US2724607A

US2724607A - Door lock

Info

Publication number: US2724607A
Application number: US293338A
Authority: US
Inventors: Leland H Fisler
Original assignee: American Hardware Corp
Current assignee: Emhart Industries Inc
Priority date: 1952-06-13
Filing date: 1952-06-13
Publication date: 1955-11-22
Anticipated expiration: 1972-11-22

Description

NOV. 22, I H FlSLER DOOR LOCK Filed June l5, 1952 2 Sheets-Sheet l Nov. 22, 1955 L.. H. FlsLER 2,724,607

DOOR LOCK Filed June 13, 1952 2 Sheets-Sheet 2 25 29 la if A 3] n X A* g ik" T Y r 63 n* mi i 1 A [6,5 Wr' 76 5r p A? l f g3 'gfl Y ..7` L i Y. 42M 7A 23 33 INVENTOR. g2g/VD fluff? United States Patent O Doon LOCK Leland H. Fisler, New Britain," Conn., assignor to The American Hardware Corporation, New Britain, Conn.,

a corporation of Connecticut t Application June 13, 1952, Serial No. 293,338

12 Claims. (Cl. 292-169) `of the latch bolt operated by said mechanism.

The invention, as illustrated herein,is embodied in the cylindrical door latch operating mechanism `disclosed in the co-pending application of Leland H. Fisler et al., Serial No. 269,168, filed January 31, 1952, and entitled Door Latch Operating Device. Said mechanism constitutes a latch operating unit `which is particularly intended for passage functions and is adapted to receive, through the rotatable spindles thereof, other components that co-act with the elements in the basic unit to render to said unit various locking functions `such as exemplied in the co-pending application of Leland H. Fisler et al., entitled Door Lock, Serial No. 272,338, tiled `February 19, 1952, now Patent No.2,694,9l9, issued November 23, `1954. It will be understood from said co-pending application that the various components are insertable into the basic unit without requiring complete disassembly of said unit. r t

The primary object of the present invention is the provision of dogging means, for a cylindrical door latch operating mechanism such as shown and described in the first mentioned cofpending application, which are insertable into `said mechanism through the inner spindle thereof and include a dogging bar which is easily manipulated into position within said mechanism and co-acts with a portion of said `spindle in a novel manner` to cause movement of said bar into dogging position wherein operation of the outer spindle is prevented. i

Another object of the invention is theprovision of a cylindrical door lock having dogging` means therein including a dogging bar `which is moved into dogging positionby cam meanscontained within said door lock.

A further object of the invention is the provision of a p cylindrical door lock having a dogging bar carried in the inner spindle thereof which is movable` by cooperative cam means on said bar and spindle into dogging position wherein operation of `the outer spindle is prevented.

A still further object of the invention is the provision of a dogging unit which is insertable into a cylindrical door lock havingan abutment therein and includes a dogging bar that is movable by cam means thereon, into dogging position wherein operationof the outer spindle is prevented. r

A still further object of the invention is the provision of dogging means for the outer spindle of a cylindrical door lock, which are contained entirely within the inner spindle of said lock. p

Further objects and advantages of this invention will be more clearly understood from the following description and the accompanying drawings in which:

Fig. 1 is a plan View of a` cylindrical door lock, partially in central horizontal section, illustrating my novel dogging 2,724,607 Patented Nov. 22, 1955 means and the position of the dogging bar included therein when in undogging position.

Fig. 2 is a front view of said door lock, partially in central vertical section, further illustrating the dogging unit.

Fig. 3 is an end View thereof partially in section on line 3 3 of Fig. 2.

Fig. 4 is a similar View on line 4-4 of Fig. 2.

Fig. 5 is a sectional end view of a portion of said lock, taken on line 5-5 of Fig. 2, further illustrating the construction of my novel dogging unit.

Fig. 6 is a similar View on line 6 6 of Fig. 7.

Fig. 7 is a fragmentary view of a portion of the inner spindle of the door lock illustrating the turn-piece employed for actuating the dogging` bar included in the dogging unit.

Fig. 8 is a view similar to Fig. l, but showing the dogging bar in dogging position.

Fig. 9 is a plan view, again similar to Fig. 1, illustrating a modified form of a dogging bar for use in the door lock.

