US2083358A - Key and permutation operated door lock - Google Patents

Description

June 8, 19.37. D. M. BELL KEY AND PERMUTATION OPERATED DOOR Loox Filed NOV. 28', 1953 6 SheetsSheet 1 June 8, 1937. D, M, BELL 2,083,358

KEY AND PERMUTATION OPERATED DOOR LOCK Filed Nov. 28, 1955 6 Sheets-Sheet 2 Het-4 June s, 1937. D. M, 'BELL 2,083,358

KEY AND PERMUTATION OPERATED DOOR LOCK A Filed Nov.4 28, 1933 6 Sheets-Sheet 3.

o @V f( 1 w N wv N- P June 8, 1937. D. M. BELL KEY AND PERMUTATION OPERATED DOOR LOCK J6 L65 Sheets-Sheet 4 Filed Nov. 28,

. June 8, 1937. D. M. BELL KEY AND PERMUTATION OPERATED DOOR LOCK Filed Nov. 28, 195s e sheets-sheet 5 Jm/ZUZ' 777.

June 8, 1937. D. M. BELL 2,083,358

KEY ND PERMUTATION OPERATED DOOR LOCK Filed Nov. 28, 1935 6 Sheets-Sheet 6 f7@ EL3' 79 y ai ' 4a HG, 24 K9 Patented June 8, 1937 UNTED S'TES *PATENT OFFICE Dinwyn M. een, River Forest-1u., assigner to Dudley Lock Corporation, Chicago, Ill., a corporation of Illinois Appeeetien Nevember 28, .1933, serial No. 700,104

6 Claims.

rIhis invention relates to improvements in door locks, more particularly of the spring bolt type, and is directed specically to providing both combination and key operated means for controlling the fastening mechanism of clothes lockers and the like, although many features of the invention are adaptable and useful for other kinds of locks.

Among the objects of the invention are: to

lo provide a dial operated combination lock combined with a key operated cylinder lock which is simple in construction and reliable in operation;

to provide such a key-combination lock in which the key and the combination operated mechai5 nisms are substantially independent in their operative relation to the lock bolt; to provide a combination lock in which the locking elements and also the dial are automatically displaced When the bolt is operated, or the door opened, so that .3 the lock is immediately reset for locking and the dial is moved so that the last significant number thereon will not be disclosed.

Further objects are to provide a spring bolt lock in which the bolt may be operated at any period of time after the key is inserted and turned so that the door may be left closed and unlocked, by leaving the key in the turned position. And another object is to provide a lock which is automatically placed in locking condi- 39 tion whether the door is open or closed as soon as the key is removed from the lock, thus reducing the liability of the locker being unintentionally left unlocked, and making it apparent that the door is locked, or in locking condition 3;; so that the door will be locked when it is closed,

if the key is not in the lock.

In accordance with this invention a key comination lock may be provided having a cylinder tumbler lock and the bolt may be released either i) by the combination or by a key, which may be a master key for opening a series of locks, or a key individual to each lock. Also the combination be reset by the use of a master resetting key, thus providing an easily operated but pro- .;5 tective means for changing the combination, so that anyone ceasing to use a particular locker or cabinet on which the lock is installed cannot again have access thereto by knowing the combination previously used on the lock.

50 Another important feature of the invention is that the combination part of the lock may be completely assembled before the cylinder lock barrel is incorporated therein, the barrel being insertable into the lock, from the exterior there- 55 of, into operative relation with the lock mechanism. ,The assembled locks may thus be used as merely combination locks, or the key features may be added as desired.

, This enables steady economic production as it is economically possible to produce locks in large l quantities having a variety of different combinations, but the number of locks for a particular key series is necessarily limited, and the keys to be used cannot usually be determined until the installation is known and the locks shipped, and the number of locks in each order is, of course, limited. In many instances new locks are supplied to institutions having the same make of locks, andthe new locks have to match the keys already in use; and while, by this invention, the

cost of inserting or changing the key lock cylinder is smallma.king up the combination elements in small quantities after the orders were received would add materially to the cost of production. Also provision may be easily made for changing the keys, by inserting diiierent tumbler lock cylinders Without dismounting the locks.

