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Патент USA US2406332

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Patented Aug. 27, 1946
William W. Hurtel, Los Angeles, Calif.
Application April 25, 1944, Serial No. ‘532,641
5 Claims.
This invention relates to >a keyless'lock.
Speaking more specifically the invention per
Figsnl and> 5’are cross sections of the device
taken respectively on the planes `indicated vby
lines 4-4 and 5-5 on Fig. 1.
Fig. y6 is a perspective view showing an-ex
» ample of a >combined «bolt carrier and tumbler
stop plate which maybe substituted for the cor
responding plate of Fig. 1 to varythe combina
tion of tumbler elements which it is necessary
to adjust before the locking bolt can be released.
tains to a lock furnished with a series of tumblers,
a predetermined group of which lmust be moved
from their normal position until arrested by stops
While all the remaining tumblers remain undis
turbed, before the boltof the lock can be re
leased, all the tumblers of the lock being man
ually operable so that the initiated person, who
knows what combinationof tumblers must be
adjusted to release the bolt, can operate the lock
without using a key.
Fig. 7 is a detailed perspective view of a single
special 4tumbler which is `one of alpair of tumblers
which cooperate with `the vsame` stop means on
Among a great number of situations wherein
the invention may be used to advantage,` may
the bolts or vbolt carriers. '
be mentioned for locking garages,- gates, all types
of out buildings, farm buildings, and for locking
oñlce doors and entrances through railing and
other office partitions, .and 'for locking various
other'tumbler of the v‘above -mentioned pair.
Fig. 9 is a 4cross `sectionpn " line 9_9 of Fig.'
1, illustrating stop meansf'which cooperate’with
a specific: group of tumblers'the midwidthrpart
types of drawers, cabinets, cupboards, vand the
Among the vobjects of the invention lare to
provide, for interchangeable use in the lock, a
set of improved tumbler stop members foreach
Y'Fig. 8 isa detailed perspective view ofthe
of theï'device `being'broke'n out to contract the
Fig. 10' is a perspective view of analternative
construction,` showing-a >locking boltwhich does
not require a carrîerfand‘fembodies in itself the
stop means lwith which the "tumblers cooperate.
Fig. 11 is a perspective view 'of the device modi
ñed for use principally to lockîliftable doors, the
enclosed portion of'the locking’bolt-of Fig. 10
being `usable infthissan‘d `similar situations >or
wherever >locking bolts «of this moidiñed design
lock, said members desirably consisting of strips
of rigid sheet material capable of being stamped
out at low cost by dies, or of being made from
plastic material; toprovide tumblers‘which are
particularly well adaptedvfor being ymoved from
their normal to their adjusted position by being
directly engaged by the ñngers‘of the operator;
are required.
and to provide a set of manually liftable'tumblers
which can be more safely depended on to gravi
AReferring in detail to the drawing, the elon
gated casing'shown comprises .a generally-rec
tate from their lifted, stop-releasingpositionfto
tangular face plate |2,`-back plate lf3 ‘and fast
their normal locking position.
ening means‘shown` as bolts `,i4 passing through
Other objects, advantages and features of Vin 1355 corner portions ofthe `casingto hold -said ytwo
vention will hereinafter appear.
plates together. ` Suitableñanges »are Ashownon
Referring to the accompanying> drawing, which
said plates to close in the sides and ends of the
illustrates what are at present deemed to be
casing, said’ face plate having along its upper Y
preferred embodiments of the invention,
edgev a -backwardly @directed 'flange »,I 5 whichv „en
Fig. 1 is a `iront elevation ofthe device lwith
gages the router face of alike liange I6 of` the
Athe face plate and operating handles removed;
back plate. Corresponding `to lsaid 'flanges' `I5
the tumblers being in bolt releasing position. -A
and l-E, the :casing plates have bottom flanges
few parts are sectioned on line I-I of Figs. 2
l1 rand I8, but‘these arecutqa-way atwlßßasshown
and 4, and some other parts are broken away
in order to disclose underlying structures.
Fig. 2 is in general a longitudinal section of
Vin Figs. 4, k5 >and 11"` (the latter being -a modi
' ñcation in regardto the locking bolt only),- to
provide manual access > to the liftable Vtumblers
the device, including theface plate and handle
means, the. plane of section being indicated by>
the line 2_2 on Fig. 1. In this view the spring,
the locking bolt and a portion ofthe operating
knob and of certain tumblers are shown in side
2l andI a’locking .bolt` carrier 22. » Said bolthas
a lbeveled lockinghead 23 Aand the vcarrier is pro-1
vided yat its back side with »a projection v'I4-jat
Fig. 3 is another longitudinal section of the
device, the plane of section being `indicate‘dxby
angular line 3-3 on Fig. 5.
