IMPROVEMENTS IN LOCKS
Year: 1881

page_text: LETTERS PATENT to John Jackson, the younger, and Charles Sheekey, both
of 40, Great Smith Street, Westminster, in the County of Middlesex,
Engineers, for an Invention of "IMPROVEMENTS IN LOCKS."
PROVISIONAL SPECIFICATION left by the said John Jackson, the younger,
and Charles Sheekey at the Office of the Commissioners of Patents on the
26th October 1881.
JOHN JACKSON, the younger, and CHARLES SHEEKEY, both of 40, Great Smith
Street, Westminster, in the County of Middlesex, Engineers. "IMPROVEMENTS IN
Locks."
Our Invention has reference to locks of the kind commonly called letter or
keyless locks, and is applicable to padlocks, bottle locks, trunk locks, hand bag
locks, mortice locks, and other locks.
The objects of our Invention are the production of simple keyless locks (with or
without springs), and upon a series of projecting arms or lugs being placed to a
given mark, letter, or (by preference) figures, the locks may be locked or unlocked
as desired.
The means whereby we carry out our said Invention and the various adaptations
thereof are as follows:-
We construct a padlock in the following manner:-Two plates form the back
and front of suitable shape, by preference circular; these plates we secure together
by three separate side pieces, upon which we formn projecting lugs to fit through
holes in the said two plates, together forming a case. Two of these side pieces we
form are shaped to fit the circumference of the said plates, and we secure such side
pieces one upon each side of the said plates. The lower ends of these side pieces
we leave a certain distance apart, generally about one fourth of the circumference
of the case, thus forming an opening, and between the upper ends of such side
pieces we secure the third side piece or upper piece which we form U shaped.
We secure this U shaped piece a certain distance apart from each of the arc shaped
side pieces to allow the shackle to be operated therein. A piece of round, square,
or other suitably shaped metallic rod made to about the segment of five sixths of a
circle forms the shackle; we place this shackle between the two are shaped side
pieces with the U shaped or upper side piece placed within its inner segment or
broken circle. To the inner side of the right hand side piece near the opening at
the base we affix the lower end of a flat curved spring, the upper end of which we
turn down in the form of an L under the centre line of the Ushaped or other side

page_text: piece. Upon the upper side of this flat spring we secure an arch shaped flat back,
one end of which projects over the turned down end of the spring. Within the
said case wo pivot upon a pin which passes through its centre three (more or less)
flat plates or discs with serrations on their outer edges; upon the said plates we form
arms or lugs. These arms project through the opening at the base of the case, and
indicate or point to a mark, letters, or figures stamped upon the outer surface of
the front plate. While the projecting arins or lugs are pointing to the desired
marks, letters, or figures, we make a gap or saw cut from the outer edge into a
drilled hole, and we make this saw cut opposite the L or turned down end of the
spring; thus when the shackle is rotated or twisted in either direction its end
presses upon the arched back of the spring and forces the L or turned down end
down the saw cut into the holes in the internal plates. The continual twisting or
rotating of the shackle exposes the opening in the circumference, and this enables
the operator to affix or remove the padlock from its fastening. When the shackle
is turned or twisted until its gap or opening is hidden within the case of the lock
the spring raises its arched back, and at the same time lifts its L or turned down
end out of the gaps or saw cuts in the internal plates, the position of which being
thus altered prevents the shackle from being turned or twisted, as the L or turned
down end of the spring rests upon the edges of the internal plates over the centre
line of the pin, thus locking the shackle until the projecting arms or lugs are
placed at the prearranged marks, letters, or figures, when the shackle can be
unlocked, as described.
.
We construct a trunk lock in the following manner :-Two plates form the back
and front, the back plate having holes near its edge for securing it to the trunk.
