US568562A - Permutation-pad lock - Google Patents

Description

{No Model.)

7, G. 1 .1mm IBRIMUIITATION PADLOG K.'

No. 568,562.. Patented Sept. 29, 1896.

NITED STATES PATENT FFICE.

- GEORGE F. DAY, OF BOSTON, MASSACHUSETTS.

PERM UTATlON-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 568,562, dated September 29, 1896.

Application filed May 4, 1896. Serial No. 590,119. (No model.)

on the permutation principle by means of a.

plurality of tumblers which must be moved into a certain predetermined relative arrangement before it is possible to unlock the look.

It is very desirable in connection with small articles and with bicycle and hitching chains and in other relations that a strong, durable, and compact keyless padlock should be provided which cannot be easily picked and which at the same time shall be at least as cheap as the ordinary padlock which is operated bya key. Accordingly it is the object of my invention to provide such a padlock, my invention, however, not being limited in its use to a padlock, but being readily applicable to other forms of looks.

My invention will be more fully set forth hereinafter by detailed description, reference being had to the accompanying drawings,and will be further defined in the claims hereunto annexed.

In the drawings illustrative of one form of my invention, Figure 1 is a front .elevation showing my improvement applied to a padlock. Fig. 2 is a central vertical section taken on the line 2 of Fig. 1. Figs. 3 and 4 are reverse elevations of the halves of the padlock opened away from each other; and Fig. 5 is a View similar to Fig. 4, showing a modified form of locking-bolt.

. In the present embodiment of my invention, as herein shown applied to a padlock, A designates the inclosing case, and B designates the hasp or securing bow or link,which may be of any usual pattern.

The hasp Bis herein shown as suitably pivoted at b and as held in locked position by means of the lock-bolt C, Fig. 4, or C, Fig. 5. This hasp is also preferably spring-controlled either by means, for instance, of the spring 8, Fig. 4, operating against the ejector D, or by means of the upper spring 3, Fig. 5.

Suitably connected with the lock-bolt and herein shown as resting upon the same is a spindle or projection 6, carried by a tumbler E, suitable operating means for the lock-bolt being provided in connection with the tumbler or tumblers and spindle e, said means being herein shown as the stem or thumbpost 6, extending integrally from the tumbler E to the outside of the case A.

I have herein shown two upper tumblers E E and one lower tumbler G, but this may be reversed, or, if desired, any number of upper and lower tumblers may be employed in an obvious manner.

The tumbler E is herein shown as being carried by a thimble e surrounding the post e, the two tumblers E E being of the same diameter and having registering notches 6 as is customary in permutation-locks. These notches e are adapted to register with a tongue g, extending from the cut-away portions 9 of the lower tumbler G. Of course any other usual or suitable interlocking or registering means maybe substituted for the ton gue-andnotch arrangement herein shown.

When the respective tumblers are brought into proper registering juxtaposition, as indicated in Fig. 3, the lock-bolt is actuated by sliding the thumb-post e laterally in the slot a, formed in the case A. This lateral movement is permitted by reason of the fact that the tongue 9 is then opposite the registering notches a so that the latter may be moved downwardly over the former, whereas, when the several tumblers are in any other position than the proper registering position indicated, they will mutally prevent any bodily lateral movement whatever of the two sets of tumblers relatively to each other.

As a means of enabling the operator of the lock to quickly arrange the tumblers in their required registering position, the case A is provided with suitable dials, herein shown as comprising two eccentric circles, numbered, respectively, 1 to 12 and 10 to 60, Fig; 1, the respective tumblers having rigidly connected therewith the pointer arms or actuators e e and g In the use of my improved look, when itis the hasp B is turned down into the case A, as shown in Figs. land 5, and is immediately engaged by the spring-pressed lock-bolt and securely held in locked position. \Vhen it is desired to unlock the same, the respective actuators 6, e, and g are carefully turned to those points of the dials for which the tumblers are set and the notches e and tongue or tongues g are brought into cooperating registering position, as shown in Fig. 3. The operator then presses downwardly on the thumb-post e and thereby, by means of the engagement of the projection c with the lockbolt, operates the same, the thumb-post c and thimble e sliding in the slot at and carrying the tumblers E E with them, depressing the lock-bolt until it is disengaged from the hasp B. The latter then immediately springs forward at its free end by reason of the spring 8 or s or other suitable ejecting means.

While I have herein shown the bodily movement of the tumblers as restricted to the upper set of tumblers, yet it is obvious that if desired the lower tumblers may have a corresponding or other desired movement, if preferred; also, while I have shown the bodily movement as a lateral one, I do not intend to restrict myself to that movement otherwise than as specified in the claims, inasmuch as various other movements may be substituted.

Many other changes than those noted may be made in form, proportions, and relations of parts of my invention without departing from the spirit and scope of my invention.

hat I claim is 1. In a permutation-lock, a plurality of independently-rotatable tumblers, concentrically mounted, and capable of bodily lateral movement, means operated from the outside of the lock to so move said tumblers laterally, independent actuators rigidly mounted on and to rotate with said tumblers, and a fixed tumbler, also rotatable, said tumbler when in one position permitting said lateral movement and when in another position preventing said lateral movement, substantially as described.

2. In a permutation-lock, the lock-case, a slot therein, two independently rotatable tumblers within said case, independent actuators on the outside of said case and rigidly connected to said tumblers through said slot, and a tumbler mounted in a fixed bearing in said case and provided with an external actuator, said latter tumbler being arranged to cooperate with said former tumblers, substantially as described.

3. In a permutation-lock, a lock-bolt, and a spring normally maintaining the bolt in looking position, combined with a tumbler adapted to operate the bolt, the tumbler bein g bodily movable laterally from the outside of said lock, and said bolt being movable independently of the tumbler, and means cooperating with said tumbler permitting and preventing movement thereof, substantially as described.

4.. In a permutation-lock, a lock-bolt, and two independent tumblers, one being rotatable in a fixed bearing, and the other being laterally movable to cooperate with said fixed tumbler, said laterally-movable tumbler having a projection to en gage and move the bolt, and said two tumblers being independently rotatable both when the lock is locked and unlocked, substantially as described.

5. As an article of manufacture, a lock, having a case, a lock-bolt, a spring tending to maintain said bolt in looking position, two independent tumblers within the case, independent actuators rigid therewith and extcrnal to the case, one tumbler being mounted in fixed bearings, and the other tumbler being movable in its bearings, said tumblers being arranged to cooperate with each other, and a spindle or projection on one tumbler arranged to operate said bolt against said spring, the bolt being also movable independently of the said projection, substantially as described.

6. As an article of manufacture, a lock, having a case, a lock-bolt pivotally mounted therein, external operating means therefor permanently mounted on the lock, and tumblers controlling said operating means, said tumblers being independently movable both when the lock is locked and unlocked, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE F. DAY. \Vitnesses:

GEO. W. GREGORY, GEo. II. MAXWELL

Images