A New or Improved Brake specially applicable to Cycles having Pneumatic or Cushion Tires.
Year: 1891

page_text: Date of Application, 21st May, 1891
Complete Specification Left, 22nd Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
A New or Improved Brake specially applicable to Cycles having
Pneumatic or Cushion Tires.
I, ANDREW LOWREY of 9 Pearson Street South Shields in the County of
Durham, Barman do hereby declare the nature of this invention to be as
follows:-
My invention relates to a new or improved brake specially applicable to cycles
of every description having pneumatic or cushion tires.
As ordinary brakes applied to pneumatic or cushion tires on cycles are quite
unsuitable for the purpose by reason of the rapid wearing out of the tire under the
brake friction I have devised a remedy whereby I apply the brake power to an
auxiliary brake wheel. By my invention I mount the brake wheel on a radial lever
or levers centered on a projection formed on or in connection with the front fork
or vertical. Within the brake wheel and designed to work against its inner circum-
ference arrange the brake plate or plates which may be mounted on the epis
of rods leading thence in the case of velocipedes to the cycle handle bars in the
ordinary way.
A simple crank device connecting a point or points on the rods
with a center of motion such as the axle of the brake wheel enables the brake
plates to be easily thrown in or out of gear with the brake wheel. The latter is
rubber tired and when depressed by the brake rods so as to make contact with
the cycle tire revolves at a speed proportionate to the speed of the machine and
the amount of friction imposed by the brake. A rolling rubber brake is thus
caused to act on the machine.
A spring may be used or not as required to keep the brake plates out of contact
just as the brake spring keeps the wheel lifted out of gear until required.
As will be understood the mechanism for operating the brake wheel plates and
brake wheel from the handles of the machine may vary but the rider's hand action
will remain similar to that now in use.
004 1 of Nov 1801
A. CRAWHALL CHAPMAN,
.3, St. Nicholas Buildings, Newcastle-on-Tyne,
Patent Agent for Applicant..
COMPLETE SPECIFICATION.
A New or Improved Brake specially applicable to Cycles having
Pneumatic or Cushion Tires.
I, ANDREW LOWREY of 9 Pearson Street, South Shields in the County of
Durham, Barman 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.
11
My invention relates to a new or improved brake specially applicable to cycles
of every description having pneumatic or cushion tires.
As ordinary brakes applied to pneumatic or cushion tires on cycles are quite
unsuitable for the purpose by reason of the rapid wearing out of the tire under the
brake friction have devised a remedy whereby 1 apply the brake power to an
auxiliary brake wheel.
By my invention I mount the brake wheel on a radial lever or levers centereil
on a projection formed on or in connection with the front fork or vertical. Within
the brake wheel and designed to work against its inner circumference I arrange

page_text: the brake plate or plates which may be mounted on the ends of rods leading thence
in the case of velocipedes to the cycle handle bars in the ordinary way.
A simple crank device connecting a point or points on the rods with a center of
motion such as the axle of the brake wheel enables the brake plates to be easily
thrown in or out of gear with the brake wheel.
The latter is rubber tired and when depressed by the brake rods so as to make
contact with the cycle tire revolves at a speed proportionate to the speed of the
machine and the amount of friction imposed by the brake.
A rolling rubber brake is thus caused to act on the machine.
A spring may be used or not as required to keep the brake plates out of contact
just as the brake spring keeps the wheel lifted out of gear until required.
As will be understood the mechanism for operating the brake wheel plates and
brake wheel from the handles of the machine may vary but the rider's hand action
will remain similar to that now in use.
I will now fully describe my invention with reference to the accompanying
drawings in which
Figure 1 shows a side elevational view and Figure 2 a front vertical section of
the brake mechanism as applied to a velocipede.
Like marks of reference indicate like parts throughout the following description.
Referring to the drawings, the brake wheel a is shown mounted on the outer
ends of a pair of radial levers a' centered at a' on the front fork a³.
Within the brake wheel and designed to work against its inner circumference I
arrange a pair of segmental brake plates 4 and to the lugs on the back thereof
attach the ends of the two rods 5 which are led thence upwards and connected
together above the brake wheel so as to form one rod 6 leading up to the handle 1
where it is connected to the brake handle or lever 7 centered at 8 in the usual
way and controlled by a spring 9 whose normal function is to hold up the brake
wheel and rods a' from the tire T of the velocipede.
A pair of cranks or levers are pivotted so as to connect the rods 5 with the
axle 12 of the brake wheel and a springs may be. further fitted as shown for
the purpose of assisting in keeping the brake plates out of gear when not so
required.
The action of the mechanism is thus such that when the rider applies the
leverage at the brake handle 7 he overcomes first the ordinary resistance of the
spring 9 and depresses rods 6 and 5 and through the connection of the cranks
between the rods 5 and axle 12 the radial rods a' are also depressed until the
rubber tire t of the brake wheel engages the tire T of the velocipede. The further
depression of the rods 6 and 5 by lever 7 acts to push down the brake segments 4
tightly against the inner circumference of the brake wheel which is thus retarded to
the requisite extent in its revolution caused by its contact with the tire T and thus
the brake is applied.
The springs can be dispensed with but I prefer to use it as it assists in effecting
the purpose above specified.
The brake plates may be faced with leather or hard wood and the tire of the
brake wheel may have a flat face for pneumatic tires and a concave one for cushion
tires due to the difference in their compressibility.
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. For braking velocipedes the use of a separate or auxiliary rubber tired brake
wheel mounted on radial rods projecting from the fork the axle of the brake wheel
being connected by cranks to lateral rods the lower ends of which are provided
with brake plates arranged to act at will on the inner circumference of the brake
wheel while the upper extension of the said lateral rods is connected to the main
brake applying lever and provided with a spring to keep the brake wheel normally
out of gear the several parts being arranged so that when the brake leverage is

page_text: applied the rubber tire of the brake wheel is first thrown into contact with and
caused to revolve by the tire of the velocipede the revolutions of which can be
then impeded by an increased pressure of the brake segments acting on the inner
circumference of the brake wheel substantially as herein set forth.
2. For braking velocipedes and for saving the destruction of the tires of these
machines the combination with a radially mounted rubber tired brake wheel of
rods 5 and 6 cranks and brake plates 4 all arranged and designed to operate
substantially as herein described and illustrated in the accompanying drawings.
Dated this 19th day of February 1892.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.