and disposed in
l-Il
wardly of said side, a shaft on said roller and pro
jecting through an opening in said side of the
frame, a sub-frame disposed outwardly of said
side, a wheel of substantially larger diameter
5
than said roller and having a bearing‘in said sub
i'rame, a pivotal connection between said frame
and sub-frame so arranged that the axes of said
roller and wheel may be brought into alignment
with each other by movement of the sub-frame
on said pivot, a clutch element on said shaft, a
cooperating clutch element slidably keyed to said
wheel axially thereof and adapted to cooperate
with said ?rst-named clutch element to opera
tively connect the roller and the wheel to rotate
one from the other, a spring normally urging said
second-named clutch element towards said
frame, means to retract said second-named clutch
element against the action of said spring, and
means on the frame adapted to engage said
and so disposed that upon swinging of the sub- , clutch element to hold said sub-frame in raised
frame about the pivot the axes of the roller and
the wheel may be brought into alignment, means
preventing movement of the sub-frame axially
of said pivot, a clutch adapted to connect said
roller to said-wheel to drive one from the other,
a stop adapted to stop rotation of the sub-frame
on said pivot when said axes are in alignment,
means to lock said sub-frame to said frame when
40 in that position, ‘said locking means comprising a
springepressed anchor slidabl'y mounted on said
frame and adapted to be actuated by said spring
into a bore in said sub-frame, and means to hold
said anchor in retracted inoperative position.
position with said clutch elements out of engage
ment.
19. A lawn mower cutter comprising side
frames, a rotatable cutting element journaled in "
said side frames, a ground-engaging shoe extend
ing between said side frames adjacent the bot
tom thereof, a stationary blade disposed above
said shoe and having an edge adapted to cooper
ate with the rotatable cutting element, said edge 40
being disposed forwardly of said shoe, an anchor
member ‘extending between said side frames ad
jacent the rear of said shoe, a plurality of brack
ets secured to said anchor member and extend
16. A lawn mower comprising a frame having a
ing forwardly therefrom towards said cutting
vertically extending side, a ground-engaging ' edge of the stationary element, and means se
roller supporting said frame and disposed in
curing said shoe and stationary cutting element
wardly of said side, a shaft on said roller and pro
to said brackets.
jecting through an, opening in said side of the
50 frame, a sub-frame disposed outwardly of said
side
frames, a rotatable cutting element journaled in
50
'side, a wheel of substantially larger diameter
than said roller and having a bearing in said sub
frame, a pivotal connection between said frame
said side frames, a ground-engaging shoe ex
and sub-frame so arranged that the axes of said
said shoe and having an edge adapted to cooper
ate with the rotatable cutting element, said edge .
being disposed forwardly of said shoe, a tubular
anchor member extending between said side
frames adjacent the rear of said shoe, a, plurality
of brackets secured to said anchor member and
roller and wheel may be brought into alignment
with-each other by movement of the sub-frame
on said pivot, a clutch element on said shaft, and
a cooperating clutch element slidably'keyed to_
said wheel axially thereof and adapted to coop
60
erate with said ?rst~named clutch element to
operatively connect the roller and the wheel to
rotate one from the other.
'
17. A lawn mower comprising a frame having
a vertically extending side, a ground-engaging
roller supporting said frame and disposed in
wardly ‘of said side, a shaft on said roller and
projecting through an opening in said side of the‘
frame, a sub-frame disposed outwardly of said
side, 'a wheel of substantially larger diameter
70 than said roller and having a bearing in said sub
frame, a pivotal connection‘ between said frame
'and sub-frame so arranged'that the axes of said
roller and wheel may be brought into alignment
75
. 20. A lawn mower ‘cutter comprising
45
with each other by movement of the sub-frame
on said pivot, a clutch element on said shaft, a.
tending between said side frames adjacent the
bottom thereof, a stationary blade disposed above
extending forwardly therefrom towards said cut
ting edge of the stationary element, and means
securing said shoe and stationary cutting element
to said brackets.
‘ 21. A
lawn
mower
'
cutter comprising
side
frames, a rotatable cutting element'journaled in
said side frames, an anchor member extending
between said side frames adjacent the bottom of
the cutter, brackets spaced along the length of
said anchor member and secured thereto and ex
tending forwardly therefrom, a stationary blade
having an edge disposed in front of said brack
ets and in position to cooperate with said rotat
able cutting element, and means securing said
blade to said brackets.
‘
22. A lawn mower cutter comprising side 75
5
2,045,497
27. A lawn mower cutter comprising side
frames, a rotatable cutting element journaled in
in said side frames, an anchor member extend-° said side frames, a ground-engaging shoe extend
ing between said side frames adjacent the bot
ing between said side frames adjacent the bottom of the cutter, brackets spaced along the tom thereof, a stationary blade disposed above 5
said shoe and having an edge adapted to coCl length of said anchor member and secured there
to and extending forwardly therefrom, a clamp
operate with the rotatable cutting element, said
ing member carried by said brackets,ia ground
edge being disposed forwardly of said shoe, a
engaging shoe disposed beneath said clamping tubular anchor member extending between said
member and parallel thereto, a stationary blade side frames adjacent the rear of said shoe and 10
adapted to. cooperate with said rotatable cutting welded in'sockets in said side-frames, a plurality
element and disposed between said clamping ele
of brackets extending forwardly from said anchor
ment and shoe, and means securing said shoe, member and welded thereto, and means securing
blade, and clamping element together.
