Improvements in Driving Gear for Spring Vehicles.
Year: 1893

page_text: Date of Application, 19th Oct., 1893
Complete Specification Left, 17th July, 1894-Accepted, 13th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Driving Gear for Spring Vehicles.
I, HENRY PERCY HOLT, of No. 10 St. Bride Street, in the City of London,.
Engineer, do hereby declare the nature of this invention to be as follows:-
When a spring vehicle is driven by gearing from a motor, it is usually necessary
to communicate rotation to the wheels through belts or chains in order to allow
for the vertical oscillation of the body of the vehicle on its springs. My invention
relates to means of communicating motion through toothed, friction or other close
gearing which I effect in the following manner. I drive by means of tooth, friction
or other close gear a sleeve mounted in bearings on the body of the vehicle; this
sleeve encircles the axle of the vehicle but is so much greater in internal diameter
as to allow the up and down play resulting from spring movement. To one end of
the sleeve I attach one end of a tube surrounding the axle, the other end of which
tube is attached to the wheel of the vehicle or to a boss on the axle at some
distance from the sleeve, the attachment in both cases being of a free kind allowing
up and down play to the tube relatively to the axle.
The tube may be more or less open along its side or sides, and it may take a
helical form so as to operate as a spring circumferentially.
Dated this 19th day of October 1893.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE
SPECIFICATION.
Improvements in Driving Gear for Spring Vehicles.
I, HENRY PERCY HOLT, of No. 10 St. Bride Street, in the City of London,
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:-
When a spring vehicle is driven by gearing from a motor, it is usually necessary
to communicate rotation to the wheels through belts or chains in order to allow for
the vertical oscillation of the body of the vehicle on its springs.
My invention relates to means of communicating motion through toothed, friction
or other close gearing, which I effect as I shall describe referring to the accom-
panying drawing which is a transverse section of a vehicle with driving gear
according to my invention. I drive by means of tooth gear A or it might be
friction or other close gear, a sleeve B mounted in bearings C on the framing D of
the vehicle; this sleeve encircles the axle E but is so much greater in internal
diameter as to allow the up and down play resulting from movement of the vehicle
on the springs. To one end of the sleeve B I attach one end of a helical spring H
which also surrounds the axle. The other end of this spring is attached to the
wheel W of the vehicle or it might be to a boss on the axle E at some distance
from the end of the sleeve B, the attachment in both cases being of a free kind as
a joint allowing up and down play to the spring relatively to the axle. Instead of
the spring H, a tube freely jointed to the sleeve and to the wheel or collar might
be employed, but I prefer the spring as yielding more freely to oscillations and
driving the wheel more elastically.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
Driving gear for a spring vehicle consisting of a sleeve surrounding the axle of
the vehicle with freedom within it for all vertical oscillation, the said sleeve being
driven by any suitable close gear and being connected through a helical spring or
tube freely jointed to it and to a wheel of the vehicle or a collar on the axle,
substantially as described.
Dated this 17th day of Jul 1904
ABEL & IMRAY,
Agents for the Applicant.