US2330011A - Door lock - Google Patents

Description

Sept 2l, 1943 w. R. scHLAGx-z y 2,330,01

DOOR LOCK Filed May 26, 1941 2 Sheets-Shget l 46 45 a 5" 23.49 O 2438 n Z0 l: lll 56 A y, 2 za #8c 5 y W u I Y Sept 21 1943 w. R. scHLAGE 2,330,011

DOOR I OCJK` Filed May 26, 1941 2 Sheets-Sheet 2 l A TTORN Patented Sept. 21, 1943 rumen STATES d DOORLOCK';` Y,

'Walter R. sewage', Burlingame, Calif; assigner". toV Schlage Lock Company/San Francisco,

Calif., a. corporation of California application May 2c, 1941, serial No. 395,192 o '4 Claims'. (ci. 292-169) Thisinvention relates "todoor locks, and especiallyto improvements onlthe 'structure disclosed j in myl former Patent No; 2,062,766, entitled Door Llock,". issued December 1, 1936.

y In thepatent above referred toa vdoor lock is disclosed which embodies a housingand 'a retractor :plate slidablymoun'ted in the housing to extendor retract a latch bolt.'v 'Aspindle is yjour- -naledin and extends through the housing and 'an opening formed in the retractor plate, and

fon' rthe spindle is a rollback member which engages the retractor plate; and rearwardly ofthe rollback is a slot into which a portion of the reytractor plate extends. This portion of the 'retractor plate forms an interlock with the'spindle and secures the spindlefagainst endwiseremoval y 'from `the 'housing during al1 normal operations yof the'lock. `A stop member carried bythe retractor plate .prevents disengagement y of 'the interlock, but the stop memberrnay --be vmanually lreleased, and the'retractorplate mayrthus be `moved to a position beyond a normal retracted f position to release the interlock vand thereby permit removal of the spindle.

The object of the present vinvention is gener` ally to improve and simplify the construction and operation of door locks of the character described,

"and particularly to provide an improved form of stop member carried by the housing, whereby the interlock'between the retractor plate and the spindle may be automatically retained during 4all normal operations of thelock and manually released when removal ofthe spindle is required.

The invention is shown byway of lillustration in vthe accompanying drawings, inwhich Fig. 1 is e, horizontal longitudinal section of the door lock showing it mounted in a door;

Fig. 2 is a vertical longitudinal section showing the lock mounted in a door;

' Fig. 3 is a section similar to Fig. l, showing "the latch bolt B manually forced inwardly beyond a normal retractedposition to permit removal of the spindle;

` Fig.' 4 is a perspective view of the door lock housing, said view being partially broken away and partially in section; Y

Fig. 5 is a perspective view of the U-shaped frame forming apart of thelock housing;

Fig. 6 is a perspective view of the latch bolt B and the retractor plate b1 to lwhich it is atl tached;

Fig. 7 is a perspective viewV of the head member secured to the rear end of the retractor plate;

Fig. 8'is a perspective View of'a dogging membercarried by the head shownin Fig. '7; f

Fig. 9 is a perspective view'of a stop member; Fig. 10 is a'perspectiveview"ofa spindle; Fig. 11` is a'perspective'view ofran'actuator;

Fig. 12 is a perspective` View of `a key'actuated tumbler-cylinder. .i :L f Referringto the drawingsindetail, and particularly to Figs. 1, 3, 4 and 5; A indicatesta-portion of a door to which yis suitably secured a lock housing consisting of two side platesZ/and, which are joinedA at" their?. outer endsbyiaface plate 4. Secured between the plates'2 `and-3`of the lock housing isla U`shaped frame (see Fig'.v"5)` consisting of upper and lower'horizontally' ex tending arms 5 and 6 which 'are connected at the rear ends by an end bar 1. nThe forward ends are provided with righteangula'rly bent lugs 8-8'and 'they are secured to the "-face plate '5" by rivets,

is best Shown' in Figs. 1,j2`, e 'and 6,11-, is at'- tached to a vretr'actor plate generallyrindicated at 'b. `This plate isl rectangular in shapeandh'as two projectingr edges lll-lil 'which extend linto guide slots "I l-H Vf'orrned'inr the* arms 5 and ll of the U-shapedjframe. `An elongated opening "I2,is formed intherplate, and rearwardlytheeof ahead memberA lillvwhich is notched asfaitlto straddle a bar which willhereinafter be referred to as Vthe actuator., The," head' 14, which 'is U-shapedin cross ysect'i'onisee.Figfll, is riveted or otherwise secured-'to the retractor Yplate and it forms, a pair of shoulders` IB-.IG are adapted to be engaged by a rollback memer hereinafter ,to be described...

