US1054769A - Combination-lock. - Google Patents

Description

J. H. HOBSON.

COMBINATION LOCK.

APPLIUATIQN FILED SEPT. 25, 1911v LG5QQZ 69. Patented Mar. 4, 1.913,

2 SHEETSSHEET 1.

I J. H. HOBSON;

COMBINATION LOOK. I APPLICATION FILED SEPT. 25, 1011.

11,054,769. Patented Mar.4, 1913.

3 SHEETS-SHEET 2.

" ES iA-T N :FFIC

Jenn n. Henson, or nnnmue, ARKANSAS, SSIGNOB or one-HALF 'ro swarms r.

AUSTIN, or DENNI a, menses.

COMBINATION-LOCK.

To all wkomz't may concern:

Be it known that I, Join: H. HoBsoN, a citizen'of the UnitedSt-ates, residing at Denning, in the count-yof Franklin and State of Arkansas,-have invented a new and useful Combination-Lock, of which the following is a specification.

The present invention relates to improvements in combination locks, the primary object of the invention being the provision of a novel form of lock, to be used upon safe or vault doors where a series of bolts are employed, or where it'is desired simply to use a single bolt. I

A further objectof the present invention is the provision of a lock of this character in which the locking bplts when manually projected, automatically release the tumblers to prevent the automatic retraction of the bolts, and where manual manipulation of the tumblers to set a desired combination, permits of the automatic retraction of the bolts at the instance of the set of the combination.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawingsFigure l is a frontview of a safe with the lock in operable position with relation thereto.- Fig. 2 is a rear elevation of the complete mechanismof the lock showing the tumbler controlled mechanism in locked os'ition, three of the bolts being broken ofl Fig. 3 is, a similar view with the parts in the position they assume when in unbolted position. Fig. 4 is a section taken on line 4% of Fig. 2.

Referring to the drawings, the numeral 1 designates the safe, provided with the door 2, and disposed for movement within the body of. the door toward and into engagement with the proper receptacles in the wall surrounding the same, are a series of bolts 3, 4, 5 and 6, respectively, the bolts when released being automatically actuated by means of the spring 18, as will later appear, the spring 18' being connected to the Specification of Letters Patent.

Patented Mar. a, rare.

. Application filed September 25, 1911. Serial No. 651,230.

spindle gh the door bler casing 18 and bolt actuating mechanism. The casing 11 is disposed upon the rear of the door or mounted therein so as to be movable with the door and: is preferably a rectangular casing.

Keyed upon the inner end of the stem 9 of the handle 7 and rotatable therewith, is a circular disk or plate 12,- .provided with a series of cam slots 13, in this particular instance being four, and in whichis adapted to slide the respective pins 14 of the three bolt stems 15, and the frame actuating stem 16. The bolt actuating stem 15 is connect ed to the respective bolts 3', l and 5 and the casing actuating stem 16 is rectangular frame 17 having the short bolt 6.

Connected with the casing 11 and within the rectangular frame 17 in a fixed position, is a circular tumbler casing or band 18, which incases a series of four tumblers 19 and a single tumbler 20, said tumbler 20 being somewhat larger in diameter than the tumblers 19 so as to permit the reduced portion 27 carried by the rectangular frame 17, and the purpose of which will presently appear, to engage the slot 25 of the tumbler connected to the 20, even though the peripheries of the tumblers 19 are in contact with the projection 27. The tumblers 19 and 20 are of usual construction and are connected to be operated by the stem 10, whereby the slots 25 of the same maybe thrown into and out of regis-' trat-ion with each other when the combination has been setor released, and the purpose of which will presently appear.

Mounted on the stem 10 at one end of the casing or band 18, is the tumbler 20, whose boss 21 has connected-thereto one end of the coiled spring 24' as at 23, the outer end of said spring being connected to the casing 18. The tumbler 20 is the first tumbler to be actuated when the combination is being set, the other tumblers being operated in succession as will presently appear. When all of the peripheral slots 25 of the various tumblers 19 and 20 are in registration or aline, with the slot 26 of the casing 18, the lugs or projections 27-27 carried by the frame 17 will assume the position as shown in Fig. 3, thus retracting the bolts 3, at, and 6. The lug 27 as indicated, is provided with the reduced portion 27, which registers with the slot 26 of the tumbler 20.

From the foregoing description, taken in connection with the drawings, the operation of the present lock is readily understood,lout briefly stated it is as follows z-Assuming that the tumblers 19 and 20 are of the usual permutation lock character, and it is desired to move the bolts 3, 4, 5 and (5 from the position shown in Fig. '2 to that shown in Fig. 3, the stem 9 which is now under the tension of the spring 18, has a normal tension to 1'0- tate to retract the bolts to seat the lugs 27-27 within the slots 25 of the tumblers 19 and 20 when they are alined. It is therefore necessary to operate the stem 10 to bring the slots 25 of the various tumblers 19 and 20 into registration with the slot 26 of the casing 18,.and in order to do this, the'knob 10 is rotated clockwise approximately 5 of a revolution, such distance selecting the inner tumbler 20 and placing its slot 25 into registration with the slot 213, this action winding the spring 22} to its fullest tension and permitting the lug 27 to slightly engage the slot 25 of the tumbler 20 and thus lock the tumbler 20 and the spring 23 wound. The knob 10 is now rotated in the opposite direction or counterclockwise for approximately of the distance of the last rotation or until the slot 25 of the inner tumbler 19, adj acent to the tumbler 20, is placed into registration with the slot 26. The stem 10 is now rotated clockwiseapproximately of the distanceof the first rotation or until the second tumbler 19 has its slot 25 placed in registration with the slot 26. The stem 10 is now rotated counter-clockwise approximately a distance of one-half the distance of the first rotation or until the slot of the tumbler 19 next to the outer tumbler 19 is placed in registration with the slot 26 of the casing 18.

