Improvements in the Manufacture of the Tongue Rails of Railway Switches.
Year: 1895

page_text: Date of Application, 26th Nov., 1895
Complete Specification Left, 26th Aug., 1896-Accepted, 14th Nov.,
1896
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of the Tongue Rails of Railway
Switches.
We, EDWARD PRITCHARD MARTIN, of Dowlais Iron Works, Dowlais in the
County of Glamorgan, and RICHARD PRICE-WILLIAMS, of 32 Victoria Street,
Westminster in the County of Middlesex, do hereby declare the nature of this
invention to be as follows:-
-
The improvements relate to the manufacture of railway switch tongue rails made
from lengths of rolled rails of the same section as the rails with which the railway
is laid and in which every cross section of the tongue rail is approximately of the
same area as the rail from which it is formed.
According to our invention we form such tongue rails by rolling. This we do
by making the circumference of the rolls equal approximately to the length of rail
to be acted on-and by making the grooves around such rolls of such a form that
when the rolls are in one position the passage between them corresponds exactly
with the cross section of the rail to be acted on and allows of a rail being inserted
flatwise or somewhat inclined from that position between them-then as the rolls
are turned from this position the passage between the rolls changes in form until
at the end or nearly at the end of one revolution the passage between the rolls
corresponds to the form to which the extremity of the tongue rail is to be
brought.
In this section that is at the extremity of the tongue rail the whole of the upper
head of the rail will have been displaced sidewise and moulded into such a form
that it will all lie below the original level of the head and will fit to the space
between the head and foot of the stock rail which it is to lie alongside of.
The rails may be passed once or more between the rolls in the same or in
different grooves. In the case of their being passed through the same grooves the
rolls would be set nearer and nearer together each time the rail was passed between
them.
Dated this 26th day of November 1895.
EDW. P. MARTIN,
R. PRICE-WILLIAMS,
By Carpmael & Co.,
Agents for the Applicants.
Improvements in the Manufacture of the Tongue Rails of Railway
Switches.
We, EDWARD PRITCHARD MARTIN, of Dowlais Iron Works Dowlais in the
County of Glamorgan, and RICHARD PRICE-WILLIAMS, of 32 Victoria Street,
Westminster, in the County of Middlesex, 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 :-
The improvements relate to the manufacture of railway switch tongue rails made

page_text: from lengths of rolled rails of the same section as the rails with which the railway
is laid and in which every cross section of the tongue rail is approximately of the
same area as the rail from which it is formed.
According to our invention we form such tongue rails by rolling. This we do
by making the circumference of the rolls equal approximately to the length of rail
to be acted on-and by making the grooves around such rolls of such a form that
when the rolls are in one position the passage between them corresponds exactly
with the cross section of the rail to be acted on and allows of a rail being inserted
flatwise or somewhat inclined from that position between them-then as the rolls
are turned from this position the passage between the rolls changes in form until
at the end or nearly at the end of one revolution the passage between the rolls
corresponds to the form to which the extremity of the tongue rail is to be
brought.
In this section that is at the extremity of the tongue rail the whole of the upper
head of the rail will have been displaced side wise au moulded into such a form
that it will all lie below the original level of the head and will fit to the spice
between the head and foot of the stock rail which it is to lie alongside of.
Figure 1 shows a pair of rolls constructed in this manner,
Figure 2 is a plan of a railway switch and
Figures 3 to 8 are sections on the lines 3-3 to 8-8 Figure 2 respectively.
The circumference of the rolls shown in Figure 1 is approximately equal to the
length of rail to be acted on and the grooves in them are of such a form as to
produce the tongue rails shown at Figures 2 to 8. It will be observed that the
end of the tongue rail (see Figures 2 and 8) has a very wide base this prevents
the pressure on the rail from tilting it and then opening the switch.
It will be observed also (see Figure 2) that the tongue rail is slightly twisted in
a horizontal plane so as to fit snugly against the stock rail.
The rails may be passed once or more between the rolls in the same or in
different grooves. In the case of their being passed through the same grooves
the rolls would be set nearer and nearer together each time the rail was passed
between them.
In cases where it is desired to increase the width of the foot of the tongue rail
in place of rolling from a double headed rail as shown it is more convenient to
employ a flat footed or Vignole rail. The same results may be obtained by rolling
from partly finished rails or blooms.
Having now particularly described and ascertained the nature of our said
invention and in what manuer the same is to be performed we declare that what
we claim is:-
1. Rolling a tongue rail every cross section of which is of approximately the
same area by means of rolls whose circumference is approximately equal to the
length of the rail substantially as described.
2. Rolling a tongue rail every cross section of which is of approximately
the same area from a length of rolled rail by means of rolls whose circumference
is approximately equal to the length of the rail substantially as described.
3. Tongue rails substantially as described and shown at Figures 2 to 8 of the
drawings.
Dated this 26th day of August 1896