Year: 1899

page_text: Date of Application, 5th July, 1899-Accepted, 16th Dec., 1899
I, JOSEPH STEVENSON, of 3, Agatha Street, Essendon, in the Colony of Vic-
toria, Builder, 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 my invention is to provide a cheap yet effective lock for doors
and other purposes which shall have but few parts. These, though not liable
to derangement, are of such a simple character that they can be easily assembled.
Only one bolt is used which acts for both latching and locking the door and
the key instead of throwing the bolt simply operates an eccentric. It is either
a right or a left hand lock and only a handle hole (no key hole) has to be
made through the door. The alarm is so arranged that while operating as a
latch the alarm is not rung but when the door is locked the rotating of the
handle causes the bell to ring.
But in order that my invention may be better understood I will now refer to.
the accompanying sheet of drawings which are to be taken as part of this speci-
fication and read herewith.
Figure 1 represents a perspective view shewing the interior of the lock with
one of the handles and the plates of the shell removed. The alarm operating
attachment is clearly seen. The driving key is in the keyway in the follower
and is operating the same and the door is therefore latched.
Figure 2 shews the lock in section attached to a door. The driving key is
not operating the follower and the door is therefore locked.
Figure 3 is a perspective view on a smaller scale of the key.
Figure 4 is a perspective view of the spring one end of which is attached to
the bottom of a collar. Near its middle it is forced outwardly by an eccentric
rod hereinafter described. The driving key is not protruding from the circum-
ference of the collar but is in grooves therein.
Similar letters of reference indicate similar or corresponding parts where
they occur in the several views.
My invention consists of a lock shell A right through which and also through
the door and capable of rotating therein in either direction is the hollow or
tubular spindle B. This has on either end and secured thereto the laterally
divided handles C. In the centre of the hollow spindle and capable of rotation
therein in either direction is a cylinder D (Figure 2) hereinafter called the
eccentric cylinder. This has turned upon it an eccentric portion E against
which bears the inner end of an eccentric rod H. This passes through a hole
both in the spindle and in the bottom of the collar J and its outer end bears
against the inside of a spring G. One end of this spring by a screw or rivet K
is secured to the bottom of the collar. Around the other end is the driving.
kev M through the slot F in which passes the spring. This spring is so bent

page_text: that it is always pressing the driving key centrewards which driving key is
forced outwardly by the spring actuated by an eccentric rod H in a manner
hereinafter described. The driving key travels backwards and forwards radially
in grooves situated inside the lips L of the collar J which collar is integral
with or attached to the spindle. Until the driving key M is forced outwardly
and its outer end engages in the keyway O in the follower N the bolt is not
moved: On the follower, the hole in which is, circular, the the two driving
arms which engage with the studs Q attached to the frame R of the bolt S.
From the foregoing it will be seen that when the hollow spindle B is turned
and the driving key M is in the keyway O of the follower (as shewn in Figure 1)
that the bolt is thereby withdrawable. The bolt is always maintained shot"
by the bolt spring T and the door is then latched.
4
To lock the door and to place the eccentric as shewn in Figure 2 the eccentric
cylinder D is turned inside the hollow spindle by passing through the rotating
key hole plate U the door key V. The turning of the eccentric cylinder by
the door key through the eccentric rod H and the spring G. either causes the
outer end of the driving key to be bearing against the circular hole or the key-
way in the follower or else to be pressed back clear of same. The door key, is
flat as shewn though it may be of any section. and has at its leading end two.
projections W. There are also on its sides two or more recesses or bays which
agree with wards made around the internal circumference of the ward cylin-
der X. This ward cylinder extends from the end of the eccentric cylinder to the
cap piece Y: The number, conformation and disposition of these wards in this
cylinder will vary with conditions. In the right hand knob the cylinder slown
is capable of taking a key of different shape from that shown in Fig. 3: But
one of the objects of the said cylinder which is secured internally to the hollow
spindle is to prevent the longitudinal movement of the eccentric cylinder D.
When the eccentric is in the position as shewn in Figure 2 the door is locked
since the handle rotates without moving the follower N.
"
A
נ'
As shewn in Figure 1 the follower has thereon a third arm Z. This bears
against an abutment A" on the bolt and prevents the bolt from being prised
backwardly by violent means. When however the follower is operated by the
Key protruding from the collar the third arm is partially rotated in the same
direction as the two driving arms and is thereby clear of the said abutment.
The bell attachment consists of a striking plate or ring B secured to the
hollow spindle or to one of the faces of the collar J. Upon this are the striking
arms CC which when the handle is rotated make contact with one arm of the
three armed pivotted levers D₁. These levers which are integral with each
other are situated beneath the bell spring E', above which is the bell push F¹
connected to a bell G either attached to the door or to the lock.
Across the face of the handle is placed an observation groove indicating as
to whether the driving key is in line with the keyway in the follower or not.
When the door key is in a line with this groove the position of the eccentric
is known. For operating the handle in the dark there may also be upon the
hollow spindle a flat or hole against which a pointed spring presses. When.
the eccentric cylinder reaches a certain position the spring point falls into a
hole (as in alarm and striking clock spindles) and einmits a click.".
The operation of my lock is as follows:When used as a latch the bolt 'is
normally as in all locks "shot." But, when it is desired to lock the door the
bolt is not shot" a further step as in many locks but is prevented from
being withdrawn by the third arm shewn, and also by the failure of the handle
to move the follower since the door key has been inserted in the lock and by
the turning of the eccentric has disengaged the hollow' spindle with its collar.
thereou from the said follower. The handle then rotates without in any way
affecting either the follower or the bolt. But it rings the bell and. thereby
either alarms the burglar or burglars or informs those inside that some one
desires to enter.

