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Патент USA US3027194

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March 27, 1962
A. R. DE vlTo
3,027,184
DOOR CONTROL MECHANISM
Filed Dec. 5, 1959
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March 27, 1962
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INVgIiNTyOR.
Arvaao R.
BY
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?TTOR/VEYS
March 27, 1962
A, R, DE vlTo
3,027,184
DOOR CONTROL MECHANISM
Filed Dec. 3, 1959
6 Sheets-Sheet 6
INVENTOR.
Alma-�A?. dew 0
//
Arromvsys
United States Patent G??ce
3,027,184
Patented Mar. 27, 1962
1
2
3,027,184
but showing the relationship of the parts for the door
unlocked and door-unlatched condition of the mechanism;
DOOR CONTROL MECHANISM
Angelo R. de Vito, Rockford, 11]., assignor to
Lisle W. Menzimer, trustee, Rockford, Ill.
Filed Dec. 3, 1959, Ser. No. 857,076
20 Qlaims. (Cl. 292-216)
FIG. 7 is a vertical axial section taken on section line
7?7 of FIGS. 6 and 8;
FIG. 8 is a sectional plan view taken through the latch
device at the location indicated by section line 3-8 of
FIGS. 5 and 7 and showing the parts in the door-unlocked
This invention relates to door control mechanism of
the co-operating keeper and pivoted latch type and pro
position;
vides a novel construction of a very practical form for
door control mechanism of this kind and by reason of
larger scale and of a diagrammatic form and illustrating
the action of the over-center spring of the locking lever;
which the mechanism is especially suitable for vehicle
door use.
FIGS. 9 and 10 are fragmentary elevational views on a
FIGS. 11 to 14 inclusive are of a modi?ed form of door
control mechanism, FIG. 11 being a fragmentary trans
More particularly, the invention relates to door con
trol mechanism intended for vehicle doors and having 15 verse vertical section similar to FIG. 5 but taken on sec
tion line 11?11 of FIG. 13 and showing the latch device
detent means for releasably retaining the latch member
in a door-latched and door-locked condition;
in its door-latched position and also having manually
FIG. 12 is a fragmentry transverse vertical section like
operable actuating means in the form of either an out
that of FIG. 11 but showing the latch device in a safety
side actuating means or an inside actuating means, or
latched condition;
both, for the release actuation of the detent means and
FIG. 13 is a vertical section taken on section line
wherein the manual actuating means has an idle or
13-13 of FIGS. 11 and 14; and
free-wheeling movement when the mechanism is in a
door-locked condition.
An object of this invention is to provide novel door
control mechanism of the kind referred to above and hav
ing manually operable locking means and a control means
actuatable by locking means to effective and ineffec
tive positions for controlling the release actuation of the
detent means by the manual actuating means for the
latter.
Another object is to provide novel door control mech
anism of the character mentioned above wherein por
tions of the detent means and detent release means com
prise a swingable control arm means and the locking
means comprises a shiftable locking member, and where
in the control means is connected with such locking mem
her and comprises ?nger means shiftabl-e to effective and
ineffective positions by movement transversely of the
control arm means.
A further object is to provide novel door control mech
anism having the structural characteristics and the free
wheeling operating characteristic referred to above, and
which can be economically produced and installed and
wherein the locking member cooperates with the con
trol arm means to prevent any unintentional release actu
ation of the detent means when the detent release means
is in its free-wheeling condition corresponding with the
door-locked condition of the mechanism.
Other objects and advantages of this invention will be
apparent in the following detailed description and in the
accompanying drawings forming a part of this speci?ca
tion and in which
FIG. 1 is a partial side elevation of a vehicle body
showing the control mechanism of this invention applied
to one of the doors thereof;
FIG. 2 is a partial elevational view of the upright edge
wall of the door having the latch device of the control
mechanism mounted thereon;
FIG. 14 is a sectional plan view taken on section line .
14~14 of FIGS. 11 and 13 and showing the parts in the
door-locked position.
In the accompanying drawings the door control mech~
anism 10 is shown applied to co-operating door and door
frame members 11 and 12 of a vehicle body 13 and com
prises a keeper 14 mounted on the doorframe and a latch
device 15 co-operating therewith and mounted on the
door.
The door 11 can be of any conventional form and is
here shown as being a swingable door connected with the
vehicle body 13 as by the usual vertical-axis hinge means
and having outer and inner side walls 17 and 18 and a
chamber or space 19? between such walls. The door 11
has a free edge portion 20 provided with an upright edge
wall 21 which is presented toward the pillar portion 22 of
the doorframe 13 when the door is in its closed position.
The doorframe 12 is here represented by the upright
40
pillar portion 22 which has an edge wall 23 lying in an
opposite relation to the edge wall 21 of the door when
the door is in its closed position so that the opposed up
right edge walls cooperate to form a cleavage crevice 24
45 and lie on opposite sides of an upright cleavage plane ex
tending transversely of the vehicle. The edge wall 23 is
provided with a rearwardly offset recess or indentation
25 to accommodate the keeper 14.
The latch device 15 will be described in detail here
50 inafter but, at this point, it is explained that the latch
device is mounted on the edge wall 21 of the door 11 and
includes a pivot shaft 27 projecting through an opening
28 of such wall and a latch member 29? pivotally support
ed by such shaft. The latch device 15 also includes a
55 roller 30 pivotally supported by the shaft 27 and mounted
thereon immediately adjacent the latch member 29 and
in which position the roller is retained by a projecting
bracket arm ?31 having the outer end of the shaft 27 sup
ported thereon. The latch member 29 is here shown as
FIG. 3 is a partial transverse vertical section taken
having a body portion formed integral with the shaft 27
approximately as indicated by section line 3-3 of FIG. 60 and as also having a plurality of teeth 32 formed on such
1 and showing the keeper and the upright edge wall por
body portion, in this case two such teeth 32a and 32b.
tion of the doorframe mainly in elevation;
The keeper 14 can be of any appropriate shape and
?FIG. 4 is a vertical axial section taken through the
construction for co-operation with the latch member 29
control mechanism as indicated by section line 4??4 of
and the roller 30? and is here shown as being in the form
FIGS. 2, 3 and 5 and showing the relationship of the 65 of a hollow body 34 having a recess 35 in the rear side
parts when the door is in a latched and locked condition;
thereof and presented toward the edge wall 23 of the
FIG. 5 is fragentary transverse vertical section of the
doorframe 12 to which the keeper is secured by suit?
latch device taken on section 5-?5 of FIGS. 4 and 7
able
attaching screws 36. The keeper body 34 is pro
with the parts again shown in the door-latched and door
70 vided with a front wall 37 having a notch 38 therein to
locked position;
accommodate the shaft 27 when the door is moved to its
FIG. 6 is a fragmentary section like that of FIG. 5
closed position. The keeper body 34 is also provided,
3,027,184
3
which the attaching screws 36 extend.
