US2082351A - Lock - Google Patents

Description

June 1, 1937. w. F. MOORE 2,082,351

LOCK

Filed Aug. 19, 1932 2 Sheets-Sheet 1 INVENTOR, Wa/laoe E Moore 4m n q ATTORN EYS June 1, 1937. w. F. MOORE 2,082,351

' LOCK Filed Aug. 19, 1952 2 Sheets-Sheet 2 INVENTOR, Wad/ace E Moore wyglmm A TORNEYS.

Patented June 1, 1937 PATENT OFFICE LOCK Wallace F. Moore, New Britain, Conn, assignor to The American Hardware Corporation, New Britain, Conn, a corporation of Connecticut Application August 19, 1932, Serial No. 629,415

12 Claims.

This invention relates to locks.

One object of the invention is a novel lock construction permitting the ready replacement of the key combination.

A further object of the invention is a lock embodying a pin tumbler lock cylinder and a knob and permitting the ready removal and assembly of the knob and the lock cylinder whereby the cylinder may be replaced by another look 10 cylinder of a different combination of tumblers.

A further object of the invention is a lock embodying a knob and a knob shank which are readily detachable and attachable for the replacement or change of the lock cylinder. A 15 further object of the invention is a lock of this character embodying a knob unit which is readily removable upon releasing the lock and inserting the key to release the key plug.

A further object of the invention is a lock of 20 the character indicated which requires a key to remove the cylinder and. which is not dependent upon the special settings of pin tumblers for its operation and particularly wherein the use of a 7 special key does not reduce the number of changes 25 possible on the pins of the cylinders. A further object of the invention is a lock of this general character wherein the cylinder may be replaced by the use of a regular change key or by the use of a master key.

30 A further object of the invention is a lock of this general character which is characterized by the simplicity of its construction and manipulation and which can be economically manufactured.

35 Further objects of the invention will hereinafter appear by reference to the accompanying drawings wherein:

Fig. 1 is a plan view of a door lock embodying the invention with certain parts of the door 40 lock omitted for convenience;

Fig. 2 is a section along the line 2-2 of Fig. 1;

Fig. 3 is a sectional view through the knob; Fig. 4 is a sectional view through the knob shank;

45 Fig. 5 is an end view of the latter;

Fig. 6 is an end view of a cooperative locking member;

Fig. 7 is an end view of the cylinder;

Fig. 8 is a view corresponding to Fig. 4; and

50 Figs. 9 to 14 inclusive are end views of the lock with part of the knob broken away showing the steps when assembling the lock parts and assembling the cylinder and knob.

Referring to the drawings, parts of the door 55 lock casing 3| and the door lock mechanism have been omitted for convenience in illustration. The invention is illustrated as embodied in a door lock comprising a knob I, and a knob shank 2. It is understood that the shank 2 may be locked by a mechanism, omitted from the drawings, against 5 rotation and when this is thus locked the door can be opened only by the insertion of the key within the cylinder plug; whereas when this shank 2 is unlocked, as for example from the inside, the whole knob I together with the shank 2 may be turned to unlock the door. The shank 2 is journaled in a suitable bearing 3 carried by the door lock case.

The knob assembly includes the knob I, the shank 2, the lock cylinder 4, and a locking ring 15 5. The lock cylinder 4 is of standard construction except that the plug 6 has a shoulder I formed with a notch 8 (Fig. 7), the latter having one straight side and one side rounded olT at 9 to form a cam surface. The shank 2 and the knob I are adapted to be fastened to each other by a relative rotary movement and in the particular embodiment shown they are provided with mating screw threads for this purpose, the enlarged end 2' of the shank having external threads for engaging the threaded opening I of the knob. The screw threaded parts of the shank and knob are provided with looking slots I0 and I I. One of these members, as for example the shank 2, is provided with a latch or trip I2 pivoted at I3 which is disposed in the slot ID of the shank and is adapted to enter the slot II to lock the shank and the knob together in their assembled position. This trip I2 is normally held in looking engagement-by means of the shoulder I formed on the end of the cylinder plug, and

is provided with a heel I4 which engages the periphery of the shoulder or collar 1 in the locked and assembled position.

The ring 5 is provided with a flaring skirt I6 which in the assembled position of the parts makes a close fit with the interior peripheral edge ll of the knob, as indicated in Fig. 2. This ring 5 is provided on its interior peripheral edge I9 with a slot I8 having rounded oil. or inclined cam sides I8 for cooperating with the trip I2 as will hereinafter be described.

