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Патент USA US3064472

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Nov. 20, 1962
c. 6. MG ETAL
3,064,462
DOOR LOCK CONSTRUCTION
Filed May 9. 1960
3 Sheets-Sheet 1
TO OPEN
DOOR
INVENTORS
Clifford a. Ng
By Carl E. _Bck
fforneys
'
Nov. 20, 1962
C. G. NG ETAL
DOOR LOCK CONSTRUCTION
Filed May 9. 1960
23
I
76
II
66
23
INVENTORS
Clifford 6. N9
By
Carl EBec
,,! ,IV
A forneys
Nov. 20, 1962
c. a. N6 ETAL
3,064,462
DOOR LOCK CONSTRUCTION
Filed May 9. 1960
3 Sheets-Sheet 3
F I g
82 8
69
77.4281 84
34
39
33
36
7
66
I4
76
6!
62
'INVENTORS
Clifford G. Ng
BY Carl
‘Beck
m uimorneys
hoe
Mt
assent
Patented Nov. 20, 1962
2
jected position to positively preclude unauthorized door
3,964,462
opening; and the provision of lock construction which
includes key actuatable means for unlocking a door
DOOR LUCK CGNSTRUCTHBN
Clilford G. Ng, 5751/2 Vallejo St., and Carl E‘. Beck,
handle actuatable locking means.
These and other objects of the invention will become
apparent from a study of the following speci?cation in
which reference is directed to the accompanying draw
317 10th St, both of San Francisco, Caiif.
Filed May 9, 1960, Ser. No. 27,724
14 Claims. (til. 7tl-153)
This invention relates generally to a lock construction
for a swingably mounted door. More particularly the
lugs.
FIG. 1 is an end elevational view of the subject lock
invention relates to a door lock construction for main 10 construction positioned in a swingable door.
taining a swingable door closed, such construction includ
FIG. 2 is a side elevation of the outside door handle
ing handle means for easily and rapidly effecting locking
of the lock construction.
FIG. 3 is a side elevation of the inside door handle.
FIG. 4 is a vertical section through the door and lock
freedom from use of conventional rotatable door knobs 15 construction taken in the plane of line 4—4 of FIG. 2.
commonly employed in the art heretofore. The subject
FIG. 5 is a bottom plan view of the lock construction
construction instead employs handle means which are
casing taken in the plane of line 5—5 of FIG. 4 and
effective for opening a closed door merely by pushing or
showing the handle arrangement extending therefrom.
pulling thereon, depending upon which side of the door
MG. 6 is a vertical section through the lock casing
the operator is standing and in which direction the door
illustrating details of the internal mechanism thereof.
of the door in the closed position or rapid opening of the
door. The subject construction is characterized by its
is swingable.
FIG. 7 is a horizontal section through the lock casing
taken in the plane of line 7-—7 of FIG. 6.
FIG. 8 is a vertical section through the lock casing
The lock construction of this invention also includes
mean actuatable by the door handles for e?ecting positive
locking of the door from either the inside or outside there
of Without requiring use of a key. With the subject con
struction, a key is only employed when it is desired to open
or unlock the door from the oulside. Additionally, how
ever, the subject lock construction includes means actu
atable by the inside handle of the door for rendering the
key ineffective to open the door whereby the door may
be securely locked from the inside and can only be
opened from the inside. In addition, the subject con‘
struction also includes an inside lock means which may
taken in the plane of line ’8——3 of FIG. 7.
25
FIG. 9 is a generally horizontal section through the
lock casing taken in the plane of line 9—9 of FIG. 8.
FIGS. 10 through 12 are partial vertical sections through
the lock casing which correspond generally to FIG. 7 and
which illustrate various operative positions of the com
ponents of the lock construction mechanism.
FIG. 1 illustrates the subject lock construction posi
tioned in a door 1 which is swingably mounted for move
ment to the left of such ?gure in a door frame (not
be rendered openable by the key mentioned previously.
shown). The lock construction in this ?gure is illus
As disclosed herein, the various locking arrangements of
trated substantially full size as are the componentsthere
this invention may all be combined with each other in a
of illustrated in the remainder of the drawing ?gures.
single lock construction or, alternatively, one or more
Such lock construction comprises an outside door handle
locking arrangements may be omitted from a given lock
2, an inside door handle 3 and inner and outer decorative
brass or like escutcheon plates 4 and 6,,respectively. The
construction, depending upon its intended use.
