US2627436A

US2627436A - Doorknob spindle securing means

Info

Publication number: US2627436A
Application number: US90942A
Authority: US
Inventors: Jr Robert C Cerf
Original assignee: HOLLYMADE HARDWARE Manufacturing Co
Current assignee: HOLLYMADE HARDWARE Manufacturing Co
Priority date: 1949-05-02
Filing date: 1949-05-02
Publication date: 1953-02-03
Anticipated expiration: 1970-02-03

Description

Feb. 3, 1953 R. c. CERF, JR

nooRxNoB SPINDLE SECURING MEANS 2 SHEETS-SHEET l Filed May 2, 1949 53 FIG lla |Nvl-:NTOR

ROBERT C. CERF JR.

ATTORNEY Feb. 3, 1953 R. c. CERF, JR 2,627,436

DORKNOB SPINDLE SECURING MEANS Filed May 2, 1949 2 SHEETS--SHEET 2 INVENTOR fir-X 3| r ROBERT G. CERF JR.

l. wlw/lm 'U @L ATTORNEY Patented Feb. 3, 1953 DOORKNOB SPINDLE SECURING MEANS Robert C. Cerf, Jr., Los Angeles, Calif., assignor to Hollymade Hardware Manufacturing Company, Los Angeles, Calif., a corporation of California Application May z, 1949, serial No. 90,942

2 Claims.

This invention relates toa door knob lock and latch set with inside turn-button spindle-locking means for the outside knob and including key operable latch retraction means. Y

The general object of the invention is to provide an improved dook knob lock and latch set particularly adapted for outside doors in which the outside knob may be locked against turning by a turn button located in the inside knob which locking remains effective after subsequent turnlngs of the inside knob for retracting the latch and after retraction of the latch by means of a key operating in a cylinder lock in the outside knob. Another object is to provide in the lock set of the kind described means for easily removing the inside and outside knobs and spindles to facilitate the proper installation of the lock set on a door but which means, after the mounting of the set on the door, become inaccessible for removal of the outside knob and spindle except by 4.access from the inside of the door. A further object is to provide in a door knob and lock set of the kind described, means for disconnecting the outside knob and spindle without removal of the body or latch unit from the door.

These and other objects are attained by my invention which will be understood from the iollowing description, reference being made to the accompanying drawings which form a part hereof, in which:

Figure 1 is a plan View partly in section of a preferred form of my lock and latch set as mounted on a door, with portions broken away to better show the structure;

Figure 2 is a cross-sectional View taken on the line 2--2 of Figure l; y

Figure 3 is a cross-sectional view taken on the line 3--3 of Figure 1;

Figure 4 is a cross-sectional view taken on the line 4-4 of Figure l;

Figure 5 is a cross-sectional view taken on the line 5-5 of Figure 2;

Figure 6 is a cross-sectional View taken on the line 6--6 of Figure 2;

. Figure 7 is a perspective View of theoutside half portion of the lock body;

Figure 8 is a perspective view of the inside half portion ofthe lock body;

Figure 9 is a perspective view of the retractor;

Figure 10 is a disassembly view of the key-actuated shaft and rollback together with the outside spindle locking means, the parts being shown in perspective;

1 Figure 11 is a perspective view of the turn buttonlocking sleeve;

Figure 12 is a perspective View of the retainer key plate used to rotatably hold the outside spindle in the body;

Figure 13 is a perspective view of the for the outside knob;

Figure 141s a partial view in perspective show ing the inside knob assembly; and

Figure 15 is a partial cross-sectional view taken on the line I--i 5 of Figure 1. l

in the preferred form of my invention shown in the drawings, the lock and latch set consists of a body 20 Whichis generally cylindrical in shape and is assembled from die-cast metal half portions designated 2| for the outside half portion and 22 for the inside half portion, these half portions being assembled as a hollow unitary body 20 by means of the assembly screws 23 Whose threaded ends engage threaded holes 24 `in the outside half portion 2l, the corresponding unthreaded holes 25 in the inside half portion 22 being countersunk at 26 to receive the heads 21 of the assembly screws 23. In the drawings, the left hand knob containing the key-actuated cylinder lock and the appurtenances thereto are referred to as outside and the right hand knob containing the turn button and the appurtenances thereto are referred to as inside, this referring to the door mounting, for example, such as an entrance house door. The outside half portion 2l is provided with an outside threaded outwardly extending axial bearing sleeve 29 adapted for the mounting therein of the outside tubular spindle 30 upon the end of which the outside knob 3l is fastened. The inside half portion 22 is also provided with an elongated axiall bearing sleeve 32 extending from the body 22, inwhich is mounted for rotation the inside tubular spindle 33 on the end of which is mounted the inside knob 34. A window 35 is provided to give access to the interior of the housing for purposes to be explained below.

