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Патент USA US2126063

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’ Aug. 9, 1938.
2,126,063
J.‘ P. VAN DINE ET AL
PERMUTATION LOCK >
Filed May 4, 1936
I
?ve/Zions
2,126,063
Patented Aug. 9, 1938 r I
, UNITED STATES
PATENT OFFICE
2,126,063
PERMUTATION vLCOCK
James P. Van Dine and Helmar E. ‘Van Dine,
Cambridge, Mass.
Application May 4, 1936, Serial No. 77,676
5 Claims.
The present invention relates broadly to per
mutation locks, sometimes termed combination
locks, and is applicable generally to looks of the
type mentioned irrespective of their intended
5 use: it is herein disclosed, for purposes of illus
tration, in the form of a permutation padlock.
' The principal object of this invention is to pro
vide a permutation lock wherein the locking ac
tion is effected .through the cooperation of the
'10 housing of the locking mechanism and the
shackle, when one end of the shackle is held ?xed
within and relative to the housing by the locking
mechanism.
15
~
Another object of this invention is to provide a
permutation lock wherein the movement, within
the housing of the locking mechanism, of one end
of the shackle is controlled by the locking mech
(Cl. w"Ia-29)
anism, save that the permutation padlock is in
the closed or locked state, as shown in Fig. 3.
Throughout the drawing, similar numerals of
reference indicate corresponding parts in the sev
eral ?gures.
‘
A casing I0, provided with two lateral aper
tures l2 andIlll, and a cover plate (not shown)
secured to the casing In by the rivets Hi When,
the permutation padlock is completely assembled,
form a housing for the locking mechanism of 10
the permutation padlock. Mounted pivotally, in
and. within this housing, upon the hub I8 is a
three-arm spider 20, each of whose arms is pro
vided with an arcuate dog 22 and a detent arm
21!, the respective purposes and uses of which will 15
be set forth presently. To one of the arms of; the
spider 20 is pivotally attached, by means of the
locking mechanism is alterable only when the
permutation lock is in the opened or unlocked
stud 2B, the shackle 28' at the end of its longer
arm, which extends through the aperture H2 in
the casing in from without the housing: when
the spider 2|] may be rotated in the direction of
the detent arms 24, v(counterclockwise in Figs. 3
state.
and 4) , the longer arm of the shackle 28 may be
anism.
I
I
Another object of this invention is to provide
20 a, permutation lock wherein the permutation
,
Another objectof this invention is to provide
forced into the housing and, in consequence of
25 a permutation lock wherein the permutation
the shape of the shackle 28, the end of the
shorter arm thereof is caused to register with the
second aperture Ill in the casing in and then to
enter therethrough into the housing, so that the
locking mechanism cannot be manipulated in any
manner revelatory of the settings to be made to‘
e?'ect the opening of the permutation lock.
These, and other, objects are fully realized in
'30 the present invention which consists in the con
struction, combination and arrangement of parts,
hereinafter fully described and immediately il
lustrated in the accompanying drawing disclos
shackle 28 assumes the position shown in Fig. 3. 1
Three tumblers 30, provided with ?anges 32, 30
are mounted rotatably in the face of the casing
in and are maintained in position by the coaction
of the face of the casing‘ m, the ?anges 32, the
ing the preferred embodiment of the invention, , dial plates 34, the expanding springs 36 seated in
35
wherein
'
the recesses of the tumblers 30, and the bolts 38,
I
Fig. 1 is a front elevation of the permutation
padlock when in the closed orIlocked state;
40
Fig. 2 is a front elevation of the permutation
with a series of holes 42, circularly distributed
padlock when in the opened or unlocked state;
upon the emergent face of the tumbler, and each
of the dial plates 3% is provided with a pin M
Fig. 3 is a rear elevation, on enlarged scale, of
the permutation padlock in the closed or locked
adapted to engage in any one of the holes M of
state with the rear face of the locking mech
anism housing removed to disclose the locking
its respective tumbler.
mechanism;
45
hearing stop means M and threaded into the dial
plates M. Each of the tumblers 30 is provided
,
_
Fig. 4 is a rear elevation, on enlarged scale, of
the permutation padlock in the opened or un
locked state with the'rear face of the locking
mechanism housing removed to disclose the lock
ing mechanism, but with only a portion of the
50 shackle shown;
Fig. 5.is a sectional view of a portion of the
locking mechanism, taken along the line 5, 5 of
Fig. 4; and
'
-
‘
Springmembers t6, t8
and. 5|], supported on the rivets iii, are bent to
make, at their ‘free ends, contact yieldingly with
the inner faces of the ?anges 32, enabling the
free ends of the spring members to ride in and out of the holes 42 as the tumblers are rotated
clockwise, thus serving as ratchet means and
limiting the rotation ofeach tumbler to one di
rection. The dial plates 34 are stamped with
digets 0 to 9 to register with any suitable settings,
such as A, B and C, marked on the casing l0, and
are provided with knobs 52 to facilitate the ro
Fig. 6 is a sectional view similar to the view , tation of the tumblers 30.
