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Патент USA US2120647

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June 14, 1938. r
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DOOR Lécx
2,120,647
Filed Sept. 8, 1954
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Filed Sept. 8, 1934
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June 14, 1938.
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DOQR LOCK
Filed Sept. 8, 1934
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8 Sheets-Sheet 4
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June 14, 1938.
M. PAPST
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2,120,647
DOOR LOCK
- Filed Sept. 8, 1934
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June 14, 1938.
M. PAPST
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Filed Sept. 8, 1934
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DOOR LOCK
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2,120,647
Patented June 14, 1938
UNITED STATES PATENT OFFiCE
2,120,647
DOOR LOCK
Max Papst, Paris, France
Application September 8, 1934, Serial No. 743,170
In Germany September 15, 1933
23 Claims.
The present invention relates to looks and more
particularly to looks provided with a latch bolt
to be actuated by a door handle.
In conventional locks of this class, the door
(Cl. ‘YO-+203)
key or from the inside by means of a special
locking member.
Further details and objects of the invention
will be apparent from the description hereinafter
seized by the user’s hand. A projecting handle,
and the accompanying drawings illustrating sev Ul
eral embodiments of the invention by way of
however, is disadvantageous wherever only a re
example.
handle projects from the door so that it can be
stricted space is available (narrow corridors, fur
niture in small rooms) or where, as for instance
10 in vehicles (automobiles, aeroplanes) projecting
parts would be objectionable.
rI‘he present invention obviates this incon
venience and allows the door handle, when not
used, to be brought close to the door or counter
" sunk into the same or into a socket disposed on
the door.
There are door handles known in the
10
.
Fig. 2 is a longitudinal section through the door
lock according to Fig. l with the handle in its
inoperative position;
v
Fig. 3 is a top plan view of a door lock accord
ing to Fig. 1;
Fig. 4 is a cross section along line X-—X of
Fig. 1;
inward and outward movements of such handles,
however, are possible only after the door handle
has been'unblocked from its end position by
Fig. 1;
means of a key.
Such a door handle can and must be counter
‘
tion;
The
art which can be countersunk into a socket.
In the drawings,
Fig. 1 is a longitudinal section through a door
lock with a slidable handle in its operative posi
Fig. 5 is a cross section along line XI-—XI of
Fig. 6 is a longitudinal section through the mov
ing member of Fig. 1;
>
Fig. ,7 is a longitudinal section through another
door lock with a slidable handle in its operative
sunk only after the room or vehicle to be closed
thereby has been left. It would be an inadmis
position;
sible risk e. g. to drive with such a door handle
countersunk, since in the case of an accident the
driver could not receive any assistance from the
ber partly developed, in the operativev position
outside.
The present invention avoids these inconven
iences. The door handle as per this invention
can be pushed close to the door wall or counter
sunk into the same or into a socket without the
help of a key when not in use, and can be re»
7 moved from this position (neutral position) into
cia bl the accessible position (operative position) again
without the use of a key. In these end positions
the door handle is blocked by members which
can be disengaged without a key, and in the case
‘ of emergency the handle can be actuated by third
40 persons. Owing to this fact, one may drive a car
with such a door handle in its retracted position.
It is another feature of the invention that
means may be provided for bringing the door
_ handle into its operative and into its inoperative
) positions from the inside of the door (e. g. the
interior of the car) as well as from the outside.
This may be accomplished by the actuation of a
special member.
According to the invention the
door handle can also be automatically retracted
by the door being shut.
According to another feature of the invention,
safety against theft may be insured by the fact
that the door handle may be locked in its re
tracted position‘ from the outside by means of a
Fig. 8 is a top plan View of the outside actuat
ing member and the bush with the moving mem
of the handle;
Fig. 9 is a top plan view of the bush as seen in
30
the direction of the arrow A of Fig. 8;
Fig. 10 is a longitudinal section through the
door lock according to Fig. 7 in its inoperative
position;
Fig. 11 shows another door lock with a slidable
handle in its operative position;
Fig. 12 is a top plan view of the outside actu
ating member and bush with the moving mem
ber partly developed, in the operative position of
the handle;
Fig. 13 shows a door lock according to Fig. 11
in its inoperative position;
Fig. 14 is a top plan view of the actuating mem»
her with the moving member partly developed,
in the inoperative position of the handle;
Fig. 15 is a longitudinal section through an
other door lock with a slidable handle, in its in
45
operative position;
Fig. 16 is a semi~diagrammatical view of the
door lock according to Fig. 15, in the operative
position of the handle, the guiding surfaces in
the handle shank and guiding cylinder being
shown in development.
Fig. 1'7 is a top plan view as of the lock of Fig.
16 but shows the handle in its inoperative posi
tion and the bush partly broken away;
55'
2
'
2,120,647
Fig. 18 is a longitudinal section through an
other door lock with a slidable handle in its op
erative position;
Fig. 19 is a top plan view of the door lock ac
cording to Fig. 18, partly broken away;
Fig. 20 is a cross section along line III-III of
Driver bar I51 has a knob I6I at its
I33 when turned.
A tension spring I 62 and a
compression spring I63 are so arranged as to
Fig. 21 is a partial View as seen in the direction
of the arrow E‘ of Fig. 18;
10
Fig. 22 is a longitudinal section through an
other door lock with a slidable handle in its op
erative position;
exert their action between the knob I6I and the
driver sleeve I33.
The door lock operates as follows: When pro
10
jected in its operative position as in Fig. 1, the
handle may be turned as usual, and in this case
Fig. 23 is a top plan view of the door lock
shown in Fig. 22, partly broken away;
Fig. 24 is a top plan view of the door lock
shown in Fig. 22 with the handle in its inopera
the guide pin I43 of the handle shank I36, I31
guides the same in the cross groove I28 of the
bush I 2| (Fig. 4). In order to retract the door 15
blocking member for holding the handle in its
end positions may be released from the outside
handle from the operative position according to
Fig. 1 into the inoperative position according to
Fig. 2, the push button part (cylinder lock) I50
projecting in this position must be pressed in.
The latter is then guided in a straight line by the 20
tumblers I52 sliding within the slots I40 of the
handle shaft part I36, and it can be turned only
by pressure'alternatingly exerted on an' actuat
in case the tumblers are retracted by the inser
tive position, partly broken away;
Fig. 25 is a section along line VIII-—VIII of
Fig. 29.
20
it extends.
end, and is adapted to take along driver sleeve
Fig. 19;
15
bordered by the surfaces I59 and I60. The driver
bar is guided by the square hole I39 of the handle
shank and by a driver sleeve I33, through which
Figs. 1 to 6 show an embodiment in which a
ing member and on the door handle. The spring
25 under the action of which the blocking member
arrests the door handle in its end positions is ten
sioned by the preceding releasing movement.
