Year: 1899

page_text: Date of Application, 18th Oct., 1899
Complete Specification Left, 18th July, 190) -Accepted, 17th Nov., 1900
I, SAMUEL BREEZE, of 11, Guernsey Road, Magdalen Road, Norwich, in the
County of Norfolk, Cycle Maker, do hereby declare the nature of this invention
to be as follows:-
This invention consists of a clutch on the crank axle, hidden in the bottom
bracket, which clutch is made in two parts and fastened on by end collars.
To this clutch is fastened a small lug to which is pivotally connected a
curved arm terminating in a fork. The inner sides of the fork carries adjustable
pads which engage with the rim of the wheel.
The clutch allows the crank axle to rotate freely in the forward direction,
but directly the pedal is worked backwards, the said hub becomes wedged on
a piece of wire lying inside the clutch and cannot be moved. Then simul-
taneously the brake is thust forward, and slides by means of side lugs on the
sidestays of the machine.
When the pedal resumes the forward direction a coiled spring around the
arm helps to draw the brake fork back out of contact with the rim.
Dated this 18th day of October 1899.
S. S. BROMHEAD,
Agent for Applicant, 33, Cannon Street, E.C.
I, SAMUEL BREEZE, of 11, Guernsey Road, Magdalen Road, Norwich, in the
County of Norfolk, Cycle Maker, 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:
-
This invention consists of a clutch of cylindrical shape cut longitudinally
into two parts which when put together embrace the centre part of the crank
axle inside the bottom bracket of the cycle or the like. A thread is cut on each
end of the clutch, over which a threaded collar or ring is fitted to securely hold
the two parts of the clutch together.
To this clutch is fastened a small lug or pin to which is pivotally connected
an arm, preferably curved, terminating in a fork. The inner sides of the fork
carry pads which may be adjusted in any simple manner and which when the
brake is operated engage with the rim of the wheel. The fork may also be
adjusted by a nut or nuts on the end of the curved arm.
The clutch allows the crank axle to rotate freely in the forward direction,*
077

page_text: but directly the pedal is worked backwards, the said hub becomes wedged on
a small roller, which may be formed of wire, lying in a wedge shaped recess
between the inside of the clutch and the crank axle--this wedging action draws a
curved arm forward and with it the fork which slides on the side stays or other
suitable part of the machine being held in that position by suitable lugs and
thus the adjustable pads are pressed into both sides of the rim of the wheel.
When the pedal resumes the forward direction a coiled spring around the
arm helps to thrust the brake back into its normal position and out of contact
with the rim.
I will now describe my invention with reference to the accompanying drawings,
which shows the improved brake in perspective and the relative position of the
wheel in dotted lines.
a, is the bottom bracket of the bicycle or other velocipede.
b, is the crank axle and c, the two parts forming the clutch, the collar or
ring round the position of same being shown by dotted lines C². The lower
of these half-clutches is. pivotally connected to the brake rod d, by the pivot
pin c¹.
e, is a short steel roller placed in a wedge shaped slot between the lower part
of the clutch and the axle, which serves to wedge the crank axle on to the
clutch directly the pedal is worked backwards, and at the same time draws
forward the brake on to the rim of the wheel. By the aid of the spring f, the
brake resumes its normal position, when the pedals are worked in the forward
direction, and the wedge action of the roller is suspended.
Part of the brake embracing the rim of the wheel shown by is fork-shaped
and slides along the back-stays or other suitable part of the machine on the
lugs g.
The brake pads h, may each be adjusted by being fitted to the fork by a bolt
and nut which when loosened are free to slide in a slot or groove in the fork
of the brake, and secured in the right position by tightening the said bolt and
nut, or by any other simple means.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
(1) In a back pedalling brake for cycles and the like the combination of the
clutch c, with end collars, (the position of which is shown in dotted lines) and
wedge roller e, pivot pin c¹ and rod d, spring f, fork i, with lugs g, and adjustable
pads or blocks h, as herein described and set forth.
(2) In a back pedalling brake the adjustable pads h, as herein described and
set forth.
(3) In a back pedalling brake the clutch formed of two semi-annular parts
with wedge shaped slot and roller as herein described and set forth.
Dated this 18th day of July A.D. 1900 ·
S. S. BROMHEAD,
Agent for Applicant,
33, Cannon Street, London, E.C.