US2620646A - Door lock - Google Patents

Description

Dec. 9, 1952 y F. MccoNNELL DOOR LOCK Filed Sept. 10. 1948 FIG.

LII. mi H.

:j A a HIMI \6/ lNvENTR 69 l FRA/wr Nca/vK/vfzz 1/ ATTORNEYS Patented Dec. 9, 1952 Doon Loox Frank McConnelLNew Britain, Conn., assigner to The AmericanHardware Corporation, New Britain, Conn., a corporation of Connecticut Application September 10, 1948, Serial No. 48,626

(Cl. 'Y0- 211) Claims. l

My invention relates to a latch-actuating and dogging mechanism. Y It is an object of the invention to provide an improved device in the character indicated.

It is another object to provide an improved clogging mechanism complete in itself and read-A ily adaptable to Ya more or less conventional latch mechanism. l

It is a lfurther object to provide an improved dog-control mechanism for a latch, wherein the dogging function may be independently controlled from either side of the door to which the mechanism is applied.

' It is a speciiieobjectto provide a unitary rosette-and-door-handle construction adaptable directly to control-a latch mechanism and incorporating dogging means selectably operable from either side of a door.

It is another specic object; to provide an improvedlateh-actuating unit incorporating dogging means and self-aligning parts, whereby upon adaptation'to a'latch mechanism slight axis misalignments may not impair a proper functioning.

It is still another specic object to provide an improved unitary latch-actuating mechanism and door handle and key-operatedV lock, wherein part of a doggingmechanism is operated by the lock and wherein the key tothe lock may not be removed unless the part operated by the key is in its dogging position. "v f Itis a'further specific object to provide an im-A proved doggingv mechanism for aV latch and utilizing two Vrelatively movable yet independently operable-parts whichma'y dogpthe latch when mutually engaged. y

Other f objects and variousfurther `features, of the inventionwill'be pointedout or'will'occur to Athose skilled inthe art from a reading of the following specification `in conjunction with Ythe accompanying drawings. In said drawings, which show, for illustrativeA purposes only, a preferred form of theinvention: f' v Fig. l is a side view in partialsection of a latch mechanism to which a novel unitary rosette and door knob have been applied in 'accordance with the inventiony .v Y -Fig. 2 is anenlargedhorizontal sectionalviw of the knob-and-rosette parts :of the assembly of l, taken more or less in the plane 2-2of Fig 1;Y

@Figi 3 isan endviewof .the device of Fig. `2, with'the rosette cas'e'sectioned more or `less in the-plane 3-3 of Fig..2, the partsof Fig'. 3 being shownzinaA different relationship thain Fig..2; Fig-.4 is afragmentaryview of certain partsof 2 the structure of Fig. v2, the view being taken in the same sectional plane as that of Fig. 2, but with the parts in still another relationship;

VFig. 5 is a sectional View taken in the plane 5-5 of Fig. 2, and;

Fig. 6 is a sectional view taken in the plane 5 6 of Fig- 2.

Broadly stated, my invention contemplates an improved latch-dogging means which may be employed for the selective dogging of a latch from either side of a door. The dogging means may utilize two engageable yet relatively movable elements, one of which may be actuated from one side of the door and the other of which may be actuated from the other side of the door.

In the form to be described, a latch-actuating mechanism is selectably dogged, and this mechanism includes an axially slidable coupling member keyed at one end to a latch-spindle member and at the other end to a door-handle member, and all three members may be unitary in a rosette-and-knob assembly. The knob may carry a built-in key-operated cylinder lock arranged to determine axial placement of the coupling member in or out of possible engagement with the doggingmember, and the means for actuating the dogging member may face toward the other side of the door, for engagement with suitablevspindle means which may pass through the door.

