US2428401A - Lock construction for door structures and the like - Google Patents

Description

J. A. WALLER Oct. 7, 1947.

LOCK CONSTRUCTION FOR DOOR STRUCTURES AND THE LIKE Filed Oct. 51, 1945 4 Sheets-Sheet 1,

v INVENTOR IOIn %//%/4 ATTORNEY Oct. 7, 1947. J. A. WALLER,

LOCK CONSTRUCTION FOR DOOR STRUCTURES AND THE LIKE Filed 001;. 51,- 1945 4 Sheets-Sheet 2 INVENTOR John a. ll/allez' ATTORNEY Oct. 7, 1947.

J. A. WALLER LOCK CONSTRUCTION FOR DOOR STRUCTURES AND THE LIKE 4 Sheets-Shet 5 Filed Oct. 51, 1945 v INVENTOR Liv/tn a. Mallet ATTORNEY Oct. 7, 1947. J, A, AL R 2,428,401

LOCK CONSTRUCTION FOR DOOR STRUCTURES AND THE LIKE Filed Oct. 51, 1945 4 Sheets-Sheet 4 INVENTOR ATTORNEY Patented Oct. 7, 1947 LOCK CONSTRUCTION FOR DOOR STRUC- TUBES AND THE LIKE John A. Waller, Beverly Hills, Calif. Edla Alfreda Waller executrix of John A. Waller, deceased Application October 31, 1945, Serial No. 625,737

This invention relates to locks and more particularly to locks of the latch type normally used on doors and the like, and has for its principal object to provide a simple, cheaply constructed and efi'lcient lock which is adapted to be unrequired to withdraw the latch from engagement with the striker plate are obtained through this axial movement rather than through the rotative movement customarily employed in door locks of this general type, and this invention is distinguished therefrom in that the movement required according to the present concept is merely such as to render the latch means ineffective, independent of actual withdrawal of the latch from the striker plate, so that the door or the like may then be opened.

One of the particular objects of the invention is to provide a door latch construction having a slidable bolt member carrying a pivoted latch member which is adapted to cooperate with the conventional striker plate on the relatively fixed portion of the door assembly, and means normally fixin said pivoted latch portion against pivotal movement, together with means for releasing the latch member and allowing the same to pivot when it is desired to open the door.

Another object of the invention is to provide a latch construction which is not subject to picking.

A further object of the invention is to provide a very compact lock construction which may be installed in a door member without the use of special tools and without requiring a high degree of skill.

The lock construction of this invention comprises, essentially, an elongated bolt. structure carrying a pivoted latch member at its outer end and adapted to be disposed in a door stile in the conventional manner, together with a latch-release member forming a part of the bolt structure and adapted to cause the pivoted latch member to be restrained in a normal position corresponding to a conventional latch type of structure when the latch-release member is located in a normal position, such latch-release 8 Claims. (Cl. 292-192) member being mounted for movement in response to the lock actuating means (such as the lock handle or knob) and adapted upon such movement to release the latch member and permit same to pivotally retract from engagement with the striker plate which is employed in the conventional relationship,

According to a preferred embodiment of the invention the elongated bolt member is slidably mounted within an elongated housing and adapted both for longitudinal forward and rearward movement with respect to the housing after the manner of the conventional sliding bolt in a lock construction, and for a lateral sliding movement of limited extent in a direction transverse to the length of the bolt member. 00- operating shoulder means are provided on the bolt member and the housing to cause the bolt member to persist in a forward or locked position, in which the latch is positively engaged Within the opening in the striker plate so that the door cannot be opened and so that the latch can not be picked through the expedient of slipping an instrument past the door stop and between the edge of the door stile and the door jamb, and forcing the latch inwardly by pressure along the conventional inclined end surface of the latch. When the door is intended to be opened, it is merely necessary to operate the latch-release member, thus permitting the pivoted latch portion toretract 'to a disengaging position, after which the door may be opened in the conventional manner. In such a construction, the striker plate will be so arranged that the amount of lateral. sliding movement permitted-of the bolt structure when the door is ,latched is restricted to an amount less than that necessary to disengage the cooperating shoulder means which cause the bolt to persist in a lock- ;in position, the full lateral sliding movement of the bolt beingutilized only in the closing operation of the door as particularly brought out hereinafter.

