Improvements in Locks and Latches.
Year: 1889

page_text: Date of Application, 8th May, 1889
Complete Specification Left, 8th Feb, 1890-Accepted, 5th Apr., 1890
TRUYIDIUNAL DIECIFICATION.
Improvements in Locks and Latches.
I CHARLES YOUNG of No 2 Cromwell Villas Granville Road Tunbridge Wells in
the County of Kent, Carpenter, do hereby declare the nature of this invention to be
as follows:-
This Invention has for its object Improvements in Mortice Locks and Latches
whereby I provide an easy and frictionless means for actuating the Latch bolt of a
mortice or rim lock or other form of lock or latch.
I provide the latch bolt with two levers, which by preference carry a roller or
wheel at their ends, projecting through the spindle hole at side of lock plate and is
fitted with a pin or screw.
At the other end of one of the levers I provide bearings or lugs at side of lock case
fitted with a pin or screw, the end of other lever being attached to the bolt with a pin
or screw and sliding on a roller on the underside.
I provide a reduced spindle which bears against the roller or wheel at the ends of
the levers and terminates with knobs or other suitable handles; which by pressing
against the outside or pulling from the inside of the door draws the bolt from the
catch plate and the door is opened. The handles coming in contact with the rose
or escutcheon on either side prevents all strain on the working part of the latch
bolt.
One handle or two handles may be used either on one side or both sides.
In order to complete this I provide a suitable spring that carries the bolt forward
being either an ordinary lock spring or spiral spring.
This invention is applicable to doors of dwelling houses shops banks public buildings
safes cupboards and other like purposes.
D
ليم
COMPLETE SPECIFICATION.
Improvements in Locks and Latches.
I CHARLES YOUNG of 2 Cromwell Villas Granville Road, Tunbridge Wells in the
County of Kent, Carpenter 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:
According to this invention I provide an easy means for actuating the latch bolt of
mortice or other locks of which the following is a description reference being had to
the accompanying drawings in all the figures of which the same reference letter
indicates like parts.
Figure 1 is a plan of a latch lock fitted in position in a door style shown in section.
Figure 2 is a side view of a latch lock with the front plate removed. Figure 3 is an
enlarged view of the push and pull spindle with the driver fitted thereon and Figure 4
is a plan of Figure 2.
For operating the latch bolt two levers A. B are employed. The lever A is con-
nected at one end by means of a screw or pin a with the latch bolt C and the lever B
is connected at one end by means of a screw or pin 6 with a fixed projection D upon
the lock or latch case. The opposite extremities of the levers A and B are connected
together by a screw or pin c a friction pulley E by preference being inserted between
the two levers A and B it this point. Upon this friction pulley E a driver F bears
by its projecting part d so as to separate the disconnected extremities of the levers A
and B and so operate the latch in like manner whether by pressing upon the knob or
Г Рым 61

page_text: handle G on one side of the door or by pulling the knob or handle H at the other side.
The return motion of the latch is provided for in the usual manner such as by a flat
spring J and the movement of the latch bar may be assisted by the employment of
antifriction rollers such as e f
The driver F engages in a square hole K made in the lock so as to keep the projec-
tion d always in proper working position while the spindle L, which may have the
knobs or handles screwed on or secured thereto in any convenient way, passes freely
through the driver in such a manner that the knobs or handles of the door latch may
be rotated without in any way interfering with the mechanism which requires a push
or pull motion for its operation.
It is obvious that this construction is applicable for the use of one handle or knob at
one side only of a door either to be pushed or pulled or for the use of two handles one
at each side of the door as shown in the accompanying drawings in which case pushing
at the one or pulling at the other will have a like effect in putting the mechanism in
motion.
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. In latches or locks of which the latch bolt is operated by push and pull or
push or pull knobs the employment of the levers A B connected one with the
latch bolt and the other with some immovable portion of the lock to operate the
latch bolt by pressure upon the connected ends of these levers substantially as
described
2 In latches or locks of which the latch bolt is operated by push and pull or
push or pull knobs the combination of the levers A B, the friction pulloy E and
the driver F for operating the latch bolt substantially as described.
Dated this 8th day of February 1890
AYRTON & THOMAS,
Agents for the Applicant