US2261796A - Lock - Google Patents

Description

Nov. 4, y1941. c. couR-rNY LOCK Filed April 25, 1940 v 5 sheets-sheet 1 ATTORNEYS Nov. 4, 1941. c. couRTNEY LOCK Filed April 25, 1940 5 Sheets-Sheet 2 lNVENTOR Cha-rales Cou'nelaf WITNESSES 'ATTO RNEYS Nov. 4, 1941. cz. couRTNEY 2,261,796

LOCK

Filed April 25, 1940 5 Sheets-Shkeeb 3 WITNESSEB INVENTOR M ATTORNEYS Patented Nov. 4, 1941 ilNiTED STATES 'F'TENT GFFIC LOCK v Charles Courtney, New York, N. Y. Application April 25, 1940, Serial No. 331,545, 18 Claims. (Cl. Z0-142) This invention relatesto'locks and particularly to an improved lock which may be used as an automatic deadlock in connection with sliding doors or swinging doors, an object being to provide a construction which is simple in its detail structure and which, at the Sametime, presents a very strong ecient locking device.

Another object of the invention is .to provide an improved construction which will function when used in connection with a sliding door to slightly open the door as the locking mechanism is moved to an unlocked position.

An additional object of the invention is to provide an improved construction wherein the keeper and the casing of the lock overlap the opening between the door and the door jamb, whereby access to the locking bolt is prevented. 1

An additional object ofthe invention is'to. provide a locking structure which may be used as a deadlock or may be used with a key, .tumbler lock, or the like, to manipulate the bolt from either side of the door.

In the accompanying drawings- Y Fig. 1 is a sectional view through Fig. 3 approximately on the line I-I l Fig. 2 is a transverse sectional View through Fig. 1 approximately on the line 2 2;

Fig. 3 is a horizontal sectional view through Fig. 1 on the line 3 3, Athe same disclosing an embodiment of the invention;

Fig. 4 is a perspective viewof the bolt shown in Figs. 1 and 3;

Fig. 5 isl a sectional View line 5 5, the separated;

Fig. 6 is an edge view of the lock shown in Fig. 3;

Fig. 7 is an edge view of the keeper and keeper plate shown in Fig. 3;

Fig. 8 is a perspective view ofthe keeper shown in Fig. 7; o

Fig. 9 is a perspective view of the upper part of the keeper and keeper plate shown in Fig. 7

Fig. 10 is a perspective View of the bottom plate of the casing, the same embodying certain features of the invention;

Fig. 11 is a sectional view through a wall, a hinged door, and a lock embodying the invention applied thereto;

Fig. 12 is a perspective view of the keeper and keeper mortise plate shown in Fig. 10.1

As illustrated in Figs. 1 to 3, the complete lock structure is applied to a sliding door shown'- with a tumbler lock I of any conventional kind. This through Fig. 3 on the keeper and lock casing being shown lock is provided with alocking 'p1ate`2 offthe 55 .vided with a slot 2l lock I, or for receiving a key in case a key is to usual kind so that when alkey is inserted into the lock I the plate 2 maybe rotated for actuating the bolt 3. If desired,.the tumbler lock I may be eliminated and when this is the case the lock embodying the invention will act as anl automatic deadlock, as it can be operated vfrom only one side of the door. By using a key or a tumbler lock I, the lock embodying theinvention may be actuated from either side of the door.

The bolt 3 is arranged in the casingll and has a bottom plate 5 secured to the door 6 in any suitable way, as for instance by screws 'I and 8. It will be observed that plate 5 is L-shaped with a section or iiange 9 embedded in the edge of the door 6, while the body Iiil of the plate is secured by screws I flatwise against the `inner surface of the door 6. o

