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Патент USA US3053081

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Sept. 11, 1962
Filed Nov. 23, 1959
2 Sheets-Sheet 1
Sept. 11, 1962
Filed Nov. 23, 1959
29 27/9 / 30
2 Sheets-Sheet 2
Patented Sept. 11, 11962
William Badoud, 39, Ave. Montchoisi,
Lausanne, Switzerland
Filed Nov. 23, 1959, Ser. No. 854,768
Claims priority, application Switzerland Mar- 19, 1959
15 Claims. (Cl. 70-74)
FIG. 4 is a cross section of the lock along line 4——4
of FIG. 3.
FIG. 5 is a view in elevation with a section along line
5-5 of FIG. 4.
The lock shown in the drawings includes a lock-plate
1, of rectangular shape, and a plate 2, the two said ele
ments being joined together by any suitable means and'
placed inside a case 3 which, in its turn, is made integral
Di?erent kinds of combination locks and padlocks with
with the whole formed by the plate 2 and the lock-plate
an opening device through assigned ?xed members are 10 1. The latter comprises four fastening legs 4 which are
known. The said locks present disadvantages which
adapted to pass through the wall of the suit-case (not
render them unsuitable for the closing of modern luggage
shown) and then be folded back against the opposite face
such as suitcases, small trunks, attache cases, etc. Among
of the said wall. The lock comprises a bolt 5 capable
these disadvantages, mention must be made of the bulky
of pivoting about a spindle 6 integral with the plate 2.
shape of known locks, the volume and excessive weight of 15 The bolt 5, shaped like an inverted ‘0, includes a bolt nose
which often require the cutting out of the material con
7 which may project inside the staple of a hasp 9 ?xed to
stituting the luggage in order to house therein a portion
the folding cover of the suit-case. The bolt 5 is further
of the said Volume, the said operation necessitating costly
provided, at its other end, with a ?ange 10 hearing against
?xing and an increase in the weight of the luggage. Such
a curved portion 11 provided on a movable latch 12
locks also include a complicated device for changing the 20 (FIG. 5) disposed against the plate 2. A spring 13,
combination; they oifer reduced safety and their cost is
wound around the spindle 6, bearing on the one hand
against the edge 1% of the bolt and, on the other hand,
The present invention has for an object a lock which
against a curved portion 115% of the latch, tends con
eliminates the foregoing disadvantages. The said lock
stantly and automatically to hold the latch 12 and the bolt
fundamentally comprises a lock-plate provided with ele 25 5 in the closed position, as shown in FIG. 5 of the draw
ments for securing the lock to the body of one of the
ing, in which the bolt nose is completely within the
opening 8.
said articles and provided with an opening into which
the staple of a hasp is adapted to penetrate, the staple be
The latch 12, interposed between the plate 2 and the
ing secured to the folding part or closure of the article,
bolt 5, is constituted by a plate of sheet-metal cut out
a plate at least partly closing the said lock-plate, a pivot 30 so as to provide four tongues 14 (FIG. 5), each of said
ing bolt the nose of which, projecting inside the said open
tongues being capable of penetrating into a radial groove
ing in its closed position, is adapted to penetrate into the
or notch 15 made in a latching disc 16 for the lock.
opening of the staple of the said hasp, a spring member
Each of the four discs 16 is provided in its rear part with
adapted to normally hold the said bolt in the closed posi
a central pivot 17 engaging in a cavity 181 in the plate 2.
tion, a movable latch having at least one abutment tongue 35 The front part of each disc ‘16 includes a hollow journal
and cooperating with the said bolt so that any movement
19 having a cross-slot 20 which only leaves two half
imparted to the latch causes an angular displacement of
moon shaped parts from the section of the journal 19.
the said bolt, at least one knurled dial bearing a series of
The front part of the said journal is engaged in the un
signs corresponding to a series of positions of the said
tral bore of a dial 21 bearing, on the periphery of its
dial, the latter being adapted to rotate a latching disc 40 upper face, a series of equidistant signs 22, for example
having an opening or notch which vmay be placed, in one
numbers from O to 9.
of the positions designated by the signs on the dial, op
Each of the latching discs is further provided on its
posite the said abutment tongue, in which position the
periphery with shallow equidistant slots 23 into each of
said tongue may enter the said opening, permitting move
which may partly penetrate one of the tongues 14 of
ment of the latch, a ?exible device for marking the dif 45 the latch 12;. The said shallow slots, of no use in the
ferent positions which may {be given to the said dial, and
operation of the lock, are designed to baffle all attempts
an operating knob adapted to impart, against the action
to discover the combination.