Fig. 1() is an end view of the push button used for actuating the modified form of dogging bar.

Fig. l1 is a side View of said push button.

Fig. 12 is an isometric view of the dogging bar employed in the door lock illustrated in Figs. l through 8.

Fig. 13 is a similar view of the modified dogging bar.

Referring to the drawings, it will be noted that the cylindrical door latch operating mechanism disclosed therein is the same as that disclosed in said co-pending application of Leland H. Fisler et al., Serial No. 269,168, filed January 31, 1952. For the purpose of clarity the entire mechanism will now be described.

The door latch operating mechanism includes a casing, generally indicated at 5, which houses` and supports the latch operating mechanism and includes an inner end plate 6 and an outer end plate'' having integral tubular sleeves 8 and 9 extending therefrom respectively. The end portion of each of said sleeves 8 and 9 is of a reduced diameter.

A `retractor guide 16 is secured between the end plates 6 and and said retractor guide is in the form of a U- shaped member having an upper and a lower leg `11 and 12, respectively; the inner surfaces of which are provided` with longitudinally extending grooves 13-13 for the reception of ball members 14 which support a retractor 15 in the retractor guide. The said ball members 14 are maintained in proper relative position by means of cages 16.

The retractor 15 is formed from a single piece of sheet metal and includes an inner side 17 from which is bent an upper leg 18 and a lower leg 19. The rear portion of each of said

legs

18 and 19 has an

extension

20 and 21, respectively, which is bent inwardly, parallel to the side 17, to form the outer side of the retractor. The inner side 17 of the retractor is also provided with extensions which are bent perpendicularly to said side and `extend across the retractor to provide rollback engaging portions 22-22 thereon. The extensions Ztl and 21 forming the outer side of the retractor and the rollback engaging portions 22-22 are spaced apart to provide a horizontal opening 23 which extends through a portion `of the inner side 17 of the retractor, as indicated at 23-a, for a purpose to be hereinafter described. The outer ends of the

retractor legs

18 and 19 are provided with oppositely disposed ngers 24-24 which engage lugs on the end of a retractor bar 25 that is secured to the latch bolt 26 of a conventional latch unit 27; said unit eing fastened to the casing 5 in a manner well-known to those versed in the art.

The outer surfaces of the retractor legs `18 and 19 contain longitudinally extending grooves, similar to the grooves 13--13 in the retractor guide, for the reception 3 of the balls 14 which provide anti-friction bearings for the retractor to facilitate its sliding movement in the retractor guide.

The retractor guide carries a spring support 28 from which projects a pair of fingers that support and guide compression springs 29-29. The free ends of the springs 29-29 project into the retractor, between its inner and outer side portions, and engage ears 30-30 extending from the opposite sides 31-31 of a U-shaped guide member 32; said ears being supported against the rollback engaging portions 22-22 of the retractor. The sides 3131 of the guide member 32 extend across the retractor and are spaced apart a distance substantially equal to the width of the opening 23-23a- It will be understood that the guide member 32 is retained in the retractor by the springs 29-29 and that the said springs urge the retractor outwardly into normal position.

The inner sleeve 8 and the outer sleeve 9 are each provided with bearing members 33-33 which fit within the sleeves, as illustrated in Figs. 1 and 2, and are prevented from rotating relatively thereto by means of a tab 34 which is bent inwardly from each of said sleeves and projects into a slot 35 extending the entire length of each of said bearings. The formation of the tabs 34 provides a slot 36 in the inner and outer sleeves 8 and 9, respectively, which is in alignment with the slot 35 in the bearings 33-33. Movement of each of the bearings longitudinally of its respective sleeve is prevented by means of a linger 37 which is bent inwardly from each of said sleeves into a notch formed in the edge of each of said bearings.

An inner tubular spindle 38 and an outer tubular spindle 39 are rotatably suported by the bearing 33 in the inner sleeve 8 and in the outer sleeve 9, respectively, to provide an inner and an outer actuator for the retractor. Each of said

spindles

38 and 39 has a segmental portion 40 projecting therefrom into the casing 5 and the opposite edges of said segmental portions are bent outwardly to provide rollbacks 41-41 which engage the portions 22-22 of the retractor to both limit the outward movement of the retractor, by the springs 29, and cause retraction thereof when either of the spindles is rotated. The free end of each of said segmental portions 40, is upwardly inclined as at 42, to provide an abutment 43 between said rollbacks 41-41 for a purpose to be hereinafter more fully described.

