US2079702A

US2079702A - Lock mechanism

Info

Publication number: US2079702A
Application number: US725754A
Authority: US
Inventors: William F Diesel
Original assignee: Sargent and Greenleaf Inc
Current assignee: Sargent and Greenleaf Inc
Priority date: 1934-05-15
Filing date: 1934-05-15
Publication date: 1937-05-11
Anticipated expiration: 1954-05-11

Description

May 11, 1937. w. F. DIESEL 2,079,702

LOCK MECHANISM Filed May 15, 1954 4 Sheets-Sheet l INVENZ'OR B WiZZzmZDmseL May 11, 1937. w' D|ESEL 2,079,702

LOCK MECHANISM Filed May 15, 1934 4 Sheets-Sheet 2 ig. 5 4! 41 A 10 INVENTQR B3, @ATTORNEY May 11, 1937. w. F. DIESEL 2,079,702

.LOCK MECHANISM Filed May 15, 1934 4 Sheets-Sheet 5 I INVENIOR WLZZZLUn/HZGSGL 30 47:54 TTORN Y May 11, 1937.

w. F. DIESEL LOCK MECHANISM Filed May l5, 1954 4 Sheets-Sheet '4 ATTORN Y d g M W Patented May 11, 1937 UNITED STATES LOCK MECHANISM William F. Diesel, Rochester, N. Y., assignor to Sargent & Greenleaf, Inc., Rochester, N. Y., a corporation of New York Application May 15, 1934, Serial No. 725,754

17 Claims.

7 The present invention relates to lock mechanism and has for one object to provide an improved combination lock mechanism for controlling the operationsof other mechanisms such, for example, as timing mechanisms, electrically operated or controlled systems or devices, and other useful parts or mechanisms which it may be desired to protect or control by the use of a combination lock mechanism of the class described herein.

A further object of the invention is to provide an improved combination or permutation lock mechanism which can be set up or operated according to different predetermined combinations or arrangements of operating parts whereby one of such operations may be made necessary to effect control, release or operation of one device and another required to control the operation or functioning of a different or like device in which the operation ofone of said devices may or may not be dependent upon successful operation of another.

A further object of the invention is to provide an improved permutation lock, in combination with securing or locking means, and a timing device, in which arrangement the lock is set or operated to correspond to a selected combinationor predetermined arrangement of tumblers to effect release of the timing device and is prevented from being successfully operated to effect release of the securing means until the timing device has operated for a predetermined period, after which the securing means will be rendered releasable by setting or operating the lock in accordance with another combination, or in accordance with any preferred or concerted order of the movable parts of the permutation lock.

A further object of the invention is to provide an improved combination lock adapted to be operated according to a predetermined combination or setting of one or more of the tumblers to effect release or control over an operating part and being subsequently operable upon destroying said combination, in accordance with a different setting of the tumblers to release, operate, or control another part or parts for performing a useful function.

A further object of the invention is to provide 0 an improved combination lock for controlling or A further object of the invention is to provide an improved time lock for protecting safes, vaults, containers, and the like, which is particularly adapted for preventing daylight holdups, not only by making it necessary to operate a combination lock to effect release of the timing mechanism, and to wait for the timing mechanism to run down, but also requiring the operation of a different combination after the timing mechanism has completed its period of operation in order to effect release of the bolt-work or other means for protecting the safe.

A further object of the invention is to provide an improved time and combination lock mechanism, requiring one operation of the combination lock to effect release of the timing mechanism and a subsequent operation of the lock to release the bolt-work or the protecting means therefor after operation of the timing mechanism for a selected period, along with means controlled by the timing mechanism for preventing relocking of the safe without first rewinding or resetting the timing mechanism for a subsequent operation.

A further object of the invention is to provide in combination with securing mechanism for a closure or the like, a combination lock mechanism for protecting the same and a timing device adapted to be held in check by said lock mechanism and arranged to be released for operationupon setting the combination lock mechanism to correspond to a selected combination, and to subsequently condition said mechanisms for cooperation to render the securing mechanism releasable by again setting thecombination lock mechanism to correspond to a different combination. 30

A further object of the invention is to provide an improved combination lock having a series of tumblers and devices associated therewith and adapted for controlling or holding in check means for controlling the operations of locks and various 40 mechanisms or systems, and in which arrangement one or more of thetumblers may be set according to one combination to release or con dition one or more of said devices for the purposes intended and subsequent to which certain-of the tumblers can be :set according to another combination .to further release or condition the same or other devices to control other means or mechanisms, or systems of different kinds.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully decribed, the novel features being pointed out in the claims at the end of the specification.