Because the subject door lock construction does not 40 lock construction extends through the door 1 and includes
a slidable locking bolt 7 which extends transversely of
employ conventional rotatable door knobs, opening of
a swingable door on which the present construction is
the door generally parallel to its inner and outer surfaces
employed is simpli?ed in that the natural motion of the
and which normally projects from an edge thereof to be
hand of the person opening the door results in substan
lockingly engaged in a recess of the door frame in the
tially automatic door opening. That is, for example, on ~ well known manner. Bolt 7 extends through a decora
a door hingedly mounted to swing inwardly into a build
tive plate 8 secured by screw fasteners 9 to the edge of
the door. A key actuatable lock device 11 which is oper
ing or a room thereof, the door handle on the outside of
the door is effective when depressed to disengage the
ated by a key 12 may be employed as part of the overall
locking bolt of the lock construction from the door frame
lock construction for a purpose to be described.
so that automatic door opening is effected merely by .
As shown in the sectional view of FIG. 4, the escutcl1~
pushing downwardly on the outside door handle. The
eon plates 4 and 6 are preformed to conform to the
force of such downward pushing is accompanied by an
shape of outer and inner mounting blocks 12 and 13
attendant force directed inwardly toward the door which
respectively between which a hollow sheet metal casing
automatically results in inward swinging of the door when
14 extends and in counterbores of which such casing
the outside handle is depressed. Conversely, a person on
is received. Casing 14 is generally circular in cross sec
the inside of the door need merely pull up or raise the
tion, is generally closed at its opposite ends, and is snugly
inside door handle and such upward force is automati
received in a generally circular bore 16 provided through
cally accompanied by a force which is directed away
the door 1.
from the door which automatically results in the door
Screw type or equivalent fasteners (not shown) are
being swung inwardly all in one smooth operation. This
employed for maintaining the mounting blocks 12 and
is in distincton to conventional lock constructions which
13 operatively engaged with the door in a well known
emp'oy rotatable door knobs which require a ?rst motion
manner so that the casing 14 is securely maintained there
to turn the door knob to disengage the locking bolt and
between. As shown in FIGS. 2 to 4, the inner and outer
a subsequent pushing or pulling operation to effect door
door handles 2 and 3 are preshaped from decorative sheet
opening.
Objects of the present invention include the provision
of a lock construction which is free of conventional ro
tatable door knobs; the provision of a lock construction
in which the locking bolt thereof is retractable upon
depressing or raising a given door handle; the provision
of door handle actuatable means for selectively booking
and locking the bolt of the lock construction in its pro
65 material, such as brass or stainless steel, and are pre
formed to a con?guration having inturned ends 17 and
18 which may be engaged by the ?ngers of a hand during
door opening or locking. While two desirable con?g
urations for the door handles have been illustrated, it‘
should be obvious that many and varied decorative door
handle constructions and con?gurations may be em
ployed, depending upon the decorative effect desired.
3,064,462
4
3
The same is true of the decorative escutcheon plates 4
and 6.
It should be noted that the door handles are of the
non-rotatable type which are distinct from conventional’
rotatable door knobs heretofore employed with door
locks.
As shown in FIGS. 1 and 4, a ?nger operated locking
element 19 is provided on the inside of the door which
projects from the lock casing and beyond the face of
handle bar 23 is channel or U-shaped at its outer end
21 only with the sides thereof at its inner end 28 being
able for a purpose to be described.
handle bar 24 is moved to the upper dotted line position
of FIG. 8. Such raising of handle 3 results in the inner
end 27 of handle bar 24 being depressed which results in
bent into side by side contacting relationship so as to lie
between and inter?t with the opposite sides of the channel
shaped handle bar 24 as illustrated in FIGS. 5, 7 and
10 through 12.
Retraction of the bolt 7 from the projected position of
FIG. 7 to the retracted door opening position of FIG. 10
may be effected by means of the inside door handle 3
the inner escutcheon plate 6 so as to be readily engage 10 by raising handle 3 upwardly so that the outer end of
The door handles 2 and 3 are slidably mounted on
outer projecting ends 21 and 22 respectively of door
the retractor 44 being pivoted about its pivot pin (FIG.
handle bars 23 and 24 (FIGS. 4 and 5) which project
from the lock casing 14 beyond opposite sides of the 15 10) to draw its upper end 43 inwardly of the casing and
door. Desirably set screws vS or other suitable fas
teners are positioned in plates P welded or otherwise
secured to the door handles. Screws S are engaged with
the handle bars and removably maintain the handles on
to draw therewith bolt 7.
the respective handle bars. The respective handle bars
the depressed position shown in dotted lines in FIG. 8.
This effects pivotal movement of the retractor 44 and
attendant retraction of the bolt.
