Improvements in Locks.
Year: 1890

page_text: Date of Application, 8th Nov., 1890
Complete Specification Left, 24th July, 1891-Accepted, 29th Aug., 1891
Improvements in Locks.
I, LEON RAPHAEL LECELLIER of Villedicu (Manche) France, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in locks on the push and pull system, and
is illustrated in the accompanying drawings, forming part of this Specification,
wherein
Figure 1 represents an inside face view of the lock;
Figure 2 a horizontal section of the same in the locked position; and
Figure 3 a similar section in the unlocked position, the rotary latch being just
about to be shot into the catch box.
Figure 4 is an inside face view of the lock provided with tumbler levers; and
Figures 5 and 6 are horizontal sections of the same lock with the rotary latch
shot and in the unlocked and locked positions respectively.
Figures 1. 2. and 3. shew the simplest form of rim-lock, a being the lock case
within the rim of which is pivoted on a vertical axis c a springless rotary latch d
of the form shewn which works in combination with a levere which acts as a pawl
or stop by engaging with a shoulder on the latch and is operated by the pull and
push handles, as hereinafter described. The lock also has a safety bolt g
(which may or may not be acted on by a friction spring ) operated either from the
outside of the door by means of the key or from within the apartment by means
of the knobs i for the purpose of locking latch & in its shot or projected position.
The inside cover plate jis fixed to the lock case in the ordinary manner and carries
the key hole and spindle hole liners kk. The catch box is bevelled at m and the
latch is provided with a lug o adapted to strike against said bevelled part m in order
to cause the latch to make a quarter of a revolution upon its pivote for the purpose
of throwing the nose d of the latch into the box 4, the completion of this motion of
the latch being ensured by a spring n within the box / bearing against the rounded
face of the latch even though there may be considerable play between the door
and its frame.
The action of bevel mon lug o and of spring n on the rounded face p will be
readily understood by comparing Figures 3 and 2. In the closed position shewn in
Figure 2, the end of the lever e is caused by the spring to fall behind the
shoulders on the latch d so as to lock it in engagement with the box l. The latch
is disengaged and the door opened from the inside by pulling the knob (which
slides on a fixed pin t) and causing the sliding spindle u to which it is attached to
oscillate Intch lever e and disengage it from the shoulders of the latch d. The
latch is then free to be turned back within the lock case as in Figure 3,
which position it is caused to assume by the pressure of the flat side of the nose of
the latch against the box in the act of opening the door, the backward motion
being limited by lever e as shewn in Figure 3; similarly, the door is opened from
the outside by pressing on the knob on the end of spindle u. To lock the latch,
the latter is provided with a lug v and a bolt is mounted in the lock casing, said
bolt having notches a one to receive the bit of a key for throwing the bolt and the
other for the passage of lug r so that unless the last mentioned notch corresponds in
position to lug the latch cannot be retracted even should the latch lever e have
been disengaged from shoulder s. The locking bolt g is operated from the outside
by a key and from the inside of the apartment directly by the knobs i.
The lock represented in Figures 4. 5. 6. is similar except that there is no outside
knob and that the locking bolt is operated from the inside only so that when it is
thus locked the latch cannot be opened from the outside even with a key. To
g

page_text: fasten the latch from outside with the key, the tumbler levers y are lifted and a
sliding bolt is thrown by the key into engagement with a shoulder on the catch d
so as to prevent it turning.
It is to be remarked in conclusion, that only a very slight movement of the parts
is required for locking and unlocking the latch. The details of construction may
be varied without departing from the principle of the invention.
Dated this 8th day of November 1890.
L. R. LECELLIER.
By A. M. & Wm. Clark,
53, Chancery Lanc, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Locks.
I, LEON RAPHAEL LECELLIER of Villedieu (Manche) France, 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:--
My invention relates to improvements in locks on the push and pull system and
is illustrated in the drawings left with my Provisional Specification and also in the
accompanying drawing forming together therewith, part of this Specification.
Figure 1 represents an inside face view of the lock.
Figure 2 a horizontal section of the same in the locked position and
Figure 3 a similar section in the unlocked position, the rotary latch being just
about to be shot into the catch box.
Figure 4 is an inside face view of the lock provided with tumbler levers, and
Figures 5 and 6 are horizontal sections of the same lock with the rotary latch
shot and in the unlocked and locked positions respectively.
I
Figures 1, 2, and 3, shew the simplest form of rim-lock, a being the lock case
within the rim of which is pivoted on a vertical axis a springless rotary latch d
of the form shewn which works in combination with a levere which acts as a pawl
or stop by engaging with a shoulder on the latch and is operated by the pull and
push handles as hereinafter described. The lock also has a safety bolt (which
may or may not be acted on by a friction spring) operated either from the outside
of the door by means of the key or from within the apartment by means of the
knobs for the purpose of locking latch in its shot or projected position. The
inside cover plate is fixed to the lock care in the ordinary manner and carries
the key hole and spindle hole liners kk. The catch box is bevelled at in and the
latch is provided with a lug o adapted to strike against said bevelled part m in
order to cause the latch to make a quarter of a revolution upon its pivote for the
purpose of throwing the nose d of the latch into the box the completion of this
inotion of the latch being ensured by a spring a within the box / bearing against the
rounded face of the latch even though there may be considerable play between
the door and its frame.
The action of bevel m on lugo and of spring a on the rounded face will be
readily understood by comparing Figures 3 and 2. In the closed position shewn in
Figure 2 the end of the lever e is caused by the spring r to fall behind the
shoulders on the latch so as to lock it in engagement with the box l. The latch
is disengaged and the door opened from the inside by pulling the knob (which
slides on a fixed pin ) and causing the sliding spindle to which it is attached to
oscillate latch levere and di engage it from the shoulders of the latch d. The latch
is then free to be turned back within the lock ease, as in Figure 3, which position
it is caused to assume by the pressure of the flat side of the nose of the latch
against the box in the act of opening the door, the backward motion being limited
by lever e, as shewn in Figure 3. Similarly the door is opened from the outside by
"