Cal

In the drawings:

Fig. 1 is a plan view of a locking device embodying the invention;

Fig. 2 is a horizontal section taken substantially on the line 22 of Fig. 9;

Fig. 3 is a sectional elevation of the lock taken on line 33 of Fig. 1 showing the locking parts in normal looking position;

Fig. 4 is a similar View with certain of the parts slightly shifted to free the timing mechanism for operation upon successful operation of the first combination;

Fig. 5 is a fragmentary sectional elevation showing the bolt dogging element just after release by the timing mechanism and before release by operation of the second combination;

Fig. 6 is a similar view showing the position assumed by the dogging element after successful operation of the second combination;

Fig. '7 is a fragmentary sectional elevation showing parts of the combination lock in normal locking position and an electric circuit closing device shown held in open position by one of said parts;

Fig. 8 is a similar view showing one of the locking parts released and the circuit controlling device at closed position;

Fig. 9 is a sectional elevation taken substantially on line 99 of Fig. 1 showing the parts of the timing mechanism in the position they occupy when held against release by the combination look when the operating parts of the latter are in the position shown in Fig. 3;

Fig. 10 is a fragmentary sectional elevation somewhat similar to Fig. 9, showing parts of the timing mechanism when the latter is in run down condition and the bolt dogging or control elementat full release position in which it is held by the guards controlled by the timing mechanism which requires the latter to be reset for operation in order to free the bolt dogging element for return to the normal dogging position 'shown in Fig. 3;

Fig. 11 is a fragmentary sectional elevation of a modified form of tumbler arrangement, in

'which all of the tumblers are of the same size,

forms, an improved combination or permutation lock, capable of different operations corresponding to different combinations or tumbler settings, in order'that different parts may be released or conditioned for operation one in advance of another or at different times without having to employ two or more individual sets of tumblers for accomplishing the desired results.

One example of the usefulnessof the present combination lock mechanism is the employment of the same to control one or more timing devices and locking mechanism under the control thereof. In other words, by the operation of certain of the tumblers of a single set, the timing device is released for operation, and upon a subsequent operation of the complete set of tumblers after the timing device has completed its period of operation, release of the means employed to guard or protect the bolt or other looking means will be effected.

In the lock mechanism shown in Figs. 3 to 6, inclusive, the timing mechanism is adapted to be released by setting the operating disk or driving tumbler and one other tumbler, by movement of the dial in opposite directions to certain positions corresponding to the numbers or characters of a predetermined combination, at which time the dogging element will drop slightly and the switch shown in Fig. 7 will be automatically operated to close the circuit controlled thereby. Subsequently, when the timing mechanism has operated to free the dogging element, the latter can be moved to shift the bolt after operating the dial to set up another combination corresponding to a different arrangement of the tumblers, in which in the present design, the notches of all of the tumblers are brought into alinement to permit the fence means on the dogging element to move to full release position. Then by turning the dial the bolt operating or dogging element can be moved to the full release position shown by the dot and dash lines in Fig. 10. In

moving the bolt operating member to this position the bell-crank levers will automatically assume the position shown in Fig. 10, at which they will hold the bolt operating member to prevent movement thereof and the bolt connected therewith to locking position. However upon resetting the timing devices, the dogging element and the bolt will be released for return to normal locking position shown in Fig. 3 by rotation of the dial.

Referring to the drawings, It) represents a portion of a safe, vault, or the like, and l l a door or closure therefor, on the inner face of which is secured by any suitable means a frame or casing 12 as best shown in Fig. 2. A bolt 13 is carried by the casing and when in locking position projects into a keeper 14 secured to the wall of the safe I8 as shown in Figs. 1 and 3. The bolt is guided in the end Wall of the casing and also by an offset portion l5 resting on the bottom of the casing as shown in Fig. 4.

The lock is of the combination type and includes the usual knob and dial plate It and H respectively, located on the outside of the closure for operating the spindle 18 carrying a plurality of tumblers I9 and I90, and an operating tumbler or disk 20 having a lug 2| for engaging the end of an arm 22 on the bolt for moving the latter from unlocking to locking position, the tumbler 59a being made larger than the tumblers l3 for a purpose described hereinafter. The disk is provided with a cam surface 23 for raising the bolt dogging and operating element 24 which is pivoted at 25 upon the bolt. The bolt is retracted by engagement of the lug 2| on the disk with a shoulder 26 on the dogging element 24 when rotating the disk in a counterclockwise direction from the position shown in Fig. 4, after the dogging element has moved to the full release position shown in Fig. 6. The dogging element carries a laterally projecting part 27 comprising fence means overlying the peripheral portions of the tumblers, the dogging element being supported by the shoulder 26 in position to be held in check by a lug 24a on the casing l2 after the combination has been destroy- M ed, the part 2'! dropping into the notch 28a of the tumbler l9a upon successful operation of the combination for controlling the timing mechanism and into the notches 28 of the tumblers l9 and also the notch 28a upon successful operation of the combination for controlling the dogging element 24a, as more fully described hereinafter.

The casing [2 has a cover plate section 23 removably secured thereon which carries the time mechanism, comprising the usual spring motor including a drum 3!). The motor has a shaft 3! operating to drive the main gear 32 of the time mechanism which in turn operates a train of gears, not shown, constituting the usual or any well known type of clock mechanism, in which is included a suitable escapement wheel 33 and a. pallet 34 for controlling the same.