The above and other objects and features of this invention will be brought out in the ensuing description of certain preferred embodiments thereof which are particularly illustrated in the accompanying drawings, in which:

Fig. l is a longitudinal section through a door construction embodying a non-pickable lock according to the present concept;

Fig. 2 is a transverse section thereof taken on line 22 in Fig. 1;

Fig. 3 isa sectional View as-taken on line 33 in Fig. 2;

Fig. 4 is a view corresponding to Fig. 1 illustrating the relative position of the bolt structure 3 upon initiation of an opening movement for the door;

Fig. 5 is a view corresponding to Fig, 4 showing the door in a more advanced stage of the opening movement;

Fig. 6 is a view corresponding to Figs. 4 and 5, showing the relationship of the parts which is established durin a closing operation;

Fig. 7;is an isometric perspective of a bolt tconstruction according to this invention, ofthe type useful for interior doors where the non-pickable feature is not required;

Fig. 8 is a view corresponding to Fig. 4, illustrating a construction Where a bolt of theltype of Fig. '7 is applied;

on line 99 in Fig. 8;

Fig. 10 illustrates the embodiment -shown .in Figs. 7-9, in a view corresponding to Fig.4;

Fig. 11 is an edge view of a door incorporating a lock construction according to this invention, illustrating the-use of -a modified form of handle in -place-of a conventional knob; a

12 isa view corresponding'to Figs. 1 and ;8, illustrating a form of lock; construction which v 215 Fig. 9 1s a fragmentary sect onal v ew-asataken.

would be suitable for use on cupboa-rdd oors and th like; and

Fig. 13-is -a transverse sectional view as taken n line |3 |a in Fig; 12.

Referring to Figs. 1 through 6 of the drawings,

a door stile is fragmentarilyillustrated at l'; tof tending ears or dogs 23 adapted to engage the g ether with an associated door jambZ provided -with-a door stop 3. Within the door stile l the 'l'ockconstruction of the present-invention-is incorporated; and may comprise a tubular elon- 4 gated bolt housing 4 carrying a sliding bolt-5,'

provided; at its forward-end with apivoted lat-ch member I provided with two adjacent relatively inclined camsurfaces 8 and 9,the cam surface '8 comprisingthe locking surface for the normal The bolt 5 is provided with means for engaging M thepivotallymountedlatch member'l, to normally retain this latch member in the position shownin R whe ein e ree w rdl disposed in 'cam facet is disposedin position to engage-the forwardly. directed edge 10 of the opening H in .40 position' of the latchmember on the bolt 5 and a striker plate l2 mounted-upon 'thedoor jamb '2. This last-named means is mounted so as 'tobe movablewith respect to the main bolt structure so that it may be moved out of this position retaining the latch member in full line location jshown in Fi gl and allow thesame to pivot'clockwiseyabout its pivot point Ia and thereby release itself from' engagement [with the striker plate. For this purpose suchineans may comprise a pivotally rncunted latch-release member l3, which is preferably pivotally mountedon the-b,olt 5'"adjacent the rearward end thereof, as at 14, andis normally adapted tcf-lie'along the forward side rw r i th sens of hed qn f m ment of the door I; in the closing operation) of the bolt" 5, 'andiisypreferably biased toward this normal position through the agency of aspring l5 or the like. In this ncrmal'position the-forward end 13a of the latch release member; I3 is caused to bear against a shoulder member 16' on the latch'l.