The

spindles

38 and 39 contain a slot 44 which extends the entire length thereof and is normally in alignment with the

slots

35 and 36 in its respective bearing member and sleeve.

The

spindles

38 and 39 are rotatably retained within the mechanism and prevented from moving axially thereto by means of annular thrust washers 4125-445 in the manner clearly disclosed in the copending application of Frank I. McConnell, Serial No. 275,618, filed March 8, ,1952.

An inner knob 46 and an outer knob 47 are carried on the

spindles

38 and 39, respectively, and each knob has a shank 48 extending therefrom which telescopically receives its respective spindle and projects through the reduced portion of sleeve to provide a bearing for the outer end of the spindle as clearly illustratedrin Figs. 1 and 2. Eachshank portion has a projection thereon which extends into the slot 44 in the spindle to thereby cause rotation of the spindle when the knob is manually rotated.

In order to prevent removal of the knobs from the spindles, there is provided in each spindle a suitable knob retainer 49 in the form of a semi-circular member having a tongue that projects through a slot in the spindle into a slot in the knob shank, as illustrated in Figs. 1 and 5, and as clearly described in the above-mentioned co-pending application of Leland H. Fisler, Serial No. 269,168. One end of the knob retainer is pivotally supported in an ear 50 which is bent inwardly from the spindle and said catch is biased into retaining position by means of a spring 51 which is secured within the spindle.

The entire mechanism above described is maintained in assembled position by a cup-shaped cover 52 which extends over the

end plates

6 and 7 and has ears 53 thereon which are bent inwardly over the outer end plate 7 thereby permanently securing the mechanism in assembled position.

it will be understood from the above description that rotation of the inner knob 46 or the outer knob 47 will rotate its respective spindle and, through the engagement of the rollbacks 41--41 with the portions 22 22 of the retractor, cause. retraction of said retractor to withdraw the latch bolt from the conventional strike (not shown) to permit opening pf the door.

The present invention provides novel dogging means for preventing rotation of the outer spindle 39, and consequently the outer knob 47 to thereby render said spindle inoperative to retract thek retractor and withdraw the latch bolt.

The said dogging means is in the form of a unit which is insertable into the inner spindle 38 and includes a cup-shaped spring support 54 which is carried within v the spindle and is positioned against the ear 50 that supports the knob retainer 49. The said cup-shaped member has a notch 55 in its periphery which accommodates the structure in the spindle that carries the spring 51. The bottom wall of the cup-shaped spring support 54 has an opening 56 therein through which projects the shank 57 of a dogging bar 58 which is carried and guided within the inner spindle 38. The said bar has a at head portion 59 which extends through the open inner end of the spindle 38v and through the opening 22a-23a in the retractor to a position between the sides 31--31 of the guide member 32 carried by said retractor. The head portion 59 of the dogging bar has a dogging finger 60 extending therefrom which, when in normal position, lies between the sides of the guide member 32. The forward edge of the head portion 59 of the dogging bar has a at 61 thereon which engages the inner wall of the spindle when the bar is in undogging position as illustrated in Fig. 1. The said edge is also provided with an angularly disposed cam surface 62 which extends from the iiat 61 to a position substantially coplanar with the abutment 43 on -the segmental portion of the rollback. The rear edge of the head portion 59 of the dogging bar carries a second cam surface 63 which is disposed at substantiallyA the same angle as the surface 62 and extends Vinto a notch 64 in said rear edge.

The outer end of the shank 57 of the dogging bar has rotatably secured thereto, by any suitable means, a cup-shaped member 65 which provides a support for one end of a compression spring 66, the other end of which is carried by the cup-shaped spring support 54. The cup-shaped member 65 is received in the en-` larged end portion 67 of a turn piece 68 which is ref tatably contained within the spindle 38 and is axially movablevrelatively thereto. The said member 65 has radially projecting

lugs

69 and 70 thereon which are straddled by tabs 71 extending from the end of `the turn piece to thereby permit rotation of the cup member 65 by the turn piece 68; the said tabs 71 being bent over the end of the cup-shaped member 65 to retain it within the turn piece. The lug projects beyond the periphery of the turn piece into a bayonet slot 72 in the end of the spindle.

