US2058163A - Door lock - Google Patents

Description

Oct. 20, 1935. H, E MALONE 2,058,163

DOOR LOCK Filed April 27, 1954 2 Sheets-Sheet 1 [raven/02" #04452 L: MA4 0N5 ATTog EYq Oct. 20, 1935 H. E'. MALONE (Eu W Patented 0a. 2c, 1936 UNITED STATES 2,058,163 noon LOCK Homer E. Malone, Minneapolis, Minn.

Application April 27, 1934, Serial No. 722,660

'10 Claims.

This invention relates to new and useful improvements in door locks, generally, and more particularly to door locks of the character adapted for use in private homes, and the like.

An object of the invention is to provide a door lock which is neat and attractive in appearance; comprises few working parts; is positive and safe in operation, and may readily be mounted in a door without cutting away large portions of the door, and which is provided with means for looking it whereby it cannot be opened from the exterior of the building by an unauthorized person; and which issimple and inexpensive in construction whereby it may be manufactured at acomparatively low cost.

The invention further concerns'itself with the provision of a door lock comprising a bolt mounted for sliding movement within the door, and having a hollow handle secured to the door in flxedrelation, and provided with a latch member mounted for swinging movement into and out of said handle, said latch member having an operative connection with the boltand being so arranged that when the handle is' grasped, the locking bolt will be retracted to thereby permit the door to beopened.

Other objects of the invention will appear from the following description and accompanyin drawings and will be pointed out in the annexed claims. I

In the accompanying drawings there has been disclosed a structure designed to carry out the various objects of the invention, but it is to be understood that the invention is not confined to the exact features shown as various changes may be made within the scope of the claims which Figure 3 is a detail sectional view on the line 3--3 of Figure 2; 1

Figure 4 is a vertical sectional view on the line 44 of Figure 1, showing the means for locking one of the slides against movement;

Figure 5 is'a vertical sectional view on the line 5-5 of Figure 1, showing the construction of the lock at the inner side of the door; a

Figure 6 is an exterior view of the look as seen from the inner side of the door; and

. Figure 7 is a detail sectional view on the line of Figure l.

The novel lock herein disclosed comprises a pair of handles 2 and 3, the former being adapted for use on the interior side of the door and the latter on the exterior. The'handles terminate at their lower ends in lugs or projections 3' and 4, respectively, adapted to receive a suitable screw 5 received in threaded engagement with the lug or projection l of the handle 3. Suitable facing plates 6 are seated against the opposite sides of the door 1 and have apertures therein adapted to receive the screw 5. Spacers 8 are shown provided between the inner surfaces of the plates 6 and the adjacent faces of the door I to prevent distortion of the plates, when the bolt 5 is tightened. By arranging the screw 5 as shown, it cannot be removed from the exterior of the door, as will be noted by reference to Figure 1.

The-upper ends of the handles 2 and 3 are provided' with housings 9 and II, respectively, which screws 5 similar to the one provided at the lower ends of the look.

A cylindrical casing i3 is mounted in a suitable bore or cavity ll provided in the door, as best shown in 2 and 8, and has'a face plate l5 secured to one end thereofwhich is received in a recess l 6 provided in the edge of the door. The face plate I5 is preferably rectangular in configuration and may be secured to the door by suitable screws, not shown.

A locking bolt I1 is mounted within the casing l3 and has a head l8 provided with a beveled face l9, as is customary in bolts of this type. The main body portion of the bolt I1 is relatively smaller in diameter than the head' l8, and has a suitable spring 2! coiled thereabout, one end of which is seated against a shoulder 22 at the inner end of the head l8, and the'opposite end of which is seated against a retaining block 23, shown in Figures 2 and 3. The locking bolt I1 -is forked at its inner end to provide a pair of spaced legs 24, and the retaining block 23 is supported in the space between the legs 24 and has its opposite end portions notched, as indicated at 25 in Figure 2, and suitably secured to the walls of the casing l3 by inwardly bending portions thereof into the notches shown at 25. The wall of the casing i3 is provided with oppositely disposed, elongated openings or slots 26,

in which portions of the retaining block 23 are received, as will be clearly understood-by reference to Figure 2.