The sliding bolt member fa rnayrconvenientlybe formed of 'U orchannel'shape, laid on itsiside as may be seen in Fig. 2, and the latch-release I3a and I6 on the respective members. This is -conveniently done by arearward (downward in Fig. 1) lateral movement of the left-hand endoof the latch-release member I3, as by the pivotal movement about the axis defined at M, in any convenient manner. As an example of a suitable ;means of disengaging the latch-release member from the latch I have shown an actuating foot I! mounted upon a spindle l8 connected to the interior and exterior lock-operating knobs l9 and 20. The spindle I8 is adapted to extend through the bolt assembly as through a slot 2la in the forward .wall la of the housing 4, an elongated slot 22a in the forwardwall'of the latch-release member l3, an elongated slot 221) in the rearward wall of the bolt 5, and a slot 2 lb in the rearward .wall of the housings,- the forward slot Zia in the housing 4 being larger in its transverse dimension than the slot- 22a in the member l3 to permit the actuating foot H to extend through the slot Zl'a and into engagement with the forwardly directed wall or web portion of the web member I3 at the transverse edges of the slot 21a. The actuating foot ll may be provided, with transversely exforward wall of the bolt housing 4 to limit the amount of axial movement of the spindle 18,. if desired.

theopenlng movement of the door, assuming the door lock and assembly to be in the condition illustrated in-Fig. 1, the operator pulls rearwardlyon the knob l9 or pushes uponthe exterior knob 26 as'in thedirection'of the arrow in Fig. l, thereby pushing upon the spindle l8 and forcing the actuating foot I! against the forward wall of the latch-release member l3, moving it .to the position shown in Fig. 4, against the biasing action of thespring l5. By this movement of the latch-releasemember, the shoulder I3a at the left hand end of thelatch-release member is removed from engagementwith the shoulder l6 on-the latch member I, and further Leifort on the door knob tending to move the door rearwardly toward an-open position causes the forwardly directed edge l0, of the'striker plate l2 m push against the locking face 8 ,of thelatch member and rotate the latch member clockwise toward the position-thereof shown in Fig. 5. "In this latter position, the locking face 8 of the latch'rnemberlis located in a rearwardly inclined positionso that further effort in opening the door results in a camming action uponthe latch member-whichtends to force the bolt5 rearwardly within-the housing d', againstthe biasing action of a bolt spring-6, until the bolt-is sufliciently retracted't hat the outer end-0f the latch '1;-pass es out of the openi g H in the striker plate 12', whereupon the door may readily be opened. As soon as the latchmember 1 is withdrawn from contact with the 1 striker --p1ate' 2, the 'bolt assembly-resumes theposition 'ofFig. 1 within the bolt housing under the influen ceof the springs 6 and i5, thelatchmmber] being preferablyso constructed in this connection that the portion thereof defining the shoulder 15 acts as cam means which will follow the outer end of the latchreleasemember I 3 and force the same towards thepositicn of-Fig-j 6, wherebyupon release t: t a ch mb r bri s i gnia eiih s n 15 will rotate the latch member I counter-clockwisefto its original position through the intermediate latch-release member. In order to locate the'latch member! in the position of Fig. 1

The particular embodiment of the invention i1- lustrated in Figs. 1 through 6 is of the nonprob able type, and this feature is realized by the provision of cooperating shoulder means upon the bolt housing and the bolt to cause the bolt and Ttheflatch assembly to persist in the position of Fig. 1' until these cooperating shoulder means are disengaged. These cooperating shoulder means maybe provided in any desired location to attain the required results} and I have illustrated an example of such shoulder means as comprising-a lug 26 adapted to enter the slot 220. in the member l3 and to engage the left-hand or forward end 21 of said slot "when the latch-release "member is in its forward position of Fig. 1. The

'outermost or most forward position of the latch "1 and bolt member 5 is determined by a pin 28 secured to the housing 4-sand extending through the slot 22a in the latch member l3 and the slot 22b inthe rearward Wall or web portion of the channel shaped bolt 5, against which the bolt structure may ride under the biasing action of the spring 6. With the lock structure in the position shown in. Fig. 1, inv the event that a person should insert a picking tool through the .space between the striker. plate l2 and the edge of the door, in an attempt to crowd the latch and bolt to the right to release the latch from the striker plate, the slot end 21 will come into engagement with the lug Z Gand effectively prevent the look from being picked. When the latch-release member l3, which forms a part of the bolt 5, is moved into the position of Fig. 4 through the action of the spindle I8and the actuating foot H, the cooperating shoulder members defined by the portions 26 and 21 are brought-out of engagement position, as shown in Fig. 4, thus eliminating restraint upon the inward movement of the bolt assembly.

