US1961483A - Lock - Google Patents

Description

June 5, 1934. s, P. GOLDBERG LOCK Original Filed June 28 1928 2 Sheets-Sheet l N; INVENTOR 622/7706/ f. TORNEY June 5, 1934. s p, GQLDBERG 1,961,483 I LOCK Original Filed June 28, 1928 2 Sheets-sheet 2 /o l ATTORN EY Patented `lune 5, 1934 'LOCK Samuell l. Goldberg, Brooklyn, rN. Y., ,assigner to Ohantrell fLock Corp.,

York

Applicationjune 28, 1928., Serial No. 288;860

a corporation of New RenewedOctober 21, `1933 1'5 claims. (lol. lvil- 92) The `present invention relates to Alocks yand more particularly to' mortise `locks having .a dead bolt operable by'a key and/ or an inside knob, and a latch bolt operable -by the key or a .door knob.

5 These locks are suitable .for use in doors for cnice buildings, hotels, apartment houses, commercial buildings, residences, garages and .the like.

The present invention contemplates the provision of a lock of this -nature wherein it is impossible 'to move the latch bolt when the dead bolt is in protracted position. In this manner the -lock is more difficult to tamper with, for the latch .bolt then functionsfin a way like the dead bolt, and it is necessary to break .through both bolts.

A further 4object `of the invention is to provide an improved formof lock construction .wherein the dead bolt is yheld in protracted or retracted position ybyatumbler which may take the form of a reciprocatory :plate cooperable lwith a lug or other device on the dead bolt. This tumbler -or plate is preferably controllable eitherby the :key

or the inside knob `to actuate the deadbolt.

' In apartment houses, hotels and `office buildings it is frequently desirable to provideia .master keyby which theowner or hisagentrcan open Va number fof doors in the fbuilding. .It has been lcustomary `to provide such master keys which may actuate -both the latch .bolt and `the' dead bolt. The provision of such a master .key rhas been common, notwithstanding the fact ithat roll back and rely upon the latch bolt forpreventing unauthorized entrance, and use the master key Ato operate the'latch bolt. l

'The possibility of having the master key :oplerate the dead bolt has been found to present many undesirable features such asvthe possibilityof a master keyvcoming into the possession of unauthorized persons and the possibility vof the use of the master ikey -to effecten entry when the door yhas beenV locked by the key or the inside knob. The possibility -of such und'e-V sred entry or intrusion'by use of 'the masterkey has frequently resulted in -the installation of -.a privatelock at expense to the Ytenant and `with damage to the=door and door casing.

The present invention contemplates' the provision of a lock wherein the .master key ,may :be used tooperaterthe latch bolt only, and'where -it is necessary to'usetheeorrect :key to operate the dead bolt. This makesit'impossiblelto veffect entry -by `means of the master key whenthe ,bolt has `beenflocked either by :theproper key, or iby `many possible embodiments in whichl the invjen y .tion may ,take '.form,.it beingunderstood that ,the

`the-key operatedlcammo'ved sufli'ciently torelease .the inside knob Where one is provided. In this manner the tenant is provided with ,a lock which .can `be* Qperated-onlyby'one who has the proper vkey,.and it is `unnecessary for the tenant to Jpro- -vide an additional lock for which .there fis no .master key. The invention also .contemplates the .automatic removalof the ,latch bolt .operating ,mechanismfrom .therange of action of the .key

operated `:mechanism when ,the dead bolt is protracted. The present kinvention also contemplates the provision of a lock wherein the dead bolt carries )pins normally confined within the vdead bolt .but

1in locking orf-unlocking.` 80

Other and :further l objects yof the invention will .beapparent @as the description proceeds.

, For conveniencejindescription, all these fealtures will be shown in a lock operated :by a cyl- '.rinder. `Many.ofzt-he'xnovel features of the -pres- .8,5

ent invention are, however, fcapable of `embodi- V:ment in alockfof the" bit key type.

when the `space is unoccupied,v one canstop Athe y 4Theiaocompanying :drawings show, -for purposes kof illustrating ithe present invention, vone. of `the :drawingsareillustrative of the linvention rather pthanlimiting the same.

