US2693692A - Knob lock - Google Patents

Description

Nov. 9, 1954 A. E'RKKILA KNOB LOCK Filed June 13, 1950 4 Sheets-Sheet l I l a llllllll. 'IlllllA V IIIVIIIIM Il' INVEN-ron Eric/@za I: VIS.. BY

u Z5 4 ATTORNEY A. ERKKILA Nov. 9, 1954 KNOB LOCK 4 Sheets-Sheet 2 Filed June 13, 1950 En Tull...

INVENTOR .ndrew lErn/r/d ATTORNEY Nov. 9, 1954 A. ERKKILA 2,693,692

KNOB Loox Filed .June 13, 195o 4 sheetsfs'neet s INVENTOR ndrw Erk/la ATTORNEY A. ERKKILA' Nov. 9, 1954 KNOB LOCK 4 Sheets-Sheet 4 Filed June 135, 1950 www om QTTORNEY 2,693,692 Patented Nov. 9, 1954 KNOB LOCK Andrew Erkkila, Fitchburg, Mass., assignor to Independent Lock Company, Fitchburg, Mass., a corporation of Massachusetts Application .lune 13, 1950, Serial No. 167,810

Claims. (Cl. 70 146) This invention relates to cylindrical locks and latches and more particularly to knob carrying and operated locks and latches.

It is an object of my invention' to provide locking devices for doors or the like which may be applied as a unit in drill holes formed in the frame of a door or like closure.

More particularly it is an object of my invention to provide a latch and assembly which is knob operated, and which carries and includes key retaining means for operating the latch mechanism held within the knob assembly whereby a compact factory assembled unit may be furnished for installation in a door or like closure and the door prepared simply by boring intersecting drill holes for the latch casing and knob assembled casing, to require little skill, accuracy and labor in installation.

Still more particularly it is contemplated by my invention to provide a lock assembly in which key operated means are carried in the knob and more particularly characterized by the features that a rigid spindle assembly forms the core for the actuating mechanism, to assure long life in use, to permit key operation clockwise or counter-clockwise in accordance with the handing of the door, to make installation comparatively simple, to permit of wide tolerance in making the drill holes for the lock and knob assembly and to assure that tampering with the mechanism does not destroy operability by the key mechanism.

Still more particularly my invention resides in the provision of a knob control lock assembly which is readily usable as a simple latch bolt accuating medium which serves as the basis for combining therewith other features found desirable in closet doors, passage doors, bathroom doors, and exterior doors including an inside control button to optionally lock the outside knob under manual setting of the button and hold it rigid; an inside control button optionally to lock the outside knob and hold it rigid except for independent key actuating or to release the same to retract the bolt independently of the button control setting. The invention furthermore contemplates a skeleton or core assembly to which the additional features previously enumerated may be added without radically redesigning the basic assembly, so that a low cost multi-purpose knob controlled lock may be provided.

Still more particularly my invention resides in the provision in a lock and'` latch for installation by simple drill holes of a construction which is readily adaptable for use as a communicating door latch, outside lock for key operation, and outside lock for key operation with control optionally to permit of key operation or knob operation, which` mechanism is provided at relatively low cost in manufacture and in installation.

To attain these objects and such further objects as may appear herein or be hereinafter pointed out, I make reference to the accompanying drawing forming a part hereof, in Which Figure l is. a transverse section through a door showing a knob lock in accordance with my invention;

Figure 2 is a section taken on the line 2 2 of Figure l;

Figure 3 is a still further magnied fragmentary section takenv on the line 3 3 of Figure 2;

Figure 4 is a rear View of thev latch Casing looking in the direction of the lines 4 4 of Figure 2;

Figure 5 is a section taken on the line 5 5 of Figure 2;

Figure 6 is a section taken on the line 6 6 of Figure 3;

Figure 7 is a magnified longitudinal sectional view taken on the line 7 7 of Figure 2;

Figure 8 is a section taken on the line 8 8 of Figure 7;

Figure 9 is a section taken on the line 9 9 of Figure 7;

Figure 10 is a section taken on the line 10 10 of Figure 7;

Figure 11 is a section taken on the line 11 11 of Figure 7;

Figure 12 is a section taken on the line 12-12 of Figure 7;

Figure 13 is a section taken on the line 13 13 of Figure 7;

Figure 14 is an end elevational view of the inside knob;

Figure 15 is an end elevational view of the outside knob;

Figure 16 is a magnied sectional view through the inside knob;

Figure 17 is an exploded perspective view of the knob assembly.

