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Патент USA US2121060

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June 21, 1938.
2,121,060.
M. TIBBETTS I
I
LOCKING MECHANISM
Filed June 18, 1954
‘
"
3 Sheets-Sheet 1
June 21, 1938.
‘M. TIBBETTS
LOCKING MECHANISM
Filed June 18, 1934
'-
2,121,060
'
vI5 Sheets-Sheet 2
2,121,060?
Patented June 21', 1938
UNITED STATES PATENT OFFICE
2,121,060‘
. LOCKING MECHANISM‘
Milton Tibbetts, Detroit, Mich.-, assignor to Pack
ard Motor Car Company, Detroit, Mich., a cor
poration of Michigan
Application June 18, 1934, Serial No. 731,016
29‘ Claims.
This invention relates to locking mechanism
and particularly to looks ofthe combination type.
In some ways the invention is an improvement
'upon or development fromithe locking mecha
5 nism shown in my Patent No. 1,726,202, dated
August 27, 1929. Some of the objects are similar
to those of that patent, and particularly is it an
object of this invention to provide a lock that
will not only require no greater effort on the part
of the operator to‘ leave it locked than to leave it
unlocked but will also require no greater effort
to unlock the lock than is required to release a
latched part or throw a switch that has been
left unlocked.
The invention may be said to be an improve
ment upon the old Tucker type of combination
lock such as shown in Reissue Patent No. 5,566
dated September 9, 1873. It is an object of this
invention to transform a very simple type of com
bination locking mechanism having relatively
few combinations, such as the Tucker mechanism
for instance, into a combination looking mecha
nism having a very large number of combina
tions. The number of combinations is usually
25 squared. Thus where the Tucker lock with ?ve
?nger pieces has thirty-two combinations, the
mechanism of this invention, with the same num
ber of ?nger pieces, will have 32x32 or 1024 com
binations.
.
But the principles underlying the invention are
adaptable to many different kinds of locks and
in many diiferent ways. Another object may be
said to be to provide a lock mechanism in which
a single incorrect manipulation of the releasing
35 means effects ‘a large increase in the number of
possible inoperative combinations of the lock.
Still another object is to so combine two combi
nations or combination lock devices that the in
correct manipulation of one will require the cor
40 rect manipulation of both in correct sequence to
release the locked part. Another object is to pro
vide a combination lock such that tampering
with it will be revealed at once to the operator as
he attempts to open the lock.
45
,
Three adaptations of the invention are illus
trated herein. In the ?rst the invention is shown
in a lock having ?ve tumblers which will provide
thirty-one combinations, not counting the zero
combination which would be dif?cult to operate in
the form shown. With the throw-out mechanism
bringing into use the double combination this will
provide 961 combinations. The mechanism is in
skeleton form without a casing, only the essen
tial elements being shown in order that the
55 operating parts may be more clearly seen and
(Cl. '70-—312)
understood. This adaptation is illustrated in
Figs. 1 to 4 inclusive.
In the second adaptation, Figs. 5 to 9, the in
vention is shown in a lock of the Tucker type such
as in Patents Reissue No. 5,566 and No. 1,726,202,
referred to above.
The adaptation is to the ig
nition switch of an automobile.
. ‘
.
In thethird adaptation, Figs. 10 to 16, the in
vention is mounted in a handle such as the door .
handle of an automobile. Only three tumblers .
are shown but it will be understood that in this
and in the other forms the number of tumblers
may be increased or decreased as desired or as
space or cost permits. The principle may be il- .
lustrated by two tumblers, or six or a dozen 15
tumblers may be used and the number of combi
nations very greatly multiplied.
Referring to the drawings:
Fig. 1 is a perspective view ofv a mechanism
'
20
Fig. 2 shows a portion of the‘device shown in
Fig. 1, with the parts in another position; ,
Fig. 3 is a detail view of one of the tumblers;
Fig. 4 is a similar view of a tumbler in reversed
position on the support bar;
25
embodying one form of the invention;
Fig.5‘ is a view of a portion of an automobile
with another form of the invention adapted
thereto;
I
‘
Fig. 6 is an enlarged detail view of this second
form of the invention, part of the section being 30
on the line 6-6 of Fig. '7, the mechanism shown
in full lines being in the normal single locked po
sition and, in dotted lines, after unlocking by
manipulation by the correct primary combina
tions;
35
Fig. 7 is a section substantially on the line 'l--'l
of Fig; 6;
’
Fig. 8 is a section on the line 8—8 of Fig. 6;
, Fig. 9 is a view similar to Fig. 6, showing the
parts just after having been operated from double
locked position by manipulation of the secondary
combination to restore the parts to single locked
position. ‘When the hand releases the keys the
parts will return to the position shown in full
lines in Fig. 6;
> ,
'
45
.Fig. 10 is a view of a portion of an automobile
showing a door handle to which the invention
may be applied;
Fig. 11 is an enlarged detail view of this third
form of the invention, the section being substan
tially on the line H—ll of Fig. 10, some of the
parts being shown in both full line and dotted
line positions;
,
Fig. 12 is a section substantially on the line
l2-—l2 of Fig. 11;
65
2
2,121,060
Fig. 13 is a section on the line |3--|3 of Fig. 11,
with some of the parts omitted for clearness;
cylindrical face of one of the tumblers 26, in this
case the No. | tumbler. A plate spring 63 is
Fig. 14 is a cross section on the line |4—|4 of
fastened on the arm 6| and this spring is spaced
from the upper face of the arm 6| a distance
Fig. 11;
Fig. 14a is a fragmentary view showing some of
the parts of Fig. 14 in a different position;
Fig. 15 is a cross section on the line I5—|5 of
Fig. 11;
slightly less than the diameter of the release bar
5| so that if the lock bar is pushed along the
upper face of the arm 6| under the spring 63
the spring will yieldingly retain the lock bar in
Fig. 15a is a fragmentary view showing some
of the parts of Fig. 15 in a different position, and
that position, as will be more particularly herein
after described.
10
Fig. 16 is a cross section on the line |6—-|6 of
In the position of the parts shown in Fig. 1
Fig. 11.
‘ the pin 60 is in its locked position ready to be
Referring to the form of invention shown in . pushed down to trip the lock to which it may be
Figs. 1 to 4 inclusive, only the supporting parts of connected. The release bar 5| rests directly over
15 the casing for the mechanism are shown. Thus the notches 35 in tumblers 2, 4 and 5. Tumblers 15
there is a supporting part 20 in which is mounted :| and 3 are in a position reversed from that of
one end of a support bar 2|, the other end being theother three tumblers, and notches 3'! of tum
mounted in a similar bearing, not shown. This . blers | and 3 are a short distance to the right of
support bar 2| has a limited rotary movement,v the release bar 5|, as shown in Fig. 1, so that
20 a stop 22 cooperating with pins or stops 23‘ and the bar rests on the periphery of tumblers l and 3 20
24 in the bar. A spring 25 yieldingly presses the
support bar with its stop 24 against the stop 22.
