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Патент USA US2291655

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Aug. 4, 1942.
2 Sheets-Sheet .1
Filed March 12, 1941
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Aug- 4, 1942-
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12, 1941
'2' Sheets-Sheet 2
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Patented .Aug. 4, 1942
~ 2,291,655 .
Walter R. Schlage, Burlingam'e,
Calif” m:
to Schlage Lock Company, San Francisco.
Calif., a corporation of California
Application March 12, 1941, Serial No. 382,878
2 Claims. (01. 292-352)"
This invention relates to a door knob fastener,
and especially to a modified form of the fastener
disclosed in my former Patent No. 2,007,350, en
titled "Demountable knob and cylinder lock,”
issued July 9,1935.
In the above mentioned patent, a knob fastener ‘
is disclosed which is adapted to be locked or
dogged by a key mechanism mounted in the outer
knob to prevent removal of the knob except by
which is adapted to receive the outer end of a
pin Hi. This pin is mounted in the spindle, and
its inner end is shouldered to limit outward
movement. This shoulder is of the same diam
eter as the hole l0, so as to permit the pin it to
be pushed inwardly against the detent II in order >
to permit the pin it to be depressed suf?ciently
to clear the hole IS in the knob. ' - In the position
shown in Fig, 1, the pin 16, hereinafter‘ to be re'
ferred to as a latch or fastener, cannot be de
an authorized person who has possession of the 10 pressed, as the shoulder or head end of the pin
proper key. The present patent discloses a knob
l6 engages the exterior surface of the cylinder 8.
fastener which is applicable to both the inner
However, when the proper key is inserted, and
and the outer knob, and which is adapted to be
the cylinder 8 rotated a half revolution. the hole
dogged or locked by key-actuated means in the
l0 and the, detent I! will align with the head,_
outer knob, and by manually actuated means in
on the pin 16, and it may then be depressed
the inner knob; and further, to provide a knob
su?iciently to permit the knob to be released and
fastener which is actuated by a spring and a
removed. The knob under normal conditions is
detent, and in which the spring and detent also
secured against endwise removal-by the pin or
function to yieldingly retain the manual member
latch l6, and it cannot be released. except by a
'in one or vmore of a ‘number of predetermined 20
person in possession of the proper thev
cylinder 8 must be rotated until the detent aligns
The invention is shown by way of illustration 4 with the head of the latch i6.
in the accompanying drawings, in which:
The inner knob 6 is secured against removal by
Fig. 1 is 'a horizontal section ofv a door lock,
an identical form of latch or pin; such as shown
showing it mounted in a door;
at I6a, and it is held in latching position by a
Fig. 2 is a section similar to Fig. 1 showing the
rod l8. Thisrod?lls the inner space of the tubu
dogging members in'released position;
lar spindle, ‘but it is rotatable therein. Its outer
Fig. 3 is a cross section-taken on line III-+111.
end projects through the inner knob Sand is
of Fig. 1.;
provided with a thumbpiece or turnpiece l9 to
Fig. 4 is a cross section taken on line IV-IV 30 permit rotation of the rod. The rod has a cross
.of Fig. 1; and
hole |0a formed therein, and mounted therein is
Fig. 5 is a vertical section taken on line V-CV
a spring and detent 1211 (see Fig. 4). When the
of Fig. 1.
rod I8 is rotated a half revolution the detent will
Referring to the drawings in detail, and par
register with the head of the pin‘ Ito and in that
ticularly to Fig. 1, A indicates a suitable form
position the pin or latch may be.depressed to
of lock housing, in which is slidably mounted av
release the inner knob.
_ lat'ch bolt 2.
The rod l8 serves another function besides that
housing are spindle bearings 3 and 4, and ex-_
of a retainer for the spring and detent. By re- ’
tending through and supported in said bearings
40 ferring to Fig. 1, it will be noted that the sides‘
is a hollow spindle 5, on one end of which is se
cured a knob 6, which will hereinafter be re
‘ ferred to as theinner knob, and on the opposite
of the rod are cut away to form a ?at central
piece 20, and that the inner end of the rod is
provided with a lug 9a which cooperateswith the
end of which is secured a knob' ‘I which will
lug 9 formed on the inner end of the cylinder 8.
hereinafter be referred to as the outer knob.