As brought out above, when the door is open I so as to remove the latch member 1 from engagement with the striker plate l2, the bolt assembly assumes the position of Fig. 1 with respect to the bolt housing 4, and in order to provide for retraction of the bolt assembly within the housing to permit the closing operation of the door to be carriedout, I adapt the forward end of the bolt member 5 for a limited lateral movement away from the forward wall 4a of the bolt housing 4 to an amount sufficient to clear the cooperating shoulder means 26-2'l. This is illustrated more particularly in Fig. 6 in connection with the position of the parts which are adopted as the door is brought toward closing position, as by expanding the bolt housing 4 at the forward end to provide a space 3| at the rearward side of the bolt housing into which the bolt 4 may be moved. A biasing spring 32 is provided to normally bias the bolt 5 against the forward wall 4a of the housing. In the closing operation, when the forward face 9 of the latch 1 is brought against the rearward edgeof the striker plate I2, the first result is to cause a rearward relative 'movement of the bolt assembly with respectto 'the housing 4, into the position of Fig. 6, at which time the end 21 of the slot 22a is brought past-the edge of the lug 26, after which further pressure upon the 'door will cause the bolt assembly to be retracted within the bolt housing against the action of the spring 6 as a result of the c'ammi'ng action of the striker plate upon the face 9 of the latch 1. After the latch has been brought in opposition to the opening II of the striker plate l2, the latch will be pushed through the opening ll by the spring 6, the biasing spring 32 being of sufficient strength to cause the bolt 5 to be forced against the forward wall 4a of the bolt housin when the bolt has been fully retracted and the inclined face 9 of the latch member 1 has been brought out of enga ement with the striker plate. "Doors are normally set so that there is about 5 3 play in the door, that is, that the distance between'the forward edge l0 of the opening in the -striker-"plate is spaced about a r" farther from the door stop 3 than the corresponding position of the locking face 8 of the latch from the 'forward face of the door.

This minor diflerence in spacing is illustrated in Fig. 1 and is apparent from Fig. 4. The amount of interlock between the cooperating shoulder means 26 and 21,

and the amount of lateral movement permitted of the bolt 5 within the housing 4 is preferably materially in excess of this normal clearance of 3%", so that it would be'imposslble for a prowler or the like to urge the door forwardly an amount sufficient to enable the insertion of a picking tool into contact with the inclined face 9 and crowd the bolt 5 rearwardly an amount sufficient to clear the cooperating shoulder means 26 and 21 before the locking face 8 of the latch member enin the art.

Suitable locking means may be provided for preventingunauthorized opening of the :door, and this may conveniently be attained through the agency of alocking lug 33 which is interposed between the bolt 5 and the housing 4 in such manher as to prevent relative movement between these parts sufiicient to clear the cooperating shoulder means 26+2'I or to release the pivoted latch member I. 'This locking lug 33 may conven'ientlybe'provided upon a locking lever 34 pivotally mounted on the spindle l8 as at 35. Suitableme'ans are provided for rotating the locking 'lever34 so .as to move the locking lug 33 into and "out of'position between the bolt 5 and the housing :4, i. e., into and out of the space 36 indicated in .Fig. 2, such as looking ring 31 rotatably mounted within an'escutcheon plate or the like 38 and adapted to engage a rearwardly projecting end portion ofthe locking lever 34, as at 39, adjacent .the. interior knob |9,.and a conventional key or j cylinder lock structure at the exterior knob 20 providedwith an actuating member 40 adapted to engage a forwardly directed portion of the lever 34, as at 4|. 1