In the Figs. 1 to 6, member I20 is an escutch
eon fastened to the door I00. A bush I2I is se
30 cured to escutcheon I20 inserted in the door, and
provided with slots I22 (see Fig. 3) and with re
cesses I23, I24 having edges I25, I26.
Into the
bush, also a longitudinal groove I21 is machined
the continuation of which is the cross groove I20.
35 At its end remote from the escutcheon, the bush
is covered by an oscillatable bottom piece I29
(Fig. 1) which is connected by screws I30 with a
wing guide I3I slidable in the slots I22 of the
bush.
A compression spring I32 bears against
To the bottom piece I29, a
40 wing guide I3I.
square driver sleeve I33 is secured which engages
the roll back I34 of the lock. A handle I35 is
rigidly connected with a sleeve I36 which is cov
ered by a second sleeve I31. Parts I36 and I31
45 are rigidly connected with each other and form
together the handle shank.
The inside sleeve I35
is provided with a round bore I33 to which a
square hole I39 is connected. The sleeve I36 is
further provided with slots I40 and I 65. A re
50 cess extending through the two sleeves I36 and
I31 of the handle shank is designated by MI.
The tapered end of the part I36, together with
part I31, forms a hollow space I42 for lodging one
end of a compression spring I32. A guide pin
55 I43 is provided in the handle shank. A locking
cylinder I44 (see Fig. 6) is lodged in the round
bore of the handle shank. It is secured therein
against axial displacement, but rotatable in re
lation thereto.
The locking cylinder has a heli
60 cal slot I45 the continuation of which is the
cross slot I46. A spring I49 (Fig. 6) fastened to
the locking cylinder and carrying a blocking
member I48 extends through a recess I41.
tion of a key. The lug I53 of the push button
part I5I slides axially in the helical slot I45 of 25
the locking cylinder I44 and, thus, causes the
same to turn. When the locking cylinder is be
ing turned the blocking member I 40 which ex
tends, in the operative position of the handle
through the recess I4I of the handle shank I 36, 30
I31 into the recess I23 of the bush IZI, will be
forced by the edge I25 (Figs. 3 and 4) of the re
cess I23 into the interior of the locking cylinder
I44 and thus will be withdrawn from its block
ing position. When a further pressure is exerted
35
on the push button, the handle I35 with its shank
I36, I31 will be moved along while blocking mem
ber I48 slides on the inner surface of bush I2I
until it is caused by the spring I49 to pass through
the recess and to bear against the wall of the
latter (Fig. 2). Simultaneously handle I35 has
been sunk into the escutcheon I20 but there re
mains a clearance I64 between the inside face
of the handle and the bottom of the escutcheon.
' The same clearance also exists between the end
45
of the handle shank and the lug I56.
The same sequence of movements takes place
when the driver bar I51 is retracted by means of
the knob I6I. At ?rst the driver bar is caused
to bear with the surface I60 of the groove I50
against the lug I56 of the lock rod I55 so as 60
to entrain the same and then, through head I54,
it causes the push button I50, I5I ‘to slide in
wards which movement imparts a rotatory move
ment to the locking cylinder I44. As described,
this will bring the blocking member I48 out of 55
engagement with recess I23, and the handle may
be moved on until it will be arrested in the posi-.
tion shown by Fig. 2. The knob I6I when re
leased jumps back under the action of the tension
spring I62 until it gets into the position de?ned 60
by the pressure spring I63. In this way the
knob is prevented from projecting excessively into
A push button protrudes from handle I35. The
65 button is slidably arranged in the handle shank,
the interior of the car.
The handle and the handle shank thereto con
nected may be moved into the operative position 65
from the outside by a pressure exerted on the
of the cylinder lock are designated by I52. The
extension I5I carries a guide lug I53. A look rod
handle I35, the clearance I64 being utilized to
this end. The push button I50,_,~ I 5| is held in
relation to the bush I2I through the lock rod I55
which bears with its lug I56 against the wing 70
guide I3! of the bottom piece I33. There is thus
produced a relative movement of the push button
I50, [5! with respect to the handle shank I36,
and comprises a cylinder lock I50 and an ex
tension I5I secured to the same. The tumblers
70 I55 having a head I54 at one of its ends and a lug
I56 at its other end is housed in the handle
shank. Head I54 is lodged in a hollow space be
tween cylinder lock I50 and extension I5I. A
driver bar I51 is provided with a groove I58 in
75 which look rod I55 may slide. This groove‘ is
I31 in a direction opposite to that of the pre
ceding movement. A turning movement in a 75
3
2,120,647
direction opposite to the preceding one is im
parted to locking cylinder I44 by lug I53 ‘sliding
'6'! and a collar 68. The cylinder lock has an
extension 34 which carries a guiding pin '35 on .a
projection 35.
in the helical groove I45. This movement re
tracts blocking member I48 (Fig. 3) from the
edge ‘I26 of the recess I24 of the bush I.2I again
into the interior of the locking cylinder and out
it may be turned a certain degree in relation
of its ‘blocking position. Under the in?uence of
‘thereto.
the compression spring I32 the handle shank is
projected until the blocking member ‘again en
other end.
10 gages with the recess I23 of the bush. The same
effect may be obtained from the inside by the
knob It! being (pushed in. The surface I159 of
the driver bar presses on the lug I56 of the lock
rod I55 and thus on the push button part I50
15 thereto connected through the :head I54. In this
manner the sliding movement required for turn
ing the locking cylinder is directly imparted to
the push button.
The operative member for arresting the door
20 handle, viz. the push button I 50, I5I can be
locked in the inoperative position of the handle
as fol1ows:--After the insertion of the key in
the cylinder lock the latter is turned, and the
lug I53 slides into the cross groove I46 of the
25 locking cylinder I44 so as to .prevent any axial
movement of the push button. The handle can
no more .be moved outwards and is protected
against any operation. When the key is with
drawn, the tumblers I52 (Fig. 2) engage with
30 the slot I55 of the handle shank so that the push
button part I5!) is secured again against any
.turning.
Figs. 7 to 10 show an embodiment which is
operable from the outside in the same way as the
embodiment shown by Figs. 1 to 6, in which how
ever the springs acting on the blocking member
are tensioned by the displacement of the door
handle.
In the Figs. 7 to 10 the numeral I signi?es an
A bush 2
is connected to the escutcheon and inserted in
the door. It is provided with recesses 3 and 4
which are connected byia longitudinal recess 5
40 escutcheon fastened to the door I05.
so as to form a Z-shaped slot (see Fig. 8) in
45 which springs 3i and 32 are placed.
