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Sept. 24,1946.
5. LARSSQN
LOCKING
-
MECHANISM
,
Filed Jan. 15, 1945
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"S ven-Larsson
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Sept. 24, 1946.
s. LARSSON
2,408',@24 ,
LOCKING MECHANISM
Filed Jan. 15, 1945
,4 Sheeis-Sheet 2
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Mvem‘or
Attorney
Patented Sept. 24, 1946
2,408,024
UNITED STATES. PATENT OFFICEv
Application January 15,1945, Serial No. 572,942
In Sweden November 16, .1943 .
10 Claims.
1
(Cl. 70—150)
2
The present invention refers to a locking mech
anism of the type, comprising a tubular cylinder
enclosing a slid-ably ?tted bolt, the retraction of
which is effected against spring action by means
of a rotatable disk disposed behind the locking
bolt in the tubular cylinder. Such locks are
Fig. 27 is a View of those parts rigidly con- >
the mounting thereof incurs but low costs, it be
neoted to the bolt in the locking mechanism.’
Fig. 28 is a view of another form of the bolt
and part of the elements rigidly connected there
to.
Fig. 29 is a section along the line XXIX—XXIX
in Fig. 28.
Fig. 30 is another form of the abutment ele
ing'possible to bore a hole in a door for the re
ment.
known per se and are advantageous inasmuch as
7
ception of the tubular cylinder and avoid other~ ‘10. Fig. 31 is a vsection along ' the line
: XXXI-XXXI in Fig. 30.
wise necessary 'chiselling out of the mortise.
A' more particular object of the invention is
Figs. 32 and 33 show two di?erent forms of the
key-bit.
‘
to provide a simpli?ed and cheaper form of such
Fig. 34 shows another form of the disk and the
a locking mechanism which, if desired, may be
provided with a tumbler for the bolt.
15. end plate.
The special characterizing feature of invention
In Figs. 1-3 the reference numeral I designates
the door in one of the vertical edges of which
the locking mechanism according to the invention
is mounted, and which‘ at the opposite edge there
bular cylinder and that the diskis provided with’
a backwardly or inwardly extending cam‘adapted 20 of is hinged on the other side (not shown) of’ the’
is that the disk bears on a bearing member pro
vided between the disk and the bolt in the tu- .
to cooperate with a cam track on a member con;
door case 2. The door case 2 is provided with a
nected to the bolt.
So that the invention may be readily under
stood and easily put intoieffect a preferred eni
bodiment thereof is illustratedby way of example
recess '3 registering with a bolt 4, adapted to
protrude into the recess when the door is closed.
_ ened inthe usual‘ way by means of a mounting 5
only, in the accompanying drawings inwhich: ‘
' adapted to be secured’in the door case 2 by means
Fig. 1 is a vertical section through door-case,
The bordering edges of the recess 3 are strength
_ of screws or the like (not shown)‘. ‘
a door and a lockingmeohanism. according to the
invention mounted therein, the bolt being shown
in looking position.
,
3.0
‘
‘
.
Fig. 3 shows a. horizontal section through the
parts shown in Figs. 1 and 2.
Fig. 4 is a side View of. the lock housing.
Figs. 5 and 6 show two different cross sections
taken along the lines V-V and VI--VI respec
tively in Fig. 1,
'
‘Fig. 7 shows a plan view of an abutment ele
ment for a spring adapted to bear on the bolt.
Fig. 8 shows a section of‘the bolt.
I
Fig. 9 is a piece of sheet metal intended to‘ b
doubled along the dotted lines in the middle and
thereby form a guide.
‘Figs. 10 and 11 are a side view and‘ a cross sec
'
' door is adapted to receive the lock housing, while
Fig. 2 is a similar sectional View. the lock,be~
ing in unlocking or receded position.
'
'The door I (Fig. 3) ‘is provided‘ with two‘ hori
zontal intersecting bores. or mortises 8,1, of
which the one 6 extending from the edge of‘the
I
the other bore ‘I is adapted to receive the spindle
8 of a handle 9. The door I is furthermore pro
vided with a bore or'm'ortise III for permitting the
introduction of a key II into the lock housing.
‘The jreference‘numeral l2 designates a plate
which surrounds the mouth of the mortises ‘I, Ill,
and which is fastened to the door I by one or
several screws I3; or by any other suitable means.