Referring to the drawings, my invention is shown in application to a unitary rosette'structure I0 with a transversely extending spindle II to engage the roll-back means I2 of a tubulartype latch I3. The latch I3 may be inserted in a sing-le bore I4 from the edge of a door'I5, `and the latch front I5 may be sunk flush into the edge of the door I 5 and held by mounting screws (not shown) in the conventional manner. Rotation of the spindle I I will be understood to cause gear means on the roll-back I2 to engage the rackll on a latch carriage, so as to withdraw the latch bolt I8. The latch case I3 may include openings, as at I9, at opposite sides thereof for the transverse passage of a further spindle 20 to operate clogging means of the invention. The latch I3 maybe of a type disclosed in greater detail in my copendingV patent application -Serial No.l 748,703, filed May 17, 1947. I f

In accordance with the invention, I provide a novel structure external of the latch assembly I3 and adaptable thereto for lthe selective findependent dogging of handle operation from `either sideof the door. 1 This selective dogging'function may be achieved by the use of two relatively displaceable members, one of which may be actuated from one side oi the door for displacement in or out oi possible dogging engagement with the other member, and the other of which may be actuated from the other side of the door in or out of possible dogging engagement with the rst member. In the form shown, one of these relatively displaceable members is in the form of a longitudinally travelling Anut or coupling 2| which is locked (as by keying) against rotation relative to the spindle I and relative to the outside knob or handle 22. The keying may be achieved byintertting square ends, as when flats such as the flats 23 of spindle are inserted into a squareshaped socket 24 inside one :end of the'couplin'g member 2|; in similar fashion, 'square flats 25 on the shank of the handle 22 may t in a square socket 26 at the other end of the coupling Ymember 2 In order longitudinally'to position the coupling member 2|,v it may be internally threaded for threadedjengagement, as at 21, with a threaded member 2.8: which is shown vto have a boss journalled inA -a bore 29r within the knob 22. The threaded member 28 is preferably axially fixed relatively to the knob 2,2 and to the spindle but it is rotatable relatively to the knob 22; and, hencey relatively to the coupling member 2| and to-thespindle Themember 23'may be axially locatedby abutment vat one` end of its threaded part wit-h a shoulder n33|) on the knob 22 and by the seating; of aI ball 3| between the spindle and theuthreaded imember 23. The ball 3| may be seatedv inA generally spherical concave surfaces formed in the lspindle||V and in the threaded member 28. For Yactuating purposes, the threaded member 28 may include keying means, such as alongitudinally extending square hole32, foreng'agement with an actuatingl spindle 33.

The assembly of the parts thus far described is, `in the form shown, held `together upon the crimping or rolling of an outer edge 34 of a rosette Yframel member or case l354.Y The frame member 35 mayv be formed with a cylindrical inner surface 3,6 slidingly to support the outer cylindrical surfacej 3`6f oi the coupling member 2|, and an inwardly extending ange or lip 31 may ride upon ormsupport a suitable.. bearing surface 38 of the knob. 22. A snapV ring 39. seated in :a groove in the surface 38 may serve to retain the handle or knob 2,2 and the rosette frame member 35 in assembled relation. y Y

The rest of the rosette frame mayinclude a backcover-plate member 4i) having ya flange held by the beaded orrounded -edge` 34 and formed with aninner cylindricalsurface 4| slidingly to sup'port the outer cylindrical surface 42 of -the coupling, member 2|. (seeFig. 4). At its inner end the cylindrical part of the" frame member 4|) may also include an inwardly directed lip'or flange 43 to'engage the -circular rim 44 on the head of spindle It willbe appreciated that when assembled between `the I rosettev `frame members 35,440, the-spindle |f|,`they ball 3|, the threaded member 28, andthe-knob 22 may all; be axiallylocatedwith respect. to each other; and, should there be any misalignment upon installing the rosette, that is, should the knob axisjbeY slightly cocked or eccentric with` respect to the axis of the roll-back |201' the latch mechanism,` 'a slight clearance or freedom betweenthe square keying surfaces 2,4.-23 may permit proper centering on the bauel. ,v e