The keeper body 34 also has a peripheral side or edge
ing a door-holding or door-supporting co-operation there
between and for also urging the engaged tooth 32a of the
wall 39 connected with the front wall 37 and extending
rearwardly therefrom. The wall 39 extends around the
keeper body for the major portion of the perimeter there
of but is interrupted by an access opening 43 located on
the side of the keeper facing outwardly of the vehicle and
which access opening leads into, and communicates with,
the keeper recess 35 as well as with the notch 33.
The keeper recess 35 is of a size and shape to freely
receive the roller 30 when the door is moved to its closed
4
located in the pocket 52 and is engageable by the upper
peripheral portion or segment of the roller 36 for produc
with upper and lower lug projections 4% and 41 through
latch member downwardly in the pocket 44 into seating
engagement with the wall of the latter.
The wedge member 53 is swingably supported in the
pocket 52 by a pivot pin 54 mounted on the front wall
37 and extending rearwardly therefrom. A wire spring
10 55 also mounted on the pivot pin 54 is effective against
the Wedge member 53 for swinging the same in a direc
tion to press the thrust portion 53a thereof against the
periphery of the roller 30.
The latch device 15 comprises a support or base 57
position and the notch 38 is of a size and shape to receive
the latch member 29. The portion of the front wall 37
having plate and ?ange portions 58 and 59 disposed in a
which is located below the notch 38 is provided with a
substantially right-angular relation to each other. The
locking pocket or tooth recess 44 which communicates
plate
portion 58 is adapted to be attached ?to the edge
with the notch and is of a size and shape to mate with
wall 211 of the door 11 as by means of suitable screws 60
and receive one of the teeth 32 of the latch member. The
for mounting the latch device 15 on the door. The plate
pocket 44 is centered on a substantially vertical center
portion 58 is provided with a sleeved opening having a
line 45 which extends through the pivot axis 4-6 of the
bushing
61 mounted therein for pivotally supporting the
shaft 27 when the door is closed and the latch member
shaft 27.
29 is in a door-latched position in the keeper 14 in which
The latch device 15 also comprises a ratchet 63 ?xed
position the latch member is shown in full lines in FIG. 3
on
the pivot shaft 27 and having teeth 63*?, 63b and 63�
with the tooth 328- as the pocket-engaged tooth.
The portion of the keeper wall 37 lying on the out 25 with which a detent means 64 co-operates for holding the
latch member 29 in the different positions to which it is
wardly facing side of the keeper at a point below the
notch 38 forms a striker means 48 against which the next
adjacent tooth 32b of the latch member engages as the
door approaches its closed position. This engagement
causes the tooth 32a to be swung into the pocket 44 as
the door 11 moves to its fully closed and door-latched
movable. The detent means 64 comprises a detent lever
65 and an actuator lever or detent release lever 66. The
levers 65 and 66 are swingably supported by a common
pivot pin 67 mounted in the plate portion 53 of the sup
port 57.
The detent lever 65 is in the form of a bell crank lever
position shown in FIGS. 3 and 4.
comprising a detent arm 68 and a control arm 69, the
The roller 30 is of a diameter substantially greater than
detent arm having, on the free end thereof, a hook-shaped
the transverse dimension of the notch 38 so that, when
holding
portion 68a which is co-operable with the teeth
35
the door 11 is in its door-latched position, portions of the
of the ratchet member 63. The tooth 63a is engageable
roller will lie behind the front wall 37 and will be en
by the holding portion 685 when the latch member 29 is
gageable with the latter at points located on opposite sides
of the notch to thereby prevent spreading apart of the
door and doorfrarne in the fore-and-aft direction in the
event that the vehicle is involved in a collision.
When
the door is in its door-latched position the lower portion
of the roller 30 is spaced from the edge wall 39 of the
keeper body, as shown in FIGS. 3 and 4, so that the
tooth 328- of the latch member 29 will seat in the pocket
44 to support the door in an antirattle relation to the
doorframe 12.
i
The portion of the edge wall 39 of the keeper body
lying at the lower edge of the access opening 43 provides
a lower guide means 50 which is engageable by the roller
30 to facilitate the movement of the latch member 29
into the keeper 14 to its door-latched position therein.
A portion of the edge wall 39 of the keeper which is
located on the upper side of the access opening 43 forms
a similar upper guide means 51 which will be engageable
by the roller 30 in the event that the keeper and latch
member are in a relatively misaligned relation.
In FIG. 3 of the drawings the phantom-line showings
of the roller 30 represent misaligned positions 309' and
3011 thereof. These phantom-line positions 30a and 30b
are somewhat exaggerated misalignment positions for the
roller which would cause the same to engage the lower
in its door-latched position and such engagement of this
tooth by the holding portion will retain the latch member
in the door-latched position.
When the tooth 63b of the ratchet member 63 is in
engagement with the holding portion 68a, the latch ment?r
ber 29 will be retained in its safety-latched position in
which the tooth 32a of the latch member extends only
part-way into the locking pocket 44. This safety-latched
position of the latch member is the phantom-line position
29b thereof shown in FIG. 3. When the tooth 63� of the
ratchet member 63 is in engagement with the holding
portion 68*?, as shown in FIG. 6 of the drawings, the latch
member 29 will be in its door-unlatched position.
I
The detent release lever 66 is also in the form of a bell
crank lever having an actuator arm 71 and a control arm
72. The actuator arm 71 has a contact portion or ?ange
'71? which is engageable by the stem 73 of a push but-1
ton 7-4 provided on the door 11 and forming an outside
control means for the door control mechanism 16. For?
a purpose to be explained hereinafter, the control arm 72
hes adjacent the control arm 69 of the detent lever 65
and extends in a substantially parallel relation thereto.
The ?ange 71a of the detent release lever 66 is of a
length so that the lower end thereof extends below the
axis of the pivot pin 67 to form a thrust portion 75 which
and upper guide elements 5%} and 51, respectively, and
overlaps and is engageable with the adjacent edge of the
thereby produce a corrective shifting of the door which
detent arm 68.
would enable the latch member and roller to readily
As an important part thereof the latch device 15 also
enter the keeper 14. The roller 30 will, of course, also 65
comprises a control member ?78 for establishing an oper
co-operate under similar circumstances with one or the
ative and releasable connection between the detent release
other of the guide elements 50 and 51 to facilitate move
lever 66 and the detent lever 65' so that the latter lever
ment of the latch member 29 out of the keeper recess 35
during opening movement of the door. The phantom
line position 30� represents the normal approach position
of the roller 30 and the normal approach position 29a of
the latch member, relative to the keeper 14.