Upon the support bar 2| ?ve tumblers 26 are
mounted in spaced relation. to each other. Each
25 of these ?ve tumblers may oscillate to a limited
extent on the support bar, the degree of oscil
lation being determined by a lug 21 and slot 28.
A spring 29 presses the tumbler in one direction
as shown particularly in Fig. 1. Each of the
30 tumblers 26 has a ?nger piece 30 for operating it.
All of. the tumblers are alike but they may be
mounted on the support bar in either of two
positions, and as shown in the drawings two of the
tumblers are in one position and the other three
35 in another position.
will oscillate on the support bar 2| as far as
they can go, the notches 3'! of those two tumblers
will be directly under the bar 5| and that bar
will drop down into those notches and into the
For the purpose of dif
ferentiating the, tumblers they are numbered in
notches 35 of tumblers 2, 4 and 5.
sequence in Fig. 1, beginning at the left, I, 2, 3,
tumbler No. 5 is also pulled, the peripheral part
4 and 5. Tumblers I and 3 are set on the support
bar in one position and tumblers 2, 4 and 5 are
40 in the reverse position. These positions and the
meaning thereof will be later more fully de
scribed.
Each of the tumblers is formed with a reversi
ble block 3| having a notch 32 in its outer face,
45 one side of the notch being beveled as shown at 33.
A screw 34 retains the block in either of its two
positions, the block being shown in the position
in 'tumblers | and 2 in Fig. 1 and in the reverse
position in tumblers 3, 4 and 5. In Fig. 1 the
.
50 block securing screw .is not shown.
Each of the tumblers 26 is also formed with a
peripheral notch 35, a radial lug 36 and a pe
ripheral notch 37 which is beveled at one side
as shown at 38. There is a peripheral part 39
55 between the notch 35 and the lug 36, another
peripheral part 40 between the lug 36 and the
notch 32 and another peripheral part 4| between
the notches 32 and 31.
'
Another supporting part of the casing is rep
60 resented by two brackets 56 from which a lock
release bar 5| is supported by means of a double
bar link 52 ‘and arms 53, the arms being pivoted
to the release bar and the link respectively. Con
nected to the lock release bar 5| is a return bar
65
where that periphery joins the beveled part 38 of
the notches 31. Thus the bar 5| is prevented
from dropping into the notches 35 of tumblers
2, 4 and 5. This means that the correct combina
tion to trip the lock requires the movement of 25
tumblers | and 3 but without the movement of
any of the other three tumblers. This may be
called the primary combination. Thus if tum
blers | and 3 have their ?nger pieces 36 pulled
towards the right in Fig. 1 so that those tumblers 30
54, the connection being by rigid links 55, and
both the release bar 5| and the return bar 54
yieldingly rest on the tumblers as shown in Fig. 1.
A look release lever 56 is shown as pivoted at
51 to a suitable support 58, and one arm 59 of
70 this lever operates against a pin 60 which will
‘trip the look when pushed downwardly. The
trip part of the lock beyond the pin 66 is not
shown. The other arm 6| of the release lever
56 has a pointed nose 62 extending partly into
75. the crotch formed by the release bar 5| and the
However, if 35
at the same time tumblers | and 3 are pulled
39 of tumbler No. 5 would then be under the bar
5| and that bar would be prevented from dropping
into the notches of the other tumblers.
40
But presuming that the correct combination
has been pulled, that is, that tumblers | and 3
have been pulled so that the release bar 5| drops
into the lined-up notches of the ?ve tumblers,
there must, of course, be a further movement of 45
the mechanism to trip the look. This is done by
continuing the pull on the tumblers | and 3 so
that they carry the support bar 2| around with
them. As this is done the release bar 5| which
is in the notch 31 of tumbler No. | slides under
the nose 62 of the release lever 56 and pushes that
lever so that it turns about its pivot 5'! and this,
of course, rocks the arm 59 downwardly against
the pin 66 and the latter is moved to trip or
operate the lock. The limit of movement is de
termined by the pin 23 striking against the stop
22. As the operator’s hand releases the pressure
on the tumblers | and 3 the parts return to their
initial position, ?rst by reason of the spring 25
rocking the support bar 2|, thus sliding the bar
5| out from under the nose 62, and then by the
spring 29 rocking the tumblers | and 3 on the
support bar, this latter movement pushing the
bar 5| upwardly by reason of the bevel 38 of the
notch 31.
65
But if any. other than this correct combina
tion of tumblers is pulled, such for instance as
Nos. 3 and 5, the bar 5| will then be over the
notches 35 of tumblers 2 and 4 and it will be over
the notch 31 of tumbler No. 3, but a peripheral
part of tumbler No. | and the peripheral part 39
of- tumbler No. 5 will hold the bar 5| in its upper
position as it is shown in Fig. 1. Continued
movement of the tumblers and consequently of
the support bar 2| will cause the bar 5| to be
3
2,121,060
will push the release bar 5| under the nose 62
and release the look, as shown in Fig.2. But if
the left in-Fig. 1 and since the release bar is rid
ing on the peripheral parts of the tumbers it will ' any other combination is pulled at that time the
not go under the nose 62 but will be pushed bar 5| will again be pushed under the spring 53
and the mechanism will again be, double locked.
El along the upper face of the arm 6| and under
Thus it will be seen that with the parts in the
the plate spring 63. The friction of the plate
position shown in Fig. 1, which may be called the
spring will hold the release bar 5| in that po
single locked position, a single continuous move
sition as the tumblers are returned to their ini
tial positions and until such time as the return ment of the correct tumblers, | and 3, will re
lease the lock, but an incorrect movement will 10
10 bar 54 pulls the release bar back as will be here
double
lock the combination and itywill then re
inafter described.
The correct secondary combination, which is quire the correct manipulation of bothcombi
determined by the position of the blocks 3| in nations in proper sequence to release the lock.
pushed by the lug 36 of tumbler No. 5 towards
their respectivetumblers, in the form shown in v
.15 Fig. 1, is |-—2, that is, ‘tumblers | and 2, and
none of the others, must be pulled to operate the
secondary combination.
~
Of course if this secondary combination had
been pulled when the parts were in the position
20 shown in Fig. 1, instead of the tumblers 3 and 5v
as above described, the same initial result would
have occurred in that the release bar 5| would
have been pushed under the spring 63, but, upon
the return movement of the tumblers in this lat
ter
instance the return bar 54 would have
.25
dropped into the notches 32 all ?ve of which
would then be aligned and by reason of the ab
rupt wall of notches 32 of tumblers 3, 4 and 5
acting on return bar 54 the spring 25 of the sup‘
30 port bar would be strong enough to pull the re
lease bar 5| out from under the spring 63 and
return that bar to its normal position, that is,
to the position shown in Fig. 1. On this return,
as the tumblers I and 2 make their ?nal move
35 ment caused by the springs 29, the return bar 54
is pushed out of the notches 32 by reason of the
bevel 33 of the notches in those two tumblers.