65 shown in Fig. 5 of a portion of the locking mech
Each of the three tumblers 30 is provided with
1
2
2,196,063
an arcuate slot 54 adapted to receive one of the
arcuate dogs 22 at‘ a de?nite position, de?ned a'n
gularly, of the tumbler 30: when not less than
means carried by the bolt at its opposite ends,
expanding spring means borne by the bolt and
interposed between the tumbler and the stop
all of the three tumblers 30 are in such de?nite
positions, de?ned anguiarly, the arcuate dogs 22
can enter into the arcuate slots 54, thus per
mitting rotation of the spider 20 and resulting in
the opening or unlocking of the permutation
padlock. In the closing of the permutation pad
meansrand a detent arm borne by the rotatable
10 lock, the arcuate dogs 22 are simultaneously and
completely withdrawn from the arcuate slots 54,
' and any displacement from position, by rotation,
of any one or more of the tumblers 30 will render
rotation of the spider 20 impossible oi accom
15 plishment, thus maintaining the permutation
padlock in the closed or locked state.
The construction of the tumblers 30, as shown
in Figs. 5 and 6, is designed to permit variation
in the angular relation between the dial plates
20 34 and the arcuate slots 54, and hence to permit
the changing of the settings of the dials for the
opening of the permutation padlock, when, but
only when, the permutation padlock is in the
opened or unlocked state. _Thus, when the per
25 mutation padlock is in the opened or unlocked
state, as 'is shown in Fig. 4, the dial plate 34 can
be pulled forward by means of its knob 52
against the action of the expanding spring 35,
thus disengaging the pin 44 from the particular
30 one of the holes 42 wherein it was engaged, and
member and interposable between the stop
means and the tumbler by rotation of the rotat
able member.
2. In a permutation lock of the character de
scribed, in combination, a housing provided with
two apertures, ‘a rotatable spider pivoted in the 10
housing and having a plurality of arms each one
of which bears a circumferentially disposed arcu
ate dog, a shackle one arm of which passes
.through one of the apertures in the housing and
is pivoted at its end to one arm of the rotat
15
able spider and the other arm of which is adapt
ed to pass through the other aperture in the
housing upon rotation of the rotatable spider, a
plurality of tumblers disposed equi-distantly
from the axis of rotation of the rotatable spider, 20
each tumbler being mounted rotatably in the
housing and having an arcuate slot adapted to
admit and to receive one of the arcuate dogs
upon rotation of the rotatable spider when the
tumbler is in a given position,.rotationally de 25
termined, relative to the housing.
3. In a permutation lock of the character de
scribed, in combination, a housing provided with
two apertures, a rotatable member pivoted in
the housing, a shackle one end of_which passes 30
through one of the said apertures and is pivoted
to the pivoted rotatable member and the other
end of which is adapted to pass into the housing
through the other aperture, and hand operable
tumblers cooperating with the pivoted rotat
able member for locking and unlocking against
rotatory movement the pivoted rotatable mem
the dial plate 34 can then be rotated into a
new position relative to its tumbler 30, and the
pin 44 may then be permitted to engage in an
other one of the holes 42: during these oper
ations, the tumbler 30 is maintained in position
?xed against rotation by the engagement of the
‘arcuate dog 22 in the arcuate slot 54. In this
manner, the angular relation between the dial - ber when both ends of the shackle are positioned
plates 34 and the arcuate slots 54 can be varied within the housing.
4. In a permutation lock of the character de 40
40 and the settings of the dials for the opening of
_ the permutation padlock can be changed.
'45
But
when the permutation padlock is in the closed
or locked state, as in Fig. 3, the detent arms 24,
by the rotation of the spider 20, have been inter
posed between the tumblers 30 and the stop
scribed, in combination, a housing provided with
two apertures, a rotatable member pivoted in the
housing, a shackle one end of which passes
through one of the said apertures and is pivoted
to the pivoted rotatable member and the other 45
end of which is adapted to pass into the housing
through the other aperture, an arcuate dog
borne by the pivoted vrotatable member, and a
tumbler rotatable in the housing and provided
with an arcuate slot adapted to admit and to 50
receive the arcuate dog upon rotation of the
holes 42.
‘
Since the complete penetration, throughout‘ pivoted rotatable member.
5. In a permutation lock of the character de
their lengths, of the arcuate slots 54 by the arcu
ate dogs 22 is required in order that the lock may scribed, in combination, a housing, a rotatable
member pivoted in the housing, a tumbler 55
55 open, the settings of the dials must be made with ‘
mounted rotatably in the housing and provided
considerable exactness. And the spring mem
bers 46, 48 and 50, restricting the movement of with a series of holes circularly distributed upon
the tumblers 30 to rotations in one direction, 'its external face, a boltrotatable within the
eliminate the possibility of “feeling out” the tumbler, a dial plate and stop means carried by
the bolt at its opposite ends, a pin carried by 60
60 settings by manipulations of the dials.
The present invention is not to be limited to the dial plate and adapted to engage in any one
the speci?c embodiment herein disclosed for the of the series of holes in the external face of the
purpose of illustration, but must be regarded as tumbler, expanding spring means borne by the
bolt and interposed between the tumbler and the
embracing all modi?cations and variations with
stop means, and a detent arm borne by the
65 in the scope of the appended claims.
rotatable member and interposable between the
What is claimed is:
stop means and the tumbler by rotation of the
1. In a permutation lock of the character de
,
scribed, in combination, a housing, a rotatable rotatable member.
JAMES P.'VAN DINE.
'member pivoted in the housing, ‘a tumbler
HELMAR E. VAN DINE.
mounted rotatably in the housing, a bolt rotat
70 able
within the tumbler, a dial plate and stop
means 40, as is shown at 24 in Fig. 6, so that
the dial plates 34 cannot be pulled forward to
disengage the pins 44 from the holes 42 and
thereafter to e?'ect changes of setting by per
'50 mitting the pins. 44' to engage in other of_ the
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