Improvements in and relating to Band Brakes for Cycles and other Vehicles.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Band Brakes for Cycles and other
Vehicles.
I, HAROLD LEIGH LOWRIE, of 35, Wakehurst Road, Wandsworth Common,
London, S. W., Engineer, do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to construct a band brake, which can be con-
veniently fixed upon the driving wheel of a cycle or other vehicle, which shall be
simple and efficient in action and the release of which may also be easily
performed.
The method by which I attain these ends is shown in the accompanying draw-
ing, in which,
Fig. 1 is a side elevation of the apparatus employed in its normal position, the
brake being out of action.
Fig. 2 shews the position of the apparatus when the brake is applied.
Fig. 3 is a cross section, through the brake drum with the strap and guard in
position.
Fig. 4 is an end view of the special arrangement of levers I employ for trans-
mitting and increasing the power applied to the brake.
Fig. 5 is a view of the arrangement I use, for transmitting the power applied
by means of a hand lever, fixed on the handle bars of a cycle, to the brake, by
means of wire, rod or gut, so as to enable the brake to be applied with equal effi-
ciency whatever may be the position of the steering head of the machine.
Figs. 6, 7 & 8 are detail views of this mechanism.
In carrying out my invention I fix a brake drum a upon the hub or axle of the
driving or rear wheel of the vehicle, this drum is encircled by a flat steel band
faced with leather or other suitable material, and the ends of this band are fastened
by eye pieces e & f to the ends of the short arms of the levers e & d as shown.
The opposite ends of the levers & dare connected to the two straight levers g&h
which are pivotted upon the screw pinj to which also an eye piece i is attached.
A wire or rod is fastened into the eye piece by screwing or otherwise.
The aforesaid levers & d are pivotted upon the screw pin which may be
extended as shown (Fig. 4) and carried through a slot m in the back stay n of the
machine (thus allowing for adjustment) or may else be fastened to a clip, so as
to embrace a back stay of any particular section.
Referring to Fig. 5, the brake rod o is formed with a slot as shown and is free
to move in any horizontal position about the semicircular lever and is at the
same time capable of being depressed by the action of the hand lever attached to
the machine. A bell crank lever and a straight lever r are connected by a
pin s passing through the bottom socket of the head and each of these levers is
provided with slots t which allow the pins u of the semicircular lever to more
freely in or out, these slots also acting as a moveable fulcrum for the semicircular
lever P.
The wire or rod is fastened to the end of the bell crank lever by such a device

page_text: as shewn in Figs. 5 & 8, thus allowing the tension in the wire or rod to be
maintained.
The working of the apparatus is as follows:-
Upon the brake rod o being depressed, the wire or rod is, through the medium
of the levers o & q s, put in tension and thus exerts a pull upon the two straight
levers &h; these levers then assume a position as shewn in Fig. 2 causing the
levers & to open out, thus bringing the short arms of these levers nearer
together and causing the band b to grip the brake drum a with very great pres-
sure. The tension upon the wire or roil & being released the levers & d g & h
are brought back to their normal position as in Fig. 1 by the spring we which is
fastened to the levers d & g as shewn in the band springs back clear off the
brake drum a into a guard as shewn in Figs. 1 & 3, thus allowing the wheel
to again run freely.
Having now particularly described and ascertained the nature of my said
invention, and the manner in which the same is to be performed, I declare that
what I claim is :-
1. A band brake for a cycle or other vehicle to be fastened on the driving wheel
or axle and constructed as herein before described.
2. The combination with an ordinary band brake, of the arrangement of levers
as shewn in Figs. 1, 2, & 4, for the purpose of increasing the power applied to
the brake.
3. The combination with a cycle band brake, of the arrangement of brake rod,
semicircular lever and bell crank lever, as shewn, to allow of the brake being
applied, whatever may be the position of the steering head of the machine.
Dated this 19th day of October 1899.
COMPLETE SPECIFICATION.
