Year: 1886

page_text: Date of Application, 10th June, 1886.
Complete Left, 10th Mar., 1887.
Complete Accepted, 15th Apr., 1887.
We THOMAS WRIGHTSON of the Teesdale Iron Works, Stockton on Tees in the
County of Durham and JOHN MACKENZIE of Middlesbrough in the County of York
Engineers do hereby declare the nature of this invention to be as follows:-
According to this invention we form sleepers or supports for double headed rails
each from one piece of sheet metal so bent as not only to form a sleeper or support for
the rail but also a chair in which the lower part of the rail may be held.
Usually we form separate supports or sleepers for each rail and couple the supports
of one rail to the supports of the other rail by tie rods as is usual with what are known
as pot sleepers.
We form each support from a flat rectangular sheet of metal.
The sheet of metal is bent or crimped across the middle so as to form across it a
trough or channel for the lower part of the rail to rest in.
At the centre this trough is brought to a cross section similar to the section of a
chair such as would ordinarily be used for holding the rail. Towards the ends the
trough decreases in depth and increases in width, that is it spreads out or dies away
at the ends.
Along each end of the plate which is at right angles to the trough a strip of a
few inches in width is bent downwards to give strength and to impede the sleeper or
support from being shifted by the driving in of the wedges used for securing the rails.
A central crimp or bend is also formed in the metal standing up on either side of
the trough and at right angles to it-these crimps or bends are readily made as the
crimping or drawing inwards of the metal from two opposite sides to the centre to
form the trough before mentioned naturally tends to bend the metal into this form.
To the upstanding projection so made on the inner side of the sleeper the end of
the tie bar used for holding the sleeper to the sleeper opposite to it and used for
supporting the other rail may be secured.
Sleepers or supports of the above form can be bent, pressed or stamped from sheets
or bars of metal without materially extending any part of the metal sheet so that
the bending pressing or stamping of the sheet to the required form can be readily
effected.
TA: 104. J
T
100%
CARPMAEL & Co.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Sleepers or Supports for the Rails of Railways.
We, THOMAS WRIGHTSON of the Teesdale Iron Works, Stockton-on-Tees, in the
County of Durham, and JOHN MACKENZIE of Middlesbrough in the County of York,
Engineers, 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:—
According to this invention we form sleepers or supports for double headed rails
each from one piece of sheet metal so bent as not only to form a sleeper or support for
the rail but also a chair in which the lower part of the rail may be held.
Usually we form separate supports or sleepers for each rail and couple the supports
of one rail to the supports of the other rail by tie rods as is usual with what are known
as pot sleepers.
We form each support from a flat rectangular sheet of metal.
The sheet of metal is bent or crimped across the middle so as to form across it a
trough or channel for the lower part of the rail to rest in.
At the centre this trough is brought to a cross section similar to the section of a
chair such as would ordinarily be used for holding the rail. Towards the ends the
trough decreases in depth, and increases in width, that is it spreads out or dies away
at the ends.
Along each end of the plate which is at right angles to the trough a strip of a few
inches in width is bent downwards to give strength and to impede the sleeper, or
support from being shifted by the driving in of the wedges used for securing the rails.
A central crimp or bend is also formed in the metal standing up on either side of
the trough and at right angles to it these crimps or bends are readily made as the
crimping or drawing inwards of the metal from two opposite sides to the centre to
form the trough before mentioned naturally tends to bend the metal into this form.
To the upstanding projection so made on the inner side of the sleeper the end of
the tie bar used for holding the sleeper to the sleeper opposite to it and used for
supporting the other rail may be secured.
Sleepers or supports of the above form can be bent, pressed or stamped from sheets
or bars of metal without materially extending any part of the metal sheet so that
the bending, pressing, or stamping of the sheet to the required form can be readily
effected.
The drawings annexed shew a sleeper formed as above described.
Figure 1 is an end elevation, Figure 2 a side elevation and Figure
a plan.
A is the bend or crimp formed across the middle of the plate to produce a trough
for the rail B to rest in. CC are the crimps or bends to form ridges at right angles
to the trough A. D is the end of a tie bar held in one of these ridges by keys E.
F, is a wedge for holding the rail into the trough A as in ordinary railway chairs.
Although in the drawings we have only shewn a sleeper formed to receive and hold
a double headed rail we do not confine ourselves thereto as sleepers may be similarly
formed to receive and hold bull headed or other forms of rails.

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
--
1. A sleeper or support formed of a sheet of metal bent so as to be of a hollow or
dished form on its under side and so as to form a chair on its upper side in which the
lower part of a rail may be held in substantially as described.
2. A sleeper or support for the rails of railways formed of a sheet of metal bent so
as to form a trough A for the rail to rest in and with other bends CC to form ridges
on either side of the trough and at right angles to it substantially as described.
3. A sleeper or support formed substantially as herein before described and
illustrated in the drawing annexed.
1054
CARPMAEL & Co.,
Agents for the Applicants.