Improvements in Velocipedes.
Year: 1892

page_text: Date of Application, 13th Apr., 1892
Complete Specification Left, 13th Oct., 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Velocipedes.
I, WILLIAM HENRY RAYWOOD KELLY, of 1 Bow Churchyard, in the City of
London, Traveller, do hereby declare the nature of this invention to be as
follows:-
My invention relates to an improved tricycle adapted to run on a narrow
track.
According to my invention I provide a frame (somewhat similar to the frame of
a safety bicycle) carried at the rear upon a wheel rotating on a fixed axis and
serving as the driving wheel. The wheels carrying the front of the frame are the
steering wheels the fork standards of which advantageously work independently in
the head or in or upon an attachment thereto. Or the front wheels may be mounted
in a double fork having a single standard.
As a tricycle having a narrow base is very readily overturned when turning a.
corner I provide for automatically transferring the centre of gravity of the machine
and rider, to the required side of the machine. This I sometimes accomplish by,
inclining the head attached to or containing the wheel standard or standards from the
base forwardly of a vertical line, so that when the standard or standards is or are
moved the frame will be tilted in the required manner to shift the centre of gravity.
I may arrange springs in connection with the standard or standards for the
purpose of maintaining all the wheels of the machine in contact with the ground
when the frame is tilted in rounding a corner.
The head of the frame is advantageously made adjustable so that its angle of.
inclination can be varied. By this means I am enabled by removing the pair of
steering wheels and their attachments and substituting therefor a single wheel to
convert my machine into a bicycle.
Dated this 13th day of April 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Velocipedes.
I, WILLIAM HENRY RAYWOOD KELLY, of 1, Bow Churchyard, in the City of
London, Traveller, 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 an improved tricycle adapted to run on a narrow
track.
According to my invention I provide a frame (somewhat similar to the frame of a
safety bicycle) carried at the rear upon a wheel rotating on a fixed axis and serving
as the driving wheel. The wheels carrying the front of the frane are the steering
wheels and are advantageously mounted in two forks connected by a crop piece to
a single standard or shaft and comparatively near together. Or the front wheels
may be provided with forks working upwards or downwards independently in the
bearing or bearings.
As a tricycle having a narrow base is very readily overturned when rounding &
corner I provide against this by causing the centre of gravity to be automatically
5 shifted towards the wheel on the inside of the curve. This I accomplish by

page_text: inclining the head attached to or containing the wheel standard or standards from
the base forwardly of a vertical line, so that when the standard or standards is or
are moved the frame will be tilted in the required manner to shift the centre of
gravity. I may arrange springs in connection with the standard or standards for
the purpose of lessening vibration.
..
The head of the frame is advantageously made adjustable so that its angle of
inclination can be varied and by removing the pair of steering wheels and their
attachments and substituting therefor a single wheel I can convert my machine into
a bicycle.
To enable my invention to be fully understood I will describe the same by refer- 1
ence to the accompanying drawings, in which
:-
Figure 1 is a side elevation of a tricycle constructed according to my invention':
Figure 2 is a front elevation of the same; and,
Figure 3 is a perspective view:
Figure 4 illustrates a modification.
"
Similar letters of reference indicate corresponding parts in the several figures.
"
a is the frame of the machine, and 6 the rear or driving wheel to which motion
is imparted from the pedal-shaft c. The said frame is as herein before-stated
somewhat similar to the frame of a safety bicycle, and is provided with a socket d
for carrying the steering rod e.
2
ff are the front wheels carried in the forks g, g, which forks, as shewn in
Figures 1 and 2, are permanently attached to a bar h having a standard i. j is the
head or socket in which the said standard i works, the said head at its lower end.
being pivotted at k in; lugs, l'upon short arms projecting from the front of the
frame whilst the upper end moves in a slotted guide m also projecting from 2
the front of the frame and by which means the said head ; may be placed 'at-any
desired inclination. n is a screw held against longitudinal movement in the guide m
and engaging with a spherical put o in the upper end of the socket j in such a
manner that when the screw n is rotated in one or the other direction the inclination
of the head will be varied. I do not, however, bind myself to this method of 3
fixing the inclination of the socket. p is a spring placed around the standardi and
between the bar h and the socket j, the said spring serving to reduce-vibration'in a
well known manner when travelling.
q
The movements of the steering bar e are transmitted to the front wheels as
follows, that is to say, the lower end of the bar e is provided with an extension 3
carrying a pin engaging with a slotted bar s secured to the wheel standard i.
With this arrangement it will be understood that when the steering rod e is
turned, say to the right,. a corresponding movement will be imparted to the
wheel standard i and as 'the said wheel standard works in the inclined head or
socket j and the position of this inclined head remains in a constant augular 4
position to a vertical line it follows that this movement of the head to one
side will cause the corresponding canting of the frame a. It is obvious that
by varying the angle of the head j by the screw n the extent to which this
canting may take place will be correspondingly varied.
Assume now, that a rider is turning a corner sharply to the right at a con-
siderable speed, the natural tendency is for the rider to be thrown off upon
the left side of the machine by the centrifugal action; owing, however, to the
inclination of the frame which takes place when the steering handles are moved
to effect the turning to the right this centrifugal action is counteracted.
In Figure 4 of the drawings I have shewn the arrangement wherein the 5
wheel-forks instead of being permanently attached to the bar are provided
with separate standards g', 9 adapted to slide in sockets, in the said bar
and I have shewn the said standards as being connected with each other by
means of a chain passing under pulleys u, u, this arrangement of chain and
pulleys having for its object to allow either of the wheels to field to any inequality 5
in the ground without throwing the machine to one side or the other.
of a chain or wire I may use a slotted bar working on a pivot.
Instead

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 :-
1. A tricycle the standard of the steering wheels of which is carried in 'a
head mounted at an angle to a vertical line and connected to the steering-
handle 'in such a manner that the act of steering causes the head to move so
as to cant or incline the frame of the machine, substantially as, and for the
purpose, described.
2. In a tricycle having the head inclined in the manner referred to in the
preceding claiming clause, arranging the said head so that the inclination
thereof can be varied, substantially as, and for the purpose, described.
3. A tricycle adapted to be converted into a bicycle by removing the two
front wheels and their standards, and fixing the standard of a single wheel in
the steering head or socket, substantially as described.
4. The manufacture and use of the improved tricycle hereinbefore described and
illustrated in the accompanying drawings.
Dated the 13th day of October 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.