Improvements in Railway Signalling Apparatus.
Year: 1893

page_text: Date of Application, 11th Feb., 1893
Complete Specification Left, 16th June, 1893-Accepted, 23rd Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Railway Signalling Apparatus.
We, HARRY BODDINGTON, of 6) Skilbeck Street, New Wortley, Leeds,
Foreman Fitter, and EDWARD GARDNER, of 81 Battye Street, Laisterdyke,
Foreman Fitter, do hereby declare the nature of this invention to be as
follows:-
Our invention has reference to certain improvements in railway signalling
apparatus.
The object of our invention being to provide automatic apparatus for the better
protection of trains standing between the "home" and "advance" signals, and
when crossing from one line to another.
In carrying out our invention we employ a box fitted in connection with the
instrument shelf and provided with a movable or sliding indicating plate, which is
held in position within the said box by means of a projection engaging with a
pivoted catch.
Upon the said pivoted catch are projections adapted to engage with the ends of
rods or levers forming connections with the cross-over disc or "siding" signals
and "home" signal lever catch; the vertical position of the said pivoted catch being
controlled by means of a spiral spring or its equivalent.
Journaled within the said box is an axis (connected with "advance" signal)
having arms with projections thereon adapted to engage with a hook shaped
projection upon the said sliding indicating plate.
The action of our apparatus is such as follows:-
On pulling the disc signal lever for an engine or train to pass over the main
crossing, from up to down main, the end of the rod or lever forming the connection
with the said pivoted catch and "cross over disc" signal engages with its projection
upon the said pivoted catch so releasing the said pivoted catch and the projection
upon the sliding indicating plate which instantly drops in front of the "down main
home" signal lever and indicates "line blocked.'
On pulling off the "down main advance" signal the said sliding indicating plate
is returned to its normal position by means of the arms carried upon the axis afore-
said engaging with its hook shaped projection.
"
Further, on pulling off the "home" signal lever to allow a train to draw inside
the "home" or up to the "advance" signal, on placing the "home" signal at
danger the end of the catch rod or lever, forming the connection with the "home"
signal and the said pivoted catch, engages with its projection upon the said pivoted
catch, and so releases the sliding indicating plate and drops it into position for
indicating "line blocked" when the lever catch handle falls into its normal
position; the parts are returned to their positions on pulling of the “advance
signal.
Dated this 7th day of February 1893
"
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent to the Applicants.

page_text: invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our invention has reference to certain improvements in railway signalling
apparatus.
The object of our invention being to provide automatic apparatus for the better
protection of trains standing between the "home" and "advance" signals, and
when crossing from one line to another.
DESCRIPTION OF DRAWINGS.
Fig. 1, is a side elevation showing our improvements applied.
Fig. 2, is a front elevation.
Fig. 3, is a detail sectional side elevation of our automatic indicating apparatus.
Fig. 4, is a detail front elevation partly in section of Fig. 3.
Fig. 5, is a plan of our automatic indicating apparatus as shown in Figs. 1 and 2.
In carrying out our invention we employ a box A fitted in connection with the
instrument shelf B and provided with a movable or sliding indicating plate C which
is held in position within the said box A by means of a projection D engaging with
a pivoted catch E.
Upon the said pivoted catch E are projections F adapted to engage with the
ends of rods or levers G and H, forming connections with the "cross-over disc" or
siding signals and "home" signal lever catch, G being the connection to the "cross
over disc "
or siding signal, and H the connection to the "home" signal lever catch;
the vertical position of the said pivoted catch E being controlled by means of a
spiral spring J or its equivalent.
Journaled within the said box A is an axis K (connected with "advance" signal)
having arms L with projections M thereon, adapted to engage with a hook-shaped
projection N upon the said sliding indicating plate C. O is an arm upon the
axis K, and connected to an axle or cross-shaft P by means of a crank R, one end
of the said crank engaging with the arm O and the other with a rod S which passes
down to a loose crank T upon a shaft U supported from the wall V by means of
brackets W, the loose crank T works between fast collars X upon the said shaft U
and the lower arm Y of the said loose crank T engages with a rod Z which is con-
nected to the "advance" signal lever Z. The rod H is connected to the axle or
cross-shaft P by means of a crank R¹, one end of the said crank engaging with the
said rod H and the other with a rod S¹ which is connected to a lever S (pivoted
upon a support S³) and to the "home" signal lever S by means of catch S³ and
projection S upon the "home" signal lever S. The rod G is also connected to
the axle or cross-shaft P by means of a crank P¹, one end of the said crank
engaging with the said rod G and the other with a rod P' which is connected to an
arm P' upon the shaft U. U is a fast arm upon the shaft U and is connected to
the next signal lever (spring catch rod lever) U2.
The action of our apparatus is such as follows:-
On pulling the "disc" signal lever for an engine or train to pass over the main
crossing, from up to down main, the end of the rod G forming the connection with
the said pivoted catch E, and "cross-over disc" signal lever engages with its
projection F upon the said pivoted catch E, so releasing the said pivoted catch
and the projection D upon the sliding indicating plate C which instantly
drops in front of the "down main home" signal lever and indicates "line
blocked."

page_text: On pulling off the "down main advance" signal the said sliding indicating
plate C is returned to its normal position by means of the arms L carried upon the
axis K engaging with the hook shaped projection N.
"
Further, on pulling off the "home" signal lever S to allow a train to draw
inside the "home or up to the "advance" signal, on placing the "home" signal
at danger the projection S is released from the catch S and so allows the lever S
to tilt on its fulcrum until its motion is arrested by the stop S', the tilting of the
rod S causes the rod S¹ to be pulled downwards, and the end of the catch rod H,
forming the connection with the "home" signal and the said pivotel catch E,
engages with its projection Fupon the said pivoted catch E, and so releases the
sliding indicating plate C and drops it into position for indicating line blocked,"
when the lever catch handle falls into its normal position, the parts are returned to
their positions on pulling off the "advance" signal.
6:
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In railway signalling apparatus the dropping of an indicating plate before a
signal lever, which lever requires to be pulled over before the said plate is caused
to drop, substantially as set forth.
2. In railway signalling apparatus the dropping of an indicating plate before a
signal lever, which lever requires to be pulled over before the said plate is caused
to drop and the returning of such indicating plate to its normal position, in the
manner and for the purposes substantially as set forth.
3. In railway signalling apparatus the combination of a box A carrying an'
indicating plate C held in position within the said box A by means of a pivoted
catch E, which on being released from contact with the said indicating plate C,
by the action of mechanism interposed between the said pivoted catch and the
signal lever, allows the indicating plate to fall before such signal lever, substantially
as set forth.
4. In railway signalling apparatus the combination of a box A indicating plate C,
pivoted catch É, rods G and H, arm L, projection N, arm O, and axis K, operating
as and for the purposes shown and described.
Dated this 8th day of June 1893.
JOHN E. WALSH,
Royal Exchange Chambers, Leeds, Patent Agent to the Applicants.