23 and 24 are both pivotally mounted within the lock
casing by means of a common pivot pin 26 which ex
tends transversely of the casing and is engaged with op
posite wall portions thereof as best shown in FIG. 5.
It will be noted that the inside door handle bar 24 is
pivoted on pin 26 substantially intermediate its length
(FIGS. 4-6) so that the inner end 27 of the bar is mov
able upwardly interiorly of the lock casing. In distinc
tion, however, the outer handle bar 23 is pivoted on
pin 26 closely adjacent to its inner end 28.
As illustrated by FIGS. 5, 7, and 10-12, casing 14 at
its bottom is provided with a longitudinal slot 29, the
walls of which arelde?ned by upstanding casing sections
Alternatively, retraction of bolt 7 may be effected by
the outside door handle 2 by pressing the same down
wardly to move the outer end 21 of handle bar 23 to
Because the retractor is spring urged to the normally
projected position shown in FIG. 7, when the handle
employed to retract the bolt is released, the bolt is again
automatically projected and the retractor is returned to
its neutral position.
To facilitate in maintaining the outside handle 2 in
its neutral position with its handle bar 23 generally hori
zontal, desirably a leaf or like spring 51 (FIGS. 4 and 8)
may be operatively interposed between handle bar 23 and
the casing 14 or bore 16 to normally urge such handle bar
upwardly. Obviously, other spring. arrangements also
may be employed if desired. The action of coil spring
31 and 32 between which the handle bars 23 and 24
35 39 upon retractor 44 also aids in normally maintaining
are pivotally movable.
handle 2 in a neutral position.
Projecting laterally from casing 14 is an auxiliary cas
Means for retaining inside handle 3 and its handle bar
ing 33 (FIGS. 7 and 10) in which locking bolt 7 is slid
24 in a horizontal neutral position is shown in FIGS. 6
ably retained for projection or retraction. At its outer
and 8. Such means comprises a generally U-shaped
end auxiliary casing 33 is provided with oppositely di
rected ?ange sections 34 which are to be engaged with 40 spring element 55 the bight portion 56 of which traverses
the top of slot 29 in the casing and engages the opposite
the edge of the door beneath aforementioned decorative
walls 31 and 32 which de?ne the slot. Such casing walls
plate 8 (FIG. 2). Flanges 34 are provided with cut
are provided with opposite substantially rectangular aper
outs 36 at their ends to accommodate the aforementioned
tures 57 (FIG. 8) and spring member 55 is provided adja
screw fasteners 9. Such auxiliary casing 33 is positioned
cent each of its opposite ends with inwardly bent detent
in a laterally extending bore 37 in door 1 which com
portions 58 which normally project into and through the
municates with aforementioned bore 16.
7
wall apertures. As shown in FIG. 8, the inner end 27 of
At its inner end, auxiliary casing 33 is closed off by
handle bar 24 is cut away to provide opposite shoulders 59
a cap member 38 welded or otherwise secured therein
normally engaged with the detents 58. In this manner,
which forms a seat for a coil spring 39 which normally
depression of the outer end of handle bar 24 is resisted by
urges locking bolt 7 to its projected locking position
the detents of the spring element. However, if it is de
shown in FIG. 7. Desirably a rigid link 41 is pinned
at one of its ends to the bolt 7. At its inner end 42
link 41 is provided with a slot engageable with an upper
end 43 of a ?at upright pivotal bolt retractor 44. Such
retractor is swingable adjacent its opposite end 46 on a 55
pivot pin 47 which extends longitudinally of the lock
casing 14. See FIG. 9.
Retractor 44 has the general con?guration of a J and
includes an intermediate projecting portion 48 extending
sired to depress the outer end of such arm to effect block
ing of the retractor 44 as will be described hereinafter,
the effects of the spring element detents can be overcome.
That is, if force is applied to the outer end of handle bar
24, detents 58 may be sprung outwardly so that such de
tents become engaged with opposite sides of the arm and
retain the inner end of the same in the raised position. In
this regard, spring element 55 performs the dual function
It should be noted that if retractor 60 of normally retaining the arm in a neutral position and
selectively retaining the same with its inner end in a raised
44 is pivoted by depressing its lower end 46, its upper
position.