,
said shoe and stationary cutting element to said
frames, a rotatable cutting element journaled
23. A lawn mower cutter comprising side
'frames, a rotatable-cutting element journaled in
said side frames, at ground-engaging shoe extend
ing between said side frames adjacent the bottom
thereof, a stationary blade disposed above said
shoe and having an edge adapted to cooperate
20 with the rotatable cutting element, said edge be
ing disposed forwardly of said shoe, an anchor
member extending between said‘side frames ad
jacent the rear of said shoe, a plurality of brack
ets welded to said anchor member and extend
ing forwardly therefrom
towards said cutting \
edge of the stationary element, and means se
curing said shoe and stationary cutting element
to said brackets.
'
brackets.
-
28. A lawn mower cutter comprising side
frames, a rotatable cutting element journaled in
said side frames, a ground-engaging shoe extend
ing between said side frames adjacent the bottom
thereof, a stationary blade disposed above said 20 ‘
shoe and having an edge adapted to cooperate
with the rotatable cutting element, said edge be
ing disposed forwardly of said shoe, a tubular
anchor member extending between said side
frames adjacent the rear of said shoe and welded 25 i
in sockets in said side frames, a. plurality of
brackets extending forwardly from said anchor
member and welded thereto, and means securing
said shoe and stationary cutting element to said
24. A lawn mower cutter comprising side brackets, said means including a clamping mem 30
frames, a rotatable cutting element journaled in ber integral with said brackets and between which
said side frames, a ground-engaging shoe ex » and the shoe the stationary blade is disposed.
tending between said side frames adjacent the
29., A lawn mower comprising a frame having a
bottom thereof, a stationary blade disposed above ?xed bearing thereon with a shaft rotatably
‘ said shoe and having an edge adapted to oo
mounted in said bearing, a ground-engaging roller 35
operate with the rotatable cutting element, said
extending generally parallel with said shaft and
edge being disposed forwardly of said shoe, an
anchor member extending between said side
frames adjacent the rear of said shoe and welded
in sockets in said side frames, a plurality of
.40 brackets extending forwardly from said anchor
comprising three longitudinal sections, a hub, a
- member
and welded thereto, and means securing \
said shoe and stationary cuttingelement to said
positive driving connection between said shaft
and the central one of said sections, and differen
tial drives between said central section and the 40
other two sections.
,
'
-
30. A lawn mower comprising a frame having a
?xed bearing thereon with a shaft rotatably
mounted in said bearing, ‘a. ground-engaging
25. A lawn mower cutter comprising side roller extending generally parallel with said shaft
and comprising three longitudinal sections, a hub,
45 frames, a rotatable cutting element journaled in
a positive driving connection between said shaft
said side frames, a ground-engaging shoe ex
tending between said side frames adjacent the ,and the central one of said sections, differential
bottom thereof, a stationary blade disposed above drives between said central section and the other
two sections, a. wheel of substantially larger diam 50
- said shoe and having an edge adapted to cooper
ate with the rotatable cutting element, said edge eter than said roller, and means for securing said
_ brackets.
being disposed forwardly of said shoe, an anchor
member extending between said side frames ad
jacent the rear of said shoe and welded in sock
ets in said side frames, a plurality of brackets
extending forwardly from said anchor member
and welded, thereto, and means securing said shoe
and stationary cutting element to said brackets,
said means including a clamping member inte
gral with said brackets and between which and
60 the shoe the stationary blade vis disposed.
' 26. A
lawn
mower , cutter
comprising
side
wheel to said shaft adjacent said central section.
31. A lawn mower comprising a frame having a
?xed bearing thereon, a shaft rotatably mounted
in said bearing, a ground contact wheel surround
ing the end of said shaft, a. universal connection
between said wheel .and the end of said shaft,
whereby said wheel supports the shaft and frame
and may be used to propel the mower and where
by said universal connection permits the wheel to 60
tip out of parallel with the shaft, a pilot adjacent
the outer end of said wheel and movable in a
vertical guideway in said frame to limit said tip
- frames, a rotatable cutting element journaled in
ping of the wheel.
_
' said side frames, an anchor member extending
32. A lawn mower comprising a frame having a
between said side frames adjacent the bottom of -
fixed bearing thereon with a'. shaft rotatably
mounted in said bearing, a ground-engaging
said anchor member and secured thereto and ex
tending forwardly therefrom. a stationary blade roller extending generally parallel with said shaft
having an edge disposed in front of said brackets ‘and. comprising three longitudinal sections, a hub,
and in position to cooperate with said rotatable ‘a positive universal driving connection between 70
cutting element, means securing said blade to said said shaft and the central one of said sections,
brackets, said ‘means including a clamping mem
and differential. drives between said central sec
ber integral with said brackets, a shoe beneath tion and the other two sections.
I
said clamping member. and means holding the
65 the cutter, brackets spaced along the length of
shoe and clamping member together with the
11s
stationary blade therebetween.
HENRY J. S'I'EGEMAN.
76