Improvements in the Construction of Locks and Keys for Fastening Doors and the like.
Year: 1887

page_text: Date of Application, 10th Dec., 1887
Complete Specification Left, 10th Sept., 1888
Complete Specification Accepted, 10th Dec., 1888
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Locks and Keys for Fastening
Doors and the like.
I, JOSEPH KAYE, of Bank House, Kirkstall, Leeds, in the County of York, Lock
Manufacturer, do hereby declare the nature of this invention to be as follows:-
The object of this invention is the construction of locks to fasten automatically, the
same as if locked by a key, whichever way the door, window shutter or the like is
closed; and to be opened by a key from either side, but when needed by separate key
holes not in a straight line with each other through the door or the like; and when
used as a right latch, the levers to be lifted, the bolt drawn, and the door opened by a
handle at one side, or by a key from the opposite side; and to construct the key in
two parts for the purpose of facilitating the accurate warding.
I accomplish my object in the following manner: The lock may be made on what
is known as the flush, rim, or mortice principle, and on the face of the lock as the
edge of the door, is a projecting piece which extends for some distance inside the
lock case.
The lock bolt is held in by a hook or catch, which resists the pressure of
a spring set for the purpose of pushing out the lock bolt when the said hook or catch
is released.
When the door or the like is closed, the projecting piece is driven in by coming in
contact with the striking plate, and thereby releases the hook or catch from the bolt,
allowing the spring to push out the lock bolt, which is fastened out as securely as an
ordinary lock bolt when locked by a key. The lock bolt is withdrawn by a key for
allowing the door to be opened, when the hook or catch falls into a recess, and holds
it until released by the projecting piece being again pressed in.
The lock is so constructed that, by a handle at one side it is operated and the door
opened, as well as by a key which is made in two parts, in order to facilitate the
correct warding of the operating part of the key; the part which operates the lock
being inserted into the shank of the key handle by a socket, and therein fastened in
any suitable manner.
Dated this 9th day of December 1887.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Locks and Keys for Fastening
Doors and the like.
I, JOSEPH KAYE, of Bank House, Kirkstall, Leeds, in the County of York, Lock
Manufacturer, 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 the construction of locks to fasten automatically,
the same as if locked by a key, whichever way the door, window shutter, or the like
is closed and to be opened by a key from either side, but when needed by separate key
holes not in a straight line with each other through the door or the like: and when
used as a night latch, the levers to be lifted, the bolt drawn, and the door opened by a
handle at one side, or by a key from the opposite side; and to construct the key in
two parts for the purpose of facilitating the acurate warding.
I accomplish my object in the following manner:
The lock may be made on what is known as the flush, rim, or mortice principle, and
on the face of the lock at the edge of the door, is a projecting piece which extends
for some distance inside the lock case. The lock bolt is held in by a hook or catch,
which resists the pressure of a spring set for the purpose of pushing out the lock
bolt when the said hook or catch is released.
When the door or the like is closed, the projecting piece is driven in by coming in
contact with the striking plate, and thereby releases the hook or catch from the bolt,
allowing the spring to push out the lock bolt, which is fastened out as securely as an
ordinary lock bolt when locked by a key. The lock bolt is withdrawn by a key for
allowing the door to be opened, when the hook or catch falls into a recess, and holds
it until released by the projecting piece being again pressed in.
The lock is so constructed that, by a handle at one side it may be operated and the
door opened, as well as by a key which is made in two parts, in order to facilitate the
correct warding of the operating part of the key, and thereby to increase the
efficiency of the lock; the part which operates the lock being inserted into a
socket formed in the shank of the key handle and therein fastened in any
suitable mauner.
In order that my invention may be more readily understood, reference is made to
the accompanying drawings in which similar letters indicate similar parts.
Fig. 1. represents a view of my improved lock with the front plate removed, and
with a key hole to both sides, but not opposite to each other; the lock bolt being
shown within the lock.
Fig. 2. is a similar view with the lock bolt shot out.
Fig. 3. is a section through line Y Z

