Improved Apparatus for Securing Closed Doors.
Year: 1889

page_text: Date of Application, 1st July, 1889
Complete Specification Left. 25th Mar., 1890-Accepted, 28th June, 1990
PROVISIONAL SPECIFICATION.
Improved Apparatus for Securing Closed Doors.
I, HENRY ATKIN, 13 Bradley Street, Sandiacre, Derbyshire, Brickmaker, do hereby
declare the nature of this invention to be as follows:-
To the framing at the side, top, or bottom of each door, I secure a metal plate,
from the end of the plate nearest the door a slotted piece projects in which one end
of a bolt slides, the other end of the bolt has a spring coiled round it, the spring and
portion of the bolt is free to move within a tube secured to the metal plate, the spring
presses one end of the bolt outwards so as to project over the side, top or bottom of
the door when closed. A stud projecting from the bolt has two short chains or wire
cords secured to it the other ends of the chains or cords are passed round grooved
pulleys and each secured to one of two other chains or cords which pass through
thimbles secured to the framing of a railway carriage, the side framing of a road
vehicle or the walls of a room, the ends of each chain or cord being attached to one end
of a rocking lever carrying a catch which engages in the notches of a metal quadrant.
Upon the lever being pulled one way the cord to which it is attached draws the
securing bolts clear of the doors so that they may be opened, the bolts being held
clear by the catch ongaging in one of the notches in the quadrant, when the doors
are closed the catch may be released to allow the springs to project the bolts over the
doors and secure them.
When employed to secure the doors of railway carriages the cords of one carriage
are connected to the next by snap links, the rocking levers and quadrants being placed
in the guard's van.
Dated this Twantsz-ninth day of June 1889.
H. W. GOUGH, C.E.,
Agent.
Improved Apparatus for Securing Closed Doors.
I HENRY ATKIN, 13 Bradley Street, Sandiacre, Derbyshire, Brickmaker, 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 :-
DESCRIPTION OF THE DRAWINGS.
The apparatus is shown only as applied to railway carriages. Figures 1 and 2
show a side view of a railway carriage and portion of a guards van with my improved
apparatus applied thereto.
Figure 3 shows an enlarged front view of a metal plate and bolt I employ, and
Figure 4 an edge view of the same.
Figures 5, 6, and 7 show separate parts of the apparatus each severally referred to
hereafter.
At Figures 1, 2, 3 and 4, A represents the bottom of a carriage door, B the car-
riage floor, and C the framing beneath.
To the framing beneath each door of a railway carriage I secure a metal plate D,
see Figures 3 and 4, from the upper end of which a slotted piece D¹ projects in which
a bolt D' slides, beneath the bolt is a coiled spring E, the lower end of the bolt and
the spring is free to move within a tube El projecting from the plate D, shown in
cross section at Figure 5. The spring presses the inclined upper end of the bolt into
Price 21
The apparatus is shown only as applied to railway carriages. Figures 1 and 2
show a side view of a railway carriage and portion of a guards van with my improved
apparatus applied thereto.
Figure 3 shows an enlarged front view of a metal plate and bolt I employ, and
Figure 4 an edge view of the same.
Figures 5, 6, and 7 show separate parts of the apparatus each severally referred to
hereafter.
At Figures 1, 2, 3 and 4, A represents the bottom of a carriage door, B the car-
riage floor, and C the framing beneath.
To the framing beneath each door of a railway carriage I secure a metal plate D,
see Figures 3 and 4, from the upper end of which a slotted piece D¹ projects in which
a bolt D' slides, beneath the bolt is a coiled spring E, the lower end of the bolt and
the spring is free to move within a tube E projecting from the plate D, shown in
cross section at Figure 5. The spring presses the inclined upper end of the bolt into
5 Prins Gl

page_text: a recess in a striking plate E' let into the bottom of the door, and holds it secure when
closed.
A stud projecting from the bolt is provided with a grooved pulley D³ over which a
chain or wire cord F is passed, and under two other grooved pulleys D', and through
galvanized iron guide eyes G₁ screwed into the framing, a side view of one guide
eye is shown at Figure 6, one end of the chain or cord is made fast to the framing,
and the other end, after passing round a pulley G², see Figure 2, and through the
framing and floor of the carriage is secured to one end of either a rocking lever or
to a drum G³ within the guards van. The connections of the chain or cord between
the carriages may be made by means of swivelled spring links F' shown at
Figure 7.
The winding of the chain or cord on the drum draws the bolts clear of the doors so
that they may be opened. Each plate D is provided with a short chain and steel
pin D which when inserted in a hole in the piece D₁ and a hole Do in the bolt,
keeps the bolt down clear of the door whilst the compartment of the carriage is being
cleaned.
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 :-
The construction and employment of the improved apparatus for securing the
closed doors of railway carriages substantially as described and illustrated in the
Drawings annexed.
Dated this Twenty-fourth day of March 1890.