My invention may be summarized as providing a knob lock for retracting a latch mechanism by knob operation in which the knob assembly has more or less integrated with it the retractor mechanism' for withdrawing the latch for clockwise operation and which has, as a core thereof, a supporting spindle upon which the various knob controlled elements are mounted, including an assembly which may be installed upon a door or like closure by simple drill holes extending through the edge of the door and transverse thereof, within wide tolerances of inaccuracy, and including tubularly arranged cooperating parts serving as trunnions for relatively movable knob operating parts including latch retracting mechanism, inside knob retracting mechanism, including a knob mounted button control for outside knob control of operation.

Still further, my invention resides in novel details of retractor assembly and door'knob control thereof which may be mounted as an integrated assembly upon the door, including a push button' control mounted on the 1ns1de knob for preventing outside knob actuation and readily convertible to include key actuation independently of the setting of the inside knob, whereby despite tampering With the outside knob, the assembly may be oper- 1atedb from the outside by key, or from the inside by Making reference to the drawing, I provide in my invention for a door 10, a boring 11 through which a knob assembly 12 serves to actuate a latch 13, projectible into the strike 14 of the door frame 15. The latch 13 is associated with the latch assembly having a casing 16, fitting within a boring 17 through the edge of the door. The boring 17 intersects the boring 11 for simply mounting the knob assembly and c singassembly by augers, to require no skilled morticing to install the assembly.

The knob assembly is oriented with regard to the latch retractor mechanism comprising an outside plate 18 which is formed with a bearing 19, within which is rotatably mounted the front or outside hub 20, having camming wings 2l and a locking slot 22 for engagement with the locking boss 23, struck up from the plate 18. The hub may rotate within the bearing 19 When retracted to the position shown in Figure 3, but may slide longitudinally of its axis to have the boss 23 engage the slot 22, to hold the hub against relative rotation.

The hub 2t) is formed axially with a squared keying boring 24 for engagement by a square spindle 25, on which is rotatably mountedv the rear or inside hub 26 by reason of the boring 27 which clears the corners of the spindle. The rear hub 26 is formed with the camming wings 21. The front hub and rear hub may' actuate the retractor shoe 2% by engagement of the tongues 30 struck up from the end plates of the shoe.

The shoe is covered by a shoe plate 31, having a slot 32 riding over the front hub 20 and spanning the boss 23 struck up from the plate 18. The shoe has riveted thereon a latch draw pin 33 extending through the shoe retainer 34 and the guide slot 35 thereof. The shoe retainer has its rear portion formed with a seat 36, having protrusions 37 for seating the springs 38 to bear against the yoke 39 housed within the shoe. The shoe retainer 34 is formed with L-shaped tongues 40 which may pass through cutouts 41 in the plate 18 for engagement by the anchoring springs 42, which are bowed over the anchoring lips 43 to hold the shoe retainer against displacement from the plate 18. The shoe plate 31 is formed with cam follower pins 44, extending through the slots 45 formed in the plate 18.

The retractor assembly is retained complete by projecting the neck 46 through the usual retainer casing 34, whereupon the C-shaped lock washer 47 is snapped into position, to engage the groove 48. There is then positioned over the sleeve of the front or outside hub 20, the key plug operated cam 49 so that the splines 50 thereof ride upon the sleeve of the front hub and the wings 51 span the cam follower pins 44 projecting through the plate 18.

