Improvements in Lock Mechanism applicable to Locks for Boxes and Sliding Bolt Locks.
Year: 1898

page_text: Date of Application, 14th Sept., 1898
Complete Specification Left, 14th June, 1899-Accepted, 15th July, 1899
PROVISIONAL SPECIFICATION.
Improvements in Lock Mechanism applicable to Locks for Boxes and
Sliding Bolt Locks.
I, JAMES RILEY, of "Hazeldene," Station Road, Bitterne, Southampton, in
the County of Southampton, Clerk, do hereby declare the nature of this inven-
tion to be as follows:-
Under this invention there is provided a simple and inexpensive lock mech-
anism of a secret nature whereby the lock cannot be unlocked or locked unless
its manipulation is understood.
The lock mechanism under my invention is applicable to locks for boxes, desks,
and to other locks in which a jaw or like device takes into a staple or hasp, or in
which a lever is employed to shoot or retract a bolt; I will however more parti-
cularly describe my invention as applied to a box, or desk lock in which double
jaws or hooks are shot into or retracted from staples on a staple-plate of the
usual form.
The case and staple-plate are of the form common to box locks.
According to my invention, inside the case and under the slots in the top
plate of the case into which the staples take I provide two vertical levers of the
first kind having jaws or hooks at their upper ends, these levers are pivoted on
pins to the back plate of the case attached to and under the top plate I provide
a bent spring the two ends of which bare against the lock levers, and keep them
in a shot or locked position with their jaws or hooks shot into their respective
staples. Pivoted on pins to the back plate, and at the lower end of the levers,
and below the normal action of the lock-key there are two eccentrics or cams
which are worked by the lock-key as hereafter described, and so retract or shoot
the locking levers from the staples, or into the staples.
Un the back plate between the locking levers there is provided a fixed guide,
and on this guide there is a slide-plate provided with a spring catch at one end,
and a pin for the lock-key at the other end. At the side of the slide-plate there
are pins or wards over which a corresponding part on the key fits.
The lock-key is provided with an inclined ward which has for its object to
release the spring catch of the sliding plate when the key is turned so that the
key-wards are in a top vertical position.
The front plate of the case is provided with the usual key-hole the top part
of which comes over the key-pin on the sliding plate.
To actuate the lock the key is inserted in the usual way, it is then turned
until its ward has a top vertical position, this action unlocks the spring catch,
and the stem of the key can now be moved down in the slot of the key-hole to
the bottom thereof in which position if turned round it will operate first one and
then the other of the eccentrics, and so move and retract or shoot the locking
levers as the case may be.
The stem of the key is reduced to enable it to pass down the slot of the key-
hole, and unless it is brought down the slot it will not when turned come in
contact with and operate the eccentrics.

