US2484961A - Door lock - Google Patents

Description

Oct. 18, 1949. F. J. RUSSELL ET AL 2,434,961

DOOR LOCK Filed Aug. 9, 1948 2 Sheets-Sheet l x 10! i7 I?) I 123 99 124 d 121 99 I 10; 9a

g5 13! 1/4 \H 94 11/ {f6 FRED J. RUSSELL, GEORGE BORIS SOLOV/EFE JNVENTORS.

HUEBNER, BEEHLER, WORRE L, HERZ/G 8 CALDWELL A TTORNVS.

Oct. 18, 1949. F. J. RUSSELL ET AL 2,484,961

' noon LOCK Filed Aug. 9, 1948 2 Sheets-Sheet 2 //2 m; 1/5 i i; //1 9? w 97 L I 4 1 2 [1:1 1 I 1? 1 1- 100 I FRED J. RUSSELL, GEORGE BOP/S SOLOI IEFF,

IN V EN TOR-5'.

HUEBNER, BE E HL E R, WORRE L HERZ/G 8 CALDWELL By A 7'7'ORNEKS'.

Patented Oct. 18, 1949 UNITED STATES PATENT OFFICE Soloviefi, South Gate, Calif., assignors to Weiser Company, South Gate, Calif., a corporation of California Application August 9, 1948-, "Serial No. 43,212

18 Claims.

1 Our invention relates to door locks of the type in which the knobs can be locked against rotation by an inward thrust of the inside knob, and one of the primary features of the invention is the provision of a cam actuated by a spindle which is rotatable by a cylinder lock in the outside knob to exert an outward thrust against the inside knob thereby moving it into unlocked position. The spindle is of suflicient length that it in conjunction with the remainder of the lock structure, especially the actuating cam, affords a wide range of adjustabil-ity to accommodate doors of varying thickness without the necessity of re-worki-ng any of the lock parts or any readjustment of the lock itself, the same being readily and easily installed by an artisan skilled in conventional door lock installation. The free end of the spindle referred to and the free end of a tubular latch actuating spindle are associated with their cooperating parts with a longitudinal freedom, and there is provided adequate adjustment of thread engagement by attaching screws which constitute the binding means between outer knob assembly and a securing plate enabling the opposite halves of the door lock assembly to be spaced farther apart or closer together as may be required by the thickness of the particular door in which the lock is installed.

The principal object of our invention is to produce a door lock of the character described.

Another object of the invention is to provide a novel structure for assembling the lock to a door and retaining in cooperative relation parts of the lock itself. 'The feature to which this is directed resides in part in a plate bolted against the inner side of the door to the outside rose insert, thereby securing the outside rose assembly to the door. This plate also furnishes a mounting for attaching the inside knob assembly, including the rose. It has tabs or ears providing engagement means to prevent unauthorized rotation of the knobs. It also affords a base for the action of the cam above referred to.

These and additional objects and advantages of our invention will become apparent from the description which follows and the drawings forming a part of this specification.

In the drawings:

Figure 1 is a sectional plan view of a door lock embodying the principles of our invention.

Figure 2 is a sectional view taken on line '2-2 of Figure 1. I

Figure 3 is a partial sectional view taken on 2 line -3-3 of Figure 2 showing the knob in locked position.

Figure 4 is a sectional View taken on line 4-4 of Figure 1.

Figure 5 is a view similar to Figure 3 showing the knob in unlocked position.

Figure 6 is a sectional view taken on line B''6 of Figure 1.

Figure 7 is a sectional view taken on line 'I! of Figure 1.

Figure 8 is a partial isometric view of the cam actuating spindle and a tubular latch actuating spindle partly enclosing the same.

Figure 9 is an exploded isometric view of the knob locking plate.

M Figure i0 is an exploded isometric View of parts of the inner knob assembly as seen from the left-hand side of Figure 1.

The special features of our invention may be incorporated in conventional door locks the construction of which differs in detail, the prerequisite being that type of door lock which has locked and unlocked positions and the device of the invention enables it to be moved to unlocked position by key rotated cam means retained within the inner knob assembly, thus providing many mechanical and fabricating advantages. Conventionally the knobs are operativel'y associated through a spindle to a latch which reciprocates at an angle of to the which will be supplemented by certain additional Ziea'tu-re's as the description progresses. It will be obvious that many of the details referred to are shown for illustrative purposes only and not by way of limitation and that various other structural forms can be equally well utilized in conjunction with the primary novel features.