The time mechanisms are shown in duplicate and the corresponding parts are, therefore, given the same reference characters, it being understood that the two mechanisms operate independently of each other and that if one should, for any reason, fail to function, the other will serve to control the operations of the bolt or the dogging means therefor.

The escapement wheels 33 are each mounted on an arbor 35, the ends of the arbors being journaled in the front and

rear frame plates

36 and 37 respectively, between and by which the time mechanism is supported as shown in Fig. 2. The arbors are each provided with a pinion 38 or its equivalent for receiving the free ends of the upper and

lower U-shaped members

39 and 40 suitably secured upon a vertically disposed slide 4I. The slide is guided at its upper end by a U-shaped bracket 42 and also by the upper and lower pins 43 extending within the slots 44 of the slide.

The Ushaped member 40 of the slide, through engagement of its free end portions with the pinions 38 on the arbors 35, serves to hold the time mechanism in check when wound for operation provided, of course, that the slide has been moved to its highest position in which the U-shaped member 49 will engage the pinions 38. Movement of the slide to this position is effected by moving the bolt dogging element 24 to the position shown in Fig. 3, by turning the dial of the combination lock to destroy the combination. In this operation the dogging element is raised by the cam 23 of the disk 20 and while being raised lifts the slide through engagement with the laterally projecting portion Ma thereof.

To effect release of the time mechanism for operation, the combination for controlling the same must be successfully operated, as by rotation of the dial to bring the notch 28a of the large tumbler 19a and that of the tumbler disk 20 into registry with the projection 26 of the dogging element whereby to permit of a slight downward movement of the latter to the position shown in Fig. 4 in order that the spring 45 may positively move the slide downwardly to the release position shown in Fig. 9, at which the escapement wheels of the time mechanism are freed for operation.

The slide and dogging element are held in this position, during operation of the time mechanism, by a movable support 46 pivoted at 47 on the frame or cover plate 33 of the time mechanism, through engagement of the support with a lug 48 on the dogging element whereby the latter is prevented from dropping to its lowest or non-dogging position in which it is shown in Fig. 6 and at which it is no longer guarded by the obstruction or lug 24w on the casing l2 of the lock.

Movement of the support 46 from holding position with respect to the dogging element is effected by the time mechanism at the expiration the time mechanism approaches the rundown position the support is moved from beneath the lug 48 on the dogging element at which time there is a slight drop of the latter from the position shown in Fig. 4, the extent of which is limited by the contacting of the fence 2? with the tumblers l9. In this position of the dogging member 24 the notch 28a. of the tumbler Na and that of the tumbler disk 23 remain in alined relation to afford clearance for the fence and the part 26 of the dogging member which is necessary as seen from the position of the parts in Fig. 5. The parts remain in this position until the dial is turned to operate the second combination at which time the cam 23 of the disk 20 will raise the dog 24 to move the fence 2'! out of the notch of the large tumbler [3a, thus conditioning the lock for operation of the second combination. This is done by turning the dial to bring the notches of all of the tumblers into alinement to permit the fence 21 to enter the same to allow the dogging member to drop to the bolt releasing position shown in Fig. 6, thus permitting the slide M for releasing the time mechanism to be moved to its lowest position by the spring 45. shown in Fig. 10, the free ends of the U-shaped member 33 will engage the pinions 38 on the arbors 35 carrying the escapement wheels to prevent continued operation of the timing mecha nism.

The release bar 50 is preferably extended through and is supported and guided by the spaced portions of the U-shaped bracket 42 for guiding the slide 41. The release bar is held in the full release position shown in Fig. 10 by the pins 43 of the motor driven gears 32 until the springs of the motors are rewound at which time a coiled spring will operate to return the release bar to the normal position shown in Fig. 9.

the spring having one end connected with the re l lease bar and the other with the bracket 42.

The return of the release bar by the spring to the normal operating position effects movement of the support 43 to normal position at which it will lie beneath the lug 48 on the dogging element to hold the latter in theposition shown in Fig. 9, to which it is moved following successful operation of the combination for controlling the tim ing device.

As previously stated the return of the dogging element and the bolt connected therewith is effected when relocking the safe by turning the dial and spindle to destroy the second combination which is operated to aline the notches of all of the tumblers after the timing device has completed its operation.

The means provided for preventing relocking of the safe in case the attendant should forget to rewind the time device is preferably designed to cooperate with the dogging element to hold it against return to normal dogging position, but if desired may be made to operate in direct connection with some other part of the bolt control means to prevent movement of the bolt to locking position.

