Improvements in Railway Carriage Door and like Fastenings.
Year: 1897

page_text: Date of Application, 22nd Nov., 1897
Complete Specification Left, 25th Nov., 1897-Accepted, 22nd Dec.,
1898
PROVISIONAL SPECIFICATION.
Improvements in Railway Carriage Door and like Fastenings.
GIUSEPPE MAZZOLINI, of 172, New Bond Street, in the County of London,
Gentleman, living on my means, do hereby declare the nature of this invention
to be as follows:
An invention by means of which all doors of railway (or other) carriages are
opened by, & only with the permission of the engine driver or the guard of the
train who can have control of the opening or closing of the doors passengers being
thereby absolutely prevented from opening the doors without the permission of
the engine driver or the guard of the train as the case may be with the object of
preventing accidents and for the better safeguard of passengers also to reduce the
labor of railway officials in opening and closing the doors, which can be opened
at both sides at the will of railway official (engine driver or guard) either auto-
matically or with a key.
The apparatus for this purpose is made and employed as follows:-
A circular brass (or other metal) box is made in two parts with rounded ends.
and contains a piston which may be moved backwards and forwards by means of
steam force, (or compressed air), the said box having at one end a protruding
bolt which by the above means may be shot or withdrawn. The said apparatus
may be enclosed in another outside square or other shaped metal box and affixed
at any point round the jamb of the door, so that the bolt may be shot into a slot
in the door, and thus govern the opening of the same, and the bolt may be with-
drawn in like manner.
The steam force to work the said apparatus to be carried from the engine by
means of tubes running from the engine to the machine on the nearest carriage
door, and so on from door to door so that the steam force may work the piston
of each apparatus simultaneously on all the carriage doors.
The machine has holes into which to introduce the tube to conduct the force,
and also the tube, to reconduct the force out of the first machine and on to the
next in succession and so on.
Dated this 22nd day of November 1897.

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
-
An invention by means of which all doors of railway carriages (or other doors)
can be opened only with the permission of the engine driver or guard of the train.
The drawing A Fig. 1 is a section of a machine which can be worked with the
aid of steam and contra-steam or compressed air and is composed of a metal
machine containing two chambers for the concentration of the force.
At points A. B. and C. D. are pipes to conduct the force and to reconduct the
force. When the force enters the machine at point A, after operating the machine
in a forward direction it passes out at point B to operate other machines, and when
the contra force enters at point C it operates the machine in a backward direction
and passes out at point D and so on.
The force thus entering the machine will operate the piston E. F. The portion
of the piston which passes outside the machine and acts as a bolt (as is shown
hereafter) is formed as shown in Fig. 2 of the drawing at point F. The points G. H.
of Fig. 1 of the drawing show the joint in the machine which has a circular piece
of asbestos between the metal.
The working of the said piston backwards and forwards will give the engine
driver or guard control over the opening of the doors in the following manner,
that is to say, when the force enters the machine at point A. Fig. 1 it causes the
piston to move forward into a hole slot or lock in the door which cannot then be
opened, and when the contra force enters the machine at point C the piston moves
in a backward direction withdraws the bolt and the door can be opened. The
machine can be placed in any position round the jamb of the door (except the hinge
side) so long as the bolt or point F of the piston can enter the door.
The steam force (or compressed air) to work the said machine can be carried
from the engine (or guards brake) by means of tubes running from the engine (or
guards brake) to the machine on the nearest carriage door, and so on from door
to door, so that the steam force, (or compressed air) may work the piston of each
machine almost simultaneously on all the carriage doors.
In Fig. 3 of the drawing is shown the machine enclosed in a metal case, and the
part of the door which will receive the bolt or lower part of the piston when it is
in action, and where it can rest until the contra-force is given.
Having now particularly described and ascertained the nature of my said inven-
tion and the manner in which the same is to be performed, I declare that what I
claim is:-
1. The communication by steam or compressed air between the engine or guards
brake and the doors of railway carriages for the control of the doors or of the
opening of the same.
2. The control of the opening of railway carriage (or other) doors by means of
steam force or compressed air by the medium of a machine as shown in the draw-
ing A, and herein before described.
GIUSETTE MAZZOLINI.