The inner end of the locking bolt I1 is guidingly supported within the casing l3 by means of a roller 21, rotatably mounted on a pin 28 secured in the spaced legs 24 of the bolt. The diameter of the roller 21 is substantially the same or slightly less than the inside diameter of the casing I3, and the length of the pin 28 is substantially equal to the diameter of the roller 21, whereby the inner end of the locking bolt is axially guided in the casing when the bolt is relatively moved therein. A relatively smaller roller 28 is mounted in the legs 24 of the locking bolt adjacent to the roller 21, and is adapted to be engaged by the mechanism for operating the bolt,J which will next be described.

- The means for actuating the locking bolt I1 is best shown in Figures 1 and 2, and comprises a slide 3|, the inner end of which is preferably shaped as shown in Figure 2, and has a cam face 32 adapted to engage the roller 29. It will be noted that the inner end portion of the slide 3| passes through the slots provided in the wall of the casing l3, and through the space provided betweenthe legs 24 of the locking bolt and is normally engaged with the abutment block or member 23, as-clearly shown in Figure 2.

The outer end portion of the slide 3| has an aperture 33 therein adapted to receive a small lug or projection 34 provided upon the upper end of a lever 35, which is pivotally supported in the lower portion of the handle 3 by means of a suitable pin 35. The lever 35 is preferably shaped as shown in Figure 2, and is adapted to be pressed or swung. into the handle when the latter is grasped, as indicated by the dotted lines 31 in Figure 1. v V

A suitable spring 38 is mounted within the handle 3 and has its upper end bearing against a wall thereof. The lower oflset end portion 39 bf the spring 38- is engaged with the reduced central portion of the pin 35, as best shown in Figure 7, whereby it cannot accidentally become disarranged within the handle. The spring 38 constantly urges-the lever 35 inwardly, and, at the same time, functions asa retainer for the pin 38, whereby the latter cannot be removed from the handle. The "lever 35 has its upper end portion 4| extending inwardly and normally en-,

' readily be understood.

The handle 3 is provided with a suitable lock,

member 45, and is shown provided with theusual tumbler pins which cooperate with similar pins provided in the member 45 to lock the luv receiving member 41 against rotation, when tl e key is removed from the lock.

A locking plate 48 is mounted at the inner end of the cylindrical casing or shell 44 and has a.

ing 49 projecting outwardly through anbpeniiiig 5| in the casing 44, and adapted to be received in a notch 52 provided in the slide 3 I, as shown in Figures 1 and 2, thereby to lock the slide 3| against longitudinal movement. The locking plate 48 is retained in the casing 44 by inwardly bending the walls of the latter to provide an inwardly turned flange 53. A circular disk 54 is shown seated against the inner face of the locking plate 48, and is secured thereto by a notched plate 55 which also is secured to the locking plate 48 by such means as rivets 55. The notched plate 55 isspaced from the adjacent end of the tubular member 45, as shown in Figure 1, and'a suitable torsion spring 51 has one end secured to the notched plate 55 and locking plate 48, and its opposite end to the tubular This spring normally retains the.

member 45. lug 49. of the locking plate 48 in locking engagement with the slide 3|, as shown in full lines in Figure 4. The inner end of the key receiving member 41 is interlocked with the plate 55 in the usual manner, so that when the member 41 is relatively rotated by means of the key 43, the locking plate 48 will be correspondingly rotated to move the lug out of locking engagement with the slide, as indicated by the dotted lines in Figure 4. a

The key receiving member 41 and its associated parts, above described, are confined within the casing 44 in substantially the same man- 'ner as an ordinary cylinder lock, and said lock is shown secured in position in the housing of the holder 3 by a smallscrew 58, received in threaded engagement with the tubular member 45. The head of the screw 58 'is received in an aperture provided in the lower wall of the housing The lock is inserted into the housing ll before the handle 3 is secured to the door.