- 1In;these=drawings:

`Figure .1 is I.ai sideelevational view of the llock with the cover plate removed -frornt the upper part zo'ftheilockshowing `in full lines-the-deadbolt in ,retracted position, :and showing in dot vanddash lines"the@operation of the latch zbolt from the key operated cylinder; -either .by the master Akey or the vregular key; Y Y

eFigure 2 is an elevational view showingA the position of 4the'deadlbolt:andlatch bolt and inter- ;relatedparts inthe ,position assumed when the 1dead .bolt is ,moved to protracted position, the

Adoor knob actuating mechanism .for the .latch `boltvbeingfomitted;

vFigure 3 isaviewsir'nilarl to Figure 42 vshowing the sliding plate .or tumbler; 110

plete circumference in either direction. The

Figure 4 is a sectional View taken on the line 4-4 of Figure 1 looking in the direction of the arrow;

Figure 5 is an elevational view of the back or rear face of the dead bolt, with parts broken away to show interior construction; the lateral pins being withdrawn into the dead bolt;

Figure 6 is a front elevational view of the dead bolt and associated parts in the fully protracted position, the tumbler operating lever being removed; and

Figure 7 is a fragmentary view similar to Figure 2 showing the extent of movement of the cylinder when using the master key and also the inability of either key to operate the latch bolt when the dead bolt is protracted. n

'I'he face plate of the lock is indicated at 10. It carries a metal case 11 which is fastened in place by screws 12 passing `through lugs Y13a on the casing and lugs 13 extending rearwardly from the face plate 10 of the lock. The casing has a side wall 11a, top and bottom walls 11b and 11e, and a rear wall 11d, and is closed by a cover plate 14 fastened in place by screws 15 which pass into threaded bosses 15a carried by the casing. The casing carries posts and the like to support the lock parts, and suitable guides, stops and the like are carried by the casing and cover for cooperation with the -movable lock parts.- The lock is adapted to be mounted in the door in the usual manner and cooperates with the usual striker plate 10'. f

The lower part of the lock carries a latch bolt 16 which is adapted to pass through holes 16 and 16" in the face plate and striker plate in the usual manner. This latch bolt is protracted or urged outwardly by spring 17 surrounding the lshank 18 of the latch bolt and the shank is guided by the lugs 19 and 20 carried by the casing. It moves b ack and forth between lugs 19 and 19. The' latch bolt 16 is adapted to be retracted by Vthe ordinary knob shoe or yoke 21 cooperating in the customary manner with a hub or roll-back 22 adapted to be actuated by the usual knob spindle, not shown. The roll-back 22 is adapted tobe llocked or released in the usual manner by a reciprocatory plunger 23 under the control of buttons 24 and 25 and a lever 26. The latch bolt 16 is provided with forwardly facing shoulders 16a and with a rearwardly facing cam surface lbfor purposes to be described. 1 i

The present form of lock is'preferably'ofV the cylinder type. A double sleeve key operated cylinder is indicated at 30. This cylinder has two sleeves or barrels, the inner one of which is connected with a double toothed cam member 31 while the outer cylinder is connected to aplate 32 having a single arm 33. The double tooth cam member 31 is adapted to be'operated by the guest or owners key and can be turned through a comouter sleeve carrying the plate 32 is adapted to be operated by the master key only and is then con- -nected to the inner cylinder to operate it simultaneously. The extent' of movement of thel outer sleeve is, however, determined by the engagement of the arm 33'vwith pins 34 and 35 so that it is impossible with a master key to turn thecam member 31 beyond the positions determined by these stop pins. kThe cylinder is secured in place by the usual screw 36.

The dead bolt 40 is disposed below the cylinder v30 and is protractable and retractable by 'the When `the yoke 56 by a knob 56 or other device cuscylinder operating through the cam 31. the dead bolt is retracted asindicated in Figure 1, the end of the dead bolt is flush with the face plate 10 of the lock and the rear end of the bolt is close to the side wall 11d of the case. The dead bolt passes through holes 41 and 4l in the face plate and striker plate and is provided with a slot 42 to receive a guide post 43 carried by the casing 11.