The keeper body 34 is also provided with a pocket 52
which is located above the notch 33 and the recess 35 and
communicates with the latter. A. wedge member 53 is
will be actuatable to release the ratchet member 63 in
response to swinging of the release lever byt-he push
button 74. The control member 78 is here shown as.
being in the form of a T-shaped member or key having a
stem portion 78*? and a transverse bar portion 73b rigidly
connected with such stem portion. The ends of the bar
portion 73?? form oppositely extending ?ngers 79 and 8'?.
5
3,027,184
The latch device 15 also comprises a locking member
in the form of a lever 81 lying adjacent the ?ange portion
59 of the support 57 and swingably supported by a pivot
pin 82 mounted in such ?ange portion. The form of the
(5
position and the detent release lever 66 will then have an
idle or free-wheeling movement on the pivot pin 67 and
the detent lever 65 will remain in the position with the
holding portion 68st in engagement with the tooth 63a of
locking lever 81 and the manner of its cooperation with Ul the ratchet member 63 for retaining the latch member 29
the detent means 64 will ?be described in detail herein
in a door-latched and door-locked position. However,
after. The control member 78 is connected between the
when the locking lever 81 is in its unlocking position, the
detent means 64 and the locking lever 81 and, for this
finger '79 will be in its extended or effective position in
purpose, the detent lever 65 is provided with a support
which it will be engageable by the control arm 72 where
bracket 84 and the locking lever is provided with an 10 upon swinging movement imparted to the detent release
actuating bracket 85.
lever 66 by the push button 74 will cause a simultaneous
The support bracket 84 is an L-shaped member having
swinging of the detent lever 65 in a direction to cause
one end thereof attached to the control arm 69 as by a
the holding portion 68a thereof to release the ratchet
riveted connection 86 and whose other end forms a sup~
tooth 63a to permit the latch member 29 to move from its
port arm 84*? which is provided with an opening 87 and
door-latched position to its door-unlatched position.
whose free end extends into a slot 88 of the ?ange portion
The locking lever 81 is provided at the upper end
59. When the support bracket 84 is of this L-shaped
thereof with cam and shoulder portions 93 and 94 lying
form and is attached to the control arm 69 in the rela
above and below a notch 95 formed in the edge of this
tionship just described, it will be seen that the support
lever. The notch 95 is of a size and shape to receive the
arm 8451 will extend in a parallel relation to the free end
support arm 84a of the detent lever 65 when the locking
portion of the control arm 69 and will be spaced there
lever is swung to its locking position 819. When the
from so that the opening 87 will be in a substantially
locking lever is in such locking position, the shoulder
opposed and laterally aligned relation to a similar opening
portion 94 will be located immediately below the support
89 provided in this control arm.
arm 843 so as to be engageable by the latter as a blocking
The control member 78 is positioned relative to the .' means for preventing the downward swinging of the con
detent means 64 so that the stem portion 789 lies between
trol arm 69 which is necessary for disengagement of the
the support arm 84*? and the control arm 69, as shown in
holding portion 68a of the detent lever 65 from the tooth
FIG. 7, and the oppositely extending ?ngers 79 and 80
project through the openings 87 and 89 respectively. The
control member 78 is assembled in this relation to the
control arm 69 and the support arm 843 prior to the form
63a of the ratchet member 63.
?
Thus, when the locking lever 81 is in its locking posi
tion and the ?nger 79 of the control member 78 has been
retracted so that the swinging of the detent release lever
66 by the push button 74 will be only an idle or free
ing of the riveted connection 86. When the control
member is disposed in this relation, the stem 789 thereof
wheeling movement, the blocking shouider 94 will, at
extends in a depending relation and projects toward the
this time, be engageable by the support arm 84a to posi
pivot pin 82 on which the locking lever 81 is swingably 35 tively retain the control arm 69 against. any downward
mounted.
ratchet-releasing swinging movement. This blocking ac
The stem portion 7 8a of the control lever 78 is loosely
tion by the shoulder portion 94 of the locking lever thus
and slidably received in an opening 91 of the actuating
prevents any unintentional or accidental ratchet-releasing
bracket 85. This actuating bracket can, if desired, be a
actuation of the detent lever 65 by the idle or free-wheel
lug projection formed on the locking lever 81 but is
ing movement of the detent release lever 66 as the result
here shown as being a separate part lying alongside the
of the presence of dirt, rust, ice or other such foreign
locking lever and held thereagainst by the head 82a of
matter, between the levers 65 and 66 of the detent means.
the pivot pin 82. The actuating bracket 85 is also con?
The outside control means provided on the door 11
nected with the locking lever 81 so as to be swingable
comprises, in addition to the push button 74-, a key
therewith as by means of a lug portion 92 projecting into
actuatable conventional cylinder lock 97 having the usual
an opening of the locking lever.
noncircular spindle 98 extending therefrom and engaged
The aligned openings 87 and 89 of the detent means 64
in a noncircular opening of a locking ?nger 99 pivotally
are of a size in relation to the ?ngers 80 and 79 of the
mounted on the ?ange portion 59 of the support 57. The
control member 78 so that these ?ngers will be slidable
locking ?nger 99 has the ?ree end thereof received in a
in an endwise direction in these openings upon shifting of
C~shaped opening 180' of the locking lever 81 for co
the control member transversely of the detent means by
operative thrust engagement with cam portions ?191 and
the swinging of the locking lever 81. The ?nger 79 is of
102 provided on the locking lever on opposite sides of
a length so that when the locking lever 81 is swung to its
the
C-shaped opening 100. The G~shaped opening 100
unlocking position in which it is illustrated in full lines
and the associated cam portions ltll and 102 are formed
in FIG. 7, this ?nger will extend into the path of the 55 on the locking lever 81 so as to lie below the pivot pin 82,
swinging movement of the control arm 72 of the detent
release lever 66 as shown in FIG. 8. The plate portion
58 is provided with a clearance opening 98 into which the
free end of the ?nger 79 can project when it is in its
extended or effective position.
