Improvements in Cycle Brakes.
Year: 1897

page_text: Date of Application, 26th Apr., 1897.
Complete Specification Left, 26th Jan., 1898-Accepted, 12th Mar.,
1898
Improvements in Cycle Brakes.
I, ALBERT TYAS, of 49, Canada Street, City of Sheffield, Fitter, do hereby
declare the nature of my invention to be as follows:-
My invention relates to improvements in the construction of the mechanism
of brakes for cycles, the object being to operate the brake by turning one of the
steering handles, and to protect the connections by enclosing them in the tubular
portions of the handle bars and the steering head.
I propose in carrying out my invention to make the right hand handle to revolve
upon the handle bar and to provide it with a nut or screw threaded part to engage
with a quick-thread screw which is connected with the end of a chain passing
up the handle bar.
The screw can slide longitudinally but is prevented from turning round, con-
sequently when the handle is turned the screw is either drawn out or in as the
case may be.
The chain passes over a segmental guide or roller before it passes down vertically,
and is connected with an adjusting link by means of which the length of the
connections can be adjusted to the height of the handle bar. The link is in turn
connected with a rod the lower end of which is fastened to the back end of the
pivotted brake lever.
A bracket is fixed in the lowest part of the tubular steering head, between the
fork, to support a coiled spring which acts upon the back end of the brake lever
to bring the brake to its normal or "off" position.
This arrangement of the mechanism operated by handle is very convenient for
retarding the impetus of a cycle when the rider is walking the machine down steep
gradients.
Instead of chain. I may use gut or cord, but I prefer chain.
Improvements in Cycle Brakes.
I, ALBERT TYAS, of 49, Canada Street, City of Sheffield, Fitter, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
contion
relates to improvements in the construction of mechanism for

page_text: operating the brakes of cycles, the object being to enable the rider to apply the
brake by a movement of one of the steering handles, and to protect the inter-
mediate mechanism by enclosing it within the tubular portions of the handle bar
and the steering head or handle bar stem.
I have illustrated my invention in the annexed sheet of drawings in which
Fig. 1, represents the actuating handle, shown partly in section to exhibit
the screw and nut.
Fig. 2, represents the centre portion of handle bar partly in section, to
exhibit the chain and its segmental support.
Fig. 3, represents a section of the lower end of the stem and top of fork with
interior mechanism.
In carrying out my invention according to the method shown in the drawings,
I make the right hand handle A, to revolve upon the end of the handle bar B,
and secure it thereto by any suitable means, such as a clip C, taking over a
collar D, and within its outer end preferably I fix a nut E, or other screw-threaded
fixture, to engage with a quick threaded screw F, to the end of which is secured a
length of chain G.
The end of the screw to which the chain is secured is squared and passes through
a corresponding opening in the handle bar, consequently it is prevented from
revolving with the handle, and is therefore moved horizontally by the rotation
of the handle and nut so as to tighten or slacken the chain as the case may be.
The chain G, before passing down the stem H, rests upon a segmental guide I,
which I prefer to construct as shown, but a pulley or rollers may be used if desired.
It consists of the segment I, carried between two arms connected with a head J,
it is placed in its position through a central opening in the handle bar, the seg-
ment being constructed to fit upon the edge of the stem as shown.
The chain passes between the two arms which keep it in its central position,
and when required for any purpose such as adjustment of the chain, the segment
can be drawn out carrying the chain with it.
To the bottom of the chain G, I connect a number of detachable links K, ter-
minating with a screw or some equivalent means by which the chain can be secured
to a brake or brake lever.
By adding to or removing some of the links K, the chain is regulated to the
height of the handle bar.
As arranged to operate a brake to clip each side of the rim of the front wheel,
the brake is applied by a direct vertical pull, and to put the brake out of action,
I fix in the open end of the stem at its junction with the fork L, a ''bonnet" or
support M, through which the links K, pass.
The top of this bonnet M, forms the point of resistance for a coiled spring N,
and its opposite end acts against the brake, so that when the chain is released by
turning the handle A, the spring N forces the brake from the rim of the wheel,
and returns it to its normal position.
My mechanism may be applied to operate brakes of various construction as well
as the one given as an illustration, as it will be understood that the brake is not
included in my invention, and although I prefer to use a chain as G, I may sub-
stitute a cord of any kind.
My arrangement being connected with and operated by the handle is very con-
venient for retarding the impetus of a cycle, when the cyclist is walking the
machine down steep gradients.
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 The improvements in cycle brakes, consisting of a rotating steering handle A,
provided with a quick thread screw and nut connected with chain passing through
the handle bar, over a segmental or circular guide and down the stem to the
brake or brake lever as herein before described and shown.

page_text: 2-In brake mechanism operated by one of the steering handles as herein-
before described, a guide or support at the junction of the handle bar with the stem
which can be removed and be withdrawn from an opening in the handle bar for
the purpose specified, substantially as described and set forth.
3 In brake mechanism operated by one of the steering handles as herein-
before described, a bonnet or spring support M, and a spring N inserted within
the lower part of the stem, and the upper part of the fork, for returning the
brake to its normal position, substantially as herein before described and shown.
4-In connection with cycle brakes, the actuating mechanism operated by one
of the steering handles constructed and arranged as hereinbefore described and
shown.
Dated the 14th day of Januore 1908
ROBT. F. DRURY,
Agent for Applicant.