As illustrated in Fig. 10, the bottom plate 5 is provided with lugs II, I2, I3 and I4. Eachof these lugs is provided with a threaded aperture for receiving a clamping screw whereby the bottom may be rigidly secured to the casing 4. This casing is provided with suitable apertures for receiving the respective clamping screws I5. In addition, the bottom plate 5 isprovided with a ange I3 offset from the front of the ilange` 9, as shown in Figs. 3 and 10, wherebythe protecting lug I'I may overlap the ange 9 and thereby prevent anyone from passing an instrument between the door 6 and the jamb Ii when the lock is in its locked position. It will be observedthat the protecting lug I'I merges into What may be termed ejecting or opening lugs I8 and I9 which coact with certain parts of the bolt, as herein. after described, for slightly opening door 6 as thebolt 3 is being moved to an unlocked position. It will also be noted that the body IU of bottom plate 5 is provided with an aperture for accom modating the sleeve 26. The sleeve 20 is D110- for receiving theplate 2 of be used. Sleeve 20 is rotatably mounted in the bottom plate 5 and is provided with a pair of' bolt-retracting arms 22 and 23 (Fig. 5) whereby when sleeve 2E! is rotated the proper distance in either direction, one or the other of these arms will engage the post 24 and thereby .rotate the,

bolt 3 so as to move the same to a locked or unlocked position as the casemay be.

The casing 4 has been shown as rectangular (Fig. 5) but it could be some other shape without departing from the spirit of the invention.

Preferably cast integral with the casing 4-is a ,4 double cam 25 having opposite cam-waysorsurl V:faces 26 and 21, which at the centermergeinto as shown in Fig. 4. This "43 strikes the luga recess 23 and at one end into a shoulder 29 and at the other end into a notch 39. This is illustrated particularly in Fig. 1 and in this figure it will be seen that the cam structure 25 is substantially U-shaped with the open end facing the keeper 3| when the lock is in functioning position. Arranged near the open end of the double cam 25 is a round aperture 32 (Fig. 3), which accommodates a hollow boss 33 formed integral with and extending from the bolt 3. The boss 33 is provided with an annular shoulder 34, which is adapted to receive the top of the boss 35 which is integral with the casing 4. In'r v the bearing sleeve 33 the aperture is preferably square in cross section so as to receive the squared extension 36 of a thumb member 31,

whereby when thumb member 31 is 'rotated sleeve 33 and bolt 3 will be rotated. A screwl 381clamps bolt 3 to the extension 36 so that when the screw 38 is in functioning position these two members function as a single unit.

. As illustrated in Fig. 4, bolt 3 is provided with a substantially rectangular body 3' having lat one enda locking flange 39 and at the other enda notch 4U. By reason of the notch 40 there is provided a forked construction or arms 4I and '42. Opening lugs 43 and 44 are preferably formed' integral with thebody 3 and coact with theprojecting lugs I8 and I9 to move the sliding door a short distance or partially open when the 'bolt 3 is moved to an unlocked position. A -swinging arm 45 is pivotally connected at 46 lon the body 3' and at its outer free end is provided With a pin 41 on which a roller 48 is rotatably mounted. A stop or abutment 49 is also carried at the outer end of arm 45 and against this stop or abutment the end portion of spring 5Ilpresses. Spring 59 has a coil 5I surrounding .pin 52 carried bythe body 3' so that as the short end 53 of the spring rests against the lug 54, there will be a continuous tendency of the long end 53 of the spring to press against the stop 49 and swingrthe free end of arm 45 outwardly. The-spring is under continuous tension and, consequently, there is a continuous tendency to swing the roller 48 outwardly or toward the left, causes the roller to followl the cam surface 21 and to snap into the notch 39 when moved to the position shown 1in Fig. 5. When the bolt is moved to the diametrically opposite position to that shown in Fig. '5, roller 48 will move on to the shoulder 29 and thereby be held against return movement. When the bolt is-in the position shown in Fig. 1, the

