US3121579A - Vehicle door latch mechanism - Google Patents

Description

1954 A. J. D! SALVO ETAL 3,121,579

VEHICLE DOOR LATCH MECHANISM Filed Sept. 15, 1961 2 Sheets-Sheet 1 AN THON) J. 0 15/1410 MAURICE M. WES TERDA L ,5

IN VEN TORS A. J. Dl SALVO ETAL 3,121,579

VEHICLE DOOR LATCH MECHANISM Feb. 18, 1964 2 Sheets-Sheet 2 Filed Sept. 13, 1961 AN THON) J DIS/1L V0 MAUR/CE M. WESTERDALE BY Ma ATTORNEYS United States Patent M 3,121,579 VEHECLE DOQR LATCH MECHANISM Anthony J. Di Salvo, Allen Park, and Maurice M. Westerdale, lnkster, Mich., assignors to Ford Motor Company, Dearhorn, Mich, a corporation of Delaware Filed Sept. 13, 1951, Ser. No. 137,765 4 Claims. ((31. 292F 48) This invention relates to latch mechanisms for swinging doors, especially the doors of automobile or other vehicle bodies.

Most door latch mechanisms currently in use on passenger motor vehicles comprise a rotatable or pivotable latch device adapted to engage a striker or keeper device mounted on a vehicle door framing structure, a detent means releasably engaged with the latch device to hold the latter in door latched position, an actuating or release lever operatively associated with the detent means for disengaging the same from the latch device, and manually operable means accessible from the outside and inside of the vehicle door operative to cause disengagement of the detent means. In almost alllatch mechanisms of this general class, the manually operable means operative from the outside of the door acts on the detent means through the actuating or release lever. The manually operable means operative from the inside of the door may be constructed and arranged to act directly on the detent means or through the actuating or release lever, depending on whether or not it is desired to have a latch mechanism which cannot be rendered inoperative from the inside of the vehicle. Most vehicles are provided with at least one door which can always be opened from the inside of the passenger compartment even if the latch mechnism is conditioned so that the door cannot be opened from the outside.

Latch mechanisms may be categorized by the manner in which the manually operable means is rendered inoperative to disengage the detent means from the latch device to place the latch mechanism in locked condition. This may be done by the use of a blocking means selectively positionable to block movement of the detent means actuating or release lever. This may also be done by use of a disconnection means interposed in the train of members extending from the manually operable means to the detent means.

Reference may be made to US. Patent No. 2,987,336, issued June 6, 1961, for a latch mechanism exemplifying the type in which a blocking means is used to render the manually operable means inoperative to disengage the detent means from the latch device.

It is an object of the present invention to provide a latch mechanism characterized by many of the features of the latch mechanism disclosed in the above-mentioned patent and which is further characterized by the inclusion of features by which the means manually operable from the outside of the door, such as the handle, push button or like operated means, may be operatively disconnected from the detent actuator or release lever.

More specifically, in the latch mechanism embodying the present invention, the train of parts or members operatively associating the handle, push button or the like to the detent means includes a part or member directly coupled to the detent means but being shiftable thereon from a detent actuating to a detent non-actuating position. This part or member is shiftable by a locking lever operable from either the outside or the inside, or both, of the door. A latch mechanism so constructed is said to have a free wheeling handle, push button or the like as distinguished from a blocked type. In other words, the handle, push button or the like is always responsive to finger pressure regardless of whether or not the latch mechanism is in locked or unlocked con- 3,121,579 Patented Feb. 18, 1964 dition, even through movement of the handle, push button or the like in locked condition of the latch mechanism is not effective to cause disengagement of the detent means from the latch device.

Probably the major advantage to be derived from socalled free wheeling type latch mechanisms is that the latch mechanism parts, particularly those in the train of elements between the outside operator and the detent means, may be made of much lighter gauge metal than the parts used in a blocked type lock. The reason is that in a blocked type lock, the parts must be made strong enough to withstand any force which might be exerted on the outside operator by means of a pry bar, hammer or other device which may be used when it is attempted to break or make a forceful entry through the door when the door is in locked condition. It will be readily apparent that in a latch mechanism where part of the train of elements is disconnected, any force exerted on the handle, push button or the like by an implement of any kind is ineffective to distort or spring the latch mechanism parts to a degree sufficient to cause disengagement of the detent [from the latch device so as to permit the door to be opened. This, of course, applies to any impact the handle, push button or the like might sustain in a collision or upset of the vehicle. The use of light gauge metal results in a cost saving in the manufacture of the latch mechanism. Less metal is used and the life of the die for stamping the parts is much longer with light gauge metal.