60
When the locking lever 81 is in its locking position 81*?,
the ?nger 79 is in a relatively retracted position which
permits an idle swinging of the control arm 72 Without
coming into engagement with this ?nger. However, when
the ?nger 79 is in the extended position mentioned just 65
above and shown in FIG. 8, it will be engageable by the
control arm 72 so that downward swinging imparted to
this control arm by the action of the push button 74
will cause a corresponding downward swinging of the con
trol arm 69 by which the holding portion 688' of the
detent lever 65 will be disengaged from the ratchet
member 63.
It will therefore be seen that whenever the locking
whereby swinging of the locking ?nger 99 into thrust en?
gagement with the cam portion 106' will move the locking
lever to its locking position and thrust engagement of the
locking ?nger with the cam portion 182 will swing the
locking lever to its unlocking position.
The latch device 15 is also provided with inside con
trol means comprising an unlocking lever 164 swingably
mounted on a pivot pin projection 105 of the ?ange por
tion 59 and a pushapull link 186 having a knob or the
like 107 located adjacent the garnish molding 108 of the
vehicle door 11. The unlocking lever 194 is connected
with an inside control handle of the vehicle door 11, as
by a link 109, and is swingable by the latter in a clock
wise direction on the pivot pin 105 to cooperate with the
cam portion 93 of the locking lever 81 for swinging the
latter to its unlocking position. The garnish molding
knob 167 is connected with the locking lever by the push
pull link 106 to enable the locking lever to be swung to
lever 81 is in its locking position 81a, the ?nger 79 of
and from its locking position by manual ?actuation of the
the control member 78 will be in its retracted or ineifective 75 knob.
3,027,184.
7
to an anchor member 112 which is ?xed on the shaft 2-7?
It is desirable that locking of the latch device 15,
either by manipulation of the key-actuated lock 97 or by
means of the garnish molding knob 107 of the inside
control means, be prevented whenever the door is in its
open position. As shown in FIGS. 6 and 7, the support
arm ?8421 lies opposite the shoulder 94 when the latch de
vice 15 is in its door-unlocked and door-unlatched condi
and 66 of the detent means 64.
ing position.
As another of the features of this invention, a single
spring means 111 is provided to serve the detent means
64 and the latch member 29. This spring means is here
shown as being a tension spring having the end 1*?1a
thereof attached to the thrust portion '75 of the detent
release lever 66 and having its opposite end 111b attached
tion and will then be engageable by this shoulder as the
and swingable thereby. When the spring 111 is thus con~
result of any attempt to lock the latching device, while it
nected between the thrust portion '75 and the anchor
member 112, it will continuously apply a clockwise rota 10 is in such unlocked and unlatched condition, and will
prevent the locking lever from swinging fully to its lock
tive force to the latch member 29? and to the levers 035
This action of the spring 111 on the lever 66 will im
part a return swinging movement thereto and, through
When such an attempt is made to lock the latch device
15 while the mechanism is in its door-unlatched condi?
the thrust action of the thrust portion 75 against the de~
tion, the swinging movement of the locking lever 81 will
leased by the holding portion 686?.
locking position with the support arm 84a engaged in
come to a stop with the shoulder 94 pressing against the
tent arm 68, will also urge the latter toward engagement
support arm 84*?. If the latch device 15 is allowed to
with the teeth of the [ratchet member 63. The pulling
remain in this condition there is a possibility that, upon
force of the spring 111 on the anchor member 112 will
slamming of the door to its closed position and the re?
likewise tend to cause clockwise rotation of the shaft 27
sulting lifting of the support arm 343 by the action of
for producing a throw-out action of the latch member 29' 20 the spring 111, the locking lever 31 may continue its
against the keeper 14- when the ratchet member 63 is re
movement toward its locking position and assume a full
The movement of the locking lever 81 to its locking
and unlocking positions is produced, in part, by an over?
center or snap-action type of spring 114 (see FIGS. 9
and 10) which is connected between this lever and the
flange portion 59. The spring 114 is here shown as
being a wire spring of a flat circular form having anchor
portions 115 and 116 formed by the ends of the spring
wire and which anchor portions extend in opposite direc
tions axially of the spring.
The anchor portion 115 is engaged in a hole 1117 pro
vided in the locking lever E?d1 and the anchor portion 116
is engaged in one end portion of a C-shaped opening 113
provided in the ?ange portion 59.
The ends of the C
the notch 95. Such a continued movement of the locking
lever 81 to its full locking position under the circum
stances explained just above would result in the vehicle
operator unintentionally locking himself out of the ve
hicle.
When the anchor portion 116 of the spring 114 is lo
30 cated in the anchor position 119 as shown in HQ. 9
of the drawings, the action of this spring will be to always
tend to swing the locking lever 81 toward its unlocking
position rather than toward its locking position upon
the occurrence of the above-described upward movement
of the support arm 84?� at a time when the shoulder 94
is pressing against the latter. That the spring 114 will
always tend to thus swing the locking lever 81 toward its
shaped opening 118 provide two different anchor loca
tions 119 and 120? on the ?ange portion 59 for the anchor
unlocking position under these circumstances and as the
portion 116 of the spring 114 and the action of this
result of the anchor portion 116 being engaged in the
spring on the locking lever 81 will depend upon which 40 anchor location 119, is apparent from PEG. 9 of the
of the anchor locations 119 and 1211 the anchor portion
drawings from which it will be seen that when the
shoulder 94 is in pressing engagement with the support
116 is disposed in.
The C-shaped opening 118 is located in the ?ange por
arm 84s, the anchor portion 115 will have been shifted
tion 59 so that it is centered on a radial line extending
only to the position 1152? represented by the line 127:?0
through the pivot axis 121 provided by the pin 82. and
which still lies on the left side of the radial line 123 of
the anchor locations 119? and 120? lie on opposite sides 4:5 the anchor location 119. Therefore, upon movement of
of this center line. The anchor portion 115 of the spring
the arm 34% out of its blocking position in front of the
114 lies on a radial line which extends through the pivot
shoulder 94, the expansive action of the spring 114 tend
axis 121 and occupies the location 122a when the locking
ing to spread the anchor portions 115 and 116 apart will,
lever 31 is in its unlocking position as shown in FIGS. 9
under these circumstances, result in an actuating force
50
and 10. The anchor portion 116 of the spring lies on a
being applied to the locking lever 81 whose direction is
radial line 123 when it is engaged in the anchor portion
such that it will cause a clockwise swinging of the locking
119 of the C-shaped opening and lies on a radial line 124
lever, whereby this lever will be automatically returned
when it is engaged in the anchor portion 120 of the
to its full-line unlocking position shown in FIG. 9.