of the spring member, a movement to the said latch and,
The dials 21 are disposed in pairs with a pair adjacent
consequently, occasion the withdrawal of the bolt. The
to each of the side edges of the lock, that is, two dials
lock according to the invention is characterized by the 50 on either side of the case, the axis of each of them being
fact that it further comprises, with a View to changing
situated in the corner of a square. Openings made lat
the relative position of the dial with respect to the latch
erally in the case uncover a portion of each dial in such
ing disc and, consequently, the combination of the lock,
a way that only one sign 22 carried by the said dials is
means for freeing the said dial so that it may be rotatably
visible at a time (FIG. 1). On the periphery of its inner
displaced relative to the latching disc, which latter is main
face, each dial 21 is provided with equidistant radial
tained in position by the abutment tongue, the said means
notches 24-, each corresponding to one of the signs 22.
being constructed in such a way that they are controlled
The notch corresponding to the ?rst of the signs marked
by the said operating knob.
on the dial, for example the number 0, is arranged in
such a way that it causes the stopping by abutment of
Preferably, the said dial comprises means which may
any turning movement imparted in a de?nite direction
be in engagement with a driving member integral with
to the said dial, the said arrangement permitting the op
the latching disc and removable under the action of a
eration thereof, from the said abutment in the opposite
device driven by means of the operating knob.
direction of turning without visual aid. The positioning
The accompanying drawings show, by way of example,
one embodiment of the lock according to the invention, 65 of the said dials with respect to each of the signs which
they carry is realized by means of elastic detent tongues
adapted to close a suit-case.
25 the end of which is designed to engage each of the
FIG. 1 is a view in elevation of the lock.
notches 24. The said tongues are integral with an inter
FIG. 2 is also a view in elevation, on a larger scale,
mediate plate 216 held between the two constituents of
with a part broken away and with a section along line
the case of the lock, the said plate being, on the other
2-—2 of FIG. 3.
70 hand, provided with bores for guiding the journals 19
FIG. 3 is a longitudinal cross section of the lock along
of the discs 16.
line 3—3 of FIG. 2.
In order to be able to change the combination which
allows the lock to be opened, a device is provided which
the portion v12a of the latch and held against any axial
permits changing the relative position of each of the
dials 21 with respect to the corresponding latching disc
16. The said device comprises primarily a driving or
movement by the sides of the groove 42. In order to move
the knob 35 to the bottom of the branch 38 of the open
ing 37, it is necessary to overcome a certain resistance
caused by the passage of the rod 36 in the constriction
clutch disc 27 the central part of which is provided with
openings corresponding to the section of the front part
of the journal and a spring bearing against the center of
the driving disc 27 which tends to maintain the driving
included between the \apices of the two rounded angles.
When the knob is in position at the bottom of the branch
38 of the said opening 37, it is also held against any un
timely axial movement by the elastic action of the spring
disc in contact with the rear face of the dial 21 to form,
in effect, a clutch. |Each of the driving discs 27 is further 10 13 which constantly tends to push the edge of the hole
provided with projections 29 which may penetrate into
Kit? to the bottom of the ‘groove 42.
The disposition of the opening of the branch 38 of the
holes '30 in each of the dials 21 and distributed over a
circumference concentric with the central bore of the
groove 37 has for its purpose, on the one hand, to ?x
the latching discs 16 when the combination is changed.
latter and corresponding to the numbers on said dial.
On the front face of each of the driving discs 27 a 15 When the knob 35 is inserted in the branch 33 of the
ball 31 is partly housed in the cavity of the journal 19.
groove, it maintains the latch in the open position, in
which the tongues 14 are engaged in the notches 15 of
The said ball 31 forming a cam follower is engaged in
an aperture 32 having sloping sides providing a cam
the said discs. On the other hand, the said disposition
prevents any change in the combination if one is not aware
surface in plate 33 which may pivot about spindle 34
?xed with respect to the plate 2 (FIG. 2).
20 of the old combination because the lock must be previous
ly opened when a change in the number is considered.
The freeing of each of the dials 241 is effected by im
The operation of the lock ‘according to the invention
parting angular movement to the said plate 33 about its
is as follows:
spindle having the effect of camming the ball to compress
It is assumed that the number of the combination is
spring 28. Opposite to the ball 31, the aperture 32 is
then replaced by a flat zone, thus bringing about, against 25 5803 (FIG. 1). Adopting, for example, a clockwise ro
tation, the dials 21 are placed in their respective positions
the action of the spring 28, the movement of the said ball
so that the notches 15 of each of the latching discs are
into the cavity of the journal 19 and, as a result, the dis
placed opposite the tongues 14. The dials are immobilized
engagement of the driving disc ‘from the dial 21. The
in the chosen position through the engagement of the
projections 29 of the driving disc are no longer engaged
in the holes 36 of the dial and the latter may be freely 30 elastic tongues 25 in the corresponding notches 24. By
vertically lowering the operating knob 35, the rod 36,
moved relative to the latching disc 16.