The front plate we form by preference circular. These plates we secure together
by two side pieces, upon which wo form projecting lugs to pass through suitable
holes in the front plate, thus together forming a case; these two sido pieces we
form arc shaped to match the circumference of the upper plate, and we attach
them one upon the right side and the other upon the left with their lower ends a
certain distance apart, about one sixth of the circumference of the upper plate.
The upper ends of those said side pieces we leave a certain distance apart to allow
n suitable hasp to pass between them. Within the case we pivot upon a piu which
we form in the centre of the bottom plate three (more or less) plates or discs
having serrated outer edges, upon which we formn arms or lugs; these arms project
through the opening in the base of the case for a similar purpose to that specified
with respect to the padlock, but instead of cutting a slot or gap for the reception
of a spring, we in this lock cut a slot or gap from. the outer edge of the internal
plates into a segment of a circle of the said plates; thus when the hasp to which
we form a suitable fastening plate passes between the two side picces down the
gap or slot into the cut away segment of the internal plates, an alteration of the
position of the said plates causes the curved arms formed by the cutting of the
internal segments to pass through the hasp which remains locked until the said
gaps are placed in the prearranged position.
A hand bag lock we construct in the following manner:-Upon the inner side
of the flat jaw of the bag frame we affix horizontally two (more or less), or by
preference two ordinary hasps. Opposite and upon the inner sido of the other jaw
of the bag frame we affix an oblong case with suitable inlets to receive the hasps;
upon the bottom side of the said case we form a pin standing perpendicularly in
the centre of the case. Around this pin we pass a coiled wire spring, and we
operate upon this pin a flat shaped piece with a hole through its centre to receive
the pin. Upon each end of this flat shaped piece we form a wedge shaped catch
or grip with the thin ends facing the upper side of the case and opposite the inlets
to receive the hasps upon the upper side of the said flat piece we form a fork
shaped piece, the upper part of which operates as a press button through the upper
side of the case and rim of the jaw. Upon the upper side of the rim of the jaw
we secure a flat plate with a suitable hole formed through it to receive the press
button or upper part of the fork shaped piece. Near to this hole, upon both, or by

page_text: preference one side, we form the base of a suitable trough or case in which we
operate three (more or less) circular shaped discs upon a centre pin which we
secure to each end of the trough. Between the base of the said trough and the
said hole we cut a slot or grooved passage in which we operate a wire rod, one end
of which we secure to the press button, and the other end extends underneath the
circular shaped discs. We cut cut of these circular shaped discs a gap and segment
with serrations upon its inner and outer edge, as described, with respect to the
trunk lock. We pass a pin through the said cut out segments in the discs to
prevent the exposure of the gaps when operated, and we place our marks, letters,
or (by preference) figures upon the outer and upper edges of the said circular
discs; thus when the jaws of the bag frame are closed together the hasps are held
by the wedge shaped catches, which when the prearranged marks upon the discs
are placed so that the gaps in the said circular discs are in a line opposite the said
rod it rises by the pressure of the said coiled spring up the gaps into the segments
of the said circular dises. By changing the position of the discs the extending rod
is held within the cut out segment, thus locking the jaws together, as the press
button cannot be pressed down to release the hasps until the said dises are moved
to the prearranged position. When the extending rod is not within the segments
of the discs it operates between the outer edge of the said discs and the upper side
of the jaw rim, thus enabling the press button to be operated as a catch only. To
make the lock more secure we form a trough with discs, and an extending rod or
arm upon each side of the press button, and construct and operate as above
described.