Other objects, advantages and features of the present invention will be made more apparent as this description proceeds, reference being had to the accompanying drawings, wherein:

FIG. 1 is an elevational view of the latch mechanism as it appears from the inside of the vehicle door;

FIG. 2 is a fragmentary view in part similar to FIG. 1 illustrating parts of the latch mechanism in an operative position ditferent from that shown in FIG. 1;

FIG. 3 is an elevational view in part sectional taken from the right side of FIG. 1; and

FIG. 4 i an enlarged sectional view taken on the line 44 of FIG. 1.

In the drawings there is illustrated, by Way of example, a preferred embodiment of the present invention as applied to the doors and door frame structures of an automobile body. Adapted to be secured as by means of screws (not shown), to the inner side of the free edge wall of a vehicle door is a case plate 11 having a flange 12 which is adapted .to be positioned along the inner panel of the door. The present latch mechanism has a pair of pivoted latch devices comprising jaw elements 13 (see FIG. 3) positioned at the outer face of the case plate 11. As best seen in FIG. 3, each jaw element 13 is provided with an integral stud or pivot shaft 14 having a reduced bearing portion 16 extending through an aperture in the case plate, the aperture having a flanged edge '17 providing bearing support for the bearing portion 16. -In FIG. 3, a washer 18 is shown interposed between the case plate 11 and the main body portion of the stud shaft 14. The inner reduced end or hearing portion 16 of the stud shaft i provided with longitudinally extending flats 19 thereon. Fitted over the reduced end or hearing portion 16 and keyed thereto by the flats 19 are a pair of control plates 21 and 22, respectively. From the foregoing, it is apparent that each jaw element 13 is rigidly coupled to a control plate 21 and 22, respectively, being concentric therewith on a stud shaft 14. As defined herein, each latch device thus comprises a jaw element 13, a stud shaft or pivot 14 and a respective control plate 21 and 22.

Each jaw element 13 is a substantially triangular plate member having its pivot axis located near the apex end. The base or side 23 opposite the apex end is outward-1y r 3 rounded and is provided in the center thereof with a semicircular recess or enlarged notch 24.

Each control plate is a gear sector having teeth 26, the teeth being intermeshed to thereby couple the control plates together for correlated movement. Thus, both jaw elements 1.3 are controlled for movement in unison in counterdirections of swinging movement toward and from each other into and out of door latched condition. A spiral spring 27 is disposed substantially coaxially or concentric with and adjacent the inner face of the control plate 21. The spring 27 has its inner end 23 operatively connected to the stud shaft 14 carrying the control plate 21, the stud shaft having a diagonal slot or kerf 29 receiving the spring end. The outer or free end 31 of the spring 27 is looped over the edge of a notch 32 in the case plate flange 12. The spring 27 is installed in a wound up or preloaded condition so that at all times it tends to rotate control plate 21, shaft 14 and jaw element 13 associated therewith in a counterclockwise direction as viewed in FIG. 1. Since the control plate 22 is coupled to the control plate 21 through the gear teeth 26, rotative force exerted by the spring 27 on the plate 21 is transmitted to the plate 22 so that it, at all times, is under a rotative force tending to rotate it, shaft 14 and jaw element 13 associated therewith in a clockwise direction as viewed in FIG. 1.

The control plate 22 is provided with two peripherally spaced abutments or ratchet teeth 53 and 34, respectively. Cooperable with the abutment or ratchet toothed edge of the control plate 22 is a swinging detent, pawl or dog 35 pivotally mounted on a shoulder rivet 36 secured to the case plate 11. It will be noted that the detent 35 extends in a substantially horizontal direction across the case plate 11 and is pivoted intermediate its ends. At one side of the pivot axis, the right side as viewed in FIG. 1, the detent is provided with an abutment portion 37 extending in a substantially upward direction and cooperable with the teeth or abutments 33 and 34 on the control plate 22. When the detent abutment 37 is in engagement with the control plate abutment 33, the jaw elements 13 will be in a safety latched position. When the abutment 37 is in engagement with the latched control plate abutment 34, as shown in FIG. 1, the jaw elements 13 will be in final latched position, as will be more fully explained. To the right of its pivot axis 56, the detent 35 is provided with an extension 38 and to the left of its pivot axis it is provided with an enlarged stepped or embossed portion 3-9. The enlarged portion 39 of the detent has a substantially L-shaped slot 41 therein. The slot 41 has two sections, section 42 extending radially of the pivot axis 36 and section 43 extending upwardly from the inner end of the section 42 and circumferentially relative to the pivot axis 36.

