Improvements in Four Wheeled Road Vehicles.
Year: 1892

page_text: Date of Application, 27th Dec., 1892
Complete Specification Left, 23rd June, 1893-Accepted, 5th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Four Wheeled Road Vehicles.
I, EDMUND EDWARDS, of 35, Southampton Buildings, Chancery Lane,
London, in the County of Middlesex, Engineer, do hereby declare the nature of
this invention for "IMPROVEMENTS IN FOUR WHEELED ROAD VEHICLES
be as follows:-
"
to
This invention relates to improvements in four wheeled road vehicles, and has
for its objects to enable such vehicles to be turned more readily and easily than
heretofore, also in a smaller space, and with greater safety.
Figure 1, is a plan of the under carriage of a four wheeled vehicle with the
improvements attached.
Figure 2, is a side view of the same.
Similar letters refer to similar parts in both the figures.
a a a a, is the frame of the body of the vehicle.
bb, are the axles which can be either plain or attached, to the axle beds in the
usual manner.
cc, are the front wheels with ordinary fore carriage fitted with the usual turning
circle c' with downright pin c.
dd, are the hind wheels revolving on axle 6 and turning on a downright pin d
and a turning circle d' which is by preference made larger than the front turning
circle.
e e, are rods or bars hinged at either end to the axle or axle beds bb at ee in
any convenient position but crossing one another diagonally as shewn.
It will be seen from this description of the several parts and by reference to the
drawing that the improvements consist in fitting both the front and hind axles on
to central pivots thus causing both sets of wheels to lock and connecting the said
axles together by diagonal tie rods e freely moving in joints e¹ e' by which means in
the act of turning the vehicle the axles simultaneously move radially and equally
thus causing the two wheels on each side to follow a like curve in turning with a
less deviation of the axles than in the ordinary method now in use, and in this
manner the vehicle can be turned with greater safety and facility.
In timber carriages and vehicles requiring variation in length the diagonal rods
can be made in two pieces and either joined telescopically or the two parts fastened
together with bolts or in any ordinary manner.
Dated this 27th day of December 1892.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Four Wheeled Road Vehicles.
A communication to me from JOSEPH MOREWOOD DOWSETT, of Stoney Creek,
Palmerston North, in the Colony of New Zealand, Gentleman.
I, EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex, 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, that is to say :-
This invention relates to improvements in four-wheeled road vehicles and has for

page_text: its objects a novel method of construction by which such vehicles can be turned
more readily and easily than heretofore, and in a smaller space, and with greater
safety.
In the drawing filed with my Provisional Specification,
Figure 1 is a plan, of the, under carriage of a four wheeled vehicle with the
improvements attached.
Figure 2 is a side view of the same.
Similar letters refer to similar parts in both the figures.
a, a, a, a, is the frame of the body of the vehicle.
b, b, are the axles which may either be plain or attached to the axle beds in
the usual manner.
c, c, are the front wheels having an ordinary fore-carriage fitted with the usual
turning circle c¹ with a downright pin c².
d, d, are the hind wheels revolving on the axle band turning on a downright
pin d' and having a turning circle d which is (by preference) made larger than the
front turning circle c¹.
e, e are rods or bars hinged at either end to the axle or axle beds bb at e¹ e¹, in
any convenient position but crossing one another diagonally as shewn. Or, only
one such rod may be used.
It will be seen from this description of the several parts and by reference to the
drawings, that the improvements which form the subject of the invention consist in
fitting both the front and hind axles upon central pivots, thus causing both sets of
wheels to lock, and connecting the said axles together by diagonal tie rod or rods e
freely moving in joints el e' by which means in the act of turning the vehicle the
axles simultaneously move radially and equally thus causing the two wheels on
each side to follow a like curve in turning, with a less deviation of the axles than
in the ordinary method now in use, and in this manner the vehicle can be turned
with greater safety and facility.
In timber carriages and vehicles requiring variation in length the diagonal rods
can be made in two pieces and either joined telescopically or the two parts fastened
together with bolts, or in any equivalent ordinary manner.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In a four-wheeled road vehicle the combination of axles b, moving on, pivots,
with diagonal rod or rods e, substantially as and for the purposes described herein
and illustrated in the drawing.
Dated this 24th day of June 1893.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.