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Патент USA US2059694

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Nov. 3, 1936. ‘
I
'
E,
JACOB]
2,059,694
LOCK
Filed Nov. 50, 1928
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2,059,694
Patented Nov. 3, 1936
UNITED STATES PATENT QFFI'CE
2,059,694
LOCK
Edward N. Jacobi, Milwaukee, Wis., assignor to
Briggs and Stratton Corporation, Milwaukee,
Wis., a corporation of Delaware
Application November 30, 1928, Serial No. 322,890
10 Claims. (01. 70-46)
This invention has as an object the provision
of new and simpli?ed means for maintaining a
lock cylinder .assembled in its mounting member
or head.
Another object of this invention resides in the
provision of a lock of the character described
having means for maintaining the lock cylinder
assembled with the mounting member or head
which means may be actuated to permit the
10 ready authorized removal of the lock cylinder
from the mounting member.
Another object of this invention resides in the
provision of a lock of the character‘ described in
which simpli?ed means are provided for main
15 taining the lock cylinder assembled with the
mounting member and which may be actuated
to permit the removal of the lock cylinder when
rality of tumblers 8 which, when in looking posi
tion, are received in a longitudinal locking groove
or channel 9 formed in the mounting head in 10
communication with the bore 6. The tumblers
8 are spring urged to engage their locking ends
in the groove or channel 9 in the periphery of
the lock cylinder by the insertion of a proper
key Ill, thus permitting free rotation of the lock 15
cylinder.
turned by a proper key to a predetermined inter
mediate position.
ber 13 stamped from relatively hard metal to
urged plunger or detent ?nger carried by the
lock cylinder and engageable in an annular
groove in the mounting member and which may
be moved to an inactive position when the cyl
inder is turned to a predetermined position with
respect to the mounting member.
With the above and other objects in view
which will appear as the description proceeds, my
30 invention resides in the novel construction, com
bination and arrangement of parts substantially
as hereinafter described and more particularly
de?ned by the appended claims, it being under’
stood that such changes in the precise embodi
35 ment of the herein disclosed invention may be
made as come within the scope of the claims.
In the accompanying drawing, I have illus
trated several complete examples of the physical
embodiment of my invention constructed accord
ing to the best modes I have so far devised for
the practical application of the principles there
of, and in which:
Figure 1 is an end view of a lock embodying
my invention with parts broken away and in sec
45
5 represents the mounting member or head of a
conventional lock having a longitudinal bore 6 Vi
extending therethrough to rotatably receive .a
lock cylinder 1. The lock cylinder has a plu
The forward end of the mounting head 5 is
provided with a counterbore H to receive the
And a more speci?c object of this invention
resides in the provision of a lock having a spring
2
Referring now more particularly to the ac
companying drawing in which like numerals
designate like parts throughout the several views,
tion to illustrate structural details;
Figure 2 is a transverse, sectional view taken
through Figure 1 on the plane of the line 2-2;
Figure 3 is a view similar to Figure 1 illustrat
ing a slightly modified form of my invention;
Figure 4 is a view, partly in section and partly
50
in elevation, taken through Figure 3 on the plane
of the line 4—4, and
'
Figure 5 is a cross sectional view taken through
the forward end of the lock illustrating another
55 modi?ed form of my invention.
horizontal or annular ?ange l2 of a cap mem
protect the lock cylinder against destruction and
is engaged over its forward end being secured
thereon in a novel manner now about to be de
scribed.
The lock cylinder 1 is insertable in its mount
ing head 5 from the forward end and is re
25
strained against displacement therein by a pair
of plungers or detent ?ngers l4 slidably mounted
in parallel bores or pockets l5 formed in the
lock cylinder at opposite sides of its key slot l6. 30
The bores or pockets I5 extend inwardly from
the periphery of the lock cylinder in opposite
directions and are spaced from the forward end
of the cylinder a distance substantially half of
the depth of the annular flange l2 of the cap
member 13.
The plungers Ill have their outer ends reduced,
as at H, to- pass through apertures [8 formed
in the ?ange l2 of the cap member in alignment
with the bores l5 and thus maintain the cap 40
member secured on the end of the locking cylin
der. The shoulder formed on the plungers by the
reduced ends is engageable with the inner surface
of the cap member flange to limit outward move—
ment thereof by action of their urging springs I!)
which are con?ned between the ends of the bores
or pockets l5 and the ends of the plungers.