The bush
is further provided with a longitudinal slot 6
the continuation of which is a cross slot ‘I (see
Fig. 9).
At the end remote from the escutcheon,
the bush is covered by an oscillatable bottom
50 piece 8 which is guided through pins 9 in slots
H] of the bush. A compression spring II .bears
against the bottom piece. A square driver sleeve
I2 connected for rotation with roll-back I3 of
the lock is rigidly secured to the bottom piece,
and a hollow driver bar I5 is rigidly connected to
the driver sleeve. The bottom piece, driver sleeve
and driver bar may also be made integral with
one another. The door handle I5 is rigidly con
nected with the handle shank I ‘I- The handle
60 shank is provided with a round bore I8, a square
hole I!) and slots 20.
Guiding pins 2|, 22 and 23
are fastened to the handle shank which is pro
vided with a recess 24.
A hollow space serves
for‘taking up a compression spring II. In the
round bore It of the handle shank, a locking
cylinder 25 is mounted for rotation, but secured
against longitudinal displacement by the guiding
pin 22. Looking cylinder 26 is provided with a
helical slot 2'! with guiding surfaces 65 and Y55,
70 the continuation of which slot is a cross slot
28. The locking cylinder further carries a pro
jection 29 which in turn carries a blocking mem
ber represented by a pin 30.
Within the handle
shank slides a push buttonconsisting of a cylin75 der lock 33 provided with tumblers 64, .a groove
A draw bar 31 is so mounted with one of its
ends in.the extension of the cylinder lock that
The draw bar carries a wing M at its
On the inside of the door there is a
swingable handle 48 for pulling the door shut.
This handle has a tubular projection into which
the draw bar 31 extends with its wing 4| through
the opening 38.
The wing M can move in the
T-shaped slot 39 of the tubular projection. A
tension spring 43 pulls the inside handle towards
the door so that it is caused to bear against the 155
compression spring 42.
The new door lock operates as follows:-The
door handle being in its projected position shown
in Figs. '7 and 8, can be actuated in the usual
manner when the guiding pin 23 of the handle
shank I? guides the latter in the cross slot 1
20
of the bush 2 (Fig. 10). In order to move the
door handle inwards it is necessary to press the
push button (cylinder lock) .33 which projects "in
this position. The same is then guided axially 25
in a straight line by the tumblers 64 sliding in
the slot ‘20 of the handle shank as well as by the
pin 2! sliding in the slot 51. The guiding mem
ber (pin) 36 carried by the projection .35 of the.
extension 34 slides axially along the surface 55
of the helical slot 21 (Fig. 8) and imparts to the
locking cylinder a rotatory movement by which
the blocking member 30 is urged out of the recess
3 of the bush and thus out of its blocking position,
against the resistance of the spring 3i. When
the pressure on the push button is continued, the
collar 68 is caused to bear against the handle
shank 20 so as to push the same, together with
the handle, into the interior of the escutcheon
and the bush respectively, while the pin 23 slides
in the longitudinal slot 5 (Fig. 9) until the block
ing member has arrived in front of the recess 4
of the bush. In this instant the blocking niein~
ber is urged into the recess 4 under the in?uence
of the spring 32 and thus into its second blocking
position. At the same time the locking cylinder
26 connected with the blocking member will be
turned, so that the guiding member 35 of the
extension of push button 34, 35 is caused to bear
against the surface 66 of the helical slot 21 of
the locking cylinder. The handle is then in its
30
85
to
50
retracted position (Fig. 10).
The same sequence of movements takes place
when the inside handle MI is pulled in order to
shut the door. Thereby, the wing 4| is caused vto
bear against the bottom of the projection in the
handle 40 so that the draw bar 31 transmits the
pulling movement to the cylinder lock 33. When
collar 68 of the cylinder lock 33 bears against the
handle shank, the door handle will be retracted 60
with the same pulling movement until the block
ing member is brought again into its blocking
position (Fig. 10) as described. When handle 40
is released, it jumps back into its initial position
due to the action of spring 43. In order to move 65
the handle and shank from the outside into the
projected or operative position, the handle proper
is ?rst to be pushed inward, clearance 69 being
utilized to this end (see Fig. 10), while push but
ton 33 is retained by the solid driver bar I5 and
extension 34. Thus, a relative movement of the
push button 33 with respect to the handle shank
I'i takes place in a direction opposite to the pre
ceding one. A turning movement, also opposite
to the preceding one, is imparted to locking ‘cyl
4
2,120,647
der 26 by the guiding member 36 sliding along
ing position. In the same way as described with
bush until it has arrived in front of the longi
tudinal slot 5. Thereupon, the handle shank Will
respect to the arrangement of Figs. '7 to 10 the
handle 16 is pushed outwards together with the
be projected by compression spring ll. At the
handle shank I‘! under the action of compression
spring II, and is brought into the arrested posi
end of the longitudinal slot 5 the blocking mem
ber will be urged by spring 3| into the recess 3
10 of the bush so as to get again into its blocking
position.
7
The same effect is obtained from the inside by
a pressure exerted on the handle 40.
This pres
sure exerted against the action of the spring 42
15 is transmitted to the draw bar 31. Thus, the
cylinder lock is pushed outwards .and the block
ing member is turned out of its blocking position.
The door handle is arrested in its retracted po
sition by means of guiding member 35 which is
20 urged into the cross slot 28 of the locking cylinder
by the rotation of the cylinder lock.
From the inside the door handle may be locked
in its inoperative position by the wing 4| being
urged into the cross branch of the slot 39. As
25. the draw bar is rotatably mounted in the cylin
der lock, for instance by means of a screw thread
connection, the draw bar may be turned the re
quired angle in relation to the cylinder lock which
is held against rotation by the tumblers 64. On
30 account of the slanting position of the said cross
branch the spring 42 will be compressed so that
the cylinder lock is held through the draw bar 3'!
without any clearance.
Figs. 11 to 14 show a similar embodiment, in
which however unblocking from the operative po
sition tensions a spring acting on the actuating
member. The said spring unblocks the handle
from its neutral position by pushing the actuat
ing member back towards the inside.
In Figs. 11 to 14 numeral 44 signi?es a com
40.
pression spring, 45 a notch in the bush, 46 a re
cess in the bush, 4'! a clearance, 48 an escutcheon
and 49 a supporting ring. All other parts are
designated by the same numerals as the corre
45, sponding parts in Figs. '7 to 10.
