Improvements in Velocipedes.
Year: 1889

page_text: Date of Application, 29th July, 1889
Complete Specification Left, 29th Apr., 1890-Accepted, 31st May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Velocipedes.
WALTER CHATWOOD BURTON of Ambleside, Flixton near Manchester, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
My invention relates to improvements in and for bicycles, tricycles, and other
velocipedes, and particularly, relates to the cranks, combination of crank & lever
pedalling motion, and a brake.
1st. The mechanism of my improved crank consists essentially of a short arm,
with usual boss, for revolving upon a fixed centre.
This arm is provided with a slot, into which a second arm and actual crank, can be
secured, at such positions as to suit any leverage of rider. Upon the fixing stud of
the latter crank, and between the arms and their faces respectively, the end of a
connecting rod can freely turn, for the purpose of transmitting motion forwards.
2nd. I arrange the frames of velocipedes in triangular forms, and communicate
motion to the main axle by a combination of rotary and curvilinear, or crank, and
lever motions respectively.
Each motion being worked by a separate rider viz. fore and hind of the central
driving wheel axle.
My brake device or mechanism consists essentially of a rubber mounted spoon,
which is actuated by a tension rod. The latter being connected at its upper extremity
with a handle lever, or similar mechanism, which has its fulcrum at one extremity,
whilst the power is applied, at the other extremity, and the connection of the rod
is between. I may in some cases prefer the ordinary spoon, actuated by this lever
mechanism.
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COMPLETE SPECIFICATION.
Improvements in Velocipedes.
WALTER CHATWOOD BURTON of Rose Villa Latchford, near Warrington, and
formerly of Ambleside, Flixton, near Manchester, in the County of Lancaster Mechanical
Engineer 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 :-
My invention relates to improvements in and for velocipedes, such as bicycles,
tricycles, tandems &c. and particularly relates 1st to a special improved crank, 2nd to
a combination of crank and lever pedalling motion for tandems and 3rdly to an
improved brake device or mechanism.
The mechanism of my improved crank consists essentially of a short arm, with the
usual boss for turning with or securing to a spindle or centre.
This said arm is provided with a slotted portion into which a second and actual
crank can be secured at any convenient leverage, to suit the rider. Upon the fixing
stud of the crank and between the arm, and crank faces respectively, the end of a
connecting rod can freely turn.
This rod is used for the purpose of transmitting motion to the main driving gear
or axle.
I make no claim to the 2nd part of my invention.
The 3rd part of my invention consists of a spoon prepared to receive a rubber.
This spoon is actuated by a rod in tension. The rod, (at its upper end) is connected

page_text: to the brake, or handle lever, at some point between the fulcrum, and the lifting end.
So that the fulcrum and the point of application of the power of the lever are at
opposite ends.
In some cases I inay prefer an ordinary spoon without a rubber surface.
In order to describe the nature of my said invention and the manner of performing
the same, have caused to be annexed to this specification a sheet of drawings
illustrative of the application of my invention to velocipedes.
With respect to the beforementioned sheet of Drawings and the figures and letters
of reference thereon indicated,
Fig. 1, is a front elevation of the brake, as fitted to an ordinary front wheel of a
safety.
Fig. 2, is a side elevation of brake.
Fig. 3, is a plan of the brake spoon.
Figs. 4 & 5, are two views of the crank, fig. 4 shewing the method of connecting
It will be obvious that the crank can
same to an ordinary sun & planet geared axle.
be readily applied to ungeared as well as geared machines.
In Figs. 1, 2, 3, a. represents the handle bar, c. is a lug carried by the upright
tube. This lug forms the fulcrum, upon which the lever, b, turns. d, e, are joints, to
the latter of which the tension rod f. is secured. A ball joint may preferably be used
instead of the joints. Spoon h. i. swivels or turns upon centre 9. which is supported,
from the lug on front tube.
I'
It will be obvious that an upward pull of the lever b. against the spring 9. will raise
the tension rod, and force the end h. of the spoon against the rubber of the wheel.
In figs. 4, 5, represents the crank axle, e¹ the short arm, a' is the connecting rod
end free to turn on the connecting stud or piece, which connects the actual pedal
crank, with the short arm e¹.
By this device or arrangement a pair of short arms can be used in combination
with a connecting rod, and any suitable throw of pedals may be obtained.
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
Firstly. In all velocipedes the combination of the lever b. with the rod f. arranged
in such manner that an upward pull of the hand lever raises the rod and actuates the
brake spoon, as and for the purposes herein before substantially described and
illustrated.
Secondly. In all driving gears or motions of velocipedes the device, arrangement,
or crank which allows of a free space for a connecting rod, a', to turn and transmit
power to another similar throw (short arm) to that upon which the rod turns as and
for the purposes substantially described and illustrated.
Dated this the 28th day of April 1890
A T - . דז'מ
WALTER CHATWOOD BURTON.