On the other hand when the anchor portion 116 of
C-shaped opening.
FIGS. 9 and 10 of the drawings show the locations de
the spring 114 has been shifted to the anchor location
scribed above for the C-shaped opening 118 and the an
125} as shown in FIG. 10, and the locking lever 81 is in
the position with its shoulder 84 pressing against the
chor portions 115 and 116, and also illustrate somewhat
diagrammatically the action of the spring 114 in urging the
locking lever ?81 toward its locking and unlocking posi
tions. In FIG. 9 the anchor portion 116 of the spring
114 is engaged in the anchor location 119 of the C-shaped
opening and in FIG. 10 the anchor portion 116 is shown
the anchor portion 115 as represented by the line 122?
will then lie on the right side of the radial line 124. The
expansive action of the spring tending to spread the an
chor portions 115 and 116 apart will now result in an
as having been manually shifted to the anchor loca
tion 120.
whose direction is such as to cause a counterclockwise
support. arm 84%, the corresponding position 115?0 of
actuating force being applied to the locking lever 81
swinging of the locking lever. Therefore when the an
When the locking lever 81 is in its unlocking position
chor portion 116 of the spring 114 has been shifted to
in which it is shown in full lines in FIGS. 7, 9 and 10,
the anchor location 12% as shown in FIG. 10, the action
the shoulder 94 thereof will lie opposite the support arm
of this spring will always be to produce counterclockwise
84a when the latter is being held in its lowered position
of FIG. 6 by reason of the holding portion 6321 of the 70 swinging of the locking lever upon lifting of the support
arm 843 while the shoulder 94 is pressed against the latter,
detent lever 65 being then in engagement with the rela
and consequently, the latch mechanism 15 will operate
tively high cam portion 63d adjacent the tooth 63� of the
as a self-locking mechanism when tie door 11 is swung
ratchet member 63. The latch device 15 is, at this time,
to its closed position under these circumstances.
in its door-unlatched condition which is the case when the
door 11 is in its open position.
By the provision of the C-shaped opening 118 in the
$
3,027,184.
?ange portion 59 it will therefore be possible to convert
the latch device 15 from a self-locking mechanism to a
it)
door-latched position by the engagement of the holding
portion 1353a of the detent lever 134 in one of the full
depth tooth recesses 13% of the ratchet member 127.
shifting of the anchor portion 116 from one to the other
FIG. 12 of the drawings shows the latch member 126
of the anchor locations 119 and 129.
Cl in its safety-latched position at which time the tooth
FIGS. 11 to 14 inclusive show a door latch device 125
125a of the latch member is in a partially-engaged posi
which is similar to the latch device 15 and intended for
tion in the locking pocket 44. At this time, the holding
use with a keeper 14 but in which certain structural and
portion 133a of the detent lever 134 is engaged in one
functional differences occur. In the modi?ed latch device
of the shallow depth tooth recesses 131 of the ratchet
125 a latch member 126 is used having the form of a gear 10 member 127.
member provided with peripheral teeth, in this case ?ve
From the construction described above for the modi
such teeth. The ratchet member 127 of the latch de
tied latch device 125 it will be seen that when the locking
vice 125 is in the form of a ratchet wheel having periph
lever 136 is in its locking position in which it ?is shown
eral teeth comprising main ratchet teeth 123 and inter
in full lines in FIG. 13, the control member 73 will oc
vening auxiliary teeth 12?), in this case ?ve teeth each
cupy a position in which the ?nger 79 thereof is in its re
for such main and auxiliary ratchet teeth. The ratchet
tracted or ineffective location. At this time the detent
wheel 127 is also provided with full~depth notches or
release lever 135 will be swingable in an idle or free
toothe recesses 130 adjacent the main ratchet teeth 127
wheeling condition because the ?nger 79 will not become
and shallow-depth notches or tooth recesses 131 adjacent
engaged with the control arm 139. Under these circum
the auxiliary ratchet teeth 129. To the extent that por 20 stances the detent lever 134 will not be swingable by the
tions or elements of the latch device 125 are the same
detent release lever 135, and consequently, will remain
as in the latch device 15, the same reference numerals
in holding engagement with the ratchet member 127
have been applied thereto.
and the latch device 125 will then be in its locked con
Another important difference in the modi?ed latch de?
dition.
vice 125 is that, in the detent means 133 thereof com 25
When the locking lever 136 is swung to its unlocking
prising a detent lever 134 and a detent release lever 135,
position 136& in which it is shown in phantom lines in
the detent lever 134 lies adjacent the plate portion 5-8
FIG. 13, the control member 78 will be shifted by the
of the support 57 and the control member 78 is con
locking lever to project the ?nger 79 so that the latter
nected between the locking lever 136 and the detent re
lease lever 135. The support arm 84? with which the 30 will extend transversely of the control arm 139 and will
engage the latter when the detent release lever 135 is
locking lever 136 co-operates is, in the modi?ed latch
actuated
by the push button stem 73. The actuation of
device 125, carried by the detent release lever 135 in
the control arm 139 by the ?nger 79 will cause the hold~
stead of by the detent lever as is the case in the latch de~
ing portion 13$a of the detent arm 1381 to release the
vice 15.
ratchet member 127 to permit door-unlatching move
The detent lever 134 and the detent release lever 135 are
non-self-locking mechanism :md vice versa, merely by the
r)
both in the form of bell crank levers swingably supported
ment of the latch member 125.
arm 141 having a contact portion or ?ange 141a en
gageable by the push button stem 73 and a control arm
pens to be in its locking position. This cooperation of
the thrust ?nger 140 with the thrust shoulder 145 thus
produces an automatic unlocking of the latch device 125
which will prevent the operator from locking himself
out of the vehicle by a closing of the door while the
latch device happens to be in its locked condition.
The engagement of the thrust ?nger 140 with the shoul
der 145 to produce this automatic unlocking action is by
a counterclockwise swinging of the detent lever 134
produced by a forced rotation of the ratchet member 127
as the result of the co-operation of the latch member
126 with the keeper 14. Thus, if the latch device 125
The thrust ?nger 146 which, as mentioned above, is
by a common pivot pin 67. The detent lever 134 com
formed by the free end of the control arm 139, is engage
prises a detent arm 1355 having a holding portion 138a
able with the thrust shoulder 1455 of the locking lever 136
engageable with the ratchet wheel 127 and a control arm
139 having, at the free end thereof, a thrust portion in the 40 for producing automatic swinging of the latter to its
unlocking position whenever the vehicle door 11 is
form of a ?nger 140 whose purpose will be described
swung to its closed position while the locking lever hap
hereinafter. The detent release lever 135 comprises an
142 lying adjacent the control arm 139 and disposed
in a spaced and substantially parallel relation to the
latter. The support arm 84a and the control arm 142
are provided with substantially aligned openings 143, 144
in which the ?ngers 8t} and 79 of the control member 73
are shiftably received.