Heretofore provisions have been made for changing the combination or manner in which the dial is operated by changing the positional relation between the dial and the lock mechanism with the use of an instrument, but the instrument merely acted upon a lug or some sort of a catch device for releasing the dial without in any manner alecting the other parts of the lock.

In this invention, the dial setting is placed under the full protection of the key operated lock mechanism, such as a tumbler lock cylinder, so that it is necessary to actually operate and unlock the lock itself before the dial setting can be altered. This places the dial setting under the protection of the key lock tumblers, thus giving the same security as is given by the lock itself, and it also necessitates the possession of the master key.

Other objects and advantages will become apparent in the following description with reference to the accompanying drawings, in which:

Fig. 1 is a front elevation of the lock case 3l and mechanism, with the cover 32 removed.

Fig. 2 is a detail view taken as a section on the line 2-2 of Fig. 4.

Fig. 3 is a partial section taken on the line 3 3 of Fig. 4.

Fig. 4 is a plan section of the complete mechanism installed on a door 33, taken on the line 4 4 of Fig. l.

Fig. 5 is a plan section on the axis of the cylindrical barrel 34, line 5-5 of Fig. 1.

Fig. 6 is a. sectional view looking from the front of the case, showing the front or third combination disk 35, and taken on the line 6-6 of Fig. 5.

Fig. '1 is a detail section looking from the rear, taken on the line 1-1 of Fig. 5.

Fig. 8 is a detail section looking from the front showing the disk spacer 36 and middle or section combination disk 31, taken on the line 8-8 of Fig. 5.

Fig. 9 is taken on the line 9-9 of Fig. 5, and shows the rear, or first combination disk 38.`

Fig. 10 is a section lookingfr'om-the. rear, taken on the line |9-i6 of Fig. 5.

Fig. 11 is a sectional view looking from the right hand side of the case on the line of Fig. 1.

Fig. 12 is a sectional view on the vertical section line |2|2 of Fig. 1', with parts shown in section and parts shown in full. u

Fig. 13 is a side elevation of the tumbler barrel 34, 'viewed from the same-direction as the parts shown in Fig. 12.?

Fig. 14 is a front view of the complete lock mounted on a door 33, looking at the face of the door.

Fig. 15 isA a similar view, with the dial 39 and escutcheonv or door plate 40 removed.

Fig. 16 is a rear view of the dial 39.

Fig. 17 is 5a viewfsimilar to Fig. I4,- showing a master key 4| inserted in the lock.

Fig. 18 is a view looking from the right of Fig. 1'1, with parts shown in section on the vertical section line.

Fig. 19 is a View similar to Fig. 18, with a combination resetting key 42 inserted.

Fig. 20 isa view similar to Fig. 18 but showing the resetting key 42 turned and pressed in to disconnect the dial 3-9 from the combination driving disk 43.

Fig. 21 is a side View of the master key 4|.

Fig. 22 is a side view of the resetting key 42.

Fig. 23 is anenlargedview similar to Fig. 19.

Fig. 24 is an enlarged view similar to Fig. 20.

Fig. 25 is a fragmentary sectional view taken similarly to Fig. 5, but showing a substitute knob for the lock installed on a. thicker 'door than that shown in Fig. 5.

The case 3| is cast with a cylindrical boss 44 formed in the rear wall thereof, and in the boss is fixedly mounted a" cylinder lock housing or cage 45, in which is rotatably mounted the key lock barrel or cylinder 34. The bore of the housing has longitudinal grooves 46 for receiving the ends of the tumblers 41, the tumblers being slidably mounted in the barrel and retractable by inserting either of the lock keys 4| or 42 in the longitudinal key slot, 48, formed in the barrel, to withdraw the ends of the tumblers so that the barrel may be turned to unlock, as will be understood.

The barrel 34 is formed in two interlocking halves which are held together by a` washer 49, pressed against the shoulder of the large rear portion 5t* of the barrel, and a at sided washer 5| which is riveted on and covers the key slot at the rear end of the-barrel, as best shown in Figure 10.