We construct bottle locks in the following manner:-We take three or four
inches of tube (by preference metallic tube), near the centre of which we form by
pressure an internal ring. In the upper part of this tube we place a conical plug
or stopper, the conical part whereof we form of flexible rubber, cork, or other
suitable material, and we fit this conical plug so that it will slide up and down in
the upper part of the metal tube and not pass the indented ring. Behind the said
conical plug we place a coiled wire spring, which we keep in its place by securing a
top or disc over the opening at the upper end of the said tube. Near to the lower
end of the said metal tube we affix within the interior a coiled flat spring, the
ends of which we turn out at right angles, and we cut away half of the said
spring near its angled ends, so that we can wrap one part over the other and
project the ends through a suitable outlet in the tube. Thus when the two
projecting ends of the spring are pressed towards each other, it allows the metal
tube to be placed over the neck of a bottle until the conical plug is pressed back
by the mouth of the bottle, when upon releasing the projecting ends of the spring,
the sides of which grip the sides of the neck of the bottle, and the upper edges of
the spring lodge under the rim of the bottle, which causes the coiled wire spring
to force the conical plug tightly into the mouth of the bottle. To lock the metal
tube in the position described we affix one of our small padlocks as described, with
the sides of their U shaped or upper piece extended with holes formed near the
ends of the extended sides, to enable the shackle to be passed through. We place
these extended side pieces between the two projecting ends of the spring, which
projecting ends have corresponding holes through them, and which enables the
shackle to be operated and locked while through the extended sides of the
Ushaped piece, and the said projecting ends of the spring thus preventing the
compression of the projecting ends and removal of the stopper from the bottle
(until the padlock is unlocked as before described).
Mortice locks are constructed somewhat similar to the trunk locks herein before
described, the variation required being the formation and extension of projecting
pins from the internal plates through a cut out segment or segments in the upper
front plate, so that they may indicate when the lock is flush or level with the sides
of its fastoning.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and
of an Order of the Lord Chancellor, filed by the said John Jackson, the
younger, and Charles Sheckey in the Great Seal Patent Office on the 5th May
1882.
JOHN JACKSON, the younger, and CHARLES SHEEKEY, both of 40, Great Smith
Street, Westminster, in the County of Middlesex, Engineers. "IMPROVEMENTS IN
Locks."
Our Invention has reference to locks of the kind commonly called letter or
keyless locks, and is applicable to padlocks, bottle locks, trunk locks, hand bag
locks, mortise locks, and other locks.
The objects of our Invention are the production of simplo keyless locks (with or
without springs), and upon a series of projecting arms or lugs being placed to a
given mark, letter, or (by preference) figures, the locks may be locked or unlocked
as desired.
The means whereby we carry out our said Invention and the adaptations thereof
are as follows: We construct a padlock in the following manner. Two plates
form the back and front of suitable shape, by preference circular; these plates wo
secure together by three separate side pieces, upon which we form projecting lugs
to fit through holes in the said two plates, together forming a case. Two of these
side pieces we form are shaped to fit the circumference of the said plates, and we
secure such side pieces one upon each side of the said plates. The lower ends of these
side pieces we leave a certain distance apart, generally about one fourth of the
circumference of the case, thus forming an opening, and between the upper ends
of such side pieces we secure the third side piece or upper piece, which we form
Ushaped. We secure this U shaped piece a certain distance apart from each of
the arc shaped side pieces to allow the shackle to be operated therein. A piece of
round, square, or other suitably shaped metallic rod, made to about the segment of
five sixths of a circle, forms the shackle. We place this shackle between the two
arc-shaped side pieces, with the U shaped or upper side pieces placed within its
inner segment or broken circle. To the inner side of the right hand side piece
near the opening at the base we affix the lower end of a flat curved spring, the
upper end of which wo turn down in the form of an L under the contro line of the
Ushaped or upper side piece. Upon the upper side of this flat spring we secure
an arch shaped flat back, one end of which projects over the turned down end of
the spring. Within the said case we pivot upon a pin which passes through its
centre, three (more or less) flat plates or discs with serrations on their outer
edges; upon the said plates we form arms or lugs. These arms project through
the opening at the base of the case and indicate or point to a mark, letters, or
figures stamped upon the outer surface of the front plate. While the projecting
arms or lugs of the internal plates are pointing to the desired marks, letters, or
figures, we make a gap or saw cut from the outer edge into a drilled hole, and we
make this saw cut opposite the L or turned down end of the spring. Thus when
the shackle is rotated or twisted in either direction its end presses upon the arched
back of the spring and forces the L or turned down end down the saw cut into
the holes in the internal plates. The continual twisting or rotating of the shackle
exposes the opening in the circumference, and this enables the operator to affix or
remove the padlock from its fastening. When the shacklo is turned or twisted
until its gap or opening is hidden within the case of the lock, the spring raises its
arched back, and at the same time lifts its L or turned down end out of the gaps
or saw cuts in the internal plates, the position of which being thus altered prevents
the shackle from being turned or twisted as the L or turned down end of the
spring rests upon the edges of the internal plates over the centre line of the pin,
thus locking the shackle until the projecting arms or lugs are placed at the

page_text: prearranged marks, letters, or figures, when the shackle can be unlocked as
described.