In Figs. 7 through 10, I have provided a modified form of look construction suitable for use in an interior doorwherein no provision is made for preventing the look from being picked. In this I Q HJ-D i QZQ FtO: c nstrain-the bol *i oam r iz qnder t il ust a eth sphis formmfgzthe edevice the ameka-arran eme t bf issa t ou filia eb e 1 giS w 113116 .1 13 ifi l l iqver the construction -.of

wFigsi l .fih l shz l-w eh' i reeu re i-bv th fe tent construction of the bolt housing 44' is Ithat at ez inslusj3 ,on'theioc s nlsd ve fi ncense ,tobe disposed between: the rearward edge of; the

ilatch release-member l3 andithe forward-,edgebof athe rearward wallzof the bolt gmember i'i, gas-tat 1 :im i :9 v a w -zbegapnaren Asl s {portion 3b maybe struck downwardly {Tom the upper ange ofgth latch-releasemember 3 zto provide he desired .locl i ng1 sengage nent against ;the, lu g ;for-this purpose. V ;Fig. 10 illustrates i the movement of the latchrelease member -13 to: a;.position-,-such ;as1 .to re- .as the en a em n en he ho lde 3 i n the latcherelease member and-the, shoulder 16 latch 1 out -of the -,-normal flatching ,position is v ;-.indicated insdot-dash lines inrthis-figure, together with ,a dot-dash Vindication eof s-the rnoved position :of the latch member-J 3. :It will be appreciated that the movement of the invention, in which the interior .door; knob has i l {20 -on :the latch and @the rotated ;,.position of -the 53.5 qporating, a :lock -construction accordin -to th s "been replaced by .a;.handle member $46,, which would be threadedly disposedupon the interiorl-y projecting spindle I8 of either of the above :con-

e40 ,,structions and the handle carried downwardly ,to provide 1a depending ,-,portion;-46c which ,is

,loosely attached. td the .door in ;an-y,suitable manner. In the specific-construction .illustratedin all the attachment of: the depending end of ,the handle .46 is provided through the agency iof a .screw 47!.extending throughanopening in the handle and through asmall ferrulelsleeve..48,provided with ra. ,projecting shoulder 49 adapted to retain ,atrim disc; 501m placeagainst tha -door I, ,It wi-llbe, appreciated thatio'rcinterioridoors,

the ,lock construction, represented ,by the arm 34 ,iand lock ring l31 f or.. example, maybe omitted. .In'Figs, .12 and 13 I have illustrated almodified "constructionadapted more particularly for use on I ;ilight structures such as cupboard doors "and the like, which may comprise fa bolti housing 5110f e ally iU-cross section provided withv attach- "ture provided in-the showing of Figscl through -'1-0. A bolt 53 is sli'dably disposed within the hous ing 51, and is provided with a latch-reieasa'mem- --ber 54"pivotally mounted on the bolt member 53 as at 54d-andprovidedwitha biasing spring 55 corresponding to e the spri ngf l fi above. At the *forward .end of the :bolt 53, provide a; pivoted latch member156 corresponding to the latch member #:above'. The'iinne'rz edge time bolt housing 151 is closed through;- the. .agencybf a irictionally doc-fated closing vplate 151 The outer wall of the housing 5| is provided withanopening 58 :through which an actuating :bolt; "59 Lextends, a head 4.260 -;lr;ze ingprovided-.1on-;.theioutergend of the :bolt 591 to E8 Jimitth total movemen s. cto thestructure. A suitabIeislot I provided i h tche :membe re p n n -t9 :the slet 22a in the ,;above described 'gstructuige, s i t-t eed e W ch-a s de -5 a Qffih boltwhead :60 is adaptedtobear in the operation of the-structure. A-.corresponding ,slot' fiz -is ,pro- :vided in the-innerwall of the-bolt53, and an opening-63 iis,provided in, theclosing-plate?! ..through which the .b olt :59 extends,. said bolt .being further :extended' through a; hole 674 in, the. door land a l actuating knob is provided onl-the pmjectingLend of the bolt. ..A lug 15 lo mayibe struck ut of-the outer .wallof the housing ji imposition to engage ,the rearward end of the slot '61 in the latchrelease member v54, todimit Tforward longitudinal movementof the belt .53 past :the desired lpredetermined-positionn ecessary forc cooperation ,between the pivoted -\-latch 56 andthe associated striker-platefifi provided onthe door jamb fi, biasing spring 53a is =provided,rcorresponding to *the sprin 5 ahove,- .to maintain the ibolt rnember ,5.3 ,-inia .forwardly urged position. l H