In the bore, near the rear end of the boss 44 is formed an annular rib 44a, and the end rim of the boss is slotted to receive the diametrically opposite lugs 52 which are formed on the periphery of the washer 53. The washer is seated on the rib 44a and is held in position by the cap 54 which is pressed onto -the end of the boss 44.

The hole 55 inthe'l washer 53 is flattened at its opposite sides and conforms to the non-circular periphery of the rear barrel washer, 5|, but the washer 53 is positioned so that the sides of the hole are in angular relation with the flats of the end washer 5| when the barrel is in locked position so that the barrel is thereby held from rearward longitudinal movement until said barrel is unlocked and turned to unlocking position in which the end washer registers with and will enter the washer 53, thus permitting a limited endwise motion rearwardly.

The portion 56 of the barrel is flattened at opposite sides to fit into and operatively engage in a conformingly flattened bore 51 in a cam disk 58. The barrel also extends through a sleeve 59., on which are loosely mounted a plain spacing washer 60, adjacent the cam disk; then a toothed disk 6|; the first, second, and third combination disks, 38, 31 and 35 respectively, enumerated in the order in which they are set for unlocking;

the driving disk 43; and the fluted connecting or clutch ring 62. The ring 62 has a shouldered bore and seats directly on a shoulder 56a formed on the end of the barrel, as best shown in Figure 5.

The combination disks are separated by hook shaped spacers 36 and 63 which provide annular spaces around the barrel for the rotation of the interconnecting lugs,-lug 64 formed on the outer surface of the first disk 38, lug 65 formed in the inner surface of the second disk 31, lug 66 on the front surface of the second disk 31, and lug 61 on the inner surface of the third disk 35 as best shown in Figure 12.

The spacers are supported and held in position by a forwardly projecting nger, 58a, which, for convenience, is integrally formed on the cam disk 58 and projects through conforming rectangular apertures in the ear portions 6B of the spacers 36 and 63.

'I'he toothed disk 6| is connected to the first disk by means of lugs 69, formed on the toothed disk, which engage in suitable notches 38L in the bore of the rst disk, 38, as best shown in Figure 3 and Figure 9. The combination disks are rotatably connected when their lugs are in contact, and the driving disk 43 is connected to the third combination disk by peripheral lugs 1|), formed on the driving disk, which engage in suitable notches provided in the margins of the third disk 35. The hub 1i of the driving disk is transversely slotted to receive lugs 12, see Figure 12, which are integral with and project inwardly from the connecting ring 62, the medial portions of the lugs 12 being recessed and the hub 1| being encircled by a wire 13 disposed in a peripheral groove 14, formed near the end of the hub so that the ring 62 and driving disk are extensibly connected.

The case is enclosed by the cover 32 which has flange lugs 15 on the upper and lower sides thereof which conform to similar lugs 16, formed on the case, the cover being secured in position by means of screws, 32a, indicated in broken lines in Figure 15; and on the cover is provided a hub 11 in which the boss 1i, of the driving disk, is .rotatably supported.

The case is mounted on the rear of the door 33 with the hub 11 projecting therethrough; and on the outer end of the hubis mounted an apertured disk 18 having an outwardly projecting peripheral ange 'i9 in which is loosely seated the annular knob and dial member 39. The disk or flange, 80, which carries the dial graduations, is covered by the door plate 4|) which has a central recessed annulus accommodating the periphery of the dial flange and engages in a circumferential groove provided in this portion of the conical dial surface 80. Through the plate, door and flanges, 15 and 16, are inserted bolts 8|, secured by nuts 83 on the inner ends, to secure the lock to the door.