The lock housing consists of an externally and
40
I internally tubular cylinder I4 adapted to enclose
all parts of the locking mechanism. In order to
enable the insertion of the key I I and the spindle
8 of the handle 9 into the locking mechanism,
the cylinder M. is provided at both of its two op
posite sides with two separate slots. or with a
tion respectively of a lateral bar.
common longitudinal'slot I5, as will be apparent
Figs. 12-25 show seven other component parts
from Figs. 4, 6, 24 and 26.
v‘
of the locking mechanism, partly as seen from
The cylinder I A is provided at that end facing
above and partly asseen from the side, to wit, 50. the door case 2 with an annular outer ‘?ange
a bearing member, a locking element, a stemmed
I6 adapted to be let into the edge of ‘the door
member, a disk, an end-plate, a stud, and a tu
in a comparatively shallow recess which is‘ co
bular lock housing.
axial with the mortise 6 but of greater diameter
Fig. '26 shows a longitudina1 section of the outer
than the latter. In the form shown, the ?ange
cylinder shown in Figs. 24 and 25,
‘
55 I6 is not provided with any screw holes for
2,408,024
3
4
fastening the ?ange to the‘ edge of the door,
but serves as an ordinary stop ?ange. The
‘?ange may, of course. be provided with screw
holes, but as no material advantage is to be
.
of a pin 31 extending through the holes 38, 38
and 43 provided in the parts 20, 21 and 35 respec
tively. The outwardly facing edge of the end- '
plate 35 is provided with a recess 4| in which
enhance the manufacturing costs of the lock.
a triangular cam portion of, a disk 43 is adapted
to engage. The disk 43, one form of which is
shown in Figs, 18 and 19 and another in Fig.
from Figs. 1, 2, 16, 27, 28 and 29 is provided
normally to form an abutment for a resiliently
gained from securing it by screws or the like, the
provision of such holes would only unnecessarily
34,,is provided with a rectangular slot 64 adapted
Moreover, the ?ange l6 may be altogether omit
to
permit the passage of the likewise rectangular
ted because the locking mechanism, as will be
apparent from the following description, may be 10 spindle 8 of the handle 3. The form of the disk
- shown in Fig. 34 is most advantageous if the
held in the slot 5 by means of a handle 9 alone.
locking mechanism is to be adaptable for right
The cylinder 14 is provided at its other end
handedly as well as for left-,handedly hinged
with an inwardly directed ?ange l1 adapted to
doors, the locking mechanism then being adapt
provide an abutment for certain non-displaceable
parts of the locking mechanism in a. manner 15 able for either sort of door simply by turning the
outer cylinder I 4.
described herebelow.
,
,
. i
At that circumferential portion facing the
As will be apparent from Fig. 8 the bolt 4 has
mouth of the mortise, the disk bears on the in-.
a backwardly or inwardly directed bifurcated ex
wardly facing edge of a bearing member shown
tension, the two forks l8, l9 of which (FigS.- 3,
2'7, 28 and 29) grip the end ofa guide, consist 20 by way of example in Figs. 12 and 13. The bear
ing member 46 is rigidly connected to two slightly
ingoftwo'parallel elements or shanks 20, 25.
channeled lateral bars 41 (Figs. 10, 11, 31 and 32)
This guide is preferably made from a single
disposed at either side of the shanks 20, 2|. The
blank,_ which is doubled along dash and, dot
one end of the lateral bars 4'! is adapted always
lines intermediate its ends, as indicated in Fig.
to abut the inner ?ange ll of the tubular casing
9. Between the shanks 20, 2| there is an inter
M, the other end of the lateral bars being adapted
jaoent member 22 which, as will. be apparent
at its inward end with an eccentrically located,
?xed element when the locking mechanism is as- 1
inwardly extending stem 23 provided at its free
sembled; this element will be described later on
The parts l8-—22 are provided with holes 25,
member 46 andthe lateral bars 4‘! ‘are provided
with holes, or slots 45 and'49‘respectively. In
end with an oblique surface 24, the purpose of 30 in the description. In the form, shown in the
drawings by. way of illustration only, the bearing
which will be apparent later on in the description.
