Year: 1886

page_text: I CHARLES WARREN of 13 Fore Street, Ipswich, in the county of Suffolk,
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved friction gear for driving the cutters of
lawn mowers.
For this purpose I form one or both of the wheels or rollers of the mower with
an internal or external peripheral groove; the end or ends of the spindle of the
cutters or cylinder extends or extend through the end or ends of the frame of the
machine and is or are provided with a compound friction spring flange or collar
adapted to fit friction-wise in the said groove.
By this arrangement when the mower is driven the wheel or roller will
communicate motion to the compound spring friction collar and drive the cylinder
without noise or back lash.
G. F. REDFERN,
4, South Street, Finsbury, London
Agent for the Applicant,

page_text: Improvements in or Applicable to Lawn Mowers.
I, CHARLES WARREN, of 13 Fore Street, Ipswich, in the County of Suffolk,
Engineer, 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 :-
This invention relates to an improved friction gear for driving the cutters of
lawn mowers.
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•
For this purpose. I form one or both of the driving wheels or rollers of the mower
with an internal or external peripheral groove; the end or ends of the spindle of
the cutters or cylinder extends or extend through the end or ends of the frame of
the machine and is or are provided with a compound friction spring flange or collar
adapted to fit frictionwise in the said groove.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawings in which figures 1 and 2
represent a side elevation and plan respectively of a lawn mower constructed
according to my invention; figure 3 is a section on line A. B. of figure 1, and
figure 4 is a section on line C. D. of figure 3; figures 5 to 9 are detached views of
some of the parts. Figures 1 and 2 are drawn to a scale of about one sixth full
size, figures 4 and 5 about one third full size, and figures 5 to 9 about full size.
Similar letters in all the figures represent similar parts:
A represents the frame of the machine; B. B. the handles; C the adjustment
C
roller; D, the cutters and E the spindle thereof all of which are of ordinary con-
struction; a, a, are the driving wheels or rollers of the mower and b, b, represent
the peripheral grooves with which I form the same and which are here shewn in
the interior of the said wheels; the grooves b, are formed with inclined sides as
clearly shewn in figure 3; c, c¹, c, c², represent the compound friction spring flanges
or collars which I provide on the ends of the cutter spindle E, the said flanges or
collars fitting friction wise in the grooves 6; figures 5 and 6 are sections of the two
parts c and c¹, respectively of one of the said flanges or collars, and figure 7 is a
face view of figure 5; the flanges or collars are formed with bosses d, d, and are
provided with a spring e, which I make by preference of the form shewn in
detached face and edge views respectively at figures 8 and 9; the boss d, of the
part c, of each of the spring flanges or collars is hollow and is passed over and
keyed or pinned to the cutter spindle E, the part c', of the flange with its boss d¹,
being keyed loosely on a projection f, of the part c.
By my improvements when the mower is driven forwards the grooves b, in the
wheels or rollers a, will communicate motion to the compound spring friction
flanges or collars c, c¹, and the cutters will be thereby driven, the said friction gear
preventing any noise or back lash.

page_text: Having now particularly described and ascertained the nature of my said
invention 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 driving wheel or wheels having a
groove such as b, of a pair or pairs of flanges or collars on the cutter spindle
provided with an intermediate spring and working friction wise in the said grooves
substantially as and for the purposes hereinbefore described and represented in the
accompanying drawings.
2. The improved lawn mower herein before described and represented in the
accompanying drawings.