45 The ?at member 20 is a dog actuator. That is,
Insertable through the outer knob and into
a dog consisting of. a flat platen is positioned
- the outer end of the spindle 5 is the cylinder 8
at the rear side of the spindle; ‘this plate is pro
of a suitable form of pin or plate tumbler lock,
vided with two dogs 23 one on each side thereof,
and formed on the inner. end of said cylinder is
and these dogs are normally urged by a spring‘.
a lug 9, the function of which will hereinafter
24 into a pair of openings 25 formed in the spindle
be described. Drilled adjacent the inner end of
(see Fig. 2). When the dogs are in the openings
the cylinder 8 is a hole l0 in which'is mounted
the spindle is dogged against‘ rotation, and when a spring H and a detent l2. Formed on opposite
the spindle is dogged against rotation, retraction
sides of the spindle, and in alignment with the
of the latch bolt 2 can not take place. Any at
hole l0, are holes I3 and I4; also formed in the
IS 55 tempt to rotate either the inner-or outer knob
knob,'in alignment with the 'hole II, is a hole
will therefore be of no avail when the dogs 23
assume the position shown in Fig. 1, as the knobs
are ‘secured to the spindle and the spindle can
not rotate as it is dogged. The dogs may, how
ever, be moved to the retracted position shown
in Fig. 2 either by rotating the rod IS a quarter
revolution,‘ by means of the turnpiece l3; or it
may be rotated by means of the insertion 01' a
key, as the insertion of a key will permit rota~
tion of the cylinder, and such rotation will cause 10
’ the lug 9 to engage the lug 9a and cause rotation
of the rod, and the dog actuator or plate 20 will
merely presented for‘ purposes of illustration.
Obviously the type of knob fastener or latch
member l8, together with the spring actuated
detent here shown, may be used in connection
with knobs and similar mechanism on other
types of locks; and while certain other features
or my invention have been more or less speci?
cally described for purposes of illustration, I '
wish it understood that changes may be re
sorted to within ,the scope of the appended
Having thus described my invention, what I
thus move the dogs either into or out 01' dogging
claim and desire to
position, and when moved to the position shown
in Fig. 2 the spindle may be rotated by either '15
knob to retract the latch bolt.
latch member extending
Retraction of the latchbolt is accomplished
through the spindle and into the knob toradially
by a roll-back member 30 formed on the spindle;
it against removal, a rotatable member within
this engages with a pair 01’ shoulders 3| (see Fig.
'5) formed at the rear end of a retractor plate 20 the spindle, said member having one portion pre
venting depression oi! the latch and having a re
32. This plate in turn is connected with the
cess formed therein at another portion to permit
latch bolt 2, and that is the manner in which
depression of the latch, a spring actuated de
the latch bolt is retracted. The latch bolt is
normally held in extended position by the springs ‘ tent mounted in the recess, and means for rotat
2a, and the dogs 23 are normally held in dogging 25 'ing the rotatable member to register the recess
' position by the spring 24,
and detent with the latch, said detent when in
register with the latch maintaining the latch
The spring actuated detents l2 and Ma serve
projected but permitting manual depression of
two functions, ?rst that of projecting the pins
the latch.
or latches l6 and Ilia into engagement with the
respective knobs, and ‘secondly they function 30 2. In a structure of the character described,
a hollow spindle, a knob mounted thereon, a de
as yieldable stop members to position either the
pressible latch member extending readially
cylinder 8 of the key mechanism or the rod l8
through the spindle and into the knob to secure
which operates the dog acutator 20. When the
it vagainst removal, a rotatable member within
turnpiece IS on the rod assumes a horizontal po
sition, the actuator 20 assumes a vertical posi 35 the spindle, said member having one portion pre
venting depression of the latch and having a re
tion and the dogs 23 a dogging position. When
cess formed therein at another portion to per
the rod I8 is turned by the turnpiece i9 until this
mit depression of the latch, a spring actuated
assumes a vertical position, the actuator 20 will
detent mounted in the recess, means for rotating
assume a horizontal position, as shown in Fig.
2, and the dogs 23 will assume their retracted 40 the rotatable member to register the recess and
detent with the latch, said detent when in reg
position where rotation of the'spindle will be
ister with the latch maintaining the latch pro
permitted. The hoIesJshOWn at 35 and 36 in Fig.
jected but permitting manual depression of the
4 are provided for the purpose of receiving the
latch, and a recess formed in the inner surface
detent In, and thus yieldingly secure the turn
of the hollow spindle with which the detent is
' piece and the rod H3 in one position or another.
The hole I3, in cooperation with the detent, 45 adapted to register in another position of the ro
yieldingly secures
tatable member, said detent yieldingly resisting
the cylinder 3 in looking po
rotation of the rotatable member.
The lock shown in the present instance is
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