Improved Brake.
Year: 1895

page_text: Date of Application, 23rd Oct., 1895
Complete Specification Left, 23rd July, 1898-Accepted, 12th Jept., 1598
PROVISIONAL SPECIFICATION.
Improved Brake.
1 TOM SMALL of No. 1 Claremont Place, Gateshoad-on-Tyne in the County
of Durham do hereby declare the nature of this invention to be as follows:-
The object of this invention is to render possible the application of a brake to a
wheel fitted with tyres of a destructible nature without injuring the said tyres,
and may be described as follows:-
Instead of applying a brake shoe or other frictional dovice direct to the tyre of
the wheel to be braked,-hereinafter called or referred to as the large wheel,—
a smaller wheel, drum, or roller,-hereinafter called the brake wheel,--is introduced
to make rolling contact with the periphery of the large wheel.
The motion of this brake wheel may he retarded by the application of a brake
shoe, block, or band, or other suitable device, to the periphery, sides, or interior
of the said brake wheel and if this brake wheel; so retarded be in rolling contact
with the periphery of the large wheel, the motion of the large wheel, will also be
retarded.
In order to insure good rolling contact without slipping, the brake wheel may be
covered with some non-slipping material such as india rubber, or the periphery of
the brake wheel may have its surface milled or corrogated.
The same motion which brings the brake wheel into contact with the large wheel
also applies the retarding or braking device.
The parts of the brake are kept out of action by a spring, and the same spring
may be so adapted that it holds and steadies the parts of the brake thereby
preventing rattling.
i
As a too powerful application of the brake may prevent the brake wheel
revolving, a spring may be introduced between the brake and the point at which
the power is applied, in such a manner that the power or pressure applied is
regulated according to the strength of the spring which may be adjustable.
Dated this Twenty-first day of October 1895.
POR DIARD,
1, TOM SMALL of 1 Claremont Place, Gateshead, in the County of Durham,
Agent, 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 :—
The object of this invention is to render possible the application of a brake to a
wheel fitted with tyres of a destructible nature without injuring the said tyres and
may be described as follows :—
Instead of applying a brake shoe or other frictional device direct to the tyre of
the wheel to be braked hereinafter called or referred to as the large wheel a
smaller wheel, drum or roller, hereinafter called the brake wheel, is introduced to
make rolling contact with the periphery of the large wheel or main tyre.
D

page_text: •
The motion of this brake wheel may be retarded by the application of a brake
shoe, block or band or other suitable device to the periphery, sides or interior of
the said brake wheel and if this brake wheel so retarded be in rolling contact with
the periphery or main tyre of the large wheel the motion of the large wheel will
also be retarded.
In order to ensure good rolling contact without slipping the brake wheel may be
covered with some non-slipping material such as india rubber or the periphery of
the brake wheel may have its surface milled or corrugated.
The same motion which brings the brake wheel into contact with the large wheel
or main tyre also applies the retarding or braking 'dovice.
The parts of the brake are preferably kept out of action by a spring_and.the
same spring may be so adapted that it holds and steadies the parts of the brake
thereby preventing rattling.
As a too powerful application of the brake may prevent the brake wheel
revolving, a spring may be introduced between the brake and the point at which
the power is applied in such a manner that the power or pressure applied is regulated
according to the strength of the spring which may bo adjustable.
I will fully describe my invention with reference to the accompanying drawings
in which Figures 1 and 2 show a side and front view (partly in section) of a
method of applying my apparatus and in the following description like-marks of
reference designate like parts.
Referring to the drawings, 3 is a spindle which may be operated from the brake
handle or lever in the usual or in any convenient mannor and mounted on its lower
end arrange the brake shoe 4 as shown. The spindle passes through for
example a boss 5 on the forked-piece 6 the latter carrying the brake wheel 7 which
is constructed in such a manner as to admit of pressure froin the shoe 4 being
transmitted to for example its side abeeks or flanges 8.
The periphery of the brake wheel may bo rublier-shod and the forked-piece 6
may be connected to the main framing of the machine or aparatus by radial side
bars in the usual manner, so as to stendy and control its up and down motions.
The shoe 4 may have side guide-flanges 9 adapted to work on the sides of the
forked-piece 6 or side pins on the shoe may similarly be arranged to work in slots
in the forked-piece for the purpose of guiding the motions of the shoo.
A spring 10 (not shown in Figure 2) serves not only to keep the shoe out of
contact with the brake wheel when not required but to vary the relative pressures
existing between the brake shoe and brake wheel on the one hand and the brake
wheel and the main tyre on the other.
Thus when the operator applies the brake the effect is firstly to slightly compress
the spring and to bring the brake wheel into contact with the main tyre T of the
large wheel and thus a rolling contact is effected tending to slightly retard the
main tyre; on further pressure being applied by the operator the shoe is brought
into contact with the brake wheel in further opposition to the pressure of the
spring 10 which has the effect of retarding the revolutionary motion of the brake
wheel and main tyre to the necessary extent in accordance with the pressure
applied and as the shoe pressure is exerted indirectly on the tyre so as to transmit
such pressure through a rolling contact with the main tyre, the life of the latter is
Diaterially preserved.
The drawings illustrate a method of applying the improved brake to for example
a velocipede.
Having now particularly described and ascertained the nature of my maid inven-
tion and in what manner the same is to be performed I declare that what I
claim iş-
1. The combination with a brako spindle of a brake shoe adapted to be held
out of contact with or to apply pressure. to a brake wheel carried in a suitably
arranged bracket or fork-piece, the brake wheel thus arranged being adapted, to

page_text: being arranged, combined or adapted to work substantially as and for the purposes.
herein set forth.
2. The combination of parts comprising the improved brake arranged or adapted.
for use substantially as herein described and illustrated.
Dated this 22nd day of July 1896.
A. CRAWHALL CHAPMAN,
3 St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.