US2482926A

US2482926A - Door lock

Info

Publication number: US2482926A
Application number: US707437A
Authority: US
Inventors: Joseph H Milligan
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-11-02
Filing date: 1946-11-02
Publication date: 1949-09-27
Anticipated expiration: 1966-09-27

Description

P 1.949- J.IH. MILLIGAN 2,482,926

DOOR LOCK Filed Nov. 2, 1946 '5 Sheets-Sheet 2 with a cylindrical flange it which forms a hub or bearing on which the outer knob is supported.

The outer knob has a cup-shaped bearing member l5 secured to its inner end by means of screws l3, and the skirt or side wall portion ll of the bearing member l3 encircles and has a supporting bearing on the flange i l. The bearing member i5 is held in place on the flange IE by an annular member is which is secured to the door by screws l3 and the outer end portion of which encircles the skirt ll of the bearing member l5, said member it being provided with an inwardly facing shoulder 23 which engages an outwardly facing shoulder 2i with which the skirt portion ll of the bearing member is provided. These shoulders 2t and 2i hold the bearing member against the end 01' the flange i i and prevent any axial movement of the outer knob '5.

The outer knob 5 is provided with a lockin member, herein shown in the form of a disk 22 which is located within the flange i i and is connected to the outer knob to turn therewith but which is capable of axial movement relative thereto. For this purpose the bearing member l5 is provided with one or more pins 23 which extend through openings 23 formed in the locking disk 22, and since the bearing member I5 is rigid with the outer knob 5, the engagement of the pins 23 in the openings 22 connect the locking member 22 to the outer knob for turning movement therewith but permit the desired axial movement thereof. The bearing flange I4 is provided on its inner face with a rib 25 that is provided with a notch 26, and the locking member 22 is formed on its peripheral edge with one or more locking projections 21 adapted to be received in the notch 23. In the construction herein shown, the rib 25 is provided with two notches '28 that are oppositely disposed, and the locking member 22 has two oppositely disposed locking projections 21.

Means are provided whereby normally the looking disk 22 will be positioned so that the locking projections 21 will occupy the notches 23 and thereby said locking disk is locked from turning movement, and since said locking disk is mounted on the pins 23, the outer knob will be locked from turning movement so long as the locking disk 22 is in a position in which the locking projections 21 occupy the notches 26.

Means are provided whereby normally the locking disk 22 will have this locked position. As herein shown, said disk 22 has rigid therewith a sleeve portion 23 which extends through the end of the bearin member l5 and into an axial chamber 29 with which the outer knob 5 is provided, the outer end of said sleeve member 28 being closed by a screw-threaded plug 30 which is screwed into the end of the sleeve portion 28. The plug 30 is formed with a head 3i somewhat larger in diameter than the sleeve 28, and a spring 32 encircles the sleeve 28 and is confined between the head 3i and a loose sleeve 33 which encircles the sleeve portion 28 and is located in the opening in the bearing member IS. The loose sleeve 33 has at its left-hand end a flange 330. (see Fig. '7) that normally engages the left-hand face of the bearing member l5 as clearly seen in Fig. 4, so that the tendency of the spring 32 is to apply to the head 3| ofthe screw 33 and thereby to the locking disk 22, a force urging said locking disk toward the left. The spring 32 is so tensioned that it normally holds the locking member 22 in the position shown in Fig. 1, wherein the projections 27 are located in the notches 28 of the' rib 25.

The outer knob 5 is provided with key-controlled means by which the locking flange 22 can be moved axially to the right from the position shown in Fig. 2 into a position at one side of the rib as seen in Fig. 4, in which position the locking projections 21 are freed from the notches 23 with the result that the outer knob 5 will be unlocked and can be turned.

The construction herein shown is also such that when the locking disk 22 is thus moved into unlocked position, it becomes coupled to the spindle 3 so that the spindle can be turned to open the door by the then unlocked outer knob.

