Improvements in or connected with Means for Announcing the Names of Stations and for Advertising in Railway Carriages.
Year: 1891

page_text: Date of Application, 24th Feb., 1891
Complete Specification Left. 23rd Dec., 1891-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Means for Announcing the
Names of Stations and for Advertising in Railway Carriages.
I, GEORGE WASHINGTON ROBERTSON, of 48 Upper Park Road, Haverstock
Hill, in the County of Middlesex, Engineer, do hereby declare the nature of this
invention to be as follows:
The invention has for its object inprovements in or connected with means for
announcing the names of stations and for advertising in railway carriages.
It has before been proposed to operate such apparatus by means of a fixed cam
or incline on the permanent way acting upon a dependent lever connected to a
shaft, which by suitable connections has operated the indicating apparatus.
Now according to my present invention I mount a lever at each side of the
carriage, preferably placed between the footboards, and I fix a cain, incline or
projection to the outgoing ends of the platforms, or to other parts at the side of
the permanent way, at such a height and position as to act on such levers as the
carriages pass the same. These levers are held normally in a central position by
springs and they are employed to act directly on the indicating mechanism,
they may be connected to a small motor placed between them and the indicating
mechanism, so as to cause such motor to act upon the indicating mechanism.
or
The interposed motor may be of any suitable character; as an example I would
state that it may be a compressed air motor, the cylinder of which is connected
with the compressed air receiver used for operating the breaks, the valve being
operated by the lever actuated by the fixed cam, incline or projection, and the
piston rod being connected to the mechanism for operating the indicator. The
valve or valves of the motor is or are so arranged as to be operated by the lever on
cither side of the carriage.
T
1
1
17
1001
GEO. W. ROBERTSON,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with Means for Announcing the
Names of Stations and for Advertising in Railway Carriages.
I, GEORGE WASHINGTON ROBERTSON of 48 Upper Park Road, Haverstock
Hill, in the County of Middlesex, Engineer, 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 invention has for its object improvements in or connected with means for
announcing the names of stations and for advertising in railway carriages.
It has before been proposed to operate such apparatus by means of a fixed cam
or incline on the permanent way acting upon a dependent lever connected to a
shaft which by suitable connections has operated the indicating apparatus.
Now according to my present invention 1 mount a lever at each side of the
carriage preferably placed between the footboards, and I fix a cam, incline or
projection to the outgoing ends of the platforins or to other parts at the side of the
permanent way, at such a height and position as to act on such levers as the
carriages pass the same. These levers are held normally in a central position by

page_text: by link with one arm of the bell crank lever h the other arm of which is connected
with the link c as before described.
Thus on the prime lever d being moved on its axis in either direction it will
shift the slide valve and thereby cause the piston to be moved in one or the other
direction and consequently give motion to the annunciating apparatus in a corre-
sponding direction. In order that after each action, the piston may be returned to
its normally central position I provide the motor with passages from each end of
the cylinder communicating with a common outlet governed by a suitable cock i
and connect the arm of such cock with an operating rod provided with two
projections which are acted upon in the one or the other direction by a stud or
projection on the end of the piston rod. By these means just towards the end
of the stroke of the piston in either direction the stud or projection will operate
the cock and thereby give vent to the steam or compressed air which has just
moved the piston, thus enabling the latter to return to its normally central position
by springs suitably applied thereto.
I will now describe the modification represented at Figures 5, 6, 7, 8.
In this
case the lever d is mounted on a horizontal axis and the outer end thereof has a
vertical motion imparted to it by a double cam or incline the form of which is
clearly shown at Figure 8. The inner end of the prime lever d is hy ball and
socket joint connected to one end of a link whose other end is pin jointed to
the inner end of a lever * whose outer end is pin jointed to the link c which
operates the station annunciating and advertising apparatus.
Instead of employing a motor of the character above described other description
of motor such for instance as an electric motor may be used in which case it would
be caused to operate in the one or the other direction by the lever d giving motion
to a suitable shunt.
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 :―
1. In station annunciating and advertising apparatus the combination therewith
of a prime lever d and double incline or cam f arranged and operating substantially
as herein shown and described with respect to Figures 1, 2, 3 and 5, 6, 7 & 8.
2. In station annunciating and advertising apparatus the combination of a prime
lever, a double incline or cam and an interposed motor between the prime lever
and the mechanism for operating the annunciator arranged substantially as herein
shown and described.
Dared December 23rd
DARK DEKOer TUI LON1
G. W. ROBERTSON,
By Harris & Mills,
23, Southampton Buildings, London, Agents.