Improvements in the Construction of Trucks, Bogies, and other Vehicles.
Year: 1889

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Trucks, Bogies, and other
Vehicles.
I TOM VIDEAN BOND, of 16 Plains of Waterloo, King Street, Ramsgate in the
county of Kent, 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 :-
This invention relates to certain improvements in the construction of trucks bogies
lorries and the like and is applicable also to the under carriages of wagons and other
vehicles. The object of the said improvements is to provide a simple and strong
turning device or "Lock" by which vehicles can be taken round sharp angles or
otherwise manoeuvred with ease and safety.
According to my invention I connect together the axle trees of two pairs of wheels
from opposite sides of the centre line of travel by means of rigid independent coupling
rods, and I pivot the platform or frame carrying or constituting the upper carriage to
each axle tree at its mid-length.
The accompanying drawings illustrate the invention as applied to a simple " stone
truck"
or lorrie. Figure 1 is a plan the upper carriage being shown dotted and
axle trees parallel: Figure 2 is a sectional plan of the same but showing change of
position of parts when going round a curve: Figure 3 is a longitudinal section, and
Figure 4 is a sectional elevation on line y z of figure 1. Similar letters denote
similar parts in all of these figures and the broken line xx represents the centre line
of travel of the truck.
AA are a pair of axle trees upon the axle arms of which the wheels W W are
secured in the ordinary manner: CC are a pair of rigid independent coupling rods
each connected at c c to the axle trees A A at opposite sides of the centre line xx and
at any required distances therefrom but preferably at the ends as illustrated.
The connections cc may be ordinary pivotted or hinged joints and they may be
disposed as illustrated in figures 3 and 4 in such a manner that the rods CC pass
under and over each other; or they may be in the same horizontal plane and the
B is a simple
rods CC joggled or slotted past each other in any convenient manner.
platform, or it may be a frame carrying or constituting the upper carriage: It is
connected to each axle tree AA by a rotary connection such as illustrated at b b
so that the said axle trees can turn freely about the connection. The points of
connection b b are at the mid length of the axle trees, and are lineable transversely
with the centre points of the rods CC.
A pair of horse-shafts or hand attachments such as P is or are fitted and the power
may be applied at either end required of the truck with the same effect.
By the above construction the vehicle can be manoeuvred into any position and
brought round sharp curves with ease and accuracy, also, even when the axle trees are
disposed at the end of the "lock" as in figure 2, the truck cannot tip over since there
is the same support to the platform B at all positions of the axle trees.
The invention is specially applicable where heavy weights have to be dealt with
since the construction admits of the platform being very low down and near the
ground, and by changing the coupling rods the length of truck may be varied as
required..
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 I claim is :-
1

page_text: consisting in coupling together by rigid independent rods opposite ends of adjoining
axle trees and pivotting the upper carriage to the said axle trees substantially as and
for the purposes setforth.
Dated this 10th day of July 1889
J. C. CHAPMAN, Fel. Inst. Patent Agents,
70, Chancery Lane, London, W.C., Agent for Applicant.