In the present design means is provided is:

In this position of the slide as making it necessary to at least effect a partial rewinding of each of the clock or time devices shown before the bolt can be moved from unlocking to locking position. The means for protecting or holding the dogging element against return to normal dogging position with respect to the bolt comprises a guard in the form of a bell-crank lever 56 pivoted at 5'? upon the front frame plate 36 of the time mechanism, the lever being moved from protecting position with respect to the bolt dogging element by the rewinding of the timing device shown at the left of Fig. 9 of the drawings. In Fig. 10 it will be noted that the dogging element has been moved to full release position by rotating the operating disk 26 of the combination lock counterclockwise from the position shown in Fig. 6. In the position of the dogging element shown in Fig. 10, a lug or abutment 58 projecting from the dogging element lies directly in front of the end portion 59 of the guard lever 56 so that should an attempt be made to rotate the dial and spindle for the purpose of recasting the bolt, the abutment 58 will engage the end portion of the lever and prevent operation of the dial to an extent sufiicient to cause the lug 2| of the driving disk 20, through engagement with the arm 22 of the bolt, to move the bolt to locking position.

However if the timing device is rewound in advance of an attempt to recast the bolt, means controlled by the timing device will be operated to move the lever 56 from the bolt protecting position shown in Fig. 10 to the release position shown by dot and dash lines in Fig. 9. This means preferably comprises a cam 66 or its equivalent connected with the winding shaft 3| of the spring motor, or if preferred with the driving gear 32, which is rotated by the shaft when rewinding the timing device. The cam may be constructed in any preferred manner suitable for accomplishing the purpose desired, but preferably comprises a circular-shaped member having a depression or opening 6| in its wall for receiving the inner end of a lever 62 pivoted at 63 upon the plate 36 opposite the guard or bell-crank lever 56. The lever 62 has a stud or projection 64 thereon which extends into operative engagement with the outer end of the guard lever for moving the latter to release position upon rewinding or resetting the timing device shown at the left of Figs. 3 and 9. The lever 62 is held in engagement with the cam 66 by means of a spring 65 secured upon a bolt 66 or other suitable means for detachably connecting the front and rear frame plates 36 and 3'! for supporting the timing devices.

During the operating period of the timing device the guard lever 56 is moved by the lever 62 from the non-protecting position shown in Fig. 9 to the position shown in Fig. 10, the lever 62 being operated by the edge portion 6lb of the cam 66, and the guard lever being held in the position shown in Fig. 10 by a spring 61 suitably secured upon the front plate 36 of the timing device.

The position of the cam 66 when the timing device has been allowed to run down for the purpose of releasing the bolt is clearly shown in Fig. 10 in which position the lever 62 has moved out of the opening 6| of the cam and rests upon the peripheral portion of the latter to hold the guard lever in position to prevent recasting of the bolt since the inner end portion 56 of the lever lies in the path of the lug 58 on the dogging element.

In the position of the parts shown in Fig. 10, if the driving shaft 3| of the timing device is rotated in a clockwise direction, the inner end of the lever 62 will move into the recess 6| of the cam and upon continued winding of the timing device the portion am of the cam will engage and move the lever from the position shown in Fig. 10 to that shown in Fig. 9.

It will be understood that the position of the operating portion 6la of the cam with respect to the inner end of the lever 62 when the timing device is run down or at bolt releasing position, as shown in Fig. 10, determines the minimum period for which the timing device must be reset for operation before the cam will act on the lever to cause it to move the guard 56 to the position at which it will release the dogging element for return to dogging position, or in other words to the position at which the guard is shown in Fig. 9. This period in the present case is fifteen minutes but may be increased or decreased if desired by varying the position of the operating portion of the cam with respect to the lever 62 when the timing device is in full release or run down position.

The guard means shown at the right of Figs. 9 and 10 for preventing return of the dogging means to bolt dogging position is substantially the same as that described above and therefore the corresponding parts have been given the same reference characters. It should be pointed out, however, that the position of the guard operating lever 62 at the right of Figs. 9 and 10 has been reversed but its function and manner of operation, under control of the cam, is the same as in the case of the corresponding left hand lever. However the right hand guard lever 56a which is pivoted upon the plate 36 at 51a carries a laterally projecting pin 68 which extends through a slot 66 in the plate 36 into posi tion to be engaged by the lever 62 and said lever when operated by the portion 6la of the cam 66 will swing the guard lever from the operating position shown in Fig. 10 to release position with respect to the bolt dogging element as shown in Fig. 9.

It will be noted, however, that when the dogging element 24 is in the bolt releasing position shown in Fig. 10 that the lug 48 thereon lies at the rear of the inner end portion 59a of the right hand guard lever while the lug 58 lies in front of the end portion 59 of the left hand guard lever 56. With this arrangement, either of the guard levers will prevent recasting of the bolt if the other has been moved torelease position by rewinding the timing device corresponding thereto. It will be seen, therefore, that the dogging element can not be operated to return the bolt to locking position until each timing device has been rewound or set for operation.