But if any other than the-correct primary or
secondary combination is pulled, the bar 5| is
40 pushed under the spring 63 and retained there
until the secondary combintaion is pulled. And
as long as the release bar is so retained opera
tion of the‘ correct primary combination will have
no effect on the release lever 56 and consequently
45 no effect on the release pin 60. In other words,
no single manipulation of the lock tumblers
thereafter will have any effect in releasing the
lock. vIt requires the two correct combinations
to be operated in correct sequence to effect are
50 lease of the look when the release bar 5| is held
under the spring 63.
So with the release bar 5| held on top of the
release lever 56, under the spring 63, it may be
said to be in double locked position, and it can
55 be returned to the single locked position or the
normal position in which it is shown in Fig. 1,
only by pulling the correct secondary combina
tion. As stated above, the‘ correct secondary
combination of the tumblers shown in Fig. 1 is
60 I--2, or in other words, the tumblers I and 2 must
be pulled simultaneously and without any of the
other three, to effect a return of the bar 5|.
When these two tumblers I and 2 are pulled all
?ve of the notches 32 are in line and then a
65 continued movement of the support bar 2| and
all ofthe tumblers causes these ?ve notches to
take a position under the return bar 54 and that
bar drops into the notches so that as the opera
tor releases the support bar 2| its spring 25 over
70 comes the friction of spring 63 and permits the
return bar 54 to return the release bar 5| to its
normal position. If the correct primary combi
nation is then pulled, that is tumblers | and 3,
the bar 5| will drop into the aligned notches and
75 a continued‘movement of the support bar 2|
With ?ve tumblers as shown herein, there are
thirty-one different combinations that may be .15
used ‘for the primary combination. Thus the
combination may be 1, 1--2,v 1-3, 2-4-5, etc,
And, of course, there are the same number of
secondary combinations.
If the lock is left in its
single locked position, as in Fig. 1, one attempt 20
ing to defeat the lock has one chance in thirty
one of guessing the right combination the ?rst
time. But if he makes a. mistake the first time
and operates an incorrect combination the mech
anism is then double lockedv and then the correct 25.
secondary combination must be pulled followed
by the correct primary combination, without any
erroneous combinations between them. Thus,
with the mechanism in its double locked position
the number has been squared and there are a
possible 961 combinations, that is, 31x31. This
is a sufficient number of combinations to make
the lock substantially undefeatable.
Of course,
the user of the lock may leave it in either of the
two positions, that is, either the single locked 35
position or the double locked position. If left in
the single locked position'it is necessary to make
but one movement'to trip the lock and since
there are thirty-one combinations this is a com
paratively safe condition. But if he wishes to 4.0
make it safer the user may, after setting the lock,
pull a wrong combination, thus pushing the re
lease bar 5| under the spring 63 and setting the
double combination. When he returns to operate
the lock it will then be necessary for him to make
two movements to release the lock, that is, he
must ?rst manipulate the secondary combina
tion and then follow with the primary combi
nation.
Referring to the form of the invention shown 50
in Figs. 5 to 9 inclusive, a portion of an auto
mobile is shown with the invention adapted to
the ignition lock thereof. In Fig. 5 the automo
bile body is indicated at I20, the engine at |2|,
and other parts are a battery I22, a ground I23, 55
a circuit wire I24 to a switch I 25, another cir
cuit wire I26 to another switch I21, and a cir-v
cu‘it wire I28 to the distributor and spark plugs
I29 of the engine. The switches I25 and I21 are
thus in series and the usual key I36 is shown 60
for operating the switch I 21, whereby the vehicle
may be left in a garage and operated by the at
tendants or left on the street locked with the key
only so that the owner may send another per
son for the vehicle, in this way not using the 65
combination vlock at all.
The combination lock is shown at I3I, in con- >
nection with the switch I25, and these partsare
shown in detail in the other ?gures.
The aut‘o.
‘
mobile instrument board I32 extends downwardly 70
from the cowl I33, and the locking mechanism
is further encased'b-y the dash I 34 and a sup
porting plate I35 for a guard I35, the latter
making it di?icult or impossible to examine the
?nger pieces of the lock to help in guessing at 75
2,121,860
the correct combination. Other desirable casing
or enclosing means may be provided as suitsv the
construction or adaptation.
V
1
In Fig. 6 the switch I25 is shown in detail,
comprising contact ?ngers I40 which are con
nected to the wires I24 and I28 and which are
joined by a switch member I4I to place the igni
tion in “on” position, assuming, of course, that
the switch I21 is already closed. A'spring I42
presses the switch member‘ I4I yieldingly towards
the right to make the contact and a switch bar
I 48 is connected to the member I4I to compress
the spring and break the contact. In Fig. 6
the switch is shown in its “off” position, being
held in that position by a spring pressed bolt I44
operating in a slot I45 against a stop I46. It
will be seen that if the bolt I44 is pushed up
wardly against its spring the switch bar I43
will be released and the switch I25 will be closed.
A support I41 encloses the switch and switch bar
and a pin-and-slot connection I48 limits the
movement of the bar.
‘
The support I41 also supports a trip lever
I50 which is pivoted at VI5I ‘to a slide I52, which
25 slide is yieldingly held in either of its two posi
tions by a spring pressed ball device I53. The
trip lever has a nose I54 which in normal posi
tion is directly under the bolt I44’ and it will
be seen that if the trip lever I50 is pushed up
30 wardly the bolt I44 will be pushed out of the
slot I 45 and the switch bar I48 will be released
and its spring I42 will move it to the position
shown in dotted lines, that is, the switch closed
position. But if the trip lever‘ I50 is positioned
as
so that its nose I54 is out of line with the bolt
I44, as it may be by moving the slide I52 to the
left, operation of the trip lever I50 will have no
effect on the bolt I44 and it will not, therefore,
release the switch bar.
40
Means for oscillating the trip lever I50 are
shown in the form of a vertically reciprocating
bar I55 and a link I56, the-bar being supported
in a bearing I51 on the casing.
Means for moving the trip lever laterally of
45 the bolt I44 are shown in the form of a lever
I60 pivoted at I6I to a suitable part of the cas
ing and provided with a pin I62 operating in a
slot I63 in the trip lever I50. A spring I64 yield
ingly retains the trip lever I50 and its slide I52
50 in the position shown, that is, the position with
the nose I54 under the bolt I44. The lever I60
has an arm I55 by which it may be operated, and
another arm I58 and a pin I61, the latter co
operating with a pivoted latch I68 supported on
55 the casing at I69 by which it may be held in
the position in which it is shown in Fig. 9, which
is the position of the trip lever I50 out from under
the bolt I44. In Fig. 9 the latch I68 is not
holding the lever I60 in that position as the parts
60 are there shown in the position about to release
the lever.