Thus far, Ihave described'only thejworking partswhich -a`c'scount for longitudmal positioning 75 4 of the coupling member 2|. It will be Iappreciated that such longitudinal positioning may be produced upon the relative rotation of the knob 22 and of the actuating spindle 33, as by turning the key 5G of a cylinder lock 5|, which may be mounted within the kno-b 22 and assembled with the spindle 33. The cylinder lock 5| may be of conventional construction a'ndfincl'udega plug 52 to ride lin la suitable counterbore- 53vv within the handle 22. The plugV 52 and, hence, the cylinder lock 5| may be xedly retained within the knob 22 when a spring-urged pin 54 on the plug 52 drops into an annular groove 55 in the counte'rbo're surface, las will be understood. In accordance withypra'ctice, the knob shank lmay include a small hole (not shown) communicating radially with the groove 55, so that, when the key has been turned an appropriate amount to align the spring pin 54 with the said radial hole, a suitable tool may be inserted to depress the pin and permit axial removal of the lock 5| lfrom the knob 22. e

'For a purpose which willlater be clear, the plug 53 preferably carries an abutment, which Imay be a xedgpin 56 or other suitable abutment means, fory abutment with a shoulder or the like 5'| -in the frame or bodyof the knob 22. The abutment means 56-57 will be understood to limit -rotation of the key 50 in thelock 5|, 4and the arrangement is preferably such that this limiting of abutment occurs when the key 50 is in position for withdrawal from the lock 5| and when the coupling member 2| is in a forward or dogging position, as will bev more fully understood later. The abutment 51l will be understood to be above the plane of the drawing, inthe sense, of Fig. 2. Thus, for the arrangement shown, the abutment means 56--51 may prevent counterclockwise key rotation (as` viewed from the side of the door from which the key is inserted) immediately after inserting the key. The only available freedom for the key 50 will then be for clockwise rotation, andthe abutment means 5'6-51 will be underf stood to limit such rotation tol less'than one revolution of the key. Thev pitch or lead in the threaded member or screw 28 is preferably such as to-- producev a, substantial longitudinal Withdrawal of the coupling member'2l from the position shown in Fig. 2 to the position shown in Fig. 4, within a fraction of a revolution of the key-50, and, in the vformshown, a-double-lead 'thread' on they screw 2-8Y mayl produce such. withdrawal in three-fourths of arevolution ofthe key.

Thus-far, I have described merely the parts and lthe actuating means for positioning the threaded member or screw 28 and for position# ing thefcoupling member 2|, and I have indicated generally that vthe framework `35-'40 -of the rosette structurel may fncorporate dogging means "actuable independently ofV the `movement of the coupling member 2|"and accessiblefor actuation from the other side of the doo-r, as by. means of the dogging spindlek 2|)A upon actuation of a control handle or lever 59. Such dogging means preferably includes-a member that is shift;- able in a sense different from the vcharacteristic movement of the coupling` member ;2|, and.; in the form shown, a dogging projection 60 -on a slidable dogging member4 6| is generally trans.- versely or radially slidable to engage a generally longitudinal groove -62 in they coupling member 2|. The projection or dog 6D may be formed upon` stamping out` anj enlarged oval opening 63 in the rdogging plate '61,: and such opening'63 is preferablysuicent. to, clear `the outer cylindrical surface 42 of the coupling member 2| The plate 6I may be guidingly supported between opposed parallel sides by means of chord plates` or suitably formed shoulders 64-65 formed in or carried by the frame member 35 of the rosette.

For shifting purposes, the dog plate 6I may be eccentrically engaged with a gear member 68, as by means of a pin or other abutment means 66 on plate 6I projecting into a radially extending actuating slot 61 in the gear 68. The gear 68 may be annular with an inside diameter to derive free rotary and sliding support from the cylindrical surface 42 of the coupling member 2 I. In order to actuate the gear 68, a drive pinion 69 may mesh with gear 68, and pinion 69 may include suitable actuating means, such as a socket 10, to be engaged by the spindle 20.

