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Патент USA US2403597

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2,403,597
Patented July 9, 1946
UNITED STATES PATENT vOFFICE
2,403,597
DOOR LOCK
Carl A. Hillgren, Los Angeles, Calif.
Application May 8, 1944, Serial No. 534,614
8 Claims. (Cl. 292-169)
1
My invention relates to a door lock, and par
ticularly to one having a dead-locking mecha
nism.
One of the principal objects of this invention
is to provide a door lock with the dead-locking
mechanism which is particularly simple and economical to manufacture, one having a minimum
of simple operating parts, one which is positive
in its action, and one which will not readily de
` teriorate or get out of order.
2
My door lock is installed, in the cconventional
manner, at the free edge portion of the door`
designated D. The lock consists essentially of a
latch bolt unit B and an operating unit K.
The latch bolt unit B is enclosed in a housing
consisting of the main housing member I and
the housing cover member 2 which are held to
gether by a unitary screw 3. These housing
members I and 2, when secured together, are
cylindrical in shape, and ñt into a cylindrical
bore D1 in the edge of the door. This housing
Another important object of this invention is
may be secured in place by means of screws ex
to provide a simple and economically constructed
tending through holes in the plate Ia at the outer
clogging or dead-locking mechanism, and one
end of the housing I. If desired, the housing
which is simple and novel of operation.
may be held in place only by means of the door
An important object also of this invention is 15 spindle
4 extending transversely through the
to provide a clogging or dead-locking mechanism
rear
portions
of both housing members I and 2.
whereby the outer portion of the main latch bolt
The cross-section of the spindle 4 is preferably
may be directly locked against the bolt housing
segmental, as shown in Fig. 2, for the purpose to
to prevent retraction or inward shifting of the
be hereinafter described. The diameter of the
20
latch bolt, until such clogging or dead-locking
spindle is substantially that of transverse holes
mechanism is released.
Ib and 2a at the inner ends of the housing mem
A further important object of this invention is
bers. Thus, the housing is held or secured in
to provide a novel and simple spring mechanism
position Within the door. At the opposite ends
for urging the auxiliary or dead-locking bolt out
wardly from the housing or beyond the door, and 25 of the spindle 4 are secured an outer knob 5 and
an inner knob 6. The outer knob 5 being pref
also for urging the dogging or dead-locking
erably provided with a key lock mechanism 1,
' mechanism into engagement with the main latch
shown diagrammatically in Fig. l. The knobs
bolt to prevent inward shifting of the same.
may be secured in position, if desired, -by or
With these and other objects in view, as will
appear hereinafter, I have devised a door lock 30 against escutcheon plates 8.
Within
the
housing
is
reciprocally
mounted a
of this class having certain novel features of
main latch bolt I I and an auxiliary latch bolt I2,
construction, combination, and arrangement of
the former being shown as positioned near the
parts and portions, as will be hereinafter de
outer side of the door whilev the latter is posi
scribed in detail, and particularly set forth in
tioned
nearer the inner side. The auxiliary latch
the appended claims, reference being had to the
bolt I2 is preferably semi-circular in cross-sec
accompanying drawing, and to the characters of
tion and ñts with its flat side against an inner
reference thereon, which form a part of this ap
plication, in which:
ñat side of the main latch bolt II which is more
than semi-circular in cross-section. Within and
Fig. 1 is a transverse sectional view of the
free edge of a door, showing my lock mounted 40 at the rear portion of the housing, and imme
diately behind the main latch bolt I I vis recipro
therein, and the means for operating the same,
cally
mounted the bolt operating member I3.
a portion of the lock housing being shown in
The operative connection with the latch bolt will
section to facilitate the illustration;
be hereinafter described. The inner end of this
Fig. 2 is a sectional view thereof, taken through
operating member I3 is normally positioned in
2--2 of Fig. 1, and showing a portion of the front
engagement
with the forward flat side 4a of the
casing member broken away to facilitate the il
segmental spindle 4.
lustration;
The main latch bolt has a cut-out portion IIa
Fig. 3 is a similar, but fragmentary sectional
at its inner end, providing at one side a portion
view thereof, with the section taken through 3-3
or tongue II‘D which extends backwardly into a
of Fig. 1;
1
_
cut-out portion I3a at one side of the operating
Fig. 4 is an outer end elevation thereof;
member I3. Thus, the main latch bolt and the
Figs. 5 and 6 are sectional views thereofl taken
operating member overlap each other.