A tumbler operating lever 44 is pivoted on a post 45 extending upwardly from the front face of the dead bolt 40. This tumbler operating lever has two arms 46 and 47. The arm 46 extends along the upper or front face of the dead bolt 40 and is provided with two rearwardly extending cam engaging projections 48 and 49 which pass between the talons 50, 51 and 52 on the dead bolt. The lower arm 47 of the tumbler operating member 44 carries a rearwardly extending pin 53 which passes between the arms 54, and 55 of a bifurcated yoke 56 and into a slot 57 of a sliding locking plate or tumbler 58. The tumbler operating lever 44 is urged upwardly against the talon 52 by means of a spring 59 having its free end anchored behind a lug 60 extending downwardly from the dead bolt 40.

The locking plate 58 is-guided for vertical reciprocation by a lug 61 carried by the casing, by one face of the lug 43 and by the rear wall 11d of the casing 11. The upper edge of the tumbler plate 58 is cut back as indicated at 62 and 63 to produce notches adapted to receive the rearwardly projecting lug 64 carried by the dead bolt.

When the dead bolt is in the unlocked or retracted position as indicated in Figure 1, it is possible by use of the proper key to turn the double cam member 31 in a clockwise direction as indicated by the dotted arrow. This will bring the cam face 31a against the cam-receiving projection 48 on the tumbler-operating lever 44. Further movement of the key will press the tumbler operating lever 44 down causing the pin 53vto move the tumbler plate 58 down. This movement of the plate withdraws the notch 63 from the lug 64 so that the dead bolt 40 is free to be protracted or moved toward locked position. During this movement the cam 31a holds the locking tumbler and'parts in the lower position until the cam 31h comes against the cam receiving projection 49 on the tumbler operating lever 44. This holds the tumbler in the lower position until the dead bolt is thrown to the extreme left position.v The complete path of the cams 31a and 31h is indicated in Figure 2 and it will be clear that after the cam 31h is passed beyond the vdead bolt, the spring 59 will force the tumbler operator 44 and the tumbler 58 upwardly causing the notch 62 to receive the lug 64 thereby: securing the dead bolt in protracted position and preventing its accidental or unintentional return. During this movement the post 43 and hole 41 have guided the dead bolt for straight line reciprocation.

The employment of two spaced cams 31a and 315 on the cam plate actuated by the key and cooperative cam receiving projections on l the lever 44, makes it possible to obtain an increased throwof the dead bolt over what is generally available with the single cam arrangement. The two cams and intervening space together with the arrangement of three talons function similar to a rack and pinion and it is readily possible to provide a throw of an inch in a inortise lock of the usual dimensions.

The dead bolt may also be operated by turning -key into `the cylinder.

stud 72 carried by the casing l1.

tomar-ily `provicledonthe inside of thedoor. The turning fof this yoke will depress the tumbler 58. to release the bolt and then further movement will-actuate the bolt through the post 53 and the branch 47 of the lever -44.

Provision .-is also made A1for interconnecting the dead kbolt 40 with. the latch bolt '16 so that it is impossible to move the latch bolt in when the dead 'bolt is protracted. To carry out this feature of the invention, the iprojection 60 on the dead ibolt is cooperative Vwith a lever V pivoted at `66. The lever is weighted at 67 so that it `normally rests on the .cam surface 16h of 'the latch bolt. During the vprotracting movement of the 'dead bolt, the face 60 of the lug '60 is brought Afclose to or against the nose-of this lever holding lit in the full line position of Figures 1 and 2. 'When the dead bolt is protracted as described, lit -is impossible to force the latch bolt back by any means whatever for the cross over lever `65 effectively preventsany inwardmovement of the 'latch bolt. It is impossible to swing rthe `cross over lever to the right when the locking plate 58 is in la .position to lock the rdead bolt.

lWhen the 'dead `bolt is'in the retracted position vit iis possible to operate the latch bolt `by inserting either the master key or the owners When the owners key is yinserted in the cylinder and -turned backward,

`as indicated in Figure 1, the cam-31h is brought against the nose 70 of -a lever -71 pivotedon the This will move the `lever '70 from the yfull line position to the dot Land 'dash lline position shown in Figure l. The lever 'l0 is associated `with a second lever 73 pivoted at '74. The free end 75 of the lever .'73 engages the shoulder 16a Ion the latch bolt. Movement of vthe cam .plate 3l in a counterclockwise direction as viewed in Figure '1, it is apparent, `will-operate the levers '7-1 and -73 so as to retract the latch bolt 16.