Improvements in and relating to Band Brakes for Cycles and other
Vehicles.
I, HAROLD LEIGH LOWRIE, of 35, Wakehurst Road, Wandsworth Common,
London, S.W, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
The object of my invention is to construct a band brake, which can be con-
veniently fixed upon the driving wheel of a cycle or other vehicle, which shall be
simple and efficient in action and the release of which may also be easily performed.
The method by which I attain these ends is shown in the drawings which accom-
panied my Provisional Specification, in which
Fig. 1 is a side elevation of the apparatus employed in its normal position, the
brake being out of action.
Fig. 2 shews the position of the apparatus when the brake is applied.
Fig. 3 is a cross section, through the brake drum with the strap and guard in
position.
Fig. 4 is an end view of the special arrangement of levers I employ for trans-
mitung and increasing the power applied to the brake.
Fig. 5 is a view of the arrangement I use, for transmitting the power applied
by means of a hand lever, fixed on the handle bars of a cycle, to the brake, by
means of wire, rod or gut, so as to enable the brake to be applied with equal effi-
ciency whatever may be the position of the steering head of the machine.
Figs. 6, 7 and 8 are detail views of this mechanism.

page_text: In carrying out my invention I fix a brake drum a upon the hub or axle of the driv
ing or rear wheel of the vehicle. This drum is encircled by a flat steel band faced
leather or other suitable material, and the ends of this band are fastened by eye
pieces e and f to the ends of the short arms of the leverse and d as shown. The
opposite ends of the levers c and d are connected to the two straight levers
which are pivotted upon the screw pin to which also an eye piece i is attached.
A wire or rod k is fastened into the eye piece i by screwing or otherwise.
and h
The aforesaid levers c and d are pivotted upon the screw pin l, which may be
extended as shown (Fig. 4) and carried through a slot m in the back stay n of the
machine (thus allowing for adjustment) or may else be fastened to a clip, so as
to embrace a back stay of any particular section.
Referring to Fig. 5, the brake rod o is formed with a slot as shown and is free
to move in any horizontal position about the semicircular lever p and is at the
same time capable of being depressed by the action of the hand lever attached to
the machine. A bell crank lever and a straight lever are connected by a
pins passing through the bottom socket of the head and each of these levers is
provided with slots which allow the pins u of the semi-circular lever p to move
freely in or out, these slots also acting as a moveable fulcrum for the semicircular
lever ?.
The wire or rod k is fastened to the end of the bell crank lever q by such a device
as shewn in Figs. 5 and 8, thus allowing the tension in the wire or rod to be
maintained.
The working of the apparatus is as follows:-
(t
Upon the brake rod o being depressed, the wire or rod k is, through the medium
of the levers o and 7s, put in tension and thus exerts a pull upon the two straight
levers g and h; these levers then assume a position as shewn in Fig. 2 causing the
levers c and d to open out, thus bringing the short arms of these levers nearer
together and causing the band b to grip the brake drum with very great pressure.
The tension upon the wire or rod & being released the levers c and d g and h are
brought back to their normal position as in Fig. 1 by the spring w which is fas-
tened to the levers d and y as shewn and the band springs back clear off the
brake drum a into a guard as shewn in Figs. 1 and 3, thus allowing the wheel
to again run freely.
Having now particularly described and ascertained the nature of my said
invention, and the manner in which the same is to be performed, I declare that
what I claim is :-
1. A band brake for a cycle or other vehicle to be fastened on the driving wheel
or axle and constructed as hereinbefore described.
2. The combination with an ordinary band brake of the arrangement of levers
as shewn in Figs. 1, 2, and 4, for the purpose of increasing the power applied to
the brake.
3. The combination with a cycle band brake, of the arrangement of brake rod,
semicircular lever and bell crank lever as shewn, to allow of the brake being
applied, whatever may be the position of the steering head of the machine.
Dated this 18th day of July 1900.
HAROLD LEIGH LOWRIE.