Improvements in or Connected with Single Central Driving Tricycles and in a Method of Specially Fitting the Back Wheels, i.e., out of the Axial Line of each other.
Year: 1886

page_text: Date of Application, 17th Dec., 1886
Complete Left, 19th Sept., 1887.
Complete Accepted, 21st Oct.. 1887,
Improvements
in or
Connected with Single Central Driving
Tricycles and in a Method of Specially Fitting the Back
Wheels, i.e., out of the Axial Line of each other.
I JOHN FOBREST WALTERS of 47 Queens Road, Bayswater, Middlesex, Bicycle
Manufacturer, do hereby declare the nature of my said invention to be as follows:-
The object of this invention is
1 To arrange the transverse back bone or frame of a single central gear driving
tricycle, with a double or forked bearing for carrying the inner end of the larger
hind (driving) wheel to obtain great firmness and rigidity at that part.
2 To making the centre stay or main backbone of a single central gear tricycle-
straight or curved from the socket of the front steering wheel to the Tor junction of
the main and the transverse stays, according to whether the tricycle is constructed for
Gentleman's or Lady's use.
3 To make the Transverse stay of a single central gear tricycle in two distinct
pieces and to set one behind the other but to the same T or other connection so that
the two hind wheels are not in the same axial line.
4 To make the transverse stay of a single central gear tricycle in one piece with
the end which carries the small hind wheel set to the rear of the axial line of the large
hind or driving wheel so that the weight of the rider is thrown principally upon the
drive wheel which thereby gets a good grip on the ground and produces great
steadiness while running, the particular arrangement of the 3 wheels being such that
the vibration is considerably absorbed skidding is much reduced and in most cases
entirely prevented. The tendency of the vehicle is' to run straight and not crab
fashion as with ordinary single gear tricycles.
With my invention I prefer to have the three wheels of different diameters, the
largest being the driver and the smallest the trailing wheel the intermediate size wheel
being the steerer in front and with its axle rod set at an angle so that its upper part.
leans back with the handles towards the rider.
Dated this 17th day of Dacamber 1886
H. GARDNER,
166, Fleet Street, London,
Agent for the said J. F. Walters.

page_text: COMPLETE SPECIFICATION.
Improvements in or Connected with Single Central Driving
Tricycles and in a Method of Specially Fitting the Back
Wheels, i.e., out of the Axial Line of each other.
I JOHN FORREST WALTERS of 47 Queens Road, Bayswater Middlesex, Bicycle
Manufacturer do hereby declare the nature of my said invention and in what manner
the same is to be performed to be particularly described and ascertained in and by the
following statement:-
For the purpose of my invention I construct or arrange the transverse back bone
or frame A of a single central-gear driving tricycle, see the annexed drawings
Figures 1, 2 and 3 with a double or forked bearing B for carrying the inner end C of
the axle D of the larger hind (driving) wheel E to obtain great firmness and rigidity
at that part.
To make the centre stay or main back bone F of a single central-gear tricycle
straight, see Figures 1 and 4 or curved see Figure 2 from the socket G of the front
steering wheel H to the T or junction I of the main stay F and the transverse stay A
according to whether the tricycle is constructed for Gentlemen or Lady's use.
I make the transverse stay A, J, of a single central gear tricycle in two distinct
pieces and set one behind the other but to the same T or other connection so that the
two hind wheels E, K, are not in the same axial line.
I make the transverse stay A of a single central gear tricycle in one piece with the
end which carries the small hind wheel K set to the rear of the axial line of the large
hind or driving wheel E so that the weight of the rider is thrown principally upon
the drive wheel E which thereby gets a good grip on the ground, and produces great
steadiness while running.
By this invention the wheels E, H, K, are so arranged that vibration is considerably
absorbed, skidding is much reduced and in most cases entirely prevented. The
tendency of the vehicle is to run straight and not crab fashion as with ordinary single
gear tricycles.
The three wheels E, H, K, are preferably of different diameters as shown on the
drawing the largest E being the driver and the smallest K the trailing wheel, the
intermediate size wheel H being the steerer in front and with its axle rod L set at an
angle so that its upper part leans back with the handles M towards the rider.
The driving gear N, P, Q, is arranged as shown at Figure 4 and receives motion
from podals R and cranks S the large chain or sprocket wheel N being carried by the
arm T depending from the socket I and forming part of the seat support U but the
seat support U may be a separate rod or bar.
Figure 4 shows a single central gear tricycle for gentlemens riding but for ladies
I prefer to bond the main backbone F to enable a female to readily find a seat on the
machine or instead of curving the backbone F a continuation of the bar T up to the
fork G will answer the same purpose.

page_text: V is a straining rod to keep the gearing taut, this is effected by simply turning the
nuts to bring the bar T nearer the socket G.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what
claim is
1. The improved single central gear driving tricycle substantially as shown on the
annexed drawings the several parts being arranged in the manner and for the purposes
hereinbefore described.
2. The double ended transverse back frame A, J, one end having the trailing
wheel K attached and the other end encircling the outer end of the main axle D as a
support thereto, said axle D being in advance of the axial line of the trailing wheel K
as described.
3. The forked bearing B for journalling the main driving axle D and acting as part
of the junction I by which sprocket wheel P the transverse bar A, J, and the main
bar F whether straight as in Figure 4 or curved as in Figure 2 and the bar U T
are carried as shown and as described.