This operation `of, the latch bolt lmay be had either by the owners key'or by the master key. When the master key lis used the plate 32 is carried around to move the lug -33 from the dotted to the full line position Vshown `in Figure '7 `bringingthis lugfagainst the stop pin35. This movement is 'sufficient to vpermit `the -cam 3111 vto operate the 4lever 60 -for retracting the latch bolt.

Inforder `that `the latch bolt retracting mechanism lmay Ibe linf-the :proper position when the dead bolt is retracted, the dead bolt is provided with-afiinger or lug 76 which overlies the nose yof the lever '71 so astoforce this lever `to the Iposition indicated. The lever 73 will be held to the full line posi-tion of Figure v-l by the spring 18 operating vthe latch bolt. In order that the lever'lO will be V-outof therange of the cylinder ycam 31, when the dead bolt is inprotractedposition, provision is xmade for lshifting this lever '10 tothe position indicated'in'fFigurev2. In the form shown, Ithis movement is accomplished vby ashoulder 77 lwhich engages'aiiin 'I8 on the lever '10. Thisfshoulderactsonthe lever 'lOfto throw it back't'o the position vshown in Figures 42, 43

land -7 `to hold it `out of -range of the cylinder cams. Itis apparent that. this lever `'71'will be so moved irrespective of whether thedead bolt is actuated-by the cylinderl 305er by the 'knob 56.

According Vto the .preferred construction, vthe present -form of lock is provided with Apins bodily carried by the-deadbolt which pinslare protracted and fretracted relative to the 'dead -bolt when the dead bolt=is=operated. Ashereshown,

v81 and a2.

rpins 81 yand 82.

`shown is but one of the many forms.

the dead bolt 40 is recessed as indicated at 80. The dead bolt is drilled to receive a pair of pins Each of these pins has a bifurcated extension 83 to receive a tooth 84 of a pin actuating member 85. These pin actuating members 85may be alike andare pivoted on pins 86 carried by the #dead bolt 40. The pin actuating members 85 are bifurcated as indicated at 87 to receive a rearwardly extending n 88 carried on a T-shapedsliding member 89. These parts are covered by a plate 90 adapted to slide into an undercut groove provided in the material of lthe dead bolt, lthe plate 90 being fastened in :place by a screw' 91. 'tory member 89 is adapted -to move @back and The T-shaped reciprocaforth in the recess and has an outwardly projecting stem-or guide 92 which carries a pin 93. This slider is adapted to `be actuated by a 'bell crank shaped lever 94 pivoted at 95 to the dead bolt and passing over the pin .93 on the slider 89. The lever 94 is held in place by a `portion 96 of the cover plate 90 which overlies it. The free end 9'7 of the lever 94 is carried adjacent a guide'98 formed in the casing 11.

This guide 98 extends nearly over to the upper 4lug 13a on the casing and is cut away or `bev- -eledslightly as indicated at 99. When the dead `bolt is .in the retracted position as indicated in Figure 1, the lever Wis-alongside thisguide 98 and the other end 100 of the lever is against the upper surface of the lug 43. In this manner the lever 94 is prevented from turning and the pins `8l and 82 are held in the retractedposition as indicated in Figure 5.

As the dead bolt is moved outwardly, the

guides 98 and 43 hold these locking pins inside the outline of the dead bolt.

against the abutment or stop 13a as indicated in Figure 2. As shown `in Figures 2 and 6, this causes aquick clockwise movement of the lever 94 shifting the slider 89 from the position shown 1in Figure 5 to the position shown in Figure v6 'thereby bringing the 1in 88 against the opposite side fof the bifurcation or slot 87 causing the lteeth 84 to act on the pins 81 and 82 `to project them outwardly. When these parts have thus been projected outwardly they are held securely 'by-the close lt of -the parts.