Also suitably mounted on the support I41 is a
casing I10 shown as pivoted at HI and prefera
bly so that it may be removed therefrom for
65 changing the combination or for other pur
poses. This casing has a lug I12 in contact with
the short arm I13 of a lever I14 pivoted at I15
on a bracket I16 mounted on the instrument
panel I32 or otherwise.
The long arm I11 of the
70 bell crank lever extends upwardly into the sup
port I41 and in contact with the switch bar I43.
As shown the casing I10 rests by gravity on the
arm I13 but it may, if desired, be pressed yield
ingly downward'rby a spring I18 arranged be-v
75 tween the‘bracket' I16 and a lug “Son the cas
'ing. It will be understood that this spring is
not su?icient to overcome switch spring I42 and
the latter will operate the switch bar I43 re
gardless of the weight of the casing I10 and its
spring I18. In order to overcome the spring I42 5
and open the switch I25, the operator must push
the casing I10 as by pressing on the toe I80
thereof.
The combination lock mechanism is mounted
within a box part I8I of the casing I10. Near 10
the upper part thereof is a movable plate I82
pivoted at I83 and having an upwardly extend
ing arm I84, which arm rests normally against
a stop I85, though the weight of the plate I82
tends to rock the arm I84 toward the right or
to its dotted line position in Fig. 6. The plate
I82 is supported in its full line position by one
or more of a series of tumblers I86, ?ve being
shown in this form of the invention. The tum
blers are'supported in guides, I81, I88 and I89 20
and their lower ends rest on pivoted plates I90,
there being one such plate for each tumbler. A
spring I!“ for each latter plate presses it yield
ingly against a stop I92 into the position shown
in full lines in Fig. 6, these plates being pivoted V25
co-axially on a rod I83, and each plate having
a dial or ?nger piece I94 projecting through the
bottom of the box part of the casing I10 where
they are accessible to the operator. These ?nger
pieces are numbered respectively I, 2, 3, 4 and 5.
30
Each of the tumblers I86 has a straight por
tion sliding in the guides and an o?set portion
I 95 at its lower end, these tumblers being reversi
ble so that the offset end may be made to rest
against either the front or'the rear of the up 35
turned faces of the plates IQIland the positions
of these offsets determines the combination.
Thus some of the offsets are at the rear and some
are at the front, and in order to pull the correct
combination the ?nger pieces of only those tum
blers having their offsets at the rear, must be
pulled. With the plates I90 in their rest position
the plate I82 is supported in its normal position
by those tumblers having their offsets at the
rear, and for the sake of simplicity only one of 45
the thumblers is so shown. This is the tumbler
resting on the plate of ?nger piece No. 2.
The
other tumblers have their offsets on the front or
lower parts of their respective plates I90 and
consequently the upper ends of those tumblers
are in the lower position. This means that the
primary combination of this form‘of the inven
tion is 2, that is, the dial or ?nger piece No. 2
only should be pulled to operate the primary
combination. If that ?nger piece, and that ?n 55
ger piece only, is pulled (that is, moved to the
right in Fig. 6) its tumbler I86 will drop down
and permit the plate I 82 to follow, thus moving
the arm I84 toward the right so that it is directly
under the reciprocatingbar I55. Now if the 60
pull on the ?nger piece is continued so that the
entire casing I10 is rocked on its pivot I1I,
into the position shown in dotted lines in Fig. 6,
the arm I84 will push upwardly on the bar I55
and this through the link I56 will oscillate the 65
trip lever I50 so that its nose I54 will push the
bolt I44 out of the slot I45 and release the switch
bar I43, and the spring I42 will move the switch
bar I43 to the right and close the switch I25
at the points I4I. This, of course, closes the 70
ignition circuit of the engine and the switch
will remain in that position until it is again set
by pushing downwardly on the toe I80 as above
described.
I
But if anything but the correct combination is 75
v2,121,060
pulled the plate I82 ‘will remain in its full line
position in Fig. 6 and the rocking of the casing
5
casing I10 in an upward vdirection. There is also
provided between the bracket I16 and the casing
I10 a dummy ratchet IIZ, merely for confusing
I10 will cause the' arm I84 to contact with the
arm‘ I65 on the lever I60 and that lever will be ~ the sound or feel caused by the movement of the
rocked so that the pin I62 moves toward the left various levers and latches in the operation of
and carries with it the trip lever I50 and its slide the mechanism. This makes it more dif?cult to
I52. This moves thenose I54 of-the lever I50 ascertain whether a part is operating or not and
out from under the bolt I44 and consequently any the lock is, therefore, less likely to be defeated.
operation of the trip lever in that position will
10 have no effect upon the bolt I44and will not re
lease the switch bar.
When the combination is thus incorrectly op
erated and the trip lever I50 is moved to its left
hand position, the latch I68 drops down over the
15 pin I61 and positively retains the lever I60 and
consequently the trip lever I50 in that position
when the casing I10 is returned to its original
position.
Means is provided for returning the trip lever
A somewhat similar o?ice is performed by the
dummy plunger ‘I05 in that the resistance of the 10
spring I06 may be made substantially the same as
that of the gravity operated latch I68, or the
latch may be spring pressed to make its resist
ance substantially the same as that of the spring
I06. This is so that one trying to defeat the lock 15
will not know whether he has hit upon the cor
rect secondary combination or not. For the same
reason the tension of the spring I64 and the
spring behind the bolt I04 may be substantially
20 I50 to its operative position, this means being _ the same so that one cannot tell by feel whether 20
one or the other spring is being depressed.
shown as a secondary combination mechanism.
In Fig. 6 the mechanism is shown in full lines
It comprises a plate I0! similar to the plate I82
except that its forward part is slotted to provide
clearance for the primary tumblers I86. This
25 plate IOI extends forwardly to a position be
tween the guides I81 and I88, its spaced forward
ends being shown particularly in Fig. '1. It is
pivoted on the casing at I02 and it has an up
wardly extending arm I03 similar to the varm
30 I84 of the plate I82.
Inv the normal position .of
the plate I 0! the armI03 rests against a stop
I04 and its upper end is beneath a dummy push
bar I05 backed by a spring I06. When the plate >
IIlI moves on its pivot as will be hereinafter de
35 scribed the upper end of its arm I03 will be di
rectly‘ beneath a ?ange or other part I0‘I of the
latch I68 so that upward movement of the arm
I 03 will push the ‘latch upwardly and release
the pin I61 if the pin is being held by the latch.