Extending through the slot 41, is a stepped cylindrical hearing or bushing member, generally designated 44. The bushing 44 is preferably made of a low friction coefiicient material, such as one of the nylon" or Teflon plastics used for hearing or bushing devices. As best seen in FIG. 4, the bushing 44 has an enlarged head portion 45 at one end thereof and a smaller diameter cylindrical portion 46 which slidably fits through the slot 41. On the end opposite the enlarged head portion 45 of the bushing, the cylindrical portion 46 is encompassed by one end 47 of a lever, generally designated 48. A washer 49' is interposed between the adjacent surfaces of the lever 48 and the detent portion 39. The lever end 47 is coupled to the bushing by a washer Sil snapped over shoulder 51. The bushing 44 has a longitudinally extending aperture 52 therethrough. At the end of the bushing opposite its head end, the aperture 52 is intersected by a semicircular recess 53 having lip portions 54 creating a restricted entrance to the recess.

The recess 53 and the longitudinally extending hole 52 are adapted to receive the L-shaped end 55 of a link or rod 56 connecting the bushing 44 to a bell crank lever as viewed in the drawings.

57 pivotaily supported on a bracket 53 at the upper part of the vehicle door (not shown). The bracket 53 may be in an integral part of a door handle assembly or otherwise mounted within the door. The lever 5'7 has a depending flange portion 59* which lies in the path of the plunger or stem 61 which forms an extension of a conventional push button mounted in a door handle accessible from the outside of the vehicle door.

Referring now to FIG. 1, the bushing 44 is illustrated as being at the extreme outer end of the radially extending section 42 of the slot 41 in the end 39 of the detent 35. Upon the door handle push button being depressed so that its stem 61 moves toward and engages the flange 59 on the bell crank lever 57, the bell crank lever 57 will be swung in a counterclockwise direction raising the link 57 and also the bushing 44. But since the bushing 44 is held against upward movement relative to the detent 35 by its relationship to the slot section 42, the movement of the link 56 is transmitted to the detent 35 causing the latter to be swung in a clockwise direction It will be readily apparent that this will cause the abutment 37 on the detent 35 to move out of the path of the abutments 34 and 53 on the latch control plate 22. This permits the spring 27 to urge the jaw elements toward unlatched condition and thereby permitting the vehicle door to be opened.

Referring now to FIG. 2, it will :be noted that the bushing is shown at the inner end of the section 42 of the slot 41 or in position to move upwardly in the circumferential section 43 of the slot 41. Under this condition, upward movement of the link 56 through actuation of the bell crank lever 57 remains effective to raise the bushing 44. The latter, however, moves freely relative to the detent 35 and the latter is thereby maintained in a relationship such that its abutment 37 blocks movement of the control plate 22.

The position of the bushing 44 is controlled by the above-mentioned lever 48, which may hereinafter be referred to as the locking lever. This lever 48 is substantially L-shaped, the aforementioned end 47 thereof being the upper end of a curved substantially vertically upstanding leg 62 with the base leg 63 comprising a substantially horizontal portion. The lever 48 is pivotally mounted intermediate the ends of the base leg 63 on a pivot stud 64 secured to the case plate 11. The vertical leg 62' is embossed away from the plane of the case plate 11 so that its upper end will overlie the end 39 of the detent 55. This leg 62. is provided with a curved slot 65 through which the bushing 44 cylindrical portion 46 projects.

When the locking lever 48 is in the position shown in FIG. 1, the bushing 44 will be held by the lever arm 62 at the extreme outer end of the section 42 of the detent slot 41. The position of the bushing 44 in the slot 65 is substantially intermediate the ends of the latter. As the rod 56 is lifted upon actuation of the bell crank 57, the detent 35 will be actuated as the bushing 44 travels up the slot 65. Thus, no motion of the bushing 44 is transmitted to the locking lever.