In the inner end of the bore 84, of the knob member, 39, is provided an annular recess 85 which terminates at an inwardly projecting circumferential rib 86, formed in the boreyand in the recess are formed two oppositely disposed lugs 81 and 88, the lug 88 being in alignment with the zero of the dial markings, shown in Figure 14. The rim of'the connecting ring, 62, is fiuted for changeable engagement with the lugs 81, 88; and normally the key tumbler barrel is pressed forwardly by a small coil spring 89, recessed in the inner end of the barrel and pressing against a plunger pin 90, guided in the spring recess, which abuts against the end ofithe cap 54. The front end of the barrel' contacts with the shoulder formed in the bore-of the ring, 62, so that the ring is thereby projected into the recess 85 and the lugs 81, 88 are maintained in engagement with corresponding flutes of the ring, 62.

The inwardly projecting rib, 86, serves to limit the insertion of the key, 4|, as seen in Figure 18; thus it is important that in all installations, the relation between this rib, 88, and the tumbler barrel be kept constant. Figure 25 represents a situation in which the panel, 33X, on which the lock is mounted, is considerably thicker than the panel, 33, shown in Figure 5. For this situation a substitute knob, 39x, is provided in which the rib, 86X, is located nearer the inner surface of the knob than the rib, 86. This-compensates for the difference in panel thickness. Driving lugs similar to the lugs 81 and 88 of Figure 24, are associated with the rib- 86x adjacent the same for connecting the knob with the flutes-in the extreme end of the driving ring, 62; these lugs, however, do not occur at the plane at which section is taken in Figure 25. To provide for a considerable range of panel .thicknessesa series of several knobs, differing only in the location of the rib, 86, and the driving lugs just mentioned, represent the only Variations necessary. Such knobs will all have the same external appearance, and will be interchangeable in the door plate, 40.

To change the combination of the lock, or the relation between the dial and the driving disk, a resetting key 42 is used which has a shoulder portion 9| of such width as to pass through the dial and abut against the end of the ring 62. When this key is inserted the pins 92, of the tumblers 41, are engaged in the key groove A93, which is shaped to position the'tumblers so that the ends are withdrawn from the grooves .46, and the key and barrel may be turned to the unlocked position, as shown in broken lines in Figure 1'1. In this position the resetting key may be pressed in, as shown in Figure 20, and the connecting ring moved out of engagement with the lugs in the dial recess. Then the dial may be rotated freely to a number of different positions, corresponding to the number of flutes in the connecting ring, and when the key is released the spring 89 again presses the ring forwardly into the dial recess where it is re-engaged with the lugs in the new position of the dial.

The cam disk 58 rides on a raised surface, 3| a formed in the lower portion of the back wall-of the case, and a curved spring washer, 43a, is inserted in between the flange of the driving disk and the cover 32. This holds the combination disks in position while the tumbler barrel is moved endwise, the hub, 1|, of the driving disk, 43, being normally spaced from .the ring, 62, to permit inward movement of the ring. The sleeve, 59, has lugs, 59a, shown in broken lines in Figure 3 and Figure 5, which engage in the notched bore of the cam disk, 58, and the disks or paits which are mounted on the sleeve are centered andheld in position in the case by the spring, 43a. Hence the case and parts therein may be completely assembled-in position and the tumbler barrel thereafter inserted from the rear, the cap,

54, and washer, 53, being removed. Therefore,

quantities of the locks, cases and mechanism may be assembled before the particular key series arrangement of the tumblers in the barrels is determined. Then the locks may be completed in small quantities, if desired, by inserting tumbler barrels of any selected series.

For master key operation of the lock, a key 4| is used, which has a wide shoulder portion 9d which abuts against the rib 86. This prevents the master keyfrom being pressed in to move the tumbler barrel endwise.

'Ihe lock is provided with a bolt 95 which is arcuate in form and is pivotally mounted on a post 96 which extends rigidly from the bottom `of the case, directly below the stack of disks described above. The bolt has a portion which projects through an aperture 98 in the side of the case, and engages with an operating member of the door fastening mechanism, such as a lock bar 91 indicated in Figure 17. The bolt is built up of four plates riveted together, the two middle plates 95 being shortened, as shown in Figure 3, and the upper and lower plates each having a notch 95@l formed in their upper ends for locking engagement with the transverse portion of a stirrup shaped latch 98 which is pivotally mounted on a post 99 rigidly projecting from the rear wall of the case, the latch being urged into such engagement by a coil spring |00. The bolt is normally urged outward by a coil spring |0|, as shown in Figure 3.