page_text: :
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1st. In an improved combination latch and alarm lock a hollow or tubular-
spindle passing through the said lock and capable of a complete rotary motion
in either direction all as and for the purposes herein before described and as
illustrated in the drawings.
2nd. In an improved combination latch and alarm lock a hollow: spindle
having therein a cylinder rotatable in either direction with an eccentric thereon
all as and for the purposes herein before described.
3rd. In an improved combination latch and alarm lock a hollow spindle
having therein a cylinder with an eccentric thereon turned by a door key enter-
ing the spindle ends all as and for the purposes herein before described and as
illustrated in the drawings.
4th. In an, improved combination latch and alarm lock a hollow spindle
having therein a cylinder in which (by a door key) an eccentric is turned
operating a rod, a spring, and a driving key with a slot therein said key enter-
ing a keyway inside a circular follower and by partially turning same with-
drawing the bolt all as and for the purposes herein before described and as
illustrated in the drawings.
5th. In an improved combination latch and alarm lock a hollow spindle
having therein a cylinder rotatable by a door key passing through
3
key hole
and a ward cylinder all as and for the purposes hereinbefore described and as
illustrated in the drawings.
6th. In an improved combination latch and alarm lock a circular follower
surrounding a collar secured to a hollow spindle said follower having two
driving arms and a third arm the latter preventing the prising back of the bolt
all as and for the purposes hereinbefore described and as illustrated in the
drawings.
}
7th. In an improved combination latch and alarm lock a hollow spindle
having attached thereto a striking plate or ring with arms thereon making con-
tact with one of the arms of a three armed pivotted lever and a spring operating
by a push a bell all as and for the purposes herein before described and as illus-
trated in the drawing.
8th. In an improved combination latch and alarm lock a radially travelling
driving key the inner end of which by a spring is pressed centrewards and the
outer end engages with a keyway in a follower all as and for the purposes here-
in before described and as illustrated in the drawings,
9th. In an improved combination latch and alarm lock a driving key radially
travelling in grooves inside the lips of a collar secured to a tubular spindle
said key being pressed centrewards by a spring and outwardly by the spring
and a rod operated by an eccentric situated on a rotating cylinder within a
tubular handle all as and for the purposes herein before described and as illus-
trated in the drawings.
1
10th. An improved combination latch and alarm lock consisting of a hollow
spindle an eccentric cylinder therein, an eccentric rod, a spring, a driving key
with a slot therein, a circular follower having two driving arms and a third
arm, a bolt with studs and an abutment, a striking plate with arms, a three
armed pivotted lever and a spring operating by a push a bell all as and for the
purposes hereinbefore described and as illustrated in the drawings.
.
11th. In an improved combination latch a and alarm lock a hollow spindle
having therein a cylinder in which (by a door key passing through a key hole
and a ward cylinder) an eccentric is turned operating a rod a spring, a driving
key with a slot therein said key entering a keyway inside a circular follower
(having two driving arms and a third arm) and by operating same thereby with-
drawing the bolt (having an abutment thereon and studs), and attached to said
hollow, spindle striking arms making contact with one arm of a three armed

page_text: pivotted lever operating by a spring a bell push all as and for the purposes
herein before described and as illustrated in the drawings.
12th. The whole of the combination and arrangement of parts as herein-
before described and as illustrated in the drawings and constituting my "im-
proved combination latch and alarm lock."
D
11
+
1000
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.