Improved Means for Preventing the Overturning of Road Vehicles.
Year: 1890

page_text: Date of Application, 20th Feb., 1890
Complete Specification Left, 13th Oct., 1890-Accepted, 6th Dec., 1890
PROVISIONAL SPECIFICATION.
Improved Means for Preventing the Overturning of Road Vehicles.
I, WILLIAM JOSEPH PIERCE of 67 Spey Street Bromley by Bow, Carriage Builder
do hereby declare the nature of this invention to be as follows:-
The object of my invention is to prevent the overturning of vehicles in the event
of a wheel coming off. For the purpose of my invention 1 form a rod of any suitable
material and in any required length, and thickness; to the upper end of this piece of
may be
metal I form flaps or flanges, for the purpose of affixing it to the axle and which
either perpendicular, or at any angle suitable, to the axle shaft. The lower end of the
metal rod is formed in the shape of a fork in which is fitted a spindle on which spindle
is hung a wheel of any suitable material and diameter. The rim of the wheel may
be covered with a band of rubber to deaden the shock. The wheel or roller is kept
any required distance off the ground. A stay preferably of metal and of any suitable
width and thickness or diameter is fixed on to the lower end of the bar, the other end
of which is attached to the axle. The use of this bar is to furnish a further means of
preventing the main bar from moving. I attach another bar to the main one on which
the roller is, of any suitable width and thickness or diameter the other end of which
is attached to the spring of the vehicle. The use of this rod is to prove a means of
extra strength to the roller in getting over obstacles. To allow for deflections of the
spring, I add a hinged joint in the rod.
Dated this 20th day of February 1890
GRAHAM & GRAHAM,
Agents for Applicant.
COMPLETE SPECIFICATION.
Improved Means for Preventing the Overturning of Road Vehicles.
I, WILLIAM JOSEPH PIERCE residing at 8 Ailsa Street, in the Parish of Poplar,
London, East, 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 has for its object to provide means whereby, in the event of the
breakage of the wheel axle, or a wheel coming off, the vehicle to which my improved
device may be adapted, shall be prevented from overturning.
Referring to the accompanying sheet of drawings,
Figure represents an end view of a portion of a wheeled vehicle showing my
improved device adapted to the axle thereof, and
Figure 2 is a side view of same.
In carrying out my invention I employ a rod or bar A of wronght or malleable iron
or steel or other suitable metal or material, upon the upper end of which is or are
formed a flange or flanges e, by means of which latter the rod or bar A may be secured
to the axle B of the vehicle. The flanges e may be formed at right angles relative to
the bar A so as to allow of the latter being suspended vertically, or they may be so
disposed as to permit of said bar assuming a position at a suitable angle as shown in.
Figure 1. Said flanges e, which are preferably of corresponding width to that of the
axle, are secured thereto by clamps, clip-staples and couplings a or equivalent
means.
The lower end of the rod or bar A terminates in a curved fork f, within the tines
of which is mounted upon a spindle, a small wheel or roller C of metal or other
material, and of convenient diameter and width. Said roller may, if desired, be
grooved in its periphery and have adapted thereto a tyre of caoutchouc or other

page_text: resilient material so as to lessen the shock imparted to the device on the roller C
coming into sudden contact with the ground.
To the rod or bar A, which preferably tapers from the top towards the fork f, and
is of such length as to hold the roller C a few inches from the ground, is secured by
means of a clamp 6 a rigid metal stay rod D Figure 1, of suitable length and
diameter, the other end of which is attached by a similar clamp c to the axle B of the
vehicle. The object of this stay D is to impart increased strength to the rod or
bar A and prevent lateral strain. A second stay rod E is secured, one end to the
clamp 6 and the other end to the front hinge d of the spring F, or, if desired, said
stay rod E may be secured to the body of the vehicle as shown by the dotted lines
at g Figure 2. Said stay rod E is devised with the object of strengthening and
preventing damage, by straining, to the rod or bar A, and in order to allow for the
compression and expansion of the springs F, I joint the stay rod E as shown at h.
From the foregoing it will be seen that, by the adaptation of my improved device
to road vehicles, all risk of the overturning thereof, by the coming off of a wheel, will
be effectually prevented.
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 :
:
First The improved device for preventing the overturning of road vehicles
substantially as herein described and shown in the accompanying drawings.
Second-In an appliance for preventing the overturning of road vehicles, the
combination with a flanged forked bar carrying a small wheel or roller of two stays
substantially as and for the purposes set forth.
Third The mode of and means employed for securing the bar to the axle of a
road vehicle substantially as set forth.
Dated this 13th day of October 1890.
GRAHAM & GRAHAM,
Agents for Applicant.