With this assembly completed, there is then assembled an outside rose 52Vhaving an insert 53 of cast metal, formed with bosses 54 which are bored to correspond to the drill holes S of the plate 18. Spacer pins 56 for the screw threaded segments 57 are arranged to hold the plate 18 in engagement with the rose insert by projecting through the drill holes 55, to be seated in the bosses 54. The rose insert has a stepped clearance to receive the key plug cam and cam follower pins extending to one side of the casing. The outside rose 52 and its insert 53 have connected therewith, the shank 58 whose inner sleeve 59 has a driving t with the rose insert 53.

The shank 58 has sleeved therein the guide ring 60 for the spindle 25 (see Figure 9), the outside sleeve 61 and the key cam driver sleeve 62. The assembly is effected by passing the spindle 25 through the rear hub and into the front hub 20, to align the borings 63, 64, 65 over the slot 66 of the key cam driver, whose keyways 67 have been brought into engagement with the splines 50 of the key plug cam. In this aligned position, the cross pin 68 is dropped into position through the borings 65, to engage the hole 63. Thereupon the knob bottom segment 69 is sleeved over the outside sleeve 61. The key cam driver 62 is connected to the plug extension 70 of the cylinder 71 and held thereto by a rivet 72, and in this position the cylinder casing 73 is brought into keying engagement with the slot 74 of the outside sleeve. The outside knob 75, with the knob insert 76, is now sleeved over the cylinder 71 to have the slot 77 span the cylinder casing 73 and to bring the key ways 78 into alignment with the slot 79 of the outside sleeve 61. In this position, the locking washer 80 is snapped over the knob insert sleeve 78a, to project the tongues 81 through the key ways 78 and into the slot 79, thereby projecting the cylinder shoulder 82 axially within the central flange 83 of the knob.

The spindle 25 projecting through the rear hub has been positioned to hold the locking rod 84 slidable within the slot 85 and with the nger 86 thereof engaging one of the diametrically arranged drill holes 87 or 871 in the front hub 20, as more clearly shown in Figure 3. The selection of holes is provided for appropriate handing of the assembly. Thereupon a hub driver 88 is sleeved over the spindle 25 to direct the splines 89 thereof into engagement with the keyways 90 formed on the rear hub 26.

In the engaging position of the hub driver and rear hub, the hub driver 88 is locked against endwise movement with relation to the spindle 25 by means of the nuts 91 and 92, which are threadedly engaged with the threaded portion 93 of the spindle. The locking rod 84 has a push-pull anchoring eye 94 projected through an inside shank 95 and an inside knob sleeve 96 for coupling to the pivotable draw lug 97 by means of the cross screw 98 passing through the knuckle 99 to hold the pivotable draw lug and locking rod in engagement with each other.

The shank 95 has a boring 100 which may be aligned with the boring 101 on the sleeve and the threaded hole 102 on the hub driver, to hold the inside sleeve and inside shank against relative movement by means of the set screw 103 which is headed to lie within the cont extreme endof the sleeve.

iines of the wall thickness within the boring of the inside shank.

The inside sleeve 96 is formed with a slot 104 serving as a guide for a dog 105 which has a dogging lip 106 projecting beyond the shouldered portion 107, acting as a limiting stop to movement in an outward radial direction. A centrally notched leaf spring 108 presses the dog in the limiting upward position and holds itself against endwise displacement. A slot 109 forms a fork which permits retraction of the tail of the dog, and guides the tail portions of the dog as well as to hold the spring 108 against transverse shifting movement.

The dog 105 is formed with an aperture 110 generally key-shaped in contour, through which the locking rod passes. The dog 105 serves as a base for the expansion spring 111 at one end and engages the ring 112 at the other end. The pivotal draw lug 97 has a head 113 engaging the ring 112 to hold the pivotal draw lug revolubly mounted in the ring 112. The ring 112 is knurled on its periphery and has a driving fit in the button 114, in which shell formed member there is housed the expansion spring 115, bearing on the head 113 of the pivotal draw lug. The turnbutton has a shouldered portion 116 offset from the rim 117 of the inside sleeve 96. A follower pin 118 is driven into the wall of the turnbutton 114 to make a driving -t with the ring 112. The pin 118 projects into a cutout 119 formed in the inside sleeve 96 to engage a side wall contoured to form a camming edge 120. Rotation of the turnbutton 114 by means of the attened head 121 clockwise will drive the locking rod inwardly until the pin 118 is seated in the detent seat 122, holding the same frictionally in the inwardy projected position.