As the locking lever 48 is swung in a clockwise direction from its FIG. 1 to its FIG. 2 position, it laterally shifts the bushing 44 inwardly to position the latter at the base of the circumferentially extending section 43 of the detent slot 41. Now if the rod 56 is raised by actuation of the bell crank 57, the bushing 44 will idly travel up the overlying portions of the slots 41 and 65 without causing movement of either the detent 35 or blocking lever 48. The latch mechanism may then be considered in locked or free wheeling condition which means that the door may not be unlatched by operation of the outside operator or push button.

It will be noted that the detent 35 has a downwardly extending part 66 which is adapted to abut a projection 67 of the locking lever. This abutting relationship serves two functions: First, it provides a stop limiting the extent to which the locking lever may be swung in a counterclockwise direction. Further, when the latch control plate 22 is in its unlatched position, the surface 68 of the abutment 33 will overlie the corner of the abutment 37 on the-detent. This prevents the latter from moving into a fully latched position relative to the control plate 22. As a result, the portion 66 of the detent 35 will be positioned somewhat below its position shown in FIGS. 1 and 3 and will obstruct upward movement of the portion 67 of the locking lever 48. This prevents the latter from being swung so as to fully swing its arm 62 in an upward direction. The degree of movement is such that the bushing 44 will not come out of the section 42 of the slot 41, and the latch mechanism can thus not be placed in latch locked or free wheeling condition. The relationship of the parts is such that the latch mechanism can only be placed in latch locked or free wheel condition when the door is closed and the jaw elements fully encompass the striker or keeper device with which they coact to maintain the door in a latched condition.

The locking lever 48 is adapted to be swung from nonlocking position into locking position in a conventional manner either from the inside or the outside of the vehicle door. For actuation from the inside of the door, the end of the locking lever 48 to the right of the pivot axis 64 is provided with an aperture 69 therein to receive the end of a rod (not shown) provided with an access button (not shown) located on the inner side of the door panel in an accessible location. For actuation from the outside of the door, the locking lever 48 is provided at the other side of its pivot axis with an aperture 71 located in the leg 62. This aperture 71 is adapted to receive a rod or link (not shown) coupled to a crank arm of a conventional key operated mechanism accessible from the outside of the vehicle door in a manner well-known in the art.

The locking lever 48 is yieldably held and urged toward its limits of movement by means of a snap-over or toggle spring 72 of suitable strength attached at one end to the locking lever 48 and at its other end to the case plate 11. As was stated above, the limit of movement of the locking lever 48 in a clockwise direction is controlled by the abutment portion 66 of the detent 35. The movement of the locking lever in a counterclockwise direction is controlled by the position of the bearing 44 in the end portion of the slot section 42, the toggle spring thus being effective to ensure that the bushing 44 is urged fully to the left of the end section 42 of the slot as viewed in FIG. 1.

The present latch mechanism is preferably operated from the inside of the door through the medium of a remote control mechanism comprising a longitudinally shiftable drag link 73 which is pivotally connected to the lower end 74 of a bell crank lever 75 (see FIG. 3). The bell crank lever 75 is pivoted on the shank of a shoulder rivet 76 secured to the case plate flange 12. The bell crank lever 75 is provided with an angularly upwardly extending arm 77 adapted to overlie the extension 38 on the end of the detent means 35. Upon the bell crank lever being swung in a clockwise direction as viewed in FIG. 3, it will engage the extension end 38 of the detent 35 causing the latter to be swung in a clockwise direction out of engagement with the ratchet teeth abutments 33 and 34. It should be noted that actuation of the detent 35 through the remote control bell crank lever 75 is independent of actuation by the outer manually operable means. Thus, even if the outside operator is rendered inoperative to disengage the detent from the latch device, the detent can always be disengaged from the latch device from the inside of the vehicle through actuation of the remote control mechanism.

The detent 35 is urged into latching engagement with the ratchet teeth abutments 33 and 34 by a coil spring 78 having its inner end held in a kerf or slot 79 in the pivot stud 36 mounting the detent 35 on the case plate 11. The spring 78 is provided with a horizontally extending free end portion 81 which overlies an edge of the step or embossment 39 in the detent. The free end portion 81 of the spring extends further so as to also overlie the path of upward movement of the bushing 44. The purpose of this is to ensure that the bushing 44 will not be frictionally caught in the upper end of the section 43 of the slot 41, but will always be urged toward the lower end of the section 43 of the slot. Thus, when the link 56 is raised with the bushing 44 in the free wheeling position, and the link is then released upon release of the push button extension 61 from bearing engagement with the flange 59 on the bell crank 57, the bushing will be restored to the intermediate position shown in FIG. 1 where it is in position to be urged toward the section 42 of the slot 41 upon restoration of the locking lever to nonlocking position.