The key-controlled means for thus unlockin the outer knob comprise a barrel element 34 located within the outer knob 5 and a key plug 35 mounted in the barrel element for turning movement, said key plug having the usual key slot 36 and being normally locked to the barrel element by the usual tumbler pins 31 and spring-pressed iollower pins 38.

When a properly out key 99 is introduced into the key slot 36 thereby to line up the tumbler pins, the key plug becomes unlocked and can be moved inwardly within the barrel 34 from its outer position shown in Figs. 1 and 2 to its inner position shown in Fig. 4. Such inward movement of the key plug 35 operates to shift the locking disk 22 from its locked position shown in Fig. l to its unlocked position shown in Fig. 4, in which the latter position it is coupled or clutched to the spindle 3 by means of the following mechanism.

Interposed between the key plug 35 and the plug 38 at the outer end of the sleeve 28 is a disk 39 having a stem 40 which extends through an opening in the plug 33. This disk element is acted on by a spring 4| which bears at one end against the bearing member [5 and at the other end against said disk element 33, said spring holding said disk element yieldingly against the end or" the key plug and applying sufiicient tension thereto to prevent the follower pins from binding when the key is inserted into the key slot.

When the key plug is moved inwardly into the position shown in Fig. l, it forces the disk element 39 against the plug 33 and thereby moves the sleeve portion 28 and the locked disk 22 inwardly, such movement carrying the locking projections 21 out from the notches 28 of the rib 25 thereby unlocking the outer knob. During such inward movement of the sleeve 28 and disk 22, the spring 32 will be compressed since one end thereof bears against the head 3! of the plug 38 which is screwed into the sleeve 28 and the other end bears against the flange 33a of the sleeve 33, which flange engages the bearing member l5.

As stated above, this inward movement of the locking disk 22 clutches or couples it to the spindle 3. For this purpose, the spindle 3 has at its outer end a coupling flange 32 provided with openings 33 adapted to receive clutching or coupling pins 44 with which the locking disk 22 is provided.

When the locking disk 22 is in its locked position shown in Fig. 1, the pins 34 will be disconnected from the coupling flange 42, but the inward axial movement of the locking member 22 necessary to unlock it from the rib 25 will bring the pins Ml into coupling engagement with the openings 43 in the coupling flange 42.

The door can thus be unlocked by inserting a proper key 99 into thekey slot 36 to unlock the keyiplug and. then by pushing the key and key plug inwardly into the position shown in Fig. 4, with the result thatthe locking member 22 is released from the locking rib 25 and'coupled to the spindle 3. The turning of the unlocked outer knob will thus cause the spindle 3 toturn thereby withdrawing the latch 2 from the keeper in the door frame.

Means are'provided for holding the key plug in its inner position shown in Fig. 3 while the outer knob '5 is being manipulated. For this purpose the key plug is provided witha pin 45 which is normally received in agroove 46 with which the barrelelement s4 is provided. When the key plug is :moved inwardly into the position shown insFig. 2 for unlocking the outer knob, the pin 45 is carried out of the slot at into a recess 41 formed in the inner end of the barrel 34. By turning the key 9i and the key plug slightly after the .pin 45 has been moved out of the slot @8 as'shown in Fig. 5,'the pin it will be moved against the inner wall of the recess M at one side of the slot thereby holding the plug in its inward position and holding the locking disk 22 in its unlocked position coupled to the spindle.

So long as the key remains in the key slot as shownin Fig. 5, the outer knob will remain unlocked and coupled to the spindle and will thus remain operative for opening the door.

To. withdraw the key, it is necessary to turn the key plug to bring the pin 45 into register with the slot 4% and when this has been done, the plug may be moved outwardly into the position shown in Fig. Zby pulling on thekey 99, such movement of the plug being assisted by the springsdi and 42. When the key plug is back in the outer position shown in Figs. 1 and 2, the tumbler pins and follower pins 32 and t8 automatically lock'the plug.

