IMPROVEMENTS IN INDIA RUBBER ASSISTANT BEARING SPRINGS FOR RAILWAY AND TRAMWAY ROLLING STOCK to be as follows:
Year: 1884

page_text: I GEORGE SPENCER of N° 77 Cannon Street, in the City of London, Civil
Engineer, do hereby declare the nature of said invention for "IMPROVEMENTS IN
INDIA RUBBER ASSISTANT BEARING SPRINGS FOR RAILWAY AND TRAMWAY ROLLING
STOCK to be as follows:-
"
This invention has reference to india rubber assistant bearing springs to be used
between the body frames and under frames of railway and tramway vehicles.:
In the specification of a former patent granted to me under date the 18th day
of July 1883, N° 3535 are described india rubber assistant bearing springs with
transverse channels,-and in the provisional specification of an application for
Letters Patent dated 18 January 1884, N° 1724, made by me in conjunction with
Alexander Spencer are described india rubber assistant bearing springs having
channels or passages arranged longitudinally therein, with or without transverse
channels or passages.
Now my present invention relates to special constructions of india rubber
assistant bearing springs made with transverse holes passages or channels, or
both, as illustrated by the accompanying sheet of drawings.
Fig 1 represents in longitudinal vertical section an india rubber assistant
bearing spring according to my invention formed with transverse holes or
passages A through the body B of the spring-these holes are arranged with
their axes in a common. horizontal plane. In the modification represented in
Fig 2, there are upper and lower transverse holes or passages A so arranged. that
a longitudinal line passing through the axes of all the holes or passages will take
a zig zag direction. In the arrangement illustrated in Fig 3 the transverse holes
or passages are arranged with their axes in three parallel horizontal planes, each
hole in the top row having its axis in the same vertical plane with that of a hole
in the bottom row, and the holes in the intermediate row having their axes in
vertical planes between those in which the other axes are situated.
Fig 4 shews a modification of spring made with a single row of holes A having
their axes in a common horizontal plane, and with transverse channels C of semi-
circular cross section in the top and bottom surface of the spring, one upper and
one lower transverse channel arranged with their axes in a common vertical plane
being provided between every two of the transverse holes A formed through the
body of the spring.

page_text: In Fig 5 is shewn a spring having semi-circular transverse channels C at its top
and bottom surfaces, the top channels having their axes in vertical planes between
those wherein the axes of the bottom channels are situated.
As is obvious the form in cross section of the transverse passages or channels
may be variously modified to suit the requirements of particular applications and
according as the springs are desired to be more or less sensitive.
Dated this 22nd day of January 1884.
I, GEORGE SPENCER, of N° 77 Cannon Street, in the City of London, Civil
Engineer, do hereby declare the nature of my invention for "IMPROVEMENTS IN
INDIA-RUBBER ASSISTANT BEARING SPRINGS FOR RAILWAY AND TRAMWAY ROLLING
STOCK " and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
This invention has reference to india-rubber assistant bearing springs to be used
I between the body frames and under frames of railway and tramway vehicles.
In the specification of a former patent granted to me under date the 18th day
of July 1883, N° 3535, are described india-rubber assistant bearing springs with
transverse channels and in the specification of an application for Letters Patent
dated 18th January 1884, N° 1724 made by me in conjunction with Alexander
Spencer are described india-rubber assistant bearing springs having channels or
passages arranged longitudinally therein with or without transverse channels
or passages. Now my present invention relates to special constructions of india-
rubber assistant bearing springs made with transverse holes passages or channels,
or both, as illustrated by the accompanying sheet of drawings.
Fig 1 represents in longitudinal vertical section and Fig 2 in plan an india-
rubber assistant bearing spring according to my invention formed with transverse
holes or passages A through the body B of the spring; these holes are arranged
with their axes in a common horizontal plane. In the modification represented in
Fig 3 and 4 there are upper and lower transverse holes or passages A so arranged
that a longitudinal line passing through the axes of all the holes or passages will
take a zig zag direction. In the arrangement illustrated in Fig 5 and 6 the
transverse holes or passages A are arranged with their axes in three parallel
"horizontal planes, each hole in the top row having its axis in the same vertical
plane with that of a hole in the bottom row, and the holes in the intermediate row
'having their axes in vertical planes between those in which the other axes are
situated.
Figs 7 and 8 shew a modification of spring made with a single row of holes A
having their axes in a common horizontal plane, and with transverse channels C of
semi-circular cross section in the top and bottom surface of the spring, one upper
and one lower transverse channel arranged with their axes in a common vertical

page_text: plane being provided between every two of the transverse holes A formel through
the body of the spring.
In Figs 9 and 10 is shewn a spring having semi-circular transverse channels C
at its top and bottom surfaces, the top channels having their axes in vertical planes
between those wherein the axes of the bottom channels are situated.
As is obvious the form in cross-section of the transverse passages or channels
may be variously modified to suit the requirements of particular applications and
according as the springs are desired to be more or less sensitive. D is in each case
the headstock side sole or cross-bar of the vehicle.
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
The use of india-rubber assistant bearing springs substantially such as herein-
above respectively described with reference to and illustrated respectively in
Figs 1 and 2; in Figs 3 and 4; in Figs 5 and 6; in Figs 7 and 8; and in Figs 9
and 10 of the drawings for the purposes set forth.
Mata1il: ns1
AD 106.