r Formed on the side ,`plates',"2` andzlof thelock y housingare, loutwardly extendinwghbearing. hubs f 20 and` 2 lf, in which is ljdurnaled .,aspindlel genere ally indicated atD.,V spindleis bestjshownjin Figs. 1 2, 3 and 10. AAoeritral portionindicated at 23 is enlarged in diameter, whilelthe innerA kandouter endsof the kspindle are reduced indiameter, as indicated. at' 24. j The' central enlarged portion is` crossslotted. as.. atr25, 4and a rollback member 2t is thus formed. 4'Ifl'ieppposite sides of the cross slot are notched asshown at 21, and

these notches are provided for the vreception of a ,doggingmemberC'(seefFig..8) H I in any suitable mannerl on vthe opposite .ends of the Apair of knobs :30 and 3| are .secured spindle. The knob 30 will hereinafter bereferifed Yto as the outer knob, andthe g-knob' .'ilasfthe inner knob. flnsenble through'thffiniier endjf the spindle is a bar 32 which is circular in cross section and snugly fits the interior of the spindle, which is tubular. A collar 33 is formed on the outer end of said bar and engages the end of knob 3| to permit it to be grasped to rotate thc,

bar. The bar is best shown in Figs. 1, 2, 3 and 1'1. Adjacent its inner end it is cross-slotted on opposite sides to form a flat bar 3G which will herenafter be referred to as theallillator. ,Beyond that is a cylindrical extension 31, and on the yend thereof is formed a lug 38.

from the slots 27 formed in the spindle and the spindle may then be rotated by either knob to retract the latch bolt B. Such rotation of the spindle causes the rollback member 2S formed on the spindle to engage one or another of the shoulders I6 of the head I4, and the entire retractor plate, together with the clogging member, is thus 4moved rearwardly and the latch bolt is retracted; and when the knob by` which the spindle is rotated is released the retractor plate and latch bolt will return to normal or projected Vposition by means of the spring 5l and a second pair of springs indicated at 52. That is, the head .member 4 is provided with two lugs 53 and these serve to retain .the springs 52.

If the lock assumes the dogged or locked position shown inlig. 1, and a person desires to enter Extending through the outer A'knob 35 and into the tubular spindle is a key actuated tumbler cylinder 39 (see Figs. l, 2, 3 and 12). The spindle proper functions as .a housiner Afor :the :cylinder and .the rturnblers 'vnormallyznrojectinto ga slot :M formed .in .thefspin'dla and thus secures #the cylinder against rotation within the spindle.

EHnweverfby inserting a dieyfthe:tumblersll-ere retracted and the cylinder is then freetomotate, and when .itis rotated -a pair o lues 452 formed onfthe inner end engage the lueT 8 of the actuator.: and-rotation lis :thereby imparted `to ,the ,actuator bythe key actuated-cylinder. The -kev actuated tumbler'cylinder has a collar .45 formed :ondlisputerfend and this-is-overlaid-by an Eil-1m1- llar shoulder 4.6 formed-on theknob 3.0. The fkcy .olinderds thus-secured against endwise movement butzls lfree to rotate'Withinthespindle when rmkcyis imicrted. l