A series of secondary tumblers I08, similar to
the primary tumblers I86, are supported in the
guides I88, ‘I89, and the lower ends thereof are
in its rest position with the trip lever I50 in single
combination position. In dotted lines the cor
rect primary combination has been pulled and the 25
plate I482 has, dropped so that the arm I84 is
undervthe bar I55 and has pushed that bar and
consequently the trip-lever I 50 into position for
releasing'the switch bar I43. Also, the switch
bar is shown in dotted lines in its released posi 30
tion and the lever I14 is in its retracted position
ready to push the switch bar I 43 towards
the left 'upon downward swinging of the casing
In Fig, 9 the secondary combination has just, 35
been pulled by the ?nger of the operator. The
switch bar I43 is in “off” position and the trip
lever I50 is in double locked position. By thus
operating. ?nger piece No. I, which is the correct
secondary combination, plate IOI has dropped 40
and its arm I03 moved over under ?ange I01 of
the latch I68 and the latch has been moved up
offset as at I09 and rest on the respective plates wardly to release thepin I61. The lever I 60 is
I00, above described. These secondary tumblers held in its position by the arm I84 but as soon as
I08 are arranged adjacent the primary tumblers the operator releases the casing the latter will 45
45 I86 as shown particularly in Fig. 7. As with thev drop and with it the arm I84 and arm I85, and
other tumblers, these tumblers I08 may be set spring I64 will move lever I60 towards the right
and thus restore trip lever I50 to its normal or
in either of two positions ‘for'the purpose of ?x
ing the desired secondary combination. Their single locked position. It is then that a manipu
action is the same as the primary tumblers I86. lation of the primary combination will operate 50
50
The plate ml is supported by these secondary the bolt I44 and throw the switch.
Referring to the third form of the invention,
tumblers and by the correct manipulation of the
?nger pieces I94 the tumblers that are holding that shown in Figs. 10 to 16 inclusive, the inven
the plate MI in its upper position will be dropped tion is shown as adapted to a door handle, and
down and the plate will drop so that its’ arm I03 in particular to a door handle for an automobile. 55
55 will be in position for tripping the latch I68.
In this construction, which is illustrative only,
'
As shown the ‘secondary combination is 1, as no attempt has been made to show a commercial
the oif-set portion of this tumbler istowards the form of the invention. Thus parts of the device
rear, thus making it necessary to pull dial or shown are made integral where perhaps they
?nger piece No. ‘I in order to lower the tumbler. should be made in several pieces and secured to
60 When’this is done and the casing I10 is rocked gether so that they. could be more easily assem 60
the arm I03 will trip the latch I68 and, if the bled. Changes may be made to adapt the device
lever I60 has previously been held in its latched to any one of the various forms of door handles.
‘In Fig. 10 a portion of an automobile 20I is
position, it will be returned to its normal posi
tion by its spring I64. Of course it carries with ' shown and two handles 202 are arranged there 65
65
it thetrip lever I50 and restores it to its operative on. Each of these handles is preferably of the
well known type that is held in horizontal posi
position. Then if this manipulation of the sec
ondary combination is followed (without inter-v
position of any other combination) by a manipué
70 lation of the correct primary combination, the
bolt I44 will be operated and the switch bar I43
moved to its “on” position.
I
‘
tion against a stopand may be moved perhaps
thirty degrees against a spring for the‘purpose
of releasing the lock or door latch. Locking is 70
obtained by releasing the shank of the door
handle from the latch mechanism so that the
handle may be turned without moving the latch,
a spring being provided to return the handle to
In Figs. 6 and 9 the stops II 0 are provided
within the spring I18, forthe purpose of guid
75 ing that spring and to limit the swinging of the its horizontal position.
When thus locked the 75
6
2,12l3060
operation of the handle'is merely idle and the re
lease is not eifected. To unlock the door the
shank. "When the lock bar 236 is in its upper
position, as shown in Fig. 11, the handle may be
conventional key lock is turned and the handle rotated and the lock bar will travel idly around
is connected to the release mechanism so that» -in the slots-230 and 233. But if the lock bar
thereafter when the‘handle is turned it will move is dropped down to the position in which it is
the release mechanism and permit the door to shown in dotted lines with its cross head 23‘!
be opened.
in the plane of the ?anges 23L 232, that is, in
Referring to Fig. 11, 203 represents a portion the notches 234, 235, rotation of the handle will
of the door in which the handle 202is mounted, then carry with it the collar 2|6 and the latter
will be rotated throughout the thirty degrees and
10 this handle being retained on the 1' door and
adapted to be rotated relatively thereto, as by will take with it also the sleeve 2!! which will
an escutcheon plate 204. This plate is secured thereby release the door- latch or bolt. This
in place by one or more'screws 205 and is pro
means that the door handle is operative to re
vided with an annular’ recess 206 housing a
lease the latch only when the lock bar 236 is in’
its lower position, and operation of the handle 15
15 ?ange 201 on the-inner end of the shank 208 of
the door handle.
'7
when the lock bar is in its upper position will
The door 203 is formed-with a cylindrical avail nothing. Thus in Fig. 11 the mechanism is
opening 209 therethrough and is cut away at 2!!) shown in full lines in door locked position;
The primary combination mechanism for re
to form a‘recess for the lock release mechanism,
leasing the door, which’ means mechanism for 20.
20 part of which in the form of a sleeve is shown at
dropping the lock bar 236 to its lower position,
2! I. Partial rotation, thirty degrees or there
abouts, of this sleeve 2H ‘will release the lock comprises a rocking plate 240, pivoted in the
or door latch.
‘
handle shank as at 241 , shown particularly in
‘
A back plate 2l2 is secured in place over the
opening 209 as by the bolts 2 I3‘. "
-
-
>
A'stationary support 2H for a portion of the
lock mechanism is mounted‘ concentrically in the
opening 209 and secured, as by a key 2l5, to’ the
back plate 2l2. Surrounding the support '2I4 is
a' collar 2l6 to which'the sleeve 2H is keyed- as
by the key 2H. Thus the turning of the collar
2| 6 will carry with it'the sleeve 2H, and both
of these may be turned upon and‘ relative to the
stationary support 2I4. Adjacent its inner end
Fig. 14, which plate has an arm 242 connecting it
to the lower end of the lock bar 236 through a
link 243. A spring 244 tends to draw the bar 236
downwardly and this will happen when there is
not sui?cient counteracting force operating to
move the plate 240*in the other direction.
25.:
Supported for limited longitudinal reciproca 30.
tion in the bracket 228 and in another bracket
245, separated therefrom and mounted in the
shank of the handle, are the combination tum
relation to each other but so that one can turn
blers 246, in' the present form three of these
tumblers being shown. The lower ends of the 35
tumblers extend through the bracket 245 and
each is provided with a head 241 between which
and the bracket 245 is a coil spring 248. Thus
these springs constantly press the tumblers 246
on the other.
downwardly.