The turn piece has a portion 68-.a of reduced diameter which projects through an opening in the knob 46 and is retained within the spindle, against the force ofV the spring 66, by an annular flange 73 which surrounds saidopening and. projects into the spindle and. abuts-the shoulder 74 formed by said reduced portion of the turn piece.

`When it is desired to dog the outer knob and spindle against operation, the turn piece 68 is pushed inwardly, against `the force of the spring 66, thereby causing longitudinal movement of the dogging bar 58 with respect to the spindle. As the `saiddogging bar moves towards y the outer spindle, the camsurface 62 engages the abutrnent 43 on the segmental portion of the spindle `38.

, the locking linger 60 into the

slots

44, 35 and 36 formed in the outer spindle, bearing and sleeve, respectively, as illustrated in Fig. 8 of the drawing.

Movement of the dogging bar to this position is limited by engagement of the lug 70, projecting` from the turn piece, with the end of the bayonet slot 72 and the dogging bar is retained in dogging position by rotating said turn piece to bring said lug 70 into the detent portion 75 of the bayonet slot. i i

When the end of the locking tinger60 is disposed in said slots, as illustrated in Fig. 8, it will be understood that rotation of theonter spindle 39 by the manipulation of the outer knob 47 is prevented, since said locking finger ispositionedin the `slot in the spindle and in the slots formed in stationary elements of the lock. The dogging of the outer spindle prevents operation thereof to retractthe retractor,"but` such doggingdoes not affect operation of the inner spindle by thefinner knob 46 as said spindle may be rotated to retract the retractor and open the door. Such operation of the inner spindle does not affect the dogging bar assaid bar is rotatably connected to the turn piece 68 which rotates with said inner spindle. The dogging bar may be removed from dogging position, to permit operation of the outer spindle, by rotating the turn piece 68 to removethe lug `70 from the detent portion of the bayonet slot. The spring 66 will then urge the turn piece outwardly towards normal position and carry the doggingbar away from dogging position. The said bar is urged into normal position by engagement of the cam surface 63 with the edge 76` ofthe opening 23a in the inner side 17 of therep In Fig. 9, 1 have illustrated a' modified form of dogging bar which is particularly adapted `for use in locks where i it isrequired that the dogging means be released when i the retractor is withdrawn either by`depression of the latch bolt, such as would occur when the door is moved towards closed position, or by rotation ofthe `inner spindle. i i i It will be understood that the latch unit `used with such locks has a retractor bar that is connected to the retractor in a manner to cause `retraction thereof, when `the latch bolt is depressed, such as would occur when the bolt engages the strike as `the door is moved towards closed position.

The dogging unit is identical in all respects to the dogging unit above described, but the turnpiece 68 is `replaced by a push-button 77 `which is axially slidable with respect to the innerispindle and is carried on the cup-shaped member 65 in the samemanner as the turn piece, as will be clearlyseen in Figs. `and l1 of the drawing. It will be noted that the lug 7() iis shortened and does not project beyond the periphery of the push button 77 since iny most functions requiring a push button, it is not desiredntontilze the bayonet slot 72.

The head portion 59-a 'of the modified dogging bar 58-:1 is provided with a cam surface 78 and a detent 79.

, The remainder of the head portion 59-a` of the dogging bar is identical to the dogging bar above described and said bar is moved into dogging position, on depression of the pushbutton` 77, in the same manner. It will be noted, however, thatv yas lthebar moves toward the outer spindle and the cam surface 62 on said head portion rides upwardly on the abutment 4l3, the cam surface 78 will engage the edge 76 of the openingin the retractor and urge the retractor rearwardly until the detent 79 passes said edge 76 wherein the retractor springs 29 will urge the retractor into normal position to thereby cause engagement of the detent portion 79 with the side 17 of the retractor as illustrated in dotted lines in Fig. 9. The dogging bar is retained in dogging position, against the force of the spring 66, by engagement of said detent with the side portion of the retractor. It will be` noted that the pushbottom 77 assumes the position indicated in dotted lines.

