Note: Descriptions are shown in the official language in which they were submitted.
BACKGROUND AND SUMMARY OF THE INVENTION -
The invention herein relates to a lock structure
wherein the improvement consists of a plurality of cylindri-
cal members having inter-engagement, having limited relative
~~ movement and being ~s~e~ progressively in rotation by
operating means whereby all of said cylindrical members rotate
` 20 as a unit to fully actuate a latch operating member.
-: The essential improvement herein consists in an
arrangement whereby each of said cylindrical members includes
one or more tumblers and said tumblers must be engaged and
operated in a given order to rotate said cylindrical members
in the operation of the lock. Said tumblers may vary from
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6~one another in specific detail as to their structure and as
to their operation by an operating member to make the lock
structure a very secure lock and to provide for a very large
member of diferent specific arrangements for the operating
member.
It is an object of the invention therefore to
provide a lock device comprising a plurality of inter-related
cylindrical members and operating means, whereby said cylin-
drical members progressively join one another in a given
order for rotation unit all of the cylindrical members are
rotated as a unit to move a latch actuating member to an un
locking position.
It is a further object of this invention to provide
a lock device comprising a plurality of cylindrical members,
each of said members having mounted therein one or more tum-
blers, said tumblers normally securing said cylindrical
members in a non-rotating locked position and an operating
member arranged and constructed to engage and operate said
tumblers in a given order for the rotation of said cylindri-
cal members.
It is more specifically an object of this inventionto provide a lock device comprising a housing, a plurality
of inter-related cylindrical members in said housing with
each o said members having limited relative movement and
which progressively join one another in a given order~for
rotation, each o-f said cylindrical members having one or
more tumblers normally holding said cylindrical members in
a non-rotating locked position, a latch operating member
carried by said housing and having integral rotation with at
least one of said cylindrical members and a key member dis-
posed in said housing arranged and constructed to engage said
tumblers in a given order for a progressive rotation of said
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cylindrical members in a like order until all o-f said cylin-
drical members are rotated as a unit for rotation of said
latch member to an unlocking position.
These and other objects and advantages of the inven-
tion will be set forth in the following description made in
connection with the accompanying drawings in which like refer-
ence characters refer to similar parts throughout the several
views and in which:
Fig. 1 is a view in end elevation of one end of the
device herein with portions thereof shown in dotted line;
Fig. 2 is a view in side elevation with portions
thereof being shown in vertical section;
Fig. 3 is a view in end elevation of the other end
of the device;
Fig. 4 is a view in vertical longitudinal section
taken on line 4-4 of Fig. 1 as indicated with a portion thereof
being broken away;
Fig. 5 is a view in vertical cross-section taken on
line 5-5 of Fig. 2 as indicated;
Fig. 6 is a broken view in vertical longitudinal
section taken on line 6-6 of Fig. 5 as indicated;
Fig. 7 is a view in vertical cross-section taken on
line 7-7 of Fig. 6 as indicated;
Fig. 8 is a view in vertical cross-section ~aken on
line 8-8 of Fig. 4 as indicated;
Fig. 9 is a view in vertical cross-section taken on
line 9-9 of Fig. 4 as indicated;
Fig. 10 is a view in vertical cross-section taken
on line 10-10 of Fig. 4 as indicated.
Fig. 11 is a view in longitudinal vertical section;
Fig. 12 is a view in vertical cross-section similar
to the view in Fig. 9 showing a modification thereof;
Fig. 13 is an exploded view.
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DESCRIPTION OF A PREFERRED EMBODIMENT -
Referring to the drawings, a lock structure 10 isshown which in the embodimen~ here presented is descrlbed as
comprising a cylindrical tubular housing 12 having a bore 13
therethrough and having disposed therein a plurality of mem-
bers 15-18 cylindrical in form and the same will be further
described in detail. It will be understood that said members
may vary as to number.
End plate or cap members 20 and 23 respectively
enclose the ends 12a and 12b of said housing and the same are
secured by screws 25. Said end member 23 has an extended
annular flange portion 23a to form a face plate to overlie an
opening A as in a door structure.
Secured to the outer side of said cap member 20 is a
latch or bolt operating plug member or plug 29 having a cylin-
drical base portion 30, the same having a latch engaging por-
tion 31 non-circular in cross-section projecting therefrom.
Said end cap 23 has a key hole opening or key way
33 centrally therethrough having a circular central portion
3~ and a pair of diametrically opposed outwardly extended
ears 35.
Disposable through said opening 33 and axially of
said members 15-18 as will be described in detail is an
operating member or key 38 which will be further described.
Referring now to the members 15-18, member 15 abuts
the end cap member 20. Said end cap member 20 has a pair of
opposed arcuate slots 41 therethrough and said plug member 29
is secured to said member 15 by screws 42, said screws ex-
tending through said slots whereby said plug member and said
member 15 having unitary rotary movement to the extent of
said slots.
Said member 15 has an end wall portion 43 with a
cylindrical bore 44 extending therethrough and a counter-bore
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45 through the remaining portion of said member 15 as indi-
cated in Fig. 6.
