US2301221A - Lock - Google Patents

Description

Nov. 10, 1942. R. MARPLE LOCK Filed oct. 2o, 1938 2 sheets-sheet 1 2z v I 4 /4'4 54 l (aff 4/ ifi? @J0 g3 J2 w/ i |1732 ll I I I l I r IN VENTOR Falla )741;22?.

TORNE YS.

R. MARPLE Nov. 10,` 1942..

LOCK

2 Sheets-Sheet 2 Filed 001,. 20, 1938 l, 4f' zk T.. N N

vm my T f La Z l d, F w `ma.

Patented Nov. 10, 19,42

UNITED STATES PATENT OFFICE cock Manufact uring Company, Jackson, Mich..

a corporation of Michigan Application October 20, 1938, -Scrlal No. 235,982

' tiled of even date herewith.

The principal objects of the present invention Aareto provide an improved latch oi the above generally indicated character, particularly adapted for. but not limited to, use in connection with vehicle doors, characterized as being simple in construction, economicalof manufacture, and extremely durable 'and eilicient in operation; to provide a latch of the rotary bolt type, embody.

c ing an improved actuating connection between the inside and outside door operating handles and the bolt actuating means; to provide a latch oi the rotary bolt type embodying improved means operable from within the vehicle for locking the inside and outside handles against actuation; to provide improved means actuated by the bolt for releasing the locking means;` to

provide a door latch embodying improved means for supporting an actuating spindle in relation to the latch casing; to provide a door latch embodying means for wedgingly retaining the spindle against rattling, and including spring means for urging the handle to a predetermined position; and to vgenerally improve the construction and operation of vehicle door latches.

With the above as well as other objects in view, which appear in the following description and in the appended claims, a preferred but illustrative embodiment of the invention is shown in the accompanying drawings, throughout the several views of which corresponding reference characv the linev 3-3 of Fig. 2;

Fig. 4 is a view in elevation, taken along the line 4-4 of Fig. 2;

Figs. 5 and 6 are comparativevviews, Fig. 5`

being a view taken along the line 5-5 of Fig-4; Fig. 7 is la view in vertical section, taken along the line 1--1 of Fig. 4;

(ci. :sz-21e) Fig. 8 is a detail view in section, taken along the line 8-8 of Fig. 6;

Fig. 9 is a detailed fragmentary View, taken along the line 9 9 of Fig. 8; and

Fig. 10 is a comparative view, illustrating-the parts shown in Fig. 4, but with the locking cams in the retracted position thereof.

The improved latch. which is secured within -the door 20 ot the associatedvehicle, .comprises generally a casing member 22; a rotary bolt 24; a plurality of cams designated collectively' as 26, for holding the bolt against rotation in a dooropening direction; an outside operated rollback means, designated asa Whole as 28, for releasing the cams 26 and the bolt 24 in response to movement of the conventional outside handle; `and a retracting member 30, which may be connected to the conventional inside door handle or the like (not shown), to release the cams 25 from operative engagement with the bolt. The keeper 32, which is described in more detail below, is suitably securedto the door pillar 24, as by means oi brackets 38.

The bolt 24 is rotatably journaled in the latch casing upon a pin or trunnion 40. One end oi `the pin 40 is supported in the flange 42 of a bracket 44, which is suitably secured, as by welding, tothe flange 45 of the previously identiiied casing 22. The other end of the pin 40 is supported in a supplemental casing member 48, which is suitably secured to the inner lace oi the flange 46.v The boltl 24 is formed to provide a keeper-engaging portion 50, which projects externally of the lock casing 22 for cooperation with the keeper 32; an inner or cam-engaging portion 52; and a separating iin or vane 54, which is somewhat larger in diameter than the portions 50 and 52,v and serve to substantially close the- 1 opening 55, which is provided in the iiange 46 of the casing 22 to accommodate the bolt. The

of the bolt 24 is substantially enclosed by the previously mentioned bracket 44, which is given a substantially semi-cylindrical form ior this purpose. v

As most clearly'appears in Figs. 3 and A7, the outer portion of the bolt 24 is formed to'provide a plurality of radially extending equiangularly spaced keeper-engaging teeth or projections 50 50a, any one vof which is, effective, as described hereinafter, to cooperate with the safety catch V60 associated with keeper, or the keeper portion 62, to hold the doorin either the partially 4closed or safety position, or in the fully closed position, re-

spectively. It will be appreciated that the anlower half of the outwardly projecting portion Silv gular spacing between the-projections or teeth 50a relative to the spacing between the safety catch 60 and the keeper portion 62, is such that the bolt 24 can roll over or cross the keeper in a manner similar t the cooperation between a gear and a rack.

