Improvements in the Construction of Bogie Bolsters for Railway Vehicles.
Year: 1896

page_text: Date of Application, 2nd Mar., 1896
Complete Specification Left, 2nd Dec., 1896--Accepted, 23rd Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Bogie Bolsters for
Railway Vehicles.
I, JOHN ATKINS ADEY of Ashton Old Road, Openshaw in the County of
Lancaster, Manager, do hereby declare the nature of my invention to be as
follows:-
My invention consists in constructing the bolster in two separate and distinct
parts, preferably of pressed steel and of a channel cross section, one part being placed
inside the other with space between the two.
To the outer part is attached the central bearing and the side friction blocks or
rests.
The inner part rests upon and is supported by the usual springs which are carried
by the swing beam, the weight of the carriage body being communicated from the
outer part of bolster to the inner part, and thence to the springs on the swing beam ;
through the medium of a transverse carrier pin which is carried by one or more.
springs or their equivalent which is normally under compression, and fixed to the
lower part and in the centre of the inner part of bolster.
The compression is calculated to be equal to the weight of the unloaded carriage.
body.
Between the two parts which form the bolster at each end springs are inserted
and are so arranged that acting in conjunction with the centre carrier pin and its.
springs, all shocks and vibrations from whatever cause are absorbed, and are not
transmitted to the occupants of the carriage.
Dated the 29th day of February 1896.
D
DFDU
RODT. F. DRURY, G.P.A..
Applicant's Agent.
Improvements in the Construction of Bogle Bolsters for
Railway Vehicles.
I JOHN ATKINS ADEY of Ashton Old Road, Openshaw in the County of Lancaster
Manager do hereby declare the nature of this invention and in what manner the same
has to be performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to improvements in the construction of railway bogie--
bolsters, with the object of reducing the effect of concussions, sudden swerves and
like shocks, and it consists chiefly in making the bolster in two separate parts,
preferably of plate steel pressed to a channel shaped cross section, one shell placed.
over the other with a free working space between them, to allow of a rocking action-
of the outer shell.
I havo illustrated the construction of a bolster as applied to an Adler's bogie,.
with rubber springs in the annexed sheets of drawings.
Fig. 1, is a side elevation of the bogie-bolster.
Fig. 2, a central vertical cross section of same.

page_text: Fig. 4, top plate for centre spring, and end view.
Fig. 5, lower plate for centre spring, and end view.
Fig. 6. plate for carrying end spring, and section.
Figs. 7 & S, sections of the rubber springs.
Similar letters refer to similar parts in any of the figures in which they may
occur.
The outer part or shell is marked A, and the inner part B, and it will be
understood that A, is free to rock upon the fixed part B.
The outer shell is provided on its top surface with a central bearing C, and side
rests or friction blocks D, upon which the body of the vehicle bears.
The inner part 1, is supported in position at each end by springs of suitable
construction which are carried by the swing beam E, but as these form no part of
my invention they are omitted to avoid unnecessary complication.
The weight of the carriage body is communicated from the outer shell A, to the
inner part B, and thence to the supporting springs carried by the swing beam E,
through the medium of a transversely situated carrier pin P, upon which the shell A,
rests and which has a vertical movement in the elongated openings O, in the sides
of both paris A & B, and rests upon one (or more) springs S', normally under
compression.
This is shown in the drawing as a rubber spring S', resting upon a support F,
within the lower walls of the part B
The amount of normal compression is calculated to be equal to the weight of half
the unloaded carriage body.
At each end of the part B, between its upper face and the top of the shell A,
springs are inserted, and they are so arranged that acting in conjunction with the
centre carrier pin I', and its resilient support. S', any concussion or vibration,
or sudden swerve is absorbed and not transmitted to the carriage body and
passengers.
The bogie soles G, and eross bars H, are shown in the drawing to indicate their
relative position to the bolster.
The construction of the top spring plate F, for the spring S', is shown in Fig. 4,
and that of the lower plate 1, and its support in Fig. 5.
The end spring plates K, for springs S, are shown in Fig. 6, and cross sections of
the rubber springs in Figs. 7 and S.
I wish it to be understood that although I have shown a holster fitted with rubber
springs I may substitute coiled steel or other springs if preferred, and that I may
modify the details of construction for such and other purposes without departing
from my invention.
Having now particularly described and ascertained the nature of my inven
tion, and in what manner the same is to be performed I declare that what I
claim, is :-
1. A railway bogie-bolster consisting of two independent chief parts, the outer
self adjusting shell fitting over and enclosing the inner part, (with free working
space between them) and resting upon a central transverse axis supported by the
inner part, as hereinbefore described and set forth.
2. A self adjusting bogie-bolster, consisting of an outer shell A, upon which the
Lase of the vehicle rests, and an inner shelf B, (carried by the swing bars E, or
equivalents,) and supporting the outer shell upon a transversely placed axis Presting
upon a resilient support S, or its equivalent, with interposed springs at each end
botween the two shells as hereinbefore described and shown in the drawings.
Dated the 30th day of November 1896.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.