US1241435A - Permutation-padlock. - Google Patents

Description

C. w. PETERsoN. PERMUTATION PADLOCK.

APPLICATION FILED MAR. 27, i917.

Ptent-ed Sept. 2

E@ im INVENTOR ATTORNEY CHARLIE W. IPETERSON, OF GRAYSON, NEBRASKA. f

PERMUTATION-PADLOCK.

Application led March 27, 1917. Serial No.l 157,796. l

To all whom it may concern y Be it known that I, CHARLIE W. PETER- soN, a citizen of the United States, residing at Grayson, in the county of Sheridan and State of Nebraska, have invented certain new and useful Improvements in Permutation-Padlocks, of which the following is a specification. j

This invention relates to 'a permutation padlock and the primary object of theiinvention is to provide a locking mechanism arranged within a'casing and adapted to be so operated by a person understanding the combination of the lock as to permit the shackle to be unlocked without the use of keys or the like. V

The invention also has for one of its objects to provide a pair of coperating barrels having helical raised portions adapted will require proper pre-determined movement imparted alternately to the keys to accomplish the desired result.

A further object of this invention is the provision of a permutation padlock which consists of comparatively few parts and is simple in construction, but durable and well adapted to withstand the roughusage to which devices of this character are ordinarily subjected.

For a full description of the invention and the advantages and merits thereof, reference is to be had to the following description and the accompanying drawings, wherein is illustrated the preferred form ofvmy invention, in which;

Figure 1 is a longitudinal'section through the lock casing, disclosing the operating mechanism mounted therein.

Fig. 2 is a section on-the line 2 2 of Fig. l.

Fig. 3 is an end view, disclosing the different positions taken by the key handles duringthe operation of the locking mechanism for unlocking thel shackle.

n Referring to the drawing, wherein is illustrated the preferred form of my invention, and inwhich like numerals'of reference in'- dicate corresponding parts throughout.. the several views, the casing 1 may be of any preferred shape and'has pivoted in one end, the shackle 2 the opposite end of which projects through an opening in the end of the casing to be locked in position within the casing when the shackle is closed. Mounted within the casingat the opposite end thereof is a bracket 3 which comprises a strip of material having its intermediate portion sccured to the end wall of the casing by a suitspecification or Letter; Patent. Patented Sept25, 191 *7.

able fastening element L1. From this poi-nt,

the ends of the bracket are bent to be disposedin `spaced relation to thek end wall of the casing. Mounted upon the ends of the brackets is a pair of barrels` 5 and 6. The

central portion of each barrel has a square opening for thereceptionof the shanks 7 ofthe operating keys 8. The operating keys project outwardly beyond the end of the casing sothat they may ,be operated from the exterior thereof. The opposite ends of the` barrels are each provided with short journals, mounted inopenings provided ina shelf 9 extending transversely across the casing between` the side walls thereof and engaged with the end of each barrel, sothat the said barrels are rotatably mounted and operate between the shelf 9 and the ends of the bracket 3.

The free end of the shackle within the casing is provided with va notch 1,0 adapted to be engaged by the end of alocking latch 11, pivotally mounted within the casing. The locking latch has. an arm 12 through which is extended an operating rod 13 having a head 14 formed on its terminal. The opposite end of the operating rod: is extended through a central opening in the shelf 9, and has its terminal provided with a connecting rod 15which comprises a short length of rod exactly equal in lengthto the distance between the proximate surfacesof the barrels 5 and 6. This rod is,'therefore, disposed at right angles to the operating rod 13 and is preferably integrally formed therewith. The ends of the rod 15 are normally in engagement with the surfaces of the barrels 5 and 6. A collar 1G .is mounted intermediate the ends of the rod 13, and a 'coil expansion spring 17 is interposed between the collar and the shelf 9, thereby tending to hold the head 14 in raised position, and the connecting rod .15 also in raised position.