page_text: Fig. 4. is a view of my improved lock in which the door is unsecured by a
handle inside, and by a key from outside the door, and is most suitable for a
night latch.
Fig. 5. is a lock of the same construction with the lock bolt shot out, and-
Fig. 6. is a plan view of a lock, a portion being cut away.
The lock casing is indicated by the letter A. and in Fig. 1. the bolt B. is shewn
projecting outwards from the face of the lock, the said bolt terminating at its rear
end in a round head C. which is in touch with one arm of a bell crank lever D. the
lever being held in contact with the said bolt by a spiral spring E. a book being
formed on the other arm at F. The lock bolt G. is guided in its path by passing
through the face plate H. of casing, and by the pins I. and J. passing through
corresponding slots K. and M. in the said lock bolt.
The lock may be formed with a separate key hole on each side, so as not to be
opposite each other, the key hole on one side being indicated by the letter N.
the pin O. being for the key inserted through the hole from the other side of
the lock, or the lock may be made with one key hole passing straight through
as in an ordinary lock.
In this figure the lever of the lock is removed.
Fig. 2. is a similar view of the lock with the lock bolt G. shot out, showing the
spiral spring P. which actuates the lock bolt when released as hereinafter described,
and also the lever Q centered on pin J.
On closing the door, shutter, or the like, the projecting portion of bolt B. comes in
contact with the striking plate R. causing it to slide inwardly, and by the round-
head C. of the said bolt pressing against one arm of bell crank lever D. the latter
is operated such a distance that the hook F. is raised clear of the lock bolt G.
thereby liberating the same, which is shot out by the compressed spiral spring P. In
order to unlock the door, shutter, or the like, the key is used in the ordinary way for
opening a lock, the lever Q. being lifted by the key from the recess S. in the lock
bolt G. the key also traversing the lock bolt G. back the necessary distance for
the hooked end F. of bell crank lever D. to fall into position for holding the
said bolt.
The portion of the bolt B. projecting through the face plate H. may be formed
V shaped, and is thus suitable for a "right" or "left" hand lock, the striking plate R,
being made to suit.
In Figs. 4. and 5. the mechanism is much the same as in Figs. 1. and 2. with the
exception of the arrangements by which the door is opened, say from the inside by
handle, and from the outside by a key.
2L
The boss through which the square of the spindle of the handle is passed, is
indicated by T. and on this boss is a cam U. which when the handle is turned in the
direction of the arrow, operates upon an intermediary lever V. which presses upon
the end of lever Q. at W. the lever Q. being centred at a. and by the intermediary
lever acting as described; the other end of lever Q. is lifted from the recess S,
and on further turning the said handle in the direction of the arrow, the cam U.
comes against the projection X. formed on the lock bolt G. and withdraws the same
as described in reference to Fig. 1. the door being then free for opening.
My improved key is by preference made in two parts somewhat as shown by Figs. 7.
and S. the portion L. which is inserted and operates the lock, being threaded and
screwed into a socket S¹ formed in the sbank, or spindle of the key handle, and
fastened therein by a pin or other suitable means.
By constructing keys in the manner described, grooves such as are at G¹ may
be cut on each side the key accurately and radially with the centre of the key
shank, or spindle, as shown by Fig. 9. so as to exactly fit the wards placed in
different positions in the lock casing, by which means a greater diversity in the
warding of keys may be obtained by reason of the small amount of clearance
required for the wards in consequence of the grooves being curved radially from
the centre of the keys rotation, instead of being cut at right angles to the sides of
the plate L. as is now the usual practice.

page_text: 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 :-
1. The combination of the bolt B. with bell crank lover D. lock bolt G. and
lever Q. whereby on closing a door or the like, fitted with my improved lock, the
same is automatically locked or secured.
2. The combination of the bolt B. bell crank lever D. lock bolt G. intermediary
lever V. and lever Q. with the cam U. substantially in the manner and for the purpose
herein before set forth.
3. The construction of keys having curved ward spaces or grooves cut radially with 1
the centre of the key stem or spindle.
Date 11: oil.
Ր
1
1000