US1342033A - Permutation-padlock - Google Patents

Description

H. N. TENNILLE.

' PERMUTATION PADLOCK. 'APPLICAIION EILED APR. 18. 1911.

MRO, I I

INVENTOR l h'r'ry /V. 'Tnnille WITNESSES [WW BY 2 ATTORNEY HARRY 1v. rEnnILLnoF DUMBARTON; VIRGINIA."

' PEaMnT TroN-P DLocK.

Application filedApril 18, 1917. 7 Serial N0.163, 003.

To all whom it may concern: 7

Be it known that I, HARRY N. TE N LLE, a citizen of 'the United States,residing at Dumbarton, in the county of Henrico and State of Virginia, have invented certain new and useful Improvements in Permutation- Padlocks, of which the following is a specification. v I e This invention relates to permutation padlocks. I

The primary, object of the invention isto provide a permutation padlock provided with a plurality of annular tumblers asso ciated with an improved locking mechanism whereby the lock shackle-may bereleased only upon placing thetumblersina certain relative position, butwhich will permit the shackle to be placed into operative position, after being released, regardless of the position of the tumblers. Another object of thefinvention is to provide a permutation padlock having a looking 'bolt pivotally suspended from the shackle and resiliently held in operative position, whereby tampering withthe locking mechanism, through the medium of twisting or pulling the shackle will be-prevented.

Another object of the invention isto provide a plurality of rotatable'tumblers carrying'characters to be combinedfor forming a predetermined combinatiomthe tumblers being associated with a. locking bolt within the barrel of the lock, whereby the same may be released upon the proper combination of characters being formed.

A further object of this-invention isthe provision of a permutation padlock which consists of comparatively few parts and is simple in construction, but durable and well adapted to withstand the rough usage to which devices of this character are ordinarilysubjected. 1 7

For a full description of the invention and the advantages and merits thereof, ref? 'erence' is to be had to the following description I and the accompanying drawings, wherein is illustrated the preferred form of my invention, in which ;1

1 Figure 1 is a side elevation, of the flock constructed in accordance with my invention. 7

Fig.2 is a "longitudinal section therethrough.

shackle and locking bolt.

' I Specification of Letters Patent. I

- Fig.3 is a detail perspective view of the Patented auneiiiezo.

Fig. 4 is a detail perspective view of di of the locking tumblers. V p

v Fig- 5is -a transverse section on the, line 5 5nof Fig. 2. y,

-Fig. 6 is a similar, I

looking bolt in unlocked position. w v 7 Referring to thedrawing, wherein is illustrated the preferred form of my invention, and n which like numerals of reference indicatecorresponding 7 parts throughout theseveral views, the barrel 1 is of cylindrical formation and the same consists of the relatlvely large head 2 integrally connected with the cylindrical neck 3, the latter being of ,a diameter considerably less than the diameter of the head. A centrally located screw threaded recess lreceives the screw threaded stud 5,-carriedby the cap 6 which forms the end of the barrel opposite to the head 2 and whichis of the same general outline as the head. w

Rotatably mounted upon'the neck is a plurality of annular tumblers 7,8, 9 and 10, the same being'of identical construction, and slightly larger in diameter than the outer diameter of the head2 or cap 6.

These tumblers are in close frictional contact as shown by Figs. 1 and 2 of the drawing and their outer peripheries are provided with a plurality of characters, shown in the drawing as circumferentially spaced letters. One of these tumblers is-shown in detailin Fig. 4 of-the drawing, and it'will be noted that thesame is provided'with' an interior annular depressiongll, thereby forming a relatively thin annular flange 12. The flange 12 in each tumbler has anotch 13,- the'bottomof which is flush with the annular wall of the depression. It will be obvious, therefore, that when the notches 13 in all of the tumblers are alined, a longitudinal passageway will be formed through section showing the A snr OFFICE;

the superposed tumblers. The characteron with the notch in the tumbler will, of course,

v each tumbler which is'inradial alinement the combination for the 'purpose'of alining the notches. For instance, the notches in the tumblers 7, 8, 9v and 10 will be opposite the characters L, O, C, and K, respectively,

thereby forming the word look as the key-word for forming the combination,

whereby the notches. may be alined for the purpose of unlocking the look, It will be understood, of, course, that any other combination offletters may be employed to form the lock combination. a