through 5-5 and 6-6 of Fig. 1;
Within the cut-out portion IIa is located a
Fig. '7 is a fragmentary sectional view thereof,
compression spring I4 which normally operates
taken through 'I--1 of Fig. 1; and,
Fig. 8 is a similar but fragmentary sectional
View of the lock similar to Fig. 1, but showing
the auxiliary latch bolt in a retracted position
and held in such position by the keeper for the
60
main latch bolt.
the main latch bolt and the operating member
urging the former outwardly to its normal latch
ing position, and the latter inwardly against the
ñat side of the spindle.
Within the portion I3b of the operating mem
ber Il, which` is located along side the cut-out
portion Il“ and which extends into the cut-out.
portion II“, is a longitudinal slot I8° through
which extends the screw l.
y
~
4
c
II is forced inwardly by the keeper Il, carrying
the auxiliary latch bolt I2 to the inward posi
tion of the former. When the end of the main
latch _bolt is‘located opposite the bolt receiving '
A rocker Il is pivoted to the shank of the screw 5 opening Il* in the keeper,
the bolt is forced to
3 and may be supported by its opposite ends which
rest on flat faces ofthe walls forming the op-
posite sides of the slot llc. This rocker is shown
as havingdiametrically opposed arms Il‘ and II",
the former extending into a transverse notch Il*1
in the outer wall forming one side of the longi
tudinal slot. The other and longer arm Ilb ex
its extended position by the main spring I4, but
vthe auxiliarylatch bolt is held in its inward
position, as shown in Fig. 8. When in-the latter
position, the outer or _free ends of the furcations
IO” of the clogging member I8 are permitted to be
shifted to the solid line position shown in Fig. 8,
by the spring I'I. _This prevents the inward shift
tends into a transverse notch Il“I in the tongue
ing of the main latch bolt II from the outer end,
or projection Il” of the main latch bolt. AsL the
such as by means which may be employed by an
operating member I0 is forced outwardly by the 15 unauthorized person attempting to enter the
rotation ot the spindle 4, the shoulder, forming
room behind the closed door. If, however, the
the inner side of the notch i3d, engages the short
spindle 4 is rotated by either of the knobs, or the
arms of the rocker I5 and forces the end of the
lock 'Iy in the outer knob 5, the operating member
longer arm I5”, which isbent backwardly slightly
is forced outwardly. The initial outward
against a corresponding shoulder forming the 20 `I3
movement of thev operating member causes a
inner side of a notch II°, thereby withdrawing or
ridge I3”, at the- outer end of such operating
retracting the bolt.
The auxiliary latch bolt I2 has,_at its inner;
end, a portion I2'L which extends towards the
member, to engage an inclined face I6“ at the
adjacent side and near the inner end of the
dogging member, causing the dogging member to
main latch bolt I I, and this portion I2“ has later 25 be rocked about its pivot or about the end of
ally extending or opposed lugs I2” which when y the laterally extended portion I 8“, against the
the auxiliary latch bolt is in its outermost posi->
tion, as shown'in Fig. 1, engage a shoulder IId at
the adjacent side of the latch bolt II, which
action ofthe spring I1, freeing the ends of the
furcations from the shoulder II". Further rotat
ing en'ort on the part of either of the knobs will
' shoulder is positioned at the inner end of the 30 cause the main latch bolt I I to be drawn freely
locking bolt portion» and which is. at all times,
inwardly by reason of the rotation of the rocker
located within the housing. At the same side of
I5, mentioned above.v
l
the main latch bolt is located a dogging member
Though I have shown and described a particu
I6 which provides the dead-locking element for
lar construction, combination, and arrangement
my lock. The rear portion ofsthe dogging mem 35 of lparts and portions, I do not wish to bè limited
ber has a laterally and slightly angularly ex
to the same. but desire to include in the scope of
tended portion I63L which is fitted against a
my invention the construction, combination, and
shoulder 2b of the housing member 2, and this
arrangement substantially as set forth inthe ap
end of the dogging member is held in this posi
pended claims.