The locking lever 136 is similar to the above-described
locking lever 81 and includes an actuating bracket 35 in
whose opening 91 the stem portion 788- of the control
member 78 is slidably received. The locking lever 136
differs, however, from the locking lever 81 in that the
shoulder 94 has been omitted therefrom and in that it
is provided with a thrust shoulder 145 which does not
occur in the locking lever 81.
A Wire spring 147 having a coil-ed portion disposed in
surrounding relation to the pivot pin 67 applies a clock
wise swinging force to the detent release lever 135 tend
ing to swing this lever toward its retracted position. A
tension spring 143 is connected between an anchor lug
149 of the plate portion 58 and the free end of the detent
arm 138 and applies a clockwise rotative force to the
detent lever 134 tending to swing the same in a direction
to engage the holding portion 13$?dL in one of the tooth
recesses of the ratchet member 123.
FIG. 11 of the drawings shows the latch member 126
in its door-latched position at which time the tooth 126a
is actuated to a locked condition while the door 11 is
standing open, a subsequent movement of the door to
its fully?closed position will result in a forced counter
clockwise rotation of the ratchet member 127 and a
camming action thereof against the holding portion
138%. The resulting counterclockwise swinging of the
detent lever 134 will cause the thrust ?nger 140 to ap
ply the above-mentioned kick-out action against the
thrust shoulder 145 and thereby automatically swing
the locking lever to its unlocking position 136*?.
From the accompanying drawings and the foregoing
detailed description it will now be readily understood that
this invention provides novel door control mechanism of
a simple and practical form and in which a detent re
lease lever will have an effective action, or a free-wheel
ing idle action, relative to an associated detent lever de~
thereof is fully engaged in the locking pocket 44 of the 70 pending upon whether a control member shiftable by the
keeper 1d and lies substantially on the vertical center
locking member of the mechanism is in an effective or
line 15%) which passes through the pivot axis of the latch
member when the latter is in its door-locked position.
At this time, the'latch member 126 is retained in such
ineffective position. Since the various other novel fea
tures and the new and improved results produced by the
door control mechanism of this invention have already
1.];
been explained hereinabove, they need not be further
summarized at this point.
Although the door control mechanism of this inven
tion has been illustrated and described herein to a some
what detailed extent, it will be understood, of course,
that the invention is not to be regarded as being limited
correspondingly in scope but includes all changes and
modi?cations coming within the terms of the claims
12
release member pivoted on said support and including
a swingable second arm means adjacent said ?rst arm
means; a locking member shiftably mounted on said sup
port for movement to locking and releasing positions;
a control member having a stern portion extending ad
jacent said locking member and ?nger means rigid with
said stem portion; said ?nger means being continuously
in cooperating relation to one of said arm means and
extending transversely thereof; and means forming an
hereof.
10 actuating connection between said locking member and
Having described my invention, 1 claim:
stem portion and providing for sliding of the latter relative
1. In door control mechanism; a support adapted for
to the locking member; said control member being shift
mounting on the door; latch means pivoted on said sup
able by said locking member for movement of said ?n
port and movable to and from a door~latched position;
ger means relative to said one arm means and to effec
detent means pivoted on said support to cooperate with
tive and ine?ective control positions; said detent release
said latch means for releasably retaining the latter in said 15 member having an idle movement relative to said detent
door-latched position and including a swingable ?rst arm
means and clear of the ?nger means when said ?nger
means; a detent release member pivoted on said sup
means is in said ineiiective position and being engageable
port and including a. swingable second arm means ad
with said ?nger means, when the latter is in said effective
jacent said ?rst arm means; a locking member shiftably
position, for rendering said detent means actuatable by
mounted on said support for movement to locking and 20 said detent release member.
releasing positions; and control means comprising stem
8. Door control mechanism for use on a door having
means connected with said locking member and ?nger
an edge wall; a support having a plate portion and a
?ange portion and adapted for mounting on said door
with said plate portion facing said edge wall; latch means
arm means and extending transversely of said one arm 25 pivotally supported by said plate portion and movable
means rigid with said stem means; said ?nger means be
ing continuously in co-operating relation to one of said
means; said control means being shiftable by said lock
ing member for positioning said ?nger means in eifec
tive and ineffective control positions by movement of
said ?nger means relative to said one arm means and sub
to and from a door-latched position; detent means piv
oted on said plate portion and cooperable with said latch
means for retaining the latter in said door-latched posi
tion and including a swingable ?rst arm means; a detent
stantially in the transverse direction in which said ?nger 30 release member pivoted on said plate portion and includ
means extends said detent release member having an
idle swinging movement relative to said detent means
and clear of the ?nger means when said ?nger means is
in said ine?ective position and being engageable with
ing a swingable second arm means adjacent said ?rst arms
means; said ?rst arm means and said second arm
means being swingable in substantially parallel planes;
a locking member pivoted on said flange portion for
said ?nger means, when the latter is in said effective posi 35 swinging to locking and releasing positions; and a mov
tion, for rendering said detent menas actuatable by said
able control member having stem means connected with
detent release member.
said locking member and ?nger means rigid with said stem
2. Door control mechanism as de?ned in claim 1
means; said ?nger means being continuously in co-operat
wherein said one arm means is provided with opening
40 ing relation to one of said arm means and extending
means through which said ?nger means projects so as
transversely of said one arm means; said control member
to extend into the path of swing-ing movement of said
other arm means when the ?nger means is in said ef
fective position.
3. Door control mechanism as de?ned in claim 1
wherein said ?rst and second arm means are swingable
about a common pivot axis and in substantially parallel
planes; and wherein said one arm means is provided with
opening means in which said ?nger means is con?ned
for the transverse shifting movement thereof; said en
gagement between said ?nger means and said detent re
lease member being with an edge portion of the arm
being shiftable by said locking member for moving said
?nger means substantially in the transverse direction in
which said ?nger means extends and to effective and in
effective control positions; said detent release member
having an idle movement relative to said detent means
and clear of the ?nger means when said ?nger means
is in said ineffective position and being engageable with
said ?nger means, when the latter is in said effective po
sition, for renderng said detent means actuatable by said
detent release member.
