Year: 1898

page_text: Improv
I, CHARLES THOMAS BROCK SANGSTER, Works Manager to The Cycle Com-
ponents Manufacturing Company Limited, of Bournbrook, near the City of
Birmingham, do hereby declare the nature of this invention to be as follows:-
This invention relates to the brake work of cycles, and has for its object,
to simplify the construction of, and to conceal some of the parts of the brake
mechanism by locating the same within the hollow of the steering post.
According to my improvements, the brake operating lever is fulcrumed to a
clip or bracket carried upon the handle bar and its inner end extends through
a vertical slot or clearance in the side of the handle bar stem, and takes upon
the top side of a collar or plate located near the upper end of a steering rod
directed axially down the interior of the steering head, whilst the lower end
screws into a brake shoe rod, whilst the upper end of the said rod takes through,
and is guided by a hole in the lap junction of the handle bar with its stem.
The upper end of the brake-shoe rod which is hollow and is side slotted at
its lower end, has a collar for one end of the brake-return spring to abut against,
whilst the brake shoe has a stalk proceeding upwards from the top side of its
carrying plate, and is made fast by a nut taking upon the conical screwed end
of the brake shoe rod, whose slot works over a stud or finger located within the
bore of a hole made through a diaphragm crossing a hole made up the middle
of the fork crown, whereby rotation of the brake rod is prevented when making
its sliding movement. The lower end of the return-spring rests upon the inner
or top side of this pierced diaphragm and comes between it and the collar of the
brake shoe rod, which slides with the brake rod proper.
The brake shoe consists of a curved or bowed foundation plate with gapped
ends, terminated by knuckles through which pins are passed in affixing the
rubber or other brake contact in position. This contact consists of a rubber
pad, with the middle of its ends formed into knuckles or sleeves which correspond
or coincide with the knuckles in the ends of the foundation plate, to which it
is secured by the pins being passed transversely through the knuckles of the
said plate and the coinciding sleeves of the contact.
1 ix-
101
1
1000

page_text: I, CHARLES THOMAS BROCK SANGSTER, Works Manager to The Cycle Com-
ponents Manufacturing Company Limited, of Bournbrook, near the City of
Birmingham, 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 relates to the brake work of cycles, and has for its object,
to simplify the construction of, and to conceal some of the parts of, the brake
mechanism by locating the same within the hollow of the steering column.
Figure 1 of the accompanying drawings represents a front elevation of a bicycle
fitted with partially-concealed brake mechanism constructed and arranged
according to my invention.
Figure 2 is an elevation, upon an enlarged scale of the ball head of the
machine, with cognate parts and within the steering column of which the
plunger and spring of the brake are concealed.
Figure 3 is a complete vertical section of the said head, showing the con-
struction, and arrangement of the whole of the brake mechanism.
Figure 4 represents a side elevation of the brake shoe with the lower end of
the plunger, the spring and its abutments, separately.
Figure 5 is a vertical section of these parts, shown enclosed within the lower
end of the steering column.
Figure 6 is a like view as Figure 5, but showing the respective parts in the
positions they assume when the brake shoe is depressed.
Figure 7 represents separate detail views of the lower end of the brake rod,
the top spring abutment, the spring, the lower stationary abutment and the
brake shoe with its plunger sleeve.
Figure 8 is another and separate view of the said shoe and plunger, shown
partly in vertical section and partly in back elevation.
Figures 9 and 10 represent, upon an enlarged scale and respectively in plan
and edge view, the said bottom abutment or plate against which the foot end
of the spring takes a bearing and Figure 11 is a horizontal section, also upon
an enlarged scale of Figure 5 on the dotted liner but with the brake spring
removed.
The same letters of reference indicate corresponding parts in the several
figures of the drawings.
In the particular form of my invention represented, the brake-operating
lever a, is fulcrumed to a clip or bracket b, (which may be of any construction)
carried upon the steering handle bar c, of a cycle, and its inner end a¹, extends
through a vertical slot or clearance c¹, in the side of the handle bar stem c²,
and takes a bearing upon the top side of a collar or plate, located near the
upper end of a brake rod d, directed axially down the interior of the steering
head 3, with the lower end 2, of it screwing into the inside wormed neck e¹,
of a brake shoe sleeve or plunger e, whilst the extreme upper end of the said rod
takes through, and is guided by, either a plain hole made in the lap junction c
of the handle bar with its stem or through a guide sleeve c³, such as shewn,
fitted thereto.
The upper and outside screwed part 3 of the brake shoe sleeve or hollow
plunger, which is vertically slotted at e, down the back, is provided with an
adjustable collar f, for one end g', of the brake-return spring g, to abut against