, '
tion by a. lug or prong 2" in the _housing member 40
I claim:
2. The opposite end portion of the dogging mem
1. In a door lock, a latch housing, a main latch
ber is bîfurcated, as shown best in Fig. 2, and the
member movably mounted therein, a retractor, an
furcations, designated I6", are located at the op
auxiliary latch member associated with the main
posite sides of the auxiliary bolt I2. When the
latch member and adapted to be retracted there
auxiliary bolt I2 is in its retracted position, as 45 with and also to ,be- shifted inwardly independ
shown in Fig. 8; thepends of- the furcations engage
ently thereof, a dogging member pivoted within
the shoulder II'i of the main latch bolt.
the inner end of the housing adapted to be
The lugs I2b are located between the furcations
shifted by the movement of the auxiliary latch
and the mainlatch-bolt, as shown in Figs. 1 and
member, with its free end into dogging engage
8. When the auxiliary latch bolt is in its outer 50 ment with` the inner end of the main latch
mostposition, as shown in Fig. 1, the lugs I2b
member, an operating member slidably mounted
hold the ends of `the furcations clear of the
at the inner end of the housing and shiftable by
shoulder IId, but when` the lugs I2b are with
the retractor, and a _rocker pivotally mounted in
drawn inwardly, as shown in Fig. 8, the ends of
termediate its ends within and on the housing
the furcations are allowed to engage the‘shoul 55 and engageable at tisfopposite ends by the main
der lid, and thereby prevent retraction or in
latch member and the operating member, said
ward shifting 0f the main latch bolt.
operating member‘engaging the dogging merri->
Between the inner end of the auxiliary latch
ber whereby the free end of the latter is shifted
bolt I2, and the outer side of the lateral exten
from the path of movement of the main latch
sion IIìa of the dogging member, is positioned a
member to allow retraction of the latter.
compression` spring I1, this spring being located
by a lug or prong I2c at the inner end of the
auxiliary latch bolt and the lug or prong 2c on ,
the cover member 2, referred to above. The com
2. In a door lock, a latch housing, a main latch
member movably mounted therein, a retractor,
an auxiliary latch member associated with the
main latch member and adapted to be retracted
pression spring I‘l performs two functions, 65 therewith and also to be shifted inwardly inde
namely, that of urging the auxiliary latch bolt
pendently thereof, a dogging member pivoted
I 2 outwardly and of causing the dogging member
within the inner end of the housing adapted to be
I6 to be rocked about its inner end, urging the
shifted, by the movement of the auxiliary latch
free ends of the furcations toward the latch bolt
member, with its free end into dogging engage
II and behind the'shoulder Ild thereof. For the 70 ment with the inner end of the main latch mem
purpose of causing rocking about such lateral ex
ber, an operating member slidably mountedl at
tension I6“, the latter portion is positioned at an
the inner end of the housing and shii’table by the
angle, as described above and as shown best in
retractor, and a rocker pivotally mounted inter
Figs. l and 8.
`
mediate its ends within and on the housing and
When the door is closed. the main latch bolt 75 engageable at its opposite ends by the main latch
2,403,597
5
member and the operating member, the outer
end of the operating member engaging the dog
ging member near its pivoted end whereby the
free end of the latter is shifted from the path of
movement of the main latch member to allow re
traction of the latter.
3. In a door lock, a latch housing, a main latch
member movably mounted therein, a retractor
6
member, said operating member engaging the
dogging member whereby the free end of the
latter is shifted from the path of movement of
the main latch member to allow retraction of the
latter.
6. In a door lock, a bolt housing, a main and '
an auxiliary latch bolt mounted in and extend
ing beyond one end thereof, a retractor for re
tractingl the bolts, the auxiliary latch bolt being
for retracting the latch member into the hous
ing, an auxiliary latch member associated with 10 also shiftable inwardly independently of the main
latch bolt, a dogging member located longitudi
the main latch member and adapted .to be re
nally of the housing and pivoted at its inner end
tracted therewith by the retractor and also to be
therein, the outer end of the dogging member
shifted inwardly independently thereof, a d0e
being Ibifurcated, the inner portion of the main
ging member pivoted within the inner end of the
housing adapted to be shifted by the movement 15 latch bolt having a. shoulder engageable either
by the inner end of the auxiliary latch bolt or
of the auxiliary latch member, with its free _end
by the free ends of the furcations of the dogging
into dogging engagement with the inner end of
member, a spring normally urging the ejection
of the main latch bolt, and a second spring lying
member and the dogging member for normally 20 between the furcations- of thev dogging member
the main latch member, a single spring positioned -
between the inner ends of the auxiliary latch
urging ejection of the auxiliary latch member and
also engagement of the free end of the dogging
for normally urgingl the ejection of the auxiliary
latch bolt, said auxiliary latch bolt, when shifted'
outwardly, being capable of disengaging the free
member with the inner end of the main latch
ends of the furcations of the dogging member
member, and means associated with the retractor
for engaging the dogging member whereby the 25 from the shoulder of the main latch bolt to allow
retraction of the latter by the retractor.