l hi i with res e The operation of the type of lock lshownfin Fig s. 12 and '13 is comparable .to that ;provided .in the priordescribed'forms oftthe device in that a pull upon the actuating knob-65 will; cause the. shoulders 59a on the :bolt head-BD to engage the 'pi-v oted latch member 5 3;v withdrawing: it .fromsengagement rwithy pivoted latch member $56 :;and allowing the :latter to be rotated clockwise :by engagement withthe. striker plate 56. "Upon-iro- *tation 1 of the pivoted-latch member 56 to a-clock- "wise :position,1the :bolt .53 "will zbet forcedrreare Wardly within :the bolt housing-5|, ,allowing the tip of the latch member 56 to besdrawn fpast the {striker-plate v66. x 4

The above embodiments of this invention are to be considered :asillustrative only, and II do'n'o't choose 'to be limited 'tothe specific details herein set forth, but rather to'the scope :of' 'the sub- 1joine'd claims. Y Y

I claim: r l

1. In a lock construction-for door-structures and the like, 'aboltconstruction-which; comprises: an elongated bolt hous i-ng having an openend; an elongated bolt-member s'lidably mounted in said housing for longitudinal movement, said-bolt -mem bel' being also adaptedior lateral Sli-ding movement at the end thereof adjacent-said-opn end of said housing; spring meansibias i-r g said end of said'bolt member toward one-sideof--said housing into a locking position; spring means "biasing said bolt member longitudinallyin g idi- --ward direction towardsaid-open end of saidhou's ing; limit stop means on said'housing-adapted to engage said-bolt member and constrain the s aine against forward movement beyond afpre-detr- .mined position cooperating shoulder means on said-housing and on a portion of said bolt mem ber adapted for engagementkwith one another when said bolt member is in said locking position, :and adapted to be disengaged up'orimovement of said bolt member laterally; out of' said locking position, said cooperating shoulder meansbeing sitioned'to restrain-said bolt member against S ub- -stantial longitudinal rearward -=m ovjement away from said predetermined position when said bolt member isinsaid locking position; a latch mem- :ber pivotally mounted on said'bolt member at end thereof adj acer t'said open end-ofsai'd housing and normallyproj eating through said open end, the axis of pivotal movement-of 'said latchmernbr being-substantiallynormal-t0 the direction or *1 :eral sliding -movementof said bolt member and 9 transverse to the length of said bolt member; shoulder means on said latch member; shoulder means on said bolt member adapted to engage said latch member shoulder means and constrain said latch member against pivotal movement in one direction and thereby define a first pivotal position for said latch member; a latch-release member pivotally mounted on said bolt member and forming a portion thereof; a second shoulder means on said latch member; shoulder means on said latch-release member adapted to engage said second shoulder means in one position of said latch-release member and constrain said latch member against pivotal movement in the other direction out of said first pivotal position, said latch-release member being pivotally movable to a second position such that the shoulder means on said latch-release member is located out of engagement with the second shoulder means on said latch member; spring means biasing said latchrelease member toward said one position; and said latch member being provided with two adjacent relatively inclined cam surfaces respectively arranged so that one of said cam surfaces is disposed in an inclined position extending rearwardly toward said one side of said housing when said latch member is disposed in said first pivotal position, and the other of said cam surfaces is disposed in an inclined position extending rearwardly away from said one side of said housing when said latch member is moved in said other direction into a second pivotal position.