When the safe is locked the timing devices are held in check by the means provided for that purpose and the cams, and guard levers controlled by the cams, will occupy the positions shown in Fig. 9, in which the guard levers are at release position with respect to the dogging element. If, however, the first combination is successfully operated, the dogging element will drop from the position shown in Fig. 3 to that shown in Fig. 4 at which the U-shaped member 46 of the slide 4! will release the timing devices for operation, and when they have completed their operation the cam portions 6lb will have operated upon the levers 62 to shift them whereby to permit the springs 61 to return the guard levers to the position shown in Fig. 10 in which they are held by said springs against suitable stops 16 on the plate 36. However at this time the dog-ging lever will have dropped to the position shown in Fig. 6 in which it has not been shifted the position shown in Fig. 10 to move the bolt to release or unlocking position. During this movement of the dogging element the

lugs

58 and 48 thereon will engage the cam portions it and Na of the guard levers 56 and 56a, respectively, whereby to swing" the levers upwardly to permit the lugs to pass thereunder, after" which the levers will be returned by the spring 81 to the position shown in 10.

In this manner the operation of opening the safe is completed, the parts remaining the position shown in Fig. 10 until it is again desired to move the bolt to locking position. This oper'ation asstated above first requires the rewinding of each timing device to shift the guards for the dogging element to the position shown in 9', after which the dial knob can be turned. to destroy the combination and to shift the bolt to locking position. I

The main driving shafts 3| of the timing devices, which are driven by the spring motors, are provided with operating knobs 72' for rewinding the motors and each of the shafts car ries a laterally extending member 13 adapted to engage a pin 14 which is threaded to take into any one of a series of holes in the rear wall of the casing 29, not shown. The holes are preferably spaced at distances corresponding to five minute periods of operation of the timing devices and by shifting the pin to one or another of the holes the intervals of operation may be increased or decreased as desired. When the timing devices arein run down or release position, the arm 13 on the winding shaft 3! will engage a stop 16 suitably secured upon the rear wall of the casing 29.

As previously stated the operating cams 68 are so constructed as to make it necessary for each of the timing devices to be wound for a period of at least fifteen minutes in order to shift the guards 56 and 56a to full release position with respect to the dogging element 24, or in other words, to the position shown in Fig. 9 in which the arm 13 has been moved from the zero point into engagement with the pin 14 located at a position corresponding to the fifteen minute period. By shifting the pins to any of the other positions the period of operation of the timing devices can be increased and by omitting the pins the timing devices can be set to operate for any desired period before releasing the bolt dogging element.

The lock and time mechanism casings l2 and 29 are detachably connected one with another by means of the screws 11. The tumblers and other parts of the lock proper are assembled in the casing I2 and can be applied as a unit to the safe door. The several parts of the two timing devices are first assembled in the casing 29, after which said casing is applied as a unit to the casing l2, from which it can be quickly removed without disturbing the parts of the lock proper upon removal of the screws 11.

In the modification shown in Figs. 11 and 12 the casing for the lock mechanism is shown at l8, the driving disk at I9, and the spindle at 80. The tumblers, other than the driving disk, are all of the same diameter, said tumblers being indicated at 8| and the notches therein at 82. The combined dogging and bolt operating element is shown at 83 and is pivoted at 84 to the operating arm 85 of the bolt, the latter corresponding to the bolt shown in Fig. 3. The dogging element is provided with

lugs

86 and 81 for cooperation with the bell-crank levers 56 and 5611, respectively, to prevent movement of the bolt to locking position before rewinding the timing devices. The dogging element 83 is held in the bolt dogging position shown in Fig. 1 1 through cooperationof the lug 86 with the part 88 of the timing mechanism corresponding to the part 46 shown in Fig. 4. The cam 89 and abutnients 90 on the operating disk 19 correspond to and function in the same manner as the cam 23 and abutment 2| of the disk 28, shown in Figs. 3 to 6, inelusive.

The fence on the dogging element 83 is of the stepped type or, in other Words, has a relatively deep portion 9| and a reduced portion 82..- as best shown in Fig. 12, the portion 9| taking into the notch 82. of the tumbler 8i nearest the operating disk 19 when the-combination for controlling the release of the timing mechanism is successfully operated. Subsequently the portion 92 will drop into engagement with the other two tumblers when the part 88 of the timing mechanism is moved from beneath the lug 86 of the dogging element, thus making it necessary to set up the second combination to aline the notches of all of the tumblers whereby to permit the dogging element to move to a position corresponding to that shown in Fig. 6, from which it can be moved to withdraw the bolt by the operating disk upon turning the dial and spindle connected therewith.

It will be understood that the dogging element shown in Fig. 11 will, when the safe is locked, normally occupy the position of the dogging element shown in Fig. 3, in which position. it will be protected by the lug 93 on the lock casing, and that in said position, it will hold the timing mechanism in check through engagement with, the part 94 thereof corresponding tothe part Ma shown in Fig. 1. The modification shown in Figs. 11 and 12 therefore, like the arrangement shown in Figs. 3 to 6, embodies lock mechanism by which one combination can be operated to release a timing mechanism for operation, which after operating for a predetermined period will free a bolt dogging element for control by av second or different combination for movement to efiect operation or release of a bolt or other locking means.