A slot longitudinally of said member 15 extends
through a side wall portion thereof as shown in Fig. 6. A
flat dog member 51 is disposed in said slot pivotally held
therein by a pin 52 for vertical swinging movement longitu-
dinally of said member 15. Said dog member has an ear 53
projecting thereabove and a depending leg portion 55 extending
into said bore 45. A spring 57 is recessed into said end
wall portion 43 as shown in Fig. 6 and beaTs against the
adjacent portion of said leg and normally urges said ear 53
upwardly and outwardly of said slot 50 as will be further
described. ~rojecting forwardly of the forward end wall
portion 59 of said member 15 parallel to its axis is a pin 60.
A shaft of rod 63 is secured as by threading into
said end cap member 20 centrally thereof as ill~strated and
; said shaft extends axially through said member 15 and through
said housing substantially to the p.Lane of the other outer
end of said housing.
The members 16-18 are alike in structure with one
difference which will be described. Hence only member 16 will
be described in detail and the corresponding parts of members '~
17-18 will bear corresponding reference numerals with a prime
and a double prime respectively being added.
Said member 16 comprises a cylindrical plug having
a bore 66 therein as indicated in Fig. 8 and having a counter-
bore 69 extending throughout the remainder of said member.
Said bore corresponds in transverse cross-section to the con-
figuration of said key hole opening 33 and forms a key way.
An arcuate slot 70 is formed into the rear wall portion 16a
of said member.
Diametrically opposed open ended open top slots 72
and 73 are formed in the wall portions of said member 16
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having said counter-bore therebetween as shown in Fig. 8.
Pivot pins 75 and 76 respectively project outwardly ~rom said
slots in a direction longitudinal o~ said member 16. Re-
spectively pivoted on said pins are tumblers 82 and 83 o~ a
orm as illustrated.
Saicl tumbler 82 has an outwardly projecting ear 85.
Seated in a wall portion o~ said slot 72 and bearing against
a portion o said tumbler underlying said ear 85 is a spring
member 88 here shown as a coil spring. Said spring normally
wrges said ear upwardly of the outer sur~ace o~ said member
16. Formed in the bottom wall 90 of said tumbler 82 is a cam
or shoulder portion 91.
Sa:id tumbler 83 is iden~ical to said tumbler 82 as
to structure and operation except for being in a reverse
opposed position and it has an outwardly projecting ear 84 and
an underlying shoulder portion 92. The slots 72 and 73 are
o~ a configuration as illustrated to permit ~ree swinging
movement o~ said tumblers. It will be understood that said
tumblers and their respective spring members may be otherwise
Eormed.
Proje~ting forwardly of the ront end wall portion
16b oE said member 16 i5 a pin 9~. ~ like pin 94' projects
~orwardly o the member 17. The member 18 has no forwardly
projec~ing pin.
Said pin ~0 extends into the arcuate slot 70, the
pin 9~ extends into the arcuate slot 70', and the pin 94'
extends into the arcuate slot 70". Said members 15-18 may be
inter-engaged other than as here shown.
The arc~late sLots 70, 70' and 70" permit each member
15-17 to have a limited relative rotational movement. With
movement oÇ said members 15-17 in a clockwise direction, said
arcuate slots are positioned in staggeretl spaced relation in
saLd clockwise direction whereby said members 15-17 will have
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progressive sequential rotational movement. As each member
15-17 reaches the end of the extent of its independent or
relative movement, it then has unitary movement with the next
adjacent member for a continuing progressive rotational move-
ment until all of the members 15-18 rotate as a unit.
Formed on the inner wall portion 12c of said housing
are a plurality of circumferentially staggered and longitudin-
ally spaced longitudinal grooves 97, 99, 101 and 103. The
members 15-18 are positioned within said housing 12 to have
their respective pins 60, 94 and 94' and the corresponding
slots 70, 70' and 70" in a staggered clockwise circumferential
or rotational relationship with the projecting ears 53, 85, 85'
and 85" being respectively aligned with and received into said
grooves 97, 99, 101 and 103.
Grooves 100, 102 and 104 are formed in diametrically
opposed relation to said grooves 99, 101 and 103 to receive
therein the projecting ears 8~, 84' and 84". Said ears of
their respective tumblers must be withdrawn from their respec-
tive grooves for rotational movement of each of the members
15-18.
The key member 38 is here shown comprising a tubular
shaft or barrel 110 circular in cross-section and having a
bore 112 therein and a handle 114 secured to the outer end
portion thereof as a cross member as illustrated in Fig. 11.
At the inner end portion 115 of said key member are
a pair of opposed open top longitudinal grooves 116.
Upon insertion of the key member into the key open-
ing 33 of the end cap member 23 and into the housing 12
through the respective bores of the members 15-18, the upper
of said grooves 116 will receive therein said depending leg
member 55 and the end wall 117 of said groove will engage and
move said leg membér against the pressure of said spring 57
and thus the ear 55 is withdrawn from the groove 97 to permit
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the member 15 to rotate with rotation of the key member in
a clockwise direction to the extent of the movement of the
pin 60 in the arcuate slot 70 of the member 16.
