Improvements in the Arrangement of Levers for Operating Signal Apparatus.
Year: 1892

page_text: Date of Application, 6th Dec., 1892
Complete Specification Left, 31st Jan., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Arrangement of Levers for Operating
Signal Apparatus.
I, EDWARD RUSSELL, of 12 Culverland Road, Exeter, in the County of Devon,
Signal Superintendent, do hereby declare the nature of this invention to be as
follows
:-
My invention has reference to improvements in the arrangement of levers for
operating signal apparatus.
It is desirable at times, especially in existing locking apparati, that signals in
connection with crossings should be provided, (where spare levers cannot be
obtained for the purpose of operating them) independently of the operation of the
points.
It is obvious that although my invention is described with reference to the
operating of signals, yet it may of course be used for the operation of any form of
signal apparatus..
The way in which I carry out my invention is as follows
Assuming the point lever to be in its normal position in the locking frame, I
arrange immediately at the back of it two levers. For the purposes of explanation
I will call them operating levers in connection with shunting signals. The space
in the segment through which the point lever operates is increased in order that
the two signal levers which are cranked to be close together have a sufficient space
to allow them a free travel. So that the point lever itself may not have any side
movement I arrange that it is thickened where the travel through the segment
takes place, by pieces rivetted on each side, or thickened in any other desirable
manner. The signal levers are cranked out underneath the segment and work upon
the same fulcrum as the point lever, or at all events upon fulcrums in the same
centre line as the point lever. The handles are also cranked out for the better
convenience of operation. The usual lead off connections are provided to the
signal levers, as is usual with ordinary signal levers. The release of the point
lever on the signal lever is of course dispensed with and the usual interlocking
between the signal levers themselves is effected in the ordinary manner.
The tails of the levers are cranked as desired for the purposes of clearance.
Dated this 6th day of December 1809
.
JOHN P. O'DONNELL,
2, Great George Street, Westminster, London, S.W.,
Agent for the said Applicant.
COMPLETE SPECIFICATION.
Improvements in the Arrangement of Levers for Operating
Signal Apparatus.
I, EDWARD RUSSELL, of 12 Culverland Road, Exeter, in the County of Devon,
Signal Superintendent, 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 reference
COMPLETE SPECIFICATION.
Improvements in the Arrangement of Levers for Operating
Signal Apparatus.
I, EDWARD RUSSELL, of 12 Culverland Road, Exeter, in the County of Devon,
Signal Superintendent, 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 reference to improvements in the arrangement of levere for
operating signal apparatus.
'It is desirable at times, especially in existing locking apparati, that signals in
connection with a crossing should be provided, where spare levers cannot be.

page_text: obtained for the purpose of operating them independently of the operation of the
points.
It is obvious that although my invention is described with reference to the
operating of signals, yet it may of course be used for the operation of any form of
signal apparatus.
The way in which I carry out my invention is as follows:-
Assuming the point lever to be in its normal position in the locking frame, I
arrange immediately at the back of it two levers. For the purposes of explanation
I will call them operating levers in connection with shunting signals. The space
in the segment through which the point lever operates is increased in order that
the two signal levers which are arranged to be close together have a sufficient space
to allow them a free travel. So that the point lever itself may not have any side
movement I arrange that it is thickened (or the drop box widened) where the travel
through the segment takes place, by pieces rivetted on each side, or thickened in
any other desirable manner.
The signal levers are cranked out underneath the segment and work upon the
same fulcrum as the point lever, or at all events upon a fulcrum in the same centre,
line as the point lever. The handles are also cranked out for the better con-
venience of operation.
The usual lead off connections are provided to the signal levers, as is usual with
ordinary signal levers.
The tails of the levers are cranked as desired for the purpose of clearance.
In order that my invention may be better understood and more readily carried
into effect I will proceed to describe the drawing hereunto annexed.
The figure in the drawing illustrates a perspective, view showing the levers in
their normal position...
e,
a is the point lever, 6 the drop box upon the point lever, e is the catch handle,
d the downward connection between the catch handle and the drop box, e and fare
the two levers operating through the same hole between the segments; these
levers of course may be utilized for the purpose of operating any kind of signal
apparatus, but for the purposes of this description I will refer to them as operating
disc signals. g is the catch handle of the lever e, h is the catch handle of the
lever, is the termination of the downright rod from the catch handle h acting as
a stop for the lever fin either position, kis the termination of the downright rod
from the catch handle g acting similarly as a stop for the lever
is a rib upon
the segment forming the stop for the drop box 6 of the point lever a, m is a hole
in the segment for the reception of the termination j of the catch handle acting as a
stop in the pulled over position of the lever f, n, n' are the ends of the ribs 1, 11
which form stops against the drop box b in the pulled over position of the lever a.
The description of the operation of e is similar to that herein referred to for the
lever f. e and fare held in the normal position by the terminations of the catch
rods and k, and were these raised by means of the catch handles the levers would
still be prevented from being operated by the lever a. When a is operated to the
pulled over position it is held in its pulled over position by the back of the drop
box abutting against the ends n, n' of the ribs 1, 1, the levers e and are then free
to be operated towards the pulled over position of a and are held in that position
by the terminations j and k being thrust into the recesses or holes m, an equivalent
hole to the one shown being provided on the other side for the lever e. Similarly,
a cannot be replaced to its normal position until e and have been replaced by the
terminations and k being moved upward on to the rib and they being replaced to
their normal position; then a can be returned to the normal position.
I have shown the levers cranked to allow a convenient space for the hand for the
purposes of operation and both the levers e and ƒ may be cranked on the under side
of the segment to allow them to be fulcrumed on either side of the lever a. The
connections I have shown for the purposes of convenience, leading off from the tail
of the point lever a on one side and the tails of the disc leverse and ƒ on the
other side.

page_text: It is obvious that although I have described the two levers e and. as being
behind another lever, such as a, yet it is obvious my invention is applicable without
the point lever or any other lever being in front of them, that is to say, that two
levers may be operated in one segment, such as e and fare in their working, and it
is obvious also that the said levers e and f may be employed for operating any
signal apparatus in addition to the operation of disc signals as described.
It is also obvious that although I have shown in the drawing one lever in front of
two, yet if desirable two levers might be situated in front of one.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
-
1. In interlocking apparatus for railway pointband signal levers, the arrangement
of two levers operating through the same slot or opening in the segment (hitherto
usually employed for one lever) substantially as set forth.
2. In interlocking apparatus for railway point and signal levers, the arrangement
of three levers operating in the same slot or opening in the segment (hitherto
usually employed for one lever), whereby one lever is situated in front of two
(or two in front of one), all substantially as set forth and illustrated in the drawing.
annexed.
3. In railway point and signal apparatus the arrangement of levers by which one
lever operates in front of and through the same slot or opening in the segment as
two other levers, all substantially as set forth.
Dated this 31st day of January 1893.
JOHN P. O'DONNELL,
70 & 71, Palace Chambers, Bridge Street, Westminster, S.W.,
Agent for the said Applicant.