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

page_text: We GEORGE SPENCER, of 77 Cannon Street, in the City of London, Civil
Engineer, and ALEXANDER SPENCER, of the same address, Engineer, do hereby
declare the nature of said invention for IMPROVEMENTS IN INDIA RUBBER
ASSISTANT BEARING SPRINGS FOR RAILWAY AND TRAMWAY ROLLING STOCK
as follows:-
"
to be
Our invention relates to the construction of india rubber assistant bearing
springs for railway and tramway rolling stock. In the specification of a former
patent granted to one of us the said George Spencer-N° 3535 dated 18th July
1883, are described india-rubber bearing springs made with transverse channels.
Now according to our invention india-rubber assistant bearing springs are con-
structed with channels or passages extending longitudinally from end to end,
thereof, and of any suitable section, the arrangement being such that the springs
being used with their channels or passages running fore and aft of the carriage or
vehicle to which they are applied air will be able to circulate freely therethrough.
Such channels or passages may be either at the upper or at the lower surface of
the blocks or both; and in conjunction with the longitudinal channels or passages
we in some cases provide transverse channels or passages. Where both transverse
and longitudinal passages or channels are employed the substance of the india-
rubber. block or spring between the channels or passages may be in the form of a
series of projections of circular or approximately circular shape as seen in horizontal
section. The channels or passages may be straight or otherwise and springs as
described may be made with longitudinal channels or passages at one surface and
transverse channels or passages at the opposite surface or with longitudinal and
transverse channels or passages both at one surface; or with both longitudinal
and transverse channels or passages at each of the two opposite surfaces, i e,―the
upper surface and the lower surface.
1011 1 T 100A

page_text: We, GEORGE SPENCER, of 77 Cannon Street in the City of London, Civil
Engineer, and ALEXANDER SPENCER, of the same address, Engineer, do hereby
declare the nature of said 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:―
"
Our invention relates to the construction of india-rubber assistant bearing springs
for railway and tramway rolling stock.
In the specification of a former patent granted to one of us the said George
Spencer N° 3535 dated July 18, 1883, are described india rubber bearing springs
made with transverse channels.
Now according to our invention india-rubber assistant bearing springs are
constructed with channels or passages extending longitudinally from end to end
thereof and of any suitable section the arrangement being such that the springs
being used with their channels or passages running fore and aft of the carriage
or vehicle to which they are applied air will be able to circulate freely there-
through.
Such channels or passages may be either at the upper or at the lower surface of
the blocks or both; and in conjunction with the longitudinal channels or passages
we in some cases provide transverse channels or passages.
Where both transverse and longitudinal passages or channels are employed the
substance of the india-rubber block or spring between the channels or passages-
may be in the form of a series of projections of a circular or approximately circular
shape as seen in plan or horizontal section.
The channels or passages may be straight or otherwise and springs as described
may be made with longitudinal channels or passages at, one surface and transverse
channels or passages at the opposite surface or with longitudinal and trans-
verse channels or passages both at one surface, or with both longitudinal and
transverse channels or passages at each of the two opposite surfaces i.e: the upper
and the lower surface.
In order that our invention may be fully understood we append a sheet of
drawings illustrating arrangements embodying our improvements. Figs 1, 1ª and 1b
shew respectively a side elevation, an end elevation and a plan of an india-rubber
block or spring with longitudinal channels or passages at its upper surface only
C being the india-rubber and D, D the longitudinal channels or passages.
Figs 2, 2, and 2b are similar views shewing an india-rubber block or spring C
with longitudinal channels or passages D at its lower surface only. Figs 3, 3, 3b,
are like views shewing an india-rubber block or spring C with longitudinal
channels or passages D at both its upper and lower surfaces. Figs 4, 4ª, 4b are like
views shewing an india-rubber block or spring C with longitudinal channels or
passages D at one surface and transverse channels or passages E at the other
surface. Figs 5, 5ª, 5b are like views shewing an india-rubber block or spring C
with longitudinal channels or passages D in combination with transverse passages E
at one surface only. Figs 6, 6ª, 6b, are corresponding views shewing an india-
rubber block or spring C with longitudinal channels or passages D in combination
with transverse channels or passages E at both surfaces.
Figs 7, 7, 7b are like views of an arrangement wherein the projections of the
india-rubber block or spring C situate between the longitudinal and transverse
channels or passages D and E are of a circular form. F in all cases is the headstock
cross-beam or sole-bar of the vehicle.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-The use of india rubber assistant bearing springs formed with
longitudinal channels or passages alone or in conjunction with transverse channels
or passages substantially as herein before described with reference respectively to
Figs 1. 1. and 1b; Figs 2. 2 and 2b; Figs 3, 3*, and 3b; Figs 4, 4, and 4b;
Figs 5, 5 and 5b; Figs 6. 6ª and 6b; and Figs 7. 7° and 7%, of the Drawings.
Dated this twentieth day of October 1884