In the assembled position of the knob and cylinder as shown in Fig. 14, the slot I8 of the ring 5 and the slots III and II in the shank and knob respectively are in alinement, with the trip I2 alining these three members and holding them in alined position. In the particular embodiment therein shown the cylinder and cylinder plug with its notch 8 are as indicated in 45 trip [2.

Fig. 14, the notch 8 being disposed 135 from the alined slots and keyway 20, that is, with the key in a vertical plane and knob and shank locked against rotation.

With the knob assembled as in Figs. 1, 2 and 14 the knob may be removed as follows:

The key is inserted in the keyway 20 (Fig. 14) to permit the turning of the plug 5 and hence the spindle 25 relatively to the cylinder 4 and, of

course; the shank 2 is unlocked to permit the turning of knob I and shank 2 in the door lock. The key plug is then turned relatively to the knob and shank and in the particular embodi ment of the invention shown the key is then 15 turned counter-clockwise' wig'; :14)- a nd the-knob and shank are turned clockwise to'bringthe slot -25 is disposed between the end of the key plug giandithezmoyable abutment plate 28 within the or notch 8 into alinement with thetripIZ. "The trip I2 is then caused to; drop into .theranotch 8 either by gravity or by the turning of" the ring 5 to force it into this notch, thereby re leasing the knob. I from the shank 2 and permitting the relative turning thereof=to unscrew the knob I' from shank 2. The cam surfaces .I8 of the slot.I8 formed in the ring function to forcethe trip..l2.into thenotch 8 and out of the slot .I I formed in the knob I. The removal of the knob ,I permits the replacement of the .lock. cylinder.with one of. aldifferent combination within the knob .I. 3 'I'hesteps in the assembling or, reassembling of the knob are indicated in Figs. 9 to 14. The cylinder. 4 is first. inserted into the knob I with the projection 22 thereof placed. between the lugs 23 formed on the interior of the knob. The key is then inserted .into the cylinderand the square ,ho1e.24. in the cylinder. plug is placed over the spindle 25v in. the. body of the door lock. .The ring 5 is turnedto aLpositionwhere the sl0t..I8 isout of .alinementwith the trip I2. The knob Imay then bescrewed partly onto the shank 2. The trip ..I2 is in, the" position indicated in Fig. 4 and the knob. I.is..arrested by the .shoulder I of thev plug coming into engagement, with the face I5' of theheel M. of the .The.-initia1 position before .the screwing operation begins is indicated in. Fig., 9. Fig. 10 indicates. the relative. position of the knob I. and the shank 2with .the shoulder I in position against the face 15, thatdsinthe particular embodiment of the inventionhereinshown. ,It is then necessary vto bring the notch. 8 into alinement with the slots .10 and I I to permit the trip I2 to enter-the notch- 8. Thisis effected by rotating the key plug 6, counter-clockwise from the. dottedposition shown in Fig. .10 to the full line .position. there-shown, -namely-.90, and by turningthe knob I and shank 2 clockwise through P as indicated in Fig. 11. Theknob I-.and the shank 2 now turn together by reason of the engagement-between, the zShOlJldEl I and the heel I4 ofthe trip. The notch 8 then being inalinement withthe trip vI2 the-cylinder togethen-with the plug I maybe pushed hometo the position indicated in. Fig. 2v whereupon the knob I. may

- 165 be screwed home to the, .final position indicated in'Fig. 12. The next step isthet urning of the ring 5 with the slot I8 into alinement with the nslOtS=|0"and indicated in Fig. 13, whereupon the-key is then turned clockwise tothe vertical positionshown in Fig. l4. .Theturni-ngxof key plug. 6 causes the cam-surface 9' of..,the :notch :8':to;1cam-the 'trip I2 into' the slots I I and I8 and ,theshoulder I1 holds .-these .-parts in :theposition indicated in-Fig-. 14.

In the particular embodiment shownithe knob I together with the shank 2 are turned to the position shown in this Fig. 14, the notch 8 being disposed 135 from alinement with the slots II), II and I8. It is observed that with the shank 2 locked in position against turning, the key may be turned to lock and unlock the door without the notch 8 coming into alinement with the slots I0 and II. It is only when the shank 2 is unlocked to permit an approximate 45 turn in either direction that the notch 8 and'the slots III and II may be brought into alinement which is utilized for the assembly above described.

In the final assembly the ring 5 is retained in looking position by the trip I2 entering the slot: 3 I 8. Y

A'coil spring 2! coiled about a roll back spindle knob 'shank, the abutment plate being in the form ot a, washer resting upon an annular shoulder formed on the interior OfizthG vshank.

This-.spring maintains the rend-of the cylinder 'againstthe outer .end wallzduring the unscrewing of the knob.