.
end 43 will move to the left as viewed in FIG. 7 and
In this connection, reference is again directed to FIG.
effect compression of spring 39 and retraction of bolt 7
8 which illustrates in the lower dotted lines the outer end
(see FIG. 10) due to the operative interengagement of
the retractor and the bolt by the link 41 interposed there 65 of handle bar 24 pivoted to the depressed position so that
its inner end 27 is raised. It will be noted that when
between.
inner end 27 is thus raised, as shown in FIG. 12, the same
- FIGS. 7 and 8 illustrate the engagement of the re
is brought into direct engagement with the intermediate
s'pective inner and outer handle bars 23 and 24 with the
projection 48 provided on the bolt retractor 44. As a re
lower end of the J shaped retractor. It will be noted
that desirably a U-shaped wear plate 49 is positioned 70 sult, when the inside handle 3 is depressed, positive lock
ing of the door may be effected in that all pivotal move
over the lower end 46 of the retractor to provide a bear
ment of the retractor 44 is precluded by engagement of
ing surface for resisting wear due to relative movement
handle bar 24 therewith and bolt 7 is securely retained in
between the handle bars and the retractor.
laterally therefrom.
A In the embodiment illustrated inside handle bar 24 is
its projected position. Thereafter, bolt retraction can be
channel or U-shaped throughout its length while outside 75 effected only it inside handle 3 is returned to its neutral
w
3,064,462
position by raising the outer end of handle bar 24 to dis
engage the handle bar from the retractor.
Additional means are provided for blocking and pre
cluding pivotal movement ‘of retractor 44 which corn
prises a generally U-shaped blocking member 61 which is
pivotally mounted adjacent the retractor on a pin 62 ex
tending transversely of the casing‘as shown in FIG. 9. It
6
locking the door from the inside which may be e?ectively
counteracted from the outside by turning of key 12 in the
lock device 11.
Such means comprises the aforemen
tioned pivotal locking element 19 which projects from the
inside of the lock construction above inside handle 3. As
shown in FIGS. 8 and 9, locking element ‘19 has an inner
end 71 which normally is engaged with the inner end 64
of the blocking member 61. Element 19 is pivotable in
will be noted that the outer end 63 of blocking member 61
is positioned to overlie the upper surface of outside handle
termediate its inner and outer ends about a pin 72 to that
‘bar 23 (FIG. 8) so that upward movement or raising of 10 movement of the ?nger plate 73 on its outer end in an
such handle bar will effect pivotal movement of such
inward direction results in downward pivoting of the
blocking member. When the inner end 64 of the block
inner end of the locking element 19 and attendant down
‘ing member 61 is in the raised position shown in FIG. 8,
ward pivoting of the inner end of the blocking element 61
.the same is free of engagement with the intermediate
to the locking position shown in FIG. ll. When in this
projecting portion 4-8 of the bolt retractor so that the re
position, however, it should ‘be noted that rotation of
tractor may pivot to the bolt retracting position shown in
cam element 66 by a key in lock device "11 will be effective
"EEG. 10. However, pivotal movement of the blocking
to raise the inner end of the blocking element to free the
member to bring its inner end to the substantially hori
retractor 4-4 in the manner described previously.
zontal position shown in FIG. 11 causes such element to
In view or" the foregoing it should be understood that
engage directly the intermediate portion 48 of the retrac
the subject lock construction maybe employed to posi
tor and to positively preclude pivotal movement of the
tively lock a door in one of three ways: (1) outside handle
retractor so that bolt retraction is positively precluded.
2 may be raised to effect pivotal movement of blocking
Pivotal movement of the blocking member 61 may be
member at to the bolt retractor blocking position of FIG.
effected by raising upwardly on the outer handle 2. As a
11; (2) the locking element 1§ also may be employed to
result, no keys or key actuatable means are required to 25 pivot blocking member 61 to the retractor blocking posi
lock the door from the outside in that after the door has
tion of FIG. 11; and (3) the inside handle 3 may be
been closed it is merely necessary to raise up on the out
depressed so that the inner end of handle ‘bar 24 is raised
side handle 2 to e?ect locking. However, key actuatable
and brought into contact with the bolt retractor as shown
means desirably are provided to effect unlocking of a
in FIG. 12. As noted previously, in the latter case, turn
locked door from the outside. Such means may comprise
ing of key 12 in lock device 11 is ineffective to free the
.the tumbler or like lock device 11 mentioned previously
retractor from the restraining effects of the ‘handle bar
which includes _a rotatable cam element as operatively
pinned or bolted to its inner end as shown in FIGS. 7
and 8-11. Rotation of cam element 66 is e?ected by
turning the key in the lock device 11.
Referring to FIG. 9, it will be noted that blocking mem
‘ber 61 at its outer end is provided with a pair of upwardly
directed, spaced cam shoulders 67 and 68. Such cam
so that door opening can only be effected from the in
side.
