Improvements in and relating to the Under Gear of Rolling Stock:
Year: 1896

page_text: Date of Application, 3rd Dec., 1896-Accepted, 6th Feb., 1897
COMPLETE SPECIFICATION.
Improvements in and relating to the Under Gear of Rolling Stock:
I, PETER ELLIS, of 71 Cathedral Square, Christchurch, in the Provincial
District of Canterbury, in the Colony of New Zealand, Mechanical Engineer, do
hereby declare the nature of my 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 the under gear of rolling stock and provides improve-.
ments therein consisting of a "bogie" truck in which only two wheels are
employed upon a single axle the weight of the vehicle being supported in swing
link haugers which depend from an axle box in which the axle is journalled at.
each end, the vehicle being pivoted to the bogie directly over the centre of such
axle.
The axle box is tubular, an oil chamber being thereby formed; and the bottom
is made to slope from the middle towards both ends so that oil will flow down into.
oil pans beneath bearing brasses fitted therein.
Two bogies are employed beneath each vehicle the frame of one bogie being
connected to the frame of the other by crossed connecting rods each side of one-
bogie being connected to the opposite side of the other.
A drawbar is made integral with or rigidly attached to the frame of each bogie
by means of which it may be steered by a similar drawbar upon the motor or
vehicle immediately preceding it, the angularity given to the wheels of one bogie
in relation to the track; being transmitted by the cross connecting rods to the
other bogie in the opposite direction, flange friction and wear and tear of wheels in.
passing round short curves being thereby greatly diminished.
In the accompanying drawings.
Fig. 1 is a side elevation, and
Fig. 2 a plan showing the front and rear bogies of a vehicle coupled by cross.
connecting rods.
Fig. 3 is an end elevation, and
Fig. 4 a plan showing a method of fixing and staying the bolster beams to the
bogie frame.
Fig. 5 an end elevation partly in vertical central section.
Fig. 6 a transverse section on line 6-6 Fig. 5, and
Fig. 7 a transverse section on line 7-7 Fig. 5.
Similar letters of reference indicate the same parts in all the figures.
The axle box (a) surrounds the axle (6) which has a wheel fixed upon either end
the box extending longitudinally from wheel to wheel and being provided with
bearings (c) in which the axle is journalled.
A swing link hanger (d) is depended from each end the axle box (a) a swing
hanger pivot (e) lying in a recess formed for its reception across the top of the
axle box engaging in eyes formed in the top of the arms of the swing link hanger
upon each side of the axle box.
The bolster beams (f) are secured to the bogie frame (h) by bolts (i) and by
stays (k) the bogie centre plate (1) distributing the weight between the bolsters at
the middle of

page_text: The bolsters are arranged one upon either side of the axle box and rest upon
bearing pivots (m) passing over the plate (n) supported by springs (o) carried
within the swing link hangers.
The axle box is preferably in the shape of an inverted U, fitted with an oil
pan (u) at the bottom which is arranged to slope towards the outer ends of the axle
and feeders (p) are provided, through which oil may be passed into the axle box
to lubricate the journals.
A slotted drawbar (r) is made integral with each bogie frame by means of
which it may be steered and connecting rods (t) connect the inside corners of
one bogie frame to the respective opposite corners of the other frame so that
angular movement of one bogie is transmitted to the other in the opposite
direction.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is :-
1. A bogie truck having two wheels upon a single axle the weight of the vehicle'
being supported in swing link hangers depending from an axle box which extends
from wheel to wheel longitudinally with the axle, the vehicle being pivoted to the
bogie directly over the centre of the axle substantially as and for the purposes
herein described and illustrated.
2. The combination with a two wheeled bogie truck to which the vehicle is
pivoted directly over the centre of the axle a bogie steered by a drawbar made
integral therewith and crossed connecting rods, connecting such frame with the
frame of a similar bogie at the opposite end of the vehicle substantially as and for
the purposes herein described and illustrated.
Dated this 6th day of October 1896.
BREWER & SON,
London and Leeds, Agents for the Applicant.