26 and 21 through which extends a stud 28 by
order to facilitate the assembly of the lock the
means of which the parts Iii-22 are held to
gether. Each of the elements ‘or shanks 20 and 35 bars 41 may be loosely threaded onto a stud 50,
2|, is provided with a longitudinal slot 23 and
35 ‘respectively, adapted to permit the passage
of interalia the key I! and'the spindle 8 of the
which, like the holes 45 and 49, may be of arbi
trary cross sectione. g. round or, as shown in Figs.
22 ‘and 23, rectangular. In both forms shown in_
the drawings the bars 4'! are moveover provided
door handle 9 therethrough. Towards that end
. proximatethe holes 26, the slots 29 and 30 are 40 with key holes 5|, 52 and a hole 53 for the spindle
8 of the door handle 9. In the’ form shown in
reduced to slits 3| and 32 respectively, the pur
Figs. 30 and, 31 the outer sides of the lateralbars \
ipose,of;which will be apparent vlater on in the
description.
'
»
i
'
41 are moreover shaped with horizontal recesses ‘
-At one end of the shanks 20 and 2| there is
54 extending inwardly fromthe outwardly facing
mounted in-cthat manner shown in Figs. 27-29.
by pressing. ‘The purpose ofthe recesses 54 and
' in spaced relationship to the- holes 29' and 30 a 45 edge of the bars, theinner side of the bars 41
being provided with one or more projections, studs,
ledge 33, forming a seat for the one end of'a
wards'55 or the like which may be produced e. g. V.
spring ‘34 when the locking mechanism is dis
, the projections 55 ‘willbe described together with
_
lated or ‘dismounted in the above mentioned 50 the key-bit later on in the description.
No) matter whether the mechanism. is disarticu
manner or whether it is completely assembled, -
When the lock isvassembled, the bearing mem
ber abuts a U-like locking ‘element 56, the shape
the other end of the spring 34 is in continuous
of which is shown in Figs. 14 and 15 and which
abutting engagement with an inwardly facing
in its turn abuts an abutment-element 51, which
ledge formed by the inner surface of the bolt and
a reduced’ portion of the bolt, which portion ex 55 element is under the in?uence of a spring 34 and
has the special form shown in Fig. 7 and abuts
tends inwards and is adapted'to guide the spring
the outer ends of the channel-like bars 41. The ‘
34 (see Figs. 1-3, 5, 6, 8 and 2'7). As the guid
locking element 56 is adapted to be actuated by a
ing of the spring 34 by the shanks 23, 2! and by
key I I so that it may be moved from that position
the inner wall of the tubular casing 14 will in
most cases be su?icient, the bolt may also take 60 in which it is shown in solid lines in Fig. 1 and in
which the bolt 4 cannot recede further than to a
the form shown in Figs. 28, 29, in which'it is
position in which the stem 23 of anintermediate
given a uniform diameter, and in which the
element 22 abuts the outer edge of the locking
spring abuts the inwardly facing end surface of
element, to that position shown with dotted lines
the bolt.- Thellast-mentioned form of the bolt
is cheaper to fabricate and‘more practical in use 65 in Fig. 1, and with solid lines in Fig. 2, in which
latter position the bolt 4 may be totally with
inasmuch as it'facilitates the insertion of the stud
drawn from the recess 3 in the door case 2. The
28, because the spring does then not obstruct
locking element 55 is ?xed in its two locking po
the hole 26 adapted to receive the stud 28.
sitions by means of its two extremities 58, 59 en
-At- the opposite end of the guide member 23,
gaging one of two pairs of notches 60, 6|‘ pro
2|, is a rigidly mounted end-plate 35, one form
vided in the outwardly facing edge of the bear
of whichis illustrated in Figs. 20 and 21, an
ing member 46. In order to facilitate the passage
other form thereof being shown in Fig. 34. vThe
of the locking element past the stem 23 of the
end-plate35, one end of which abuts the doubled
intermediate element 22 during the travel of the
portion 36 (Fig. 9) of the guide member 20, 2|,
locking element from the one ‘position to the
is fastened to the guide member 20, 21 by means
2,408,024
7
adapted to bear on the ?xed, slotted bearing
member and the proximate end surface of the
bolt, the abutment element being shiftable a
4. A locking mechanism comprising a tubular
limited amount along the guide elements against
lock'casing mounted in a door; a bolt slidably
the action of the spring, from a normally ?xed
mounted within the lock casing; a member con
position in which it is held by the slotted lateral
nected to the bolt and extending into the lock
bars; a spindle extending into the casing, and
casing, said member comprising a pair of parallel
operatively connected to the disk; and a handle
slotted guide elements; a plate mounted inter
mounted on the spindle.
