An Improved Indicating Disc Signal for Railway and other Purposes.
Year: 1889

page_text: Date of Application, 17th Apr., 1889
Complete Specification Left, 17th Jan., 1890-Accepted, 1st Mar., 1890
-
PROVISIONAL. SPECIFICATION.
[Communicated from abroad by SIDNEY PRESCOTT WOOD, of Semaphore Iron
Works, Newport, near Melbourne, Victoria, Engineer.]
An Improved Indicating Disc Signal for Railway and other Purposes.
I WALTER HOLLAND, Civil, Engineer, of the Vulcan Works, Worcester, in the
County of Worcester, do hereby declare the nature of this invention to be as
follows:-
4
This invention has reference to visible signalling apparatus for railway and other
purposes, of the kind in which a lamp is used in conjunction with discs hereinafter
called targets. According to this invention the lamp is made stationary and the
targets, fitted with pieces of colored glass, are secured to a carriage or carrier
that is directly actuated from any suitable apparatus such as the points of a railway
line.
.
In such an indicating disc signal apparatus arranged to be actuated by a rigid
connection; a lamp carriage with lamp of crdinary construction is securely fixed upon
a stud that is carried by a standard of suitable material such as cast iron. Upon the
stud, a target carriage is mounted such a manner as to allow of its being revolved.
This target carriage is provided with an elongated slot, in which is able to work. freely
one arm of a straight lever that is journalled upon a pin carried by the standard; to
the other arm of the lever is jointed an actuating rod, the arrangement being such
that by actuating the lever, the target carriage can be revolved to any desired
position.
Targets of ordinary construction with colored glass are secured to the target
carriage which as well as the standard, is provided with suitably arranged stops.
Where it is desired to work the target carriage with a flexible connection, an upright
Tor L shaped lever is substituted for the straight lever herein before mentioned.
Some of the advantages of the improved signalling apparatus over others now in
use are:-
(1) The lamp being always stationary it is not subjected to constant jar as at
present, consequently its life will be materially lengthened.
(2) There being no set screws or bolts in the wearing parts, the danger of cutting
through is abolished.
(3) Simplicity in construction.
4 Reduction in cost of manufacture.
шау тарти 1000.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Indicating Disc Signal for Railway and other Purposes.
A communication from SIDNEY PRESCOTT WOOD, of the Semaphore Iron Works,
Newport, near Melbourne, Victoria.
1, WALTER HOLLAND, Civil Engineer, of the Vulcan Works, Worcester, in the
County of Worcester, do hereby declare the nature of this invention and in whit
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
This invention has reference to visible signalling apparatus for railway and other

page_text: purposes of the kind in which a lamp is used in conjunction with discs hereinafter
called targets. According to this invention the lamp is made stationary, and the
targets, fitted with pieces of colored glass, are secured to a carriage or carrier that
is directly actuated from any suitable apparatus such as the points of a railway
line.
'
In such an indicating disc signal apparatus arranged to be actuated by a rigid
connection, a lamp carriage or carrier with lamp of ordinary construction is securely
fixed upon a stud that is carried by a standard of suitable material such as cast iron:
Upon the stud, a target carriage or carrier (hereinafter called a carrier) is mounted
in such a manner as to allow of its being readily turned. This target carrier is
provided with an elongated slot, in which is able to work freely one arm of a straight
lever that is journalled upon a pin carried by the standard; to the other arm of the
lever is jointed an actuating rod, the arrangement being such that by actuating
the lever, the target carrier can be revolved to any desired position.
Targets of ordinary construction with colored glass are secured to the target carrier,
which as well as the standard, is or may be provided with suitably arranged stops.
In the accompanying drawings,
Fig. 1 is a side elevation, and
Fig. 2 a plan of an indicating disc signal constructed according to this invention.
Fig. 3 is a similar view to Fig. 1 but shewing the lever F moved into its other
extreme position and the targets c in positions at right angles to those shewn in
Fig. 1.
Fig. 4 is a plan of the apparatus as shewn in Fig. 3, but without the signal lamp.
Fig. 5 is an elevation of the apparatus at right angles to Fig. 1.
Figs. 6 and 7 are respectively a side elevation, and a plan of the target-carrier.
A is a standard the upper part of which is provided with an upwardly extending
stud B upon which is mounted a target carrier C in such a manner that it can turn
freely thereon. This target-carrier is kept in place vertically by an ordinary lamp-
carrier D secured upon the stud by any suitable means, as for instance by a set
screw d. To the lamp-carrier is secured an ordinary semaphore signal lamp E. A
pair of ordinary targets c c provided with colored glasses c are bolted to the target-
carrier C in the usual manner, but instead of operating this target-carrier as heretofore
there is cut or otherwise formed therein a slot f, ff as clearly shown in Fig. 7.
Through this slot extends the upper end or arm of a lever F in such a manner that
when this lever is turned upon its supporting stud fit will turn the target-carrier into
one or other of two positions at right angles to each other according to the direction
in which the lever is moved, and in which positions it will be securely locked by the
lever F entering one or other of the parts for f of the slot, as clearly illustrated in
Figs. 2 and 4 of the accompanying drawings. If found desirable, an additional
stop (Fig. 6) may be provided upon the underside of the target-carrier C so as to
more effectually ensure the movement of the target-carrier to its correct positions by
causing said projection to come in contact with other suitable projections provided
for the purpose upon any convenient part of the apparatus. With the arrangement
of lever Fillustrated in Figs. 1, 3 and 5, a rigid connection between it and its
operating lever in the signalman's cabin is a sine qua non.
Where it is desired to work the target-carrier with a flexible connection, an
upright or shaped weighted lever is substituted for the straight lever hereinbefore
mentioned.
Figs. 8 and 9 are respectively a side elevation, and a plan of such an arrangement
of indicating disc signal. The lever F in this case is provided with an additional
arm F upon which is secured a counter-balance weight F1 that serves to move the
lever from the position shewn in dotted lines to that shewn in full lines in Fig. 8 when
the lever is released by the signalman. F' is a shackle jointed to the lower arm of the
lever F and by means of which the lever is connected through a flexible connection to
the signalman's lever or other device by which the lever F is to be worked. In other
respects the construction and operation of this modified arrangement is similar to that
hereinbefore described with reference to and shewn in Figs. 1 to 7 inclusive.

page_text: Some of the advantages of the improved signalling apparatus over others now in
use are:-
(1) The lamp being always stationary is not subjected to constant jar as at present,
consequently its life will be materially lengthened.
(2) There being no set screws or bolts in the wearing parts, the danger of cutting
through is abolished.
(3) Simplicity in construction.
(4) Reduction in cost of manufacture.
(5) Smaller cost for maintenance.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The construction of an indicating disc signal for railway and other purposes with
a stationary lamp, a carrier and a target or targets in such a manner that when the
carrier is actuated the lamp will not turn with the target or targets but will remain
stationary as set forth.
2. The improved indicating disc signal for railway and other purposes, comprising
the combination of a target carrier such as C, having a slot, such as f, f, f, cut or
otherwise formed therein, with a lever, such as F, pivotted upon a suitable support and
so arranged that its upwardly extending arm passes through the slot in the target-
carrier in such a manner that when the lever is operated it will turn the target carrier
and attached parts, whether such lever be operated by a rigid connection as shown in
Fig. 1, or by a flexible connection as shewn in Fig. 8, substantially as herein
described.
Dated this 16th day of January 1890.
WILLIAM HOLLAND
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.