The arrangement illustrated by Figs. 11 to 14
works as follows:—The door handle may be. re
tracted from its operative position, from the out
side or the inside, in exactly the same manner as
in the arrangement shown by Figs. 7 to 10. When
this is done, compression spring 44 supported by
the handle shank l1 through the supporting ring
49 is compressed and the blocking member 3%]
urged into the notch 45 of the recess 46 of the
bush 2 (see Fig. 14). In this retracted position
(Fig. 13) the collar 58 of the push button 33 is
flush with the surface of the door handle 16.
The push button guided in an axial direction is
held against the action of the spring 44 by the
60 guiding member 36 bearing against the surface 66
of the helical groove 2] of the locking cylinder
26, and since the locking cylinder is not allowed
to turn in this position, blocking member 30 is
kept in the notch 45.
The handle may be pro
65 jected from the position shown in Fig. 13 by a
pressure exerted on the handle so ‘as to push it
inward as far as the depth 41 of notch 45. For
this purpose, a small clearance 4'.” is provided
between door handle I6 and escutcheon 48 (Fig.
70 13). This movement releases the blocking mem
ber from the notch so that the locking cylinder 26
may turn again. Now, spring 44 presses the
push button 33 outwards together with the guid
ing member 36, and the latter slides along the sur
w.
impart to the locking cylinder a rotatory move
ment by which the blocking member connected
with the said cylinder is urged out of its block
the surface 66 of the helical slot 21. In this way
the blocking member 3!] is urged, against the ac
tion of the spring 32, out of the recess 4 of the
face 66 of the helical groove 21 (Fig. 14) so as to
tion through the agency of blocking member 30
and spring 3|. With this arrangement, however, 10
the handle cannot be operated from the inside
to project it into its operative position.
Figs. 15 to 17 show an embodiment in which
unblocking is accomplished from the outside in
either end position by pressure being exerted 15
on the actuating member.
In Figs. 15 to 17 numeral 50 designates the door
handle, 51 the handle shank, 52 the push but
ton, 53 an intermediate piece, with respect to
which the push button 52 is oscillatable and which 20
carries a guiding member (pin) 54 extending
through the guiding cylinder described herein
after into the bush. The intermediate piece is un
der the in?uence of the spring 8|. 55 represents
a guiding cylinder provided on its one end with 25
an indenture formed by helical guiding surfaces
55, 51, and, at the opposite end, with a coupling
lug 10. The handle shank is provided with a re
cess formed by axial guiding surfaces '62, B3 and
by helical guiding surfaces 58, 59, 84 and 85. 30
Moreoverthere is provided a locking cylinder ‘ll
which at its one end has a coupling recess formed
by the surfaces ‘l2, l3 and at its other end carries
the blocking member 14. The bush has two re
cesses 15, 16 and a longitudinal slot 1‘! connect
35
ing said recesses, and being provided with springs
l9 and BB. Numeral 38 designates a draw bar.
A lock 85 with a tongue Bl is lodged in the door
handle. A compression spring for the handle
shank is' marked by 89.
The arrangement shown in Figs. 15 to 17 works
as followsz-In order to retract the door handle
58 and the handle shank 5i pressure is to be
exerted on push button 52 to shift it into the
interior of the handle shank together with the
intermediate piece 53 connected with it for move
ment in axial direction but oscillatable with re“
spect thereto. When button 52 is pushed inward
guiding member 54 engages the helical guiding
surface 5? (Fig. 16) of the guiding cylinder 55 and 50
will be displaced in the direction of the arrow B
while the intermediate piece 53 is turned. Dur
ing its further movement the guiding member is
at the same time caused to bear against the heli
cal surface 59 of the handle shank 5i and also
against‘ the guiding surface iii of the guiding cyl
inder 5i. When the movement of the guiding
member 54 continues, the guiding cylinder will
be turned until the guiding surface 8! registers
with the guiding surface 63 of the handle shank. 60
In turning theguiding cylinder takes along the
locking ‘cylinder ‘H by means of the projection
10 which bears against the surface 72 of the lock
ing cylinder. This urges the blocking member
"14 rigidly connected with the locking cylinder,
out of the recess ‘i5'of the bush ‘l8 and thus out
of its locking position. When the push button
52 is further depressed the handle 52 and the
handle shank 5! are pushed into the bush, until
the blocking member 14, sliding in the lon 70
gitudinal slot ‘1?, has arrived in front of the
recess 36. From this position the blocking mem
ber will be urged by the spring 19 into the re
cess ‘l5 and thus into its blocking position. At
the same time the locking cylinder is turned in 75
2,120,647
the :direction of ‘the arrow B until its surface 13
is caused to bear against the lug T0 of the guid
ing cylinder. Consequently the additional angu
=lar displacement of the'locking cylinder as ef
fected ‘under the in?uence of the spring 19 does
not impart an additional rotatory movement to
tumblers 316. The cylinder lock is housed in a
sleeve 31‘! provided with slots 33‘! for the tum
blers of the lock and with an angular slot formed
by the branches 3H8 and 338 (Fig. 21). A guid
ing screw 3l9 is secured to the cylinder lock and
an extension 320 is screwed into the cylinder
the guiding cylinder. The push button being now
look by means of its portion 32l. The extension
released returns, ‘the same as the guiding mem
has a recess 323 and‘is further connected with a
v:ber 54, ‘under the pressure of spring 81 into its
initial position shown in Fig. 1'7 while the guid
ing member slides in guiding slots which are at
v?rst formed by the guiding surfaces 63 and El
draw bar 322.
A. coupling piece 324 is secured
to the handle shank in a recess 314 of the shank 10
by means of- screw 305. Other recesses 325 and
In order
3-20 (see Fig. 20) are also provided in the shank.
A blocking member 32'! having a round head 328
and a hole 320 is so arranged as to engage said
recesses 325 and 326. A lever spring 330 with :15
to project the door handle and the handle shank
‘from the inoperative position pressure is to be
exerted again on the push button 52 which is
thus displaced into the interior of the handle
shank together with the intermediate piece 53.
In consequence thereof, guiding member 54 will
engage the helical guiding surface 56 of the guid
ing cylinder 55 (Fig. 17) and will be urged in
arms 35‘! and 332 approximately at right angles
to each other is mounted on spindle 304. Two
compression springs 333 and 334 are lodged with
in sleeve 301.