In the position shown in Fig. 3, it will be appreciated that the dogging lever 59 has just been raised in order to crank the pinion 69 clockwise (in thesense of Fig. 3) and at the same time, to drive the annular gear 68 counterclockwise for a downward displacement of the pin 66 and, hence, of the dog 60. Such downward displacement will be understood to have drawn the dog 60 radially out of alignment with the slot 62 and out of possible dogging engagement with the coupling member 2|. yUpon depressing the dogging lever 59, the annular gear 68wi1l be driven clockwise so as to raise the dogging slide 6I and to engage the dog 60 with the slot 62 (or, rather, to place dog 60 in a position to engage the slot 62), thus producing the lrelationship of parts shown in Figs. 2 and 4 as far as the dog 60 is concerned.v

. In order to assureretention of one or the other of the two described positions of the dogging lever 59, any conventional snap-action means may be employed and, in the form shown, I provide spring means 'I2 with e, gently rounded end to rest against a pin or other suitable abutment 'I3/carried by the plate 6|. The spring 'I2 may be located by slipping it over one of the bosses 46 that is xedly carried by the rosette frame mem*- ber 35'.

lfdesired, and for purposes of greater adaptability of myL unitary. rosette-and-handle c onstruction, a further pinion gear 15, like the gear 69, may be in constant engagementwith the ring gear 68and may include a suitable socket 16 to engage a` dog-actuating spindle 20' similar to the spindle 20, depending upon the mounting of the door. l' Both gears 69 and 15 may be formed with bosses or journal portions 'I1 to ride in suitable locating and supported holes 18, Ywhich may be punched. at preferably diametrically opposite points in the rosette cover plate 40, as will be clear.

Abetter understanding of the above-described construction maybe had from a brief operating description. Let it be assumed that the parts are' in the relationship of Fig. 2, with the knob 22 on the outside of the door and with the dog 60 in`engagement with the coupling member 2|. Y In this relationship of parts, the inside knob (not shown), which may also drive the spindle II, will be unable to operate the latch mechanism I3 because it will then bek keyed to the coupling member 2 I, which, in turn, will have been dogged against rotation at 62. In order then to get out of 4the room, one must first operate the dogging lever 59 so as to shift the dog downwardly to thev position shown in Fig. 3 and out of possible engagement with the slot 62 of the coupling member 2|. This operation of the lever 59 willbe also understood to have freed the outside knob 22 for independent operation of the door-latch mechanism I3 from the outside of the door.

Thus, to lock the door, it will be necessary deliberately to shift the lever 59 so as to place the dog 60 within the groove 62 (see Fig. 2), or in a position to engage the groove 62 (see Fig. 4).

Placement of dog 60 within the groove 62 will, of course, be understood to have dogged both the inside knob (not shown) and the outside knob 22 against operation of the latch mechanism I3, and it will be appreciated that the door cannot be opened from the outside until the key 50 is inserted in the lock 5I and until the lock 5I has been turned an amount sufficient to withdraw the coupling member 2| axially out of possible dogging engagement with the dog 60, as shown in Fig. 4. Since the key will not then have turned a complete revolution, and since the abutment means 56--51 will prevent one from turning the key a full revolution, it will not be possible to remove the key 50 as long asthe relationship of parts shown in Fig. 4 still exists, and, of course, when the key has been operated in this manner, both handles for the spindle I I may be freely operated. In order, then, to remove the key 50, it must be turned back into the position shown in Fig. 2, and this movement necessarily will compel a return of the coupling member` 2|` intoV dogging engagement, or at least into possible dogging engagement, with the dogv 60. It will be noted that, in utilizing the key to open the door from theV outside, there is no disturbance of the lock, as set from the inside; thus, the inside setting of the lock will not be changed either by key-operated opening of the door or by subsequently closing the door.

It will be appreciated that I have described an ingenious mechanism for application to a more or less conventional latch mechanism. My improved construction may be unitarily assembled of easily fabricated parts and thus may provide an inexpensive means for introducing selective dogging functions in a latch mechanism. The dogging functions may be independently controlled from both sides of the d-oor, and, when one of these functions is key operated, the key may not be removed unless the door is locked from the outside. My mechanism will function well in spite of careless misalignment in mounting to a door, and the fact that both the independently controlled dogging elements are operated by threaded or gear means will be understood as indicating a long life for the structure.