In assembling the lock cylinder and its cap
member with the mounting head, the plungers I4
are held in their retracted positions to permit the
same to enter the counterbore I! in the forward
end of the mounting head and after the lock
cylinder has been moved to its proper longitudinal
position in the mounting head, the reduced ends
I‘! of the plungers are aligned with an annular ‘'
2
2,059,694
channel 26 extending from the counterbore ll,
into which they are extended by their urging
springs l9 thus maintaining the lock cylinder and
its cap against removal from the mounting head.
Figure 1 illustrates the lock cylinder turned to
an intermediate position aligning the plungers M
with a pair of apertures 2| in the mounting head
and communicating with the annular channel 20
whereby the plungers may be retracted against
10 their urging means by the insertion of proper
tools through the apertures 21 to permit the re
moval of the lock cylinder from the mounting
head.
In Figures 3 and 4, a slightly modi?ed form of
15 my invention is illustrated in which the plunger
14 not only serves as a means for maintaining the
lock cylinder in its mounting member, but also
provides a stop for limiting the movement of
the lock cylinder in the mounting member. In
20 this form of my invention, the lock cylinder 1
has but one plunger and its bore l 5 is disposed at
an angle to the key slot IS. The end of the plung
er’s reduced end I? is preferably cut on an angle,
as at 22, to ride within an annular groove 23
25 which does not however, extend around the en
tire periphery of the mounting head but termi
nates at points 24 and 25 to de?ne de?nite limits
of movement for the lock cylinder. An aperture
26 communicates with the channel or groove 23
30 to permit means to be inserted into the channel
to retract the plunger l4 within the periphery of
the lock cylinder and thus permit the removal
thereof from the mounting head.
Figure 5 illustrates another modi?cation of
35 my invention and in this instance the plungers
M are replaced by a detent ?nger 21 which is
stamped from a ?at piece of metal and is re
oeived in a recess 28 formed in the lock cylinder
1 at one side of its key slot “5 and in communica
40 tion with an annular groove or channel 29 formed
in the lock cylinder. The annular channel 29
extends around the entire periphery of the lock
cylinder and is positioned preferably adjacent the
forward end of the mounting head 5 to receive
45 a spring 30 which has one end directed radially
and inwardly, as at 3i, to engage a corner 32
formed in the detent 21 by a notch 33 therein
which extends inwardly from its outer edge. The
spring 30 being in tension thus maintains the
50 detent 21 in its position illustrated in Figure 5
with its outer end 34 extended beyond the periph
ery of the lock cylinder and into an annular chan—'
nel or groove 35 formed in the mounting head
in alignment with the groove 29.
55
In this manner, the detent 21 maintains the
lock cylinder assembled with the mounting head
and when it is desired to remove the lock cylin
der, the cylinder is moved by its key to its inter
mediate position illustrated and a wire or suit
60 able tool, not shown, inserted through an aper
ture 36 in communication with the channel 35
to depress the end 34 of the detent 2'! within the
periphery of the lock cylinder. Movement of the
detent to this position causes the end 3| of the
65 spring 30 to engage the notch or recess 33 and
hold the detent in a position with its end 34 dis
posed within the periphery of the lock cylinder to
permit ready removal thereof from the mount
ing member.
70
From the foregoing description taken in con
nection with the accompanying drawing, it will be
readily apparent to those skilled in the art to
which an invention of this character appertains,
that I provide simple and efficient and inexpen
75 sive means for maintaining the lock cylinder of
a lock assembled with its mounting head and in
which the removal of the lock cylinder from the
mounting head for repair or the like may be
readily accomplished without in any way de
stroying or mutilating the structure.
What I claim as my invention is:
1. In a lock device having a mounting member
provided with a recess having an aperture lead
ing therefrom to its exterior, a lock cylinder mov
able in the mounting member between de?nite 10
limits, a spring pressed detent carried by the
lock cylinder and having a portion yieldably re
tained in the mounting member recess to coop
erate with the recess and limit the movement of
the cylinder in the mounting member between 15
said de?nite limits, and said detent registering
with said aperture when the cylinder is in a pre
determined position whereby a tool may be in
serted to free the detent from the recess and per
mit the ready removal of the cylinder from the
mounting member.