As most clearly appears in Figs. 4, 7 and 10, the inner portion 52 of the bolt 24 is formed to provide a number of dog-engaging teeth or projections 52a, the number and angular spacing between which corresponds to the number and angular spacing of the keeper engaging teeth 58a. The teeth 52a, however, are angularly displaced from the teeth 50a. This relation results in reducing the space requirements for the lock, since the positioning of the cam can thus be determined independently of the rotative position of the teeth 50a. Each tooth 52a is formed to provide a generally radially extending cam-engaging portion 64 and a locking portion 66, the purpose whereof, is described hereinafter.

The cams 26 are provided to cooperate with the latching portion 66 of the bolt 24 to hold the bolt 24 against rotation in a clockwise or dooropening direction, as viewed in Figs. 3, 4 and 10. It is preferred to utilize a plurality of such cams of progressively increasing length, to provide a take-up action for the latch, as hereinafter described. In the present instance, three cams are illustrated, although a smaller or larger number may be utilized, if desired.

The three cams, designated as a whole at 26, are rotatably supported in the lock casing uponla pin or trunnion 10, which extends parallel to, but spaced from, the previously mentioned bolt supporting pin 40. The outer end of the pin 10 :is supported in a member 12, the inner flanges 14 whereof are secured -to the inner face of the casing flange 46, and the outwardly extending body portion whereof serves, as most clearly appears in Figs. 3 and 7, as a dovetail member. 'I'he inner end of the pin 10 is supported in the previ- -ously mentioned supplemental casing member 4&8.

EachA of the three cams, which are individually designated as 16, 18 and 80, includes a downwardly extending body, which terminates in a laterally offset foot. the `cam'18, and the cam 18 in turn is slightly longer than the cam 88. Each of the cams 16, 18 and 80 is provided with a biasing spring 82 individual thereto. One end of each spring is secured between a pair of lugs 84, which are inwardly struck from the casing flange 46, and the free end of each spring 82 bears against the edge of the associated cam and so continuously urges it in a counter-clockwise or locking direction, as viewed in Figs. 4 and 6.

The outside rollback, designated as a Whole as 26, embodies an improved arrangement which is susceptible of general application, but finds particular utility when utilized in connection with a lock of the present character. The illustrated arrangement is disclosed and claimed in applicants copending application Serial No. 460,712, led October 5, 1942, as a division hereof. In the illustrated instance, the outside rollback 28 comprises a pair of rollback members 21 and 29. 'Ille rollback member 29 is provided with an axially extending boss 3 l, which is received and rotatably journaled in a corresponding opening provided therefor in the lock casing 22. The companion rollback member 21 is provided with a corresponding axially extending. boss 33, Which-seats within a complemental recess formed in the face of the companion rollback member 29. In ac- The cam 16 is slightly longer than' cordance with the arrangement disclosed and claimed in Patent No. 1,895,893, granted to Raymond G. Moore, and assigned to the same as- :signee as the present application, the rollback members 21 and 29 are provided with squared turned and passed through registering and corre- "and 29 into alignment with each other.

spondingly positioned openings such as 39 provided therefor in each of the rollback members 21 and 29, as most clearly appears in Figs. 8 and 9. The turned portion 31 thus urges the members 21 'The other end 39 of the spring 35 extends downwardly and, as most clearly appears in Fig. 4, is hooked into an opening provided therefor into the supplemental casing member 48. The spring 35 thusv continuously urges the rollback members 21 and 29 in a counter-clockwise direction as viewed in Figs. 5 and 6, and, except when these members are actuated by rotation of the spindle 88, holds the inner rollback member 29 in abutting relation to the upper wall of the just mentioned supplemental casing member 4|. A movement of the rollback 28 winds up the spring 35, and thus renders it effective to apply a substantial restoring force thereto. At the same time, the spring 35 urges the other rollback element 29 in the same direction, tending to bring the two elements into alignment with each other, which action, however, tends to angularly offset the squared openings therein with respect to eachv other, and so wedges the spindle 88 between the two rollback members 21 and 29. This action, as well as serving to retain the outside handle in the normal elevated position shown in Fig. 1, also effectively prevents rattling thereof.