Adjacent the combination disks is a post |82, rising from the bottom of the case, on which is pivotally mounted a U-shaped unlocking lever |03, which has a nger |04 formed on the inner leg portion which strikes against a lug |05 formed on a trigger plate |86, pivotally mounted on the post 99, behind the latch 98. The plate |95 has a transverse lug |01 which strikes against the i lower edge of a projecting arm |08 of the latch 98 to rotate the latch out of locking engagement with the bolt when the lever and trigger plate are rotated into the position shown in broken lines in Figure 2.

On the transverse portion of the lever |83 is provided a wide finger |89, which is pressed against the edges of the combination disks by the action of a coil spring |03a which urges the lever |03 in clockwise direction. Each of the combination disks is provided with a peripheral notch |8 so that when the disks are rotated by correctly operating the dial to bring the notches all inte registering relation with the linger |09, the lever |03 is released for rotation by its spring |93n to move the latch 98 away from vthe bolt, and when any one or all of the disks are again turned out of said relation the nger |09 is cammed out and the lever is thereby rotated to release the latch i to disk, 6|, by lugs, 69.

for re-engagement in the notch 95d when the bolt is returned to locking position.

It will be understood that in the lock illustrated the bolt 95 is returned to locking position simply by the action of its spring lll I and that its movement to unlocking position is effected by manipulation of a member such as the lock bar 91, shown in Figure 17. As illustrated, this bar is vertically slidable on the door 33, and is formed with a notch 91E, providinga shoulder, 91h, which engages with the face 95a of the bolt 95. When the bar is lifted by a handle, not shown, it swings the bolt 95, upwardly, provided the latching stirrup member 98 has been swung to bolt-releasing position. And usually in connection with a locking mechanism of this type the `lock bar 91 is provided with an automatic -detent which holds it in raised or unlocked position, and thus holds the bolt in unlocked position until the door -is closed, whereupon the bar 91 automatically falls to locking position and the bolt is swung downward by its spring ll. Such detent mechanism is familiar in the art, (see, for example, Patent No. 1,387,643 to Erickson, et al.) and there is no need to illustrate it in detail.

It is manifest that the door may be opened at any time after the combination has been set, and provision is made for throwing oi the combination setting and moving the dial away from its last position, as followsz-When the bolt, 95, is moved inward in its unlocking movement, its projection, III, strikes the tooth, 6I, formed on the disk, 6|, and rotates said disk, and with it the rst combination disk, 38, which is connected On the bolt there is pivotally mounted a pawl, H2, which catches in teeth H3 formed in the third disk 35, shown more clearly in Figure 6, and causes the displacement of the third disk, and hence the dial, on the return or outward movement of the bolt.

The pawl, H2, is pivotally mounted on a pin H2a which is riveted to the bolt plates, and the pawl is urged in clockwise direction by a coil spring H4, one end of which engages a bushing I l 5 placed on the upper end of the post 96. The other end of the spring presses against an upturned lug, HZb, formed on the pawl, which projects downwardly to strike the wall of the case and rotate the upper end of the pawl away from contact with the disks when the bolt is projected in locked position, as shown in Figure l.

For the key operation of the lock, the cam plate 58 is provided with a projection H6 which normally, in locked position, is in contact with a stop shoulder H1, formed on the back wall of the case. Since the cam plate is rotatively connected to the barrel, as described above, the stop shoulder H1 determines the normal position of the barrel, and the axial position of the cam is such that when a key is inserted and turned to the right the projection H6 strikes against the arm IUS, of the latch 98, and the latch is thereby rotated to unlock the bolt; and in the fully operated position of the cam plate the end of the arm l08 rides up onto the circumferential surface of the lug HG, as shown in broken lines in Figure 3, so that the latch is held in unlocking position, against the action of the spring |00, as long as the key is left inserted in the lock and turned to the right; but there is no turning reaction against the key, since the pressure of the spring latch member 98 is exerted radially against the lug H6. Therefore, the door may be opened at any time after the key has been turned; but the key cannot be removed from the lock withoutplacing the lock in condition to re-lock the door as soon as it is fastened; the engagement of pins 92 with the grooves of the key prevent its removal except in the locking y position.

