Improvements in Fastenings for Railway Carriage Doors.
Year: 1894

page_text: Date of Application, 25th May, 1894
Complete Specification Left, 7th July, 1894-Accepted, 29th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Fastenings for Railway Carriage Doors.
1 JAMES BOOTH SCARLETT, of 1 Dacre Road, Newhaven, in the County of
Sussex, Superintending Engineer, Marine and Locomotive Department London
Brighton and South Coast Railway, do hereby declare the nature of this invention
to be as follows :—
This invention for improvements in fastenings for railway carriage doors has for
its object to enable the guard or other person in charge to control the fastening
and unfastening of all the carriage doors in a train and consists in actuating a
sliding or other bolt by means of the piston of an air cylinder connected to an air
pump on the locomotive or elsewhere or to the train pipe or reservoir of an air
brake apparatus or other convenient source under the control of a person in charge
of the apparatus.
Where a separate air cylinder is provided for each carriage
door the piston rod itself, working in a suitable stuffing box, may form the bolt,
the cylinder being secured to the standing side of the carriage body, and the outer
end of the piston rod being caused to engage with a socket or other suitable fixing
on the carriage door.
=
Dated this 25th day of May 1894.
WHEATLEY & MACKENZIE,
. 40, Chancery Lane, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Fastenings for Railway Carriage Doors.
1 JAMES BOOTH SCARLETT, of 1 Dacre Road, Newhaven in the County of
Sussex, Superintending Engineer, Marine and Locomotive Department, London
Brighton and South Coast Railway, 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 :-
This invention for improvements in fastenings for railway carriage doors has for
its object to enable the guard or other person in charge to control the fastening
and unfastening of all the carriage doors in a train and consists in actuating a
sliding or other bolt by means of the piston of an air cylinder connected to an air
pump on the locomotive or elsewhere or to the train pipe or reservoir of an air
brake apparatus or other convenient source under the control of a person in charge
of the apparatus.
In the accompanying sheet of illustrative drawings:
:-
Fig. 1 shows a longitudinal section of a part of a railway carriage fitted with
my improved fastening apparatus, and Fig. 2 is a cross section of the same.
Fig. 3 is a section of the air cylinder and connections. Fig. 4 is a cross
section, and Fig. 5 is a plan of the same.
An air cylinder a having a piston whose rod c works in a suitable stuffing box d
is secured to the side e of a compartment of a railway vehicle and has its ends con-
nected by pipes f, g to two corresponding air pipes, i either of which may, by means
of a suitable valve or its equivalent, be placed in communication with an air pump.
train pipe or reservoir of an air brake apparatus or other convenient source of
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page_text: supply. It will thus be seen, that when either of the pipes h, i are put into com-
munication with the source of air pressure, the piston 6 is caused to travel along
the air cylinder a in a corresponding direction.
To the door of the vehicle is secured a socket m with which the piston rod or
bolt c is adapted to engage, when the said door is closed, so as to secure it in that
position until the said piston rod or bolt c is withdrawn by the air pressure acting
on the reverse side of the piston b, as will be readily understood. Instead of the
rod engaging directly with the socket m it may be connected to any ordinary
bevelled sliding bolt adapted to engage with a striking plate secured to the carriage
door.
It will be obvious that, by providing each door of a train of vehicles with a
similar fastening apparatus, and coupling the corresponding cylinder ends and air
pipes together, the whole of the doors of a train may be simultaneously secured or
released by the person in charge.
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. Fastening and unfastening the doors of railway carriages by means of a bolt
or its equivalent operated by an air piston, substantially as described.
2. A door fastening apparatus for railway vehicles comprising an. air piston
connected to a bolt, or equivalent, engaging with corresponding socket or striking
plate on the door and working in an air cylinder connected at either end to corre-
sponding air pipes adapted to be connected to air supply pipes substantially as
described.
3. The combination of parts constituting my improvements in fastenings for
railway carriage doors arranged constructed and operating substantially as
described in the foregoing Specification and illustrated in the drawings hereunto
annexed.
Dated this 6th day of July 1894.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.