Improvements in Brakes for Velocipedes.
Year: 1896

page_text: Date of Application, 23rd Nov., 1896-Accepted, 2nd Jan., 1897
COMPLETE SPECIFICATION.
Improvements in Brakes for Velocipedes.
1, THOMAS NEWCOMB of Addlestone Iron Works, Addlestone, in the County
of Surrey, 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 brake for velocipedes, and it consists
essentially of a disc or drum mounted on or attached to the wheel to be braked
and having a cone-shaped periphery, of a compound roller forming by and between
them a V-shaped circumferential recess adapted to engage with the periphery of
the brake disc or drum, of a friction brake adapted to act on the periphery of the
compound roller, and of means for bringing the said roller into frictional contact
with the brake disc or drum.
In the accompanying drawing which illustrates this invention:-
Figure 1 is a view in side elevation showing-by way of illustration-its
application to the driving wheel of a bicycle, and
Figure 2 is a view in end elevation thereof-partly in section.
Throughout the views similar parts are marked with like letters of reference.
The brake disc or drum A is mounted on the hub X of the driving wheel in any
other convenient manner. The rim or periphery a of this brake disc or drum is
made of a cone shape as shown. On the frame Z in close proximity to the disc or
drum A is formed or fixed a bracket to which is pivotted at ba box C which is
preferably formed in two parts as shown for convenience in assembling the parts.
In the ends of the box C are formed bearings c adapting it to carry an axle D on
which are mounted the two parts E and E of the compound roller, the said parts
forming by and between them a V-shaped groove which is adapted to engage with
the coned rim or periphery a of the brake disc or drum, the parts E and E¹ of
the said rollers being forced towards each other by means of a suitable spring
such as F.
The one part E of the compound roller is conveniently made in one with the
axle D, and the other part E is mounted to slide on the axle D but to have no
independent rotative movement with respect thereto by means of a square or
D shaped enlargement on the said axle. The part E¹ is preferably made hollow
as shown to receive the spring F which acts between the part E' of the roller and
a collar d threaded on the axle.
The box C is rocked on its pivot to bring the compound roller into contact
with the brake disc or drum, by means of a lever such as G pivotted in close
proximity to the box C and preferably at 6 to the bracket B, and it is restored to
its normal position by means of any suitably arranged spring such as H. The
operating end of the lever G presses either directly or indirectly on the box C
and the other end is connected with any suitable mechanisin for enabling it to be
operated by the rider.
U
The lever G is preferably arranged to act directly on the compound roller E E
by means of a friction brake or pad such as J fitting in a slot in the box C and
bearing on the periphery of one or other or on both of the parts E and E¹ of the
compound roller, thus obtaining an increased braking effect.

page_text: 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.) The herein before described combination of parts forming my improved
brake for velocipedes.
(2.) A brake consisting essentially of a disc or drum such as A formed on or
attached to one of the wheels of the velocipede, of a compound friction roller the
two parts E and E¹ of which form by and between them a V-shaped groove with
which the disc or drum A engages, of a spring such as F adapted to keep the two
parts E and E' of the said compound roller together, of a box such as C adapted
to carry the axle D of the compound roller E, E and pivotted either directly or
indirectly to the frame of the machine, and of a lever such as G pivotted at or
about the same point as the box C and adapted to act on the said box either
directly or indirectly, as set forth.
(3.) A brake consisting essentially of a disc or drum such as A formed on or
attached to one of the wheels of the velocipede, of a compound friction roller the
two parts E and E' of which form by and between them a V-shaped groove with
which the disc or drum A engages, of a spring such as F adapted to keep the two
parts E and E' of the said compound roller together, of a box such as C adapted
to carry the axle D of the compound roller E, E', and pivotted either directly or
indirectly to the frame of the machine, of a lever such as G pivotted at or about
the same point as the box C and adapted to act on the said box either directly or
indirectly, and of a spring such as H'adapted to raise the box C when the pressure
of the operating lever G is released to take off the brake, as set forth.
(4.) A brake consisting essentially of a disc or drum such as A formed on or
attached to one of the wheels of the velocipede, of a compound friction roller the
two parts E and E' of which form by and between them a V-shaped groove with
which the disc or drum A engages, of a spring such as F adapted to keep the two
parts E, E of the said compound roller together, of a box such as C adapted to
carry the axle D of the said compound roller and pivotted either directly or
indirectly to the frame of the machine, of a lever such as G pivotted at or about
the same point as the box C and adapted to act on the said box either directly or
indirectly, of a spring such as H adapted to raise the box C after it has been
depressed by the lever G and of a friction device such as J acting on the compound
roller E, E, through the pressure of the operating lever G, as and for the purpose
set forth.
Dated this 23rd day of November 1896.
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.