Improvements in Brakes for Rubber Tyred Vehicle Wheels.
Year: 1894

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Date of Application, 8th Oct., 1894
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Complete Specification Left,: 3rd July, 1895-Accepted, 3rd Aug., 1895
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PROVISIONAL'SPECIFICATION.
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Improvements in Brakes for Rubber Tyred Vehicle Wheels.
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I, WILLIAM EDWARD KAY, of Gowanhank, Clarkston, Busby,inear Glasgow,
Chemist, do hereby declare the nature of this invention to be as follows :—
The improvements relate to brakes for rubber tyred vehicle wheels, being more
particularly applicable to pneumatic tyres, and have for, object greater simplicity
of construction and attachment, as well as ready replacement of the wearing parts.
To accomplish this, and to effect iny improvements, I'mould or otherwise form a
brake block, entirely of india-rubber, or like flexible substance, the lower portion
of which is wholly or partly formed with a number of bristle-like projections,
similar to those of a rubber toilet brush. These bristles' may surround, or .be
surrounded by a surface of plain rubber, or the whole under surface of the brush
may be composed of bristles.
I also form the spoon of the brake with a recess in the under surface, such recess..
being laterally enclosed on all sides but one, leaving a passage for the sliding in or
out of the rubber block 'beforementioned.
Projecting from one of the sides of the recess, is a tongue or tongues of metal
or other rigid substance, which tongue takes into a cavity formed in the brake
block, and securely holds the block in position; or it may be that this tongue is
moulded or otherwise attachod 'to the block, and the cavity to receive the tongue
formed in the brake spoon.
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As the recess in the spoon is so situated that the friction of the wheel tyre tends
to force the brake block further into its enclosure, and upon the tongue, it will be.
seen that, by the means described, a brake block of simple character is provided.
which may be securely held in position, and yet readily replaced as the same wears
in use, or removed for any purpose, whenever required.
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I am aware that recessed spoons for the reception of rigid backed brushes, or of
solid rubber blocks, and brake blocks formed with rubber bristles, have been
employed for pneumatic tyres, but these are different from my present invention,...
which mainly consists of a brake block entirely of rubber, or like substance,
wholly or partly bristled, and attached within tlie spoon recess by a tongue or
tongues.
Variations in detail 'inay be made, as for instance, two or more brake, blocks and
spoons may be employed; and the forin and material of the parts may be varied,
without departing from the peculiar character of the invention.
Dated this 6th day of October 1894'
WILLIAM GADD, C.E.,
64 Barton Arcade, Manchester, Agent.

page_text: Improvements in Brakes for Rubber Tyred Vehicle Wheels.
1, WILLIAM EDWARD KAY, of Gowanbank, Clarkston, Busby, near Glasgow,
Chemist, do hereby declare the natire of this invention and in what manner the
sanic is to be performed, to be particularly described and ascertained in and by
the following statement:-
The improvements relate to brakes, of the character. hereinafter described, for
rubber tyred vehicle wheels, being more particularly applicable to pneumatic tyres,
and have for object greater simplicity of construction and attachment, as well as
ready replacement of the wearing parts.
To accomplish this, and to effect my improvements, 1 mould or otherwise form
a brake-block, entirely of india-rubber, or like flexible substance, the lower portion
of which is wholly or partly formed with a number of bristle-like projections;
similar to those of a rubber toilet brush. These bristles, or bristle-like projectious,
may surround, or be surrounded by, a surface of plain rubber, or the whole under
surface of the brush may be composed of such bristles, or bristle like projections,
thus providing a flexible yet effective braking surface which will not materially
injure the pneumatic tyre..
I also form the spoon of the brake with a recess in the under surface, such recess
being laterally enclosed on all sides but one, leaving a passage for the sliding in or
out of the rubber block beforementioned.
Projecting from one of the sides of the recess is a tongue or tongues of metal
or other like rigid substance, which tougue takes into a cavity formed in the brake
block, and securely holds the block in position; or it may be that this tongue is
moulded or otherwise attached to the block, and the cavity to receive the tonguė
formed in the brake spoon.
The recess, in lieu of being formed with one side open, may be laterally enclosed
on all sides, in which case the rubber block may be placed in position within such
recess by springing or forcing the same therein.
As the recess in the spoon is so situated that the friction of the wheel tyre tends
to force the brake block further into its enclosure, and upon the tongue, it will be
seen that, by the means described, a brake block of simplo character is provided
which may be securely held in position, and yet readily replaced, as the same wears
in use, or removed for any purpose whenever required.
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I am aware that recessed spoous for the reception of rigid backed brushes, or
of solid rubber blocks, and also that brake blocks formed with rubber bristles,
have been employed 'for pneumatic tyres,, but these are different from my present
invention, which mainly consists of a brake block entirely, of rubber, or like
substance, wholly or partly bristled, and attached within the spoon recess by a
tongue or tongues.
But, that the improvements may be better understood, I will, with the aid
of the accompanying drawings, proceed more, fully to describe means employed
by me.'
DESCRIPTION OF DRAWINGS.
Fig. 1. is a sectional elevation of one form of brake spoon, with detachable
rubber block connected thereto, in accordance with my improvements, and Fig. 2. is
a view, also in sectional elevation, taken at right angles to Fig. 1, while Fig. 3. is
a reversed plan of a spoon without the inserted rubber block or brush, and Fig. 4.
shows a modified form of brake spoon and rubber block.
The same letters-indicate corresponding parts wherever they occur.
a. is the brake rod, to which is connected the spoon b. formed with a recess 61
laterally enclosed on all sides but one, in the case of Figs. 1. 2. and 3.

page_text: c. is the tongue, projecting from one side of the spoon b, which tongue takes into
the cavity of the rubber brake block d, and so holds the same in position within
the recess b¹.
d are the rubber, bristle-like projections, moulded or otherwise formed upon one
surface of the rubber brake block d.
In Fig. 4, the recess of the spoon b. is shown laterally enclosed on all sides, the
brake block having been forced or sprung into position within such recess, through
the flexibility of the tongue, or of the rubber block, or of both.
Variations in detail may be made, such as in the shape of the recess, the position
of the tongue or tongues, and in the form and material of all the parts; likewise
two or more brake blocks and spoons may be employed, without departing from the
peculiar character of the invention.
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 brakes for cycles, the combination of a brake block-composed entirely of
rubber or other like flexible substance, and wholly or partly formed, at its bearing
surface, of a number of rubber, bristle-like projections-with a recessed brake
spoon, having a tongue or tongues projecting from one side thereof, or a cavity or
cavities formed therein for the reception of a tongue or tongues, for the purpose and
in manner substantially as herein shown and described.
2. In brakes for cycles, a recessed brake spoon--having a tongue or tongues
projecting from one side thereof, or a cavity or cavities formed tlierein to receive
a tongue or tongues-which recessed brake spoon is formed for the reception of a
brake block (whether or not such brake block is provided with bristle-like
projections thereon) for the purpose and in manner substantially as herein shown
and described.
Dated this 2nd day of July 1895.
WILLIAM GADD, C.E.,
64 Barton Arcade, Manchester, Agent.