The rollback members 21 and 29 and the spring 35 are held in the assembled relation shown in Fig. 8 by a supplemental casing member 4l which is secured to the base 86 and the case plate. The

the previously mentioned locking cams 26, as

hereinafter described.

The member 38 is pivotally supported upon the base 86 of the casing 22, by means of a pin IDD.

One end of the pin |00 is mounted in the base 86 of the casing22, and the other end thereof is supported by the previously mentioned supplemental casing member 4I. One end |82 of the member 38 is adapted for connection to conventional link rnechanism (not shown) which may extend to an inside door-operating handle. The member 36 is also provided with a foot |04, which normally bears against a foot 94 associated with the cam 88. In order torender the cams 16 and influenced by /the just mentioned foot Il provided thereon, the'cam Il isprovided with a laterally turned portion III, which extends around and behind the rear edges vof the cams 1I and 13.

With the Just mentioned arrangement, it will be appreciated vthat clockwise rotation 'of the member 30, as influenced either by the outside `roll-- back 28, or by suitable actuation of .the inside handle (not shown), causes the foot |34 on the member 30 to bear downwardly upon and cause downward movement of the footy Il. which action in tum causes all of the cams 1I. Il and 33 to move in a clockwise direction, from the locking position showninFig. 4, to the unlatched position shown in Fig. 10, This movement of the cams releases them from the bolt 2l. and permits the` latter to be rotated in a clockwise or door-opening direction. Upon releasing either the outside rollback 2l, or the inside handle (not shown), however, vthe spring Il associated with the member 30 becomes effective to rotate the latter in a clockwise direction,- aa viewed in Figs. 5 and 6, to the normal latched position thereof, shown in Fig. 6. This action renders the vspring 32 associated with-the cams effective to rge them in acounter-clockwise direction, as

`viewed in Figs. 3, 4 andlO, to the normal latch-y ing position, shown in Fig. 4.

Referring particularly to Fig.3, the keeper 32 comprises a body, which may be and preferablyA is formed as a relatively heavy metal stamping, and. which is formed to define Ithe previously mentioned bolt-engaging surface I2. The previ-vv ously'mentioned safety catch t0 is andymay be formed of a die casting or the like, and is pivotally supported by a pin I il, which .extends between and is supported in the opposite side walls of the keeper 32. lAspring ||3 is connected between the catch 8|)v and the keeper body, and continu'ously rges the safety catch 60 to the activeposition shown in Fig. 3. It will be noted that tive. In the iilustratsed instance, this locking mechanism -comprises'an abutment, constituted by a roller member |33, the reduced endswhereof are disposed to ride in registering slots suchas |32'formed in the base 33 ofthe casing 22 and in the casing member. 4|.' 'In the retracted position of the locking miler |33, shown in Fig. 6,

it is positioned out of the path of movement of the member 3|, and-consequently does not interfere with the normal movement thereof. When, however, the roller is moved downwardly to the locking position shown in-Fig. 5, it occupies a position in blocking relation tothe extension |34 of the inside link 3l, and positively prevents rotation thereof iin a counter-clockwise or doorunlocking direction.

In the illustrated instance, the roller |30 is arranged for control by a rod |36, which may extend upwardly from the lock body within the vehicle door 2l, and terminates in a button 38 which projects slightly through the garnishA mould 20a associated with the ,door 20. The link |38 is normally retained in either the locking or the unlocking position, by means of a spring |40, which is suitably-securedto the flange 8B voi the casing 22, and the free end |42`whereof is angu lariyformed. With this relation, it will bel'apprethe unlocking position.

ciated that the spring I iseeil'ective tol yieldingly hold the roller |3|Ifinv either thelocking or I diillculty which might otherwise result from the locking button |32' being moved. to locking position while the door is open, and the door there-- after closed. Buch a closing action under these circumstances would, of course, prevent access to the car through the door-'in question. In the present instance, the just mentioned release is` the otherwise continuous body of the keeper 32 is cut away, as indicated at III, to afford a slot `or opening through which the, safety catch il may move from the active position shown in Fig.

