Improvements in Brakes for Bicycles, Tricycles, and Motor Carriages.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Brakes for Bicycles, Tricycles, and Motor Carriages.
"
I, HENRY ARTHUR LAMPLUGH, of Fieldgate," 61, Wellington Road, Edgbaston,
Birmingham, in the County of Warwick, Manufacturer, do hereby declare the
nature of this invention to be as follows:-
My invention has for its object further improvements upon my Patent No. 82 of
1894, ciz. the detachability of the supplementary trough or groove referred to
and its further adaption by back pedalling to the free driving wheel cycle.
To obtain the detachability. I make my supplementary groove of thin sheet
steel, forming into a circular groove, having on its side a flange so arranged to
fit closely into the inside of the rim, it is then held firmly in its position by the-
blowing up of the tyre, which causes it to be pressed firmly against the inside
of the rim, thereby holding it firmly & securely in position.
To obtain the actuating of this brake by back pedalling, I affix a bell, or such
like shape, lever to the chain stay; upon the one arm of this lever I attach one
end of the wire or cord, the other end of the wire or cord is fixed firmly to the
chain stay, the other arm of the lever has a small additional lever or such like
device attached to it.
The action of the parts is as follows:-when the crank is forced backwards, the
teeth of the chain wheel, or studs attached to the chain wheel come into contact
with the one arm of the lever, forcing it downwards thereby actuating the other
end of the lever, and so tightening the wire or cord around the groove, thereby
braking the wheel.
When the cranks are forced forward the small supplementary lever is free to
move without actuating the brake.
nated th dar of Cuntain 1000
Improvements in Brakes for Bicycles, Tricycles, and Motor Carriages.
I, HENRY ARTHUR LAMPLUGH, of Mitre Works, Bishop Street, Birmingham,
in the County of Warwick, Manufacturer, do hereby declare the nature of my
invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
My invention consists of the improvements hereinafter described upon an
invention for which Letters Patent were granted to me No. 82 of 1894, my present
invention having for its object to permit of the detachability of the supple-
mentary trough or groove in the wheel rim described, represented and claimed in
Price Sd1

page_text: the Specification of the said Patent and further the adaptation of the said invention
to the back wheels of cycles whereby the improved brake may be applied to back
pedalling velocipedes.
In order to obtain the detachability of the supplementary trough or groove
hereinafter called the brake rim, I make the said brake rim separate from the
wheel rim and in the form of an open jointed ring having a flange on one side
the said flange having a cross sectional figure proper to fit closely one edge of the
wheel rim. The brake rim is held firmly in position when fitted on the wheel
rim by the inflated tyre of the wheel as well as by a screw pin taking in lugs on
the two opposed ends of the open jointed brake rim, the screwing up of which
screw pin effects the drawing of the two lugs together and the consequent con-
traction and tightening of the brake rim on the edge of the wheel rim.
Figure 1 of the accompanying drawing represents in side elevation the front
portion of a safety bicycle the front or steering wheel of which is provided with a
detachable brake rim according to my present invention; Figure 2 represents the
brake rim detached from the wheel and Figures 3 and 4 represent, drawn to a
larger scale than Figures 1 and 2, sectional views at right angles to one another
of a portion of the said brake rim; Figure 5 is a sectional view of the combined
wheel and brake rims and inflated pneumatic tyre.
Figure 6 represents in side elevation a safety bicycle to the back or driven
wheel of which my improved brake is applied the said brake being operated by
a hand lever.
Figure represents a portion of the back wheel of a bicycle and parts adjacent
thereto in which the brake is put in operation by back pedalling.
The same letters of reference indicate the same parts in the several figures of
the drawing.
a is the wheel rim and the open jointed supplementary or brake rim the
flanged edge of which overhangs one edge of the wheel rim as will be best
understood by reference to Figure 5. The brake rim is tightened on the wheel
rim a by drawing together the lugs bb, on the ends of the brake rim b, by
means of the screw pin c. The inflated tyre d assists in keeping the brake rim b
in place.
In applying the brake cord 7, which is preferably a vulcanised or waterproofed
cord or stranded wire, preferably covered, to the rim bone end of the said cord
is fixed to one of the branches of the steering fork at e and after passing round
the brake rim the said cord is threaded through an eye f and into the tubular
brake rod in which it is fixed by a screw or other clip h. The tubular brake
rod g is jointed to the brake lever i at or near the middle of the said lever.
By operating the brake lever i the brake rod y is lifted and the cord / tightened
in the brake rim to any extent desired by the rider and on the release of the
lever i the parts resume their normal or non-acting positions.
In applying my improved brake to the back wheel of a safety bicycle as is
represented in Figure 6 I employ a lever operating in a different manner to
that shown in Figure 1 but the brake rod g is tubular as in Figure 1 and the
brake cord is attached to the brake rod in the manner herein before described
with respect to Figure 1. The cord passes over guiding pulleys n', n² and
through an eye f and terminates at e on one of the branches of the chain stay
fork of the bicycle.
In applying my improved brake to the back wheel of a free wheel bicycle I
arrange the parts as represented in Figure 7, that is to say, the tubular brake rod
is attached to the arm of the ordinary back pedalling clutch of the free wheel
bicycle which armr has a slight angular motion in the direction of the arrow
on the back pedalling of the bicycle, the return of the arm being effected by a
spring m on relieving the pedals of back pressure. A guiding roller n is em-
ployed for the cord which after passing around the rim b is fixed at e.
Although I have described and represented my invention as applied at one side
only of the wheel I wish it to be understood that by applying a detachable brake

page_text: rim to each side of the wheel and employing two flexible cords the said brake
may be duplicated.
Having now particularly described and ascertained the nature of my
invention and in what manner the same is to be performed I declare that what
I claim is:-
First The combination with the wheel rim of a velocipede or other vehicle
of a separate and detachable brake rim grooved for the purpose of receiving the
brake cord, a flange on which separate and detachable brake rim overhangs one
of the edges of the wheel rim and is held in place by tightening the flange of the
brake rim on the edge of the wheel rim substantially as herein before described and
illustrated in the accompanying drawing.
Secondly-A brake for velocipedes consisting essentially of an additional or
supplementary detachable brake rim on one or on each side of the wheel rim in
which brake rim or each brake rim, where two are employed, a brake cord is
arranged the said cord being fixed at one end near the periphery of the brake rim
the other end of the said cord passing into a tubular brake rod in which it is
fixed the said brake rod being operated by the brake lever attached to the handle
bar of the velocipede or to an arm on the crank axle which arm has an angular
motion on the back pedalling of the velocipede the several parts being constructed
and arranged or combined substantially as hereinbefore described and illustrated
in the accompanying drawing.
Dated the Seventeenth day of May 1900.
HENRY ARTHUR LAMPLUGH.