Improvements in or relating to Brakes for Velocipedes and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Brakes for Velocipedes and the like.
We, THE ROULETTE CYCLE COMPANY, LIMITED, Cycle Manufacturers, and
HENRY COOK, Works Manager, both of the Roulette Works, Gosford Street,
Coventry, Warwickshire, do hereby declare the nature of this invention to be
as follows:-
Our invention relates to brakes for velocipedes and the like, and has for its
objects to confine the movement of the plunger or corresponding part to a direc-
tion practically in line with the axis thereof and to provide means for lifting
and holding the said brake out of action.
In order that the nature of our invention may be readily understood, we will
describe the same as applied to a brake adapted to act upon the rim of the front
wheel of a safety bicycle, in which a plunger or the like is jointed to other parts
of the mechanism in such a way as to be liable to lateral displacement, relatively
thereto.
The hand lever and plunger rod are of ordinary construction except that the
latter is shorter than usual. A stud projects forward from the forkcrown or
from a bracket connected therewith. On the said stud are fitted two levers the
lower ends of which carry the brake blocks and the upper ends of which are
connected by toggles to the foot of the plunger rod by a joint having a fore and
aft axis. To the foot of the plunger rod we secure a projecting bar and to the
front of the stud or to some other suitable fixed part we secure an upwardly
directed rod. One of these rods is made hollow and is adapted to receive the
other rod telescopically, with a sliding fit. A suitable spring is enclosed in the
tubular rod and is adapted to act upon the solid rod so as to impel the plunger
upwards, thus tending to close the toggles and withdrawing the blocks from the
rim, and holding the brake out of action. It will be observed that the telescopic
rods confine the movements of the plunger to a direction substantially in the
axial line of the said plunger and prevents the said plunger swinging to right or
left as it would otherwise be free to do.
Although we have described our invention in connection with a toggle jointed
rim brake, we wish it to be understood that it may be applied to other brakes
in which the foot of the plunger or the like is liable to be similarly displaced
relatively to its axial line.

page_text: Improvements in or relating to Brakes for Velocipedes and the like.
We, THE ROULETTE CYCLE COMPANY, LIMITED, Cycle Manufacturers, and
HENRY COOK, Works Manager, both of the Roulette Works, Gorford Street,
Coventry, Warwickshire, 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:
-
Our invention relates to brakes for velocipedes and the like and has for its
objects to confine the movements of the plunger or corresponding part to a direc-
tion practically in line with the axis thereof and to provide means for lifting
and holding the said brake out of action.
And in order that our invention may be properly understood, we will describe
the same with the aid of the accompanying drawings, which show, by way of
example, a brake adapted to act upon the rim of the front wheel of a safety
bicycle, in which a plunger is jointed to other parts of the mechanism in such
a way as to be liable to lateral displacement, relatively thereto, but has its
movements confined to the axial line by means of our invention.
Figure I is a front elevation, and
Figure II is a side elevation, partly in section.
The same numerals refer to the same parts in both figures.
The plunger 2, which is shorter than usual, may be operated by an ordinary
hand lever or other suitable means. A stud 3 projects forward from the fork-
crown 4 or from a suitable bracket connected therewith, and is preferably made
adjustable for height. On the said stud are pivotted two levers 6, 6 the lower
ends of which carry the brake blocks 8, 8 and the upper ends of which are con-
nected by toggles or links 10, 10 to the foot of the plunger rod by a joint 12
having a fore and aft axis. To the foot of the plunger 2 we also secure a down-
wardly projecting bar 13; and to the front of the stud 3 or to some other suit-
able fixed part we secure an upwardly directed bar 14 in such a way that it is
unable to deflect to right or left. One of these bars, say 14, is made hollow and
is adapted to receive the other bar telescopically, with a sliding fit. A suitable
spring 15 is enclosed in the hollow bar and is adapted to act upon the solid bar
so as to impel the plunger upwards, thus tending to close the toggles 10, with-
draw the blocks 8 from the rim 16, and hold the brake out of action. It will
be readily seen that the telescopic bars 13, 14 confine the movements of the
plunger 2 to a direction substantially in the axial line of the said plunger and
prevents the said plunger swinging to right or left as it would otherwise be
free to do.
Although we have described our invention in connection with a toggle jointed
rim brake, we wish it to be understood that it may be applied to other brakes
in which the foot of the plunger or the like is liable to be similarly displaced
relatively to its axial line.
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. The herein described means for confining the movements of the plunger or
corresponding part of a velocipede or like brake to a direction substantially in
line with the axis of the said plunger or the like.
2. In a brake for a velocipede or the like, the combination of a plunger or the
like, a downwardly projecting telescopic bar secured to the said plunger, an up-

page_text: wardly directed telescopic bar secured to a fixed part and adapted to telescope
with the said downwardly directed bar, all combined, arranged and adapted to
operate substantially as and for the purpose set forth.
3. In a brake for a velocipede or the like, the combination of a plunger or the
like, a downwardly projecting telescopic bar secured to the said plunger, an
upwardly directed telescopic bar secured to a fixed part and adapted to telescope
with the said downwardly directed bar, and a spring enclosed in the hollow bar
and adapted to impel the plunger rod upwards, all combined, arranged and
adapted to operate substantially as and for the purpose set forth.
4. A brake for a velocipede or the like, provided with means for confining the
movements of the plunger or corresponding part to a direction practically in line
with the axis thereof and with means for holding and lifting the said brake out
of action, substantially as herein described, and as illustrated in the accompany-
ing drawings.
1000