The latch bolt retractor 40 consists of a generally rectangular frame having a thrust partition wal1 4|, and having the opposed sides taper to an end slot 42 at the end of the frame opposite said partition wall 4I, said notch being adapted to engage the latch bar 54 by means of the end lugs on the end thereof. The retractor 40 is adapted to reciprocate within the hollow body 2t, being provided with guide members 43 formed in the interior of the outside half portion 2|. The retractor 40 is arranged to slide spindle on the retainer key plate 44 which is disposed and adapted to slide between the guide members 43, the further structure and function of which will be described below. A coil compression spring 41 is interposed between the bottom of the hole formed between the half bodies 2| and 22 in the bosses 46, and the underside of the thrust partition wall 13|, of the retractor 40, thus normally forcing the portion of the retractor having the end slot 42 toward the window 49 in the body 2i) at which position the latch bar unit 50 is attached, as will be described.

The spring latch unit t consists generally of a cylindrical housing 5I which is adapted to t in a hole drilled from the edge of the door at right angles to the main body mounting hole in the door, the unit being held by the flush plate 52 which is countersunk and attached to the edge of the door by screws (not shown). The latch bolt 53 normally protrudes through an opening in the ilush plate, the latch bolt being connected to the latch bar 513 which extends through the other or rear en d closure 55. The latch bar 5d is provided with end lugs 56which, as described above, are engaged by the slot 42 of the retractor. The attaching tabs 5'! extending from the end closure 55 are formed to slide under the margins of the window i9 in the bodyV 20, the edge ofl the cylindrical housing 5I of the latch unit being arranged to press on the opposite or outside surf-ace of the margins of the window 49. The latch unit 5i? is thus slidingly attached to the body 23 at the window so that its longitudinal position relative to the cylindrical main body may be adjusted by sliding it alongthe marginal edge of the window. rThe coil springY 58 isl provided within the cylindrical housing 5IV abutting the end closure 55 and the inside end of the latch bolt 53, thus normally tending to push the latch bolt outwardly.

The outside tubular spindle 3B is provided with an outwardly extending detent button G which is adapted to be engaged by the retainer key plate 44 which as previously stated is adapted to slide between the guide members L33. The plate M is provided with an elongated central opening 6I for the spindle which permits the plate to be shifted flatwise, the legs $2 itting between the guides 53 and the spring boss 45. The plate is provided with a right angled lug 63 on its back side, which coacts with a small compression coil spring 54 which is seated in a groove 65 in the half body 2l, to normally holdv the key plate 44 in keying position behind the spring detent button 60. The outside knob spindle 3i) is released by manually raising the key plate 54 with a pointed tool T through windows in the body and the inside clamping plate.

The outside knob 3l consists of a knob body 'I6 having a rim portion 'il and a coaxial hub I8 which is connected to the rim portion by the disk 'I9 disposed inwardly from the rear face of the knob, and is provided on its rear side with a rim 88 dening the large opening on the rear face of the knob which is closed by the closure shell member SI. The main portion of the knob is covered by a shell spun or otherwise formed over the knob body to form the usual ellipsoidal door knob whose front face is provided with an opening 83 coinciding with the opening of the hub 'I8 where it abuts the front inside face of the knob, the margin of the shell around theV hole being turned in against the inside wall of said hub. The outside knob spindle 30 is attached to the face of the knob disk 'I9 by attaching ears 84 turned outwardly from the periphery of the spindle, holes 85 being provided therein for the screws 86 which are threaded into corresponding threaded holes 8T in the disk. The spindle is fitted over the extension 88 of the hub i3 and two slots B9 and 89A are provided 180 degrees apart to alternatively hold the pin chamber 3% of the pin tumbler lock QI. 'The slot S2 in the lock cylinder 33 for a removable cylinder operative key is exposed at the opening 83 on the front face of the outside knob 3|. When it is desired to reverse the position of the key slot 22 so that the unnotched side of the key will be on the lower side, for example, the spindle 33 is disconnected from the disk l@ by removing the screws t8, following which the knob is turned through 180 degrees and again attached to the ears 8f! of the spindle with the alternative slot A engaging the pin chamber and with the key slot in reversed position.