We construct a trunk lock in the following manner:-Two plates form the
back and front, the back plate having holes near its edge for securing it to the
trunk. The front plate we form by preference circular. These plates we secure
together by two side pieces, upon which we form projecting lugs to pass through
suitable holes in the front plate, thus together forming a case; these two side
pieces we form are shaped to match the circumference of the upper plate, and we
attach them one upon the right side and the other upon the left, with their lower
ends a certain distance apart, about one sixth of the circumference of the upper
plate. The upper ends of these side pieces we leave a certain distance apart to
allow a suitable hasp to pass between them.
Within the case we pivot upon a pin
which we form in the centre of the bottom plate three (more or less) plates or
discs having serrated outer edges upon which we form arms or lugs; these arms
project through the opening in the base of the case for a similar purpose to that
specified with respect to the padlock, but instead of cutting a slot or gap for the
reception of a spring, we in this lock cut a slot or gap from the outer edge of the
internal plates into a segment of a circle of the said plates. Thus when the hasp
to which we form a suitable fastening plate passes between the two side pieces
down the gap or slot into the cut away segment of the internal plates, an alteration
of the position of the said plates causes the curved arms formed by the cutting of
the internal segments, gaps, or slots to pass through the hasp, which remains
locked until the said gaps are placed in the prearranged position.
A band bag lock we construct in the following manner:-Upon the inner side
of the flat jaw of the bag frame we affix horizontally two (more or less), or by
preference, two opposito linsps. Opposite and upon the inner side of the other jaw
of the bag frame we aflix an oblong case with suitable inlets to receive the haspз;
upon the bottom side of the said case we form a pin standing perpendicularly in the
centre of the case. Around this pin we pass a coiled wire spring, and we operate
upon this pin a flat shaped piece with a hole through its centre to receive the pin.
Upon each end of this flat shaped piece we form a wedge shaped catch or grip
with the thin ends facing the upper side of the case and opposite the inlets to
receive the hasps. Upon the upper side of the said flat piece we form a fork
shaped piece, the upper part of which operates as a press button through the upper
side of the case and rim of the jaw. Upon the upper side of the rim of the jaw we
secure a flat plate with a suitable hole formed through it to receive the press
button or upper part of the fork shaped piece. Near to this hole upon both, or by
preference one side, we form the base of a suitable trough or case in which we
operate three (inore or less) circular shaped, discs upon a centre pin which we
secure to each end of the trough. Between the base of the said trough and the
said hole we cut a slot or grooved passage in which we operate a wire rod, one end
of which we secure to the press button, and the other end extends underneath the
circular shaped discs. We cut out of these circular shaped dises a gap and segments
with serrations upon its inner and outer edge, as described with respect to the
trunk lock. We pass a pin through the said cut out segments in the discs to
prevent the exposure of the gaps when operated, and we place our marks, letters,
or (by preference) figures upon the outer and upper edges of the said circular discs.