As stated above, the spring 32. is so. tensioned that when the key plug 35; is restored to its normal outer position shown in Fig. 2, said'spring acting on the flange 3311 will return the disk 22 to its central locked position shown in Fig. 1-.

My improved lock is also constructed so that the outer knob can be unlocked and coupled to the spindle by proper manipulation of the inner knob e without the use of a key. The inner knob i and the spindle 3 are capable of axial movement from an outer position shown in Fig. 1' to. an inner position shown in- Fig. 2. When the inner knob and the spindle 3 are thus moved into their inner positions, the coupling flange 42 on the spindle is brought into coupling engagement with the pins it of the locking member and the engagement of the coupling flange 42' with the locking flange 22 pushes. the latter outwardly a sufiicient distance to withdraw the locking projections 2? from the notches 25 in the rib 25 and to locate the locking disk 22 on the outside of the rib 2 5 as shown in Fig. 2. The outer knob is thereby unlocked so that it can be turned and it is also coupled to the spindle so that the door can be unlocked and opened from the outer knob without theuse of a key. 7

Attached to the inside of the door by screws-48 is a rose element 59 which encircles the Eouar id at the inner end of the inner knob 4. This roseelement is provided with two annular grooves 55 and iii which form between them a rib-'52. Said rib is formed with one or more notches or openings 53 and the collar i-El' is provided with a. projection 54 adaptedtooperate in either one of thegrooves 5t and 51.

Normally the innerknob. 4 and thespindl'e are positioned so'that'the projection 54'is in the outer groove 50 thereby placing the coupling flange 42 on'the spindle in the position shown in Figs. 1 and 4.

When it is. desired to unlock the outer knob from the inner knob, the latter is turned to bring the projection 54 in line with the notch 53 and then the inner knob with its spindle is pushed inwardly into its inner position shown in Fig.2 thereby to brin the projection 54 into registration with the inner groove 5 I. Thisinward movement of the knob and the spindle serves to couple the coupling flange 42 to the locking member 22 and also serves to move the locking member 22 outwardly into a position on the outer side of the rib 25 thereby unlocking said outer-knob. By turning the inner knob slightly, the projection 54 is carried out of'registration with the slot 53 and the inner knob will then be held in its inner position byengagement with the rib 54. When the parts have been thus adjusted, then the outer knob is unlockedand coupled to the spindle so that a person may'open the door simply by turning the outer knob and'without the use of a key. This makes it possible for a person within a room to set the lock so that anyone can enter the room without having to use a key for this purpose.

In the door lock construction shown in 7 l to 4, the spindle is free at all times to be turned by't'he inner knob and can be turned by the outer knob when the latter is unlocked and clutched to the spindle either by the key-controlled means as-shown in Fig. 4, or by shifting theinner knob inwardly into the position shown in Fig. 2. i

In Figs. 12 to 16 there is shown a different embodiment of the invention in which the spindle is normally free to be turned by the inner knob but is locked against turningmovement by shifting-the inner knob in an axial direction, thereby making it impossible to open the door from the outer knob even when the outer knob is unlocked by means of the key.

In the construction shown in Figs. 12 to 16, the

spindle is indicated at 3a and it is adapted to be clutched to theouter knob when the latter'is unlocked by the means illustrated in Figs. 1 to 5. a In Figs. 12 to 16 the inner knob is shown at M and it'ijs formed with a hub portion 66 within which is received a sleeve 6| that is provided with a square opening 62 that fits'the square spindle 3a so that the sleeve 51 and the spindle must always rotate as a unit. The sleeve BI is formed at its inner end with a flange 63 which normally engages the inner end of the hub 60 of the inner knob. The flange 63'- is provided with an outwardly extending locking projection 64 which is normally received in a groove 65- formed on the inside-of the rose 66.

The hub 60' is alsoprovided with an 'outwarclly extending projection $1 which when the parts arein' normal position shown in Fig. 12 registers with the projection 64 and is also located in the groove 65'.