While I have described my invention in detail for the preferred forms shown, it will be understood that modifications may be made within the scope of the invention as deiined in the following claims.

I claim:

1. In a latch device of the -character indicated, latch-actuating means, two relatively movable interengageable dogging members for dogging said latchactuating means when in engagement with each other, means including yan axially fixed rotatable member actuable from one side of the latch for moving one of said members into and out of a dogging position, and means including an axially ixed rotatable member actua-ble from the other side of the latch for moving the other of said members into and out of a dogging position, whereby the latch may be undogged upon an operation from either side.

2. In. a device ofthe character indicated, an outside knob, a cylinder lock in said knob, an outside rosette, and `means on the inside. for holding said rosette against a door,alatchactuating spindle lieyed tolsaidknob-at all times, clogging means in said rosette and' including two independently and relatively `movable `clogging members .movable into and out-ol mutual engagement, said-'knob being dogged only when said members are .iny .engagement with Veach other, means operated- .by said 'lock -for moving one of said membersrelatively to a `position in which -it may be engaged byv the other vof said members., and! means operable from theinside for moving the other of said members relatively toa position 1in Which-itlmay be eri-- gaged `by saidv one'rnemberl In :a deviceof vthe characterA indicated-i, an outside knob, a cylinder lock in saidfknob, anl independently longitudinally movable coupling member including a dbg -element carriedY thereby, said-coupling member being arranged at-al1 ltimes' to lcouple said k-nob tol a latch'spindle-to be actuated, a yfurther independently movable `dog elementimovable tov engage said iirst dog element andi to dog' said coupling member when in engage-y mentl with said rst dog element, and connecting means between said coupling .member and said lock-for l'ongitudinallymoving said coupling member-cult of the-clogging position.

4. A device accord-ing tothe claim-I3, 'in which meanslioperable from the inside are #connected 'to operate said further dog. elementtout-of itsvdo'gging position.

'5; In a latch ydevice of the character indicated, rotatable latch-actuating means `for hand opera-- tion atboth sides of adoor', .doggi-ng means for saidjlatch-actuatingimeans for selective operation from-either sideof the door, saidl'dogging means including an independentlyrandl .generally longitudinally movable member and an 'independently and generally transversely movable member, said members being movable into and out of engagement with each other and cloggingV said latch-actuating means when in engagement with each other, means actuable from one side of the door for moving one of said members. relatively toits clogging position, and means actuable from the other side of the door for moving the other of said' members relatively to its clogging position.

6. As an article of manufacture, a rosette assembly for application to a door-latchmechanism, said assembly including rotatable and longitudinally movable latch-'actuating means engageable With the latch mechanism, independently movable dogging means doggingly engageable with said latch-actuating means in one `longitudinal position of said latch-actuating means and free of said latch actuating means in anotherlongi- -tudinal position of said latch-actuating means, axially fixed rotatable means accessible fromy one side of the door and in longitudinally propelling engagement with said latch-actuating means for selectively longitudinally positioning. lsaid. :latchactuating means out of possible: doggin'g engagement with said clogging means, and means accessible from the other side of the door foractuating said: dogging means.

7. In a rosette assembly of the character indicated, al spindle for engagement with a latch, manual-actuating means for said spindle, longitudinally slidable coupling means keyed both to saidv spindle and? to said -manual actuating means, means threadingly engaging `said coupling member for longitudinal placement of said coupling member and longitudinally positioned between said spindle and said manual means, and dogging means transversely -movably rengageablewithV said coupling memberl in onel longitudinal position thereof for Ydogg'i-ng saldi coupling lmember against rotation, said dogging means being tree of said.

coupling-member When-said-.coupling member islin` another longitudinal position, said threadedv means` being actuably accessible from lthe-sideon which 'said manual means is located and' yindependent of said manual means.