Means is also provided whereby thebolt |1 may be actuated from the inside of the building by simply grasping the handle 2. To thus operate the lock, a similar lever 53 is pivoted to the handle 2 by a similar pivot pin 38, and its upper end has a lug or projection 5| received in an aperture 52 provided in a slide 63, shown composed of two parts suitably secured-together by 3| as clearly illustrated in Figure 2. Thus, when A the lever or latch member 59 of. thehandle 2 is pressed into the handle 2 by a person grasping the latter, the slide 63 will be actuated" to operate the bolt and thus release the door. By thus providing a separate slide for each had- 'dle, said handles may be operated independently of each other to open the door. i It is also to be noted thatwh'en the lock; 42

is actuated to lock the slide 3| against movement, the slide 63 maybe freely operated by movement. of the lever or latch 53, whereby the door may readily be opened from the inside of the building, whereas, it cannot beopened from the outside, unless the lock 42 is actuated by the key 43 to release the slide 3|.

Means is also provided whereby the slide 3| of the outer handle'3 maybe locked against movement from the interior of the building with:

out operating the lock 42. Such means is best shown in Figure 1, and comprises a cylindrical plug 65 received in the bore of the housing 9 of the handle 2. This plug'has a reduced portion 66 received in an aperture 61 provided in the housing 9, and preferably has its projecting end portion 38 flattened or so shaped that it may be conveniently rotated by grasping it with the fingers.

.10 An operating member or bar 59 operatively connects the plug 65 to the locking plate 48,

whereby when the' plug 95 is relatively rotated in one direction, the locking bar 69 will release the locking plate 43, and permit the spring 51 1 to move it from the dotted to the full line position, shown in Figure 4, whereby the slide 3| is locked against movement. When thus positioned, the door cannot be opened from the exterior of the building by merely grasping the handle 3, as the lever or latch member 35 thereof will be locked against movement. To release the lever 35 of the handle 3 of the door from the interior of the building, the finger-grip of the plug 65, which may be termed a night lock,

is rotated from the full to the dotted line position shown in Figure l, or substantially 90,

- whereby the bar 69 will rotate the locking plate 48, against the tension of the spring 51, to its unlocked position, indicated in dotted lines in Figure 4, whereby the door may be opened from either side. A suitable plate 1| is seated against the inner end of the plug 55, and has adepend-,

ing portion 12 received between the opposite walls of the "lower portion of the housing9, to thereby lock the-plate 1| against rotation. A suitable aperture 13 is provided in the plate 1| to receive the locking bar 69. This aperture is of such size and shape as to permit the locking bar to be rotated substantially 90, the walls thereof providing abutments for said bar. to thereby limit its rotary movement in both directions.

A suitable compression spring is shown interposed between the face plate 6 and the plate 1|, and has its opposite ends seated" against suitable thrust washers which, in turn, are seated against the face plate 5 and apertured plate 1|, respectively,-as best shown in Figure 1. The inner end of the plug 85 is shown provided with two sockets 14 adapted to selectively receive a detent or raised portion 15, which may be provided upon the plate 1|, to thereby secure the plug 65 in either locked or unlocked position.

The parts of the night lock include the plug 65, finger grip 68 and bar 69, allof which .parts are inserted into the housing 9 before the handle 2 is secured to the door, whereby the partsthereof cannot be tampered with when once assembled as shown in Figure 1.

As indicated'in Figure 4, the locking plate 48 of the lock 42 does not rotate;90 when moved from looking to unlocking position, or vice versa. The key 43 and night lock 69, however, are arranged to rotate substantially 90". This is 'broughtabout by reason of the unique shapes of the openings 59 andGII in the locking plate 48 and plate 55, respectively, and further, by reason of the openings 13 provided in the anchor plate 1|, the radial walls of which provide limit stops for the bar 69. By shaping the apertures 6|! of the plate 55, as shown in. the drawings, the tongue 16 of the key receiving member 41 of the lock 42 will move idly for abouttwo-thirds of its movement, or approximately 60, before it engages the radial walls of the apertures 59, after which the plate 65 will rotate therewith until the. key

the building. It is-\further to be noted that the receiving member 41 has completed its full movement of approximately Such movement-of the plate 55 will cause a similar movement'to be imparted to the locking plate 43, whereby the lug 49 will be moved from the full to the dotted line '5 position, shown in Figure 4, or into unlocking position.