The elongated locking `member of Figs.- 1 to
`5 consists `of vtwo principal parts, a locking `bolt
fording ashoulder .f2-4a' which may be used to
limit theretraetive movement of Ythe bolt. «Ad
jacentrto its oppositeforinner end` said bolt car.
tumbler has an arcuately rebent end portion 31b
the terminal part of which also parallels and is
spaced away from the body portion of the tum
bler. lIlhe offset parts 31a and 31b are both di
rected toward the front side of the casing; The
tumbler 31 also has a notch 31c cut centrally in
lrier has another projection 24h, said two pro
ïjections spacingthe intervening portion of the
Ibolt away from the back plate I3, thereby pro
ìviding a working clearance for the tumblers
`hereinafter described.V Also the bolt has at itsy
` inner end a preferably integral stem 25, the end
its left edge as a space economizing feature, said
î of which carries a head 26 which alines with the
notch providing additional space for the travel
body portion of the bolt.
of the projection 24 of the shoulder 24a of the
Returning to the bolt carrier 22, this member
` is shown formed ofja single piece of rigid metalV 10 locking-bolt carrier or "shoulder 24a of the sub
or plastic sheet material which isvshaped to form ’
a channel having interrupted side wallswithin `
stitute locking member 16> >of Fig. 10, when the
latter is used.
The tumbler 38 has a forwardly deflected upper
end portion 38a. which carries, preferably integral Y
therewith, a rectangular plate 38o which corre
spondsvin position and function to the terminal
rebent part of 31a of the tumbler 31,Y for both
part 31a, and 38e engage the flange 35 of the bolt
` '
i carrier to obstruct retraction of the locking bolt
20 whenever the tumblers _31 and 38 are ‘allowed to
g which the boit 2| is fitted to move longitudinally -.
Í in relation to the carrier from an extended to a
retracted position, this movement automatically
taking place> when a door carrying the lock is
moved to a closed position causing the beveled
. head of the bolt tobe retracted by engaging a
l striking plate mounted at one side of the door
In order to utilize the bolt carrier as a tumbler
l controlled means for manually-retracting the bolt
. said carrier has a bolt operating endfedge por- `
gravitate to their lower position. n From Fig. '1 it is
seen that said plate l38e is albout twice -as long as
wide and has one of its cornerportions secured to
the part 38a, and the leftward extentof the plate
3 tion’or flange portion 21 which has its-back edge
I deeply notched at 21al to provide a working clear 25 being suiñcient to span the space occupied Aby the
tumbler 31, so that Athe tumbler 38, as well as 31
1 ancefor theV aforesaid bolt stem 25.l At times
may engage the bolt carrier flange ¿35 to obstruct
3 ,said Aflange 21- is moved against. the head 26 of i
‘ the stem 25l to retract the bolt 2 l , both retractive
` ,movements ofthe bolt being opposed by a coil
retraction of the bolt 2 l, hence either one or both
of- these tumblers can make Vthis obstruction.
lower end portion of the tumbler 38 l(from l
spring .28 oneiend of which engages the head 26 30 The
the viewpoint of its mounted position) has a
rebent part 3817 corresponding size, shape and
~ and Vthe, opposite end of which abuts against a
` casing -end wall formed bya flange 29 carried`
by the back plate of the casing. Sheet metal,
position to the already described part 31h rof
or plastic, spacing boxes 30and V3| are shown to ,
tumbler 31,
mentroftthe locking bolt `2| and carrier 22. 1
.. In orderzto secure the desired cooperation be-y
1.y Each of these tumblers 40 ter
minates at its upper‘end in a flange 40a which
is kforwardly directed at a right anglev to the body
Fig. 9 is shown a'tumbler 40 which is typical
fillin properly the spaces at each sideof said 35 of In
three tumblers- designated by same nu-`
spring and'alsoto .assist in guiding `the move- l
tween'the bolt carrier 22 and the adjustable tum
blers presently to kbe described, said carrier is
`furnishedalong each of its sides with' a series
of the tumbler.
The already mentioned casing flange I6 has a
downwardly directed lip |611. Said lip extends
of stopsjthese, stops being lformed by angular
along the entire space occupied by all the tum~
ñan'ges with which said carrier is provided w‘hen
blers‘shown and serves as a stop means to limit
it is stamped out of sheet metal, orv otherwise
the downward gravitation Vof each of the three
manufactured; The vcharacter of these, stop 45 tumblers 40, andit also supports them in a bolt
ñanges is mostclearly shown in Fig. 6, which
view, however, shows a carrier 22a: having a Vdif
ferent'arrangeme‘nt of said stop flanges, for it is` _
releasing position. If a person who does not
know the combination raises oneor more of these
tumblers 40, he will be as positively locked out
designed with a' View to being substituted for said
as he'would be if he failed tok raise anyone' or
carrier 22 or for any other pattern of carrier 50 more of the' other Yfour tumblers., It is necessary
belonging to a, set of combination-changing car
thatA said lip'lBy extend along the entire space
riers to `>be- used Ywhen it is'desired to change
occupied by the tumblers; as'above stated, in
the combination of tumiblers which must-be oper-`
order to make the tumblers and the two carriers
ated in -orderrto release the locking bolt. '
22 and 22:1: (or additional ones) interchangeable
i ` Describing from left'to right (Figs. l, 2 and 3),`
in making changes in the combinations.