The head 2 is provided with. a cavity 14 which mergesinto a longitudinal groove 15 formed in the neck 3. The cavity-14 also communicates with an opening 16, the latter opening receiving one, end of the shackle 17. Ifhe'oppositeend ofthe shackle is received in a recess 18, formed in the topof 10 the head 2, when the shackle is in locked positionk The end of the shackle which projects through the-"opening 16 is slightly longer than the opposite end of the shackle so that its terminal is disposed considerably within the cavity 14;. Tothis end of the shackle, a link 19 is pivotally connected v andf the o'pposite'end of thelink is fixedly connected to a locking bolt 20. The locking-bolt is thereby suspended from the end of'th'e shackle, and is permitted to be extended through the groove 15. The pivotal connection of the link with the shackle permits a rotarymovement ofthe locking bolt around the end" of the shackle, the latter acting as the axis jfor'the locking bolt. The cap 6 has a recess 2l in communication with the groove 15, so that the end of the lockingbolt maybe projected into the re-' cess 21, when the shackle is in locked position. It will be noted, however, that the distance the locking bolt projects into the recess 21 is substantially equal to the distance that the short end of the shackle projectsl into the recess'18, so that when this end of the shackle is withdrawn fromthe recess 18, the end of the,locking bolt will also be withdrawn from its recess 21.

Referring particularly to Fig. 3 of the drawing, it will be noted that the locking bolt is provided with tangential recesses 22,

longitudinally spaced thereby forming a series of equally spaced apart bits 22', the faces of which arebeveled as clearly shown by Fig. 2of the drawingp Extending into the neck 3, and communicating with the groove 5, is an orifice 23, the same receiving one end of a coil expansion spring 24 adapted to engage the adjacent side of the lockingbolt 20, thus forcing the locking bolt into engagement with the inner edges of the annular tumblers at the points where they pass through the groove 15, so that when the locking bolt is in locked positiomthe bits 22- will extend into the annular recesses in the tum blers and engage the fianges12, thereby preventing withdrawal of the locking bolt and consequently preventing withdrawal of the shackle. When the tumblers are rotated, however, and the combination is set so that the notches 13 will be alined, the locking ,bolt may be drawn through the passageway, thus formed to permit the shackle to be released from therecess 18. The spring, of course, holds the locking bolt in close engagement with the tumblers but permits the bolt to be longitudinally moved so that the shackle. may be released. By virtue of the 'beveled'faces of the bits22, the bolt may be thrust back into locked position even though the tumblers have been turned so that-the notches are in staggered relation.

The beveled faces will simply slide over.

the edges ofthe tumblers against the compression of the spring, which later will force the bits into the recesses to obtain the locked position. V

It is to be observed,also, that the extended end of the locking-bolt received in the recess 21, prevents the removal of the" cap 6 by unscrewing the stud 5, until after the shackle has been released and the bolt withdrawn from the recess'21. Suitable, longitudinally alined marks,designated by the arrows in Fig. 1, will be placed upon the surface-of the barrel and cap 6 to permit the operator. to determine at which point the characters are to be alined to form the combination. V V

A change in the combination is easily ac complished by unlocking the lock and unscrewing the stud 5, thus removing thecap 6. The tumblers can thereby be quickly removed from the neck 3 and replaced in any desired order to change the combination.

From the foregoing it will be'observed that a very: simple and durable lock has been provided, the details of which embody the preferred form. I desire it to be-un derstood, however, that slight changesin the minor details of construction may be made without departing from the spirit of the invention or the scope of the claim hereuntoappended.

"I claim: Y

A look comprising a cylindrical barrel,"

having a restricted neck: andequipped with a head at one end and provided with a removable cap at its opposite end, a plurality of annular members rotatably mounted on the neck and held against displacement ceived in the said recess and provided with a link ,pivotally connected to the end of the shackle and adapted for lateral swinging movement in the said cavity, a locking bolt attached to one end of the link and disposed to engage and disengage the said annular members as the said link is laterally swung in thesaid cavity, a spring ele- .180

ment having one end engaged with the said locking-bolt to normally urge it into engagement with the said annular members, the portion of the locking bolt thus engaged being provided with bits having flat surfaces adapted to engage the annular members to prevent Withdrawal of the locking bolt and beveled surfaces to facilitate insertion of the locking bolt, each of the said annular members being provided With a notch adapted for alinement when the annular members are in a predetermined position for providing a space whereby the said bits may be disengagedfrom the annular members to permit withdrawal of the said locking bolt.

In testimony WhereofI afliX my signature in presence of two Witnesses.

HARRY N. TENNILLE.

Witnesses:

B. O. ANDREWS,

M. W. MOCLINTOOK.

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