page_text: pressing on the knob f¹ on the end of spindle ". To lock the latch the latter is
provided with a lug and a bolt is mounted in the lock casing, said bolt having
notches one to receive the bit of a key for throwing the bolt and the other for
the passage of lug e so that unless the last mentioned notch corresponds in position
to lug the latch cannot be retracted, even should the latch lever e have been
disengaged from shoulder s. The locking bolt is operated from the outside by a
key and from the inside of the apartment directly by the knobs i.
g
The lock represented in Figures 4, 5, 6, similar except that there is no outside
knob and that the locking bolt is operated from the inside only so that when it is
thus locked the latch cannot be opened from the outside even with a key. To
fasten the latch from outside with the key, the tumbler levers y are lifted and a
sliding bolt is thrown by the key into engagement with a shoulder on the catch d
so as to prevent it turning. The bit of the key engages with the n-shaped horns
of the lever e and in order to unlock the latch from the outside the key is first
turned to lift the tumbler levers y and throw back the bolt and then the key is
pulled whilst its bit is still engaged with lever e so as to draw the end of said lever
out of engagement with shoulder s.
It is to be remarked that only a very slight movement of the parts is required for
locking and unlocking the latch. The details of construction may be varied without
departing from the principle of the invention.
The modifications here referred to which relate principally to the operating knob;
to the key when it is used to operate the lock; to the locking bolt; and to the
spring of the latch, are illustrated in Figures 7, 8, and 10, Figure 7 being an interior
view of the lock with the cover plate removed and Figure a horizontal section
thereof. Figure 9 is a similar section of the same lock when operated from the
outside by a special key shewn in Figure 10.
In Figures 7 and 8 the lever a is pressed by a spring into position of engage-
ment with the latch and is provided with a tail end d having a notch e through
which passes the push and pull rod f. Said rod has a cross-pin g which bears
against the tail end of the lever and whereby on pushing the outside handle and so
applying pressure in the direction of opening the door the lever a is oscillated the
latch released a pull on the inside handle producing the same effect. By this means,
knob handles of the usual kinds may be employed.
Figure 9 illustrates the use of a key with a safety device for unlatching the lock
from the outside. Upon a stud i fixed in the lock case h are pivoted two or more
sets of levers j and & connected together, the set j being operated by the key bit in
the usual way, whilst the other set k which are operated at the same time as the
set jare perforated with a hole to give passage to a pusher pin passing through
the barrel of the key, as shewn in Figure 10, and provided or not with a retractile
spring. By giving the key a half-turn in the lock the levers are so et or arranged
that the holes in the levers k coincide and give passage to the push pin l. By then
pushing said pin by means of its head m which works within the bow of the key,
the lever a is oscillated and the lock thus opened from the outside. A pull handle
connected to the lever a operates it from the inside.
The bolt n for locking the latch from the inside has a hooked lug o which engages
the lever a, as shewn in Figures 7 and 8.
Instead of the spring in the staple or catch box previously described, I may pro-
vide a spring p on the lock case acting against a pin g fixed to the latch band
serving particularly to hold the latter in the retracted position besides assisting it
to complete its oscillation should the staple be too distant to effect this movement.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
-
1. In a pull and push latch lock, the combination, with a rotary latch, of a lever
engaging with the latch, as described, and operated by the pull and push spindle, as
crecified

page_text: 2. In a pull and push latch lock, the combination, with a rotary latch, of a lever
engaging with the latch, as described, and operating by the pull and push spindle,
and of a transversely sliding bolt operated from the inside by hand and from the
outside by a key for locking the rotary latch in its shot or projected position, as
specified.
3. In a pull and push latch lock, the combination, with a rotary latch, of a lever
engaging with the latch, as described, and operated by the pull and push spindle,
and of a longitudinally-sliding bolt engaging with the latch and controlled by
tumbler levers operated by the key, as described.
4. In a pull and push latch lock, the combination, with the rotary latch having
the lug o and rounded face p, of the striking bevel m on the catch box and the
spring n within the catch box for throwing the latch into the locked position, sub-
stantially as described.
5. The modified pull and push lock described and shewn in Figures 7 and 8
having the pull and push spindle connected to the lever by a cross-pin an internal
bolt provided with a hooked lug o embracing the edge of the lever a to lock it in
engagement with the latch and a spring p fixed in the casing and acting on a pin g
fixed on the latch, all as specified.
6. In the herein described pull and push lock, the combination of two sets of
tumbler levers, the one set having holes which, when the levers are set by the key
bit, give passage to a push pin working through the key barrel, as specified.
Dated this 24th day of July 1891.
Dated this 24th day of July 1891.
L. R. LECELLIER.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.