Improvements in or relating to the Closing and Securing of the Doors of Railway Passenger Carriages.
Year: 1889

page_text: Date of Application, 27th Aug., 1889
Complete Specification Left, 31st Oct., 1889--Accepted, 7th Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Closing and Securing of the
Doors of Railway Passenger Carriages.
A communication from ERNST OSKAR LEINBROCK, of Gottleuba, in the Kingdom of
Saxony, German Empire.
I, ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
M.I.M.E., do hereby declare the nature of this invention to be as follows:-
The object of this invention is to enable those in charge of the train to close all the
carriage doors in a train and to so secure them that they cannot be opened until those
in charge of the train permit it.
In carrying this invention into effect a suitable horizontal shaft or equivalent is
placed upon each vehicle, the shafts of the different vehicles being connected by
suitable couplings which shall allow of the necessary freedom of movement to the
velicles and be capable of disconnection as required.
The mechanism for closing the doors is subject to variation but one form of it may
be constructed as follows:-
Upon the horizontal shaft is for each door a worm which gears with a toothed
segment secured to the lower end of a vertical shaft which carries a horizontal and
preferably bent arm which when turned by the operation of the worm and toothed
segment closes the door. This arm by preference bears upon a piece of flat iron or
equivalent which may be bent round the vertical arm, its other end resting against and
sliding upon the door, thus securing a larger bearing than would be afforded by the
arm only.
The vertical shaft may be carried in any suitable brackets or bearings and may be
arranged to be lifted vertically so as to withdraw the toothed segment from the
worm; this may be done by means of a suitable handle or equivalent arranged to be
operated by the passengers, but, like the stop signal for a train, only to be used in
case of emergency.
The horizontal shaft may be operated in any convenient manner but preferably by
means of bevil gearing fixed in a suitable position upon the vehicle and provided with
means by which the person in charge can operate it.
The connecting mechanism between horizontal shafts of two vehicles is preferably
constructed as follows:-
At the point where the coupling is joined on to the horizontal shaft of each carriage
a universal joint or series of joints capable of movement in the various required
directions but also capable of transmitting rotary movement from shaft to shaft, is
placed, and between these is arranged a form of clutch coupling, the separate portions
of which may be kept in gear by suitable bands, arms or levers which may be spring
actuated or the fixing or locking thereof spring controlled; when the carriages are
coupled up the separate portions of the clutch engage with each other in the well
known manner, but can be separated when required. The ends of the horizontal
shafts may be squared and portions of the universal joints squarely recessed to match
them; and these can be so arranged that the coupling can dislodge itself in case of
need.
Where desired steps may be carried upon the vehicle under each door which upon
the operating of the previously described mechanism can be brought into use, either
independently of or in connection with the usual footboard; these steps may be
operated by or from the same mechanism which controls the doors, being brought
into play when the doors are released and removed when the doors are secured.
Dated thin azih da 1980

page_text: Improvements in or relating to the Closing and Securing of the
Doors of Railway Passenger Carriages.
A communication from ERNST OSKAR LEINBROOK, of Gottleuba, in the Kingdom of
Saxony, German Empire.
1, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex, M.I.M.E.,
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 object of the invention is to enable all the carriage doors in a train to be closed
from one point and to secure them against unauthorized opening when the train is in
motion.
The invention is carried into effect by means of coupled shafts a placed along the
carriages which turn arms g each of which is so placed against one carriage door that
it cannot be opened.
Upon the horizontal shaft a is a worm b for each door which gears with a toothed
segment c secured to the lower end of a vertical shaft d which may be carried in any
suitable hearings e e.
At the upper end of the shaft d is placed the arm y movable in vertical direction
and under it is bent round the shaft d the end of a flat plate f which at its other end
by means of a pin h slides in a groove in the door. The rotation of the shaft at is
effected by means of two mitre or hevit wheels one of which is on the vertical
shaft at the upper end of which is arranged a handle or a hand wheel.
To transmit the rotary movement from shaft to shaft the shafts a are connected by
means of a clutch coupling.
On the bevil wheel k by means of a universal joint i ia shaft m is fixed which
carries on its other end a toothed disc n. A similar disc n¹ is connected by means of
a universal joint i with a tube a¹. This tube a' if round is squared at its free end
but it may also be square for its entire length. This tube a' is passed over the end of
the shaft a of the next carriage and as the end of the shaft a is also square the
rotation of the one shaft a is transmitted to the other shaft a by means of the described
coupling.
Both the said toothed discs n n¹ are connected so as to be capable of being dis-
lodged by means of a ring o extending loosely round the periphery of the disc n'. On
the ring o one arm o¹ of a fork p is pivotted the prongs of which embrace the shaft m
behind the toothed disc n. On this fork p a handles is fixed which rests on the
shaft m.
To prevent the separation of the fork p from the shaft m on the latter is
placed a movable ring r which by a spiral spring z is always pressed towards the fork
in consequence of which the ring is pressed over the handle s thus securing it. In
the drawing the spring is shown extended.
To dislodge the coupling the ring r is moved towards left in the drawing com-
pressing the spring z until the handle s is free. The fork p is now turned on its pivot
by means of the handle s from the horizontal to the vertical position so as to be clear
of the shaft m and disc n and the two toothed discs n n¹ can now be taken apart.
The universal joints i enable this coupling to give in every direction and follow
the eventual middle space, between the carriages, by means of the tube a' which
slides lengthways on the shaft a.
Beneath every carriage door are the steps T suspended on the special shaft t and
brought forward when the doors are opened with the arms g and by the same
movement of the shaft a whilst they change their vertical position into an oblique one
and are ready for use.
This movement is produced in the following manner;-
Attached to the segment c is the angle plate w with a hole in its horizontal end.
One end of the rod u forms a hook which is placed in this hole while the other is at
hinged to the vertical link v.

page_text: The link is at y loosely suspended on a bolt or pivot and carries on the other end
rectangularly to it the second link v¹ also turning on a bolt or pivot and which also
turns on another bolt attached to the side of the steps T.
If the angle plate w attached to the segment c is turned the link will by means
of the rod u be brought from its vertical position into an oblique one and push
the steps T also into an oblique position with the aid of the cross link v¹.
If the hook of rod u is taken out of the hole of the angle plate w the link v
and the angle plate w are disconnected and the steps remain in the vertical position
even though the angle plate be turned. This may be needed when the train
enters a station having elevated platforms where the steps could not be brought
forward; they could be disconnected at a previous stopping point.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is;-
1. In a mechanical contrivance to effect the closing of the doors of railway
carriages from a given point the application of the arms g upon the shafts d
turned by the revolution of the shaft a by means of the worm band segment c
substantially as described and illustrated in the accompanying drawings.
2. The coupling of the shaft a consisting of two toothed discs such as n n¹ con-
nected by the universal joint with the shaft a and the combination with the
discs of the ring o placed loosely round the disc n' and by means of the fork p
reaching behind the second disc n where it is secured over the handle by the spring
controlled ring substantially as described and illustrated in the accompanying
drawings.
3. By the described arrangements the moving back of the arm g with the simul-
taneous forward movement of the step T suspended beneath the carriages by means
of the angle plate w connected with the segment c and acting through the rod u
upon the vertical link of the steps substantially as described and illustrated in the
accompanying drawings.
Dated this 21st dov of October 1889
W. P. THOMPSON & BOULT,
Agents for the Applicant.