An Improved Cycle Brake.
Year: 1899

page_text: Date of Application, 26th Apr., 1899
Complete Specification Left, 19th Jan., 1900-Accepted, 10th Mar., 1900
An Improved Cycle Brake.
JOSEPH MARTIN, Cotton Operative, 299, Halliwell Road, Bolton, Lancs, ISAAC
MARTIN, Grocers' Assistant, 299, Halliwell Road, Bolton, Lancs, do hereby declare
the nature of this invention to be as follows:-
A cycle brake, which is to work on the rim of either the front or back wheels,
with lever or chain. Shaped like the letter M, which is worked by the levering
of the inside arms towards a horizontal position; thus throwing the bottom of the
outside arms which works on a pivot (a) on to the rim. The advantage being that
it also retains the same power if the wheels be out of true.
Tthis ou 1
1 1000
JOSEPH MARTIN,
ISAAC MARTIN.
We, JOSEPH MARTIN, Cotton Operative, and ISAAC MARTIN, Grocer, both of
299, Halliwell Road, Bolton, in the County of Lancaster, 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:-
It relates to cycle-brakes of the class that act upon or are brought into contact
with the rims of the cycles' wheels to effect the brake actions and our said inven-
tion consists in so constructing and arranging the several parts forming said brakes
that their effective braking actions may be freely allowed upon said rims whether
the wheels are true or otherwise.
In the accompanying sheets of drawings:-
Fig. 1 is a front view of our brake as applied to the front wheel of a bicycle.
Only such parts of said bicycle being shown as are necessary to illustrate the
application of our invention.
Fig. 2 is a side view of the parts shown by Fig. 1.
In carrying our invention into effect we make use of a frame a to which the
lever is pivotted at c. This lever is connected at k by the link to the
toggle levers d d at 1. The toggle levers d d are connected at ; ; to the brake
levers ee which are pivotally mounted at gg to the frame a.
On the lower extremities of the levers e e are secured the brake shoes f f
by their supporting shanks q being screwed and taken through said levers c'e

page_text: to be locked in position thereon by the nuts p p thus these shoes may be adjusted
to meet the requirements of the rim m whether it is narrow or broad.
The frame a is secured to the forks. t of the bicycle by the pivotal studs or
bolts g g taking through the slots h h in brackets i the said slots h h enabling
the adjustment of the positions of the levers e e and thus a further adjustment of
the brake shoes f f as occasion may require..
The actions of the several parts are as follows:-On the lever b being raised
by pulling the chain w the toggle levers d d are brought by the link to force
the upper arms of the levers e e apart (against the retracting force of the spring s)
while the lower arms of said levers e e are at such time made to approach each
other and thus press the brake shoes f f against the rim m. Should said rim m
not be in good order but be so strained or twisted that all the parts of its two outer
edges do not be in the same two vertical planes, as wheel revolves any lateral
movement that its rim m may impart to one or the other of the brake shoes ff will
be allowed for by the link swivelling on its pivots kl and that without the
pressure on said shoes f f being diminished. On the chain w being released
the retracting spring s brings all the several parts back into their normal positions
as shown by Fig. 1.
Although we have shown and described our invention as being applied to the
front wheel of a bicycle it will be seen that same may readily be applied to the back
wheel of same, or to the single wheel of a tricycle by simply forming the
brackets ii of such a shape or construction as will meet the altered forms of the
framework of the machine to which they have to be secured..
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
!
1. A cycle brake the same being. constructed and arranged to operate substan-
tially as herein, specified.
2. In a cycle brake, toggle levers, a connecting link and lever arm for operating
same, brake levers and adjustable brake shoes mounted thereon the same being
constructed and arranged to operate substantially as herein specified.
Dated this 17th day of January 1900