Outer knob assembly The outer knob assembly comprises an outer shank 15 which is formed with a cylindrical section It and a conical section I! having a shoulder i 8 therebetween.

The outer end of the shank I5 is formed with a shoulder I9 and a boss 20, which said boss 3 20 is formed with a pair of diametrically disposed transverse grooves, which will be further identified and the purpose of which will be explained later.

A shell 25 is formed with a flanged opening on the inner end thereof adapted to enclose the boss 20 and is securely held in place by a washer 26. The washer 26 is formed with a pair of diametrically opposite inwardly directed ears adapted to fit in the grooves of the boss 20, as above described. That portion of the boss 20 which extends outwardly through the washer 26 is peened or swedged over to securely hold the washer and the shell 25 in position.

The shell 25 is also formed with an outer circular aperture 27.

A knob filler 28 is disposed through the opening 21 and abuts against the inner surface of the shell 25. A knob insert 29 formed originally with inwardly extending cylindrical side walls 30 is forced inwardly against th knob filler 28 preferably a square shank filler 32.

The inner end of the shank I is formed with a pair of oppositely disposed semi-circular bosses 35 (see Figure 7) spaced apart to form a pair of oppositely disposed grooves 35. A washer 31 is disposed over the semi-circular bosses 35 and held securely in place by means of a snap ring 38.

The washer 31 is formed with inwardly directed oppositely disposed ears 39 adapted to fit in the grooves 36 and to act as stops to prevent the shank filler 32 from coming out of the bore 33.

The rose insert 40 formed with an extruded centrally disposed cylindrical portion 42 is disposed over the cylindrical portion l6 of the shank I5 and acts as a bearing therefor. A rose 4| is formed with an inner inturned lip 45 and is disposed over the rose insert 40 for the usual purpose of trim. The rose 4| is formed with an outwardly extending conical section 43 which terminates in a shoulder 44 abutting against the shoulder I8 of the shank l5. 7

As will be seen from Figure 1, the washer 31 has a major diameter greater than the diameter of the boss 42 of the rose insert so that when the washer 31 is secured in place by the snap ring 38, the entire outer assembly is secured in one unit.

The filler 28 is formed with a longitudinal bore 50 adapted to receive a cylindrical lock 5| which is formed with a reduced threaded end 52 adapted to cooperate with the cap 3|. The cap 3| has a larger diameter than the bore 50 so that it will abut against the inner end of the filler 28 to assist in retaining the lock 5| in the knob assembly. The cap 3| and the threaded section 52 also provide convenient means for adjusting the tolerance between the lock 5| and its housing which has been identified as the knob filler 28.

A ball seat 53 is formed in the outside surface of the lock 5|. The filler 28 is formed with a transverse bore 54 adapted to receive a spring loaded ball 55 which cooperates with the seat 53. The purpose of such an arrangement is so that the user of the door lock assembly can readily position the cylindrical lock 5| for easy key extraction and subsequent insertion.

While various cylinder locks are usable in our device, a particularly good look for the purpose is shown in copending U. S. application Serial No. 792,934, filed December 20, 1947, now abandoned.

The square shank filler 32 is formed with an axial, non-circular (square) hole 60 adapted to receive a corresponding non-circular (square), tubular spindle 6|. The square spindle BI is formed with outwardly flared shoulders 62 so that it cannot be pulled away from the filler 32.

A non-circular (square) spindle 64 extends through the square tubular spindle 5| and is rotatable within and independently of the spindle 6|. The spindle B4- is formed with an inner flattened and widened end 66 adapted to register with a transverse slot 51 in the end of the cylinder lock 5| so that rotation of the cylinder lock 5| rotates the spindle B4.

This spindle 64 is the one mentioned in the preamble as an important element contributing to novelty in the look.

A compression spring 55 bears at one end against the inner wall of cap 3| and at its other end against the shoulder 66a of the widened end 66 of the spindle 64, to hold the spindle in the cylinder lock 5|.

The arrangement of spindle 64, cap 3|, spring 65 and lock 5| contributes ease of assembly and adjustment of the lock, as well as simplified convenience in substituting or removing the lock for repair.

In assembling, the spring is slipped on the spindle with its small end against the shoulder 66a of the spindle. The spindle is then inserted through'the cap. The hole 3|a through which v the spindle passes is square to accommodate the spindle with a sliding but relatively non-rotating fit. The flattened end 66 of the spindle is inserted in the slot Bl of the cylinder look. This slot is preferably formed in a cross with actually two slots at a angle intersecting in the center, so that the flattened end of the spindle may engage in either one of the slots.