120
This structure operates as follows:
In Fig. 18 the door handle 30! is shown in its
projected or operative position. When the door
handle is actuated movement is transmitted
on ‘the one hand and 82 on the other hand, and
then by the helical guiding surfaces 84 on the
v15 one hand and 51 on the other hand.
the direction of the arrow C while the interme
525 diate piece 53 will be angularly displaced. When
its movement continues, the guiding member is
at the same time caused to ‘bear against the he1i~
cal surface 58 of ‘the handle shank 5i and against
the guiding surface '50 of the guiding cylinder
51. ’When guiding member 54 ‘further continues
its movement, the guiding cylinder turns until
the guiding surface ‘60 of the guiding cylinder reg
isters with the guiding surface '02 of the handle
shank. During this rotatory movement the guid
ing cylinder takes along the locking cylinder by
means of the projection 10 hearing against the
surface 13 of the said locking cylinder.
This
‘brings the blocking member It rigidly connected
with the locking cylinder, out of the recess 15 of
the bush '!0 and thus out of its blocking position.
Thereupon, compression spring 89‘ will project
the door handle and the handle shank until the
blocking member 74 has arrived in front of the
recess 15, and spring 80 has urged the blocking
45 member into its blocking position (Fig. 16).
On account of the clearance provided for, this
movement of the locking cylinder is not trans
mitted to the guiding cylinder. The push button
now being released returns into its initial position under the in?uence of the spring 8| while
the guiding member slides in guiding slots which
are at ?rst formed by the guiding surfaces 62 and
'50 on the one hand and 03 on the other hand and
then by the helical slots 85 on the one hand and.
56 on the other hand.
Instead of being operated by a pressure from
the outside, the push button may also be actuated
by pulling the draw bar 88. The door handle
may be locked in its retracted position by means
60 of the lock 86 the tongue 81 of which prevents
the movement of the handle when engaging with
the push button.
The Figs. 18 to 21 and 22 to 25 show special
embodiments requiring little space.
65
:5
In Figs. 18-21 numeral 30! designates a door
‘handle, 302 an escutcheon, 303 a handle shank,
304 a spindle, 305 a fastening screw, and 306 sup
porting screws. A coupling sleeve 30'! has recesses
303 and 309 which connected by the slot 3|0 form
70 a Z-shaped slot.
A notch in the recess 300 is
designated by 3 H and the depth of the notch by
333. The coupling sleeve 30? has also a longi
tudinal slot M2 and a square end portion 3| 3.
A cylinder lock designed as a push button is desig
75 nated by CH5 and provided with a collar 335 and
through the handle shank fastened internally to
the door handle to the coupling sleeve 30'! by 225
means of the coupling piece 324 extending into
the longitudinal slot 312 of the coupling sleeve.
The square end portion 313 of the coupling sleeve
30'! is inserted into roll-back 134 of the lock
proper and thus actuates the latch bolt (not 130
shown). The door handle can be moved inwards
by a pressure exerted on the push button 3l'5.
This causes guiding screw 319 to slide within
the axial portion 310 of the angular slot of the
cylinder lock sleeve 3!? and thus to guide the 35
push button axially. The cylinder lock sleeve may
be rigidly fastened in any suitable Way to the
handle shank. The extension 320 connected with
the cylinder lock 315 by the bolt 32! partakes of
this axial movement. Thereby, spring lever arm ‘at
33! resting in the recess 323 of the extension, is
rocked about the spindle 304 which is stationary
within the handle shank 303 and tensions arm
332 of the lever spring 330. Arm 332 is con‘nected to the blocking member 321 by its end
engaging with the hole 329 (Fig. 20) of the block
ing member 321’. Under the resilient action of
the arm 332, the blocking member swings about
its round head 32%? lodged Within the recess 326
of the handle shank so that the other end of the .
blocking member is urged out of the recess 308
(Fig. '19) of the coupling sleeve and thus out of
its blocking position. When the pressure on the
push button continues, the latter is caused to
bear with its collar 335 against the handle shank
so as to take along the same together with the
door handle, while the end of the blocking member
slides in the slot 3l0 of the coupling sleeve 30‘!
until it has arrived in front of the recess 309 of
the same. In this instant the end of the blocking 50
member is urged into recess 309 of the coupling
sleeve, under the continued spring action of arm
332 of the lever spring 330. When the push but
ton is released thereafter, the end of the block
ing member will be urged into the notch 3“ of 05
the coupling sleeve, by the pressure of the spring
333 acting through the supporting screws 306 on
the handle shank 303, a small clearance of the
blocking member in the recesses 325 and 326 of
the handle shank permitting such movement.
In this position of the blocking member as shown
in Fig. 19 by dot and dash lines, the door handle
3M together with the handle shank 303 is blocked
with the coupling sleeve 30?. As long as the
push button is depressed the ?nger pressure 75
6
2,120,647
overcomes the force of spring 334 acting on the
push button through the extension 32!]. When
latter’s operative position as shown in Fig. 23,
entirely into the interior of ‘the handle shank.
the push button is released, spring 334 tends to
When the pressure on the push button continues,
the collar 335 of the same is caused to bear
against the handle shank and to move it into the
interior of the coupling sleeve 360 until the block
ing member 346 has arrived in front of the recess
343 of the coupling sleeve (Fig. 24). By a fur
ther pressure of the lever arm 3732 the blocking
member is urged into the recess 343. When the 10
push button now is released, the handle shank
is pushed back under the pressure of the spring
push lever arm 33! outward so that the resilient
lever arm 332 is tensioned in the direction of the
arrow A (Fig. 19). Notch 3! ! prevents the block
ing member from leaving recess 309 under the
action of said spring tension. Now, in order to
project the handle, pressure is to be exerted
against the door handle 3!]! proper until the
handle shaft and the blocking member axially
coupled with the same have been displaced in
wards through a distance corresponding to the
depth 335 of the notch. Thereafter, the block
15 ing member subject, as above shown, to the action
of the lever spring will swing about the round
head 323 in the direction A (see Fig. 20) and its
332 as far as the neck 344 of the blocking mem
ber permits when engaging with the notch 345 of
the recess 343. Thus the handle shank is blocked 15
in its retracted or inoperative position (Fig. 24).
end will be removed from recess 309 of the cou
The door handle can be projected in the same
manner as in the arrangement described with ref
pling sleeve 38‘! (Fig. 19) and thus from the
erence to Figs. 18 to 21, viz., by a pressure exert
20 position in which it blocks the retracted handle.
ed on the door handle.
Thereupon, handle shank 333 with the door han
dle 3! will be projected, under the action of
the compression spring 333 until the end of the
blocking member sliding in the slot 3"} has been
25 brought in front of recess 308, and entered the
latter under the continued pressure of the resili
ent arm 332, thereby blocking the handle in its
member has left notch 345 under such pressure,
spring arm 332 tensioned' by the action of the
projected position (Fig. 18).
Instead of pressing
the push button, draw bar 322 connected to exten
30 sion 323 may be pulled from the inside of the car.