9. Door control mechanism as de?ned in claim 8
means of the latter.
wherein said locking member has projection means there
4. Door control mechanism as de?ned in claim 1
on provided with an opening; and wherein said stem
wherein said one arm means comprises spaced arm por
means is slidable in said opening.
55
tions having substantially aligned openings therein; and
10. In door control mechanism; a support adapted for
wherein said ?nger means extends through said aligned
mounting on the door; latch means pivoted on said sup
openings.
port and movable to and from a door-latched position;
5. Door control mechanism as de?ned in claim l
detent means cooperable with said latch means for re?
wherein said one arm means comprises spaced arm por
tions having substantially aligned openings therein; and
wherein said ?nger means comprises aligned ?nger por
tions extending in opposite directions on opposite sides
of said stem means and projecting into said openings.
leasably retaining the latter in said door-latched posi
tion and including a swingable ?rst arm means; a detent
release member pivoted on said support and including
a swingable second arm means adjacent said ?rst arm
means; a locking member shiftably mounted on said sup
port for movement to locking and releasing positions;
6. Door control mechanism as de?ned in claim 1
65
one of said arm means comprising a pair of spaced arms;
wherein the connection between said stern means and
and a T-shaped control member comprising a stem por
locking member comprises co-operating portions thereon
tion extending from the space between said arms and
providing for relative sliding between said stem means
connected with said locking member and a transverse
and locking member.
7. In door control mechanism; a support adapted for
mounting on the door; latch means pivoted on said sup
port and movable to and from a door-latched position;
bar portion rigid with the stem portion and spanning
said space; said control member being shiftable by said
locking member for moving said bar portion transversely
of said arms to etfective and ineffective control positions;
said detent release member having an idle movement
tion and including a swingable ?rst arm means; a detent 75 relative to said detent means when said bar portion is in
detent means cooperable with said latch means for re
leasably retaining the latter in said door-latched posi
13
3,027,184?
said ineffective position and the other of said arm means
being engageable with said bar portion, when the latter is
in said effective position, for rendering said detent means
actuatable by said detent release member.
11. In door control mechanism; a support adapted for
mounting on the door; latch means pivoted on said sup
port and movable to and from a door-latched position;
detent means cooperable with said latch means for re~
leasably retaining the latter in said door-latched position
and including a swingable ?rst arm means; a ?detent re
lease member pivoted on said support and including a
swingable second arm means adjacent said ?rst arm
means; a locking member shiftably mounted on said sup
port for movement to locking and releasing positions; one
of said arm means comprising a pair of spaced arms
having substantially aligned openings therein; and a T
shaped control member having a stem portion connected
With said locking member and ?nger means rigid with
i4
lease member; said locking member having blocking
means co-operable with said arm means and movable
to a blocking position relative to the latter by the shifting
of said locking member to said locking position for pre
venting a release actuation of said detent member by
the idle movement of said detent release member.
14. In door control mechanism; a support adapted for
mounting on the door; latch means pivoted on said sup
port and movable to and from a door-latched position;
10 a detent member co-operable with said latch means for
retaining the latter in said door-latched position and in
cluding a swingable arm means; a detent release member
pivoted on said support and having an actuating portion
adjacent said arm means; a locking member mounted on
said support for shifting to locking and unlocking posi
tions; and a control member having a stem portion con
nected with said locking member and ?nger means rigid
with saidgstem portion and extending transversely of said
said stem portion and comprising oppositely extending
arm means; said ?nger means being continuously in co
?nger portions received in said openings; said control 20 operating relation to said arm means; said control mem
member being shiftable by said locking member for mov
ber being shiftable relative to said arm means by said
ing said ?nger means in said openings and to etiective
locking member by shifting said ?nger means transversely
and ineffective control positions; said detent release mem
ber having an idle movement relative to said detent means
of said arm means to effective and inelfective positions;
said detent release member having an idle movement rel
ative to said detent member and clear of the ?nger means
when said ?nger means is in said ineffective position and
when said ?nger means is in said ineffective position and
the other of said arm means being engageable ?with said
?nger means, when the latter is in said effective position,
being engageable with said ?nger means, ?when the latter
for rendering said detent means actuatable by said de
is in said e?ective position, for rendering said detent mem
tent release member.
ber actuatable by said detent release member.
12. In door control mechanism; a support adapted for 30 ?15. In door control mechanism; a support adapted for
mounting on the door; latch means pivoted on said sup
mounting on the door; latch means pivoted on said sup
port and movable to and ?from a door-latched position;
port and movable to and from a door-latched position;
detent means cooperable with said latch means for re
leasably retaining the latter in said door-latched posi
tion and including a swingable ?rst arm means; a detent
release member pivoted on said support and including
a swingable second arm means adjacent said ?rst arm
means; a locking member shiftably mounted on said sup
detent means cooperable with said latch means for re
leasably retaining the latter in said door-latched position
and including a swingable arm means; a detent release
member pivoted on said support and including a swing
able actuating portion adjacent said arm means; a look
ing member pivotally mounted on said support for swing
ing to locking and releasing positions; said arm means
40 comprising a pair of spaced arms having aligned open
port for movement to locking and releasing positions; one
of said arm means comprising a pair of spaced arms;
a T-shaped control member comprising a stem portion
ings therein; and a control member comprising a stem I
extending from the space between said arms and toward
portion connected with said locking member and ?nger
said locking member and a transverse bar portion rigid
means rigid with said stem portion and received in said
with the stem portion and spanning said space; and means
openings; said control member being shiftable by said
forming an actuating connection between said locking 45 locking member for movement of said ?nger means trans
member and stem portion and providing for sliding of
versely of said arm means to effective and ine?ective
the latter relative to the locking member; said control
control positions; said detent release member having an
member being shiftable by said locking member for
moving said bar portion transversely of said arms to
effective and ineffective control positions; said detent re
lease member having an idle movement relative to said
detent means when said bar portion is in said ineffective
position and the other of said arm means being engage
idle movement relative to said detent means when said
?nger means is in said inetfective position and said ac
tuating portion being engageable with said ?nger means,
when the latter is in said effective position, for render
ing said detent means actuatable by said detent release
member.