The inner end of the lock cylinder 93 is provided with a cap 9@ which is provided with a noncircular hole 95 which makes operative connection through the tongue 96 with the turning bar- 9'! for the key-actuated semi-cylindrical rollback lill, the said bar being centered axially within the outside tubular spindle 3) by the washer 98, stop arms 99 adjacent the tongue 96, and by the locking tab disk I @il rotatably mounted upon the bar el' adjacent the rollback IilI, said rollback extending from the rollback disk H32 which is non-rotatably attached to the end of the bar 9i, for example, by a tongue i533, whichV is held rigidly in the corresponding-hole Iiili inA A spacer member IE5 is said washer 9S and spacer |65. The lockingl tabdisk Ilil is provided-with a peripherally extending locking tab I'I, and is conveniently provided with an aligning tab Hi8 for the purposes described below.

The outside spindle 3@ is provided at its unattached end with a rollback I I Q which is a semicylindrical end o-f the tubular spindle, the longitudinal edges I II being adaptedto press alternatively when the outside knob is turned, upon the thrust partition wall 5I of the retractor 4:3 to thereby move the retractor and the latch bolt which is operatively attached thereto. In order to permit the necessary rotation of the outside knob 3I, a portion of the spindle 35 between the rollback IIi and thelocking slot |39; approximately one-half the circumference, is cut away to avoid interference with the locking tab IIl'I when this tab is not being depressed by the turn button and its associated parts, that is, when the outside knob 3I is freeto be turned to operate,

the latch.

The inside knob 35i is attached to the inside tubular spindle 33, the spindle extending throughthe knob to the front face thereof to define an opening II5 in which the turn button IIG is mounted. The knob is provided with a nish hub II'I extending toward the bodylZil and telescoping over a portion of the spindle 33, the end abutting the end of the inside bearing sleeve 32. The spindle 33 is provided with a circumferential retainer key slot I I8 which extends approximately one-half the circumference of the spindle to permit the turning of the spindle for a suiiicient amount to fully move the retractor di) by means of the rollback IIB at the end of the spindle 33. This rollback H9 at the end of the spindle 33 consists of a short segment of the tubular spindle with longitudinal edges I2 arranged to alternatively press upon the thrust partition wall 4| of the retractor 40, one edge being effective when the knob 34 is turned in one direction and the other edge when the knob is turned in the opposite direction, in either case to move the retractor and withdraw the latch bolt 53. The retainer key |22 iits in the retainer key slot I8 and in the retainer key slot |2| in the sleeve 32 of the body 20. The retainer key |22 is normally held down in place by a hairpin spring |23 which is attached at one end to the end of the cylindrical body 2u in the groove |24 by the dovetailed keeper |25.

The turn button I6 is connected to the spindle locking sleeve |21 by the bayonet bar |28 Whose other end is swivel connected at |29 to the spindle locking sleeve |21. The spindle locking sleeve |21, in its mid-portion, is cut away leaving a segment |33 of about one-third of the cylinder to avoid interference with the reoiprocatory movement of the retractor 40. The` other end of `the locking sleeve |21 is provided with a circumferential opening |30 on one side for the locking tab |01 and on the opposite side with a circumferential opening |3| for the aligning tab |08.

The bayonet bar |28 connecting the turn button ||6 and the locking sleeve |21 is provided With a bayonet pin |35 extending outwardly from the bar and adapted to follow the bayonet groove |36, which is provided in the -end of the inside tubular spindle 33 adjacent the turn button I6. An aligning tab |31 is provided opposite the bayonet pin tab |35 in order to hold the latter in the bayonet groove |36 when the turn button is pressed inwardly and turned to lock the button in its inward position. The longitudinal or inward movement of the button I |6 moves the locking sleeve |21 so that the end |38 of the opening |30 presses the locking tab |01 into the locking slot |39 in the outside spindle 30, this locking slot being on the side of the cylinder opposite the rollback H0. The locking tab |01 also engages the groove |40 in the outside bearing sleeve 29, thus preventing rotation of the spindle 30 relative to the bearing sleeve 29. The turn button ||6 is thus pressed inwardly and rotated in order to engage the bayonet pin tab |35 in the bayonet groove |3 and thereby hold the locking sleeve |21 against the locking tab |01, locking the outside knob against rotation. The inside knob, because of the swivel connection at |29, may be rotated without releasing the turn button; H6. thus the retractor and the latch bolt may be operated from the inside knob without effecting the locked condition of the outside knob.

The latch may also be retracted by the use of the removable pocket key K which operates the lock cylinder 93, which in turn is operatively connected through the turning bar 91 to the rollback |0|. This rollback |01 actuates the retractor independently of the rollbacks ||0 and I9 on the outside spindle 3i) and the inside spindle 33, and irrespective of the position of the turn button |6, thus permitting the retraction of the latch bolt at any time by means of the key K.