3, to a retired position. It will also be noted that the back ofthe safetycatch l0 abuts the portion .l lil of the body of the keeper 32, so that such porv tion ||9 forms a limit stop to the rotation thereof under the influence of the spring Ill. i

Also, as clearly appears in Fig. 3, when the door in a closed position, the keeper32 is in a position between the rotary bolt 24 and the previously mentioned dovetail member 12. The-upper surface of the keeper v32, as well as the under Isurface of the dovetail member '|2, arey downwardly inclined in the direction of the door-closing movement. `With this relation, the dovetail member tends to serve as a stop to the movement of the keeper 32 in the leftward or doorclosing direction, as influenced by the bolt 2l.

' 'I'he members 24, 32 and 12. accordingly, function in accordance with the functioning of the usual separately `formed dovetails usually associated with locks of the. conventional siidable bolt. type, and permits such separate dovetail structures to be dispensed with. l

In accordance with the present invention, locking means are provided for theinside kand outside actuating mechanisms, which may be operated between a retracted position permitting free movement ofthe actuating mechanisms, and a locking position, in which both the inside haneilected` by an additional pivotally mounted link I, which is carried by the previously mentioned pin |00. The link I is provided with a nose |46 which is positioned in the, path of movement of the locking roller |30, and an additional foot |48, which is positioned in the path of the foot 94 associated with the locking cams 18, 13 and 30. With the parts occupying the parts shown in Fig. 5, ltuvwili be recalled that the retracting member 33V is locked against a retracting movement. The cam foot 34 is, however, free to move downwardly through a normal unlocking movement. Such a movement, caused, for example, by closing the door 2l, enables the foot 84 to cam the foot I downwardly, swinging the nose |48 in a counter-clockwise direction.

vThe counter-clockwise movement of the nose I cams the roller |33 upwardly far enough to bring it past the angular portion of the spring i, thus rendering this spring effective to force the locking roller |30 to its fully elevated position, shown in Fig. 6. The downward movement 4of the cam foot 34 as influenced by a. closing movement ofthe door, Vbrings the link i to a position intermediate that shown in Figs. 5 and 6, in which the cam Anose |46 thereof extendxsyacross the path of theroller |30 but vdoes not block downward movement thereof. Accordingly, following the closure of the door as just described, the miler |30 may again be forced downwardly tothe locking position, by operaltion of the inside button |33. 'dleandthe outside handle are rendered `ineec- 75 The lowering movement of the cam foot 94,

rotate the bolt 2l in a counterclockwlse direction, as viewed in Figs. 3, 4 and 6. During such movement, a leading face 84 of an inner bolt tooth 52a bears against the rear edges of the cams and turns these cams to the position shown in Fig. 4 to positions shown in'Flg. 10.

When the door reaches a substantially closed position, the Just mentioned inner bolt tooth face 64 passes beyond the heel of the shorter cam 80, permitting the latter to ride up over the rounded ends of the ycam engaging bolt face corresponding to those 66. As soon as this action takes place, the

. 5' tracting member to effect said movement thereof, and means adapting saldretractlng member for operation from within the closure for eiecting said retracting movement oi' said retracting member.

2. In a latch for association with a closure l member and a supporting member, the combination oi' a rotatable bolt carried by one of said members and rotatably cooperable with a keeper carried by the other of said members, holdingv means normally urging said bolt in a rotative' direction sothat it cooperates with said bolt to hold said closure in a closed position, said holding means being retractable by a rotation of said bolt, a pivotally mounted retracting member carried by said one of said members, and operable to release saidholding means from said bolt so as topermit an opening movement of said closure, handle operated means operable to control said retracting member, locking means operable to prevent a retracting movement Q said retracting membenand a release' member actuable as-a consequence of a release movement vof said the fully closed position of the door, to occupy the full blocking position described with reference tocam 80.

Reviewing the looking relations, it is noted that the inside locking means comprising` the roller-| may befmanually moved at any time from the lower locked position, fshown in Fig. 5, to the upper unlocked position, show n in Fig. 6,

' and that this mechanism is yieldably retained by the spring |40 in either of these two positions. When in the lower position, the roller |30 blocks rotation of the retracting member 30 and'so ren-` ders the outsiderollback mechanism ineiective.