35 the interior' of the shank'of the door handle is
formed with an annular groove 2!!! in which a
split ring 2l9 may be sprung for the purpose of
retaining the handle and the collar 2I6 in proper
'
The door handle itself comprises the cylindri
cal shank portion 208., above referred to, and the
hollow hand hold portion 220 is arranged at right
angles thereto. All of the lock mechanism is
45 mounted in these handle parts.
.
The stationary support 2l'4 extends entirely
through the collar member 216 and at its inner
'
‘
40
The tumblers are operated by ?nger pieces 249,
which are‘ numbered I, 2 and 3 respectively, these
?nger pieces being. in the form of lever arms
pivoted as shown at 250. to a plate portion 25!
which may be a detachable part of the hand hold 45
portion 220 of the handle. Screws 252 are shown
for retaining the plate. The inner ends of these
end it is formed with a radial arm. 22! upon
lever arms or ?nger pieces rest against the re
which is a re-entrant stop pin 222; It is also spective ends of the tumblers 246 and when these
?nger pieces are moved by the ?ngers of the op
50 provided with a radial supporting arm 223 hav
ing a re-entrant stop 224, in parallel with the erator the tumblers 246 are moved upwardly
stop 222. As shown, these stops operate in ‘,an 1 against the action of their springs 248.
arcuate slot 225 in the inner face of the collar
Upon each'of the tumblers 246 is a tumbler lug
member 2 l6, and also extending into the slot 225 253 and these lugs may be mounted on the tum
are two- stops 226 and 22‘! mounted on a bracket blers in either of two positions, the lugs being
228 on the shank 202 of the handle. Stop 226 ope formed with spaced pins 254 entering correspond
erates between stops 222 and 224, thus limiting ing holes in the tumblers. In Fig. 11 tumbler No.
the operation of the handle to approximately I has its lug 253 mounted on the left hand side
thirty ‘degrees. A coil spring 220' is arranged be
and above the plate 240 so that its contact point
255 rests against the left hand plate portion of
60 tween stops 221 and 224 to yieldingly retain the
handle in its horizontal position. Thus the han
the plate 240 and the spring 248 of this tumbler, 69
dle is arranged to operate to a limited degree by being stronger than the spring 244 of the lock
reason of this interconnection with the stops on bar, tilts the plate 240 to the full line position
the stationary support 2 l4.
in which it is shown in Fig. 11. ‘The tumbler lug
The inner portion of the. collar 216 is somewhat of tumblers 2 and -3 are on the other side of the
enlarged and in addition to the arcuate slot 225 tumblers and below the plate 240 and as long as
heretofore referred to, it is formed with a second they remain in that'position they will not inter
arcuate slot 230 formed with parallel ?anges 231 fere with the plate 240 turning on its pivot to
and 232 leaving a narrower slot 233 between the lower position of the lock bar 236. But should
them. These flanges are cut away to form radial either of these tumblers be moved upwardly, as TU
notches 234 and 235, this construction permit
ting the entrance of a lock bar 235 having a cross
head 231, which look bar is mounted to slide lon
gitudinally of the shank of the handle in the
3,6 bracket 228 and another bracket 238, also in the
by operating ?nger pieces 2 or 3, the plate 240
would be prevented from turning to its unlocked
position even though tumbler No. l was operated.
From this it will be seen that the correct pri
mary combination of this form of the invention is 75
s
‘ 2,121,060
1 and if ?nger piece No.! is operated tumbler
lug No. ! will be moved upwardly and lock bar
236 will drop to its dotted line position where
its cross head is in the notches in the‘ ?anges 23!,
232. Turning of the handle will then carry
around with it the collar 2!6 and the latch re
lease sleeve 2! I. Release of the handle and ?nger
piece will return the parts to their normal posi-'
tions. If any other than this correct combina
tion is‘ pulled the lock bar 236 will not be dropped
and the handle will be rotated idly and the door
cannot be opened. Also, the combination may be
changed by dismounting a lug 253 from its posi
tion on the tumbler 2&6 and reversing it and
15 mounting it in the opposite position on the same
tumbler. This may be done with all of the tum
blers.
Means is provided for throwing out of opera
tion the primary combination until such time as
a secondary combination returns the mechanism
to its original position.
In other words, this
means will change the mechanism from a single
combination lock to a double combination lock.
On the radial arm 223 of the stationary'sup
25 port H4 is a boss 26!] in which is supported to
oscillate a rock shaft 26H. A pin 262 retains the
shaft in position and two spring pressed balls
263 yieldingly hold the rock shaft in either one or
the other of its two positions.
30
'
g
The rock shaft 26! is preferably mounted within
the handle shank on the side opposite to the lock
bar 236 so that it will not interfere with the opera
tion thereof. Adjacent its lower end and prefer
ably below the mounting of the plate 24!] the rock
35 shaft 26! has secured thereon a bracket 264. The
securing means may be a screw 265. This bracket
is shown in Figs. ll, 12, 13, 14 and 14m. It is
somewhat segmental in shape and is provided
with a radial slot 266 in which a pin 26'! mounted
40 on the left hand side of the plate 246 is adapted
to freely operate vertically when the bracket 264
is in its normal or single lock position. It is so
shown in Figs. 11, 13 and 14. It will be under
stood that the rock shaft 26!, being mounted on
45 the stationary support 2 !4 does not oscillate with
the handle as does therplate 246 and the other
mechanism within the handle. So when the han
(He is moved the pin 26'! moves relatively to the
bracket 264 and moves that bracket if the pin is
50 in a plane with any of the parts of that bracket.
When the primary combination is correctly op
erated and the handle turned the plate 240 will
be in its dotted line position in Fig. 11 and the
pin 26‘! will then be entirely above the bracket
55 264 so that there is no operation of the latter.
But if the handle is turned when the incorrect
primary combination has been operated the plate
240 will be in its full line position in Fig. 11 and
the pin 26'! will press against a downwardly ex
60 tending ?ange 268 (Fig. 13) on the bracket 262
and swing the bracket, and consequently the rock
shaft 26!, so that the bracket assumes the posi
tion shown in Fig. 14a. In that position it will be
seen from Fig. 14a that the pin 26'! is under the
— segmental portion 269 of the bracket 264 and
when the handle returns and the pin 26'! also re
turns to its original position the pin will still be
under the segmental portion 269 of the bracket.
In this latter position the pin 26'! is shown in
dotted lines in Fig. 1.4a. Thus, if this primary
combination has been incorrectly operated the
pin 26'! is under the segment 269 and even though
the primary combination were then correctly op
erated the pin would prevent the plate 240 from
75 assuming its unlocked position because of this
7
segment 269. In other words, the segment 269
prevents the pin from moving upwardly and
thereby prevents the plate from rocking as long
as thewsegment is in that position.
