Improvements in Means for Locking or Fastening the Doors of Railway Carriages and the like.
Year: 1897

page_text: Date of Application, 7th July, 1897
Complete Specification Left, 11th Feb., 1898--Accepted, 9th Apr., 1898°
PROVISIONAL SPECIFICATION.
Improvements in Means for Locking or Fastening the Doors of
Railway Carriages and the like.
THOMAS EDMUND EDLINGTON, 107, Lea Road, Gainsborough, Lincolnshire,
Engineer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to make possible a means, so that the locking or
fastening of the doors of railway carriages, and the like, can be placed under the con-
trol of the guard or the engine driver attendant, and can be unlocked or unfastened
instantaneously at the will of either. The drawing shows a longitudinal section
of a lock for the aforesaid purpose: the lock is securely fastened in the frame of
the door by means of bolts I, I, and is made to work by pressure which may be
either steam, hydraulic, or compressed air. The action is as follows. When the
pressure is applied through the pipe or tube A, and brought to bear on the dia-
phragm E, which also forms an air-tight joint, and being made of a flexible
substance, preferably india rubber, it moves in a forward direction in chamber N,
and forces the bolt in the direction indicated by the arrow into socket L, which is
securely fastened by means of screws M,, M in the edge of the door, and thus, the
door is securely locked. H is a spring so that when the pressure has been turned
off the door is unlocked by the spring forcing the bolt back to its original position.
J is a pin screwed into bolt F, this is in event if the spring should break at any
time, and being made with a square head projecting through the sleeve, a key
can be fitted on and the bolt drawn back, thus unlocking the door by hand after the
pressure has been turned off. N is a chamber in which diaphragm E moves either
backwards or forward. K, K, are two small holes drilled in portion of casing G,
so as to allow free escape of air when the pressure is applied. B is a cap screwed
on portion of casing D, and together with a rubber washer C, form an air-tight
joint. D is a portion of casing, part of the inside is made of a concave form, so
as to form a portion of chamber N. G is a portion of casing, part of the inside
is made of a concave form, and being made to screw into portion D, forms the
chamber N, this portion of casing is made with a sleeve, the inside of which bolt F
moves, and spring H, performs its works as previously described.
1
1907

page_text: COLLETIN DIECIFICATION.
Improvements in Means for Locking or Fastening the Doors of
Railway Carriages and the like.
I, THOMAS EDMUND EDLINGTON, 107, Lea Road, Gainsborough, Lincolnshire,
Agricultural Implement 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 object of this invention is to make possible a means so that the locking
or fastening of the doors of railway carriages and the like can be placed under the
control of the guard or engine driver attendant, and can be unlocked or unfastened
instantaneously by either.
Referring to the drawings filed with my Provisional Application.
Figure 1 is a longitudinal section of a lock for the aforesaid purpose.
The lock is securely fastened in the frame of the door by means of bolts I, I, and
is made to work by, a pressure which may be either steam, hydraulic, or com-
pressed air. The action is as follows: when the pressure is applied through the
pipe er tube A and brought to bear on the diaphragm E which also forms an air-
tight joint, and being made of a flexible substance, preferably indiarubber it moves
in a forward direction in chamber N and forces the bolt F in the direction indi-
cated by the arrow into socket L which is securely fastened by means of
screws M, M, in the edge of the door, and thus the door is securely locked. His
a spring so that when the pressure has been turned off the door is unlocked by the
spring H forcing the bolt back to its original position. J is a pin screwed into
bolt F; this is in event if the spring should break at any time, and being made
with a square head projecting through the sleeve a key can be fitted on and the
bolt drawn back, thus unlocking the door by hand after the pressure has been
turned off. N is a chamber in which diaphragm E can be made to move either
backward or forward. K, K, are two small holes drilled in portion of casing G
so as to allow free escape of air when the pressure is applied. B is a cap screwed
on portion of casing D) and together with a rubber washer C form an airtight joint.
D is a portion of casing; part of the inside is made of a concave form so as to form
a portion of chamber N. G is a portion of casing; part of the inside is made of a
concave form and being made to screw into portion D forms the chamber N.
This portion of casing is made with a sleeve, the inside of which bolt F moves,
and spring H performs its work as previously described.
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. The combined construction and arrangement of the various parts substantially
as described and illustrated herein.
2. In means for locking doors of railway carriages and such like a flexible
diaphragm carried in a suitable chamber and attached to or operating a locking
bolt; said operation being performed by the compression of air, steam, or hydraulic
pressure upon one side of the flexible diaphragm aforesaid; a spring for con-
trolling the bolt and causing it to return to the required initial position when the
pressure is removed.
Dated this 11th day of Thali
1000