Improvements in certain kinds of Locks.
Year: 1897

page_text: Date of Application, 16th Oct., 1897
Complete Specification Left, 16th July, 1898-Accepted, 3rd Sept., 1898
PROVISIONAL SPECIFICATION.
Improvements in certain kinds of Locks.
I, ANDREW CASHIN, of Ivy House, Park Road, Sutton Coldfield, in the County
of Warwick, Lock Manufacturer, do hereby declare the nature of this invention
to be as follows:-
This invention has reference to what are known as draw back locks for doors
and to other one bolt locks of a like kind such for as instance as rim locks,
mortice locks, and gate locks in which the same bolt is arranged to be drawn or
moved back by the knob or handle and shot forward again by a spring to engage
with the catch plate and also to be shot forward a still farther distance by turning
the key when locking the lock.
Heretofore it has been customary for the knob to be fixed directly to the bolt
of the lock so that the bolt is withdrawn by a side push on the knob and is shot
forward again by a spring and is still further shot forward by turning the key
when locking the lock.
The object of my invention is to provide means whereby the bolt of a draw
back lock or other one bolt lock of the kind above referred to can be withdrawn
by turning the knob or handle instead of pushing the same sideways thereby
rendering the lock more convenient. My invention is applicable to the said
draw-back locks and other one bolt locks of all kinds whether they are what is
known as single hand locks or such as can be reversed and used for a right hand
door or a left hand door.
In carrying out my invention I provide in the lock case an enlarged boss or
spindle to which the knob or handle is fixed and which turns in bearings in the
lock case near the back end of the bolt. The boss or spindle has a cam or arm
which projects towards the front end of the lock and is situated between two pro-
jections formed on the back end of the bolt which is slotted to admit the boss or
spindle. The cam or arm and these two projections on the bolt are so shaped and
arranged that when the spindle or boss is turned by the knob or handle the cam
or arm acts upon one or other of the projections on the bolt and draws the bolt
back whether the knob or handle is turned to the right hand or to the left hand.
The back part of the bolt is slotted longitudinally to admit the said boss or spindle
and the said cam or arm is made of such a width that it will offer no obstruction
to the bolt being shot forward by the key when locking the lock.
When the bolt is shot forward and the lock is locked the said two projections
on the back of the bolt will be situated one above and the other below the cam or
arm so that the knob or handle will then be locked and cannot be turned. Thus
the shooting forward of the bolt by turning the key also locks the knob or handle
but when the bolt has been shot back and the lock is unlocked the said projections
will have moved away from the wide end of the cam or arm which can then be
turned by the knob or handle to draw back the bolt.
Instead of making the bolt with two projections on the underside so that the

page_text: I, ANDREW CASHIN, of Ivy House, Park Road, Sutton Coldfield, in the County
of Warwick, 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:-
This invention has reference to what are known as draw back locks for doors
and to other one bolt locks of a like kind such for instance as rim locks,
mortice locks, and gate locks in which the same bolt is arranged to be drawn or
moved back by the knob or handle and shot forward again by a spring to engage
with the catch plate and also to be shot forward a still farther distance by turning
the key when locking the lock.
Heretofore in the said locks it has been customary for the knob to be fixed
directly to the bolt of the lock so that the bolt is withdrawn by a side push on
the knob and is shot forward again by a spring and is still further shot forward
by turning the key when locking the lock.
By my invention I provide means whereby the bolt of the draw back lock or
other one bolt lock of the kind above referred to can be withdrawn by turning
the knob or handle instead of pushing the same sideways thereby rendering the
lock more convenient. Moreover, I so arrange the parts of the lock that when
the bolt is shot forward and the lock is locked the knob or handle will also be
locked and cannot be turned until the cholt has been shot back by turning the
key. My invention is applicable to draw back locks and other one bolt locks
whether they are what is known as singlehand locks or such as can be reversed
and used for a right hand door or a left hand door.
My invention is illustrated by the accompanying drawings on which Fig. 1 is
a sectional elevation of a lever mortice lock constructed according to this inven-
tion Fig. 2 is a sectional plan of the same on line X X of Fig. 1: Fig. 3 shews
the same parts as Fig. 1 but with the bolt withdrawn by turning the knob;
Fig. 4 also shows the same parts as Figs. 1 and 3 with the bolt in its locked
position and the knob spindle also locked: Fig. 5 is a front elevation plan and
end elevation of the bolt part of the lock represented by Figs. 1, 2, 3 and 4:
Fig. 6 is a front elevation and plan of the cam part of the said lock: Fig. 7 is a
sectional plan of a tumbler mortice lock constructed according to this invention:
Fig. 8 is a sectional plan of the same on line Y Y of Fig. 7 and Fig. 9 shews a
modified form of the back end of the bolt part of the lock, and Fig. 10 shews part
of my invention applied to a rim lock.
The same letters of reference indicate the same or corresponding parts in all
the figures of the drawings.
I will first describe how my invention is applied to a lever lock and I will refer
to Figs. 1, 2, 3, 4, 5 and 6. In carrying out my invention I provide in the lock
case A on the spindle B, to which the knobs or handles C¹ Cª³ 'arc fixed, a boss 1)
cam or arm will turn back the bolt when the knob or handle is turned in either
one or the other direction as above described, the said bolt may be made with only
one projection so that the said bolt can only be drawn back by turning the knob
in one direction.
Dated this 13th day of October 1897.
CHARLES BOSWORTH KEILEY
Agent for the Applicant,
cam or arm will turn back the bolt when the knob or handle is turned in either
one or the other direction as above described, the said bolt may be made with only
one projection so that the said bolt can only be drawn back by turning the knob
in one direction.
Dated this 13th day of October 1897.