jacent the inner 'ends of the slotted guide ele
'7. ‘A locking mechanism comprising a tubular
ments and provided with a cam track, means for 10
lock casing mounted in a door; a bolt slidably
rigidly securing said plate in position against
' mounted within the lock casing; a stem extend
movement, a ?xed bearing member intermediate
ing inwardly from the bolt; a member connected
the bolt and the plate; a, disk having an inwardly
to the bolt and extending into the lock casing;
directed cam portion and adapted to bear On said
bearing member and actuatingly to engage the 15 said member comprising a pair of parallel slotted
guide elements, a plate mounted interjacent the
cam track on the plate, the disk and the bearing
inner ends of the guide elements and provided
member being also interjacent the slotted guide
with a cam track, means for rigidly securing said
elements, an abutment element; a spring extend
plate in position against movement, a ?xed bear
ing between and bearing on the abutment ele
ment and the proximate end surface of the bolt, 20 ing member intermediate the bolt and the plate;
a disk having an inwardly directed cam portion
the abutment element being shiftable a limited
adapted to bear on said bearing member and
amount along the guide elements against the ac
‘members and operatively connected to the disk,
and a handle mountedon the spindle.
,
tion_ of the spring, from a normally ?xed position,
actuatingly to engage the cam surface on said
a spindle extending into the casing and opera
plate, the disk and the bearing member being
tively connected to the disk, and a handle 25 interjacent the slotted guide members, a slotted
mounted on the spindle.
5. A locking mechanism comprising a tubular
lock casing mounted in a door; a boltslidably
mounted within the casing; a member connected
abutment element, a spring bearing on the slotted
abutment and the proximate end surface of the
bolt, the slotted abutment being shiftable a lim
ited amount along the guide elements against the
to the bolt and extending into the lock casing,
action of the spring, from a normally ?xed posi
said member comprising a pair of parallel slotted
tion, a locking element disposed between the bear
ing member and the slotted abutment element
guide elements; a plate mounted interjacent the
inner ends of the slotted guide elements and pro
and adapted to be shifted by means of a key
transversely of the lock casing, from an inopera
ing said plate in position against movement, a 35 tive position to a position in which it obstructs
?xed bearing member intermediate the bolt and
recession of the stem through a registering slot
the plate; a disk having an inwardly directed
in the slotted abutment element, a spindle ex
cam portion‘ and adapted to bear on said bearing
tending into the tube casing and operatively con
member and actuatingly to engage the cam track
nected to the disk; and a handle mounted on the
on the plate, the disk and the bearing member 40 spindle.
'
being also interjacent the slotted guide elements,
8. A locking mechanism comprising a tubular
an abutment element, a pair of lateral bars abut
lock casing mounted in a door; a bolt slidably
ting the inwardly facing surface of the abutment
mounted within the lock; a stem extending in
element and the inner end of the tubular lock
wardly from the bolt; a member connected to
casing, a spring extending between and bearing
the bolt and extending into the lock casing, said
on the abutment element and the proximate end
member comprising a pair of slotted, parallel
surface of the bolt, the abutment element being
guide elements; an end-plate ?xed interiaccnt
shiftable a limited amount along the ‘guide ele
the inner end of the guide elements and provid
ments against the action of the spring from a
ed with a'cam track; a ?xed bearing member
normally ?xed position in which itv is held by
intermediate the bolt and the plate; a disk hav
the lateral bars, a spindle extending into the
ing an inwardly directed cam portion and adapt
casing and operatively connected to the disk, and
, ed to bear on said bearing member and actuat
vided with a cam track, means for rigidly secur
a handle mounted on the spindle.