2. The construction set forth in claim 1, in which the shoulder means on said bolt member forming a part of said cooperating shoulder means is provided on said latch-release member, where- 10 open end of said housing when said bolt member is in said predetermined position; cooperating shoulder means on said latch-member and on said movable portion of said bolt member adapted to interengage with one another when said secondnamed stop means and said movable portion are engaged with one another, to constrain said latch member against pivotal movement in one direc- 1 tion, and to disengage upon movement of said movable portion to a position such as to disengage said second-named stop means; and spring means normally biasing said movable portion toward said one side of said housing.

5. In a lock construction for door structures and the like, a bolt construction which comprises: an elongated bolt housing having an open end; an elongated bolt member slidably mounted within said bolt housing for longitudinal forward and rearward movement and for lateral movement toward and away from one side of said housing at the forward end thereof adjacent said open end; spring means baising said bolt member toward said one side of said housing; spring means biasing said bolt member forwardly; stop means on said housing adapted to engage said bolt mem ber and limit the forward movement of said bolt member to a predetermined forward position; cooperating detent means on said bolt housing and said bolt member to limit the rearward movement of said bolt member away from said predetermined position when said bolt member is in position at said one side of said housing; a latch member pivotally mounted on said bolt member at the forward end thereof and normally projectby upon movement of said latch-release member out of said one position said cooperating shoulder means are brought out of engagement with one another.

3. A construction as set forth in claim 1, said latch member being provided with a cam surface adapted to engage said latch-release member and cause movement thereof beyond said second position away from said first position of said latchrelease member upon movement of said latch member out of said first pivotal position toward the second pivotal position thereof.

4. In a lock construction for door structures and the like, a bolt construction which comprises: an elongated bolt housing having an open end; an elongated bolt member slidably mounted in said housing for longitudinal forward and rearward movement, saidbolt member being also adapted for lateral movement at the forward end thereof adjacent said open end of said housing; spring means biasing'said bolt member toward one side of said housing at said forward end; spring means biasing said bolt member forwardly; stop means on said housing adapted for engagement with said bolt member and limit the forward'movement thereof past a predetermined position; stop means on said housing adapted to engage a portion of said bolt member and constrain the same against substantial rearward movement away from said predetermined position, said portion of ing through said open end of said housing; a movable latch-release member on said bolt member and provided with shoulder means adapted to engage said latch member to constrain the same against pivotal movement in one direction whensaid latch-release member is in a normal position, said latch-release member being movableout of said normal position to release said engagement;

and means biasing said latch-release member to- 1 Ward said normal position.

6. A look construction for door structures and the like, which 'comprises: an elongated bolt housing having an open end; an elongated bolt member slidably mounted in said housing for longitudinal movement, said bolt member being also adapted for lateral sliding movement atv the end thereof adjacent said open end of said housing;

spring means biasing said end of said bolt member toward one side ofsaid housing into ,a locking position; spring means biasing said bolt member longitudinally in a forward direction toward said A open end of said housing; limit stop means on said housing adapted to engage said bolt member and Iconstrain the same against forward movement.