v'the stop flanges of the carrier 22”,y and the> tum-V
' >Each tumbler 40 is shown furnished witha re
blers which cooperate with them, the stop flange
bent Vlower end portion 40h, which feature is
35 extends from the upper side of the carrier
found in alll the tumblers-40. Also allfof said
nea?/ its left end and is of the same rightangular
three tumblers, as indicated at z in various places
shape as the flange 36 which extends from the 60 in the drawingare shown having'a finger de
opposite side of the bolt carrier a little farther
pression w-hichmakes it easier, particularly when
to the right >(see Fig. 6 also), but said flange 35
operating the lock in the darkness, to locate the
is muchr narrower than said flange 36. With the
fingers on only the proper tumblers to be oper
stop vshoulder afforded by the right hand edge .of
the _flange 35 cooperate the tumblers 31 and 38,
which'are respectively separately shown in Figs.
8 and '1, vthe locking bolt being retractable only
lwhen both of these adjacent tumblers, along 'with
'certain `others„«a_re' lifted from their locking posi
tion to the position shown in Fig. 1. Said tum
‘ble'r 31 is Shown having at one end a right angular
deflected and then'reben't upper ’end .portion 31a
the'terminal part` of whichparallels the 4bo'dy
` Y portion >ofthe tumbler-in a considerably spaced
Referring to additional stop shoulders of the
. bolt carrier 22,»‘besides those already mentioned
in connection .with its flanges 35 and 36, these
additional flanges willV be more readily under-stood by noting ñrst the similar `stop flanges of
vthe substitute bolt carrier 22a: of Fig. 6, which is
furnished from left to right with angular stop
flanges a, b, c,'d, e_ -and f. >From the upper sideof
the bolt carrier 22 project (naming them from left
Ytoright), angular stop flanges 4I, 42 and'43, each
'relation thereto, and at its VOpposite end this 75
of l whichare shaped> like. .the .. flanges sc.> and .e :of
movablefgarage?oor .to .the flooror-:doonsillfof
Fig:l 6. Theîsamefzside ofthegfbòltcarrier ¿122 :also
the garage.V ¿It isttoV bei understood that Vthis'modi»
has two intervening .bolt channel forming flanges
ñedflockzwillbe attache-d_ftothe’lower edge por
44, one of vwhiclrappears section in'Fig.fI5,
tions 'offsuchigarage doors, so thatfthe user, .after
sides the channelforming ñanges'dlzü and‘ldß 5 lifting
the.lockfreleasingtumblers, will continue. '
dottedly indicated in Fi'g.l1. Alongithe; lower :side
the upward -pressure ¿of his :fingers tol open Vthe
of the carrier, from left: to right are the channel
forming flanges 49, 50, 5| and 52 (the latter a
long llange) , dottedly indicated in Fig. 1; and, in
addition to the broad stop forming flange 36
door, the flock :constituting a _» handle .means 1 for
lifting the door to its open position.
I claim:
l. In a lock of the kind described, a casing, an
already mentioned, the angular stop forming
elongated at times longitudinally movable lock
lianges 53 and 54.
ing bolt carrier mounted in said casing, a lock
I'I'umblers 56o and 51 alternate with the afore
ing bolt carried by said carrier and independently
said tumblers 40. These intervening tumblers
movable in a lengthwise relation thereto, said
will be readily understood from the sectional 15 locking bolt being given its independent move
showing of tumbler 51 in Fig. 5, it being under
ment by closing the door, said carrier consisting
stood that these two tumblers are alike except
of rigid sheet material having oppositely pro
that 51 has a slot 51s cut into its lower end to
jecting side flanges to form tumbler engaging
allow a turnable headed pin 59 to pass through
and a series of elongated tumblers the in
the casing, said pin having tightly secured to it 20 stops,
dividuals of which extend in a crosswise adja
within the casing a forked arm 60 which strad
cent relation to said carrier to cooperate with
dles an apertured edge portion of the llange 54
its stops and are supported by said casing for
of the locking bolt carrier. Arm 60 may be suit
selective manual longitudinal movement to ad
ably modified for connection with the locking
just them to release said carrier to permit of its
bolt itself if no locking bolt carrier is used. A 25 retraction together with the locking bolt which
thumb piece 6I is secured to the projecting front
it carries.
end of said pin 59 to afford a means for retract
ing the locking bolt carrier, or the locking bolt
when no carrier is used.
