Improvements in Fluid Pressure Brakes for Velocipedes and like Machines.
Year: 1896

page_text: Date of Application, 17th July, 1896
Complete Specification Left, 17th Apr., 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements in Fluid Pressure Brakes for Velocipedes and like
Machines.
I, JOHN GEORGE AULSEBROOK KITCHEN of 28 Rose Grove, Ardwick, Manchester,
in the County of Lancaster, Mechanician, do hereby declare the nature of this invention
to be as follows:-
This invention relates to fluid pressure wheel brakes of velocipedes and similar
machines, in which the pressure is obtained by the hand and consists in further
improvements in the construction of brakes according to that described in the
Specification of my Letters Patent No. 16581 A.D. 1893.
In accordance with this invention I make the flexible hollow brake block or cushion
in the form of an oblong cup with rounded ends and in the centre part of the
concavity I form a raised bearing part or rubbing surface or shoe of the brake, a
groove thus being produced all round the bearing part or shoe. The two surfaces of
the shell of the hollow brake block lie normally as close together inside as possible
so as to contain little fluid when closed. The inflating tube is preferably fixed near
to one end of the hollow brake block. The external concave wall of the block has
preferably a lining or insertion of canvas to prevent stretching of the material of the
block which is as usual formed of elastic indiarubber.
A ring or split ring of metal corresponding to the edge of the hollow block is
attached to the block by canvas along the edge thus rendering the edge rigid and
facilitating its secure attachment to the carrier. The attachment of the rigid edge to
the carrier may be made in any suitable way but is preferably effected as hereinafter
described.
The carrier of the block or cushion consists of a rigid cup shaped shell preferably
of metal and is provided with a tube near to one end through which the inflating
tubo of the hollow block passes.
A groove is preferably formed round the inside edge of the rigid shell. Into this
groove the split ring of the hollow block is forced by which the two parts are held
together.
The carrier or rigid shell may be attached to the framework of the machine in any
suitable manner.
Improvements in Fluid Pressure Brakes for Velocipedes and like
Machines.
I, JOHN GEORGE AULSEBROOK KITOHEN of 44 Albert Road, Alexandra Park, late
of 28 Rose Grove, Ardwick, Manchester, in the County of Lancaster, Mechanician,
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 fluid pressure wheel brakes of velocipedes and similar

page_text: machines, in which the pressure-is obtained by the hand and consists in further
improvements in the construction of brakes made according to that described in the
Specification of my Letters Patent No. 16581 A.D. 1893, with the object of increasing
the efficiency thereof.
The improvements have reference to the attachment of the hollow flexible brake
block to the carrier. The drawings attached hereunto illustrate the carrying out of
my invention.
Figure 1 represents a plan of the shoe.
Figure 2 a sectional elevation and 3 an underside view of the carrier and flexible
brake block.
In accordance with this invention I make the flexible hollow brake block or
cushion a in the form of an oblong cup or dish preferably with rounded or curved
ends and in the centre part of the concavity I form a raised bearing part or rubbing
surface or shoe a¹ of the brake, a groove d² thus being produced preferably all round
the bearing part or shoe. The double walls or surfaces of the shell of the hollow
brake block lie normally as close together inside as possible so as to leave as little
space as possible and contain littlo fluid when closed. The inflating tube a³ is
preferably fixed near to one end of the hollow brake block. The external concave
wall of the block has preferably a lining or insertion of canvas a to prevent
stretching of the material of the block which is as usual formed of elastic
indiarubber.
To the hollow brake block a is attached by canvas a ring of metal of suitable
size, which has preferably a split or open joint 6, by which ring the block a is
attached to the carrier c. The right edge of the block so formed may be attached to
the carrier in any, suitable known way but preferably in the manner hereinafter
described.
The carrier c of the block a consists of a shell of metal having any suitable form
of clip or other attachment at c¹ by which the carrier is attached to the machine. It
is provided with a tube or with an opening 2 through which the inflating tube a³
passes. A groove c is formed round the inside edge of the metal shell c. The
ring aforesaid being of suitable size, is after attachment-to the block, spring into
the groove by which the two parts a and c are held together.
As previously stated the block a may be attached by means of the wire ring b to
the metal shell or carrier c in any suitable and obvious way.
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
First. The herein described method of attaching the flexible brake block to the
carrier which consists in first securing a wire ring to the brake block and then
securing the brake block by means of the wire ring to the carrier substantially as
described and illustrated hereinbefore and for the purpose set forth.
Second. The herein described method of attaching the flexible brake. block to the
carrier which consists in first securing by canvas and cement a split wire ring to the
brake block, forming the carrier with a groove along its internal edge, and then
springing the wired edge of the brake block into the groove substantially as described
and illustrated hereinbefore and by the drawings attached.
Third. The combination with a hollow flexible brake block of a split wire ring
surrounding the edge of the same, substantially as and for the purpose hereinbefore
described and illustrated by the drawings.
1007
R. J. URQUHART,
57, Barton Arcade, Manchester, and 6, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.