2. In a lock device having a mounting member
provided with a bore and an abutment, a lock
cylinder movable in the bore, a cap engageable
over the outer end of the cylinder, a spring
pressed detent carried by the cylinder and pro
jectable through the cap to engagement with the
mounting member abutment to retain the cyl
inder within the mounting member and the cap
on the cylinder.
30
3. In a lock device having a mounting member
provided with a bore and an abutment, a lock
cylinder movable in the bore, a cap engageable
over one end of the cylinder, a spring pressed de
tent carried by the cylinder‘ and projectable 35
through the cap to engagement with the mount
ing member abutment to retain the cylinder with
in the mounting member and the cap on the cyl
inder, and means whereby said detent may be
freed of the mounting member abutment to per 40
mit removal of the cylinder from the mounting
member when the cylinder is in a predetermined
position.
4. In a lock device having a mounting member
provided with a bore having an abutment and a 45
lock cylinder movable within the bore in the
performance of its locking function, the cylinder
having a slot in one side, a flat detent movable in
the slot, spring means normally urging the detent
into the path of the abutment to prevent the de 50
tachment of the cylinder from the mounting
member, means permitting the movement of the
detent against the action of said spring to a po
sition free of the abutment when the cylinder is
in a predetermined position, and means whereby 55
the spring maintains the detent in said free po
sition.
5. In a lock device having a mounting member
and a lock cylinder member movable therein be
tween predetermined limits in the performance of 60
its normal locking function, yieldable means car
ried by one of said members and engageable in a
channel in the other member for limiting the
movement of the lock cylinder member in the
performance of its normal locking functions to 65
said predetermined limits and maintaining it
assembled with the mounting member, and means
whereby said yieldable means may be moved to
an inactive position to permit disassembly of the
members.
70
6. In a lock device having a mounting mem
ber and a lock cylinder member movable therein
between predetermined limits in the performance
of its normal locking function, a spring pressed
member carried by said lock cylinder member and 75
3
2,059,694
engageable in a channel in the mounting member
for limiting the movement of the lock cylinder
member in the performance of its normal locking
function to said predetermined limits, said spring
pressed member being cooperable with said chan
nel member whereby to prevent outward move
ment of said cylinder member from said mount
ing member, and means whereby in one position
of said cylinder member relatively to said mount
10 ing member, said spring pressed means may be
moved to an inactive position to permit dis
assembly of the members.
7. In a lock structure, a mounting unit, a look
ing unit movable therein in the performance of its
15 normal locking functions, and cooperating abut
ments carried by the units for limiting movement
of the locking unit in the mounting unit and re
movably securing the locking unit in the mount
ing unit, one of said cooperating abutments being
20 movable to inactive position by a tool inserted in
one of the units when the units are in predeter
mined relative positions to disengage the abut
ments and release the locking unit for removal.
8. In a lock structure, a mounting unit, a look
25 ing unit movable therein in the performance of
its normal locking functions, a locking bolt car
ried by the locking unit and normally engaged in
a recess in the mounting unit to de?ne the normal
limits of movement of the locking unit, disen
gagement of the locking bolt out of the mounting
unit recess releasing the locking unit for with
drawal from the mounting unit, and means
whereby the locking bolt may be disengaged from
the mounting unit recess.
9. In a lock structure including a mounting
unit and a locking unit movable therein between
predetermined limits, releasable means for main
taining the units assembled, said means serving to 10
de?ne the limits of movement of the locking unit
and being releasable when the units are in pre
determined relative positions, and means whereby
said member may be released to e?'ect dis
assembly of the units from the exterior of the
mounting unit.
10. In a lock structure, a casing, a barrel mov
able in thecasing, a locking bolt carried by the
barrel and engageable with a recess in the casing
to de?ne the limits of movement of the barrel in
the casing, said locking bolt being yieldably main
tained in operative position, and means whereby
the locking bolt may be moved to inoperative po
sition to release the barrel for withdrawal from
the casing when the same is in a predetermined 25
relative position with respect to the casing.
EDWARD N. JACOBI.
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