Points of Railways.
Year: 1887

page_text: Date of Application, 29th Mar., 1887.
Complete Left, 7th June, 1887.
Complete Accepted, 22nd July, 1887.
Points of Railways.
I GEORGE EDWARDS Managing Director of the Railway Signal Company Limited
of Fazakerley Liverpool in the County of Lancaster do hereby declare the nature of
this Invention to be as follows :-
:-
My Invention has for its object to provide means in connection with the facing points
of railways by which it can be ascertained that the locking bar or lifting bar which
is provided for preventing the points being shifted whilst a train is passing thereover
has responded to the lever which works it and the plunger of the facing point lock so
as to shew whether the said locking or lifting bar has been properly thrown over when
the operating lever is thrown over in the cabin.
For this purpose I provido a locking arrangement for the point which locking
arrangement is unlocked by the proper movement of the locking or lifting bar so that
the point remains locked and cannot be moved over unless the locking or lifting bar
has been properly moved in response to the movement of the lever. This may be
effected according to my Invention by the following arrangement premising that I do
not necessarily limit myself to the precise details of construction. In the stretcher
bar of the points I make two slots or recesses with one or the other of which a locking
bolt engages according to the position of the points. A spring or the like constantly
tends to pull this bolt into the position in which it locks the point. The said bolt is
released when the locking or lifting bar is moved over by a lever connected to the
said bar pressing the bolt forward out of its engaging position the said bolt being
then held in its disengaged position by a catch lever engaging therewith under the
action of a spring or the like. When the point is moved over a projection thereon,
or connected therewith, causes the catch lever to be pressed out of engagement with
the bolt which under the action of its spring or the like engages with the slot or
recess in the stretcher bar which comes opposite the said bolt when the points are
fully moved over. If any breakage occurs whereby the locking or lifting bar is not
operated the point cannot be moved over and the man in the signal cabin is thereby
made aware of the breakage.
1
001 3
C
I 1007
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents for the said G. Edwards.

page_text: I, GEORGE EDWARDS, Managing Director of the Railway Signal Company Limited,
of Fazakerley Liverpool in the County of Lancaster 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:-
My Invention has for its object to provide simple and efficient means in connection
with the facing points of Railways by which it can be ascertained that the locking bar
or lifting bar (which is provided for preventing the points being shifted whilst a train
is passing thereover) has responded to the lever which works it and the plunger of
the facing point lock so as to shew whether the said locking or lifting bar has been
properly thrown over when the operating lever is operated in the cabin.
For this purpose, I provide a locking arrangement for the point, which locking
arrangement is unlocked by the proper movement of the locking or lifting bar so that
the point remains locked and cannot be moved over unless the locking or lifting bar
has been properly moved in response to the movement of the lever in the cabin. This
is effected according to my Invention by the following arrangement which I will
describe with reference to the accompanying drawings of which Figures 1 and 2 are
sectional elevations shewing respectively the bolts engaged with and disengaged from
the stretcher bar of the point and Figure 3 is a plan. D² is the casing enclosing
the mechanism. In the stretcher bar B of the points I make two slots or recesses b³
(a distance apart corresponding to the extent of movement of the points) with one or
the other of which recesses a locking bolt I engages according to the position of the
points. Springs (or the like) J constantly tend to pull this bolt I into the position in
which it locks the point. The said bolt is released, when the locking or lifting bar is
moved over, by a lever K centered at (and connected to the said bar by any suit-
able link or connection so that as the bar moves, the lever is pushed or drawn over)
pressing the bolt I forward out of its engaging position the said bolt being
then held in its disengaged position by a catch lever L engaging therewith (by
taking behind the projection thereon) under the action of a spring M or the
like. When the points are moved over a projection 6 on or connected with the
stretcher bar thereof acts on the slide N and this acts on the catch lever L
and presses it out of engagement with the projection on the bolt I which
under the action of its springs J or the like engages with the slot or recess 6³
in the stretcher bar which comes opposite the said bolt I when the points are fully
moved over.
If any breakage occurs whereby the locking or lifting bar is not
operated the point cannot be moved over and the man in the signal cabin is thereby
made aware of the breakage.

page_text: 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 :-
In connection with the facing points of railways for indicating whether the locking
or lifting bar has been properly operated an automatic locking arrangement consisting
of a locking bolt capable of engaging with the stretcher bar of the points and operated
to unlock the points by the movement of the locking or lifting bar and released by
the movements of the points substantially as hereinbefore described and illustrated by
the accompanying drawings.