The bracket 264 is also provided with a ledge
216 upon which the pin 26'! would slide if the
correct combination was operated, (thus bring
ing the pin above the entire bracket) and the
?nger piece was released before the door handle
was returned to its normal position. This ledge, 10
therefore, prevents the pin 26'! from dropping on
the wrong side of the ?ange 268 by this possible '
unusual operation of the mechanism.
The rock shaft 265 is retained in this shifted
position, which is its double locked position, by
one of the spring pressed balls 263 above referred
to. It can be returned to its original position, to
its single locked position, by a secondary combi
nation mechanism which may be operated by the
15
same ?nger pieces and by the same tumblers 246.
Thus there is a secondary plate 236 pivotally sup
ported in spaced relation above the plate 26!], and
the tumblers 246 pass upwardly through the cen
tral opening in this plate just as they pass
through a similar opening in plate 26!]. Plate 25
286 is yieldingly held in its ‘operative position by
a spring 28! extending between its right hand
side and the bracket 228. But this operative
position is not its normalposition. Normally the
plate 286 is as shown in full lines in Fig. 11 and 30
it is adapted to be moved from this position only
upon the pulling of the correct secondary com
bination. Thus, each of the tumblers 266 has
its corresponding tumbler lug 282 (which is re—
versible like the other tumblers), and the one
(or more) of them which is to be operated to
place the plate 280 in operative position is mount
ed on the right‘ hand side of the'tumbler. Thus,
as shown‘, the secondary combination is 3 and
the No. 3 tumbler lug 282 is mounted on the 40.
right hand! side' of its particular tumbler. If
that tumblerlis raised by depressing No. 3 ?nger
piece the' tumbler lug 232 will be moved up
wardly and will permit the plate 286 to rock on
its axis-through the action of the spring 26!. 45
This movement of the plate 286 brings a pin 223.
which is mounted on it, down into the dotted
line position shown in Fig. 11 where it rests on
the beveled edge of a segmental bracket 28d
mounted on the rock shaft 26!. If the handle is 50'
now turned the pin 283 will ride along the bevel
285 of this-bracket 285 until it drops behind the
shoulder 286 thereof, the spring 26! yielding
slightly for this purpose, and then as the handle
is returned to its normal position the pin 263, 55
acting against the shoulder 286, will oscillate the
bracket 286i and with it the rock shaft 26! and
bracket 264 back to their original position. This
bracket 286 is particularly shown in Figs. ll, l2,
13, 15 and 1541. In all of these figures. except 15a, 60
it is shown in its normal or single locked position
but in_l5a. the bracket is in its double locked posi
tion and the pin 283 has just dropped behind the
shoulder 286 of the bracket. In dotted lines the
pin 283 has returned to its original position as it 65
is shown in Fig. 15. * As the rock shaft is thus.
retracted or returned to its original position the
other spring pressed ball 2'63 operates to retain it
there until it is again operated by the incorrect
70
manipulation of the primary combination.
Thus it will be seen that by the correct manipu
lation of the primary combination a single move
ment of the handle with the operator’s ?ngers
on the right combination of finger pieces will
immediately operate the lock and unlatch the 75
8,
2,121,060
door. But‘if the incorrect combination is used
the plate‘ 240 will be in the wrong position and
consequently- the lock bolt 236 will be free in
the slot 236 and movement of the handle will
not operate the lock sleeve 2| I. Also, this move
ment of the handle will, through the pin 26‘! and
the bracket 264, rock the shaft 26] so that the
plate 24!] cannot thereafter be moved to opera
tive position until the rock shaft ZBI has been re
10 turned. This latter can be done only by correct
manipulation of the secondary combination
whereby the plate 280 will be moved to the dotted
line position shown in Fig. 11 and. the pin 283
will ride the bevel 285 and drop behind the
15 shoulder 288 and on the return movement rock
the shaft 26l back to its original position. If
the next operation of the handle is with the
correct primary combination the lock bolt 2%
will be dropped into operative position and the
20 latch will be released and the door opened.
It will be observed also that if the vehicle upon
which this look handle is installed has been left
with the lock in the single locked position, and
of the parts so that'thereafter a different oper
ation 'of the tumblers will be necessary to move
said part.
'
5. In locking means, the combination of two
tumblers, a lock part to be moved by a pre
selected operation of said tumblers, and means
to effect such movement, said tumblers and
means being so related that one selected opera
tion of said tumblers will move said part and
any other operation thereof will change the re 10
lationship of the parts so that thereafter a se
lected combination operation of the tumblers
will be necessary to move said part.
6. In locking means, the combination of two
tumblers, a lock part to be moved by a pre 15
selected operation of said tumblers, and means to
effect such movement, said tumblers and means
being so related that one selected operation of
said tumblers will move said part and any other
operation thereof will change the relationship of 20
the parts so that thereafter a selected combina
the primary combination, he knows that some
one has been tampering with the look. This will
tion operation of the tumblers in a particular
sequence will be necessary to move said part.
7. In locking means, the combination of two
tumblers, a lock part to be moved by a pre 25
selected operation of said tumblers, and means
to effect such movement, said tumblers and
suggest to him the desirability of double locking
means being so related that one selected opera
the owner upon returning to his car ?nds that it
25 cannot be opened by the single manipulation of
the mechanism the next time or of ?nding a
30 safer place for his car.
It will be understood that various forms of the
invention other than those described above may
be used without departing from the spirit or
scope of the invention.
35
Having thus described my invention, what I
claim and desire to secure by Letters Patent is:
1. In a combination lock, the combination of
a movable support, tumblers and operating means
therefor mounted therein, a member operated by
40 said tumblers and movable with said support, a
rock shaft mounted on a stationary part, means
for rocking said shaft to render said member in
effective upon movement of said support with
incorrect operation of the tumblers, and means
'45 for restoring the rock shaft to its original posi
tion.
2. In a combination lock, the combination of
a movable support, tumblers and operating means
therefor mounted therein, a member operated
50' by said tumblers and movable with said support,
a rock shaft mounted on a stationary part, means
for rocking said shaft to render said member in
effective upon movement of said support with in
correct operation of the tumblers, a second mem
55 ber operated by said tumblers and movable with
said support, and means controlled by said sec
tion of said tumblers will‘move said part and any
other operation thereof will change the rela 30
tionship of the parts so that thereafter a re
setting operation without the desired movement
of said lock part will be required before the
original selected operation will properly move
the part.
35
8. In locking mechanism, the combination
with a release part, of a combination look there
for, including means whereby a single incorrect
manipulation effects an increase in the number
of possible inoperative combinations of the lock.
40
9. In locking mechanism, the combination with
a release part, of a combination lock therefor,
including means whereby a single incorrect
manipulation of which squares the number of
possible combinations of the lock.
