Year: 1894

page_text: Date of Application (in United Kingdom), 8th Mar., 1894
Complete Specification Left, 7th Dec., 1894-Accepted, 19th Jan., 1895
I, PIERRE ESCALUP, of 11, Faubourg du Pont Neuf, Limoges, (Haute Vienne)
France, Railway Inspector, do hereby declare the nature of this invention to be as
follows:-
The apparatus comprises three principal parts: 1st; the operating mechanism.
the intermediate connection. 3rd; the brake.
2nd;
I will describe the same with reference to the accompanying drawings.
The operating mechanism is composed of a multiple threaded screw and its nut.
The screw V is rotated by the cyclist by means of the handle P fast thereon, thus
traversing the nut E placed between two guides G in a tube T fixed on the end of
the handle bar in place of the ordinary handle. n is a bearing in which the inner
end of the screw V is journalled. The handle P which conceals the whole, carries
at its inner end a ratchet toothed ring with which engages a detent H mounted on
tube T and serving to retain the handle in the position to which it has been rotated
by the cyclist. v is a screw for retaining the handle upon, and preventing it from
slipping off, the tube T upon which it turns. The nut E has two small studs to
which are connected the ends of a fork B to the inner end of which is attached a
cord Z of very fine wire which is contained within the tubular handle bar and
passing over a grooved guide segment S is connected to the tension device Y.
This latter is composed of a stirrup-piece B' of steel wire rivetted to a nut K which
receives the screw rod L jointed to the tail end of the brake spoon F which acts upon
the front wheel. O is a guide fixed in the inner tube of the steering fork spindle
having a rectangular opening through which the limbs of the stirrup-piece pass so
as to prevent the latter from turning when it is desired to readjust the brake, to
suit the height of the handle bar by means of the screw rod L. The brake spoon F
is pivoted to the head of the steering fork and jointed to the end of the screw rod L,
and is constantly held out of action by a spring r, to an extent limited by a slotted
guide B fixed to the head of the steering fork by a screw b by which the mud
guard is secured. X is a plate secured by two lugs and covering the aperture in
the handle bar at which the segment S is introduced, and the groove in said
segment is oiled.
OPERATION.
The brake acts by traction, it being sufficient to turn the handle P and rotate
screw V in order to draw the nut E backwards and so immediately apply the brake.
The detent is held by a spring in engagement with the ratchet ring on the handle
and retains it and keeps the brake applied until the thumb-knob M which projects
from the casing of the detent is pressed backwards to release the detent, whereupon

page_text: the handle being freed is returned to its initial position by the stress of the spring r,
whose tension has been increased and regard being had to the pitch of the screw V,
the brake being at same time taken off.
The detent may be held out of action by screwing the end of the stem of the
thumb-knob M into a hole in the handle bar T so as not to retain the handle.
The wire rope may be replaced by a single steel wire or wires sufficiently fine to
follow the curves of the ordinary steering handles and slide freely over the
segment S to the small extent required which is not more than about half an inch.
The handle may be chequered to prevent the hand slipping.
Dated this 8th day of March 1894.
P. ESCALUP,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
improvements in Brakes for Bicycles and other similar Vehicles.
I, PIERRE ESCALUP, of 11, Faubourg du Pont Neuf, Limoges, (Haute Vienne)
France, Railway Inspector, 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 :-
The apparatus comprises three principal parts: 1st; the operating mechanism.
2nd; the intermediate connection. 3rd; the brake.
I will describe the same with reference to the drawings accompanying my
Provisional Specification.
The operating mechanisin is composed of a multiple threaded screw and its nut.
The screw V is rotated by the cyclist by means of the handle P fast on the
screw V along which the nut E is traversed, the nut being fitted to slide between
two guides G which prevent the nut turning and are formed within a tube T fixed
on the end of the handle bar upon which the handie P rotates, and in which is fixed
the bearing n for the inner end of the screw V. The handle P has at its inner end
a ratchet toothed ring with which engages a detent H mounted on the tube T and
serving to retain the handle in the position to which it has been rotated by the
cyclist. is a screw for retaining the handle upon the tube T on which it turns.
The nut E has two gudgeons to which are connected the ends of a fork B to the
inner end of which is attached a cord Z of very fine wire which is contained within
the tubular handle bar and passing over a grooved guide segment S is connected to
the tension device Y. This latter is composed of a stirrup piece B' of steel wire
rivetted to a nut K which receives the screw rod L jointed to the tail end of the
brake spoon F which acts upon the front wheel. O is a guide fixed in the inner
tube of the steering fork spindle having a rectangular opening through which the
limbs of the stirrup piece pass so as to prevent the latter from turning when it is
desired to readjust the brake connections to suit the height of the handle bar, by
means of the screw rod L. The brake spoon F is pivoted to the head of the
steering fork and jointed to the end of the screw rod L and is constantly held out of
action by a spring r, to an extent limited by a slotted guide B² fixed to the head of
the steering fork by a screw b by which the mud guard is secured. X is a plate
secured by two lugs and covering the aperture in the handle bar at which the
segment S is introduced, and the groove in said segment is oiled.
The operation of the brake is as follows:-By turning the handle P and rotating
the screw V the nut E is drawn backwards and by tension on the cord Z applies the
brake. The detent is held by a spring in engagement with the ratchet ring on the
handle and retains it and keeps the biake applied until the thumb knob M which projects
from the casing of the detent is pressed backwards to release the detent, whereupon

page_text: the handle being freed is returned to its initial position by the stress of the spring r,
by which the brake is at same time taken off.
The detent may be held out of action by screwing the end of the stem of the
thumb knob M into a hole in the handle bar T so as not to retain the handle. The
wire rope may be replaced by a single steel wire or wires sufficiently fine to follow
the curves of the ordinary steering handles and slide freely over the segment S to
the small extent required which not more than about half an inch. The handle
may be chequered to prevent the hand slipping.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A brake for bicycles and tricycles, consisting of a screw and nut in combination
with and operated by a rotary handle and in combination through a tractional
connection passing through the handle bar and steering head, with a lever brake
spoon or equivalent, whereby the application of the brake is effected by the rotation
of the handle, substantially as specified.
2. In the herein described brake, the combination, with the rotary handle screw
and nut, of the ratchet and detent mechanism, substantially as specified, for
retaining the brake applied.
3. The particular combination and arrangement of the parts of the brake
operative mechanism contained within and operated by the rotary handle.
4. The herein described brake operating mechanism substantially as specified.
Dated this 7th day of December 1894.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.
A. M. & WM. CLARK,
53, Chancery Lane, London, Chartered Patent Agents.