The handle may be locked in its inoperative posi
tion by the insertion of the key in the cylinder
look, so that the tumblers 346 are urged out of
the slots 33? of the cylinder lock sleeve 3!'!. A
35 subsequent angular displacement of the cylinder
lock urges the guiding screw 3l3 (Fig. 21) into
portion 338 of the angular slot provided for in
the cylinder lock sleeve, where screw 3! Sprevents
any further axial movement of the cylinder lock
40 serving as a push button. When the cylinder
lock is being turned, it turns about the thread of
portion 32! of the extension, since portion 32! is
45
As soon as the blocking
spring 334 will push the blocking member in
the direction of the arrow C back into the in
terior of the handle shank 3!]3 whereupon spring 26
333 will project the handle until the blocking
member 345 has arrived in front of the recess
34'! and has been urged by spring lever arm 332
into its recess and thus into its position for
blocking the projected handle. The door han 30
dle may be locked in its retracted position in the
same manner as in the arrangement shown in
Figs. 18 to 21. When the handle is operated the
coupling sleeve 30'! will turn in the bearing bush
353 during which movement it is secured by the 86
pin 355 sliding in the slot 354, against an axial
displacement.
The design of the door lock as described by
way of example can be executed in various ways
and also_ adapted to swingable and screwable 40
handles without leaving the scope of the inven
tion.
In many instances, the means for operating the
not screwed in sufficiently far to prevent a certain
rate of relative rotation.
blocking devices may be advantageously disposed
In the Figs. 22 to 25, numeral 339 designates
an extension for the push button, 340 a spindle,
on the walls of the door and outside the lock 46
described.
and 34! a recess in the cylinder lock sleeve 352.
In the handle shank is lodged a sleeve 342. Nu
meral 343 designates a recess in the coupling
50 sleeve, of shouldered shape and provided with a
notch 345. A blocking member is designated by
346 and provided at its end with a shoulder 344.
A further recess in the coupling sleeve is desig
nated by 341.
The Figs. 22 to 25 further show a bearing bush
55
353 made integral with the escutcheon 302. This
bush is provided with a slot 354 into which ex
tends a pin 355 fastened to the coupling sleeve.
All other parts are designated by the same nu
60 merals as in Figs. 18 to‘21.
The operation of the arrangement shown in
Figs. 22 to 25 diifers from that shown in Figs. 18
to 21 only inasmuch as the spindle of the lever
spring 33 mounted within the extension 339 will
65 be relatively displaced with respect to the han
dle shank and the cylinder lock sleeve 352 re
spectively when pressure is exerted on push but
ton 3! 5. Thereby, arm 33! of the lever spring
333 engaging recess 34! of the cylinder lock
70 sleeve will be swung outwards relatively with re
spect to the spindle 34!] so that the spring 332
What I claim as new, is:-—
l. A lock comprising a handle with a handle
shank, a roll-back for actuating a latch bolt, a
sleeve housing the said handle shank and. secured 50
against longitudinal displacement, in which
sleeve the handle shank is axially displaceable
into an operative position and from the latter to~
wards the door wall into an inoperative position,
means adapted to prevent the handle from being 65
actuated when the handle is in its inoperative
position, means adapted to insure the connection
oflthe handle with the roll-back, means adapted
to automatically bring the handle to its opera
tive position, means adapted to automatically
block the said handle in its operative and inop
erative positions, means operable from the out
side for releasing the blocking means, means for
actuating said releasing means from the inside
when the handle is in its operative position, a 65
locking device adapted to lock the door handle
from the outside in its inoperative position by
means of a key, means for pulling the handle
from the inside into its inoperative position,
means adapted to cause the pulling-in device to
collapse so as to require little space, means
is tensioned. This spring engages the blocking I adapted to automatically actuate the pulling-in
member 346 which is slidably lodged in sleeve 342. device when the door is being shut from the in
The tension of spring 332 urges member 346 from side, means adapted to prevent the movement of
75 its position in which it blocks the handle in the the door handle when being pushed inwards from 75
‘2,120,647
being transmitted to the members mounted on
the inside of the door.
‘
2. A door lock comprising a handlewith a han
dle shank, a roll-back for actuating a latch bolt,
a sleeve secured against longitudinal displace
ment and housing the said handle shank, means
adapted to prevent the said handle from being
actuated when the handle is in an inoperative po
sition, resilient means adapted to automatically
10 move the ‘handle into an operative position,
means adapted to automatically block the said
handle in its operative and inoperative positions,
releasing means by which the blocking means can
be released from the outside, means by which said
15 releasing means can be actuated from the inside,
a locking device adapted to lock the handle in
its inoperative position from the inside, a pull
ing—in device adapted to pull the handle into its
inoperative position from the inside, a driver bar
20 insuring the connection of the handle with the
roll-back and which is a part of the pulling-in
device, means adapted to cause the pulling-in de
vice to collapse so as to require littlespace, means
adapted to automatically actuate the pulling-in
25 device when the door is being shut from the in
side, and means adapted to prevent the move
ment of the door handle when being pushed in
wards from the outside, from being transmitted to
30
the members mounted on the inside of the door. 1
3. A door lock comprising a handle with a
handle ‘shank, a roll-back for actuating a latch
bolt, a sleeve secured against longitudinal dis~
placement and housing the said handle shank,
means adapted‘ to prevent the handle ‘from being
35 actuated when the handle is in an inoperative
7
leasing means, and comprising a movable handle
member on the inside of the door adapted'to shut
the door whereby when the door is being shut
from the inside through the agency of said mov
able handle member, said releasing means may
be operated and said outside handle retracted,
and means adapted to prevent the movement of
the outside door handle when being‘ pushed in
wards from the ‘outside, from being transmitted
to the handle member on the inside of the door. 10
5'. A door lock comprising a handle with a
handle shank having an operative and an in
operative ‘position, a roll-back for actuating a
latch bolt, a sleeve secured against longitudinal
displacement and housing the handle shank, 15
means adapted to prevent the handle from being
actuated when ‘the handle is in its ‘inoperative
position, means adapted to insure the connection
of the handle with the said roll-back, resilient
means adapted to automatically move the handle 20
into» its operative position, means adapted to
automatically block the handle in its operative
and inoperative positions, an actuating device
adapted ‘to control the last said means by its axial
displacement within the handle shank, means by 25
which this axial displacement is converted‘ into
a displacement transverse thereto of the means
which block the handle shank in its operative
and inoperative positions.