page_text: It will be evident that the lock can be made with one locking lever instead
of two as described, and that the lever may actuate a sliding lock-bolt instead
of taking into a staple
Dated this 12th day of Canth 100
FREDERICK J. CHEESBROUGH, Fel. Chart. Inst. P.A.,
Grant & Maddison's Bank Buildings, Canute Road, Southampton,
Applicant's
Agent.
Improvements in Lock Mechanism applicable to Locks for Boxes and
Sliding Bolt Locks.
I, JAMES RILEY, of "Hazeldene," Station Road, Bitterne, Southampton, in
the County of Southampton, Clerk, do hereby declare the nature of this inven-
tion, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
Under this invention there is provided a simple and inexpensive lock mech-
anism of a secret nature, whereby the lock cannot be unlocked or locked unless
its manipulation is understood.
The lock mechanism under my invention is applicable to locks for boxes, desks,
and to other locks in which a jaw or like device takes into a staple, or hasp, or in
which a lever is employed to shoot or retract a bolt; I will however more parti-
cularly describe my invention as applied to a box, or desk lock in which double
jaws or hooks are shot into or retracted from staples on a staple-plate of the
usual form; reference being had to the accompanying drawings, and to the
letters and figures marked thereon which correspond with those used in the fol-
lowing explanation; like letters and figures being used to denote like parts
throughout the various views.
DESCRIPTION OF THE DRAWINGS.
Figure 1 shows an interior view of a box lock mechanism according to my
invention in a locked position in full lines, and in an unlocked position in dotted
Jines.
Figure 1 shows the lock mechanism in the position for unlocking.
Figure 2 is an end view of the lock shown in Figure 1.
Figure 3 is a front view, and Figure 1 a side view of the key pin slide plate
and guide being a detail of the lock mechanism.
Figure 5 illustrates a key suitable for ust for locking and unlocking the
mechanism.
Figure 6 shows an outside view of the lock, and form of key-hole.
With reference to the drawings A designates the case, and B the staple plate
of the lock, these are of the usual form common to box-locks.
According to my invention inside the case A and under the slots in the top
plate A of the case A into which the staples B take 1 provide two vertical
levers aa of the first kind having jaws or hooks at their upper ends, these
levers a are pivoted on pins b to the back plate of the case A, attached to
and under the top plate A¹ I provide a bent spring d the two ends d' d' of which
bare against the lock levers a al and keep them in a slot or locked position with
their jaws or hooks shot into their respective staples B¹.
Pivoted on pius ee¹ to the back plate A and at the lower end of the levers a a¹,
and below the normal action of the lock-key there are two eccentrics or
cams which are worked by the lock-key as hereafter described and so
retract or shoot the locking levers a a¹ from the staples B', or into the staples B¹.

page_text: On the back plate A2 between the locking levers a al there is provided a fixed
guide h, and on this guide there is a slide-plate i provided with a spring
catch at one end, and a pin for the lock-key at the other end. At the
side of the slide-plate there is a pin j or wards over which a corresponding
part of the key fits. The lock-key is provided with an inclined ward
which has for its object to release the spring catch of the sliding plate i when
the key is turned so that the key-wards are in a top vertical position.
The front plate A³ of the case is provided with the usual keyhole k the top part
of which comes over the key-pin on the sliding plate i." If the key after
insertion in the key-hole is simply turned round it has no action on the lock
mechanism, but to actuate the lock the key is inserted in the keyhole k in the
usual way, it is then turned until its ward has a top vertical position, this
action lifts the spring catch and unlocks the sliding plate i which now can,
with and by means of the key be moved down until the bottom of the sliding
plate comes against the stop in which position if the key is pressed in and
turned round to the right it will operate on the eccentric cam and cause it to
move back the lever a into the position shown in dotted lines in Figure 1, and
hold it there against the stop 6 and so unlock the staple B₁ with which it was
engaged. As the key is turned further round it comes against the eccentric
cam f and causes it to move back the lever a into the position shown in dotted
lines and holds it there against the stop b', on the reverse action of the key the
levers are again locked.
The stem of the key is reduced to enable it to pass down the slot of the
keyhole k, and unless it is brought down the slot from the position shown in
Figure 1 to the position shown in Figure 1ª it will not when turned come in
contact with, and operate the eccentrics.
It will be evident that the lock can be made with one locking lever instead
of two as described, and that the lever may actuate a sliding lock-bolt instead
of taking into a staple.
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-
1. A lock mechanism constructed and operating substantially as herein
described, that is to say, a mechanism comprising vertical locking levers such
as a a, eccentrics or cams such as fg, a locked sliding plate such as having a
key pin, and a key adapted to unlock the sliding plate, and be capable of being
moved down from a false into a true position for actuating the locking levers as
set forth.
2. In a lock mechanism of the type herein described the employment of a slid-
ing plate having a key pin, said plate being adapted to move from a false position
in which the key is inoperative, to a true position in which the key will operate
the mechanism substantially as described.
3. The improved lock mechanism constructed, arranged and adapted to operate
substantially as described with reference to the accompanying drawings.
Dated this 13th day of June 1899.
FREDERICK J. CHEESBROUGH, Fel. Chart. Inst. P.A.,
Grant & Maddison's Bank Buildings, Canute Road, Southampton,
Applicant's Agent.