Improvements in or appertaining to Bicycle Brakes
Year: 1897

page_text: Date of Application, 21st Jan., 1897
Complete Specification Left 21st Oct 1897 Accented 4th Dec. 1807
Improvements in or appertaining to Bicycle Brakes,
I, ALFRED ANGUS SCOTT, 32, Oak Lane, Bradford, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
•
This invention relates to improvements in or appertaining to brakes particularly
applicable to safety bicycles, and its object is to provide a simple and reliable
rear wheel brake.
To carry out my invention I connect the ordinary brake rod from the handle bar
to a lever preferably pivoted or having its fulcrum to the rear of the head or part
of the frame through which the stearing post passes. The fulcrum stud or pin for
this lever may be supported by an adjustable clip on the steering post.
When this lever on the head is used to operate a rim brake I may mount the
brake lever on a pin secured by adjustable clips to the frame close behind the
saddle pillar socket. And the brake lever may have two limbs each having
brake shoes to bear on the inside of the rim fairly close to the top.
In this case the brake lever is more or less bell cranked and the opposite limb to
that to which the shoes are fixed is approximately vertical and its end is connected
by a light rod or wire to the front end of the lever on the head. The lever on
the head normally lies at a suitable angle with its free end considerably higher
than its fulcrum and when this end is depressed the said light rod or wire is
brought longitudinally forward which moves the brake lever and brings the brake
shoes to bear with more or less pressure on the back wheel rim.
The brake may be arranged to stop on until released when once applied by
arranging the lever on the head in such a manner that it may be depressed
sufficiently to bring the said light rod or wire slightly below the fulcrum of such
lever.
Instead of the lever on the head being arranged on the "toggle" principle as
described I may employ a bell-crank or other suitable lever, or an eccentric or
its equivalent.
DRACUP & NOWELL.
Patent Agents, Bradford.
I, ALFRED ANGUS SCOTT, of 32, Oak Lane, Bradford, in the County of York,
Engineer, do hereby declare the nature of this invention and in what manner the
[Price 8d.1

page_text: same is to be performed, to be particularly described and ascertained in and by
the following statement:-
This invention relates to improvements in or appertaining to brakes particularly
applicable to safety bicycles, and its object is to provide a simple and reliable rear
wheel brake.
To carry out my invention I connect the ordinary brake rod from the handle
bar to a lever preferably pivoted or having its fulcrum to the rear of the head or
part of the frame through which the steering post passes. The fulcrum stud or
pin for this lever may be supported by an adjustable clip on the head or steering
socket.
This lever on the head is used to operate a rim brake and I mount the brake
lever on a pin secured by adjustable clips to the frame close behind the saddle
pillar socket. And the brake lever may have two limbs each having brake shoes
to bear on the inside of the rim fairly close to the top.
To fully describe my invention, reference is made to the accompanying sheet of
drawings forming a part of this specification, in which similar letters of reference
indicate corresponding parts in each of the figures.
Figure 1, represents a side elevation of a bicycle fitted with my improved brake.
Figure 2, is a sectional plan view of the same.
Figures 3 and 4, are views of detail hereinafter referred to.
The brake lever A on the handle bar B is of the usual form and its inner end
is connected by the rod C to the cross piece C 2 pivoted to the lower D. The
lever D is pivoted on the screw pin E fixed by the nuts F in the clip G clamped
round the head H. Figure 3, represents a sectional plan of the head H with the
said lever mounted upon it.
The brake lever J has two limbs J 2, J3 carrying the brake shoes J4, J4 fixed
to them by the screws J 5, J 5. The lever J is mounted upon the pin K carried
by the clips L, L secured to the back stays M, M of the frame. Figure 4,
represents a separate back view on a larger scale of the brake lever and clips.
The lever D is connected by the rod N to the limb J2 of the brake lever and
normally holds the brake shoes just clear of the inside of the rim O on each side
of the spokes P. It will be evident that when the lever D is depressed the rod N
will be drawn forward thus moving the lever J and bringing the brake shoes to bear
with more or less pressure upon the inside of the rim. In case the lever D is
depressed sufficiently to bring the rod N below the fulcrum pin E as shown by
the broken lines Figure 1 the brake will stop on until released.
A spring R stretched between the stay M and the eye J6 in the limb J2 is
provided to draw the shoes J 4 away clear of the rim O when the rod N is moved
to take off the brake. A left and right hand screw coupling S is preferably
employed to regulate the length of the rod N and the normal position of the brake
shoes in relation to the rim. A bell crank or other form of brake lever may be
employed instead of the form shown.
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 wha
I claim is:
The improved construction and arrangement of brake mechanism, substantially
as herein shown and described and illustrated in the accompanying drawings.
Dated this 19th day of October 1897
DRACUP & NOWELL
Patent Agents, Bradford.