6. A door lock comprising a handle with a 30
handle shank having an operative and an ,in
operative position, a roll-back for actuating a
latch bolt, sleeve secured against longitudinal
displacement and housing the said handle shank,
means- adapted to ‘prevent the handle from be
position, means adapted to ensure the connection
ing?actuated when the‘ handle is‘ in its inoperative
of the handle with the said roll-back, resilient
means adapted to automatically move the handle
into an operative position, means adapted to
40 automatically block the, handle in its operative
and‘ inoperative positions, means by which the
blocking means can be released from the outside,
a locking device adapted to lock the handle in its
inoperative position‘ from the outside by means of
45 a key, a pulling-in device‘ adapted to pull the
handle into its inoperative position and to re
leasethe blocking means from the inside, means
position, means adapted to insure the connection
of the handle with the said roll-back, resilient
means adapted to automatically move the handle
into its operative position, means adapted to auto
matically block the handle in its operative and
inoperative positions, an actuating device adapted
to’ control the ‘last said means by its axial dis
placement within the handle shank, resilient
means by which this axial displacement is con
verted‘ into a displacement transverse thereto of
the means which block the handle shank in its
adapted to cause the pulling-in device to collapse
operative and inoperative positions.
so as to require little space, means adapted to
"7’. A door lock comprising a handle with a
handle shank, a roll-back for actuating a latch
50 automatically actuate the pulling~in device when
the door is being shut from the inside, and means
adapted to prevent the movement of the door
handle when being pushed inwards from the out
bolt, a sleeve secured against longitudinal dis
placement and housing the said handle shank,
means adapted to prevent the handle from being
side, from being transmitted to the members
actuated when the handle is in an inoperative
position, means adapted to insure the connection
of the handle with the said roll-back, resilient
means adapted to automatically move the handle
into an operative position, means adapted to
block the handle in its operative and inoperative
positions, an actuating device adapted to control
the last said means, a locking device mounted
in the handle and adapted to lock the said actuat
55 mounted on the inside of the door.
' 4. ‘A door lock comprising an outside handle
with a handle shank, a roll-back for actuating a
latch bolt, a sleeve secured against longitudinal
displacement and housing the said handle shank,
means adapted to prevent the handle from being
actuated when the handle is in an inoperative
position, means adapted to insure the connection
of the handle with the said roll-back, resilient
means adapted to automatically move the handle
65 into an operative position, means adapted to
automatically block the handle in its operative
and inoperative positions, releasing means by
which the blocking means can be released from
ing device in an inoperative position.
8. A door lock comprising a handle member
having an operative and an inoperative position, 65
a rclbback for actuating a latch bolt, means
connecting said handle member with said roll
back for actuating the latter by means of the
the outside, a locking device adapted to lock the
handle in its inoperative position from the inside,
former, means for preventing said handle mem
a pulling-in device adapted to pull the handle
inoperative position, resilient means adapted; to.
automatically move said handle into‘ its opera
into its inoperative position from the inside,
means adapted to cause the pulling-in device to
collapse so as to require little space, said pulling
75 in' device being operatively connected to said re
ber from ‘being actuated when the handle is in its 70
tivc position, blocking means movable with said
handle memberand relatively thereto and having
two positions for automatically blocking the 75
8
2,120,647
handle member in its inoperative and in its opera
tive positions respectively, an actuating member
carried by said handle member and being mov~
able relatively thereto, and an oscillatable mem
ber within said handle member and connected to
said blocking member, said oscillatable member
being in engagement with said handle member
and with said actuating member so as to swing
in one direction and to retract said blocking
10 member from one blocking position upon an in
ward movement of said actuating member rela
tive to said handle member, and to swing in the
other direction and to retract said blocking mem
ber from its other. blocking position upon an
inward movement of said handle member rela
tive to said actuating member.
9. A door lock comprising a handle having an
operative and an inoperative position, a roll
back for actuating a latch bolt, means connect
ing said handle with said roll-back for actuating
the latter by means of the former, means for
preventing said handle from being actuated when
the handle is in its inoperative position, resilient
means adapted to automatically move said han
dle into its operative position, blocking means
movable with said handle and relatively thereto
and having two positions for automatically
blocking the handle in its inoperative and in its
operative positions respectively, a push button
carried by said handle and being movable rela
tively thereto, and an oscillatable member with_
in said handle and connected to said blocking
member, said oscillatable member being in en
gagement with said handle and with said push
button so as to swing in one direction and to
retract said blocking member from one blocking
position upon an inward movement of the push
button relative to the handle, and to swing in the
opposite direction and to retract said blocking
40 member from its other blocking position upon an
inward movement of said handle relatively to
said push button.
10. A door lock comprising a handle member
45
having an operative and an inoperative position, i
roll-back for actuating a latch bolt, means con
necting said handle member with said roll-back
for actuating the latter by means of the former,
means for preventing said handle member from
being actuated when the handle is in its inoper
50 ative position, resilient means adapted to auto
matically move said handle into its operative
position, blocking means movable with said han
dle member and relative thereto for automati
cally blocking it in its inoperative position, an ac
55 tuating member carried by said handle member,
one of said members being movable relatively to
the other one in the direction in which said han
dle member moves when being shifted from one
of its said positions to the other one, means in
60 engagement with said actuating member and
said blocking means for retracting said blocking
means from its blocking position upon a relative
movement of said members and an elongated
member connected to said actuating member for
ber from being actuated when the handle is in
its inoperative position, resilient means adapted
to automatically move said handle into its oper
ative position, blocking means movable with said
handle member and relatively thereto and hav
ing two positions for automatically blocking it in
its operative and in its inoperative positions, an
actuating member carried by said handle mem
ber‘, and'being movable relatively thereto, and
an oscillatable member within said handle mem
10
ber and connected to said blocking member, said
oscillatable member being in engagement with
said handle member and with said actuating
member so as to swing in one direction and to
retract said blocking member from one blocking
position upon an inward movement of said actu
ating member relative to said handle member,
and to swing in the other direction and to re
tract said blocking member from its other block
ing position upon an inward movement of said
handle member relative to said actuating mem
ber and key operated means for preventing said
handle member from being projected from its
inoperative position upon actuation of said actu
ating member.
12. A door lock comprising a handle member
having an operative and an inoperative position,
a roll-back for actuating a latch bolt, means con
necting said handle member with said roll-back
for actuating the latter by means of the former, -
means for preventing said handle member from
being actuated when the handle is in its inopera
tive position, resilient means adapted to auto
matically move said handle into its operative po
sition, blocking means movable with said handle
member for automatically blocking it in its oper
ative and in its inoperative positions, a key
operated cylinder lock in said handle member,
said cylinder lock forming a push button and
being movable in the direction of its axis rela
tively to said handle member, an oscillatable
member within said handle member and con
nected to said blocking means, said oscillatable
member being in engagement with said handle
member and with said cylinder look so as to
swing in one direction and to retract said block
ing member from one blocking position upon an
inward axial movement of said cylinder lock rel
ative to said handle member, and to swing in
the other direction and to retract said blocking
member from its other blocking position upon
an inward movement of said handle member rel
ative to said cylinder lock, and means in engage
ment with said cylinder lock for preventing an
alteration of its axial position in relation to said 55
handle member when turned by means of its key.