It will also be noted` that the pushbutton 77 cannot be inadvertently pushed into the inner knob 76 beyond theange73 as the end ofthe tab 34 in the outer sleeve 9 `provides an abutment which is disposed in the path ofthe dogging finger 60 and, on excessive inward movement of said button and bar, provides a stop which preventsfurther inward movement thereof.

Should the retractor be withdrawn either by depressionof the latch bolt or by operation of the inner spindle, the

side portion

1,7 of the retractor willibe carried rear- .wardly out of engagementwith the detent portion 79`of the dogging bar to thereby permit the spring 66 to return said bar and push button to normal position, illustrated in full lines in Fig. 9.

The door locks above` described are held in operative position in the door by suitable escutcheon plates which are carried on the sleeves 8 and 9 and abut the opposite faces of the door as clearly shown in my co-pending application Serial No. 269,168, filed January 3l, 1952. It will be understood that the outer escutcheon plate covers the slot 36 in the sleeve 9 to prevent access to the dogging bar.

It will be understood from the above description that the present invention provides a doggingl unit for cylindrical door latch operating mechanisms which is insertable into said mechanism through the inner spindle thereof` and provides dogging means, containedientirely within `said inner spindle, for dogging the outer spindle against operation.

I claim:

i 1. In a door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, `a latch bolt connected to said retractor, an `inner and an outer `spindle rotatably mounted` in said casing; said outer` spindle having a slot therein normally in alignment with a slot in a stationary element of said lock, and rollbacks on each of said spindles foractuating said retractor to Withdraw the latch bolt; the mprovement which comprises a dogging bar carried within said inner spindle and having` a dogging portion thereon, actuating means for moving said bar longitudinally of said spindle and through the opening in said retractor into dogging position, cooperative cam means operable upon movement of the bar into its` dogging position for biasing said dogging portion into said slots to dog the outer spindle against operation, means tor retaining the bar in dogging position, and means for returning said bar toits undogging position.

2. In a door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, a latch bolt connected to said retractor, an inner and an outer spindle rotatablymounted in said casing; said outer spindle having a slot therein normally in alignment with a slot in a stationaryI element of said lock, and rollbacks on each of said spindles for actuatfor retaining said bar in dogging position, and means for returning said bar into its undogging position.

` 3. The subject matter set forth in claim 2 wherein said cam means is provided in said inner spindle for engagement by said dogging bar upon movement thereof by said actuating means to bias 'said dogging portion into the sl'ots in the outer spindle and stationary element and thereby dog said outer spindle against rotation.

4. In a door lock comprising a casing, a retractor slidably Amounted in said casing andhaving an opening therethrough, a latch bolt connected to said retractor, an inner and an outer tubular spindle rotatably mounted in saidcasing, said outer spindle having a slot therein nor- 'rnally in alignment with a slot in a stationary element of the casing, and a segmental portion projecting from each of s'aid spindles into said casing and forming rollbacks for actuating the retractor to withdraw said latch bolt; the improvement which vcomprises cam means on ,said inner spindle provided by an inwardly inclined edge 4of the segmental portion extending therefrom, a dogging' bar carried within said inner spindle and having a dogging finger thereon, actuating means for moving said bar longitudinally of said spindle through the opening in said retractor and into engagement with said cam means whereby said dogging finger is biased into said slots to dog the outer spindle against operation, means for retaining said bar in dogging position, and means for returning said bar to normal undoggng position.

5. -In a door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, a latch bolt connected to said retractor, an inner andan outer spindle rotatably mounted in said casing; said outer spindle having a slot therein normally in alignment with a slot in a stationary element of said lock, and rollbacks on each of said spindles for actuating said retractor to withdraw the latch bolt; the improvement which comprises a dogging bar within said inner spindle having a dogging portion thereon, a cam surface on ysaid bar, an abutment in said lock, actuating means for moving said dogging bar longitudinally of said inner spindle through the opening in said retractor whereby said cam surface engages said abutment to bias said clogging portion of the bar into said slots to dog the outer spindle against operation, means for retaining said bar in dogging position, and means for returning said bar to normal undogging position.