Counterclockwise rotation of the turnbutton 114 will resiliently draw the locking rod outwardly, while sliding the pivot draw Without rotation.

The assembly thus described may be assembled by projecting the same from the outside of the door through the boring 11 to the inside of the door, with the inside plate and knob removed, with the latch draw pin retained wholly within the boring for coupling with the shank 123 projecting in the path of the latch draw pin extended from the latch casing 16, and engaged in the slot 124 of the shank 123. The details of the latch bolt within the casing 16 will be described hereinbelow.

The inside sleeve and shank projecting through the inside face of the door has then sleeved therethrough the inside plate 125 which is provided axially with a bearing flange 126 spun out from the body of the metal sheeting employed, to serve as a bearing for the inside shank 95.

The plate is provided with riveted sleeves 127 positioned to ride over the pins 56, slidably to conform to the thickness of the door. Screws 128 are passed through the sleeves 127 to engage the screw threaded boring 129 of the pins 56, to clamp the inside plate against the inside face of the door. The plate is formed at its periphery with upstanding anges 130 and with locking anges 131, diametrically opposed intermediately of the anges 130. The locking anges 131 are beaded to provide an inwardly directed resilient overhang 132 having its end spaced from the plane of the inside edge of the plate 125.

An outside escutcheon 133 is provided having a central opening 134 to permit sleeving over the inside shank 95. The periphery is formed with a tapering flange 135 which may ride over the flanges 130 and 131 and snap into engagement over the locking edges 132. A small slot 136 cut out in the rim permits the insertion of a screw driver or the like, to lift the escutcheon 133 from engagement with the locking flanges 131, should adjustment be required.

With the escutcheon 133 in position, the inside knob 137 may be mounted in position by sleeving the lower shank portion 138 over the inside sleeve 96 to guide the forward portion 139 below the rim 140 of the inside shank 95, rst depressing the dog 105 out of the path of the shank to permit its clearance until the limiting position snaps the dog into the slot 141.

The end of the knob is formed with an inwardly directed annulus 142, to center itself in the space between the turnbutton 114 and the sleeve 96, forming a bearing for the turnbutton, as well as to center the knob at the This completes the assembly of the knob installation.

Making references to Figures, 2.. to, 5 the-l latchingf: as-. sembly illustrated includesr aY front.,plate.143.ffor'supporting the casingV 16 =by meansofthespun1eyelets144 extending over the ange 145. The composite plate Vis set into a mortis'ed section 1.46 ofthe door. The casing 16 guides the mainV latch. 13 to project it through the aperture 148 in the plate 143. A shank. portion 149 of the latch bolt is formed with a guide yslot .150, into which the guide pin 151 projects.. The guide pin is rivetedlin the base at 152. An expansion spring 153 projectsthe latch bolt 13 outwardly against the shoulder 154, adjacent the arcuate groove 155serving asa guide for-the auxiliary latch 156'. The auxiliary latch. 156 has anex-f tension vpin 157 on which is centered an expansion spring 158 of relatively light magnitude. Theopposite end` of the spring is centered on the spring stud 159 driveninto the casing.

The shank 123fis connected at itsfront'endlto the main latch bolt 13 by a crosspin 161 passing through a slot 162, which is extended forv some longitudinal play for purposes which will appearl herebelow. The cross pin 161 serves as the pivot point for the dog 163. The dog 163 has an. elbow 164, against which the plunger pin 165 presses as urged by thespring 166, guidedin an aperture in the latch. bolt head 13; The auxiliary latch bolt 156 has a follower pin 167 normallyguided in the slot 168. On this pin the dog 163 is guided at.-its'camming edge 169. The dog 163 is formed with anintegral pawl member 17) which, in' the inward position ofthe pin 167, strikes the inside face of the base 171 off the casing which acts as a stop against inward pressure. In the outwardly projected position of the auxiliary latch 156, the pin 167 engages the camming surface 169, to raise the dog against the weaker spring pressure of the pin 165 within the slot 172, to clear the base 171.