integral with the part 12at of the latch, drives, against
The angular movement imparted to the plate '33 is
the ‘action of the spring 13, the said latch together with
controlled by means of an operating knob 35 also designed
its ‘four tongues 14 which penetrate into their respective
to control the opening movement of the bolt 5. The said
knob comprises a rod 36 passing through the cover case 35 notches 15. During this operation, the edge of the bolt,
bearing against the curved part ‘11 of the latch, pivots
and the lock-plate due to an elongated opening 37. The
about the spindle 6 and frees the staple of the hasp 9
end of the said rod ‘36 is ?xed to the portion 12a of the
through the withdrawal of the nose of the bolt from the
opening 8. By releasing the operating knob, the spring
ment in the direction of the arrow F (FIG. 1) against the
action of the spring 13. Of course, this movement can 40 13 automatically restores the bolt to its original position
and, consequently, the tongues 14 are freed from the
only take place if the dials 21 are all placed in such a way
notches 15 of the discs .16 which may then be operated
that the number of the combination is formed, in other
by means of the dials 21.
words, the slot 15 in each of the latching discs 16 must
In order to change the combination of the lock, the
be placed opposite the respective abutment tongue 14.
\Any movement of the latch causing a pivoting of the 45 existing number, that is 5803 in the present example, is
formed and then the operating knob is lowered to the
bolt, the nose of the bolt withdraws from. the opening 8
bottom of the vgroove 37. In this posit-ion, the said knob
when the rod 36 of the knob 35 is at the lower end of
is then pushed into the branch 38 of the said groove,
the groove 37.
latch 12 with a view to imparting to the latter a move
In order to pivot the plate 33, the knob ismoved in
causing the plate 33 to pivot about the spindle 34. The
a different direction to that followed by the said knob 50 said plate is then in the position shown in dot and dash
lines in FIG. 2. This movement of the plate 33 produces
when it is a question of bringing about the opening
a cramming thrust against the balls 31 which are pressed
movement of the bolt. To this end, the elongated open
into the cavity of the journal -19 so as to effect, against
ing '37 is provided with a branch '38 perpendicular to its
the action of the springs 28, the disengagement of the driv
longitudinal axis and connecting with the said opening
37 adjacent to its lower end. The rod 36 of the knob, 55 ing discs 27 ‘and the release of the dials 21. The latter
can then be rotated freely relative to their respective
passing through the plate v33 due to an elongated open
latching discs, which latter are held in position by the
ing 39 in the latter, drives the said plate when it is pushed
tongues~14 of the latch 12. The new number of the com
into the branch 38 of the said opening. At the end of
bination is then formed by rotation of the dials 21
its travel, the knob 35 has brought the plate 33 into a
position such that the apertures 32 are at a certain dis 60 and the knob 35 is restored to its initial position.
It is obvious that the invention has only been described
tance from the balls 31, which latter are then completely
by way of example ‘and that various modi?cations of de
withdrawn into the cavity of the journal 19.
tails could be brought thereto without departing from its
In order to mark the two'positions of the knob 35 in
the branch 38 of the opening, the part 12a of the latch
What I claim is:
has a second hole 40 placed next to the hole 41 in which 65
l. A combination lock, particularly for travelling and
is located the rod 36 when it is placed in the opening 37.
The hole 41 is cut into by the ?rst so as to form two
fancy leather articles such as brief cases and the like,
said lock being of the type ‘comprising a lock-plate pro
vided with elements for securing the lock to a ?xed part
ti-ons which may be given :to the knob 35. ‘ The latter is
positioned by inserting the rod 36 in the hole 49, ap 70 of a brief case and provided with an opening into which
the staple of a hasp' secured to the brief case closure is
preciably larger than the hole 41. The said rod has an
adapted to penetrate, a second plate at least partly en
annular groove ‘42 opposite the section'of the past 123
closing said lock-plate, a bolt pivotably mounted be
bringing the section of the rod to a ‘diameter slightly less
tween said lock-plate and ‘second plate having a nose in
than that of the hole 4-1. When the knob 35 is' placed.
in ‘the groove 37, the rod 36 is interconnected with 75 the closed position of the lock adapted .to penetrate into
rounded angles the ‘apex of which separates the two posi
the opening of the staple of the said hasp positioned in
sitions which may be given to the knob when it is en
said opening, an elastic member adapted to hold said
gaged in the second branch of said opening.
bolt projected in the closed position of said lock, a mov
8. A combination lock according to claim 7, in which
able latch having at least one abutment tongue and co
the circular openings on said latch have different diam
operating with said bolt so that any movement imparted
eters, the ?rst, placed opposite the end of the second
to the latch from its normal lock closed position causes
branch of said opening, having a suilicient diameter to
an angular displacement ‘of said :bolt, at least one dial
permit the passage of the rod of the operating knob, while
bearing a series of signs corresponding to a series of posi
the second is appreciably smaller, said rod having a
tions of said dial, a latching disc including a journal co
groove permitting movement of the knob in said latter
axial of said dial ‘and having an opening which may be 10 opening in which it is held against any axial movement
placed in agreement with one of the positions designated
when it is placed in the ?rst branch of said opening.
