Improvements in Cycle Brake Work and Fittings therefor.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Cycle Brake Work and Fittings therefor.
I, CHARLES THOMAS BROCK SANGSTER, Works Manager to the Cycle Components
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, in the first part, to cycle brake work, in the second part,
to fittings therefor in the form of clips for connecting the same to a brake shoe,
and in a third part, to a regulator for adjusting the traverse of the brake shoe.
Mounted upon the handle bar is a hand or brake-operating lever, fulcrumed
from a hanging bracket and with the inner end or short arm jointedly connected
to the outer end of a double armed short lever, fulcrumed to work within bearings
carried by a second hanging bracket, inwards of the first named, and in close
proximity to the handle bar stem, which is pierced with a vertical slot, and through
which piercing, the free end of the inner arm takes and comes under a fixed collar,
bearing or equivalently secured to an adjustably fitted rod or regulator, directed
down the middle of the handle bar stem and with the screwed lower end which also
takes down the steering post, worming into a vertical screwed hole made down a
non-rotating brake rod, whose lower end carries a brake shoe of any suitable con-
struction preferably a rim brake, although by reversing the action of the levers,
an ordinary plunger brake might be employed.
The upper end of the regulator rod passes outwardly through the lap connecting
the handle bar to the stem and is terminated by a fixed head or stop, which, when
rotated, gives a corresponding movement to the regulator rod and gives a corre-
sponding traverse to the brake shoe.
a
The connection of the brake lever with the intermediatory lever forms
kind of toggle joint, with the connection of the ends of the two levers, between
the hanging bracket, made slightly loose to admit of the said levers making an
angular movement in opening and straightening out.
The lever attachment brackets, (which are also applicable to ordinary brake
work) may consist of a band with the ends formed into sleeves cut out like
knuckle joints, and having through them, neck-ended bushes or centres, through
holes in the middle and enlarged parts of which a screw pin passes. The bearing
brackets consist of U-shaped hangers, preferably concaved upon its base to the
curvature of the handle bar, and provided with piercings wherethrough the
attachment band passes. The hanging sides or cheeks are pierced with coincident
bearing holes, through which the lever fulcrum pins pass.
In carrying out another form of my invention, I dispose between the brackets
on the handle bar, a knee or toggle joint system to the joint of which, the end
of the brake-operating lever is loosely connected, whilst the other and free end
of the inner link of the toggle is made to slide against the end of the brake rod,
which carries an inclined plane, or. the end of the brake rod may carry a stud
or pin under which an incline formation on the lever end comes.

page_text: Instead of the toggle joint being horizontally fitted, it may be hung or supported
within the hollow of the steering post or elsewhere within the ball head.
Thus, in one form of my invention, I take a pair of toggle links, with the outer
end of the lower link fulcrumed to a fixed pin or equivalent, whilst
the outer end of the other link carried to a slide to which the upper end
of the brake rod may be connected. The inner end of the brake lever is connected
directly or by a link, to the middle joint of the toggle, so that on turning the brake
lever, motion is transmitted through the toggle to the brake shoe, whereby con-
siderable power is exercised. In this arrangement the shoe is drawn up against
the rim, but in order to operate an ordinary plunger brake, the toggle is arranged
to straighten out instead of close by the turning of the brake lever.
Dotad this 8th day of January 1898
Improvements in Cycle Brake Work and Fittings therefor.
I, CHARLES THOMAS BROCK SANGSTER, Works Manager to the Cycle Components
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, in the first part, to cycle brake work particularly of
the partially-concealed type, wherein portions of the mechanism are located within
the steering column of the ball head; in the second part, to fittings therefor in the
form of clips for connecting the same to the handle bar of a cycle, and in a third
part, to a regulator for adjusting the traverse of the brake shoe.
Figure 1 of the accompanying drawings represents a back elevation of a cycle
ball-head fitted with partially concealed mechanism for imparting a lifting move-
ment to the brake rod or plunger in order to draw a pair of separated brake blocks
into contact with the inner periphery of a wheel rim.
Figure 2 is another view of the same, partly in side elevation and partly in
vertical section upon the dotted line a, Figure 1.
Figure 3 is a complete vertical section of the ball head and concealed parts of
the brake upon the dotted line ¹, Figure 1.
Figure 4 is an elevation and Figure 5 a longitudinal vertical section of one of
the improved attachment clips or brackets by means of which the brake lever is
connected to a handle bar.
Figure 6 is a transverse vertical section of the said bracket, upon the dotted
line, Figure 5, but with the lever fulcrum pin and its nut shown detached.
Figure 7 is an edge view of the band clip and an elevation of its tightening
screw.
Figures 8 and 9 respectively represent a front elevation and an edge view of
the bracket part of the attachment.
Figures 10, 11 and 12 represent an elevation, an edge view and a horizontal
section of the compound-jointed brake-operating lever by means of which the
lifting action is imparted to the brake rod.
Figure 13 represents an elevation of the two parts of the brake lever detached,
and
Figure 14 represents a horizontal section of the same.

page_text: The same letters of reference indicate corresponding parts in the several figures
of the drawings.