. I claim:

1. .A lock-comprising a knob, a knob'shank, a cylinder with a. key plug contained within .the knob, said knob and said shank being adapted to -be fastened. together byarelative rotary movements, means for locking theshank and the knob against relative turning movements. and means operative upon relative turning .movements-.;of the key plug andthe knob for. unlocking said locking means, whereinthelocking means comprises a pivoted latch. member, and=saidknob and shank are provided with..slots, saidlatching means operating whensaid .slots are in alinement.

2. A lock comprising a knob, a knobshank, a cylinder with, a key,,plug .contained within the knob, said knob, and .saidv sha'nkbeing adapted to be fastened together. by. .relative rotary movements, means for lockingthelshank and the knob against relative. turning movements andi-means operative upon relative turning movements "of the. key plug and the.knob.for.unlocking.ssaid locking means,. wherein the. lockingimeans comprises a pivoted latch.member.operating.in registering' slots formed in the shank and the knob, and.whereinthennlocking means comprises a .notchformedin the key plug and. adapted tobe brought into alinementwith :the slots..in...the shank and'knob. Y

3. A look comprising a knobpa knob '1 shankea cylinderwith.askey plug contained within'the knob, said knob andsaid shank being adapted-to be fastened together by rrelative .rotary' moyements, meansfor lockingzthe shank-andtheknob against relative turning-movements andwmeans operative upon relativeturningw movements .;0f the key plug and the-knob .fonunlockingw-said locking means, wherein thenlocking meansv zoom- -prises a pivoted latch-member operating in registering slots formed in the shank and the:knob,

and wherein.the unlocking means. comprises a r notch formedin, the cylinder plug andadapted to be brought into alinement with the slots inzthe shank and knob and aring'having acamsurface for engaging the-.latchmember and Iorcing the sameinto said slot.

- 4,. A lock comprisinga knob, a::cylinder andia key plug contained .within' saidknob; a knob shank upon which said;-knob, is screw threadedly attached. and means for-clocking .the: knob. to the knob;.shank comprising. 81?. pivoted; latchzmember and a swivelling ring with a slot and cam surface cooperating with said latch member.

5. A look comprising a knob, a cylinder with a key plug contained within the knob, a knob shank screwthreadedly attached to said knob, said knob and said shank comprising registering slots, a latch member carried by one of said members and adapted to enter said registering slots, and a swivelling ring cooperatively engaging said latch member to hold the latch member out of looking engagement and to permit the locking engagement, the said key plug also having a part cooperating with the latch member to permit the releasing of the latch member and to compel the engagement of the same.

6. A look of the character set forth in claim 5, a shoulder on said latch member disposed in the path of and engaged by the key plug to cause turning of the knob and knob shank in unison after the knob is partially screwed upon the shank, said plug being provided with a slot which is alinable with said latch member to permit the longitudinal movement of the plug to permit the shoulder to enter the slot for the completion of the screw attachment of the knob to the knob shank.

7. A lock of the character set forth in claim wherein the swivelling ring is provided with a cam surface for forcing the latch member out of locking engagement with the knob and the knob shank and the key plug is provided with a cam surface for forcing the latch member into operative engagement.

8. A look comprising a knob shank, a knob, a lock cylinder with a key plug contained within the knob, a spindle for operating a door lock associated with said key plug, means for attaching the knob to the knob shank and latching means pivotally mounted upon the shank and operative 3 upon relative movements of the key plug and knob shank for locking the knob to the shank.

9. A look comprising a knob shank, a knob and a lock cylinder and key plug combination which is readily detachable and attachable as a unit to the knob shank for the replacement of the cylinder, including a latching means pivotally mounted upon the shank which is released upon turning movements of the key plug and knob shank.

10. A look comprising a spindle, a knob shank, a knob, a lock cylinder with a key plug contained within the knob, said key plug adapted to engage said spindle, means for attaching the knob to the knob shank and latching means pivotally mounted upon the shank and operative upon opposite turning movements of the key plug and knob shank for locking the knob to the shank and a key for releasing the key plug from the cylinder to first control the knob locking means and thereafter operate the spindle.

11. A look comprising a knob shank, a knob and a cylinder combination, and latching means pivotally mounted on the shank to permit the knob and cylinder combination to be readily detachable from or attachable to said knob shank as a unit for the replacement of the cylinder.

12. A lock comprising a knob shank, a knob, a cylinder and key plug combination which is readily detachable from or attachable to said knob shank as a unit for the replacement of the cylinder and latching means pivotally mounted on the shank for securing said combination thereto, said combination being detachable upon imparting to the key plug and the knob a relative turning movement of a predetermined degree to release said locking means.

WALLACE F. MOORE.

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