Improvements in or relating to Velocipede Brakes.
Year: 1898

page_text: Date of Application, 3rd Nov., 1898
Complete Specification Left. 2nd Sept., 1899—Accepted. 7th Oct.. 1899
Complete Specification Left. 2nd Sept.. 1899-Accepted. 7th Oct. 1899
PROVISIONAL SPECIFICATION.
Improvements in or relating to Velocipede Brakes.
I, JOHN KEMP STARLEY, Managing Director of the Rover Cycle Co., Ltd.,
Meteor Works, Garfield Road, Coventry, Warwickshire, do hereby declare the
nature of this invention to be as follows:-
My improvements relate to velocipede brakes and have for their objects to
provide a rear wheel band brake for rear driving safety bicycles which can be
fitted to the machine after the frame has been built and the position of which
can be regulated with ease and exactitude relatively to the wheel axle when such
axle is moved, say for chain adjusting purposes.
In carrying out my invention I provide a drum on the wheel and a band to act
on such drum of any suitable construction and by any suitable means. The lever
or link device by the movement of which the band is contracted and released on
the drum is mounted on a lug fitted to one of the lower back stays. This lug is
slotted through, the slot being of such a width that the lug may be passed, slot
upwards, on to the flattened fork end in front of the point where the upper back
stay is secured to such fork end and then slid forwards to position on the stay.
The slotted part of the lug is preferably turned downwards and the lug is held
in place by a bolt or bolt and nut contracting the slot in the usual way.
To maintain the relative positions of the lug and wheel axle, I connect the two
by a rigid link. This link may take the form of an extension of one of the chain
adjusting bolt rings, the forward end of the extension being secured to the lug
in any suitable manner. When adjusting the chain, the lug should be released
first; next the wheel axle is released, moved and locked in the new position;
the movement of the axle is communicated to the lug by the link and the lug is
then re-tightened in its new position.
The brake may be operated through the Bowden mechanism (Specification
No. 25325 A.D. 1896) or any other suitable means.
I do not confine myself strictly to the above description, which is intended
to indicate the nature of my improvements without excluding modifications.
AT
1
1000
G. DOUGLAS LEECHMAN,
18, Hertford Street, Coventry, 75, Chancery Lanc, London, W.C., and
9, Exchange Chambers, New Street, Birmingham,
Patent Agent for the Applicant.
I, JOHN KEMP STARLEY, Managing Director of the Rover Cycle Company,
Limited, Meteor Works, Garfield Road, Coventry, Warwickshire, do hereby
[Price 8d.1

page_text: 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:
My improvements relate to velocipede brakes and have for their objects to
provide a rear wheel band brake for rear driving safety bicycles which can be
fitted to the machine after the frame has been built and the position of which
can be regulated with ease and exactitude relatively to the wheel axle when such
axle is moved, say for chain adjusting purposes.
And in order that my invention may be properly understood I will describe
the same with the aid of the accompanying drawings which represent two
embodiments thereof.
Figure I is a side elevation of one form of brake and the adjacent parts of
the bicycle.
Figuro II is a plan of the same, partly in section.
Figure III is an end elevation of the hereinafter described lug, separated from
the other parts.
Figure IV shows the method of getting the lug into place.
Figure V is a side elevation showing my invention applied to a brake operated
by back-pedalling.
Like numerals indicate like parts throughout the drawings.
In carrying out my invention as shown in Figs. I-IV, I provide a drum 2
on the wheel and a band 3 to act on such drum, of any suitable construction, and
by any suitable means. The lever or link device 4, by the movement of which the
bond is contracted and released on the drum, is mounted on a lug 5 fitted to one
of the lower back stays 6. This lug is slotted through, the slot 7 being of such a
width that the lug may be passed, slot upwards, as shown in Figure IV, on to the
flattened forkend 8 in front of the point where the upper back stay 9 is secured to
such forkend, and then slid forwards to position on the stay 6. The slotted part
of the lug is preferably afterwards turned downwards and the lug is held in place
by a bolt or bolt and nut 10 contracting the slot 7 in the usual way. The
driving road wheel should be absent from the frame while the lug 5 is being got
into position.
To maintain the relative positions of the lug 5 and wheel axle 13, I connect
the two by a rigid link 11. This link may take the form of an extension of one
of the chain adjusting bolt rings 12, the forward end of the extension being
secured to the lug 5 by the bolt and nut 10 or in any other suitable manner.
When adjusting the chain, the lug should be released first; next the wheel
axle 13 is released, moved and locked in the new position; the movement of the
axle is communicated to the lug by the link 11, and lastly the lug is re-tightened
in its new position.
The brake may be operated through the Bowden mechanism (14), (Specification
No. 25325 A.D. 1896) or any other suitable means.
Referring to Fig. V, the lug 5 is arranged with its slot 7 upwards and is provided
with a downward extension 15 on which is pivotted a lever 16. The lower end of
this lever carries the lower end of a short brake band 3, the upper end of which
is connected to the lug 5. The upper end of the lever 16 is adjustably connected
by the rod 25 to the arm 19, which is fixed on one end of a spindle 20 mounted
behind the bottom bracket 21. The other end of the spindle 20 carries a trip-
lever 22, and the chain wheel 23 carries one or more studs 24 in the plane of the
said trip-lever.
A clutch or the like is introduced into the driving gear to allow the pedals to
be held stationary while the machine runs on. In forward pedalling the stud 24
wipes past the trip-lever 22, but on back pedalling the said stud engages and
presses down the trip-lever 22; this rotates the spindle 20. and the arm 19 thereon.
As the outer end of the arm moves forward it carries the rod 25 with it. This
draws forward the upper end of the lever 16 and forces back its lower end, carrying
the band 3 into contact with the drum 2, thus applying the brake. The lug 5

page_text: is connected with the wheel axle 13, as before, by the rigid link 11, the forward
end of which may in this case be turned up as shown, instead of being turned
down as shown in Fig. I; though this is a mere detail which does not affect the
invention itself. The parts are operated in the manner already described with
reference to Figs. I-IV.
I do not confine myself strictly to the above description as further modifications
may be made without exceeding the fair scope of my invention.
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 I
am aware that it has already been proposed to employ a rigid connection between
the wheel axle and the lug carrying the linkwork of a band brake, and I therefore
do not make any broad claim thereto, but what I do claim is:-
1. In a velocipede band brake comprising a lug adapted to carry the device by
which the band is contracted and released, providing such lug with a slot whereby
it may be passed on to the forkend and thence on to the back stay and means for
tightening the lug on the said back-stay, the said forkend being suitably flattened
forward of the point of attachment of the upper back stay, substantially as herein
set forth.
2. In a velocipede band brake, the combination with a lug such as referred
to in Claim 1 and the wheel axle, of a rigid link substantially as and for the
purpose set forth.
3. In a velocipede band brake, the combination with a lug such as referred to
in Claim 1 and the wheel axle, of a rigid link, such link forming an extension
of one of the chain adjusting bolt rings, substantially as and for the purpose
set forth
Dated this 1st day of September 1899.
DOUGLAS LEECHMAN, M.Cy.E.I.,
Fellow of The Chartered Institute of Patent Agents,
18, Hertford Street, Coventry,
9, Exchange Chambers, New Street, Birmingham, and
75, Chancery Lane, London, W.C., Patent Agent for the Applicant.