. By-referring@ Figf., it will be IlO-d .that memearf end gof [the fretraotor plate yb is .longitu- Adjtnaltly slotted, Easyshowtn at lZa. Hence when the head I4 is applied and riveted or otherwise secured -to the Ere,tractor plate, `a passage 42a will be formed Within the head .M `and anopening |219 :is a'accordingly .formed in the outer end of the head [to communicate withr saidbpening. In Fig. .s Ifwiube noted that :the .clogging member C fconsSS ,cia plate .43 .which is ,adapted toenter fthe ropening 1.212` ,in the head ,andto extend ,into fthef .passage "12a Aof vthe retractor ,plate .and .to vbe guided thereby. .Qn the .outer endof the ,plate this a ,head member .4.9. On V-each side .of the head is formed adogging lug .Cand on .the outer ende-pf 1the head is formeda lug .5which funcytions to .retain .the .spring 5|,.hereinafter to be referred@ l i .Thedogs C, as previously stated, are provided for the purpose of .entering-the ,slots 21 `of 4the Spindle andwhen they 1do Seether .dog the spindle [against rotation, .andas the knobs a .angel are Ysecured tafthesoindle, they will also be .dogged and the .door cannot be .opened by .rotation of .either;kr.1ob. Ille dessine .position of the lspihdleis 'shown 1in .Fic- .1`. In .this instance the latch boltB is full/.plQjeCted and the door is faccordingly locked as it cannot he opened either jjrom the inside .or `the outside, as the knobs and l the spindle are dogged against rotation.

`The"door,'however, may be opened from either theinside or the outside, as will -now be described; from the inside `the door can 'be opened by gripping theturnpiece 35 and rotating it a quarter of .a revolution. in soidoing the actuator :bar 3,6 on the ,bar .32 will engage :the'inner end `:of the plated-8 :which carries the dogs and :thus forceit rearwardly-with relation 'to the retractor lai- 1.11 'Sodoma'. the dass will befreiraciesi from Ithe outside, .it can be accomplished by the insertion of the proper key. Such insertion will cause retraction of the tumblers d and the tumbler ,cylinderlmaythenibegrotated. :Suchrotation lcausesgthe lugs 42 at 'the .inner end .of fthe vtumbler .cylinder 'to engage the luer 38am-d the actuator baris thus'rrotated to :force'fthe ,platefdB-which carries the dogs'rcarwardlmthere- .by pulling-the 'dogs Outof the slots 2l `of "the spindleandreleasingitcforrotation.` w I By referring toFig. it ywill be'noted that the cross lot which forms `.the rollback .memvber 2,6 is fairly wide. --I-n fact, it is j ustfsuiiciently .wide to permit the .U -shaped `head member Mito `enter said `slot so `thattheslficulders i6 thereof .may engage 'the `face of the 4rollback memherZB.

i -therollback Amember is clearly shown'inFig. 2; that is, the dotted lines-forming a continuation of ,the rollback member indicate the :diameter ofthe spindle and this view also shows the fdistance to which the head member on :the retractorplate ,enters the slot 25.Y` l

This entering portion ofthe headgis important.

`First ofA all, 4itpermits .the .shoulders 46 toaengage the Yrollback ,member 25; secondly, it forms ran interlock with the spindle, preventing its end- .wise removal -trom the door lock liousing and the `spndle cannot vbe `removed until the Aretractor plate .b carrying the head :member 4 -ismovedto .avpoint Wherethe shoulder I G assumes ',a 'position rearwardly iof the-cross-slottedlcentral portion of the spindle. -Such rearward movement vcannot take place under the 'ordinaryfoperations sto `which the lock .is subject, assuch `rearward movement is limited by a stop:memberlgenerallyindi- .cated at E (see Figs. 1A, 2, 3 and 9). The stop member consistsbf a Ibase -plate f55 which normally rests `on theinner yend bar 'I .of the U- shaped frame of the lock housing. The plate 55 .has two vforwardly extending arms and these 41. In this position thearms will engage the lnncr .end `of the head member ,Maand .thus limit inward movement of` the retractor.,plate and the latch bolt, and this inwardly movement is not sufficient torelease the interlock formed between .thehead .lll and the -cross slot `25 of .the'splindle The stop member E performs two functions, the main function being that of limiting inward movement Tof the .retractor `plate fand Ythe latch bolt, rand the second functionbeing that fof forming .a spring seat for the three springs ,indicated at 5l and 52. These springs normally maintain vthe 4retractor plate and ylatch /bolt in -the ,projected position shown in .Figl, and they :further- .more retain the stop member E in the .position also shownin Fig..1

arms normally assume `the position :shown `in Fig.