beyond a predetermined position; cooperating shoulder means on said housing and on a portion of said bolt member adapted for engagement with one another when said bolt mem-ber is in said locking position, and adapted to be disengaged upon movement of said bolt member laterally out of said locking position, said cooperating shoulder H means being positioned to restrain said bolt memsaid bolt means being mounted for movement with when said bolt member is in said locking position; 7 a latch member pivotally mounted on said bolt member at said end thereof adjacent said open end of said housing and normally projecting ber against substantially longitudinal rearward movement away from said predetermined position through said open end, the axis of pivotal movement of said latchmembe'r being substantially normal to the direction of lateral sliding move r 1 1 ment of said bolt member and transverse to the lengthier :saidi boltnmember shouldenmeanson said .latchsmember eshoulderr-rneansen said doolt memberadaptedito engage said latoh' member shoulder -meanssand -constrainsaid- -=latch membersagainst pi-votalw movement in rena direction and thereby, define afirst-pivtal--position --for said latch member; a-latch-release membenpivotallymountedon said bolt member and forming a. :portion thereof a-second-shouldermeans on saidlateh member; shouldeiivrneans-on said-latchrelease member adaptedto eng-age said second shoulder. means inone position of said l-atonrelease member and constrainsaid latchmember against pivotal movement in -the other direction out of-said first-i-pivotal position, said latch-release memberbeing pivotally -movable to-a*secend position such" that the shoulder meanson said latch-releasermembenis located out of engagement. withatherseeondfishoulder means on said latch member; manually operable meansextendingexternally of the bolt and bolt-heusing structure and adapted for engagement with said latch-release members to move the same out-ofsaidkone position in -response to a thrust on-said means inthedirectionof =opening-movementofthe .door a structure with which "said bolt= member is associatedgi-spring means: Jbiasingsaid --latoh release member tow,ard-said one -position and saidlatch. member being provided with two adjacent .-relatively inclined loam-"surf aces adaptedto cooperate :with a striker plate associated-with said door structure and respectively -arranged so that one otsaid cam surfaces-is-disposed in an inclined position extendingrearwardly--toward said-one side ot said housing when-- said-..-1ateh said: latch-member is movedin-said ethendireetion into':asecond .pivotal'-position=- 7, A-lock construction-for door-structures an the like, which comprises: an elongated bolthousing mounted on a movable-door-and-=havingon end opening throughthe-doorv stile at the edgeof such door, a bolt member slidably mount edi-iin; said housing for longitudinal movementiniforwardl and -rearward directions-with respect tosuchsopen end: of said housing; ,said -bo1t mem ber being disposed substantially normal to the direction of movement of-said-door--andto the movement'in the other direction out of said first pivotal position or saidlatch'memben said latchrelease member being-pivotally movable to a secondposition to cause disengagement t hereoffrom said-second shoulder means on-said -lateh-member;spring:meansbiasingsaid-latch-releasemember. toward a said one position ;-manua yoperable means carried-bysaiddoor and mounted for bernbeingialsovadapted fon-limited lateral sliding movement inithel direction oifiopening-movement ofsaid door atthe forwardopen end ofaid bolt housing; spring means biasing said bolt memberintoha, lockingposition against one side of-said1 bolt housing. in the direction of forward movemerit 'of said 'doorduring a door-closingbperatlon; spring means biasing said bolt member iorwardly within said housing; stop-means on said housing cooperating with said bolt -member to limit the forward movement thereof to apredetermined forward position; cooperating shoulder means on' said .h'ousing' andsaid bolt memberadapted for engagement with one another-when- 0i pivotal :movernent qr said latch; m m...

' faces arerespectively'adapted-to-cooperativelyen movement in-the direction of rearward movement of said door duringedoor-opening operation said last-named -means cooperating with said latch release member to cause movement-thereofr'out means said latch-member being provided with rtwo-relatively mclined; iorwardly projecting canr 'sur-faces=respectivelyarrangedso that *oneof said cam surfaces is disposeddn an inclined position extending rearwardly with? respect -tosaid bolt member toward said; one side ofsaid housing and V the other of -said -cam surfaces is disposed-sub:

stanti-allyparallel tosaid bolt member, when said such as to cause said other cam Slll'fflCE'ttWIE disposed in an inclined position extending rearwardly wi-th respect to said 'bolt member toward gage-'a st-Biker plate-associated with-' the -ldodr" structureimme closingand openingmovementssaid -latch-release member 'b'eing movable-with said -bolt member durin'g--said'limitdtransvers" movement ofsaidbolt-member; aiidbeing, adapted for movement out -df*said=-orre positibn independ-" ent of suchlimited' late'ratmovement, 'aiifthe' shouldepme'ans on-said bolt member whichforms apart of saidcooperating shouldermeans being" provided; on said- -latch releasee member," wher'e by; disengagement" of 'saidcooperating 'shoulder means isobtainedupon movementof said releasemember -out'of said one position; V-"

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