If desired, the various locking features may be em
ployed in various combinations and one or more of the
locking features may be omitted from a given lock con
struction. For vexample, if the subject lock construction
is to be used on an internal door of a building, such as a
shoulders are engageable by rotatable cam element 66
bathroom, door, the key actuatable lock device '11 may
when the same is turned so that pivotal movement of the 4:0 be deemed unnecessary. However, generally when the
blocking member 61 from the retractor blocking position
of FIG. ‘11 to the free position of FIG. 7 may be effected.
Cam 66 is generally circular but has a raised eccentric
portion 69 on its periphery which, during rotation there
of, is engageable with the cam shoulders of the blocking
member when the inner end 64 thereof is depressed to
effect depression of its outer end and attendant raising
of the inner end.
subject construction is used with an vexterior building door,
all three locking features described desirably are included.
Attention is now directed to FIGS. 6 through 9 which
illustrate means for automatically returning and maintain
ing outside handle 2 to its neutral position after the same
has been raised to effect pivoted movement of blocking
element 61 as heretofore described.
Such means com
prises a generally U-shaped spring wire '76 which has a
It should be noted in this regard, however, that key
bight portion 77 extending across the walls 31 and 32
12 and lock device 11 have no effect on the inner end of 50 de?ning the slot 29 of the lock casing. The extremities
the handle bar 24 when the same is in its raised locking
of the spring element extend downwardly and have in
position shown in FIG. '12 and in dotted lines in FIG. 8.
turned ends on which are mounted small tapered cam
As a result, a door may be ‘locked from the inside so that
ming elements 78. Such camming elements extend
the only way the same may be opened is by raising the
through apertures provided in the side walls ‘of the casing
inside handle 3 as described previously. This is a de 55 slot and engage the top of the outside handle bar ‘23. As
cided advantage in that even if it were possible for an
a result, when the handle bar is raised to effect block
intruder to pick the lock device '11, such action would
ing of the bolt retractor as ‘described previously, camming
‘have no effect on opening the door if the same were
elements 78 are urged outwardly against the inward urging
‘locked by depressing inside handle 3. Furthermore, be
effects of the spring 76. When upward pressure on the
cause the inner end of the handle bar 24 positively pre
handle bar 23 is released, the inward urging effects of the
cludes movement of the bolt retractor, any attempt to
spring 76 on the conical elements 78 force the handle bar
forcibly move the bolt to its retracted position is posi
'23 and the handle 2 atached thereto to the aforementioned
tively counteracted by the rigidity of the link 41 extend
neutral position.
ing between the bolt and the retractor.
As seen in FIGS. 4 and 7, auxiliary bolt casing 33
FIG. 8 also illustrates in dotted lines that the inner 65 extends through a hole 81 provided in" casing 14. De
end of inside handle bar 24 may be selectively engage
sirably, a positioning plate 82 is fastened by rivet 83 to
able with blocking member 61 to pivot the same out vof
the upper inner periphery of casing '14. Such plate 82 de
engagement with bolt retractor 44. As a result, if the
door is locked from the outside by raising up on outside
handle 2 or is locked from the inside by pressing in locking
element 19 as described, a person inside the door still
may open the same merely by depressing inside handle 3
sirably has oppositely directed diverging ears v84 (see
FIG. 4) spaced from the periphery of easing hole 81 so
that the inner end of auxiliary casing 33 may be located
between such ears and the periphery of hole '81 in the
casing for maintaining the two casings snugly engaged.
to pivot blocking member 61 and by then raising up on
Referring to FIG. 7, disengagement of retractor 44 and
handle 3 to retract the locking bolt.
and link 41 may be easily effected by rotating lock casing
The subject lock construction also includes means for 75 14 in a clockwise direction as viewed in such ?gure. Such
3,064,462
3
7
rotation will effect downward movement of the upper
end 43 of the retractor until the same is freed from en
gagment with the slot in link 41. Re-engagement of the
link and retractor is easily e?ected in a procedure reverse
to that described.
'
Auxiliary casing 33 is slidable in lateral bore 37 provided
in the door, and casing 14 with the mechanism preas
sembled therein is slidable through transverse bore 16 in
the door so that positioning of the lock construction in
actuatable means comprises a rotatable camming element
mounted adjacent an end of said blocking member and
engageable therewith when said member is in said lock
ing position, rotation of said camming element being ef
fective to cause pivotal movement of said blocking mem
ber from said locking position.
4.
For use in combination with a door frame and a
swingable door hingedly mounted on said frame; a lock
construction for maintaining said door closed comprising
a. door and operative interengagement of the link and 10 a casing to be positioned in said door, a spring urged bolt
normally projectable laterally from said door and engage
retractor may be easily e?ected in a short period of time.