The final movement of the stem 10 is the rotation thereof clockwise approximately the distance of the first rotation or until the slot 25 of the outer tumbler 19 alines with all of the various slots of the tumblers 19 and 20, and with the slot 26, at which time, the lugs 2'7-27'. due to the action of the spring 18 and the rotation of the stem 9, will be moved inwardly and seated fully within the alined slots 25 of the tumblers 19 and 20. Thus the spring 18 automatically retracts the bolts 3, 4. 5 and 6.

It will. thus be seen that the seating of the lugs 2'(27 within the registering slots 25 of the tumblers 19 and 20 is automatic, and

' that the placing of the slots 25 of the various tumblers 19 and 20out of registration is also automatic through the action of the spring Thus the bolts 3, at, 5 and 6 are released. to automatically retract when the spring 23 is placed under tension and the various slots 25 of the tumblers 19 and 20 are 'in the position to receive the lugs 27-27, and that the moment the stem 9 is manually operated to place the spring 18' under tension, andto unseat or remove the lugs 27-27 from the alined slots 25,that the spring 2 will move all of the tumblers 19 and 20 so that their peripheries will bridge the slot 26 and hold the lugs 27-27' in the position, as shown in Fig. 2, with the bolts projected. 1

What is claimed is: Y

1. In a combination look, a casing, a plurality of tumblers mounted therein, a knob actuated stem operably connected to said tumblers, a slidable frame carrying a locking bolt surrounding said tumblers, co-acting means carried by said frame and the tumblers to permit an oscillatory movement of saidframe, a spring actuated stem journaled in the casing and parallel with the knob actuated stem, and means carried by said last mentioned stem for operably connecting the stem tothe frame, whereby the spring actuated stem is automatically rotated and the by the tumblers.

2. In a combination look, a casing, a circular tumbler casingdisposed therein, a series of tumblers mounted in said tumbler, casing, a stem. for actuating said tumblers journaled in the main casingand operable exteriorly thereof, a springfor operating the stem and the tumblers in one direction, said spring being wound as the stem is manually operated, a frame for carrying a locking bolt surrounding the tumbler casing within the main casing and capable of a reciprocatory movement, said tumbler casing and tumblersbeing provided withslots adapted to be placed in register, a lug carried by the frame and disposed in line with the slot of the tumbler casing, said lug being '95 frame retracted when freed v positioned to move into the slots of the tumblers when said slots register with the slot of the tumbler casing, another stem disposed parallel to the first mentioned stem ing bolt surrounding the tumbler casing within the main casing and capable of are riprocatory movement, said tumbler casing and tumblers being provided with slots 5 adapted to be placed in register, a lug carried by the frame and disposed in line with the slot of the tumbler casing. said lugbeing positioned to more into the slots of the tumblers when they register with the slot of the tumbler casing, means for recipro eating the frame and locking bolt, a spring for actuating said means automatically when the slots of the tumblers and tumbler casing are in alinement to retract the frame and bolt, and a series of locking bolts operably connected to the said last mentioned means and operable simultaneously with the reciprocatory frame and its bolt.

4. In a combination lock, a rectangular casing, a tumbler casing disposed therewithin and provided with a slot in the wall thereof, a plurality of tumblers disposed in said tumbler casing, each of said tumblers being provided with a slot adapted" to register witlrthe slot of the tumbler casing, means for operating said tumblers to throw their slots into alinement with the slot of the tumbler casing, a reciprocatory frame disposed within the main casing and surrounding the tumbler casing, a locking bolt carried thereby, a lug provided upon the frame and in alinement with the locking bolt and positioned to register with the slot of the tumbler casing when in looking position and to fit within the slots of the tumblers in unlocking position, a stem carried by said frame upon the opposite side to the locking bolt and within the main casing, manually operated means connected to said last mentioned stem for moving the frame and locking bolt into locked position, and a spring for automatically moving the frame and bolt into released position.

The combination with a door, of a combination lock therefor, comprising a main 5 casing carried by said door, a tumbler casing mounted in said main casing, said tumbler casing being provided with a slot in its wall, a plurality of tumblers disposed within said tumbler casing, each provided with a slot adapted to register with the slot of the tumbler casing, manually operable means for actuating said tumblers in one direction, a spring for actuating the tumblers in the opposite direction, said spring being wound as the said means is manually actuated, a frame disposed for reciprocation within the main casing and surrounding the tumbler casing, a locking bolt carried by said frame and adapted to project through the main casing to lock the door, a lug carried by the frame upon the opposite side to the locking bolt and in line to register with the slots of. the tumbler casing, said lug when the slots of the tumblers register with the slot of the tumbler casing being retracted therein to release the locking bolt, a spring returned stem operable exteriorly of the door and mounted within the casing for reciprocating the frame to project and retract the locking bolt, and a plurality of bolts disposed within the door and operably connected to said stem for simultaneous movement with the reciprocation of the frame and lockin bolt.

In testimony hat I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JOHN H. HOBSON.

Witnesses p R. M. ADAMS, J OHN BUTLER.

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