The spindle is rotated while being held back to compress the spring and keep the end 66 outof the lock, screwing the cap onto the lock tight, then it is backed oil to assure freedom of rotation of the cap and lock, and the end 66 is allowed to enter the selected slot.

To remove the cylinder lock, the spindle is pulled free of the same, the spindle is rotated to unscrew the cap from the lock, and the lock can then be withdrawn. Obviously, as shown, the cavity in the cap must be made long enough to afford space for the function described.

A pair of binding posts 68 are secured to the inner surface of the rose insert 40 by means of spot welding, projection welding or other suitable means. The binding posts 68 are internally threaded.

When it'is desired to mount the assembly on a door 80, a hole 8| is bored into the door through the end thereof and intersects a hole 82 running perpendicularly through the door. A suitable latch assembly, designated generally 83, i inserted through the hole 8| and extends into the hole 82. The binding posts 68 are disposed through suitable openings in the latch assembly 83 and a binding plate 84 is secured against the opposite side of the door by mean of bolts 69.

The tubular spindle 6| passes through the latch assembly 83 and engages therewith in any conventional manner (not illustrated) to retract or permit advancement of the latching element,

Inner knob assembly The inner knob assembly comprises an inner shank, designated generally 85, which i formed with a cylindrical section 86 and an outwardly tapered section-81 having a shoulder 88 therebetween.

The outer end of the shank 85 is formed with a shoulder 89-and a pair of semi-circular bosses 90 spaced apart to form a groove 9| therebetween. The shank '85 is formed with a longitudinal bore 92 and a longitudinal bore 93 of reduced diameter. The bore 921s broached to receive a slide 94 which is square (or any other desirable non-circular configuration) in cross-section at its outer portion and round at its inner portion.

The slide 94 is formed preferably with complementary tapers 95 on its outer end to tunetion "as a cam seat. The slide 94 is -formed with a 'squared longitudinal aperture 96 adapted to slidably but non-rotatably receive the square tubular spindle 6|.

A cam 91 is rotatably disposed in the bore 92. It is preferably formed with similar cam faces 91a and 91b at both ends. These cam faces each are formed with flat surfaces tapering inwardly, as may be seen in Figures 1 and 5. A single faced cam can be employed, but an easier action is obtained by the double faced type. The cam face 91a cooperates with the cam seat 95 on the slide, and the cam face 911) cooperates with a seat later described.

The spindle 64 passes through the cam 9! with a non-rotatable fit, so that rotation of the spindle 64 will cause rotation of the cam.

A washer 99 is formed with a central cam seat I preferably similar in surface configuration to the seat 95 which cooperates with the cam face 911). The spindle 94 extends through the washer Without any interlocking engagement therewith.

An inner knob shell I93 is formed with a lip I02 which fits between the shank shoulder 99 and anannular portion 99a of the washer 99, the washer being fixedly securedin its relation to the shell and shank by arcuate segments I of the shank upset over the washer. The lip I02 is formed with flat sides I04 adapted to cooperate with corresponding fiat sides 90a on the bosses 90 to prevent relative rotation between the shell I03 and the shank 85. Diametrical spiders 99b of the washer 99 fit into the grooves 9| to interlock the washer with the shank 85 and knob shell I03.

A cap I08 is secured by press fit into the shell I03.

The cam 91 in its cooperative relationship to the seats 95 and I00 is another important element previously referred to as contributing to novelty in the lock.

Arose insert I I0 is formed with an extruded tubular section III adapted to .fit over the cylindrical section 86 and to act as a bearing therefor. A rose H2 similar to the rose 4| on the outer knob assembly is secured in position over the rose insert I I0 and is formed with a plurality of apertures H3 adapted to receive screws H4. The screws 4 are screwed into threaded openings I I6 in the plate 84.

The means of attachment of the inner rose assembly to the plate 84, provided by the rose and related structure described, and the attachment of the plate 84 to the posts 68 by bolts 69, is considered to be novel.

Knob locking mechanism The inner end of the shank 8'5 formed with a pair of se'mi circular bosses I20 and a leaking washer "I21 is secured thereto by means of eeningor'swedging the outer edges of the bosses I20;

As will be seen in Figure 2, the washer -I 2 I is formed with a plurality of outwardly extending ears I'- 2 2 having notches I23 formed therein. Preferably, there are four such notches s'paced 90 apart, providing a symmetrical element which can be assembled in one of a plurality of positions.-

The plate 84 is formed witha pair of oppositely disposed upstanding ears I-24 adapted to register with the notches I23 so that when the notches "I23 and the ears I24 are in lateral engagement, rotation of the washer I2| is restrained thereby. The washer I-ZI is also formed with inwardly directed ears I25 adapted to fit between the bosses 1'20. It, therefore, becomes apparent that when the washer -I2I is in registry with the ears I24, the inner knob assembly cannot be rotated.