After the link and retractor are engaged, the mounting
blocks, escutcheon plates and decorative handles may be
positioned to complete the lock construction.
able with said frame for precluding door opening when
said lock construction is positioned in said door, a pivotal
bolt retractor having an end thereof operatively connected
As will be noted from referring to FIG. 2, a small space
85 may exist in the end wall of casing 14 above or below
outside handle 2 and its handle bar 23 when the handle
is depressed or raised. While the existence of such
space is not generally detrimental in that access to the
with said bolt, and means for actuating said retractor;
said actuating means comprising a pair of pivotal door
handle bars having ends which project from said
While a desirable embodiment of the subject lock con
ber being operatively engageable with a predetermined
casing in opposite directions, each of said bars being
operatively engaged with another end of said bolt re
inner mechanisms of the lock construction is generally 20 tractor, one of said bars being effective when its projecting
end is raised to cause pivoting of said retractor and at
precluded by the outer mounting block 12 when the con
tendant retraction of said bolt, the other of said bars
struction is assembled, to eliminate any possibility of
being effective when its projecting end is depressed to cause
tampering with the mechanism by an intruder, it may be
pivoting
of said retractor and attendant retraction of said
desirable to incorporate a small plate (not shown) either
internally or externally of the casing which will move with 25 bolt, and a blocking member movably mounted in said
casing adjacent said bolt retractor, said blocking mem
handle bar 23 to block any such space at all times.
struction has been disclosed herein, modi?cations thereof
which may become evident to one skilled in the art are
intended to be included within the scope of this invention
and the same should be interpreted in light of the ap
pended claims.
'
portion of said other door handle bar when said project
ing end of said other bar is raised and being movable
thereby from a ?rst position in which said blocking mem
ber is free of engagement with said retractor to a second
position in which said blocking member is directly opera
tively engaged with said retractor and positively blocks
We claim:
the same to preclude pivotal movement thereof.
1. For use in combination with a swingable door to
5. For use in combination with a door frame and a
be mounted in a door frame, a lock construction free of 35
swingable door hingedly mounted onrsaid frame; a lock
rotatable door knobs comprising a casing to be mounted
in said door, a spring loaded bolt mechanism projecting
from said casing including a slidable bolt to be engage
normally with said door frame to preclude swinging move
ment of said door and maintain the same closed, a pivotal
bolt retractor operatively engaged adjacent one of its
ends with said bolt mechanism, a pair of pivotal door
handle bars projecting from said casing in opposite di
construction for maintaining said door closed comprising
a casing to be positioned in said door, a spring urged
bolt normally projectable laterally from said door and
engageable with said frame for precluding door opening
when said lock construction is positioned in said door, a
pivotal bolt retractor having an end thereof operatively
connected with said bolt, and means for actuating said
retractor; said actuating means comprising a pair of
handles are to be mounted, each of said bars being engaged 45 pivotal door handle bars having ends which project from
said casing in opposite directions, each of said bars be
with said bolt retractor adjacent another end thereof,
ing operatively engaged with another end of said bolt
one of said handle bars being e?ective when its outer end
retractor, one of said bars being eifective when its pro
is depressed to cause pivotal movement of said retractor
jecting end is raised to cause pivoting of said retractor
and attendant retraction of said bolt, the other of said
handle bars being effective when its outerrend is raised 50 and attendant retraction of said bolt, the other of said
bars being effective when its projecting end is depressed
to cause pivotal movement of said retractor and attendant
to cause pivoting of said retractor and attendant retrac
retraction of said bolt, a blocking member pivotally
tion of said bolt, said one handle bar having an opposite
mounted in said casing adjacent said retractor, a locking
end thereof which is operatively engageable with said
element having a portion thereof located externally of
said casing and another portion engaged with one end 55 bolt retractor when said projecting end of said one bar
is depressed to block and positively preclude pivotal
of said'blocking member for moving said member to a
movement of said rectractor, whereby retraction of said
locking position in which said member engages an inter
bolt may be positively precluded merely by depressing said
mediate portion of said retractor whereby pivotal move
one handle projecting end.
ment of said retractor is precluded, said one handle bar
6. For use in combination with a door frame and
when its outer end is raised being engageable with an 60
swingable door hingedly mounted on said frame; a lock
other end of said blocking member for moving the same
construction for maintaining said door closed comprising
to said locking position, said other handle bar having
a casing to be positioned in said door, a spring urged bolt
an inner end portion thereof engageable with said retrac
normally projectable laterally from said door and en
or intermediate portion when the outer end of such bar
gageable with said frame for precluding door opening
is depressed whereby retraction of said bolt may be pre
when said lock construction is positioned in said door, a
cluded, and key actuatable means engageable with said
pivotal bolt retractor having an end thereof operatively
blocking member for moving the same from said lock
connected with said bolt, and means for actuating said
ing position, said key actuatable means being ineffective
retractor; said actuating means comprising a pair of
for moving said other handle bar inner end portion from
pivotal door handle bars which extend from said casing
engagement with said retractor intermediate portion.