During `the .first movement of the retraction -of `the dead bolt, however, the guide 98 acts on 'the :lever 94 to swing in a counterclockwise direction to accomplish the withdrawal of the The movement of the pins 81 and'82 takesplace only7V when the dead bolt is zbeyond the striker .plate 10. When projected outwardly they offer a great obstacle to the jim- `mying-of Vthe lock.

It is obvious `that the invention vmay be em- -bodied in many forms and constructions, and I wish it 'to lbe understood that the particular form It is also obvious that'certain parts and functions may be omitted kif desired. Various modifications and fchanges `being possible, I 'donot'limit myself in any way withrespectfthereto.

What is claimed is:

`1. 'A lock having a spring protractable latch bolt, mechanism for retracting the latch bolt, a key operated dead 'bolt mechanism including a tumbler for holding the dead bolt in protracted position, .and :a movable umemberadjacent the 50 latch bolt and free to move therewith when the dead bolt is in retracted position, said member being moved to a predetermined position when the dead bolt is protracted, in which position it prevents the retraction of the latch bolt.

2. A lock having a spring protractable latch bolt, mechanism fork retracting the latch bolt, a key operated dead bolt mechanism including a tumbler for holding the dead bolt in protracted position, the dead bolt having a lug, a lever pivoted adjacent the latch bolt and having a surface engageable with the latch bolt and an end engageable with the lug on the dead bolt, the lug acting to hold the lever against the latch bolt when the dead bolt is protracted and thereby prevent retraction of the latch bolt.

3. A lock comprising a spring protractable latch bolt, knob operable mechanism for retracting the latch bolt, a dead bolt, a double-sleeve cylinder adapted to receive a master key or an owners key, the inner sleeve having a tumbler actuating cam for protracting or retracting the dead bolt, and being revolvable only by the owners key, the outer sleeve and inner sleeve being simultaneously operable only by the master key and then having limited freedom of movement, devices for retracting the latch bolt when the cylinder is operated backward by either the master key or the owners key with the dead bolt in retracted position, said devices being moved beyond the path of the cam when the dead bolt is protracted, whereby the master key is ineffective.

4, A lock comprising a spring protractable latch bolt, knob operable mechanism for retracting the latch bolt, a dead bolt, a double-sleeve cylinder adapted to receive a master key or an owners key, the inner sleeve having a tumbler actuating cam for protracting or retracting the dead bolt, and being revolvable only by the owners key, the outer sleeve and inner sleeve being simultaneously operable only by the master key and then having limited freedom of movement, insuiiicient for actuating the' dead bolt, and devices held in the path of the cam when the dead bolt is retracted and then operable by the cam when moved by either key to retract the latch bolt, said devices being moved beyond the path of the cam when the dead bolt is protracted.

5. A lock comprising a reciprocatory dead bolt, guiding means for the dead bolt, a reciprocatory tumbler having notches to receive a lug on the dead bolt and hold it in protracted or retracted position, a tumbler operating member pivotally mounted on the dead bolt and movable therewith, spring means to hold the tumbler in position to arrest the dead bolt, and a key operated cam for engaging the tumbler operating member to actuate the tumbler and release vthe bolt, the key operated cam then acting on the dead bolt to protract it or retract it. i

6. A lock comprising a reciprocatory dead bolt, guiding means for the dead bolt, areciprocatory tumbler having notches to receive a lug on the dead bolt and hold it in protracted or retracted position, a tumbler operating member pivotally mounted on the dead bolt and movable therewith, spring means to hold the tumbler in position to arrest the dead bolt, and an inside knob operated yoke engageable with the tumbler' operating member to actuate the tumbler and release the bolt, the yoke then acting on the dead bolt to protract it or retract it.

7. A lock comprising a reciprocatory dead bolt, guiding means for the dead bolt, a reciprocatory tumbler having notches to receive a lug on the dead bolt and hold it in protracted or retracted position, a tumbler operatingmember pivotally mounted on the dead bolt and movable therewith, spring means to hold the tumbler in position to arrest the dead bolt, and a key operated cam and a knob operated yoke both engageable with the tumbler operating member to actuate the tumbler and release the dead bolt, and either of which are then capable of acting on the dead bolt to protract it or retract it.