The barrel 5 is provided adjacent each endwith a helical rib or raised thread 18. The upper and lower ribs are independent `of each other as clearly shown by Fig. 1and the lower terminal of the upper rib is spaced above the upper vterminal of the lower rib for' Y a distance substantially equal to the pitch of the said helical ribs. On the barrel 6,1 have provided a rib 19 disposed intermediate the ends of the barrel 6, and of helical ,formation and having its terminals spacedia'part for a distance equalV to the space 'between the adjacent ends of the helical ribs on the barrel 5. y

Assuming the parts to be in the position shownv by Fig. 1 of the drawing, the operation of the device will be as follows:

The key 8 liked to the barrel 5, will be rotated to complete three-quarters of a complete turn. During this movement, the helical rib 18 at the upper end of the vbarrel 5' lwilll engage the end of the rod 15, and force the same downwardly against the action of the coil spring 17.v This will bring the opposite end of the connecting rod 15 positions.

below the end of the helical rib`19 on the barrel 6. This barrel will then be rotated for three-quarters of a turn by its corresponding key. This will bring the two keys 8 tothe positions shownfby dotted lines in Fig. 3, and designated as the lirst and second This rotation' of the barrel `6 will bring the connecting rodv15 downwardly so that the opposite end' will be disposed beneath the end ofthe lower helical rib 18 on the barrel `5. The' key 8, of the barrel 5, will again berotated, but this rotation need only continue until such time as the head 14 engages on the arm 12 to tilt the -lat-ch for disengaging the same from the notch 10. The shackle 2' may then be opened. `Fori-placing vthe latch; back into operative position, it is merely necessary to turn the keys'to permit the spring 16 to raise the connecting rod`15, since it will be observed that the ends of each helical rib are spa-ced apart ysufficiently to permit lthe longitudinal ypassage of the rod 15. The flat spring QO'engaged with the latch tends to normally hold the same in locked position.

vFromthe foregoing it will be, observed y that a very simple and durablel permutation `padlock has been provided, the details of which embody the preferred form. I desire v .I claim;

1. A lock comprising a casing having barrels mounted therein, the barrels being arranged in spaced relation and provided with helical vthreads extending partially around the cylinder, operating means disposed within the casing and associated with the said cylinders whereby engagement with the said helical threads will operate the said operating means `when the barrels are rotated, a shackle, and a latch associated with the operating means and engageable with the said shackle.

2. A lock comprising a casing provided on its interior with a pair of spaced apart barrels, means eXteriorly mounted for rotating thebarrels, kan operating` rod having a connecting rod, the terminals of which engage the proximate surfaces of the'barrel, and means mounted onthe barrels and engageable with the ends of the said connecting rod for longitudinally moving the said rod when the barrels are rotated by the said means.

3. A lock comprising a casing having a latch pivotally mounted therein, ashackle engageable with the latch for holdingfthe shackle in locked position, an operating rod,

a pair of barrels rotatably mounted andfva'rranged in spaced relation, a connecting rod carried by the operating rod and engageable with the proximate surfaces of thebarrels, one of said barrels having a pair of helical threads, the other barrel having "a single helical thread, and means for Vrotating the barrels whereby engagement ofthe said threads with thesaid connecting rod will move the latter longitudinally for releasing the said latch.

4.v A lock comprising a casing having a shackle mounted thereon and provided with a latch pivotally mounted to engage-the shackle. a bracket mounted in the casing, a

pair of barrels rotatably 'mounted' on the bracket and provided with helical threads extending partially around each barrel to after the said connecting rod has been re- 10 provide spaces between the terminals of the leased from engagement with the threads. threads, an operating rod engageable with In testimony whereof I aliX my signature the latch7 a Cronreeting rod carried lliy th in presence of two witnesses.

operating ro an coperating witi t e sai threads to move the operating rod when the CHARLIE W PETERSON' said barrels are rotated, and an expansible Witnesses:

element mounted on the operating rod for RODOLPHE SANDOZ,

movingthe latter back to normal position AMI F. SANDoz.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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