Thus when the jaws of the bag frame are closed together the hasps are held by the
wedge shaped catches, which when the prearranged marks upon the discs are
placed so that the gaps in the said circular discs are in a line opposite the said rod,
it rises by the pressure of the said coiled spring up the gaps into the segments of
the said circular discs. By changing the position of the discs the extending rod is
held within the cut out segment, thus locking the jaws together, as the press
button cannot be pressed down to release the hasps until the said dises are moved
to the prearranged position. When the extending rod is not within the segments
of the said discs it operates between the outer edge of the said discs and the upper
side of the jaw rim, thus enabling the press button to be operated at a catch only.

page_text: To make the lock moro secure we form a trough with discs, and an oxtending rod
or arm upon each side of the press button, and construct and operate as above
described.
We construct bottle locks in the following manner:- -We take three or four
inches of tube (by preference metallic tube), near the centre of which we form by
pressure an internal ring. In the upper part of this tube, we place a conical plug
or stopper, the conical part whereof we forin of flexible rubber, cork, or other
suitable material; and we fit this conical plug so that it will slide up and down in
the upper part of the metal tube and not pass tho indented ring. Behind the said
conical plug we place a coiled wire spring, which we keep in its place by securing
a top or disc over the opening at the upper end of the said tube. Near to the
lower end of the said metal tube we affix within the interior a coiled flat spring,
the ends of which we turn out at right angles, and we cut away half of the said
spring near its angled ends, so that we can wrap one part over the other and
Thus when the two
project the ends through a suitable outlet in the tube.
projecting ends of the spring are pressed towards each other, it allows the metal
tube to be placed over the neck of a bottle until the conical plug is pressed back
by the mouth of the bottle, when upon releasing the projecting ends of the spring,
the sides of which grip the sides of the neck of the bottle, and the upper edges of
the spring lodge under the rim of the bottle, which causes the coiled wire spring
to force the conical plug tightly into the mouth of the bottle. To lock the metal
tube in the position described we affix one of our small padlocks as described with
the sides of their U shaped or upper piece extended with holes formed near tho
ends of the extended sides, to enable the shackle to be passed through. We place
these extended side pieces between the two projecting ends of the spring, which
projecting ends have corresponding holes through them, and which enables the
shackle to be operated and locked, while through the extended sides of the
Ushaped piece and the said projecting ends of the spring, thus preventing the com-
pression of the projecting ends and removal of the stopper from the bottle (until
the padlock is unlocked as before described).
Mortise locks are constructed somewhat similar to the trunk locks hereinbefore
described, the variation required being the formation and extension of projecting
pins from the internal plates through a cut out segment or segments in the uppor
front plate, so that they may indicato when the lock is flush or level with the sides
of its fastening.
And we also construct bottle locks, padlocks, strap locks, and bag locks as
follows:-
We construct bottle locks by placing in the upper part of a piece of tube three
(more or less) discs, with a gap in each cut out to receive a rocking piece which
rocks on its centre upon a pin, which passes through near the edge of the tube
while the outer sides of its two ends project through slots cut out of the tube or
case, the upper part of the said rocking piece we form flat upon the inner side to
pass into the gap or lodge in the cut out serrations upon the discs. The lower
part of the said working piece we forin hook shaped to lodge under the rim of the
bottle. We secure a top or disc over the opening at the upper end of the tube, to
the under side of which we secure our plates or discs by a suitable screw. Upon
the upper part of the top or disc we place our figures; thus the ends of the lever
discs project and denote when the gaps are opposite the upper part of the rocking
piece, enabling the operator to press the said upper part into the gaps, and remove
the lock from the bottle, as shewn in Fig. 1 and 2.
And we construct a bottle lock and stopper complete by securing upon one of the
angled ends of the gripping spring a case containing the lever discs, and operating
the other angled end into the gaps, as shown in Figs. 4 & 5.
We construct padlocks by hinging the shackle in the ordinary manner, and the
lever discs we form as described with respect to our trunk lock, but behind the
said discs upon the pivoting pin we place a coiled spring to tension their
adjustment. Upon the end of the shackle wo form a suitably shaped catch pieco

page_text: which passes down the gap into the segments of the discs, as shown in Figs. 13
& 14.