Inthe switch arrangement shown in Figs. '7 and 8, for controlling an electric circuit, the parts of the locking mechanism disclosed have been given the same reference characters as the corresponding parts of the lock mechanism shown in Figs. 3 to 6, inclusive, since the construction and operation of these parts is the same in both cases.

It will be understood that the switch shown in Figs. 7 and 8 may be employed for opening and closing electric circuits for controlling various types of electrically operated devices or systerns and that the lamp circuit indicated constitutes merely one example of the usefulness of a combination lock controlled switch of the type shown. In the present arrangement the lamp shown at 95 may be employed as a signal for indicating to one or more persons responsible for the contents of a safe or bank vault, who may be stationed at points remote therefrom, that the combination for controlling the release of the timing mechanism has been operated either during or between banking hours, or at times other than such as may be determined upon in advance for operation of the combination by persons entrusted with the same.

With the present arrangement the Warning afforded by lighting the lamp would, of course, be in advance of the termination of the period of operation of the timing mechanism, thus affording time for those in control to take steps to prevent opening of the safe or vault by an unauthorized person attempting to gain access to the contents thereof, such protection being particularly advantageous where the bolt work is automatically released upon completion of the operation of the timing mechanism for protecting the same.

The lamp 95 or other type of signaling device is connected with the switch described hereinafter by the

wires

96 and 97, which in turn are connected with a suitable source of electrical energy, such, for example, as the battery shown at 98, Figs. 7 and 8. The switch mechanism comprises a casing 99 having a removable closure I 00, the casing being suitably connected with the lock casing I2 and having a bearing l0I forming a guide for a slidably mounted plunger-like member I02 which engages the upper face of the dogging element 24 when the latter is in the normal bolt protecting position shown in Fig. '7. A member I03 formed of insulating material is threadedly connected with the upper end of the member I02 and has thereon a laterally extending arm or contact member I I 04. The member I02 is held in engagement with terial and suitably connected with the closure I00 on the casing 99, as shown in Fig. 7. The plug I06 is provided with a screw I08 for connecting the circuit wire 96 therewith. For cooperation with the movable contact member I04,

7 as shown in Fig. 8, is a fixed cont-act I09 secured within the casing 99 upon a part IIO, formed of insulating material, by means of a screw III.

Carried by the dogging element 24 is a bracket II2 formed of insulating material and upon 1 which is mounted a metal plate I I3 for receiving a pair of movable contacts I I4 and I I5, sleeved on the fixed stud-like members II 6 and Ill, respectively, each of which is carried by a holder IIB extending within a part H9 formed of insulating material and threadedly connected with a plate I20 extending laterally from the casing 99 and overlying an opening I2I in the wall of the casing I2 containing different parts of the combination lock as shown in Figs. 7 and 8. The movable contact members H4 and H5 are normally held in engagement with the metal plate I I3 by means of the coiled springs I22 surrounding the stud-like members I I6 and I I1, said movable contact members being limited in their up and down movement by means of the pins I23 projecting from the stud-like members within the slots I24 of said contact members. The studlike member I I6 is provided with a part I24 from which extends a connection I25 leading to the screw III for securing the contact I09 upon the insulating member H0. The fixed contact member I ll carries a part I26 with which is connected the circuit wire 9'! leading to the battery 98.

When the dogging element 24 is in the normal bolt protecting position shown in Figs. 3 and 7,

it will hold the plunger-like member I 02 in elevated position to prevent engagement of the contacts I94 and I09 whereby the lamp circuit will be held open. However upon successfully operating the combination for controlling the timing mechanism, the dogging element will drop to the position shown in Fig. 4 in which it will be held by the part 46 of the timing mechanism. When the dogging element reaches the position shown in Fig. 4, the lamp circuit will be closed as indicated in Fig. 8, through engagement of the contact members I04 and I09, the former being moved into engagement with the latter by the spring I 05. Consequently as long as the dogging element remains in the position shown in Fig. 4 the lamp circuit will remain closed. As soon, however, as the part 46 is moved by the timing mechanism from beneath the lug 48 on the dogging element, the latter will drop slightly at which time the fence 2'! will contact with the peripheral portions of the tumblers I9, in which position of the parts the lamp circuit will also remain closed. As soon however as the second combination is successfully operated the dogging element will drop to the position shown in Fig. 8, at which time the circuit will be opened by movement of the plate II3 out of engagement with the spring pressed contacts H4 and H5, after which the dogging element can be moved by the operating disk 20 to withdraw the bolt.

Subsequently upon locking the safe and de stroying the combination, the circuit will be momentarily closed when the plate II3 again contacts with the parts H4 and H5, which occurs before the dogging element has been raised sufficiently to move the contact I04 out of engagement with the contact I09. As soon however as the dogging element reaches the normal elevated position shown in Figs. 3 and 7, the circuit will be broken by the separation of the contacts I04 and I 05. Upon thus momentarily closing the circuit the flashing of the lamp will afford a signal indicating that the safe has been locked.