A screw 62 is shown
2. In a lock o_f the kind described, a casing, an
elongated at times longitudinally movable lock
ing bolt carrier mounted in said casing, a lock
screwed into a socket provided for it in the «pin 30 ing bolt carried by said carrier and independently
59 to attach the thumb piece to the pin.- This
movable in a lengthwise relation thereto, said
thumb piece, however, is only an auxiliary means
carrier consisting of rigid sheet material and
for retracting the bolt carrier 22, or the bolt only.
There is also shown a retracting knob >63 which
having an elongated back plate portion furnished
along each of its side edges with an inner row
is fastened onto athreaded stud 64, the inner 35 of angularly directed flanges, said ilanges and
end of which is welded or otherwise secured to
plate portion cooperating to form a channel With
the locking bolt carrier, or to the locking bolt
in which the locking bolt has a working fit, and
itself when no carrier is used. 'I‘he face plate I2
other flanges projecting from said back plate
of the casing has through it a longitudinal slot
portion which alternate with the ñrst recited
65 to unobstruct the movement of said stud 64. 40 ?iianges along each side of said carrier to form
When thin sheet material is used to construct
stops, and adjustable tumblers carriedby the cas
the bolt carrier, a, reinforcing head 66 (Fig. 2),
ing to cooperate with said stops.
may be welded to the screw and to the sheet
3. The subject matter of claim 2, and the last
metal of the carrier, the locking bolt being pro
recited ñanges having their inner portions in the
vided with an elongated recess 61 extending lon- ¿7^ same plane as said plate portion and their termi
gítudinally thereof »to provide a working clear
nal portions projecting toward the channeled side
ance for said welded-on head.
of said carrier.
IIt will Ábe observed that the various tumblers
4. In a lock of the kind described, a casing, an
shown consist of straps of rigid sheet material
elongated locking member mounted therein to be
which have their end portions bent toward the El) longitudinally moved at times, said member car
same side to provide them with sturdy, easily
rying a longitudinally extending series of later
manufactured stop-engaging flanges.
ally projecting stops, and a series of manually
In Fig. 10 is shown a modiñed locking bolt 10
adjustable tumblers carried by said casing to co
the body portion of whichhas, naming them»
operate with said stops, said series of tumblers ,
from left to right, a series of stop projections 55 comprising a pair of adjacent tumbler strips of
10a, 10b, 10c, 10d, 10e and 10f, these stop pro
rigid material which are slidable transversely in
jections respectively corresponding in size and
relation to said looking member, and both of
position to the stop means afforded by the flanges
which cooperate with the same stop of said lock
a to f of the substitute bolt carrier 22x. The end
ing member, the members of said pair of tumbler
portions of the modiñed -locking bolt 10 are of 69 strips occupying different adjacent positions in
the same shape and size as those of the locking
relation to the length of said locking member,
bolt 2| except that the latter bolt has a beveled
and one of them having an extension which
head 23, whereas the modified bolt has a square
reaches across the other and is engageable with
head 23x. A notch 10n is provided in projection
the same stop on said locking member as that
10i of the bolt 16 to provide an operating space (55 with which its mate cooperates, thereby causing
for the retracting arm 60 carried by the manu
said paired tumbler members to perform the same
ally turnable pin 59, it being unnecessary to slot
function in the same manner, and making it nec
said arm in this situation.
essary to operate the two of them as a unit in
In Fig. 11 the lock is shown on a reduced scale
constructed the same as in Figs. l, 2 and 3 except
that the locking bolt is provided with an exten-`
sion 12, shown directed downwardly, carrying at
releasing the locking member for retraction.
5. In a lock of the kind described, a casing, an `
elongated locking member mounted therein to be
longitudinally moved at times, said member car- `
its lower end a beveled latching head 13. Among
rying a longitudinally extending'series of later
other uses to which the lock of Fig. 11 is adapted
ally projecting stops, and a series of manually
to be put is to lock an upwardly and downwardly. 75 adjustable tumblers carried by said casing to co
‘ operatewith said stops, said series of tumblers `
` comprising a pair` of adjacent> tumblers which are ‘
‘ slidable transversely in relation to said locking
§ member, and both otwhich cooperate with the
j same stop of said locking member, the tumblers
Í of said pair occupying different adjacent posi
` tionsr ín relation to the length of said locking
member and one' of themhaving an extensión
which is vengage'zalble with the same stop on said>
locking member as that with which its mate co
operates, thereby'makìng it necessary to operate 'Y
both of the tumblers of said pair before the lock'
ing member can be released.
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