'I 'he inside handle mechanism (not shown),

which is disposed to be connected to the part |02 of the retracting member 30 is correspondingly rendered ineiective. A closing movement of the door, ,which causes a retraction of the holding cams 26 and a corresponding downward.

movement of the foot M (Fig. 5) servesto ro-i tate the lauxiliary-link IM and release the lock- Y ing mechanism, if previously set in locking position to the unlocked position, shown in Fig. 6.' The outside locking mechanism comprisingthe. 'slide |60 is selectively adjustable to lock the retracting member 30 against' movement, so that the door maybe side thereof.

From the foregoing, it will Vbe appreciated that the present inventionprovides an extremely effective and door 'lock structure, which is simpleA and' economicaloi manufacture, and lwhich is exceptionally efilcient andsatisfactory in operation. It will alsobe appreciated that the speciflcally described embodiment is illustrative and that various modiicatlons inthe form, number j and arrangement ofthe described parts may be made within the spirit and scope of the invention.

' What is claimed ist' l. In a latch 'for association with a closuref member and a supporting'member, the'combinapositivelylocked `from the 'outholding mans by said bolt `for releasing said locking means. f l

3. In a latch for associationwit h a'vclosure `member and a supporting member, thefcombina- 1 vtion of 'apivotally mounted'boltcarried@ byfonjeY of said members for releasably engaginga lkeeper carried by the other of saidmeniber's, springload.- yed cam means' disposed to normally yurgefsa'd f bolt into engaging relation with said'keeper, a

pivotally mounted retracting member? carried by lease said cam means from `said bolt, outside ope?" ated rollback means engageable with saidretracting member to eilect said "movement thereof, means adapting said retraoting--member for oper.

ation from within the closure for effecting said reti-acting movement of said retracting member,

a guidably supported locking member movable from a retracted position to a locking position in which-it blocks movement of said retractlng member, and a plvotally mounted release member engageable by said cam means for restoring said locking member to the retracted position.

4. In a door latch, a multiple armed rotatable bolt, pivotal means having an operating lug and an yarm movable into and out of a position between adjacent arms of the bolt for restraining the bolt from. rotating, inside and outside operators, means actuated'by said operators and engaging said operating lug for moving the arm of 'said pivotal means out of its restraining position,

a singlecontrol device movable into a position to engage the means actuated .by said operators for f holding the same against movement so that-the operators will be ineffective to move the lpivotal ,means out of its restraining position,and means operated by the slammingof the doorrto move the 4single control device tion.

out ofl its holding posi- 5. In a door latch,l a multiplearmed rotatable bolt, pivotal means having an operating lug and anl arm movable into and out of a position between the arms of the bolt forrestranng the tion of a pivotally mounted bolt carried byl oneA of said members for releasably engaging a keeper carried by the other of` said members, spring loaded, cam means disposed to normally urge said bolt into engaginggrelation with said keeper, a pivotally mounted retracting member carried by said oneof saidmembers and swingable'to release said cam means'from said'bolt, outside opf erated rollback means engageable withsaid 'rebolt from vrotating and normally held in its restraining position by spring means, inside and outside operators, means actuated by said inside and outside operators and engaging said operating lug for moving the arm of said pivotal means out of its restraining position against the force of the spring means, a single reciprocal control member movable into a position to engage the `,means 'actuated by said operators for holding'` the same against movement so that the operators will be ineffective to move the pivotal means out `of its restraining position, and means operated by the slamming of the door to reciprocate the control member out of its holding position.

6. In a door lach, a multiple armed rotatable bolt, pivotal means having an operating lug and an arm movable into and out of a position be `tween arms of the bolt for restraining the bolt from rotating, inside and outside operators, means actuated by saidinside and outside operators and engaging said operating lug Vfor moving the pivotal arm of said means out of its restraining position, a single control device movable into a position to engage the means actuated by said operators for holding the same against movement so that the operators will be ine'ective to move the pivotal means out of its restraining position, and pivoted cam means engaging the operating lug of said restraining means operated by movement of the bolt and the bolt restraining means upon slamming of the door for moving the single control device out of its holding position.

7. In a latch for association with a closure member and a supporting member, the combination of a movably mounted bolt carried by one of said members for releasably engaging a keeper carried by the other of said members, holding means arranged to normally urge said bolt into engaging relation with said keeper, a retracting member movableto release said holding means from cooperative relation to said bolt, inside and outside operators, a rst member responsive to said inside operator and a second member. responsive to said outside operator, means operatively associating said rst and second members with said retracting member so as to enable said operators, respectively, to so move said retracting member, and locking means selectively movable between a retracted position and a position in which it renders said both inside and outside operators inenective to so move said retreating member.