We construct a strap lock as follows:-Two pieces form the case which we
secure together. The upper part contains the discs which pivot upon a rod passing
through the centre of the case. The projecting levers of the discs project through
cut out slots in the upper part of the case and point or indicate to given figures
upon its surface. A U shaped bar with a pin projecting downwards from its base
passes through the holes in the leather strap. The two sides of the bar we project
through the upper part of the case to enable the operator to place the bar in or out
of the gaps in the discs, and at the same time out of the holes in the strap, thus
locking and unlocking the strap, as shewn in Figs. 8, 9, & 10.
And we construct bag locks by substituting for the box or case containing the
catches and extending bar with a hole in its centre, and a hole near each end to
receive circular shaped catches fixed on the opposite jaw of the bag frame, the push
piece or plunger simply consists of a rod with a spring operating around it, one
end of which we place in a ring recess, and the other end lodges against the
extending rod which passes through the aforesaid push piece or plunger. Near to
the outer holes in the said extending bar we form an oblong hole through which
we place a screw, and we form a plain portion extending from its head, we affix
this screw to the jaw of the bag frame and we operate upon the plain part between
the jaw frame and the said extending bar by means of a coiled wire spring, one
end of which we jam between the shoulder of the screw and the bag frame, the
other end we leave extending to place under a projecting pin upon the extending
bar; we place a cup with an outer rim to lodge upon the outer rim of the bag frame,
and in the said cup we form a tube, thus forming a ring recess in which we place
the lower end of the aforesaid spring which raises the plunger. Thus when tho
plunger is pressed its end lodges and presses downward the extending bar which
is held up by its aforesaid springs, thus liberating the circular catches and
making the plunger and extending bar independant of each other, as shown in
Figs. 18, 19, & 20.
To further illustrate our Invention we will refer to the annexed Sheet of
Drawings. Figs. 1 and 2 show a side view and plan of bottle lock upon a bottle.
a is the bottle; b, the cork; and c, the bottle lock containing the three discs
marked d; e is the rocking piece, the upper part of which passes into the gaps of
the discs when pressed inward, which causes the lower part to come outward, thus
removing its hook from under the rim of the bottle. f is a coiled wire spring upon
the screw between the top and the discs to tension their adjustinent. Fig. 3 is a
plan of the lever discs with serrations, as shewn, which prevent feeling or picking
the lock; Figs. 4 and 5 show a front view and plan of a bottlo lock and stopper
complete. a is the case in which the conical stopper marked b slides; c is the neck
of a bottle, into the mouth of which the flexible rubber cone of stopper is tightly
forced by the coiled wire spring marked d; e is the coiled flat spring with its ends
half cut away, wrapped one over the other, thus tightly gripping and lodging under
the neck of the bottle, and preventing the removal of the case until its ends are
compressed. To one end of the coiled flat spring e is attached a circular case
marked, which contains the discs marked g; the other end of the coiled spring e
is formed to enter into the gaps of the discs G. is a rivet which secures the
spring e in the case; the opposite part of the spring e projects through an outlet in
the case, thus keeping it steady.
Figs. 6 and 7 show the application of a small padlock to the stopper, thus making
one independent of the other. a is the extended U shaped piece, and b the holes
to allow the shackle to be operated through.
Figa, 8, 9, and 10 show a side, front, and plan view of a strap lock. a is the
case, through which the pin passes marked b, upon which pivot the discs marked c;
d is the U shaped bar which passes into the gaps in the discs c, and is its
projecting centro pin, which passes into the holes in the strap marked e, which is
rivetted to the bottom part of the case a. d² shows the oblong holes in U shaped

page_text: bar d to steady it and enable it to rise centrally into the gaps of the discs c. Thus
when the projecting ends of the bar d are raised into the gaps of the discs c,
it allows the strap to be passed along through the case a; when the bar dis
pressed out of the gaps, its pin d¹ passes through and locks the strap in that
position.