The rose '65; is provided with an interior rib 89 which is: formed with a passageway ll] of a size to receivestheprojections 64% and G l.

The inner knob 4a is mounted for axial move:- ment from the normal position shown in Fig.,l2 to a spindle-locking. position shown in Fig. 13, and-means. areprovided whereby whenthe knob isimoved'. from. its normaliposition to? its spindlelooki'ng position, they locking; projection. 54* onxthe flange fis: is moved. into: the passageway 11]? in. the rib 59 whilezthe projectionti: on. the hub it'll is 7 carried clear through said passageway into a position outside of the rib 69.

When the parts are in this position, the sleeve El will be locked from turning movement by reason of the fact that the projection 64 thereon occupies the passageway Hi, and thereby the spindle So will be locked from turning movement. This locking of the spindle will be effective even though the outer knob is unlocked by the key and has been clutched to the spindle as shown in Fig. 4. The construction shown in Figs. 12 to 18 therefore provides means by which a person on the inside of the room, may, by manipulating the inner knob, lock the spindle from turning movement and thereby prevent anyone from opening the door by means of the outer knob even though such person has the proper key with which to unlock the outer knob.

The spindle 3a is shown as provided on its end with a head H which is received in an axial recess 12 with which the inner knob 4a is provided. A sprin 73 encircles the spindle and is confined between the head H and the inner end of the recess 12, said spring normally holding the parts in the relative position shown in Fig. 12.

The sleeve 6| is provided with a pin or projection 14 and the hub 69 is provided with a slot 15 and with a notch 16 in the outer wall of the slot.

When the parts are in normal position shown in Figs. 12 and 14, the pin 14 occupies the notch 16 and thus the inner knob is locked to the sleeve so that turning movement of the said knob will turn the sleeve and thus turn the spindle, which at such time is unlocked by reason of the fact that both the projection 64 on the sleeve and the projection 6'! on the hub 60 of the outer knob are occupying the inner groove 65.

The inner knob is provided with a groove 11 in which is located a thrust pin 18, said pin being confined between the outer end of the sleeve BI and the head H on the spindle. In this embodiment the spindle is held from axial movement toward the right, and, as a result, when the inner knob is moved axially of the spindle from its normal position shown in Fig. 12 into its spindlelocking position shown in Fig. 13, the sleeve will move with the knob outwardly until the outer end of the pin 18 is brought up against the head H on the spindle. This movement of the knob and sleeve is suflicient to carry the projection 64 on the sleeve into the passageway E of the rib 69. When the pin 18 has thus been moved against the head ll of the spindle, then said pin can move no further and consequently the sleeve 6| is prevented from further axial movement.

A continued further axial movement of the inner knob 3a, however, carries the pin 14 out of the notch 16 into the slot 15, this movement being sufiicient to carry the projection 61 on the hub 69 clear through the passageway and outside of the rib 69. The inner knob may then be turned slightly to carry the projection 67 in front of the rib 63 thereby locking the inner knob in its spindle-locking position as seen in Fig. 15. The extent of the turning movement of the inner knob for this purpose depends upon the length of the slot 15.

I claim: a

1. A door lock comprising a latch-releasing spindle extending through the door, an inner knob fast on said spindle, a knob-supporting member fixedly secured to the outer side of the door, an outer knob rotatably mounted on the knob supporting member, a knob-locking member movable axially relative to the outer knob but connected thereto to rotate therewith, said knoblocking member and knob-supporting member having cooperating means locking the knob-locking member and thus the outer knob from turning movement when said knob-locking member is in one position, said spindle and inner knob being movable axially from an outer to an inner position, and means rendered operative by the movement of said inner knob and spindle into their inner positions to shift the knob-locking member axially from its locked position to an unlocked position and to clutch said knob-locking member to the spindle.