The body 20 is arranged to be positioned centrally in the mounting hole in the door D by means of the threaded clamping disk |44 and the removable clamping disk |45 disposed respectively on the outside and inside of the door. An opening |46 is provided in the clamping disk |45 for the inside bearing sleeve 32 and two windows are provided at diametrically opposite positions, one window |41 being provided to give access to the hairpin spring |23 holding the retainer key.-

l22, and the other Window,` |41A coinciding with the window 35 in the inner half 22 of the body 20, through which a long pointed rod or pick T may be inserted to raise the retainer key plate 44 against the spring 64 over the detent button 60, and thereby release the outside knob 3| and its spindle 30. The threaded clamping disk |44 is also provided with an opening |43 for the outside bearing sleeve 29. The position of the threaded clamping disk |44 relative to the outside face |48 of the body 20 is adjustable by rotationon the threaded sleeve 29 to correspond to the thick# ness of the door on which the set is to be mounted either before or after the body 20 is placed in the hole, following which the removable clampdisk |45 is attached by two or more screws |50 threaded into the face |49 of the inside half body portion 22, the heads of the screws |50 holding the disk, thus clamping the marginal edges of the disks against the margins around themounting hole in the door. .C

hub |52 is adapted to cover the joint between the,

knob closure member 8l and the outsideA bearing sleeve 29, thus securely hiding al1 screws Yand retainer keys, so that the outside knob and spindle` may not be tampered with.

An inside rosette |54 having a turned-over peripheral rim |55 is adapted to frictionally engage the peripheral edge of the removable clamping disk |45, the rosette being provided with a central opening |56 for the inside bearing sleeve 32, and having a nish hub |51 extending toward the inside knob 34 and covering the joint between the nish hub I|1 of said inside knob 34 and the inside bearing sleeve 32.

The advantages of my invention will be apparent. The rigid die-cast body and the integral elongated bearing sleeves for the knob spindles provide a durable lock set in which the knobs and spindles do not become loose and Wobbly after long use. The set is adapted to be used upon doors of slightly varying thicknesses, with the protrusion of the knobs being equalized on the two sides of the door. The latch bolt is independently retracted through a common retractor by the turning of either knob in either direction and also by means of a removable key turned in either direction. The outside knob may be xed through the inside turn button against rotation so that entry may not be eiected without the use of a proper key. This outside knob locking is unaffected by the subsequent use of the inside knob for retracting the bolt, and is also unaffected by the use of the removable key, the outside knob continuing to be locked against rotation after the key is removed. The outside knob is not released by pushing in the latch bolt, as in closing the door. The key slot for the removable key is easily reversible in position so that the lock may be properly positioned on either right or left hand doors and under the same circumstances the latch bolt unit may be reversed in position through its tongue and groove connection with the retractor. The outside knob and its attached spindle may be easily disconnected and removed for changing the key combination or for reversing the position of the key slot, by raising the retainer key plate by access with a pointed rod or tool through the provided windows in the body and thel insideclamping* plate, without removing.

the latch or lock body from the door, it beingv only necessary to remove the rosette and inside knob. The labor required for installation adjustment and resetting of my lock and latch set is reduced for reciprocation within said body,.said retractorl having a thrust plate against which a rollback on the outside knob: spindle presses to retract a spring latch bolt; means for rotatably holding said outside spindle in said outside sleeve bearing, said means for holding said outside spindle beingY releasably by means accessible from inside of the door after said body is-mounted therein, said means including a retainer key plate slidable between the inside surface of said body and said retractor, and a d'etent button near the rollback end of said outside knob spindle, said retainer key plate being normally spring held adjacent said detent button.

2. In a door knob lock and latch set having an 8 outerV knobv with its'. attached tubular spindle mounted for rotation ina lock body independent ly of an inner knob with its spindle, means for releasably holding saidouterknob spindle against removal from saidrbody while permitting axial rotation, said means'l including a retainer key plate disposed around said spindle, said spindle. being. provided with an outwardly extendingdetentlbutton abutting said retainer key plate, said retainer key plate being slidably movable. inside` said body atrightA angles to the spindle axisbehindi saiddetent button andrmeans to hold said plate adjacent said spindle at said detent button, the opening in said plate being elongated to permit shifting of said plate to disengage said detent, button and release said spindle.

ROBERT C. CERF, Ja.,

REFERENCES CITED The following'references areofV record in the ille of this patent:

UNITED STATES PATENTS Number Name Date 769,768 Phelps Sept. 13,1964 1,876,079 Schlage; Sept. 6, 1932 1,991,031 Schlage Feb. l2, 1935 1,994,134 -Ienst ,Mar. 12; 1935 2,046,342 Muck et al. July 7, 1936 2,076,125 Grimsrud Apr. 6, 1937 2,138,856 Harp Dec. 6,y 1938