As will be seen in Figures 3 and 5, the 'eyliii' drical section 86 of the inner shank 85 is formed with a pair of annular grooves I38 and HI. resilient ring I32 is disposed over the cylindrical section "86 between the rose and the rose insert so that displacement of the shank 8'5 inwardly or outwardly results in the retainer I32 sliding from one groove I30 to the other groove 131-, which acts as a feeler for properly positioning the shank and for subsequently restraining the same.

It is desired to emphasize the importance of the plate '94 and its relation to certain other parts. It is stationary, being bolted against the inner side of the door through the binding posts 68 to the outer rose insert, thus securing the outer rose assembly to the door. It furnishes a mount ing for attaching the inside knob assembly, cluding the inside rose. Its tabs '01 ears I24 provide engagement means with the notches I-23 in the washer I-2I to prevent unauthorized rotation of the inside knob. It also affords a fixed base or push oif for the slide 94 against which the cam 91 acts.

Operation In order to lock the knobs against rotation,'the inside knob assembly is shifted toward the door, thereby moving the shank 85 inwardly and causing registry between the notches I23 of the knob lock washer I2I with the ears I24 of the plate 84. Of 'course, it will be understood that the plate 94 is restrained against rotation as the result of engagement of bolts with posts 68, and since the washer I2I is interlocked with the shank '85 because of the ears I25, the shank cannot rotate.

The slide 94 is in non-rotational engagement with the shank because of the square crosssection interfitting with the broached grooves. The tubular shaft BI being square and interfitting into a square longitudinal opening 96 of the slide 94, is also restrained from rotational movement with respect to the washer I2I.

The tubular shaft 6| fits through the shank filler 32 of the outer knob assembly which is also formed with a square bore 50 and which is restrained from rotational movement with respect to the shank I5 because of the broached grooves. It, therefore, becomes apparent that neither the inner nor outer shanks can rotate while the washer I2I is at its right extreme as viewed in Figure 2 because of registry between the notches I23 and the ears I24.

The inner spindle 64 is sufficiently smaller than the inside dimensions of the tubular spindle 6| to permit relative rotation.

Assuming that the inside knob assembly has been shifted to lock the knob against rotation, the assembly may be unlocked from the inside by pulling on the knob in a direction away from the door, or from the outside by inserting a'key into the lock and rotating in the usual manner. The latter is accomplished through the following agencies: Turning the key rotates the cylinder lock, which rotates the spindle 64. This causes rotation of the cam 91 Which is opposed on one face by the seat 95 and on the other face by the seat I00. The cam is slidable on the spindle. Shifting of the slide 94 being prevented by the plate the cam moves away from the door and in turn pushes the washer 99 still farther away, thus moving the inside knob from the position shown in Figure 1 to that shown in Figure 5. This forces the shank 35 away from the door thereby removing the lock washer l2] from registry with the ears I24.

As was pointed out, there is sufiicient clearance between the spindle 64 and the tubular spindle 6| to permit relative rotation so that the cam can be rotated to actuate the inner knob assembly to a position in which it is free to rotate, thus permitting a rotation of either knob assembly to cause a withdrawal of the latching mechanism from its keeper so that the door may be opened.

Also as will be noted from Figure 1, the spindle 64 extends inwardly through the assembly into the hollow inner knob, and is in slidable engagement with the cam 91, so that the permissible distance between the inner and outer knobs can be varied considerably to compensate for variation in thickness of doors. The tubular spindle BI is in slidable engagement with the slide 94 to allow for variation there.

It will also be noted that when the outer knob assembly has been completely assembled, all of the parts are locked together and there is no danger of any of the parts falling out or becoming lost. The shank filler 32 is held in place by the washer 31 and snap ring 38. The spindle 6| is prevented from removal by the shoulder 62, and the spindle 64 is held in place by the spring 65.

While we have herein shown and described our invention in what we have conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of our invention, which is not to be limited to the details disclosed herein, but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices.

Having described our invention, what we claim as new'and desire to secure by Letters Patent is:

1. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, means associated with said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and means interconnecting said rotatable lock and said means associated with said inner knob assembly adapted to communicate key rotation of said rotatable lock to said last named means to move said inner knob assembly to said extended position where it is free to rotate.

2. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, cam means retained within said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and means interconnecting said rotatable lock and said cam means adapted to communicate key rotation of said rotatable lock to said cam means to move said inner knob assembly to said extended position where it is free to rotate.

3. A door lock comprising inner and outer knob assembles, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, means associated with said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and a spindle interconnecting said rotatable lock and said means associated with said inner knob assembly adapted to communicate key rotation of said rotatable lock to said last named means to move said inner knob assembly to said extended position where it is free to rotate.

4. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, cam means retained within said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and a spindle interconnecting said rotatable lock and said cam means adapted to communicate key rotation of said rotatable lock to said cam means to move said inner knob assembly to said extended position where it is ,free to rotate.

5. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, said means including a tubular spindle, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, cam means retained within said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and a second spindle longer than and passing through said tubular spindle interconnecting saidrotatable lock and said cam means adapted to communicate key rotation of said rotatable lock to said cam means to move said inner knob assembly to said extended position where it is free to rotate. Y

6. A door lock comprising inner and outer knob assemblies, a fixed plate intermediate the said assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies up on extended positioning of said inner knob assembly, cam means retained within said inner knob assembly bearing upon said fixed plate and adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and means interconnecting said rotatable lock and said cam means adapted to communicate key rotation of said rotatable lock to said cam means to move said inner knob assembly to said extended position where it is free to rotate.

7. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, said last named means including a plate having stops thereon and fixedly attachable to the outer knob assembly to secure the latter upon a door, and a rotatable member adapted to engage with or disengage from said stops, means associated with said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and means interconnecting said rotatable lock and said means associated with said inner knob assembly adapted to communicate key rotation of said rotatable lock to said last named means to move said inner knob assembly to said extended position where it isfree to rotate.

8. A door lock comprising inner and outer knob assemblies, an intermediate plate adapted to abut against the inside of a door in which the lock is installed, means extending through the door adapted; to secure the outer knob assembly to the plate, and means attaching the inner knob assembly to said; plate, the, inner knob assembly being axially movable. to. extended and retracted positions, means associated with said knob assemblies adapted to actuate; a latch upon rotation of. either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of: either knob assembly upon retracted positioning;- of said inner knobassembly and.v to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, means associated with said inner knob assembly adapted upon rotationto move said innor knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and meansinterconnecting said rotatable; lock and. said means associated with said inner knob assembly adapted to communicate-key rotation of said rotatable lock to said last named meansto move said inner knob assembly to said extended. position where it is free to rotate.

9. A door lock comprising inner and outer knob assemblies, the inner knob,- assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, said last named means including a stationary fixed plate having at least one stop thereon, and a rotatable washer having circumferentially equally spaced stops any one of which is adapted to engage with the stop on the plate, means associated with said inner knob assembly adapted upon rotation to move said innerknob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and means interconnecting said rotatable lock' and said means associated with said inner knob assembly adapted to communicate key rotation of said rotatable. look to, said last named means to move said inner knob assembly to said extended position whereyit isfree to rotate.

10. A door lock comprising inner and outer knob assemblies, a fixed plate intermediate the said assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, cam means retained within said inner knob assembly bearing upon said fixed plate and adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and a spindle interconnecting said rotatable lock and said cam means adapted to communicate key rotation of said rotatable lock to said cam means to: move said inner knob assembly to said. extended position- Where ity is free. to rotate,

11. A door lock comprising inner and outer knob assemblies, a fixed plate intermediate the said assemblies, the inner knob assembly being axially movable to; extended and retracted posi- I 11 tions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, said last named means including a stop on said fixed plate, and a rotatable member having a complementary stop adapted to engage with or disengage from the stop on said fixed plate, cam means retained within said inner knob assembly bearing upon said fixed plate and adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and a spindle interconnecting said rotatable lock and said cam means adapted to communicate key rotation of said rotatable lock to said cam means to move said inner knob assembly to said extended position where it is free to rotate.

12. A door lock comprising inner and outer knob assemblies, a fixed plate intermediate the the said assemblies securing said assemblies in cooperative relationship, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, said last named means including a member engageable with and disengageable from said fixed plate, means associated with said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, said last named means including a rotatable cam member and a relatively nonrotatable cam seat the latter engaging against said fixed plate, a rotatable key actuatable lock associated with said outer knob assembly, and a spindle interconnecting said rotatable lock and said cam member adapted to communicate ke rotation of said rotatable lock to said last named means to move said inner knob assembly to said extended position Where it is free to rotate, said spindle having a free length extending into the knob of said inner knob assembly whereby the inner knob assembly can be positioned at varying distances from the outer knob assembly depending upon the thickness of the door upon which the lock is installed.

13. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knoblassemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, said last named means including a stationary fixed member and a rotatable member in operative relation thereto, one of said members having at least one stop thereon and the other of said members having a plurality of stops circumferentially equally spaced thereon, means associated with said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, a rotatable key actuatable lock associated with said outer knob assembly, and means interconnecting said rotatable lock and said means associated with said inner knob assembly adapted to communicate key rotation of said rotatable lock to said last named means to move said inner knob assembly to said extended position Where it is free to rotate.

14. In a door lock comprising an outer knob assembly having a cylinder lock therein, a tubular cap in threaded engagement with an end of said cylinder lock and providing a cavity between the inside of said cap and said end of the cylinder look a spindle extending axially through said cap in slidable but keyed relation thereto, a slot in the end of said cylinder lock, an end on said spindle adapted to engage in said slot in keyed relation to said cylinder lock and to be withdrawn therefrom into said cavity, and yieldable means urging said spindle end into said slot.

15. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, means associated with said inner knob assembly adapted upon rotation to move said in-- ner knob assembly from retracted to extended position where it is free to rotate, a rotatable cylinder lock mounted in said outer knob assembly, a spindle interconnecting said cylinder lock and said means associated with said inner knob assembly adapted to communicate key rotation of said cylinder lock to said last named means to move said inner knob assembly to said extended position where it is free to rotate, a tubular cap adapted to be screwed onto the cylinder lock providing a cavity between the inside of said cap and end of the cylinder lock, said spindle extending axially through said cap in slidable but keyed relation thereto, a slot in said cylinder lock, an end on said spindle adapted to engage in said slot in keyed relation to said cylinder lock and to be withdrawn therefrom into said cavity, and yieldable means urging said spindle end into said slot.

16. A door lock comprising inner and outer knob assemblies, the inner knob assembly being axially movable to extended and retracted positions, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, said means including a tubular spindle, means associated with said inner knob assembly adapted to prevent rotation of either knob assembly upon retracted positioning of said inner knob assembly and to permit rotation of both knob assemblies upon extended positioning of said inner knob assembly, means associated with said inner knob assembly adapted upon rotation to move said inner knob assembly from retracted to extended position where it is free to rotate, said last named means including a rotatable cam member and a relatively nonrotatable cam seat the latter being slidable on but in keyed relation to said tubular spindle, a rotatable key actuatable lock associated with said outer knob assembly, and a second spindle longer than and passing through said tubular spindle in keyed relation to said rotatable lock and to said cam member adapted to communicate rotation of said rotatable lock to said cam member to move said inner knob assembly to said extended position where it is free to rotate.

17. In a door lock comprising inner and outer knob assemblies, means, keyed to said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, means associated with said inner knob assembly adapted to prevent rotation of said outer knob assembly, and means housed within the inner knob assembly to free said outer knob assembly for rotation comprising a rotatable cam member in cooperation with a relatively non-rotatable cam seat, a rotatable cylinder lock mounted in said outer knob assembly, and a spindle extending slidably through but in keyed relation to said cam member and having a keyed connection with said rotatable lock adapted to communicate rotation of said rotatable lock to said cam member.

18. In a door lock comprising inner and outer knob assemblies, means associated with said knob assemblies adapted to actuate a latch upon rotation of either of said knob assemblies, said means including a tubular spindle, means associated with said inner knob assembly adapted to prevent rotation of said outer knob assembly, means asso- 14 ciated with said inner knob assembly adapted upon rotation to free said outer knob assembly for rotation, said last named means including a rotatable cam member and a relatively nonrotatable cam seat, a second spindle longer that and passing through said tubular spindle, the

cam member being slidable on but in keyed relation to said second spindle, a rotatable key actuatable lock associated with said outer knob assembly adapted to communicate rotation of said rotatable lock by means of said second spindle to said cam.

FRED J. RUSSELL.

GEORGE B. SOLOVIEFF.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,755,434 Ellingson Apr. 22, 1930 1,940,018 Rymer Dec. 19, 1933 2,261,218 Bluemle Nov. 4, 1941 2,264,239 Hirsh Nov. 25, 1941 FOREIGN PATENTS Number Country Date 7,045 Great Britain Apr. 5, 1893

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