If it is desired to remove the spindle, for instance, for the purpose of repairing or inspect- `ing the lock, it can be accomplished from the inner face of the door lock by inserting a pin 6D through a hole 6l formed in the inside plate 3 of the lock housing; when the pin is thus inserted and pushed inwardly it engages one of the legs or arms 56 of the stop member, as clearly shown in Fig. 3, and it imparts a rocling movement thereto which swings the arms 56 out of alignment with the inner end of the head member i4 of the retractor plate. In this position an operator can exert nger pressure on the latch bolt B and push it inwardly beyond a normal retracted position, as shown in Fig. 3. In this position the shoulders I6 of the head member I4 will assume a position rearwardly of the enlarged portion of the spindle 23 and the spindle may then be removed endwise through the opening I2 formed in the retractor plate b and the bearings and 2| of the lock housing-that is, provided one or another of the knobs has previously been removed.

The movement imparted to the stop member by means of the pin 60 is a rocking movement, and by imparting the rocking movement as previously stated, the arms 58 are moved out of the path of travel of the inner end of the head member lil, The movement, however, that the pin is removed, the stop member will return to the normal position shown in Fig. l, as the pressure of the springs 5i and 52 will return it to this position. The rocking movement is identical to a pivotal movement, but no pivot is required as the base of the stop member or plate 55 may obviously be rocked on the bar 1, thereby eliminating any hinged or pivotal connection.

In my prior Patent No. 2,062,766, a stop member was also employed normally to limit inward movement of the retractor plate and the latch bolt carried thereby. The vstop member was, however, pivotally mounted on the retractor plate and was movable with the retractor plate. the structure functioned to perfection, its `structure and mounting were complicated when comparison is made tothe present stop member. This stop member is supported by the housing and requires no extra springs to maintain it in normal position. Thus it is more substantial and far simpler to construct and to mount in the lock. This stop member is the main improved feature of the present application.

While certain features of my invention have been more or less speciiically described and illustrated, I wish it understood that changes may be resorted to within the scope of the appended claims, and that the materials and iinish ofv the several parts 'may be such as vthe experience of the manufacturer or varying conditions-of use may demand.

Having thus described myinvention, what I claim and desire to secure by Letters Patent is:

1. In a lock of the character described, a housthe rcckable stop member, said spring normally.

tending to maintain the latch bolt mechanism in a projected position and the stop member in a position to limit inward movement of the latch bolt mechanism.

2. In a lock of the character described, a housf ing,a latch bolt-mechanism mounted for reciprocal movement therein, a stop member carried by the housing and normally disposed in the path of movement of the latch bolt mechanism to limit inward movement of said mechanism with relation to the housing, said stop member being movable to permit extended inward movement of the latch bolt mechanism beyond a normal retracted position, and a common spring interposed between the latch bolt mechanism and the stop member, said spring normally tending to maintain the latch bolt mechanism in a projected position and the stop member in a position to limit inward movement of the latch bolt mechanism.

3. In a lock of the character described, a housing, a latch bolt mechanism mounted for reciprocal movement therein, said housing having an inner end, a plate supported at the inner end of the housing, an arm on said plate extending into the path of movement of the latch bolt mechanism to limit inward movement thereof beyond a normal retracted position, said plate and arm being rockable to move the arm out of the path of movement of the latch bolt mechanism to permit extended inward movement of the latch bolt While mechanism, and a spring interposed between the latch bolt mechanism and the plate, said spring normally maintaining the latch bolt in an extended position and the arm in a position to limit inward movement of the latch bolt mechanism.

4. In a lock of the character described, a housing, a. latch bolt mechanism mounted for reciprocal movement therein, said housing having an inner end, a plate supported at the inner end of the housing, an arm on said plate extending into the path of movement of the latch bolt mechanism to limit inward movement thereof beyond a normalretracted position, said plate and arm being rockable to move the arm out of the path of movement of the latch bolt mechanism to permit extended inward movement ofthe latch bolt mechanism, and a` spring engageable with thev rockable plate to normally maintain the arm in a position to limit inward movement of the latch bolt mechanism. f f WALTER. R. SCHLAGE.

Images