In the inwardly projected position of the auxiliary latch, pulling of the shank 123 results in an initial movement of this member relatively to the pin 161 and ofthe dog 163 to engage the lug 123a on the shank 123 against the tail 16411 to tilt the dog and move the pawl? tooth 170 clear'of the base 171. Continued movement of the shank draws the assembly of the main latch bolty and dog through the slot 172 in the base of the casing.

On an inspection of Figure 1 it will be clear that wheny the latch 13 has the cammingface 1'47 strike the strike` plate 173 `the forward projecting position ofthe auxiliary latch bolt 156 by reason of the spring 15S being greater than the restraining inuence of the spring 166, willraise the dog 163 to have the tooth 170 clear the edge 171 of the slot and the latch bolt 13 and auxiliary latch willbe depressed by the strike plate 173 against the spring pressure of the main spring 153 the camming portion of the strike 171, the latch 13` enters the latch cavity 174 and the auxiliary latch will be held in the depressed position to dead bolt the latch;

against end pressure.

By the construction described operationl of the mainv from the following: the outside knob 75 is held under tension by the cross pin 68; to the:

assembly will be clear spindle 25, providing a rigid support through the hub driver for the inside sleeve 96. The integration of the inside shank with the hub driver provides'a rigid trunnion for the inside plate 125 toV permit rotatable support for the knob assembly, with a change in position of the plate 125 in accommodating the same to diiferent thick-- nesses of door'frames.

The oscillation of the inside knob 137 drives the hub driver, to move the rear hub and with it the cam. Wings 21 acting against thc cam follower 130,. to retract the plate, to draw the latch draw pin against.

the spindle The outside knob is keyed through the, cylinder casingto the outside sleeve 61 and this, through the pin: 63, engages 'the spindle 25 to rotate the same as the outside knob is oscillated. The front hub 2i?, being: keyed to the spindle, moves with it under the drive of the outside knob to transmit retracting movement to the shoe and plate independently of the movement of the inside knob.

Where it is desired to use the assembly for. communicating doors of bathrooms, to be lockedy from the. inside` whereupon after passing.

side, the pushl button 1f1-4is given a projectingmovement to.: transmit'. through. the.. locking rod. sliding movement of thezfronthub relatively: longitudinally to the spindle, and

to span the. slot 22' over theboss 23;. This` movement looks the spindle against` rotation, and; with4 it restrains the outside knob against rotation.

While in the illustration given, depression. of the locking: rod is effected by turning the turnbutton against the cross-wisely shaped finger portion 121, it will be understood that, where a single cam face 12) is employed for the; follower pin. 118, manual setting andy resetting of the locking rod are required, and also that upon depression andi tunning'. of. the push button 114, the locking rod 84 v will.V be retained in. position, to. hold the front hub: andi outside. knob against rotational-movement.

It is` contemplateda by. me to` provide; camming means` fon the pin 1:18, to-V effect. pushing movement of the locking. rod 34; uponV push button. turning relatively toL the inside knob and upon rotation` of the knob, to cam theVv pin in; the converse position upon oscillation offtheknob towithdraw the lock-ing pin, thereby resetting the lockingmechanismupon-oscillation of the inside knob.

Where key. operation. for the assembly is desired, as iu mounting the assembly for exterior doors, keymovementof the key plug may be effectedtol oscillate the key camdriverv 62'. This latter member being keyed to the keyI plug cam 49S willf, uponmovement by the properkey, engager they camfollower lugs 44 extending through theoutside plate'- and serve to move the shoe 29 carrying latchdraw pin 33 mounted on the plate 31 despite the locked posit-ion of' the fronthub 2t) by reasonof the push button setting; Accordingly, for exterior doors, settingjfor key operation maybe convenientlydetermined by the positionI of the push button 114 in the closed position ofthe door'.