13. A door lock comprising a handle with a
shank having an operative and an inoperative
position, a roll~back for actuating a latch. bolt,
means connecting said handle with said roll~ 60
back for actuating the latter by means of the
former, means for preventing said handle from
being actuated. when the handle is in its inop
erative position, resilient means adapted to au~
65 operating said actuating member, said elongated ‘ tomatically move said handle into its operative 65
member being arranged interiorly of said handle
member and said roll-back and protruding from
the side of the lock remote from said handle
member.
11. A door lock comprising a handle member
70
having an operative and an inoperative position,
position, blocking means movable with and rela
tively to said shank and having two positions
for automatically blocking said handle in its on
erative and its inoperative positions respectively,
a key-operated cylinder lock including tumblers 70
within said shank, said cylinder lock being mov
a roll-back for actuating a latch bolt, means
able in the direction of its axis relatively to said
connecting said handle member with said roll
back for actuating the latter by means of the
75 former, means for preventing said handle mem
handle, said tumblers being adapted to engage
said shank so as to guide said lock in axial di
rection, an oscillatable member within said shank 75
2,120,647
and connected to said blocking member, said os
cillatable member being in operative engagement
with said shank and with said cylinder look so
as to swing in one direction and to retract said
blocking member from one blocking position upon
an axial movement of said cylinder lock relative
to said shank, and. to swing in the opposite di
rection and to retract said blocking member
from its other blocking position upon an axial
10 movement of said shank relative to said cylinder
lock, and means in engagement with said cylin
der lock and said shank for preventing relative
axial movement thereof when the cylinder lock
is turned by means of its key.
14. A door look as claimed in claim 13 com
prising an elongated member connected to said
cylinder lock and protruding from the side of
the door lock opposite said handle for moving
said cylinder lock in axial direction relatively
20 to said handle.
15. A door look as claimed in claim 9 compris
ing a rod connected to said push button and
protruding from the side of the door lock oppo
site said handle for pulling said push button,
25 and means at the protruding end of said rod
for arresting it to prevent a movement of said
push button relative to said handle.
16. In a door lock of the character described,
a handle with a shank being retractable from
30 operative into inoperative position, a spring for
projecting the handle shank, a push button in
said shank, said push button having a projec
tion and being accessible from the outside of said
handle, means for guiding said push button axi
ally within said shank, a blocking member for
blocking said handle in its operative and its in
operative positions, said blocking member being
oscillatable about and movable in the direction
of the axis of said shank, and means for trans
40 forming an axial movement of said push button
relative to said shank into a turning movement
of said blocking member.
17. In a door lock of the character described,
a handle with a shank being retractable from
operative into inoperative position, a spring for
projecting the handle shank, a push button in
said shank, said push button having a projection
and being accessible from the outside of said han
dle, means for guiding said push button axially
within. said shank, a blocking member including
a blocking projection for blocking said handle in
its operative and its inoperative positions, said
blocking member being oscillatable about and
movable in the direction of the axis of the shank
55 and having inclined surfaces, and a sleeve sta
tionary in axial direction and encompassing said
handle shank and having a slot into which said
blocking projection engages, and said push but
ton projection being adapted to engage the in
60 clined surfaces.
18. A device as claimed in claim 17 in which
the slot of the sleeve is Z-shaped, and springs
therein tending to urge the blocking member into
the respective arms of the‘slot in front of which
it arrives.
19. A device as claimed in claim 17 in which
a draw bar is connected with the push button so
as to freely turn in relation thereto, said draw
bar protruding from the door lock at the side
70 remote from said handle, said push button and
said handle having surfaces adapted to abut
9
each other in axial direction, and means at the
end of the draw bar for arresting it in order
to hold said push button and said handle in re
tracted position.
20. A device as claimed in claim 9 in which
said push button is formed as a cylinder lock
having tumblers, said tumblers being adapted to
engage a slot of said shank for axially guiding
said cylinder lock therein, and in which a ‘pro
jection is provided at the side of the cylinder lock,
said projection engaging an angular slot of said
shank so as to prevent an axial movement of said
cylinder lock relative to said shank when the
projection is in the transverse arm of the angular
slot, and to permit an axial movement when the 15
projection is in the longitudinal arm of the slot.
21. In a door lock of the character described,
a handle with a shank being retractable from
operative into inoperative position, a spring for
projecting the handle, a push button in said
shank being guided therein in axial direction and
being accessible from the outside of said handle,
a blocking member for blocking said handle in
its operative and its inoperative positions, said
blocking member being movable in a plane at
right angles to the axis of said shank, a bell crank
lever spring pivoted in said shank, one arm of
said lever spring being operatively connected to
said push button, the other arm of said lever
spring engaging said blocking member, whereby 30
said lever spring is rocked to retract the blocking
member from its blocking position of the opera
tive handle upon an inward movement of said
push button relatively to the shank, and ten
sioned to return the blocking member upon a 35
relative movement of the push button in the
opposite direction.
22. A device as claimed in claim 21 further
comprising a sleeve connected for rotation with
said handle shank, said shank being slidable 40
therein, said blocking member engaging a Z
shaped slot of said sleeve, a shoulder of said
sleeve de?ning a notch of one of the slot arms
and being adapted to hold said blocking member
therein in its blocking position of the inopera 45
tive handle, and a second spring tending to move
said push button outwards in relation to said
handle.
23. In a door lock of the character described,
a handle with a shank being retractable from
operative into inoperative position, a spring for
projecting the handle, a push button in said
shank being guided therein in axial direction and
being accessible from the outside of said handle,
a blocking member for blocking said handle in its 55
operative and its inoperative positions, said block
ing member being movable in a plane at right
angles, to the axis of said shank, a pivot pin
connected for movement with said push button,
a bell crank lever spring mounted on said pivot 60
pin, one arm of said lever spring being operatively
connected to said shank, the other arm of said
lever spring engaging said blocking member,
whereby said lever spring is rocked to retract the
blocking member from its position .in which it 65
blocks the handle in the latter’s operative position
upon an inward movement of said push button
relatively to the shank, and tensioned to return
the blocking member upon an inward movement
of the shank relatively to the push button.
MAX PAPST.
70
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