16. In door control mechanism; a support adapted for
able with said bar portion, when the latter is in said ef~
fective position, for rendering said detent means actuat 55 mounting on the door; latch means pivoted on said sup
able by said detent release member.
port and movable to and from a door-latched position;
13. In door control mechanism; a support adapted for
detent means co-operable with said latch means for re
mounting on the door; latch means pivoted on said sup
leasably retaining the latter in said door-latched posi
port and movable to and from a door-latched position;
tion and including a swingable ?rst arm means; a detent
a detent member co-operable with said latch means for
60 release member pivoted on said support and including a
retaining the latter in said door-latched position and
swingable second arm means adjacent said ?rst arm
including a swingable arm means; a detent release member
means; a locking member shiftably mounted on said sup
pivoted on said support and having an actuating portion
port for movement to locking and releasing positions;
adjacent said arm means; a locking member ?mounted on
said second arm means comprising spaced arms having
said support for shifting to locking and unlocking posi~ 65 aligned openings therein; and a control. member com
tions; and a control member connected between said
prising a stem portion connected with said locking mem
locking member and said detent member and being shift
ber and ?nger means rigid ?with said portion and received
able relative to said arm means by said locking member
in said openings; said control member being shiitable
for ?movement of the control member to effective and in
by said locking member for moving said ?nger means
effective positions; said detent release member having an 70 transversely of said second arm means to e?ective and
idle movement relative to said detent member when said
inneffective control positions; said detent release mem
control member is in said inetfective position and said
ber having an idle movement relative to said detent
actuating portion being engageable ?with said control mem
means when said ?nger means is in said ineffective posi
ber, when the latter is in said effective position, for ren
tion and said ?rst arm means being engageable with
dering said detent member actuatable by said detent re 75 said ?nger means, when the latter is in said effective po
3,027,184.
15
means; a detent actuating lever pivoted on said support
and comprising a bell crank lever having thrust arm
means effective on said holding arm means for moving
the latter into holding engagement with said ratchet mem
ber, and actuator arm means co-operable with said con
trol arm means for swinging said detent member in a
direction to cause said holding arm means to release said
mounting on the door; latch means pivoted on said sup
port and comprising a latch member movable to and from
a door-latched position and a ratchet member connected
with the latch member; a detent member pivoted on said
support and co-operable with said ratchet member for
retaining said latch member in its door-latched position
and including a swingable ?rst arm means; a detent re
ratchet member; and a single spring means biasing said
latch member, said detent member and said detent ac
lease member pivoted on said support and including a
swingable second arm means adjacent said ?rst arm
means; a locking member pivoted on said support for
tuating lever in the same rotative direction and com
prising a tension spring connected between said anchor
swinging to locking and releasing positions and includ
means and said thrust arm means; the bias action of said
tension spring on said thrust arm means being in a direc
ing a thrust portion; said ?rst arm means having an ex
tension portion and said second arm means comprising
spaced arm portions; and a control member having a
stern portion connected with said locking member and
?nger means rigid with said stem means and extending
in a transverse spanning relation across the space be
lb
crank lever having holding arm means co-operable with
said ratchet member for retaining said latch member in
said door-latched position and swingable control arm
sition, for rendering said detent means actuatable by said
detent release member.
17. In door control mechanism; a support adapted for
tion to cause said holding engagement of said holding
arm means with said ratchet member, and the bias action
on said latch member being in a direction to assist the
20
tween said arm portions; said control member being shift
able by said locking member for moving said ?nger
means transversely of said second arm means and to
effective and ineffective positions; said detent release
member having an idle movement relative to said detent
member when said ?nger means is in said ineffective posi
tion and said ?rst arm means being engageable with said
?nger means, when the latter is in said effective position,
for rendering said detent member actuatable by said de
tent release member; said extension portion being en 30
gageable with said thrust portion for automatically swing
ing said locking member to its releasing position upon
actuation of said detent member by said ratchet member
in response to a forced pivotal movement of the ratchet
member by said latch member.
18. In door control mechanism; a support adapted for
mounting on the door; a latch member movable to and
from a door-latched position by pivotal movement in
latching and unlatching directions; a pivotally movable
ratchet member; shaft means pivoted on said support and
connecting said latch member and ratchet member; a
detent member pivoted on said support and comprising a
bell crank lever having holding arm means oo-operable
with said ratchet member for retaining said latch mem
ber in said door-latched position and swingabie control
arm means; a detent actuating lever pivoted on said sup
port and comprising a bell crank lever having thrust means
effective on said holding arm means for moving the latter
unlatching movement thereof.
20. In door control mechanism; a support adapted for
mounting on the door; latch means pivoted on said sup
port and movable to a door-latched position; manually
operable lever means pivoted on said support and co
operable with said latch means for releasably holding the
latter in said door-latched position and including swing
able control arm means; a locking lever pivoted on said
support for swinging actuation thereof to locking and
releasing positions and (to-operable with said control arm
means for preventing latch- eleasing actuation of said
lever means when said locking lever is in said locking
position; manually operable means effective on said lock
ing lever for swinging the same toward said locking and
releasing positions; a spring of the over-center snap-action
type having an anchorage portion and a movable actuating
portion connected respectively with said support and
locking lever for controlling the swinging movement of
the latter; and connection means on said support provid
ing two location points for the connection of the
anchorage portion of said spring therewith and which
location points lie on opposite sides of a median ?line ex
tending through the pivot axis of said locking- lever; the
connection of said anchorage portion of the spring with
said support being selectively adjustable by manual shift
ing from one to the other of said location points; said
spring being subject to loading by the swinging actuation
of said locking lever toward said locking position and
being also responsive to the connection thereof at one of
said points with said support for urging said locking lever
into holding engagement with said ratchet member, and
toward said locking position and responsive to the con
actuator arm means co-operable with said control arm 50 nection thereof at the other of said points with said sup
means for swinging said detent member in a direction to
port for urging said locking lever toward said unlocking
cause said holding arm means to release said ratchet
position; said connection means for connecting said spring
member; and a single spring means biasing said latch
with said support comprising a C-shaped opening in the
member, said detent member and said detent actuating
latter and whose end portions form said location points
lever in the same rotative direction.
19. In door control mechanism; a support adapted for
mounting on the door; a latch member movable to and
from a door-latched position by pivotal movement in
latching and unlatching directions; a pivotal-1y movable
ratchet member; shaft means pivoted on said support and 60
connecting said latch member and ratchet member; means
?xed on said shaft means and providing an eccentric
anchor means swingable with the shaft means; a detent
member pivoted on said support and comprising a bell
and are disposed on opposite sides of said median line.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,480,688
Allen ______ ___ ________ __ Aug. 30, 1949
2,658,781
2,658,782
2,665,159
2,716,568
Allen _______________ __ Nov. 10,
Allen ________________ __ Nov. 10,
Allen _________________ __ Jan. 5,
Davies ______________ __ Aug. 30,
1953
1953
1954
1955
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