in opposite directions with an end of each bar projecting
2. The lock construction of claim 1 including means
beyond opposite sides of said door when said lock con
for normally maintaining said handle bars in neutral posi
struction is positioned in said door, each of said bars be
tions between their respective raised and depressed posi
ing operatively engaged with another end of said bolt re
tractor,
one of said bars being effective when its pro
3. The lock construction of claim 1 in which said key
rections on the outer ends of which non-rotatable door
tions.
‘
i
3,064,462
jecting end is raised to cause pivoting of said retractor
and attendant retraction of said bolt, the other of said
bars being effective when its projecting end is depressed
to cause pivoting of said retractor and attendant retrac
tion of said bolt, a blocking member movably mounted in
said casing adjacent said bolt retractor, and a locking
element operatively engaged at one of its ends with said
blocking member, the other end of said locking element
projecting from said casing in the same direction of one
atable by said ?rst door handle upon raising thereof for
positively engaging and physically blocking said bolt re
tracting mechanism whereby the need for keys or the like
to effect locking of said lock construction from the out
side of said door is precluded, said second door handle
having a portion thereof directly engageable with said
bolt retracting mechanism when said second door handle
is depressed for positively blocking said mechanism
whereby said lock construction ‘may be locked from the
of said handle bars so as to be accessible from a side of 10 inside of said door merely by depressing said second
said door when said lock construction is positioned in said
door, said locking element being effective when moved
handle.
9. For use in combination with a swingable door to
relative to said casing to e?’fect movement of said blocking
be mounted in a door frame, a lock construction com
member from a ?rst position in which said blocking mem—
prising bolt mechanism projecting from said casing in
ber is free of engagement with said retractor to a second 15 cluding a movable bolt, a bolt retractor operatively en
position in which said blocking member is directly oper
atively engaged with said retractor and positively pre
cludes pivotal movement thereof, whereby retraction of
said bolt may be positively precluded upon moving said
locking element.
7. For use in combination with a door frame and a
swingable door hingedly mounted on said frame; a lock
construction for maintaining said door closed comprising
a casing to be positioned in said door, a spring urged
gaged adjacent one of its ends with said bolt mechanism,
door handle bar structure projecting from said casing in
opposite directinos, said bar structure being operatively
engaged with said bolt retractor adjacent another end
thereof, said bar structure being effective when moved in
a given direction to cause movement of said retractor
and attendant retraction of said bolt, a blocking member
movably mounted in said casing adjacent said retractor,
said blocking member being movable between a ?rst posi
bolt normally projectable laterally from said door and 25 tion in ‘which said member is free of engagement with
normally engageable with said frame for precluding door
said retractor and a second position in which said mem
opening when said lock construction is positioned in.
ber directly engages said retractor and positively pre
said door, a pivotal bolt retractor having an end thereof
operatively connected with said bolt, and means for
actuating said retractor; said actuating means comprising
a pair of pivotal door handle bars which project from
ciudes movement thereof so that retraction of said bolt is
positively precluded when said member is in said sec
ond position, said bar structure being directly and se
lectively engageable with said blocking member for mov
ing said member to said second position, and other ‘means
engaged with another end of said bolt retractor, one of
independent of said bar structure for moving said block—
said bars being effective when its projecting end is
ing member to said second position, whereby said bolt re
raised to cause pivoting of said retractor and attendant 35 tractor may be positively blocked to positively preclude
retraction of said bolt, the other of said bars being e?ec
retraction of said bolt.
tive when its projecting end is depressed to cause pivot
10. The lock construction of claim 9 which includes
ing of said retractor and attendant retraction of said bolt,
key actuatable means operatively engageable with said
a blocking member movably mounted in said casing ad
blocking member for moving the same from said second
jacent said bolt retractor, said blocking member being 40 position to said ?rst position, whereby said bolt retractor
operatively engageable with a predetermined portion of
and said bolt may be freed from blocking.
said other door handle bar and movable thereby from
11. The lock construction of claim 9 in which said
a ?rst position in which said blocking member is free of
handle bar structure includes a portion which is selec
engagement with said retractor to a second position in
tively and directly engageable with said bolt retractor for
which said blocking member is directly operatively en
positively blocking the same independently of said block~
gageable with said retractor for positively precluding
ing member.