[ft will also beA observed that since key operation ofthe latch draw pin through thevkey plugcam is independent: of the condition of the knob locking mechanism, in se'tting the push button, excessive force by tampering withl the outside knob will` not impair the movement of the key camdriver sleeve for operation by key from the out'- side. Likewise; since the inside knob moves relatively to the spindle 25,. this too may actuate the rear hub and its retractor cam. Excessive force applied to the outside knob tothe point of' fracturing the spindle 2S will' not impair key operation or inside knob operation by the assembly which has been provided.

It will; be particularly observed' that the knob assembly adapts itself readily to a wide range of thicknesses of' doors. and that the tensioning of the inside plate to the outside plate to effect engagement of the assembly to each side of the door has no bixn'lingl influenceon the. knob assembly, to alter factory adjustment oftheoperating parts.

Having thus described my invention and illustrated its use, what i claim as new andA desire to secure by LettersA Patent isz,

l. In a knob operated. lock for a door or thelike havingv al retractor assembly operable by an outside and` inside knob and casing therefor, inside and` outside carn` hubs rotatably mounted onk said casing for actuation of said. retractor, a retractor shoe. operable indejglendentlyl by said inside and` outside cani. hubs, a spindle upon. which. said` inside hub is relatively rotatably mounted, the outside hub. having a keyed` coupling connection.v between saidr outside hub-and said spindle, an.- inside cam hub driver relatively rotatably mounted on said` spindle, having-.support means for said inside knob.

2. In a knoby operated lock for a door or the like, al retractor assembly and casing therefor having` a retractor shoe, aligned; inside. and outside hubs rotatably Amounted in said` casing and. having camming; means theneon to,A actuate said shoe,l a spindle' upon` which said insidehubf yis mounted. for relative rotation, an inside hub drilver rotatably mournedl on. saidl spindle, means on` said' driverv for connecting the inside knob-thereto, a coupling to the outside knob with said spindle, and end` bearing connecting means rot-atablyjoining said hub-driver to said spindle on the inner end portion of said. spindle, saidz outside hub being slidable, a locking rod slidably mounted onv said; spindlefor moving said outside hubto andi from locking engagementzwith said casing.

3. In a knob operated lock for a door andf retractor assembly andfI casing; therefor having a retractonshoe;

aligned inside and outside retractor hubs rotatably mounted on said casing to actuate said shoe, a spindle upon which the inside hub is mounted for relative rotation, an inside hub driver rotatably mounted on said spindle, an axial coupling for said spindle and the outside knob and means joining said hub driver to the inside knob comprising a tubular shank and knob sleeve connected to said hub driver, said outside hub being slidable and a locking rod axially mounted in said sleeve and slidable along said spindle for sliding said outside hub and means on said casing for locking said outside hub against rotation.

4. In a knob operated lock for a door and retractor assembly and casing therefor having a retractor shoe, aligned inside and outside retractor hubs rotatably mounted on said casing to actuate said shoe, a spindle upon which the inside hub is mounted for relative rotation, an inside hub driver rotatably mounted on said spindle, an axial coupling for said spindle and the outside knob and means joining said hub driver to the inside knob comprising a tubular shank and knob sleeve connected to said hub driver, said outside hub being slidable and a locking rod axially mounted in said sleeve and slidable along said spindle for sliding said outside hub to and from said casing and means on said casing for locking said outside hub against rotation, a rotatable draw ring for said locking rod mounted within said sleeve and cam means for said ring to cam said locking rod in selected positions.

5. In a knob operated lock for a door and retractor assembly and casing therefor having a retractor shoe, aligned inside and outside retractor hubs rotatably mounted on said casing to actuate said shoe, a spindle upon which the inside hub is mounted for relative rotation, an inside hub driver rotatably mounted on said spindle, an axial coupling for said spindle and the outside knob and means joining said hub driver to the inside knob comprising a tubular shank and knob sleeve connected to said hub driver, said outside hub being slidable and a locking rod axially mounted in said sleeve and slidable along said spindle for sliding said outside hub to and from said casing and means on said casing for locking said outside hub against rotation, a rotatable draw ring for said locking rod mounted within said sleeve and cam means for said draw ring to cam said locking rod in selected positions, a cam follower pin mounted on said ring, said cam being effective to slide said rod upon rotation of said ring movably relatively to said locking rod.