ingly to engage the cam surface on said end
6. A locking mechanism comprising a tubular
lock casing mounted in a door; a bolt slidably
mounted within the casing; a member connected
to the bolt and extending into the lock casing,
said member comprising a pair of parallel slotted
plate, the disk and the bearing member being
disposed also interjacent the slotted guidemem
bers, a slotted abutment element, a springrbear
ing on the slotted abutment element and the rel
atively proximate end surface of the bolt, the
guide elements; a plate mounted interjacent‘the
slotted abutment element being shiitable a lim
inner ends of the slotted guide elements and pro
60 ited amount along the guide elements against
vided with a cam track,- means for rigidly secur
the action of the spring, from a normally ?xed
position; a substantially U-like locking element
located between the bearing member and the
slotted abutment element and adapted to be
shifted transversely of the lock casing by the ac
tuating engagement of the key-bit with the inner
ing said plate in position against movement, a
?xed, slotted bearing member intermediate the
bolt and the plate; a disk having an inwardly
directed cam portion and adapted to bear on the
bearing member and actuatingly to engage the
'cam track on the plate, the disk and the cam
member being also interjacent the slotted guide .
elements; an abutment element; a pair of slotted,
U-surface, from an inoperative position to a po
sition in which it obstructs recession of the stem
through a slot in the slotted abutment element,
lateral bars abutting the inwardly facing surface
of the abutment element and the inner end sur
7 face of the tubular lock casing; a stud extending
through a slot in the bearing member and in
the lateral bars and thereby detachably connect
ing these parts; a spring extending between and
75
a spindle extending into the casing and oper
atively connected to the disk; and a handle
mounted on .the spindle.
9. A locking mechanism comprising a tubular
lock casing mounted in a door; a bolt slidably
mounted within, the‘lock; a stem extending in
2,408,024
9
10
wardly from the bolt; a member connected to
from the bolt; a member connected to the bolt
the bolt and extending into the lock casing, said
and extending into the lock casing, said mem
member comprising a pair of slotted, parallel
ber comprising a pair of slotted parallel guide
guide elements; an end-plate ?xed interjacent
elements; a plate mounted interjacent the inner
the inner ends of the guide elements and provid CT ends of the slotted guide elements and provided
ed with a cam track; a- ?xed notched bearing
with a cam track, means for rigidly securing said
member intermediate the bolt and the plate; a
plate in position against movement, a ?xed slot
disk having an inwardly directed cam portion
ted bearing member intermediate the bolt and.
and adapted to bear on said bearing member and
the plate; a disk having an inwardly directed cam
actuatingly to engage the cam ‘surface on said
portion and adapted to bear on the bearing mem
end-plate, the disk and the bearing member be
ber and actuatingly to engage the cam track on
ing disposed also interjacent the slotted guide
the plate; the disk and the cam member being
members, a slotted abutment element, a spring
also interjacent the slotted guide elements; a
bearing on the slotted abutment element and the
spring bearing on the inner end surface of the
relatively proximate‘ end surface of the bolt, the
bolt and the outwardly facing surface of ?xed,
slotted abutment element being shiftable a lim
slotted bearing member; a slotted abutment ele
ited amount along the guide elements against
ment adapted to be guided by the slotted, paral
the action of the spring, from a normally ?xed
lel guide elements, a pair of warded and slotted
position; a substantially U-like locking element
lateral bars abutting the inwardly facing sur
disposed between the notched bearing member 20 face of the slotted abutment element and the
and the slotted abutment element and adapted
inner end wall of the tubular casing, the slotted
by means of its extremities to cooperate with the
abutment element thereby being held in a de?nite
notched bearing member and to be shifted trans
position from which it may be shifted a limit
versely of the lock casing by the actuating en
ed amount along the guide elements by a suit
gagement of a key-bit with the inner U-like sur 25 ably Warded key-bit against the action of the
face, from an inoperative position to a position
spring, from an inoperative position in Which it
in which it obstructs recession of the stem
is normally held by the Warded and slotted bars
through a registering slot in the slotted abut
to an operative position, in which it obstructs
ment; a spindle extending into the casing and
the recession of the stem, through a registering
operatively connected to the disk, and a handle 30 slot in the slotted abutment; a spindle extending
mounted on the spindle.
into the casing and operatively connected to the
10. A locking mechanism comprising a tubular
disk; and a handle mounted on the spindle.
casing mounted in a door; a bolt slidably mount
ed within the casing; a stem extending inwardly
SVEN LARSSON.
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