pivotal movement thereof and thereby positively pre
12. A lock construction comprising a casing, bolt mech
cluding retraction of said bolt, and key actuatable means
anism projecting from said casing including a slidable
operatively engageable with said blocking member for
bolt, a pivotal bolt retractor operatively engaged adja
moving said blocking member from said second position
cent one of its ends with said bolt mechanism, a pair of
to said ?rst position, whereby said bolt member may be
pivotal
door handle bars projecting from said casing in
freed for retraction by said handle bars.
said casing in opposite directions, each of said bars being
n
opposite directions on the outer ends of which non-rotat
8. A door lock construction for use in combination
able door handles are to be positioned, each of said bars
with a swingable door, comprising a slidable bolt, mech
anism for retracting said bolt from a projected position 55 being operatively engaged with said bolt retractor adja
cent another end thereof, one of said handle bars being
to a retracted position, and non-rotatable handle means
e?ective when its outer end is depressed to cause pivotal
for actuating said bolt retracting mechanism comprising
movement of said retractor and attendant retraction of
?rst and second door handle operatively connected with
said bolt, the other of said handle bars being effective
said mechanism and locatable externally of said door on
opposite sides thereof, each of said handles normally be 60 when its outer end is raised to effect pivotal movement
of said retractor and attendant retraction of said bolt, a
ing retained in a predetermined neutral position in which
blocking member movably mounted in said casing adja
said bolt is in its projected position, retraction of said
cent said retractor, said blocking member being movable
bolt being effected by depressing said ?rst handle from its
between a ?rst position in which said member is free of
neutral position or by raising said second handle from
its neutral position, said lock construction being posi 65 engagement with said retractor and a second position in
which said member directly engages said retractor and
positively precludes movement thereof so that retraction
of said bolt is positively precluded when said member is
whereby simultaneous depressing and pushinv of said
in said second position, one of said handle bars being
?rst handle will automatically result in inward swinging
directly and selectively engageable with said blocking
tionable in a door which is swingable inwardly into a
room so that said ?rst handle which is depressed to
e?ect bolt retraction is located on the outside of said door
movement of said door, and so that said second handle
which is raised to e?ect bolt retraction is located on the
member when said one bar is raised for moving said
member to said second position, the other of said handle
bars including a portion thereof which is directly and
inside of said door whereby simultaneous raising and
pulling of said second handle will automatically result in
selectively engageable with said bolt retractor when said
inward swinging movement of said door, and means actu 75 other bar is depressed for positively and directly blocking
3,064,462
11
said retractor and thereby precluding retraction of said
bolt.
13. The lock construction of claim 12 which includes
means independent of said one handle bar which is oper
atively and selectively engageable with said blocking mem
ber for moving said member to said second position.
14. For use in combination with a door frame and a
7
12
,
_
traction of said bolt and opening of said door is posi
tively precluded when said bolt is blocked by said block
ing means; said means comprising a movable bolt retractor
in said casing operatively interposed between said handle
bars and said bolt, said retractor being rigidly connected
with said bolt so that said bolt cannot be retracted when
said retractor is held stationary, and blocking structure
in said casing selectively movable between ?rst and second
swingable door hingedly mounted on said frame, a lock
positions in which said structure respectively is engaged
construction for maintaining said door closed and locked:
said lock construction comprising a casing to be positioned 10 with and free of engagement with said retractor; said
locking bolt when said blocking structure is in said second
in said door; only one single locking bolt projectible from
position being positively precluded from retractive move
and movable relative to said casing, said locking bolt
ment relative to said casing whereby unauthorized retrac
being normally engageable with said frame when said
tion of said bolt to permit opening of said door thereby
lock construction is positioned in said door and said door
'
is closed for maintaining said door closed and locked 15 is positively precluded.
when desired; a pair of door handle bars movably mounted
in said casing and projecting therefrom in opposite di
References Cited in the ?le of this patent
rections, each of said handle bars being operatively con
UNITED STATES IPA'l‘EN’l‘Sv
nected with said locking bolt, each of said handle bars
527,944
Coppage _____________ __ Oct. 23, 1894
being eifective when its projecting end is moved in a
880,985
Grann _______________ __ Mar. 3, 1908
given direction to eifect retraction of said bolt relative to
1,965,789
Anglyn ______________ __ July 10, 1934
said casing; and means in said casing for positively block
ing said locking bolt and positively precluding retraction
thereof relative to said casing whereby unauthorized re
2,895,322
Pollock ______________ __ July 21, 1959
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