6. In a knob operated lock for a door or the like, a retractor assembly and casing therefor, inside and outside hubs rotatably mounted on and within said casing, a retractor shoe operable by said hubs independently of each other mounted inside said casing, a plate for carrying said casing and through which said outside hub extends outside the casing, a cam mounted on said outside hub on a portion extending outside of said casing, cam follower lugs on said shoe extending through said casing in the path of said cam and a key operated assembly for operation on said lugs to independently actuate said shoe.

7. In a knob operated lock for a door or the like having a retractor assembly and casing therefor, inside and outside hubs rotatably mounted on said casing, a retractor shoe within said casing connected to said hubs independently operable by said hubs, said retractor shoe having a draw pin, cam follower lugs carried by said shoe extending through said casing and a cam externally mounted on the casing for operating said cam follower lugs to slide said shoe and a key controlled sleeve to which said last mentioned camis operatively connected.

8. In a knob operated lock for a door or the like having a retractor assembly and casing therefor, inside and outside hubs rotatably mounted on said casing having cams within said casing, a retractor shoe within said casing operable independently by said cams, cam follower lugs slidably guided and extending through said casing for independent actuation at their extended portions, said outside hub being longitudinally slidable relatively to said casing and having cooperating locking engaging means with means on said casing, and a cam coupled with key operable means engaging said cam follower lugs extended portions for transmitting retracting movement to said shoe independently of the outside hub.

9. In a knob operated lock for a door or the like, a retractor assembly having a casing for operation by inside and outside knobs, said retractor assembly having inside and outside cam hubs aligned within the casing,

a retractor shoe independently operable by said cam hubs, a draw pin on said shoe for connection to a draw bar of a latch bolt, said outside cam hub being slidable along its axis relatively to said casing, locking means on said casing for engagement with said outside hub, a spindle for mounting said outside hub, said shoe having cam follower lugs extending through said casing, a key controlled driver having a cam for engaging said lugs for operation of the shoe independently of the position of said outside hub.

l0. In a knob lock for a door or the like having a retractor assembly in a casing to be retained in a cross boring of said door, said casing including a retractor shoe, an inside cam hub rotatably mounted on said casing having connecting means with said shoe to transmit retracting movement thereto, an outside cam hub rotatively and slidably mounted on said casing for longitudinal movement independently of the lirst hub and having connecting means with said shoe to transmit retracting movement thereto, a shoe plate including cam followers extending through said casing to an exterior wall thereof, a spindle on which said outside cam hub is mounted, an outside knob sleeve keyed to said spindle by a cross pin, a cam driver member for said cam followers rotatable within said outside knob sleeve having an arcuately extended clearance slot through which said pin passes and a locking rod operable by manual means on said inside knob for slidably moving said outside hub into and out of locking engagement with said casing, a cam on said outside hub connected with said spindle and a key controlled assembly operable independently of the outside knob sleeve for actuating the cam driver member for said cam followers.

ll. A knob operated lock for a door having, in combination, a retractor assembly and casing therefor, inside and outside hubs rotatably mounted on said casing, a retractor shoe operable independently by either of said hubs, a spindle having keying coupling means for said outside hub and means on said outside hub for engagement with said casing to lock the same against relative movement, said inside hub being rotatably mounted on said spindle, a shoe plate connected with said retractor having cam follower pins extending through said casing and a camming actuator for said follower pins to one side of said casing to transmit retracting movement, an outside knob sleeve aligned on said spindle having a cam driver sleeve for said actuator rotatably mounted in said outside sleeve, a pin connecting said outside sleeve and said spindle, a key plug assembly having a connector to said cam driver actuator operable independently of the spindle for said outside hub.

l2. A knob operated lock for a door having, in combination, a retractor assembly and casing therefor, inside and outside hubs rotatably mounted on said casing, a retractor shoe operable independently by either of said hubs, a spindle having keying means to said outside hub and complementary engaging means on said outside hub for engagement to locking means on said casing, said inside hub being rotatably mounted on said spindle, and having a knob connected therewith, said shoe having cam follower pins extending from the inside of the casing to project through said casing to the exterior side wall, an outside knob having a sleeve aligned on said spindle, a cam therefor, a key driver sleeve rotatably mounted in said outside sleeve connected to said last cam, a pin connecting said outside sleeve and said spindle, a key controlled plug having a cam driver operable independently of the spindle for actuating said cam follower pins, an inside shank for an inside knob, an inside sleeve mounted on said spindle and a locking rod operable along said inside sleeve coupled to said outside hub to move the same into and out of locking engagement with the casing.