free end of the latter is shifted from the path of
7. In a d_oor lock, .a bolt housing, a main and
movement of the main latch member to allow
an auxiliary latch bolt mounted in and extending '
retraction of the latter.
'
l
beyond one end thereof, a retractor for retracting
4. In a door lock, a latch housing, a main latch
the bolts, the auxiliary latch bolt being also shift
` member movably mounted therein, a retractor
-able
inwardly independently of the main latch
for retracting the latch member into the housing,
bolt, a dogging member located longitudinally of i
an auxiliary latch member associated with the
the housing and pivoted at its inner end therein,
main latch member and adapted to be retracted
the outer end of the dogging member being bifur
therewith by the retractor and also to be shifted
>inwardly independently thereof, a dogging mem 35 cated, the _inner portion of the main latch bolt
having a shoulder engageable either by the inner
ber pivoted within the inner end of the housing
end of the auxiliary latch bolt or by the free ends
adapted to be shifted by the movement of the
oi'
the furcations of the dogging member, a spring
auxiliary latch member, with its free end into
normally urging the ejection of the main latch
dogging engagement with the inner end of the
main latch member, a single spring positioned be 40 bolt, and a second spring lying between the furca
tions of the dogging member and between the
tween the inner ends of the auxiliary latch mem
pivoted portion of the latter and the auxiliary
ber and the dogging member for normally urging
latch
member, for normally urging ejection` of
ejection of the auxiliary latch member and also>
the latter and also for urging engagement of the
engagement of the freeend of the dogging mem
ber with the inner end of the main latch member, 45 free ends of the furcations of the dogging mem
ber with the shoulder of the main latch bolt.
and means associated with the retractor for en
8. In a door lock, a bolt housing, a main and
gaging the dogging member near its pivoted end
an auxiliary latch bolt mounted in and extending
whereby the free end of the latter is shifted from
beyond one end thereof, a retractor for retractingthe path of movement of the main latch member
the
bolts, the auxiliary latch bolt being also shift
to allow retraction of the latter.
able inwardly independently of the main latch
5. In a door lock, a latch housing, a main latch
bolt, a dogging member located longitudinally of
member movably mounted therein, a retractor,
the housing and pivoted at its inner end therein,
an auxiliary latch member associated with the>
the outer end of the dogging member being bi
main latch member and adapted to be retracted
therewith and also to be shifted inwardly inde 55 furcated, the inner portion of the main latch
bolt having a shoulder engageable either by the
pendently thereof, a dogging member pivoted
inner end of the auxiliary latch bolt or by the
within the inner end of the housing adapted to
free ends of the dogging member, a spring nor
be shifted by the movement of the auxiliary latch
mally urging the ejection of the main latch bolt,
member, with its free end into dogging engage
ment with the inner end of the main latch mem 60 and a second spring lying between the furcations
of the dogging member and normally urging the
ber, an operating member slidably mounted at
ejection of the auxiliary latch bolt, said auxiliary
the inner end of the housing and shiftable by
latch bolt also lying between the furcations of
the retractor, a rocker pivotally mounted inter
the dogging member, the portion of the inner end
mediate its ends within and on the housing and
engageable at its opposite ends by the main latch 65 of the auxiliary latch bolt engageable with said
shoulder consisting of laterally» extended dogs
member and the operating member, a spring nor
positioned -between the furcations and the inner
mally separating the main latch member and the
portion `of thel main latch bolt,- said dogs, when
operating member, and a second spring positioned
said auxiliary latch bolt is ejected, being capable
between the inner ends of the auxiliary latch
of disengaging‘the free ends of the furcations
member and the dogging member for normally
from the shoulder of the main latch bolt to allow
urging ejection of the auxiliary latch member
retraction thereof by the retractor.
and also engagement of the free end of the dog
» .
.
CARL A. HIILGREN.
ging member with the inner end of the main latch
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