It will be understood that in the present disclosure the operation of one of the combinations of the permutation lock will serve to release the timing mechanism and that the bolt protecting or securing means will be released upon the successful operation of the other combination. It will also be understood that a lock of this type may be employed to control and successfully operate or release difierent parts or devices other than those shown and described herein.

In the unlocking operations of the safe the dial is turned to different predetermined positions to set up one combination, with the result that the fence means is permitted to drop into the notch of at least one tumbler when the operating disk is in a predetermined relation relative thereto whereby to allow the dogging element to drop suificiently to release the timing mechanism for operation, the dogging element being arrested through engagement of the lug 48 thereon with the part 46 controlled by the timing mechanism. After the timing mechanism has operated for a predetermined period it will move the part 40 from beneath the lug 48, allowing the dogging element to move downwardly until arrested by the contacting of the fence 2'! with the peripheral portions of certain of the tumblers. The second combination will then be operated in the usual way, although the turning of the dial to set up the second combination will destroy the first combination. However, in the setting up of the second combination, the notches of all of the tumblers must be alined and the operating disk brought into proper relation with respect thereto, after which the dogging element will drop to its lowest position and upon then turning the dial in the proper direction, the bolt will be withdrawn to permit the safe door to be opened.

Before the safe can again be locked the timing devices must be rew'ound to shift the guards for the dogging element to the position shown in Fig. 9, after which the dial knob can be turned to destroy the combination and to shift the bolt to locking position,

I claim 1. In lock mechanism, a combination lock including a set of tumblers one of which comprises an operating tumbler, one or more of the tumblers being of greater diameter than the remaining tumblers, said set of tumblers corresponding to and operable according to one combination, the operating tumbler and the tumblers of increased diameter corresponding to and operable according to a different combination, a bolt dogging element associated with the operating tumbler for operation thereby when in a predetermined position relative thereto, and fence means associated with said dogging element adapted to prevent its movement to said position upon destroying either of said combinations, said fence means upon the successful operation of either ging element associated with the operating tumblers corresponding thereto whereby to release the dogging element for movement to a predetermined position relative to the operating tumbler from one of which positions the dogging element is adapted to be moved by rotation of the operating tumbler. I

2. In lock mechanism, a combination lock including tumblers and fence means, operating means for the tumblers, and means whereby some of said tumblers when set according to one combination will release the fence means for movement to one position and whereby upon operating a greater number of said tumblers to set up a different combination the fence means will be released for movement to another position.

3. In lock mechanism, a combination lock including tumblers and fence means, operating means for the tumblers, a lock protecting device normally held at protecting position by said fence means, and means whereby some of said tumblers when set according to one combination will release the fence means for movement to one position and whereby upon operating a greater number of said tumblers to set up a different combination the fence means will be released for movement to another position to release said lock protecting device for movement to non-protecting position.

4. In lock mechanism, a combination lock including tumblers and fence means, operating mean for the tumblers, a bolt, a dogging element for the bolt connected with the fence means and normally held at a predetermined position by the fence means, means for obstructing the dogging element when at said position, and means whereby some of said tumblers when set according to one combination will release the fence means for movement to one position and whereby upon operating a greater number of said tumblers to: set up a different combination the fence means will be released for movement to a different position to release the dogging element for movement to a position at which to clear said obstructing means.

5. In lock mechanism, a combination lock including tumblers and fence means, means for operating the tumblers, timing mechanism, means normally cooperating with the fence means to hold the timing mechanism in check, and means whereby some of said tumblers when set according to one combination will release the fence means for movement to one position to effect release of' the means for holding the timing mechanism in check and whereby upon operating a greater number of said tumblers to set up a different combination after the timing mechanism has run down the fence means will be released for movement to another position.

6. In lock mechanism, a combination lock including a set of tumblers, a movable lock protecting device adapted when in a predetermined position to be moved to release position by one of said tumblers, fence means associated with said tumblers for normally holding said device at protecting position, means whereby some of said tumblers when set according to one combination will release said fence means for movement to one position, said set of tumblers being subsequently operable to set up a different combination to release said fence means for movement to a different position whereby to free the lock protecting device for movement to said predetermined position.

'7. In lock mechanism, a combination lock including a set of tumblers, one of which comprises a fence supporting tumbler of larger diameter than the remaining tumblers, means for operating said tumblers, a fence element normally resting on said supporting tumbler, means whereby some of said tumblers including said supporting tumbler when set according to one combination will release said fence element for movement to one position, said set of tumblers being then operable to set up a different combination to release said fence element for movement to another position.

