US1654489A - Knob or handle lock - Google Patents

Description

E. L. TEICH KNOB 0R HANDLE LOCK Dec. 27, 1927.

2 sheds-sheet 1 Filed Feb 19, 1927 IN V EN TOR.

A TTORNEYS;

Dec. 27, 1927.

, E. L. TEICH KNOB QR HANDLE LOCK I Filed Feb.19, 1927 2 Sheets-Sheet 2 (g J I WM INVENTOR.

v BY M ATTORNEY.

Patented Dec. 27, 1927.

UNlTED STATES PATENT: OFFICE.

ERNEST L. TEICH, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO. THE AMERICAN HARDWARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF oolmnorxcur.

KNOB OR HANDLE LOCK.

Application filed February 19, 1927. Serial No. 169,468.

My invention relates to looks and has special reference to knob or handle looks that are particularly adapted for use on cabinet doors.

An object of the invention is to provide a novel and improved lock of this character.

Another object of the invention is to provide a lock of the character indicated in which the key may be withdrawn from the lock with the handle left unlockedso that "the latch-bolt or bolts on the door may be freely thrown and retracted as desired in opening and closing the door, and of course when desired the handle may be locked so as to lock the latch-bolts in latching posi tion.

The several features of the invention, whereby theabove mentioned and other 0b- 'jects may be attained, will be clearly understood from the following description and accompanying drawings, in which:

Figure l is a front elevation ofmy improved lock and a portion of a cabinet door to which it is applied, the door having a three-point latching device with the parts thereof shown in latched position;

Fig. 2 is a rear elevation of the door illustrated in Fig. 1, but showing the parts of the latching device in unlatched posiac tion;

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 1;

v Fig. 4 is a view in perspective of a lockbolt orming a component part of the lock; as Fig. 5 is a view in pers ective of the operating-spindle forthe latc ing device; and Figs. 6, 7, 8 and 9 are transverse sectional views taken on the lines 6-6, 7-7, 8-8 and 9-9, respectively, of Fig. 3.

so My improved lock is shown applied to, a

cabinet door 2, having a three-point latching device of a common construction As shown this latching device is provided with a rotatable hub 4 having a laterally pros 5 jecting lug or latch-bolt 6, and latch-bolts 8 that are in the form of flat rods having their inner ends pivotally connected with ears on the hub 4 and their upper ends extended through and guided by straps 10 seto cured adjacent the upper and lower edges of the door. With this type of three-point latching device, upon turning the hub 4 in a or rose 12 which, when used in connection with a' three-point latching device as above described, is secured by screws 13 on the front side of the door .opposite the hub 4, and is further provided with a knob or handle 14 having a cylindrical shank that extends through and is mounted for turning movement in the rose 12. The inner end of the handle shank is provided with a reduced portion 15, forming a shoulder 16 arranged adjacent a shoulder 17 on the inner surface of the rose. The rear end ofthe shank is provided with a rearwardly extending spindle 18 which is square in cross section and extends through a clearance slot in the cabinet door 2. The hub 4 of the three-point latchin device is mounted on this spindle and is heldthereon by a loclnnut 19, which holds the hub against the rear side of the door. Withthis construction it will be apparent that by turning the knob or handle 14, the three latch bolts of the latching .de vice may he rejected and retracted into and out of latching position, as above described.

The shank of the handle 14 constitutes a cylinder of a. pin tumbler lock having the usual. pin tumbler chambers 20 in which are mounted the pins 21 and coiled springs 22 serving to press the pins inwardly toward the center of the shank. A key-operated plug Q3 is mounted for turning movement in an axial bore in the shank and carries the pin tumbler sections 24. This plug is pro-' vided with the usual hey-way 25 for the key 28. A stop screw 28 is screw-threaded through an aperture in the cylindrical handle shank, and the key-operated plug is provided with a slot 29 which receives the inner end of the screw, the turning movement of the key-operated plug into and out of locking position being limited by the engagement of the end walls of the slot 29 with the screw 28. A stud or pin 30 is seltd '- and recelved in a transverse notch31 in a. lock-bolt 32 which extends through a transcured in a. socket in the rear end of the keyoperated plug, and has its rear end arranged eccentrically to the axis of the plug 1 so that upon turning the key-operated plug the latching In the lock of said Letters Patent when 23 in a counter-clockwise direction by means of its key 26, the eccentric pin 30 will act to shift the bolt 32 to project said end thereof into said notch. The'end' of the bolt substantially fits between the side walls of the notch 34 so that when it is projected therein the handle is securely locked from turning movement and thus the bolts of the threepoint latc ing device are held in latching position. To unlock the lock, the key-operated plug is given a quarter turn in'the reverse direction which, through the eccen-' tric pin 30 acts to shift the lock-bolt 32 to retract its end from the locking notch 34, whereupon the handle may be turned to release the latch-bolts of the three-point latching device and the cabinet door may be opened. When the 'bolt,32. is thus shifted to disengage its end from the locking notch 34 its other end is projected intoan elongated notch or slot 36 inthe rose 12. This notch 36 is of suitable lengthto permit the required quarter turning movement of the handle in a clockwise direction .to release device. The end walls of-the notch 36 are so positioned that when the handle is turned in a. counter-clockwise direction to door-latching position, the projectin end of the'bolt 32 by engagement with t e lefthand end wall of the notch 36 accurately limits the movement of the handle so ,as to position the other end of the pin opposite to the locking notch 34, it operated plugla quarter turn to projec bolt 32 into t e lockin notch. 34 to lock the handle as above descri' ed.