2. A door lock comprising a latch-releasing spindle extending through the door, an inner knob fast on said spindle, a knob-supporting member fixedly secured to the outer side of the door, an outer knob rotatably mounted on the knob-supporting member, a knob-lockin member movable axially relative to the outer knob but connected thereto to rotate therewith, said knob locking member and knob supporting member having cooperating means locking the knob-locking member and thus the outer knob from turning movement when said knob-locking member is in one position, said spindle and inner knob being movable axially from an outer to an inner position, means rendered operative by the movement of said inner knob and spindle into their inner positions to shift the knob-locking member axially from its locked position to an unlocked position and to clutch said knob-locking member to the spindle, and means for retaining the inner knob and spindle in their inward position while permitting turning movemerit thereof.

3. A door lock comprising a latch-releasing spindle extending through the door, an inner knob mounted on the innerend of said spindle, a knob-supporting member fixedly secured to the outer side of the door, an outer knob rotatably mounted on said knob-supporting member, a knob-locking member connected to the outer knob to rotate therewith and movable axially in either direction from a central locked position to an unlocked position, means for locking said knob-locking member from turning movement when in its central position, key-controlled means to move the knob-locking member axially in one direction from its central locked position to an unlocked position and to clutch said knob-locking member to the spindle, thereby rendering the outer knob operative to turn said spindle, said inner knob and spindle being movable axially, and means rendered operative by an axial movement of the spindle and inner knob to move the knob-locking member axially in the other direction from its central locked position to an unlocked position and to clutch said knob-locking member to the spindle thereby to unlock the outer knob and render it operative to open the door.

4. A door lock comprising a latch-releasing spindle extending through the door, an inner knob mounted on the inner end of said spindle, a knob-supporting member fixedly secured to the outer side of the door, an outer knob rotatably mounted on the knob-supporting member, a knob-locking member connected to the outer knob to rotate therewith and movable axially in either direction from a central locked position to an unlocked position, said knob-supporting member and knob-locking member having cooperating means for locking the knob-locking member from turning movement when it is in its central position, key-controlled means to move the knob-locking member axially in one direction from its central locked position to an unlocked position and to clutch it to the spindle thereby rendering the outer knob operative to turn said spindle, said inner knob and spindle being movable axially, and means rendered operative by an axial movement of said spindle and inner knob to move the knob-locking member axially in the other direction from its central locked position to an unlocked position and to clutch said knob-locking member to the spindle thereby to unlock the outer knob and render it operative to open the door.

5. A door lock comprising a latch-releasing spindle extending through the door, an inner knob mounted on the inner end of the spindle, a knob-supporting member secured to the outer side of the door and presenting a cylindrical flange co-axial with the spindle, an outer knob mounted for turning movement on said cylindrical flange, a knob-locking disk located within said cylindrical flange and movable axially in either direction from a central locking position, means connecting said disk to the outer knob for turning movement therewith, said locking disk and cylindrical flange having cooperating means to lock the disk and therefore the outer knob from turning movement when said disk is in its central position, means normally holding said disk in such central position, said disk being free for turning movement when moved either inwardly or outwardly from said central position, key-actuated means associated with said outer knob and moving said knob-locking disk from its central locked position to its inner unlocked position, means for clutching said disk to the spindle when in such inner unlocked position, said inner knob and spindle being movable axially and said spindle having means associated therewith to move the knob-locking disk into its outer unlocked position and to clutch said disk to the spindle when the inner knob is moved axially.

6. A door lock comprising a latch-releasing spindle adapted to extend through a door, an inner knob mounted on said spindle, an outer knob mounted on the outside of the door, a

knob-locking member movable axially relative to the outer knob between a locking position and an unlocked position but connected to the outer knob to rotate therewith, means cooperating with REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 604,951 Anderson et al. May 31, 1898 1,681,187 Keesling Aug. 21, 1928 1,769,314 Rymer July 1, 1930 1,783,785 I-Iabicht Dec. 2, 1930 1,810,909 Ellingson June 23, 1931 1,845,963 Ellingson Feb. 16, 1932 2,185,863 Miller Jan. 2, 1940