Figs. 11 and 12 show a side view and plan of a padlock. a is the case, in which
pivot discs marked b; c is a flat spring, one end of which is secured to the inner
side of the case a, and the other is turned down to pass into the gap and hole of
the discs b. Upon the flat spring c is secured a flat arched back marked d, so that
the ends of the segment shackle marked e may compress the spring e into the gaps 1
and holes of the discs, and thus rotato from either side and expose-its broken part
or gap, when it can be removed to or from its fastening. The object of the hole in
the discs is to allow the spring hasp of the bar to strike a radius, thus placing the
levers upon a different number when unlocked.
Figs. 13 and 14 show a side view and plan of a padlock with an ordinary shackle.
a is the case or body of the lock, into which is hinged the shackle marked b; c is
an upright pin upon which pivots the lever discs marked d; e is the gap and
segment in the discs d, into which passes the catch shaped piece marked formed
upon the end of the shackle b; g is a coiled wire spring upon the upright pin c,
which presses against the discs d and tensions their adjustinent to the given figures.
Thus when the shackle catch is in the segment e of the discs d, and the levers
not at their prearranged number, it cannot be removed until they are so placed.
shows a clicking spring to open in the dark.
Figs. 15 and 16 show a side view and plan of a trunk lock. a is the case of the
lock, into which passes the hasp or catch marked b; c, c, are the discs; e, the
segments and serrations; and g, the tension spring. This lock operates in the same
manner as in Figs. 13 and 14, and is applicable to mortise locks.
Fig. 17 shows a plan of the lever disc with its serrations.
Figs. 18, 19, and 20 show a front view, side view, and plan of the bag lock with
the extending bar fitted upon the frame. u is the body of the lock which holds
the lever discs marked b, and which pivot upon the centre pins marked c; d is tho
plunger, through which passes the extending rod marked e, which passes into the
cut out segments of the discs b; fare springs which tension the adjustment of the
lever discs b; g is a cup in which actuates the coiled spring h; i is the extending
bar, which is held by the screws and compressed upward by the springs j; l, l, are
holes in the extending bar to receive the circular catches marked m. Thus tho
coiled spring always keeps the extending rod e either pressing against the outer
edges of the discs b, or when opposite their gaps it raises the rod e into their
segments, when it operates as a lock, as the plunger d cannot be pressed down to
remove the extending piece i from the grip of the circular catches j; but when the
rod e operates only between the bag frame and the outer edges of the discs b, the
plunger & operates as a catch only. Thus the pressure always being upon the
discs allows the frame to be locked unobserved, and the plunger & being inde-
pendant of the extending bar i, it allows the frame to be closed when the lock is
locked.
Figs. 21 and 22 show the formation of the disc and levers to make the numbers
changeable.
Having thus described and ascertained the nature of our said Invention, and in
what manner the same is to be performed, we wish it to be understood that what
we claim and desire to be secured to us by the herein before in part recited
Letters Patent is,—
1. The manufacture and production of simple keyless locks (with or without
springs), in the manner substantially herein before described and shown on the
Drawings, or any mere modification thereof.
2. The novel means herein described of carrying out our said Invention, and the
various adaptations thereof, substantially as herein before described and shewn on
the Drawings, or any mere modification thereof.

page_text: 3. The formation and construction of the several parts of keyless locks, and the
several arrangements and combinations thereof respectively together forming our
improvements in locks, substantially as and for the purposes herein before described
and shewn on the Drawings, or any mere modification thereof.
In witness whereof, we, the said John Jackson, the younger, and Charles
Sheekey, have hereunto set our hands and seals, this Fourth day of May, in
the year of our Lord One thousand eight hundred and eighty two.
JOHN TLARSON T..R