page_text: which turns in bearings a² a³ in the lock case A near the back end of the bolt E.
This boss D has a cam or arm d¹ which projects towards the front end of the lock
and is situated between the two projections e¹ e formed on the back end of the
bolt E which is slotted at 3 to admit the boss D and allow of the bolt E moving
to and fro. The sides of the cam or arm dare curved outwardly as shewn
and the ends of the projections el e² are also rounded so that when. the spindle B
with the boss D is turned by the knob C¹ or C³ the cam or arm acts upon one or
other of the projections e¹ e on the bolt E and draws the bolt E back against the
action of the spring G and spring lever H whether the knob or handle is turned
to the right hand or to the left hand. This will be clear by an examination of
Fig. 3 where the cam or arm is represented as turned down and acting upon
the projection so as to draw back the bolt. It will be seen that if the knob or
handle is turned in the opposite direction so that the arm is turned upwardly
to act upon the other projection e¹ the bolt E will be similarly drawn back. The
cam or arm is made of a little less in width than is the space between the pro-
jections ele so that the cam or arm will offer no obstruction to the bolt E being
shot forward by the key when locking the lock.
It will be understood that the slot f in the levers F has to be made long enough
to admit of the usual side projection of the bolt E moving back when the bolt is
withdrawn by turning the spindle B as above described.
When the bolt E has, by the turning of the key, been shot forward to its locked
position represented by Fig. 4, the two projections ele on the back of the bolt E
will as shewn in Fig. 4 be situated one above and the other below the cam or
arm and will form stops to prevent the cam or arm and the spindle B and
the knobs or handles from turning. Thus the shooting forward of the bolt E by
the turning of the key also locks the knobs or handles but when the bolt E has
been shot back and the lock is unlocked as represented in Figs 1, 2 and 3 the pro-
jections ele will have moved back away from the end of the cam or arm d¹ which
can then be turned by the knobs or handles to draw back the bolt.
My invention is applied to tumbler locks similarly as above described with
reference to a lever lock except that instead of arranging the bolt E behind the
levers and cam or arm as shewn in Figs. 1, 2, 3 and 4, I find it more convenient
to arrange the bolt E in front of the arm & and tumbler F¹ as shewn in Figs. 7
and 8.
When my invention is applied to those rim locks which are required to have a
knob only at one side, the said knob is then secured by any convenient means to
the boss D without the spindle B. The said knob may for instance be connected
to the boss D as shewn in Fig. 10 where the foot of the knob C is screw
threaded into the boss D and is there secured by a short square section piece
which fits in the square hole in the boss D so as to prevent the knob from coming
unscrewed.
Instead of making the bolt E with the two projections shaped so that the cam
or arm will turn the bolt E when the knob or handle is turned in either direc-
tion as above described with reference to Figs. 1, 2, 3, 4, 5, 6, 7 and 8 inclusive,
one of the said projections say e may alone be shaped for the lever arm to act
upon it as shewn by Fig. 9 so that the bolt E can then only be drawn back by
turning the knob or handle and cam or arm d in the downward direction indi-
cated by Fig. 3.
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:-
In one bolt locks of the kind herein referred to in which the bolt is shot forward
by a spring and withdrawn by a knob or handle and shot forward a further dis-
tance and locked by turning the key, the combination and employment with said
bolt and its locking mechanism of a boss in the lock case adapted to be turned by
the knob or handle and made with a cam or arm projecting towards the front of

page_text: the lock said bolt having one or two projections so arranged with the cam or
arm that when the bolt has only been shot forward by the spring the bolt can
be withdrawn by the turning of the knob or handle and the cam or arm acting
on said projection of the bolt, but when the bolt has been shot forward by the
key to its locked position the projections of the bolt lock the cam or arm and the
knob or handle and prevent them from turning, substantially as herein before
described.
Dated this 15th day of Tule, 1900