-spring is under the least tension, and when the bolt is swung to either of its extreme positions, Aasfor instance to the position shown in Fig. 5, the spring is under its greatest tension. The opening lugs 43 and 44 prevent the bolt from -swinging farther than the position shown in Fig. l5, as these lugs are adapted to strike casing 4. rAt each end of 'the flange I6, there is provided a notch or cutout '.55 in the casing 4 and the locking. flange 39 on the bolt 3 is adapted to be` moved through these cutouts as it moves in either direction to a locked or unlocked position. VWhenritis rotatedA one-quarter of a turn in a given direction, thek bolt will swing around to the position shown in Fig. 5, and as the lug I9 the door will be pushed to a slightly open position so that the fingers of a `person may be inserted, if desired, between the -lock and keeper and the door slid to a fully open position. y v Y M The kcp'er, as shown particularly in Figs. 7,. .8

and 9, is really formed in two major parts, but for the purpose of description the part 3I will be termed the keeper and the part 3| will be termed the keeper mortise, which is secured to the keeper by screws 56. Th mortise plate 3I is also secured by screws 51 to the jamb 6'. From Fig. 9 it will be observed that the mortise plate 3| is provided with a flange 58 and this flange is secured to the jamb 6 by wood screws 59. It will be seen, therefore, that the mortise plate is thoroughly secured to the jamb 6 and is strongly secured to the keeper 3I by the screws 56. The mortise plate 3I' is provided with the protecting bar I1 and with the opening or ejecting lugs I8 and I9. As illustrated, particularly in Figs. 7 and 8, the keeper is provided with a flange member Gwhich is formed with an inner arc-shaped surface 6I around which ts the locking flange 39 when the bolt 3 is in locking position. In order to permit the bolt 3 to move to locking position, the keeper is provided with a slot 62 merging `into notches 63 and 64. As the door 6 is;.being slid toclosed ,position the bolt will vbe moved from the unlocking position to locking position.` vOne, end of flange 39 moves into one of the notches 63 and'64, one` of the lugs I8 or I9 will press 'against one of the opening lugs '43 or 44 to move' the roller 48 out of notch 30 `orl'off the shoulderv 29, and as soon as the roller leaves either of thes'e places spring 50 will functio'n to quickly swing the bolt to its lockingv position, as shown in Fig. 1. By reason of this constructiona .quarter turn of the thumb member will not only unlock the lock but will for'ce the, sliding door 6 ajar.

When the door is open and it is desired to close -and lock the same, it is only necessary to slide -thedoor 6 over until one of the opening lugs I8 and I9 strikes one of the lugs 43 or 44 and the :door will notonly be closed but bolt 3 will be automatically moved'to its locking position, as shown in Figs. 1 and 3. It will be noted, therefore, that upon closing the door the lock will automatically function to lock the door closed. It will then be necessary to operate the thumb member 31 to open the door or to operate the tumbler lock I, as the case may be. The unlocking of the door simultaneouslyv opens the door slightly and the closing of the door automatically locks the door closed.

While the lock has been described in detail in respect to a sliding door, it could be slightly changed. and used on a swinging door, as for instance door'6 shown in Fig. 11. In this form of th'e invention, the lock 65 is identical with that shown in Figs. l and 2, and the keeper 66 is identical with keeper 3l, but the keeper moruse plate s1 has-the bar n eliminated and aise y the lugs I8 and I9. Aside from this change they are identical. Itis necessary to eliminate lugs I8 and I9 and bar I1 in order that the door' may lfswingopenand closed. In this form of the invention when the door is closed it does notautomatically lock but by rotating the thumb member 31 -a quarter of'a revolution the bolt will be moved to the locking position, as indicated particularly in dotted lines in Fig. 1-1. In this form of the invention, 'the lock is av deadlock/butyif desired, a keyhole and a proper key may be pro- -vided or the tumblerlock I and associated parts could be usedwithout departing from the spirit iof the invention.

. '.11'. A`v lockfora sliding door including a casing, :ialb'olt v-rotatably 'mounted in said casing and c will move out of the casing and then back into the casing, said lend portion having a locking ange adapted to interlock with a suitable keeper, a pair of spaced ejecting lugs carried by said bolt, said ejecting lugs being positioned so that Awhen the bolt is rotated in one direction to an unlocked position one ejecting lug will engage said keeper and force the door to a partly open position and when rotated in the other direction the other ejecting lug on the bolt will cooperate withV said keeper for forcing the door to a partly open position.