13. A knob operated lock for a door or the like having, in combination, a retractor assembly and casing therefor including a draw pin for connection to a latch bolt, a retractor shoe, an inside and an outside hub for camming the shoe rotatably mounted on said casing, a spindle for said hubs, an inside knob, an inside hub driver rotatably mounted on said spindle and rotatable with said inside vknob for relative rotation on said spindle, said outside hub being slidable on said spindle for movement relative to a supportmg plate, stop bosses providing locking means on said plate for said outside hub, said shoe plate having F cam follower lugs extending through said supporting plate 'i a key controlled plug having a driver cam rotatably mounted on said outside hub, a knob sleeve and cam driver sleeve each coupled to said spindle and key plug, respectively, and concentrically mounted, said cam driver sleeve being operable to move the key plug controlled cam independently of the locked position of the outside hub, to retract the shoe plate.

14. A knob operated lock for a door or the like having inside and outside knobs in alignment, in combination, a retractor assembly and casing therefor including a draw pin for connection to a latch bolt, a retractor shoe, inside and outside hubs for camming the shoe rotatably mounted on said casing, a spindle passing through said hubs, an inside hub driver rotatably mounted on said spindle and extended within said inside knob, for relative rotation of said driver and knob to said spindle, an outside hub slidable on said spindle for camming a retractor shoe plate relative to a supporting casing plate, locking means on said casing plate for engagement by said outside hub in one position, said shoe plate having cam follower lugs extending through said supporting plate, a key controlled plug cam rotatably mounted on said outside hub, a knob sleeve and key controlled cam driver sleeve rotatably mounted and longitudinally keyed to said spindle and key plug, respectively, and concentrically mounted, said key cam driver sleeve being operable to move the key plug cam independently of the locked position of the outside hub, to retract the shoe plate, a locking member comprising sliding means for said outside hub guided in said spindle and engaging said outside hub and manually controlled means on said inside knob for adjusting said outside hub in locking position comprising push button means mounted on said knob.

15. A knob operated lock for a door or the like having inside and outside knobs in alignment, in combination,- a retractor assembly and casing therefor including a draw pin for connection to a latch bolt, a retractor shoe, inside and outside hubs for camming the shoe rotatably mounted on said casing, a spindle passing through said hubs, an inside hub driver rotatably mounted on said spindle and extended within said inside knob, for relative rotation of said driver and knob to said spindle, an outside hub slidable on said spindle for camming a retractor shoe plate relative to a supporting casing plate, locking means on said casing plate for engagement by said outside hub in one position, said shoe plate having cam follower lugs extending through said. supporting plate, a key controlled plug cam rotatably mounted on said outside hub, a knob sleeve and key controlled cam driver sleeve rotatably mounted and longitudinally keyed to said spindle and key plug, respectively, and concentrically mounted, said key cam driver sleeve being operable to move the key plug cam independently of the locked position of the outside hub, to retract the shoe plate, a locking member comprising sliding means for said outside hub guided in said spindle and engaging said outside hub and manual means on said inside knob for adjusting said outside hub in locking position comprising push button means mounted on said knob, and including camming means on a sleeve for said inside knob.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 626,341 Phelps June 6, 1899 1,043,750 Arens Nov. 5, 1912 1,991,031 Schlage Feb. l2, 1935 2,264,239 Hirsch Nov. 25, 1941 2,282,213 Rolph May 5, 1942 2,299,180 Schlage Oct. 20, 1942 2,497,750 Wardwell, Jr. Feb. 14, 1950

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