Mounted upon the handle bar a, of a cycle is a hand or brake-operating lever b,
fulcrumed from a hanging bracket c, and having its inner end or short arm b¹,
jointedly connected to the outer end, of a double armed short lever d, also
fulcrumed to the handle bar by a second hanging bracket c', inwards of the
first-named, and in close proximity to the handle bar stem a', which is pierced
with a vertical slot a², through which the free end of the inner arm ², of the
lever d, extends and comes under a collar or equivalent bearing secured to an
adjustably fitted rod or regulator e, directed through the lap joint a³, of the handle
bar and down the middle of the stem, with the screwed lower end &, which also
takes down the steering column, worming into a vertical screwed hole f¹, made
down a non-rotating brake rod or plunger f, whose lower end carries, in this
particular form, a rim-brake shoe g, of any suitable construction.
The upper end o³, of the regulator rod, passes outwardly through the lap con-
necting the handle bar to the stem and is terminated by a fixed head or turn e
which, when rotated, gives a corresponding movement to the regulator rod and
an equivalent traverse to the brake shoe and thus adjusts the position of the said
shoe relative to the rim to be braked.
The connection of the hand-lever with the intermediary lever forms a kind of
toggle joint, whilst the joint connection 62, of the meeting ends 63, d, of the two
levers 6 and d, at a point intermediate between the hanging brackets c, c¹, may be
slightly loose so as to admit of the said levers making the desired relative angular
movements when rocked for applying the brake and afterwards straightening out
in resuming their normal positions.
The downward return movement of the brake rod for taking off the brake on
pressure upon the hand lever being relieved is effected by means of a spring h
encircling the lower portion of the brake stem f, and disposed between an
abutment collar f³, or its equivalent upon the said stem and a suitable upper
abutment, such as a diaphragm or cross piece i, having a piercing 2, wherethrough
the brake rod works and being secured within the interior of the steering column
which thus encloses and conceals the adjustable brake rod (comprising the regulator
and the hollow stem) and the return spring.
The rotation of the brake shoe and its inside screwed sleeve or stem is prevented
by the sides g¹, of the brake shoe having hook-like extensions or clips g2 adapted
to partially embrace the fork side members at, between which the brake shoe is
disposed.
The particular form of lever attachment bracket c, c', (which are also applicable
to ordinary brake work) represented consists of a band c², with the ends formed
into sleeves c³ cut out like knuckle joints, and having within them, neck-ended
bushes or centres c³, through holes in the middle and enlarged parts of which, a
screw pin c, passes. The bearing bracket c, consists of a U-shaped hanger,
preferably concaved upon its base c7, to the curvature of the handle bar, and
provided with piercings c³, wherethrough the attachment band, which connects
the bracket to the bar, passes, whilst the hanging sides or cheeks c³, are pierced
with coincident bearing holes clo, for the reception of the lever fulcrum pin c",
which is secured by a nut c12, and prevented from rotation by a key-piece c¹³, taking
into a gap c, in the edge of one of the holes c¹º.
Figure 11 represents a compound jointed operating lever constructed according
to my invention and designed to transmit a downward movement to the brake rod,
as required in the case of an ordinary direct-acting or plunger-brake.
bis the one member of the compound lever, which is fulcrumed at c, and has
its longer arm 61, conveniently disposed for constituting the hand grip, whilst
the other and shorter arm 63, is jointedly connected at 63, to the second member d,
inwards of its fulcrum at d. The other and free end d², may extend into the
interior of handle bar stem and bears upon the top of a collar e¹, of, or is other-
wise operatively connected to, a brake rod e.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
First In cycle brake-work, the employment of a compound jointed operating
lever, consisting of two lever-elements, one of which is fulcrumed to the handle
bar or framing of a machine, and operatively connected with the brake rod at its
inner end, and jointedly connected at its outer end, to the short arm of the second
and separately fulcrumed element, of which the longer part constitutes the hand
grip, substantially as described and set forth.
Secondly-The modified form of compound jointed brake-operating lever
arranged and operating substantially as described and set forth in Figure 15.
:
Thirdly In brake work for cycles, locating within the hollow of the steering
column, a sliding and adjustable rod, which is traversed by an inwardly extending
end of an operating lever acting upon a collar secured to the upper part of the
said rod, whose lower part is provided with a brake shoe, substantially as described
and set forth.
Fourthly In partially-concealed cycle brake mechanism, the means herein
described for regulating the length of the brake rod and adjusting the position
of the shoe relative to the wheel, consisting of a rotating and screwed regulator
rod taking into the screwed hole of a non-rotating plunger terminated by a brake
shoe, whilst an extending end of the said regulator is provided with a head or turn,
substantially as described and set forth.
Fifthly: Rim-brake mechanism for cycles, consisting of a compound-jointed
operating lever having double fulcra upon a handle bar and acting to give a
lifting traverse to an adjustable and spring depressed brake rod, located within
the interior of the steering column of a cycle and outwardly terminating in a brake
shoe adapted to act upon the rim of a wheel to be braked, substantially as described
and set forth.
Sixthly: A combined fulcrum bracket and attachment clip for brake levers,
consisting of a U or staple-shaped bracket, through holes in the closed and seated
end of which, the band of the clip passes, with the free ends drawn together by a
screw or equivalent, substantially as described and set forth.
Dated this 29th day of September 1898