10. In locking mechanism, the combination
45
with a release part, of a combination look there
for, including means whereby a single incorrect
manipulation effects an increase in the ratio of
possible operative combinations to possible in
50
operative combinations;
11. In locking mechanism, the combination
with a release part, of a combination lock there
for, a single incorrect manipulation of which
effects a change in the operative combination of 55
the lock.
ond member for restoring the rock shaft to origi- ‘
12. Two combination lock devices so inter
nal position.
connected that the correct combinations must
3. In a combination lock, the combination of a
60 door handle, a set of tumblers mounted therein,
be ioperated in sequence to release the locked
par
.
-
60
?nger pieces for operating the tumblers, a plate
operated by the tumblers, a lock bar operated by
said plate, means for holding said plate in in
operable positio-n upon incorrect manipulation
65 of said tumblers, a second plate operated by said
tumblers, and means operated by said second
plate for releasing said holding means upon a
predetermined manipulation of said tumblers.
14. Two combination lock devices so inter 65
connected that the incorrect manipulation of one
will require the correct manipulation of both in
proper sequence to release the locked part.
‘l. In locking means, the combination of two
70 tumblers, a lock part to be moved by a pre
selected operation of said tumblers, and means to
effect such movement, said tumblers and means
being so related that one selected operation of
said tumblers will move said part and any other
75 operation thereof will change the relationship
tumblers, a release bar operated thereby, means 70
for holding the release bar in inoperative posi
tion, and a return bar cooperating with said
tumblers and said release bar to return the re
lease bar to its operative position;
16. In a lock mechanism, the combination of a 75
13. Two combination lock devices so inter
connected that the incorrect manipulation of one
will require the correct manipulation of both to
release the locked part.
15. The lock mechanism including rotary
9
2,121,060
plurality of tumblers, a plurality of devices oper
ated by the tumblers, and means: including inter
connections between said devices for rendering
one of them inoperative and for returning the
latter to operative position after having been
24. In a door handle lock, the combination of a
door handle having a shank part and a hand hold
part, a movable latch mechanism, a look bar to
connect the handle to ‘the latch mechanism
whereby the handle may operate the latch mech
rendered inoperative.
anism, combination lock mechanism having
17. In a combination lock, the combination
with a plurality of ?nger pieces, tumblers for the
tumblers with the lock bar to hold the bar in dis
?nger pieces, and a movable plate operated by
connected position, and ?nger pieces for operat
10 the ?nger pieces, of a second movable plate and
a second set of tumblers operated by the same
tumblers in said handle, means connecting the
ing the tumblers to move the lock bar to its con
10
necting position.
?nger pieces for another combination operation,
25. In a door handle lock, the, combination of
and means affected by operation of said plates.
18. In a combination lock, the combination with
15 ?nger pieces, tumblers for the ?nger pieces, and a
movable plate operated by the ?nger pieces, of a
lock release mechanism to be operated by said
movable plate, means rendering said mechanism
inoperable upon incorrect manipulation of said
tumblers, a second set of tumblers operated by
said ?nger pieces, and means operated by said
second set of tumblers for restoring said mecha
a door handle having a shank part and a hand
hold part, a movable latch mechanism, a lock
nism to operable position.
19. In a combination lock, the combination with
?nger pieces, tumblers for the ?nger pieces, and a
movable plate operated by the ?nger pieces, of a
lock release mechanism to be operated by said
movable plate, means rendering said mechanism
inoperable upon incorrect manipulation of said
30 tumblers, a second set of tumblers. operated by
said ?nger pieces, a second movable plate co
operating with said second set'of tumblers, and
means operated by said second plate for restoring
said mechanism ‘to operable position.
35
20. In a combination lock, the combination of a
mechanism, combination lock mechanism having
tumblers in said handle, means connecting the
tumblers with the lock bar to hold the bar in
disconnected position, means to operate the 20
tumblers to connect the lock bolt and means
whereby an incorrect manipulation of said
tumblers renders the ?rst operating means in
effective}
26. In a lock mechanism, the combination of 25
tumblers, ?nger pieces for operating the tumblers,
a movable device for operating the lock mecha
nism after the correct ?nger piece combination
has been e?ected, interconnections between the
tumblers and said device for effecting unlocking 30
movement of said device with correct combina
tion movement of the ?nger pieces and for effect
ing inoperativeness of said movable device with
incorrect combination movement of the ?nger
pieces.
35
set of ?nger pieces, two sets of tumblers for said
?nger pieces, an operating plate for one set of
27. The combination with a combination lock
comprising several movable devices so constructed
tumblers and an operating plate for the other
set of tumblers, and means affected by operation
that a single hand movement of one or more of
said devices will release the lock, of means asso
of said plates.
21. In a combination lock, the combination of
a set of ?nger pieces, two sets of tumblers for said
?nger pieces, an operating plate for one set of
tumblers and an operating plate for the other set
of tumblers, means operated by one plate for
ciated therewith for rendering said devices in 40
operative to release the lock, and means to re
store said devices to operativeness, said asso
ciated means constructed to operate by a wrong
hand movement of the combination lock.
28. The combination with a combination lock 45
comprising several movable devices so constructed
either a releasing movement or an additional
locking movement, and means operated by the
other plate for reversing said additional locking
v50
bar to connect the handle to the latch mechanism 15
whereby the handle may operate the latch
movement.
22. In a combination lock, the combination of.
several tumblers, means for manipulating various
combinations of said tumblers, means effecting
release of the look by manipulation of a selected
one of said combinations of tumblers and render
that a single hand movement of one or more of
said devices will release the lock, of means asso
ciated therewith for rendering said devices-in
operative to release the lock, and means for re 50
storing said devices to operativeness, said latter
means including part of said devices and com
prising devices so constructed that a single hand
movement of one or more of them will effect said
ing said combination ineffective by manipulation
restoration to operativeness.
of any other of said combinations, and means for
29. In a combination lock mechanism, the com
bination with a lock element, of means for actu
restoring the e?ectiveness of said release means
by manipulation of a selected one of said com
binations which may or may not be the same as
60 the ?rst said selected combination.
23. In a lock mechanism, the combination of a
movable lock member, a combination lock having
a pivoted member and tumblers on the pivoted
member, means whereby correct manipulation of
the tumblers and pivoting of the pivoted member
65
in one direction will release the lock member, and
pivoting of the pivoted member in the reverse
direction will lock the lock member.
55
ating said lock element, said means comprising
devices affording several manipulative combina
tions, the construction and arrangement of said 60
means and devices being such that one only of.
said combinations will actuate said lock element
and any other of said combinations when manipu
lated will render the ?rst said combination inf
effective until the same or another of said com
binations has been manipulated.
MILTON TIBBETTS.
65
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