The manner in which the jaw elements 13 are adapted to coact with a striker or keeper device, generally desig nated 82, as seen in FIG. 3, is fully described in the above-mentioned US. Patent 2,987,336. Accordingly, reference is made to that patent for these details.

It will be understood that the invention is not to be limited to the exact construction shown and described, but that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

We claim:

1. In a latch mechanism for a swinging door, a support plate for disposition at a free edge wall of the door, pivoted latch device means mounted on said support plate, detent means pivotally mounted on said support plate and engageable with said latch device means for holding the same in door latching position, outer manually operable means for pivotally actuating said detent means to disengage the same from said latch device means, said outer manually operable means including a member coupled to said detent means and shiftable from a detent actuating position to a detent non-actuating position on said detent means, a locking lever pivotally mounted on said support plate, means coupling said outer manually operable means member to said locking lever for bodily shiftable movement thereby and for movement relatively thereto, and means operable to move said locking lever to shift said outer manually operable means member on said detent means from detent means actuating position to detent means mon-actuating position, upon operation of said outer manually operable means said member being mov able relative to said locking lever when either in said detent means actuating position or in said detent means non-actuating position, said detent means and latch device means having parts thereof adapted to abut each other in unlatched position of the latter to thereby displace said detent means from its normal latch device means holding position, said detent means in displaced position having a second part thereof blocking movement of said locking lever in a direction to place said outer manually operable means member in detent non-actuating position.

2. In a latch mechanism for a swinging door, a support plate for disposition at a free edge wall of the door, pivoted latch device means mounted on said support plate for movement between door latched and unlatched positions, a detent pivotally mounted intermediate its ends on said support plate and having at one side of its pivot axis a part thereof engageable with a part of said latch device means for holding the same in door latched position, outer manually operable means for pivotally actuating said detent to disengage its said part from said latch device means, said outer manually operable means including a member coupled to said detent at the other side of said pivot axis, a locking lever means pivotally mounted on said support plate, means coupling said member to said locking lever means for bodily shiftable movement thereby and for movement relatively thereto, said member being shiftable by said locking lever means from a detent actuating to a detent nonactuating position on said detent, said part of said detent and a part of said latch device means being adapted to abut each other in unlatched position of the latter to thereby displace said detent from its normal latch device means holding position, said detent in dis placed position having a second part thereof blocking movement of said locking lever means in a direction to place said outer manually operable means member in detent non-actuating position.

3. In a latch mechanism for a swinging door, a sup port having a main plate portion for disposition at a ifree edge wall of the door, a pair of jaw elements pivotally mounted on one side of said plate portion for swinging movement about spaced axes perpendicular to the plane thereof, a pair of control members mounted on the opposite side of said plate portion, each control member being fixedly coupled to one of said jaw elements for pivotal movement therewith, said control members having intermeshed portions whereby said jaw elements are controlled for movement in unison toward and from each other to door latched and door unlatched positions, respectively, at least one of said control members being provided with detent engageable portions, detent means pivotally mounted on said plate portion and engageable with said detent engageatble portions for holding said jaw elements in door latched position, outer manually operable means mounted on said support for pivotally actuating said detent means to disengage the same from said detent engageable portions to permit movement of both jaw elements to door unlatched position, said outer manually operable means including a member coupled to said detent means and shiftable from a detent means actuating position to detent means non-actuating position on said detent means, a locking lever pivotally mounted on said main plate portion, means coupling said outer manually operable means member to said locking lever for bodily shiftable movement thereby and for movement relatively thereto, and means operable to move said locking lever to shift said outer manually operable means on said detent means from detent means actuating to detent means non-actuating position, said outer manually operable means member and said locking lever at all times being movable relative to one another transversely of the direction of movement of said outer manually operable means member between said detent means actuating position and said detent means nonactuating position, said one control member having a part thereof adapted to abut a part of said detent means in unlatched position of said jaw elements to thereby displace said detent means from its normal holding position, said detent means in displaced position having a second part thereof blocking movement of said locking lever in a direction to place said outer manually operable means in detent means nonactuating position.