As above described herein the plug member 29 in
being secured to the member 15 through the slots 25 has inte-
gral movement therewith.
Projecting from the shaft 110 of said key member
38 in the embodiment here presented are diametrically opposed
pairs of lands spaced longitudinally of said shaft to respec-
tively engage the respective opposed pairs of shoulders ofthe respective tumblers of said members 16-18. By way of
example, the lands 120-121 engage the shoulders 91-92 of the
tumblers 82 and 84 of the member 16.
Just as the member 15 has been rotated clockwise
to the extent permitted by movement of the pin 60 in the
slot 70, at this point, said lands 120 and 121 engage said
shoulders 91 and 92 to swing the tumblers 82 and 83 in op-
posed d;rections for withdrawal of the ears 85 and 84 from
the grooves 99 and 100. The member 15 is thus rotated to-
gether with the member 16 to the extent permitted by movemento-f the pin 94 in the slot 70'.
In like manner, the lands 122-123 engage the
tumblers of the member 17 to withdraw said tumblers from
their respective grooves for rotation of the member 17.
Rotating with the member 17 will be the members 15 and 16
until all have rotated to the extent allowed for movement
of the pin 94' in the arcuate slot 70". At this point, the
lands 124-125 engage the tumblers of the member 18 for with-
drawal of the respective ears of said tumblers from their
respective grooves for rotation of the member 18. Rotating
with the member 18 will be the members 15-17 and all of
said members then rotate as a unit to the extent of movement
permitted the screws 42 in the slots 41. The slots 41 permit
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sufficient rotational movement for said plug member 29 to
withdraw a latch member from a keeper (not here illustrated)
to unlatch a locking mechanism.
Thus it is seen that the members 1~-18 by means of
the pins 60, 9~ and 94' being disposed into the arcuate slots
70, 70' and 70" are inter-connected and that there is a pro-
gressive sequential rotation of the members 15-18.
The lands of said key 38 must engage the respective
tumblers of the members 15-18 for rotation of said members.
In connection with engaging the respective tumblers,
each of the lands must be of no greater length than the length
of its counter-bore chamber of the respective members 16-18
in order for the key to rotate. Any greater length of a land
than the length of its respective counter-bore chamber, will
result in a portion of the land extending into a bore of the
same or of an adjacent cylindrical member or in the case of
the cylindrical member 18, the land will not fully insert
into the housing and the key member will not be able to rotate.
The respective bores of the numbers 16-18 have the same con-
figuration as the key hole 33 and do not permit the rotation
of a land therein. Reference is had here to Fig. 11 wherein
said lands are shown with relation to their respective counter-
bores.
The lands must be of a precise height to suitably
engage and swing their respective tumblers to withdraw the
same from their lock positions.
It will be noted that the tumblers though here shown
in opposed aligned relationship may be in various degrees of
opposed offsetting relationship or there may be but one
tumbler in each of the members 16-18 and the lengths of the
bores and counter-bores will be designed and arranged ac-
cordingly. Thus there is an extremely large number o-f com-
binations possible for key variations. The tumblers may be
otherwise designed as to configuration.
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A modification is shown in Fig. 12 in which is
shown the structure of Fig. 9 with like reference numerals
and the added structure is indicated by new reference
numerals.
The tumblers 82' and 83' having additional pro-
jecting ears 86' and 87' respectively added thereto. Corres-
ponding with said ears and positioned to receive the same
therein are longitudinal grooves 105 and 106 formed in the
adjacent side wall portion 17 of the housing 12. Like ears
may be added to other of the tumblers above described or to
all other of s-aid tumblers and grooves adapted to receive the
same will be formed within side wall 17 of said housing.
Thus with this modification, if a land does not
precisely engage and operate or rotate its respective tumbler
a precise distance, to withdraw the same from its respective
groove, then the added ears of said tumbler will be moved
such a distance as to be received within and locked in their
respective grooves. For example, the ears 86' and 87' will
be moved sufficiently to be received within the grooves 105
and 106 to lock the cylinder 17 against rotation. This
structure makes it unusually difficult for any one to attempt
to devise a key for the purpose of picking the lock.
From the above description it is seen that there
has been provided a relatively simply made lock having inter-
connected and inter-related parts which make it very difficult
for a key to be made to pick the lock.
In the above description, the key member 38 has
been described as rotating the cylindrical members 15-18 in
a progressive sequence. It will be understood that said key
member may have its lands arranged with a corresponding change
in the initial staggered relative positions of the respective
tumblers of said cylindrical members such that the cylindri-
cal members are not rotated in a progressive sequence as
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described but in any desiTed order to ultimately rotate said
cylindrical members as a unit to move the latch plug 29 to
an unlock position.
Thus there are present an infinite number of
variations for key arrangements.
It will of course be understood chat various changes
may be made in form, details, arrangement and proportions of
the parts without departing from the scope of the invention
herein which, generally stated, consists in an apparatus
capable of carrying out the objects above set forth, in the
parts and combinations of parts disclosed and defined in the
appended claims.
