Improvements in Lawn Mowers.
Year: 1893

page_text: Date of Application, 15th May, 1893-Accepted, 8th July, 1893
COMPLETE TUIFICATION.
Improvements in Lawn Mowers.
I, AUGUSTUS RICHARD WOODYATT, of 155 Paisley Street, in the City of
Guelph, in the County of Wellington, in the Province of Ontario and Dominion of
Canada, Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
The object of my invention is a lawn mower having an easy motion together with
a larger and even cut and being more durable and kept more easily in order.
These objects I attain by using large driving wheels with inside gear projecting
clear of the spokes and allowing it to be completely cased in and protected
against dirt and by using a separate detachable cover or cap for the pinion:
Further, by attaching the arms to which the pole or handle is secured and which
forms part of the same to the framing at a point a little below the level of the
center of the driving wheels, so that the pressure on the handle will hold the
mower down instead of having a tendency of tilting it up. Also by constructing
a grass guard which draws in the grass sideways under the ends of the knives
and thus effects a wider cut.
Fig. 1 is a transverse section of my improved mower, showing the driving wheel
and gear, handle attachment and grass guard in elevation.
Fig. 2 is a section on line x x Fig. 1.
Fig. 3 is a perspective view of the driving wheel and gear, showing the grass
guard.
Fig. 4 is a detail showing the attachment of the handle or pole and the pinion
cover.
Fig. 5 is a detail showing the attachment of the handle or pole arms and
Fig. 6 is a transverse section of the wheel rim, gearing and gear casing.
A is the axle supporting near each end the framing B with the stationary gear
casing 6 and being supported by the large driving wheels C, mounted rotatively
at the ends. An internal spur rim c is formed integrally with the spokes of
the drivers, projecting clear therefrom and being of nearly the same diameter
and completely covered in by the two sides forming the casing b meeting the
edges of the two sides formed at the back and side of the spur rim, c, so as to
form horizontal joints, as shown in Figs. 2 3 and 6. The cylinder axle D is
journaled in one of the spokes forming part of the frame B, so that the
pinion D', connected to said axle in the usual way, so as to gear only in one
direction, gears with the internal wheel rim within a suitable casing 6 provided
on said spoke and closed at the end by a removable cover or cap B¹.
The hub 6 of the frame B has a slotted extension B between the two spokes,
of which the lower one carries the pinion casing and journal, provided with a
pintle level with or a little below the level of the center of the axle. Said
pintle is engaged by an eye in the arm E on which the latter swivels after being
inserted through the slot and attached to the handle or pole E¹, the slot being
long enough to allow the handle to be raised and left self-supporting in an
upright position, as shown in Fig. 1 in dotted lines and generally in Figs. 14
and 5. The position of the pintle is such that when the machine is in operation
and the handle raised, the line of thrust intersects the line connecting the two
points of support namely, the axle A and the roller F placed at the rear and
supported in the usual manner, at a more or less acute angle and the point of
intersection falls below the axle A. In this way the thrust on the handle never
tends to lift the back roller off the ground, while the machine is constantly
adjusting itself to any inequalities in the surface over which it passes.
LD037

page_text: The grass guard G is cast integrally with the gear casing band framing B,
Figs. 12 and 3, consisting of a band or strip sloping gradually inward towards the
center of the machine and downward and from the casing to the frame extension
which carries the knife and back roller.
The knife bar I', having the steel knife I secured to it, is attached in the usual
manner to the extension of the frame B which has a bracket provided for the
purpose. The cylinder consists of four blades d, secured to three spiders d', the
central one of which is loose upon the shaft D.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a lawn-mower, the combination with a large driving wheel of an internal
spur rim projecting inwardly clear of the spokes and forming two sides of a casing,
a casing euclosing the other two sides of the rim and making horizontal joints
therewith and forming part of a stationary frame, and an axle upon which said
frame is secured, substantially as set forth.
2. In a lawn-mower, the combination with a large driving wheel of an internal
spur rim projecting inwardly clear of the spokes and forming two sides of a casing,
a frame part of which forms the other two sides of the spur rim casing, and forming
horizontal joints therewith and having a recess for the pinion gearing in said spur
rim with removable end or cap and a bearing for the shaft carrying said pinion, and
an axle on which said frame is mounted stationarily, substantially as set forth.
3. In a lawn-mower, the combination of the driving wheels mounted on a shaft
and supporting a frame at each end, a pair of frames supported stationarily on a
shaft, a slotted extension of the hub of each frame between two spokes provided
with a pintle and a pair of arms E cach having one end provided with eye pass into
said slot and engage said pintles, said pintle placed at or below the level of the
center of the shaft supporting said frame, substantially as set forth.
4. In a lawn-mower, the combination of a frame mounted stationarily on a shaft
supported by wheels and consisting of a hub, spokes, rim forming a casing and
extensions forming supports of other parts, of a grass guard G consisting of a strip
formed integrally with said rim at one end and with the extension at the other and
sloping gradually outwards as far as the end of the knives from the casing towards
the extension of the frame, substantially as set forth.
Dated this 21st day of Auril A D 1802
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