Improvements in Band Brakes for Velocipedes.
Year: 1893

page_text: Date of Application, 13th Feb., 1893
Complete Specification Left, 13th Nov., 1893-Accepted, 23rd Dec., 1993
PROVISIONAL SPECIFICATION.
Improvements in Band Brakes for Velocipedes.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18
Buckingham Street, Strand, W.C., London, Patent Agent, do hereby declare the
nature of this invention a communication to me from abroad by Ernest Lehut, of
Paris, in the Republic of France, Manufacturer, to be as follows:-
This invention relates to band brakes and consists in certain improvements therein
as hereinafter described the purpose of which is to render such brakes more equable
and gradual in their action and also more powerful and also to enable them to be
adapted to the driving wheels of bicycles or safety bicycles or other velocipedes in
which the wheel to be braked is carried on a fixed axle between forks.
The improved band brake consists of two concentric bands of the same radius or
approximately so but of different breadths. The wider band is annularly recessed
on its inner side to receive and house the narrower band the end of which is hooked
or otherwise connected to the end of the wider band so as to form in effect a
prolongation thereof and provide a band brake of double the ordinary length
forming approximately two coils. A hole is provided in the outer and wider band
through which the free end of the inner and narrower band projects for the attach-
ment of a cord or chain or other device carried to a lever or other manipulator near
the hand of the rider for operation of the brake.
In applying this band brake to a wheel carried between forks, the said wheel
revolving on its axle and having a cylindrical flange for engagement of the brake
band, the end of the wider band is carried by an arm having a boss encircling the
axle and a tongue engaging in the fork so as to maintain the arm against revolution
on the shaft and yet maintain also the concentricity of the arm with the axle
throughout all variations in the position of the axle in the forks which adjustment
of the gearing or other cause may require.
The improved brake is intended to be operated by tightening the inner and
narrower band onto the brake flange so as to produce a friction which will draw the
broader band down upon the flange and so bring the latter into action.
Dated this 13th day of February 1893.
COMPLETE SPECIFICATION.
Improvements in Band Brakes for Velocipedes.
REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18
Buckingham Street, Strand, W.C. London, Patent Agent, do hereby declare
the nature of this invention a communication to me from abroad by Ernest Lehut,
of Paris in the Republic of France, 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 band brakes and consists in certain improvements therein
as hereinafter described the purpose of which is to render such brakes more equable
and gradual in their action and also more powerful and also to enable them to be
adapted to the driving wheels of bicycles or safety bicycles or other velocipedes in
which the wheel to be braked is carried on a non rotary axle adjustably fixed
between forke.
:
The improved band brake consists of two concentric bands of the same radius or
ונD

page_text: approximately so but of different breadths. The wider band is annularly recessed
on its inner side to receive and house the narrower band the end of which is hooked
or otherwise connected to the end of the wider band so as to form in effect a
prolongation thereof and provide a band brake of double the ordinary length
forming approximately two coils. A hole is provided in the outer and wider band
through which the free end of the inner and narrower band projects for the attach-
ment of a cord or chain or other device carried to a lever or other manipulator near
the hand of the rider for operation of the brake.
In applying this band brake to a wheel carried between forks, the said wheel
revolving on its axle and having a cylindrical flange for engagement of the brake
band, the end of the wider band is carried by an arm having a boss encircling the
axle and a tongue engaging in the fork so as to maintain the arm against revolution
on the shaft and yet maintain also the concentricity of the arm with the axle
throughout all variations in the position of the axle in the forks which adjustment
of the gearing or other cause may require.
The improved brake is intended to be operated by tightening the inner and
narrower band onto the brake flange so as to produce a friction which will draw
the broader band down upon the flange and so bring the latter into action.
This invention is illustrated in the annexed drawing in which
Fig. 1 represents a side elevation of the brake,
Fig. 2 being a sectional view of the brake and of the drum F adjusted to the
hub of one of the wheels of the velocipede and upon which drum the hand exerts
its pressure.
Fig. 3 represents a sectional view of the same band brake through the middle of
its breadth.
Fig. 4 is a lateral view of the band.
Fig. 5 shows the application of this brake to a bicycle.
The drum F is preferably adjusted upon the hub of the wheel opposite to the
side on which is the gear chain wheel. The drum F is surrounded by the metallic
band or strip which latter has its fixing point on a support B engaged on the axle.
The backward prolongation B' of this support engages into the fork shown in Fig. 1
in dotted lines in which the axle bearing is adjustable to allow of tensioning the
chain. This method of fastening prevents the support from turning on its own
axis, while the engagement is free, so that the support always follows the displace-
ment of the axle, whatever may be the position of the bearing in its fork.
The metallic band or strip consists of two parts, the one a of considerable
breadth being fixed on the support B, the other of smaller breadth is hooked on the
free end of the former a, while its other end passes through a slot m, in the outer
band a and receives the pulling cord for its equivalent which connects the brake
with the actuating lever L. The facings on the interior of the bands a and b,
bring the inner surfaces of these bands into the same cylindrical plane.
Although the metallic band consists of two parts it has the general form of one
continuous double rolled band.
The pulling motion exerted by the cord f, in direction of the arrow y (Fig. 1),
first presses the narrower part & upon the drum F and the friction thus originated
causes the band to act in the direction of the rotating motion, this having the effect
as already stated of pressing the outer part a into contact with the drum, whereby
the desired stoppage or lessening of speed is produced.
The centre of motion of the band lies in the axis of the supporting arm B.
The pulling cord passes over pulleys 2-which may be arranged in any suitable
way (that given in the drawing forming only an instance)-and is fixed on the
extremity of the rod T actuated by the lever L.
The pulling cord may be replaced by a fine chain at the place of the transmission
pulleys. The chain fis connected with the band 6 by means of a pin arranged at c;
d is a circular plate serving as a mud guard.
It is obvious that the brake can be applied on the front wheel instead of on the
back wheel or on both wheels at same time if so desired.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
The improvements in band brakes for velocipedes consisting :
1. In the combination of the two bands a b'on the drum mounted on the axle of
the wheel, the braking being attained by the friction of one band drawing the other
into engagement as described.
2. The combination with a band brake of the arm or carrier B centred in the
axle and displaceable therewith, but prevented from revolving by engagement with
the fork.
3. The combination in a band brake of the two bands a band the arm or carrier B
respectively arranged as and for the purpose herein described.
Dated this 13th day of November 1893.
-
K. HADDAN.