Improvements in Safety Locks for Railway Carriage and other Doors.
Year: 1891

page_text: Date of Application, 19th Mar., 1891
Complete Specification Left, 18th Dec., 1891-Accepted, 23rd Jan.. 1892
PROVISIONAL SPECIFICATION.
Improvements in Safety Locks for Railway Carriage and
other Doors.
I JOSEPH KAYE, of the firm of Joseph Kaye and Sons Limited, South
Accommodation Road, Leeds, in the County of York, Lock Manufacturers, do
hereby declare the nature of this invention to be as follows:-
This invention relates to certain improvements in railway locks and the like,
whereby the tight wedging of the door on closing is insured.
In ordinary railway locks the position of the handle represents the position of
the tongue, that is to say, if the handle is vertical, the tongue is also in that
position, but the handle may be horizontal and the tongue horizontal, but the door
not fast.
A further departure has been made so that when the door is shut close, the tip
of the tongue enters the striking plate and holds the door in that position, when a
further turn by hand secures the tight wedging of the door.
In my improvement the closing of the door ensures the wedging fast of the same
automatically at one operation and in the following manner. I surround the
spindle to which the handle is secured with a coiled spring, which en opening the
door has its full tension: on closing the door the tension is relieved and the tongue
is shot square into the striking plate. I effect this operation by means similar to
those set forth in my Specification number 10,530 dated July 20th 1888, that is to
say, by means of a detent or catch, the tongue is held in the open position: on
closing the door the catch is relieved and the tension of the spring operates the
door in the way indicated.
The mechanism relieving the detent or catch and the tip of the tongue both
project beyond the face plate, and in the act of closing the door they are brought
in contact with an inclined plane on the striking plate in the following order, the
tongue first, then the mechanism which relieves the detent. In the act of opening
the door, the tongue leaves the inclined plane on the striking plate last, thus
making it impossible for the handle to be in the fast position when the door is
not fast.
By the before mentioned projections beyond the face plate, the wear and tear of
the mechanism of the lock is relieved, both in the operation of opening and shutting
the door, thus giving a longer life to locks so constructed.
Dated this 18th day of March 1891
JOHN WAUGH,
Agent.
COMPLETE SPECIFICATION.
Improvements in Safety Locks for Railway Carriage and
other Doors.
I, JOSEPH KAYE, of the firm of Joseph Kaye and Sons, Limited, of South
Accommodation Road, Leeds, in the County of York,. Lock Manufacturers, 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 relates to certain improvements in railway locks and the like,
whereby the tight wedging of the door on closing is ensured.

page_text: In ordinary railway locks, the position of the handle represents the position of
the tongue, that is to say, if the handle is vertical, the tongue is also in that
position, but the handle may be horizontal and the tongue horizontal, but the door
not fast.
A further departure has been made so that, when the door is shut close, the tip
of the tongue enters the striking plate and holds the door in that position when a
further turn by hand secures the tight wedging of the door.
In my improvement the closing of the door ensures the wedging fast of the same
automatically at one operation in the manner as hereinafter described, reference
being made to the accompanying drawings, in which
Fig. 1. represents an elevation showing the interior of a lock made according to
my invention.
Fig. 2. is a similar view showing the tongue protruding beyond the flange, in the
position it will occupy when the door is closed and the tongue engaging with the
striking plate.
Fig. 3. a view of the striking plate.
Fig. 4. a plan of the lock, and
Fig. 5. a view of the tongue detached from the lock.
The handle for operating the tongue A. may be such, as is now commonly used
ou railway carriage doors and is prepared with a square spindle for insertion in the
hole B. passing through the circular bearings C. of tongue A. which are mounted
in the lock casing plates D. thereby supporting the tongue A.
Around the longer circular bearing C. is secured a coiled spring E. which, on
opening the door, increases the tension on the former, but on closing the door the
tension is relieved and the tongue A. shot into the hole F. of striking plate G.
I accomplish this operation by means similar to those set forth in my Specifica-
tion numbered 10530 of 1888 that is to say, by means of a detent or catch H. and
lever J. the tongue A. is held in the position shown by Fig. 1. when the door is
open, but on closing the same, the end of the lever J. protruding beyond the face
of lock flange D¹ coming in contact with the striking plate G. causes the opposite
end of said lever to be operated in the direction of the arrow a sufficient distance
to be clear of the detent or catch H. thus liberating the tongue A. and allowing
the tension of the coiled spring E. to move the tongue into the position shown by
Fig. 2. and thus engage with the taper hole F. in striking plate G. thereby securing
and wedging the door tight when closed, part of the tongue A. protruding beyond
the face of flange D' being made wedge shaped in order that it may more easily
enter the taper hole F. in striking plate.
The end of the lever J. by which it is operated in the manner as before described
and the tip of the tongue A. both project beyond the face of the lock flange D¹
and in the act of closing are both brought in contact with inclined planes on the
striking plate G in the following order; the tip of the tongue A. first by which
it is forced backwards and the friction between the tongue and lever J. removed,
then the end of said lever by which it is freely operated clear of the tongue.
In the act of opening the door, the tip of the tongue A. leaves the inclined plane
of striking plate G. last, and by means of compressed spiral spring S. and bar R.
the end of lever J. is ensured to engage with the detent or catch H. and retain the
tongue A. in the position as shown by Fig. 1. thus making it impossible for the
handle to be in the fast position when the door is not fast.
By the lever J. and tongue A. protruding beyond the face of flange D' the wear
and tear of the mechanism of the lock is relieved both in the operation of opening
and shutting the door, thus giving a longer life to locks so constructed.
Having now particularly described and ascertained the nature of this inven
tion, and in what manner the same is to be performed, I declare that what I'
claim is:
-
In a lock the combination of a coiled spring E. and a tongue A. having a detent

page_text: or catch H. formed therein with a lever J. all constructed and operated substantially
in the manner as shown and described and for the purpose as hereinbefore set
forth.
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1
1
1001
JOHN WAUGH,
Agent.