Improvements in Mud Guards for Rubber Tyred Wheels.
Year: 1892

page_text: Date of Application, 12th Dec., 1892
Complete Specification Left, 20th Apr., 1893-Accepted, 20th May,
1893
PROVISIONAL SPECIFICATION.
Improvements in Mud Guards for Rubber Tyred Wheels.
WALTER BOOTH GOODWIN 83 Alston Street Birmingham Artist in Decoration
do hereby declare the nature of this invention to be as follows:-
An improvement in mudguards for rubber tyred wheels, more especially as
applied to bicycle wheels. "My invention consists of iron stays fastened to the
usual binding nuts at the wheel axles, the ends of the stays being united by a
light metal frame, made adjustable upon the stays by set screws, the aforesaid
metal frame carrying a flat piece of indiarubber cut out to fit the wheel tyre and
in wet or muddy weather is adjusted so that it impinges upon the tire & scrapes off
all mud during the revolutions of wheels.
There is much less weight to carry. There is no windage. There is less friction
than when the ordinary guards are clogged with mud & the machine is always
clean.
Deted this 12th day of December 1892.
COMPLETE SPECIFICATION..
Improvements in Mud Guards for Rubber Tyred Wheels.
I, WALTER BOOTH GOODWIN, of 13 and 14, King Alfred's Place, Birmingham,
lately residing at 83, Alston Street, Birmingham, aforesaid Artist in Decoration,
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 mudguards for rubber tyred wheels and is especially
adapted for use on cycles.
The invention consists of the improved arrangement and combination of parts as
hereinafter more fully set forth and claimed.
On the accompanying drawings
Fig. 1 is a plan of a mudguard complete constructed according to my invention;
Fig. 2 shews the rubber and part of the metal frame of the same on an enlarged
scale in plan and section;
Fig. 3 represents in plan in elevation and in cross section on an enlarged scale
the attachment of the frame to the stays;
Fig. 4 represents in plan and Fig. 5 in side elevation a modification of my said
invention in which the said metal frame and stays are formed in one piece;
Fig. 6 shews the rubber of the same and a part of the frame separately;
Fig. 7 shews how the stays may be secured to the binding nuts of the
wheel axle; and
Fig. 8 shews a safety bicycle with one of my said improved mud guards applied
to each of its wheels.

page_text: The same letters of reference indicate the same or corresponding parts in all the
figures.
A1 A2 are the two stays formed of stout wire and B is the light metal frame (by
preference made of a piece of wire bent into a bow shape) which unites the ends
of the stays and carries the flat piece of india rubber C which at c' is cut out to
fit against the wheel tyre. To enable the india rubber C to be adjusted to just
touch the tyre and to suit wheels of various diameters the frame B is made
adjustable. This may be done by the connection of the ends of the frame B to
the stays A¹ A2 as shewn in Figs. 1 and 3 by an examination of which it will be
seen that fixed to each of the ends of the frame there is a piece of sheet metal
marked respectively D' D' coiled round and formed into a socket d which clips the
stay (A or A2) and on each of the stays there is a cramp e embracing the clip d
each of these cramps e carrying a set 'screw by tightening which the stay is
firmly gripped between the crampe and the clip d, thus enabling the frame B to be
fixed at any required position along the stays A' A². When the frame B is made
separate from the stays A' A2 as shewn in Figs. 1 and 3 then the stays are formed
into eyes a (see Fig. 1) to fit on to the ends of the wheel axle and they are there
secured by the usual binding nuts of the axle. When however the frame B is
made in a piece with the stays A' A² as shewn in Figs. 4, 5 and 8 then I prefer to
connect the stays to the binding nuts as shewn in Figs. 4, 5, 7 and 8. This
connection consists of two of the said cramps e and set screws fon the stays and
two angle clips D³ D' which are bent up to take on to the wheel axle under the
binding nuts G G2 (see Fig. 7) and are also formed like the pieces D¹ D2 to clip
the stays A'A' so that by tightening the set screws f the stays will be firmly cramped
to the angle pieces D³ Ď and by first slackening the set screws the combined
frame. B and stays A1 A2 can be adjusted to bring the rubber C to just touch the
wheel tyre as above described. The rubber C is by preference made of the shape
shewn on my drawings (but it is to be understood that I do not limit myself to this
particular form) cut from sheet rubber and made with side eyes c² c³ cc through
which the frame B passes; and in order to add to the elasticity of the rubber C
I make one or more holes along each side which make the rubber very free to
spring upwardly so that there is but very little friction on the tyre.
As shewn by Fig. 8 the mud guards are so fixed relatively to the wheels that
the rubber C is behind the wheel in a slanting position a little above the ground
level.
In fine weather when there is no mud the frame B is. adjusted so that the
rubber C does not touch the tyre and then when there is any mud the frame B is
as above described so adjusted that the rubber C just touches the tyre so as to
scrape off the mud during the revolutions of the wheel.
Round the recess e' in the rubber C there may be a thickened edge c' as shewn
in Fig. 2 to increase the wear of that part.
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 I
am aware of Vigurs and Peach's Specification No. 21282 A.D. 1892 and I make
no claim to anything described or claimed therein what I claim is :—
1. The construction combination and arrangement of parts forming the improved
mudguard for rubber tyred wheels hereinbefore described and illustrated by
Figs. 1, 2 and 3 of the accompanying drawings.
2. The construction combination and arrangement of parts forming the improved
mudguard for rubber tyred wheels herein before described and illustrated by
Figs. 4, 5, 6, 7 and 8 of the accompanying drawings.
Dated this 29th day of March 1893.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.