6. In a door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, fa latch bolt connected to said retractor, an inner and an outer tubular spindle rotatably mounted in said casing, said outer spindle having a slot therein normallyin alignment with a slot in a stationary element of the casing, and a segmental portion projecting from each of said spindles into said casing and forming rollbacks for actua'tin'g the retractor to withdraw said latch bolt; the improvement which comprises a dogging bar carried within said inner spindle and having a dogging finger thereon, a cam surface on 'said bar, an abutment on the segmental portion of said inner spindle, actuating means for moving said bar longitudinally of said inner spindle through the opening in said` retractor t'o cause engagement of said abutment by said cam surface whereby said dogging finger is biased into said slots to dog the outer spindle against operation, means for retaining said bar in dogging position, and means for returning said bar to normal undogging position.

7. The subject matter set forth in claim 6 wherein said abutment is formed by the upper edge of the free end of said segmental portion which is bent inwardly between said rollbacks.

8. In a door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, a latch bolt connected to said retractor, an inner and an outer spindle rotatably mounted in said casing;

said vouter spindle having a slot therein normally in alignment with a slot in a stationary element of said lock, and rollbacks on each of said spindles for actuating said retractor to withdraw the latch bolt; the improvement which comprises a dogging bar carried within said inner spindle and having a dogging finger thereon, actuating means for moving said bar longitudinally of said spindle and through the opening in said retractor, and'cooperative cam means on said bar and in said spindle for biasing said dogging bar into dogging position, wherein said dogging lfinger is positioned within said slots, and for returning said dogging bar to normal undogging position wherein said finger is removed from said slots.

9. In a door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, a latch bolt connected to said retractor, an inner and an outer spindle rotatably mounted in said casing; said outer spindle having a slot therein normally in alignment with a slot in a stationary element of said lock, and rollbacks on each of said spindles for actuating said retractor to withdraw the latch bolt; the improvement which comprises a dogging bar carried within said inner spindle and having a dogging finger thereon, actuating means for moving said bar longitudinally of said spindle and through the opening in said retractor, cam means for biasing said bar into dogging position upon movement thereof by said actuating means wherein said finger is positioned within said slots, means for retaining said bar in dogging position, and separate cam means for returning said bar to normal position upon release of said retaining means and movement of said bar away from dogging position.

l0. The subject matter set forth ink claim 9 wherein said separate cam means includes a cam surface on said bar adapted to engage the edge of the opening in said retractor to bias said bar into normal position upon movement thereof out of dogging position.

l1. In ay door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, a latch bolt connected to said retractor, an inner and an outer spindle rotatably mounted in said casing; said outer spindle having a slot therein normally in alignment with a slot in a stationary element of said lock, and rollbacks on each of said spindles for actuating said retractor to withdraw the latch bolt; the improvement which comprises a fiat dogging bar carried within said inner spindle and having a dogging finger thereon, abutment means in said inner spindle, a cam surface on the edge of said bar opposite said slots, actuating means for moving said bar longitudinally of said spindle and through the opening in said retractor whereby said cam surface engages said abutment to bias the bar towards said slots and cause entry of said dogging finger thereinto for dogging said outer spindle against operation, means for retaining said bar in dogging position, means urging said bar out of dogging position, and a cam surface on the opposite edge of said bar adapted to engage the edge of the opening in said retractor to bias the bar into normal position upon return movement thereof.

l2. 1n a door lock comprising a casing, a retractor slidably mounted in said casing and having an opening therethrough, a latch bolt connected to said retractor, an inner and an outer spindle rotatably mounted in said `casing; said outer spindle having a Vslot therein normally in alignment with a slot in a stationary element of said lock, and rollbacks on each of said spindles for actuating said retractor to withdraw the latch bolt; theimprovement which comprises a dogging bar carried within said inner spindle and having a dogging finger thereon, actuating means for moving said bar longitudinally of said spindle and through the opening in said retractor, cooperative cam means for urging said bar into dogging position upon movement thereof by said actuating means wherein said ringer is located in said slots in the outer spindle and sta- References Cited in the le of this patent UNITED STATES PATENTS tionary element of the lock, a detent on said doggng bar; said detent being adapted to engage the edge of the opening in said retractor when the bar is in dogging position to