8. In lock mechanism, a combination lock including a set of tumblers, one of which comprises a fence supporting tumbler of larger diameter than the remaining tumblers, means for operating said tumblers, locking means, a protecting device for said locking means, fence means normally resting on said supporting tumbler and holding said device at a predetermined position, means whereby some of said tumblers including said supporting tumbler when set according to one combination will release said fence means for movement to 'one position, said set of tumblers being then operable according to another combination to release the fence means for movement to a different position whereby to release said lock protecting device 9. In lock mechanism, timing mechanism for controlling a locking device, a set of tumblers, one of said tumblers being of greater diameter than the remaining tumblers, movably mounted fence means normally resting on the tumbler of increased diameter and operating to hold the timing mechanism in check, means whereby some of said tumblers including the last mentioned tumblers when set according to one combination will effect release of said fence means for movement to a predetermined position whereby to free the timing mechanism for operation, said set of tumblers being subsequently operable to set up another combination to release the fence means for movement to another position after operation of the timing mechanism for a predetermined period.

10. In lock mechanism, a combination lock including a set of tumblers, a movably mounted fence element having relatively offset portions overlying said tumblers, one of said portions normally resting on one of said tumblers and the other portion being spaced from the remaining tumblers, some of said tumblers including the one on which said fence element rests, being operable to set up a combination to release said fence element for movement to one position, said set of tumblers being then operable to set up another 10 combination to free the fence element for movement to another position at which the other portion of the fence element will lie within the notches of the remaining tumblers.

11. In lock mechanism, timing mechanism, a

combination lock including a set of tumblers, a movably mounted fence element adapted in one position to hold the timing mechanism in check, said fence element having relatively offset portions, one normally engaging one of said tumblers to hold the fence element at said position, some of the tumblers including the last mentioned tumbler being operable to set up a combination to release said fence element for movement to one position to free the timing mechanism for operation, said set of tumblers subsequent to operation of the timing mechanism for a predetermined period being operable to set up another combination to release the fence element for movement to another position at which the other portion of the fence element will lie within the notches of said remaining tumblers.

12. In lock mechanism, a combination lock including a set of tumblers, operating means for the tumblers, a fence element normally resting on one of said tumblers and in spaced relation to the remaining tumblers, some of said tumblers including means whereby upon setting up one combination said fence element will be released by the tumbler upon which it rests for move- 40 ment to a predetermined position, said set of tumblers being then operable to set up another combination to release said fence element for movement into the notches of all of the tumblers. 13.121 lock mechanism, a combination lock including a set of tumblers, operating means for said tumblers, a lock dogging device having a fence element thereon normally cooperating with some of said tumblers to hold said device at a predetermined position, one of said tiunblers including means whereby upon setting up one combination said fence element will be released for movement to a predetermined position exteriorly of the notches of the remaining tumblers, said set of tumblers being then operable to set up another combination to release said fence element for movement into the notches of all of the tumblers.

14. In lock mechanism, a combination lock including a set of tumblers and fence means, means for operating the tumblers, timing mechanism normally held in check by the fence means, means whereby some of said tumblers when set according to one combination will release the fence means for movement to one position to release the timing mechanism for operation, a device for supporting the fence means in said position, and means operated by the timing mechanism when the latter is approaching run-down position for moving said device from supporting relation relative to the fence means, said set of tumblers being then operable to set up a different combination.

15. In lock mechanism, a combination lock including a set of tumblers and fence means, means for operating the tumblers, timing mechanism, a movable lock protecting member normally held at protecting position by the fence means, said member serving to hold the timing mechanism in check, means whereby some of said tumblers when set according to one combination will release the fence means to free said member for movement to a position at which to release the timing mechanism, a device for arresting and supporting said member at said position, and means operated by the timing mechanism when the latter is approaching run-down position to shift said device from supporting relation relative to said member, said set of tumblers being then operable to set up a different combination to release the fence means whereby to free said member for movement to non-protecting position.

16. In lock mechanism, a combination lock including a set of tumblers and fence means, means for operating the tumblers, timing mechanism, a bolt, a dogging element for the bolt normally held at inoperative position by the fence means and serving when in said position to hold the timing mechanism in check, means whereby some of said tumblers when set according to one combination will release the fence means to free the dogging element for movement to a position at which to release the timing mechanism, a device for holding the dogging element at said position, and means operated by the timing mechanism when the latter is approaching a run-down position for moving said device from supporting relation relative to the dogging element, said set of tumblers being then operable to set up a different combination to release the fence means for movement to a different position whereby to free the dogging element for movement to non-dogging position.

17. In lock mechanism, a combination lock including a set of tumblers, one of which comprises an operating tumbler, a bolt dogging element adapted in a predetermined position to be moved by said operating tumbler to release the bolt, fence means associated with the tumblers and normally holding the dogging element at inoperative position, means whereby some of said tumblers when set according to one combination will release the fence means to free the dogging element for movement to one position, a device for supporting the dogging element in the last mentioned position, and means operated by the timing mechanism when the latter is approaching a run-down position for moving said device from supporting relation relative to the dogging element, said set of tumblers being then operable to set up a different combination to release the fence means for movement to a different position whereby to free the dogging element for movement to said predetermined position.

WILLIAM F. DIESEL.