The operation of the night lock 68 is quite similar to that of the key receiving member 41, as

it, too, must be rotated substantially 90, or from 10 the full to the dotted line position shown in Figure 1 in order to move the lug 49 out of locking engagement with the slide 3|. The idle movement resulting because of the shapes of the slots 5960 and 13, is provided primarily for the purl5 pose of increasing the degree of rotation of the key 43 and also the night lock 68, whereby they are rotated substantially 90 to lock or unlock the door.

When the night lock 68 is in unlocking position, 20

as indicated in dotted lines in Figure 1, the door may be opened from either side, as the lug 49 will then be in its unlocked position indicated in dotted lines in Figure 4, whereby the levers 59 and 35 may be freely operated. 26

When the night lock 68 is turned to the full line position, shown in Figure 1, the torsion spring 51 will move the lug 49 into locking engagement with the slide 3| whereby the door is locked from the exterior, but may be conveniently opened 30 from the interior, as the lever 59 is always in unlocked position. Rotation of the night lock 69 doesnot impart any rotation to the key receiving 'member 41. To unlock the door from the exterior, the key 43 is inserted into the key-receiving 35 'member 41 and the latter"rotated'; 9 Q, whereby the lug 49 willbe moved out of locking engagement with the slide 3|. As a result of the key receiving member 41 being influenced by the action of the spring 51,which tends to rotate it 40 in a direction to move the lug .49 into-locking engagement with the slide 3|, the .key 43 must be manually held in its unlocked position, in order tohold the lug 49 out of engagement with the slide 3|, and while thus held, the operator may 45 grasp the handle 3 and actuate the lever 35 to open the door. As soon as the key 43 is released, the spring 51 will rotate it. in a direction to move the lug 49 into locking engagement with the slide 3| in which position said lug is normally retained. 50 by said spring. The key must be rotated toethe position shown in Figure 1 before it can be w thdrawn from the key receiving member, 41. \k,

The novel lock herein disclosed is very simple and inexpensive in construction, and may be man- 55 ufactured in large quantities at a very low cost.

It is neat and attractive in appearance, and comprises few parts, all of which are so arranged as to provide a lock which is substantially fool-proof in operation. When the operating levers 35 and. m

look. It is also to be noted that the screws which secure the lock to the door are not visible from 65 the exterior or outside of the door, thereby making it impossible for an unauthorized person-to remove the lock in an attempt to gain access to operating levers 35 and 59 cooperate with the 70 handle portions 3 and 2 to complete the formation thereof, and when in normal positions, as shown in Figure 1, cause the handles to appear very rugged and substantial, and of comparatively large cross-section at their upper portions. 75

The levers 35 and 59 are so formed as to provide a very convenient grip, and by connecting them to the slides 3| and 63, as herein shown, the bolt I! of the lock may be conveniently operated bysimply grasping the handles, as hereinbefore described, thereby dispensing with other means located exteriorly of the lock for thus actuating the bolt. The construction of the lock is such that very little labor is required to mount it in the door, as will readily be seen by referring to Figures 1 and 2, it being understood that the cylindrical casing l3 of the bolt is inserted into the hole or socket I l, bored into the door from the edge thereof, and a suitable opening 11 being provided transversely through the door to provide clearance for the slides 3I' and 33, and the locking bar 69.

I claim as my invention:

, 1. In a door look, a cylindrical bolt mounted for sliding movement in a door, oppositely disposed handles secured to the door in fixed relation, each handle having a lever pivotally mounted therein and each lever having one end adapted for swinging movement, slides operatively connecting said levers to said bolt whereby actuation of either lever will cause retraction of said bolt, to thereby permit opening of the door, and the inner end of one of said slides being forked, and the corresponding end of the other slide being received between the spaced legs of said forked end, thereby to prevent relative rotation of the bolt, when the latter is retracted.

2. In a door, lock, a casing adapted to be mounted in a door, a bolt mounted for sliding movement in said casing, hollow handles secured to the doorin fixed relation, a spring-actuated lever mounted in each handle and normally projecting outwardly therefrom, a slide operatively connected to the upper end of each lever and each from, a slide operatively connected to the upper end of each lever and each having an operative connection with the locking bolt, whereby when either lever is actuated, the bolt is retracted to permit opening of the door, means in one of said handles whereby the lever mounted therein is normally locked against movement, and means in the other of said handles for releasing said normally locked slide.