4. In a latch meachanisrn for a swinging door, a sup-' the plane thereof, a pair of control members mounted on the opposite side of said plate portion, each control member being fixedly coupled to one of said jaw elements for pivotal movement therewith, said control members having intermeshed portions whereby said jaw elements are controlled for movement in unison toward and from each other to door latched and door unlatched positions, respectively, at least one or said control members being provided with a detent engage-able portion, a detent pivotally mounted on said support plate and having at one side of the pivot axis thereof an abutment engageable with said detent engageable portion for holding said jaw elements in door latched position, and outer manually operable means mounted on said support for pivotally actuating said detent to disengage the same from said detent engageable portion to permit movement of both jaw cl ments to door unlatched position, a bushing means, said bushing means projecting through a slot in said detent at the opposite side of said pivot axis thereof, said slot having a first section extending radially and a second section extending circumferentially relative to said detent pivot axis, a link means coupling said outer manually operable means to said bushing means, said link means comprising a link having an end portion passing through the center of said bushing means, a locking lever pivotally mounted on said support plate, said locking lever having a slotted end portion circumferentially encompassing said bushing means, and means operable to move said locking lever to shift said bushing means from said first section to said second section of said detent slot or vice versa, said bushing means when positioned in said first section being operative to transmit movement of said outer manually operable means to said detent to actuate the same and when in said second section being freely movable relative to said locking lever and on said detent without causing actuation of the latter, said bushing means and locking lever slotted portion at all times being movable relative to one another transversely of the direction of movement of said bushing means between said radial and circumferential portions of said slot, said one control member having a part thereof adapted to abut a part of said detent in unlatched position of said jaw elements to thereby d-isplace said detent from its normal holding position, said detent in displaced position having a second part thereof blocking movement or" said locking lever in a direction to place said outer manually operable means member in detent non-actuating position.

References Cited in the file of this patent UNITED STATES PATENTS 2,236,702 Andersen Apr. 1, 1941 2,629,618 Roethel Feb. 24, 1953 2,728,214 Craig Dec. 27, 1955 2,782,062 Smith Feb. 19, 1957 2,916,318 Van Voorhees Dec. 8, 1959 2,944,850 Roe-thel July 12, 1960 2,987,336 Kramer June 6, 1961

Claims (1)

1. IN A LATCH MECHANISM FOR A SWINGING DOOR, A SUPPORT PLATE FOR DISPOSITION AT A FREE EDGE WALL OF THE DOOR, PIVOTED LATCH DEVICE MEANS MOUNTED ON SAID SUPPORT PLATE, DETENT MEANS PIVOTALLY MOUNTED ON SAID SUPPORT PLATE AND ENGAGEABLE WITH SAID LATCH DEVICE MEANS FOR HOLDING THE SAME IN DOOR LATCHING POSITION, OUTER MANUALLY OPERABLE MEANS FOR PIVOTALLY ACTUATING SAID DETENT MEANS TO DISENGAGE THE SAME FROM SAID LATCH DEVICE MEANS, SAID OUTER MANUALLY OPERABLE MEANS INCLUDING A MEMBER COUPLED TO SAID DETENT MEANS AND SHIFTABLE FROM A DETENT ACTUATING POSITION TO A DETENT NON-ACTUATING POSITION ON SAID DETENT MEANS, A LOCKING LEVER PIVOTALLY MOUNTED ON SAID SUPPORT PLATE, MEANS COUPLING SAID OUTER MANUALLY OPERABLE MEANS MEMBER TO SAID LOCKING LEVER FOR BODILY SHIFTABLE MOVEMENT THEREBY AND FOR MOVEMENT RELATIVELY THERETO, AND MEANS OPERABLE TO MOVE SAID LOCKING LEVER TO SHIFT SAID OUTER MANUALLY OPERABLE MEANS MEMBER ON SAID DETENT MEANS FROM DETENT MEANS ACTUATING POSITION TO DETENT MEANS NON-ACTUATING POSITION, UPON OPERATION OF SAID OUTER MANUALLY OPERABLE MEANS SAID MEMBER BEING MOVABLE RELATIVE TO SAID LOCKING LEVER WHEN EITHER IN SAID DETENT MEANS ACTUATING POSITION OR IN SAID DETENT MEANS NON-ACTUATING POSITION, SAID DETENT MEANS AND LATCH DEVICE

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