8. Ina rosette assembly of the character indicated, longitudinally `slidablerotatablelatchactuating means, clogging means including a ygen-- erally transversely l.movable `portionforl -do'gging said latch-actuating vmeans against'rotation, said dogging means being engageable with said latchactuating means in one longitudinal position o1" said' latch-actuating meansv and out of engagement therewith in yanother longitudinal pos'itionof said latch-actuating means, aknob keyed tol-rotate Withsaid. latch-actuating means, threaded means rotatable relatively to saidknob and threaded engagement With saidlatch-actuating' means, and a key-operated -lock` in said knob and 'includ-ing means y'engaging said threaded means, whereby saidlatch-actuati'ngmeans may be longitudinally positioned in and?ontof'doggingA engagement uponI key-operation-of said lock. Y v

v9. A device accordingtoclaim, inw-nich abutment means cooperating .between a rotatable-part of saidl'ock and said knob serve to -l-imit key'- operatedl rotationofsaid threaded means, Whereby the key for said lock vmay be removed *only When said latch-actuating means is positioned for a--dogging operation. v

10. In a rosette assembly of the character indicated, rotatable latch-actuating means including manual means for operation from the' side of the door-on which the rosetteY is vmountedsjdogging means for dogging said latch-actuating means against rotation, said dogging means including a member-slidablyy guided in the frame of said `rosette and `including a projection toV dog said `latch-actuating means, ga 4gear rotatable on the Aaxis of said` latch-actuating Ameans vand including lmeans toV engage a part 'of `said slidable member for a forcible displacement of saidslidablermember upon rotationof said gear, a further gear 'meshing with said first gear and/supported forrotation ony an axisoifset vfrom the axis or said 4latchactuating means, 'said' second gear including means actuably accessible `from thel other side ofY the-door; whereby said slidable member may be selectably dogged' to' said. latchactuating means" from the side of Athe door opposite said; manual means. i

lli-A devioecaccordin'g yto 'claim l0', in which' said'- latch-actuating `means has a longitudinally extending groove open atV one axial end thereof for engagement with a part. of saidslidable member,` and in `vvliichgsaid latch-actuating means is longtudinallyLs'lidable, `whereby upon a 'longitudinal vsliding of said" Ilatcli-actuating means' said gro-ove may begpositioned inv orout of engagement withsaid sliding member' lwhen said' slidable member 'has beenset vfor the dogging engagement. f

l2; In alatoh device of the'character indicated, a latch spindle, ma-nual means iorv operating said latch spindle, a threaded member; axially positioned between said spindle and ,said manual member and rota-table`re1atively thereto, a cou- Apling.v member longitudinally slid'ably keyed to' both saidspindle and said Amanuall means and in threaded? erigafgementgwtn -sa'idthreaded Imem*- ler, 4and dogging mea-ns for -sa-idj coupling mem- 13. A device according to claim 12, in which said spindle and said threaded member are formed with concave seats and in which a ball is supported between said seats, whereby there may be slight malalignment of the axes of the said threaded member and of said spindle without impairing the cooperating functions of these elements.

14. In a latch device of the character indicated, latch-actuating means including a, spindle, dogging means for said latch-actuating means and including two relatively movable interengageable members, each of said members being independently movable in and out of a dogging position, said members being engaged to each other when in dogging position, said latch-actuating means being dogged only when said members are in engagement with each other, means actuable from one side of a door for moving one of said members relatively to the clogging position thereof, and means actuable from the other side of the door for moving the other of said members relatively to the clogging position thereof.

15. In a latch device of the character indicated, a longitudinally displaceable rotatable latch-actuating element having means at opposite ends for non-rotatable longitudinally slid- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number l Name Date 728,755 Patrick May 19, 1903 1,449,967 Belford Mar. 27, 1923 2,370,645 Falk Mar. 6, 1945 2,373,400 Kaufman et al Apr. 10, 1945 2,442,763 Falk June 8, 1948 2,482,926 Milligan Sept. 27, 1949

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