8. In a latch for association with a closure member and a supporting member, the combination of a movably mounted bolt carried by one of said members for releasably engaging a keeper carried by the other of said members, holding means arranged to normally urge said bolt into engaging relation with said keeper, a retracting member movable to release said holding means from cooperative relation to said bolt, inside and outside operators, a rst member responsive to said inside operator and a second member responsive to said outside operator, means operatively associating saidrst and second members with v said retracting member so as to enable said operators, respectively, to so move said retracting member, locking means selectively movable between a retracted position and a position in which it renders both said inside and outside operators ineffective to actuate said retracting means, and means operated as an incident to a closing movement of said members for restoring said' locking,

means to the retracted position.

9. In a latch for association with a closure `member and a supporting member, the combinainside and outside operators comprising a first member responsive to said inside operator and a second member responsive to said outside operator, means operatively associating said first and second members with said holding means so as to enable said operators,'respectively, to release said holding means from cooperative relation to said bolt, said mechanism further comprising means operated as an incident to a closing movement of said members for restoring said locking means to the unlocked condition.

l0. In a latch for association with a closure member and a supporting member, the combination of a movably mounted bolt carried by one of said members for releasably engaging a keeper carried by the other of..said members, holding means arranged to normally urge said bolt into engaging relation with said keeper, inside and outside operators, a rst member responsive to said inside operator and a second member responsive to said outside operator, means for operatively associating said rst and second members with said holding means so as to enable said operators, respectively, to release said holding means from cooperative relation to said bolt, and a single control device normally in a position in which it is ineffective but adapted to be moved into a position in 'which it renders said inside and outside operators ineffectiveto so release said holding means.

ll. In a latch for association with a closure member and a supporting membenthe combination of a movably mounted bolt carried by one of said members for releasably engaging a keeper carried by the other of said members, holding means arranged to normally urge said bolt into engaging relation with said keeper, inside and outside operators, a first member responsive to said inside operator and a second member responsive to said outside operator, means for operatively associating said iirst and second members with said holding means so as to enable said operators, respectively, to release said holding means from cooperative relation to said bolt, a single control device normally in a position in which it is ineffective but adapted to be moved into a position in which it renders said inside and outside operators` ineffective to so release said holding means, means for releasably holding the control device in each of said positions, and means operated as an incident to a closing of said closure member for moving the control device into its normal position.

l2. In a latch for association. with a closure member and a supporting member, the combination of a movably mounted bolt carried by one of said members for releasably engaging a keeper carried by the other of said members, holding means arranged to normally urgesaid bolt into engaging relation with said keeper, inside and outside operators, a first member responsive to said inside operator and a second member responsive to said outside operator, means for operatively associating said rst and second members with said holding means so as to enable said operators, respectively, to release said holding means from cooperative relation to said bolt, a single controldevice normally in a position in which it is ineffective but adapted to be moved into a position in which it renders said inside and outside operators ineilective to so release said holding means, means for releasably holding the control device in each of said positions, said holding means being movable as an incident to a closing movement of said closure member, and

means operated by said movement oi said holding means for moving the single control devicelinto its normal position.

13. In a latch structure, -a movably mounted bolt disposed to vengage a keeper, a movably mounted holding member disposed to urge the bolt into holding relation to the keeper, latch operating means comprising a movably mounted rollback, an intermediate member coupled between the rollback and the holding member in such relation that a retracting movement of the rollback is transmitted to and causes a retracting movement of the holding member, locking mechanism comprising an element movable into direct blocking relation to said intermediate member so as to prevent said rollback from so retracting said holding member, and means rendering movement o! `said holding member effective to restore said locking mechanism to its unlocked condition.

14. In a latch structure, a movably mounted bolt disposed to engage' a keeper, a movably mounted holding member disposed to urge the bolt into holding relation to the keeper. latch operating means comprising a pivoted lever operatively associated in such relation that a pivotal movement of the lever retracts the holding member out of cooperative relation to the bolt, locking mechanism for rendering the latch operating means ineiective, and a reset-ting lever pivoted co-axially with said first mentioned lever, said resetting lever being responsive to a movement of said holding member for restoring said locking mechanism to the unlocked condition.

ROLLO MARPLE.

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