8. A lock comprising a reciprocatory dead bolt, means forV guiding the dead bolt, a reciprocatory tumbler having notches to receive a lug on the dead bolt and hold itin `protracted or retracted position, a tumbleroperating member pivotally mounted on the dead bolt and movable therewith, the member having extensions passing between talons on the dead bolt, a spring for holdingthe tumbler in position to arrest the dead bolt, and a double faced key operated cam engageable with `one or the other of said extensions to depress 4the tumbler operating member and tumbler to hold it in position to release the dead bolt, the cam then engaging the talons to shift the dead bolt to the other position and after passing vbeyond the `extensions allowing the spring to restore the tumbler.

9. A lock comprising a reciprocatory dead bolt, means for guiding the dead bolt, a reciprocatory tumbler carried` behind the Adead bolt and having notches to receive a lug on the dead bolt and hold it in protracted or retracted position, a tumbler 'operating member pivotally mounted on the front side of the dead bolt and movable therewiththe member having a downwardly extending branch having a pin engageable with a slot in the tumbler, a spring for holding the tumbler in position to arrest the-dead bolt and a knob operated yoke pivotally mounted below the bolt and engageable with the pin to actuate the tumbler and shift the dead bolt.

10. A lock comprising a reciprocatory dead bolt,

`means for guiding the dead bolt, a reciprocatory tumbler carried behind the dead bolt and having notches to receivev a lugcn the dead boltand hold it in protracted or retracted position, guides for the tumbler, a tumbler operating member pivrotally mounted in the dead bolt and bodily movable therewith, the tumbler being actuated by the movement of the member about its pivot, and key operated means and knoboperablejmeans for actuating the tumblerY operating member, `the tumbler and dead bolt., v

1l. In a lock, a xed member, a dead bolt, means to protract or retract the dead bolt, means to arrest it in the position to which it has been moved, laterally movable pins carried by the dead bolt near the free end thereof, means movable with the dead bolt and cooperative with the xed member for holding the pins conned. within the outline of'the dead bolt when it is out of the extreme protracted position, and a stationary abutment against which the pin holding means is brought after being carried beyond the guide for projecting the pins beyond the edges of the dead bolt at the dead bolt is moved to extreme protracted position, the means for holding the dead Vbolt protracted also preventing the forcing of the pins inwardly.

l2. In a lock, a dead bolt, means to protract o1' retract the dead bolt, a lever pivoted onthe dead bolt and bodily movable therewith, stationary guides for moving the lever in a predetermined manner as the dead bolt is moved, locking pins normally carried inside the dead bolt, and means actuated by the lever for projecting and withdrawing the pins.

13. In a lock, a dead bolt, means to protract or retract the dead bolt, a tumbler for arresting the dead bolt in either position, a lever pivoted on the dead bolt and bodily movable therewith, stationary guides for moving the lever in a predetermined manner as the dead bolt is moved, locking pins normally carried inside the dead bolt, and means actuated by the lever for projecting and withdrawing the pins, the tumbler when holding the dead bolt in protracted position also holding the lever against a stop whereby outside force applied to the pins is ineffective to move the pins inwardly.

14. In a lock, a dead bolt having a recess, pivot posts in the recess, and laterally extending drillings communicating with the recess, pins reciprocable in the drillings and conned thereby to a reciprocable movement, pin actuators removably mounted on the pivot posts housed in the recess, a slider separably connected to the pin actuators, and a cover plate holding the slider in operative relation to the pin actuators and holding the pin actuators and slider in the recess.

15. In a lock, a dead bolt, a stationary device adjacent the dead bolt, the bolt having a recess and laterally extending pin guideways communieating with the recess, pins reciprocable in the guideways, pin actuators housed in the recess, a slider connected to the pin actuators, and a slider operating lever pivoted to the dead bolt and the slider, the free end of the lever extending beyond the side of the bolt and being engageable by said stationary devices to reciprocate the pins when the dead bolt is reciprocated.

SAMUEL P. GOLDBERG.

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