2. A lock of the character describedincluding a casing, a double cam arranged in said casing formed-substantially U-shapeda at bolt rotatably mounted in said Icasing, means for rotating said bolt Aso that one end may be moved into and out of said casing, a pivotally mounted armv carried by said bolt having one end frictionally engaging the inner surface of said U-shaped double cam, and a spring carried by said bolt acting on the free end of said arm for continually pressing the same in a direction to cause a friction between the arm andthe inner surface of said camywhereby there will be a continuous tendency to cause said bolt to swing so that one end will project out of said casing, said cam b'eing provided with a central notch, and m'eans functioning as a notch at each end of said cam, said notches being adapted to be engaged by the* free end of said arm as the arm is moved from one position to the oth'er, said notches functioning to hold the bolt in any of three positions. 3. A lock of the character described including a casing, a substantially U-shaped cam positioned in said casing and rigidly secured thereto, the inner surface of the cam acting as opposing cam faces, said cam at the junction of said opposing faces being forrned with a recess and each end of the cam being formed with a formation lunctioning as a notch, a flat bolt positioned to move over said cam and be rotated so that one end may be moved into and out of the casing, the opposite end of said bolt being provided with a pair of stops for limiting the inward movement of the bolt in either direction, manually actuated means for swinging the bolt to an outer or inner position, a spring-pressed arm carried by said bolt and a roller carried by the free end of said arm, saidroller being adapted to interlock with said recess at one time and with one of the notches at another time so as to hold the bolt in either a locked position or an unlocked position. Y

4. A lock of the character described including a casing formed of cast metal and provided with an integral U-shaped cam and an edge having notches therein, a fiat bolt rotatably mounted in said casing, said bolt having an upstanding flange adapted to pass through said notches when rotated, and means carried by the bolt coacting with said cam for tending to hold the' bolt in its locked position or in an unlocked position.

5. In a lock of the character described, a casing formed of cast metal and provided with an integral U-shaped double cam, said cam at the closed end having a recess, at the outer end of one of the arms of the cam a recess and at the outer end of the other arm a shoulder functioning as a recess, a iiat bolt pivotally mounted in said casing, means extending exteriorly of the casing for permitting manual rotation of the casing, 75

and a spring-pressed member carriedby said cam continually pressingagainstsaid cam, said spring- 'pressed'l member being adapted 'to snap into said recess, said notch, or n top of said shoulder according tothe position of the bolt for holding the -boltin any oithree positions.

6. In a lock of the character described, a bolt formed aslaiiat plate andprovided at one end with an upstandinglocking flange, a sleeve onV the plate protruding centrally for receivinga pivotal support, a post'onfthe plate near the aperture of the sleeve and between the aperture` and said flange, said post extending inthe opposite clirection to said flange, and a lug on the same'face of said plate as said post at each of the corners opposite said flange. l Y

7. 'A lock of the character described including a `casing having interiorly thereof a U-shaped cam, a iiat plate acting asa bolt pivotally mounted in the casing, the pivotal mounting being adjacent a line drawn across the open end of the U-shaped cam and an equalA distance between the outer ends of the arms of the cam, whereby the bolt may swing on its pivot in a plane parallel to the side ofthe cam, meansv for pivotally mounting said bolt, said means extending to a point exterior of the casing so as t0 manually actuate it for swinging one end of the bolt into andout of thecasing, said bolt at one end having an upstanding flange and at the other end a pair of spaced lugs acting as stops for limiting the rotary movement'of the bolt, an arm pivotally carried by the end of the bolt adjacent said lugs, a roller carried at the free end of said arm, said roller being positioned to move over the inner surface of said cam, and a spring carried by the bolt acting on the free end of said arm for causing said roller to continually remain in contact with the inner surface of said cam, whereby the g bolt will be given a tendency to remain in either of two inner positions, or in a 'single o-uter or locked position.

8. A lockof the character described including a casing, a nat bolt pivotally mounted in the casing, said bolt being mounted so that one end may swing into and out of said casing eitherto the right or to the left, said bolt being provided with an upstanding post adjacent the pivotal mounting, a bottom plate for said casing, a sleeve rotatably mounted in said bottom plate, said sleeve being provided with a pair of oppositely extending arms positioned to engage said post and swing the bolt to the right or left according to the position of the bolt so as to move the bolt into and out of said casing, and means coacting with said sleeve for rotating the same.