Thus the door may be opened by either combination or key; the combination is broken when the door is opened; the dial is displaced when the door is closed; the door is always in locking condition unless the combination is set or the key is in the lock, hence, it is nearly impossible to unintentionally leave the door unlocked; and the combination may be changed at any time under the control of a specially 'formed key requiring the operation of the lo'ck itself.

While there is shown and described herein certain specific structureV embodying this invention, it will be manifest `to those skilled in the art that various modifications and rearrangements of the parts may be-rnade without departing from the spirit and the scope of the invention, and-that the same is not limited to the particular form herein shown and described, except in so `far -as `indicated by the appended claims.

-I claim':

l. In a combination lock including a case, a combination tumbler driving member rotatably mounted in the case and projecting therethrough, a rotatably mounted dial engaged by the projecting end of said member, and keyoperated means for releasing said driving member to permit moving it axially for disengagement from the dial, said dial and member being formed for re-engagement in a diierent angular relation. Y

2. In va lock, a case, a knob rotatably mounted in front of the case, a tumbler lock barrel rotatably mounted in the case, combination mechanism in the case and a driving disk therefor mounted on the barrel, a ring slidably connected with the disk and projecting through the case into engagement with said knob, and means in the case acting to hold the disk engaged with the knob when the -barrel vis in locked position, and permitting endwise movement of the barrel and disk when the barrel is unlocked for disengaging the disk from the knob.

3. In a combination lock a rotatably mounted knob, a dial and an index one of which is fixed and the other rotatable with the knob, a tumbler lock barrel mounted for rotation co-axially with the knob, a plurality of combination lock disks rotatably mounted on the barrel, a bushing connected for driving the disks and rotatably mounted on' the end of the barrel adjacent said knob, means by which said knob and bushing are operatively engaged, a casing enclosing the barrel and providing a non-circular recess opposite the inner end of the latter, said end of the barrel being non-circular in shape to conform with said recess when the barrel is turned from its normal locked position, the barrel being adapted to be released and .turned by a key to permit endwise movement of said non-circular portion into the recess to cause axial disengagement of the bushing from the knob.

4. In combination, a tumbler lock mechanism and a combination lock mechanism comprising a rotatably mounted tumbler barrel, a set of combination disks mounted for rotation coaxially with the barrel, a rotatable operating knob for the combination mechanism, a dial and an index one of which is xed and the other rotatable with the knob, said knob having a central aperture for admitting a key to the end of the barrel, and the combination disks being in endwise engagement with the knob, connecting means effecting such engagement and movable axially with the barrel, said barrel including means for preventing its endwise movement in locked position, and also including means for preventing its rotation releasable by insertion of the key, whereby upon insertion of said key the barrel may be rotated and then shifted endwise to effect disengagement of the combination disks from the knob and permit re-engagement of said parts in changed relation.

5. In combination, a lock including a knob, a dial and an index, one of which is xed and the other rotatable with the knob, a keyoperated tumbler barrel, combination mechanism operable by the knob, and means associated with said barrel for effecting the operative connection between the knob and said mechanism and disengageable from the knob upon endwise movement of the barrel, and fixed means shaped to normally prevent endwise movement of the barrel but formed to inter-member with a part thereof when the barrel has been rotated to unlocked position, thus permitting the endwise movement required to disengage the connection between the knob and the combination mechan1SII1.

6. In a combination lock, a rotatably mounted knob, a dial and an index, one of which is fixed and the other rotatable with the knob, combination tumblers and driving means normally positioned to transmit rotation thereto from the knob; and key-controlled means operable independently of the combination mechanism for disengaging the driving means from the knob, the connection between the knob and the tumblers comprising features re-engageable at a different angular relation of the knob to the other parts for altering the combination of the lock.

DlIlLW YN M. BELL.`

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