4. In a door lock, a casing adapted 'to be mounted in a door, a bolt mounted for sliding movement in said casing, hollow handles secured to the door in fixed relation, a spring-actuated lever mounted in each handle and normally projecting therefrom in an inward direction, a slide operatively connected to the upper end of each lever and each having an operative connection with the locking bolt, whereby when either lever. is actuated, said bolt is retracted to permit opening of the door, one of said slides having a forked end providing spaced legs between which the aifiacent end of the other slide is supported, and means whereby the leverin one of said handles may be locked against movement from either side of the door.

5. In a door look, a cylindrical casing adapted to be mounted in a door, a bolt mounted for sliding movement in said casing and having its inner end forked to provide spaced legs, a roller mounted between said spaced legs and engaging the walls of the casing to thereby guide the inner end of the bolt, a pair of slides having their adjacent ends overlapped and supported between said spaced legs and provided with cam faces adapted to engage means on said bolt, a handle secured to each side of the door and each having a lever pivotally mounted therein, said levers being operatively connected to said slides whereby when one of said levers is actuated, the cam face of the slide connected thereto will engage the looking bolt and thereby cause retraction of the latter, whereby the door may be opened.

6. In a door look, a cylindrical casing adapted to be mounted in a door, a bolt mounted 'for sliding movement in said casing and having its'inner end forked to provide spaced legs, a roller mounted at the inner end of said bolt between the spaced legs thereof and engaging the walls of the casing to thereby guide the inner end of the bolt, a relatively smaller roller also mounted between the spaced legs of said bolt, a pair of slides having cam faces engaging said smaller roller and movable in opposite directions, a handle secured to each side of the door and each having a lever pivotally'mounted therein, said levers being operatively connected to said slides whereby, when actuated, the cam faces thereof will engage said relatively smaller roller and retract the locking bolt to permit opening of the door, and means whereby the lever of one of said handles may be locked against movement to thereby secure the door against opening from one side thereof.

7. In a door look, a bolt mounted for sliding movement in a door, face plates secured to opposite sides of the door, a handle secured to each side of the door, each handle having a longitudinal slot therein, pivoted levers mounted in said slots and closing the same, the upper ends of Said levers having portions extending inwardly and engaging said face plates to thereby limit the inward swinging movements of the levers, slides. connected to thelevers and having their inner ends overlapped and operatively connected to said bolt, whereby when either lever is actuated, said bolt will be retracted to release the door, and means in one of said handles for normally locking the slide associated therewith.

8. In a door look, a bolt mounted for sliding movement in a door, face plates secured to op posite sides of the door, a handle secured to each side of the door and seated upon said face plates, each handle having a longitudinal slot therein, spring-actuated levers pivotally mounted in said slots and closing the same, the upper ends of said levers having portions extending inwardly and engaging said face plates to thereby limit the inward swinging movements of the levers,a slide operatively connected to each lever and having their inner ends overlapped and operatively connected to said bolt, whereby when either lever is actuated, said bolt will be retracted to release the door, means in one of said handles for normallylocking the slide associated therewith, and means in both of said handles whereby said last mentioned slide may be released from either. side of the door.

9. In a door lock, a spring-pressed bolt in the door, a handle secured to the door in flxed relation, a spring-actuated lever mounted in the tion, a spring-actuated lever in each handle, handle and normally projecting therefrom, 9. slides operatively connected to the levers andslide operatively connecting the lever to the bolt. having their inner ends overlapped. and operwhereby when the lever is actuated, the bolt is atively connected to the bolt, a notch in one of & retracted to permit opening'o! the door, a memsaid slides, a member mounted for rotary move- 8 bet mounted for rotary movement and adapted ment and having a Dori-1011 fip to en ge to lockingiy engage the slide ,to secure it against said notch. thereby to lock said notched slide movement, thereby to lock the door, and means a ainst moveme t. and means i o e o t whereby said rotary member may be actuated by handles whereby said rotatable member may be 10 a key, actuated bya key to lock or unlock said notched 10 10. In a door lock, a spring-pressed boltin the slider door, handles secured to the door in flxed rela- HOMER MALONE.

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