9. A lock of thecharacter described including a casing, a bolt rotatably mounted in said casing,

and means extending to a point exterior of the casing for rotating the bolt, said bolt having an ejecting lug at one end, engageable with a suitable keeper as the bolt is swung to an unlocked position, whereby said casing and the door connected therewith will be forced away from saidbolt presses on the tened will be forced away from said keeper as either one of said lugs presses on the keeper.

11. In a lock, a casing, a rotatory locking bolt movable into either one of two unlocking positions and which lies wholly Within said casing in its unlocking position and which projects `from the casing in its locking position, and coacting means on said bolt and casing which releasably retains the bolt in its unlocking position and which also serves to move said bolt into its locking position for engagement with a suitable keeper after the bolt has been released by a force exerted thereon by encountering said keeper.

12. In a lock, a casing, a rotatory locking bolt which lies Wholly Within said casing in its unl locking position and which projects from the casing in its locking position, and spring actuated means on said bolt which coacts with cam means on said casing. which releasably retains the bolt in its unlocking position and Which also serves to move said bolt into its locking position for engagement with a suitablekeeper after the bolt has been released by a force exerted thereon by encountering said keeper.

13. In a lock, a casing, a rotatory oblong locking bolt having an arcuate locking flange on one end which lies Wholly Within said casing in its unlocking position and which projects from thecasing in its locking position, and coacting means on said bolt and casing Which releasably retains the bolt in its unlocking position and Which also serves to move said bolt into its locking position for engagement with a suitable keeper after the bolt has been released by a force exerted thereon at one side of its axis of rotation by encountering said keeper.

14. In a lock, a casing, a rotatory locking bolt which lies Wholly Within said casing in its unlocking position and which projects from the casing in its locking position, an indented cam on said casing and spring actuated means on said bolt which releasably retains the bolt in its unlocking position and which also serves to move said bolt into its locking position after the bolt exerted on the locking member at one side of its has been released by a force exerted thereon, 54,5

and means for manually moving said bolt into its unlocking position and for releasing it therefrom.

l5. In a lock, a rotary oblong locking member,

and means constantly acting on said member to (50 releasably retain it in either one of two unlocking positions and capable of moving it into a looking position when released, said means functioning to move the locking member into its locking Vposition when in response to pressure axis of rotation 'the member is first moved out of its unlocking Vposition a certain degree to release the same. Y

16. In al lock, a casing, a rotary locking member rotatable to the right or left into and out of a locking and an unlocking position, and means consisting of a cam on said casing and a spring actuated detent cooperating' with said cam constantly acting on said member to releasably retain it in an unlocking position and capable of-moving it into a locking position when released, said means functioning to move the locking `member into its locking position when in response to pressure exerted on the locking member at one side of its axis of rotation the member is rst moved outl of its unlocking position a certain degree to release the same.

17. In a lock, la casing,a rotating locking bolt which lies,V Wholly Within said casing in its unlocking position and which projects from the casing in its lockingv position, and coacting means on said bolt and casing which releasably retains the bolt in its unlocking and also its locking position when moved thereinto, said coacting means also serving to move said bolt into its locking position for engagement with a suitable keeper after the bolt has been released from its unlocking position by a force exerted on the bolt by encountering said keeper, said coacting means consisting of a spring-pressed detent carried by .said bolt and an indented formation on said casing.

18.In a lock, a casing, a rotary bolt which lies Wholly within rsaid casing in its unlocking position and-Which projects from the casing in its locking position, an indented cam surface eccentric to the axis of said bolt embodied by said casing, a pivoted detent carried by said bolt, a compression spring carried by said bolt, one end of said spring bearing on said detent and its opposite end bearing on a lug on said bolt, the provision `and arrangement of parts being such that the detent engages in an indentation in said cam surface to releasably retain the bolt in an unlocking position with said spring compressed and whereby the spring causes the movement of the bolt to its locking position after the bolt is released from its unlocking position by the application of a force on the bolt at one sidey of-its axis of rotation due to the detent moving along said cam surface in contact therewith.

CHARLES COURTNEY.

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