1 being then merely necessary'to give the keyt t e Except as hereinafter described, the parts I above referred to may be and preferably are the-same as the corresponding parts of the lock described and claimed in my Letters Patent, No. 1,611,391., dated December 21, 1926, to which reference may be'had for a' full and complete description of thesame.

the door is once opened and the key-is withdrawn, the latch-bolts are thrown into latchingposition and they cannot again be re-' tracted to permit the-door to be closed with.- out using the key; is once closed it cannot be again 0 en without using the key to retract the position as shown in Figs. 1

and also when the door;

1 in the two sets of pinmay be withdrawn from the lock with the handle left unlocked so'that the latch-bolts may be freely thrown and retracted as desired in opening and closing the door, the key being usedmerely for the pur locking and unlocking the door. ne advantage of this construction is that a erson in authority could unlock the hand e, for instance in the morning, and thereafter any he may open the door to enter, and when desired may close the door and turn the handle to throw the latch-bolt or bolts of the door into latching position, without locking the handle. The handle may then be turned to retract the latch-bolts without using the key, the handle remaining unlocked. Later in the day, the authorized person may, by means of the key, lock the handle and thus lock the door closed. To provide for this, the handle shank is provided with a second set of pin tumbler chambers 38 which pi'ntumblers carried by the key-o erated plug are positioned in alinement wit them when the plug has been turned iniw-clockose of are so arranged that the' wise direction to unlock the handle, this unlocking movement of the key-ope'rated plug they being provi ed with the pins 40 and coiled springs 42 correspo ding to the ins 21 and springs 22. Thus the pin tum ler chambers 38 permit the key to be removed and inserted when the key-operated plu has been turned to unlocked position.

this construction it will be apparent that the handle may if desired, be maintained unlocked after the key has been withdrawn sothat it may be freely turnedtoproject and retract the latch bolts when the door is either opened or closed and of course the handle may when desired be locked by using the'keyso as-t'o lock the latch-bolts in latching position.

In order to permit the pins and springs in the two sets of pin tumbler chambers to be readily inserted, it is necessary to permit access to the two sets through opposite ends of'the handle shank, resppctively. To provide for'this, the axial ore in which the key-operated plugis mounted extends completely through the handle shank, and 'the latch-operating spindle 18, instead of being made integral with the shank, is detachablyi secured to the innerend of the shank'by apertures .in a rectangular flange 46 on the forward With this construction it will'be apparent ,thatthe pins and springs may-be mserted bler chambers 20 i I end .of; the spindle and is screwt h; threaded intq holes in theend of the shank. a c bolts. .Inmypresent construction as illus-" means of" screws 44 which extend through and 38 and then, after the key-operated the rose upon t may be easily assembled. 7

urnin the plug into its other plug and lock-bolt 15 have been apphed to predetermined angufiirsosition. the shank as above described, the spindle 2. A look of the class escribedhavin ,in 5 18 may besecured in place. Thus by makcombination, a'handlehaving a shan a ing the spindle 18. separate from the shank latch-bolt connected with said shank and the parts of the lock carried bythe shank adapted to be projected and retracted by.

, turning the shank, a rose in which the shank As will be evident to those skilled in the 1 is mounted for turning movement into and 40 art, my invention permits various modrficaout of a predetermined angular position,

tions without departing from the spirit and means comprlsing a key-operated plu thereof or thescope of the appended claims. mounted for turning movement in sai What I claim is: shank into either of two predetermined an- I. A lock of the class described having, in gular positions with relation to the shank, 45

combination, a handle having a shank, a pin tumblers-mounted in the key-operatedlatch-bolt connected with said shank and plug and two sets of pin tumbler chambers adapted to be rojected and retracted by mounted in the shank for locking the plug turning the shan a rose in which the shank to the shank when the plu is in either. of

is mounted for turningmovemen't into and its said'predetermined ar positions and so out of a predetermined angular, position, the key is withdrawntherefrom, and means means. comprising a key-operated plug comprising a lock-bolt associated with the mounted for turning movement in said plug for locking the shank to said rose shank into either of two predetermined anwhen the shank is in said predetermined angular positions with relation-to the shank, gular position and the'plug is in oneofits 55 locking tumblers for-locking the plug to the said predetermined angular positions, and

-- shank when the plug is in either of its said for unlocking the shank from therose upon predetermined angular positions and the turning the plug into. its other predeterkey is withdrawn therefrom, and means asmined angular. position.

sociated with the plug for locking the shank In testimony whereof, I have signed my go to said rose when the shank'is in said prename to this specification this 17th day of determined angular position and the plug February, 1927.

is in one of its said redetermined angular positions, and for un ocking the shank from ERNEST L. TEICH.

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