page_text: whilst the lower or foot end 93, of the said return spring rests and takes its
bearing against the top side of a diaphragm or pierced plate i, secured by
screws 2 (or otherwise) preferably to the underside of the bottom plate 6, of
the front-fork crown c, in such a manner as to enclose the lower end of the
steering column 8, whilst through the central piercing 23, of the said diaphragm
or abutment plate, the sleeve hollow plunger or stem of the brake shoe passes
and works and is guided in its vertical sliding movement and at the same time
prevented from rotation, by a finger nib or equivalent projection 23, directed
inwardly from the edge of the piercing, taking into the vertical slot e³, in the
brake shoe stem.
By thus disposing the spring around the stem of the brake shoe and disposing
it between a relatively stationary abutment secured to the fork crown and a
second abutment made fast to the brake shoe stem, which is connected to and
slides with, the brake rod, and by enclosing the whole of the said parts within
the steering column connecting the handle bar to the front forks, an efficient
concealed brake mechanism is provided. Further, by the employment of a pro-
jection on the one part taking into a slot or clearance in the other for preventing
the rotation of the brake rod in sliding, the twisting of the brake shoe is pre-
vented so that, when depressed, it always makes a direct and positive impingement
upon the periphery of a wheel to be braked.
Instead of a finger or projection on the diaphragm taking into a slot in the
brake shoe stem, a rib or feather on the outside of the said stem may (with the
same effect) take into and slide within a gap or clearance cut within the edge
of the hole in the diaphragm through which the said stem works.
The brake shoe j, may be of any approved construction, but preferably consists
of a curved or bowed foundation plate ', with gapped ends 2, terminated by
knuckles, through which pins 14, are passed in affixing the rubber or other
brake contact 15, in position. This contact consists of a rubber pad, with the
middle of its ends formed into knuckles or sleeves 7, which correspond or coin-
cide with the knuckles 3, in the ends of the foundation plate, to which it is
secured by the pins being passed transversely through the knuckles of the said
plate and the coinciding sleeves of the contact.
The adjustment of the distance between the brake shoe and the brake rod
collar d, upon which the end of the lever a, impinges may be effected by screwing
the said rod into or out of the screwed neck of the sleeve e, through rotating the
same preferably by means of a screw-driver or other instrument engaging with the
notched outer end ³.
Instead of employing a return spring encircling the brake rod as described,
the return movement of the parts may be effected by means of an external
spring acting upon a portion of the brake lever.
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:-
First: In partly concealed brake work for cycles, locating within the hollow
interior of the steering column a vertically sliding brake rod, suitably guided
and operated by a lever and with the lower end of the same adjustably connected
-preferably by screwing, to the hollow stem of an external brake shoe, the
rotation of which is prevented by a projection upon a relatively stationary part
engaging in a vertical slot in the brake stem or rod, or vice-versa, whilst the
return movement of the parts is effected by a spring disposed between an abutment
carried by the steering column and a collar on the brake rod, substantially as
described and set forth.
Secondly-In partially concealed brake mechanism for cycles, the employ-
ment of a sliding and adjustable brake rod, enclosed within the steering column
of a cycle and with its upper part provided with a collar, upon which the end

page_text: of a brake lever extending inwardly through a clearance or hole in the handle
bar stem, whilst the lower part of the said rod is connected with a direct-acting
and spring-returned brake shoe, arranged and operating substantially as described
and set forth.
Thirdly: A shoe for cycle brake work, consisting of a metal foundation plate
and a rubber or other non-metallic contact or pad, with the one part being
secured to the other by cross pins passing through coinciding knuckles of the
foundation and contact respectively, substantially as herein described and set
forth.
WE way of september
CHARLES THOMAS BROCK SANGSTER.
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.