by the signs ‘on the dial opposite said abutment tongue
9. A combination lock according to claim 1, in which
in such a position that said tongue may be engaged in
the journal is hollow and is provided with a notch, and
said opening thus permitting movement of the latch from
which includes a driving member including means to en
its normal lock closed position, clutch means drivingly 15 gage said dial extending diametrically through said notch,
connecting said dial and said latching disc, an elastic de
tent device ‘for accurately locating the different positions
and a spring in said hollow journal seated at one end
against said latching disc and at the other end against
said driving member to bias said driving member toward
which may be given to the dial, and an operating knob
connected to said latch and adapted to impart, against
said dial.
the action of the elastic member, a movement to said 20
10. A combination lock according to claim 9, in which
latch and thereby occasion the withdrawal of the bolt.
said ‘driving member is constituted by a disc, the central
2. A combination lock according to claim 1, in which
part of which is engaged in the notch provided in the hol
said clutch means includes a driving member in engage
low journal, said ‘disc having on its face at least one but
ment with said latching disc, said driving member being
ton which may engage said dial.
movable axially with respect to said disc, and a device in 25
11. A combination lock according to claim 1, in which
cluding a plate under the action of which said axially
movable member is moved axially out of engagement with
said dial, said plate being operatively engaged by said
operating knob.
said elastic detent device comprises an intermediate plate
mounted between the lock-plate and the second plate, ‘and
said dial is provided with notches, said intermediate plate
comprising at least one elastic tongue the end of which
3. A combination lock according to claim 2, in which 30 is adapted to engage said notches in said dial, each notch
said dial has a series of openings, at least one projection
corresponding to one of the signs carried by said dial.
on the driving member adapted to penetrate one of said
12. A combination lock according to claim 11, in which
openings, spring means to bias said driving member to
the notch corresponding to the ?rst of the signs marked on
ward said dial, a pusher element extending axially from
said dial is formed in such a way that it causes stopping
the center of the dial and capable of being moved axially 35 of the rotational movement imparted to the dial in one
against the action of the spring means by movement of the
direction to provide for operating said dial without visual
plate, the movement of said pusher element by said plate
aid by counting the notches that contact said tongue as it
causing the withdrawal of the driving member and the
is turned in the other direction.
release of the dial for rotation with respect to said latch
13. A combination lock according to claim 1, further
40 comprising means for freeing the said dial for rotation
ing disc.
4. A combination lock according to claim 3, in which
with respect to said latching disc so that it may be ro~
the pusher which controls the movement of the driving
tatably displaced relative to the latching disc, while said
member is constituted by a ball placed on the said driving
latching disc is held against rotation by said abutment
member and projecting from the center of the said jour
tongue, said means being constructed in such a way as to
disengage said clutch means, said means for freeing said
5. A combination lock according to claim 2, in which
dial being controlled by said operating knob.
the lock-plate includes an opening with two branches for
14. A combination lock according to claim 1, in which
the passage of the rod of the operating knob of which the
the pivot of the latching disc is constituted by a conical
?rst branch is adapted to guide the movement of said knob
protuberance projecting from the face of said disc, and
for moving the latch and the bolt, the second of said 50 a depression of the same shape to receive said protuber
branches perpendicular to the ?rst located near the end
of the ?rst branch being adapted to guide said knob dur_
15. A combination lock according to claim 1, in which
ing its movement to move said plate.
the end of the bolt opposite the nose of the bolt com
6. A combination lock according to claim 5, in which
prises an abutment in contact with a projection on the
said plate is provided with an elongated opening forming 55 movable latch, and wherein said elastic member comprises
a loose connection in which said operating knob is adapted
a spring constantly biasing the latch, and consequently
to move in moving the latch and the bolt, said opening
the bolt, toward the closed position.
being in alignment with the ?rst branch of said opening
when the plate is in the normal position, and out of align
ment with said second branch, whereby any movement 60
References Cited in the ?le of this patent
of said rod in the second of said branches causes said
plate to move.
7. A combination lock according to claim 5, in which
said latch may be provided, opposite the two-branched
opening in the lock-plate, with a part provided with two
circular openings, one cutting into the other so as to form
a rounded angle the apex of which separates the two po
Schoonmaker _________ __ Feb. 27, 1883
Takimoto ____________ __ Feb. 11, 1913
Great Britain ________ __ Apr. 26, 1928
Great Britain ________ .._. Sept. 29', 1948
France _______________ __ July 1, 1953
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