US1337674A - Permutation-padlock - Google Patents

Description

' J! M. WALTER.

PERMUTATION PADLOCK.

APPLICATION FILED JUNE I, 1916.

1,337,674. Patented Apr. 20,1920.

v 5 a ATTORNEY UNITED STATES PATENT OFFICE.

JOHN M. WALTER, OF CALUMET, MICHIGAN.

PERMUTATION-PADLOCK.

Application filed June 1, 1916.

To all whom it may concern Be it known that 1, JOHN M. WALTER, a subject of the Emperor of Germany, residing at Calumet, in the county of Houghton and State of Michigan, have invented certain new and useful Improvements in Permutation-Padlocks, of which the following is a specification;

This invention relates to permutation padlocks.

The invention has more especial reference to an improved permutation padlock, which comprises a casing having arranged therein, a plurality of rotatable tumblers, which, when properly worked, will permit the withdrawal of the shackle.

More particularly, the present invention has reference to the novel construction and arrangement of the various component elements of the device, and it is the primary object of the invention, to simplify and reduce the cost of manufacture of devices of this character, and provide novel details in the construction and arrangement of parts with a view to higher efliciency generally.

Other improvements and novel details in the construction and arrangement of parts will be appreciated from the detail description below, which is to be read in connection with the accompanying drawing forming a part hereof and wherein I disclose the pre ferred. embodiment of the invention for purposes of illustration.

In the drawing:-

Figure 1 is a side elevation of my improved padlock;

Fig. 2 is a similar view with the dial thereof, removed;

Fig. 3 is a transverse section through the padlock;

Fig. 4 is a section taken on the line 4% of Fig. 3; and

Fig. 5 is a detail perspective view showing the bifurcated arm and indicator hand assembled and connected together;

Fig. 6 is a top plan view of the tumbler plate, indicator hand, bifurcated arm which is adapted to actuate the tumbler plate and a portion of the supporting sleeve, the casin of the padlock being shown in section.

eferring now more particularly to the drawing wherein like reference characters designate like or corresponding parts throughout the several views thereof, 1 provide a casing or receptacle 1, whereby the various parts of the lock may be housed.

Specification of Letters Patent.

Patented Apr. 20, 1920.

Serial No. 101,144.

A shackle 2 is passed through suitable openings in the marginal edge of the casing l and has one end thereof pivotally secured to the casing through the medium of ears 3, arranged interiorly of the casing, while the forward end thereof is beveled off as at A and engages with an abutment 5 carried upon the inner face of the side of the easing. A leaf spring 6 is secured adjacent the lower extremity of the pivoted portion of the shackle 2 and has bearing upon a portion of the side of the casing, thus, serving to normally force the free end of the shackle upwardly out of the casing 1. A sleeve 7 having a slot 8 is arranged centrally of the casing 1 and is secured thereto by means of a strip 9, afiixed to the bottom or rear wall of the casing 1. A push button 10 is slidably carried by the sleeve 7 and has arranged thereupon, at a point adjacent its inner extremity, a pin 11 which travels in the slot 8 of the sleeve 7. Spacing elements 12 are secured to the strip 9 and serve as means whereby the circular plate 13 having a slot or opening 11 arranged therein, may be held in spaced relation from the strip 9. The plate 13 is anchored within the casing of the padlock by being riveted or soldered to the spacing elements 12, these elements 12 being secured to the strip 9 which is soldered or otherwise anchored to the casing 1, as will be obvious by considering Fig. 3 of the drawing. A supporting post 15 is carried by the inner face of the circular plate 13 and pivotally supports a circular yoke 16, which yoke is arranged about the sleeve 7 in such a manner as to be engaged by the pin 11 and has formed thereon, a laterally extending arm which carries, at a point adjacent its outer extremity, an angularly disposed pin 17, the purpose of which shall be hereinafter described.

Referring now to the locking means whereby the shackle 2 will be held in a closed position, an arm 18 having its outer extremity offset, is secured to the pivoted end of the shackle 2 and extends forwardly into engagement with a spring keeper 19, which keeper, comprises a substantially arcuate spring having a portion thereof secured to the under face of the strip 9 as at 20 and extends forwardly into proximity with the circular yoke 16. A seat 21 is formed in the keeper 19 and is adapted to receive the outer end of the arm 18 therein. It will be apparent, that when the arm 18 is engaged withthe seat 21 of keeper arm 19, the beveled portion at of the shackle will be in a position adjacent the abutment 5 and due to the engagement of the arm 18 with the keeper 19 will be prevented from moving outwardly, until properly released.

In order to provide means whereby the keeper 19 may be actuated to release the arm 16, when it is so desired, I provide a plurality of rotatable tumbler plates 22 and 23, these plates being supported upon the sleeve 7 and having suitable openings or slots 1 1" formed therein and adapted to be brought into registration with a similar slot Ll formed in the circular plate 13. A suitable nut 24 1S threaded upon the sleeve 7 and is adapted to hold the plates 22 and 23 in snug relation as shown in Fig. 3.

A dial 25 is carried by one face of the lock or casing 1 and is provided with a plurality of graduations 26 upon the outer face thereof. These graduations are arranged in concentric circles as clearly shown in Fig. 1 of the drawings.

An indicating hand 27 is carried by the dial 25 and is provided with an elongated slot 32, the sleeve 7 extending through the slot and constituting a guide for the indicating hand as the hand is shifted transversely across the face of the dial 25. A washer 28 is threaded upon the outer end of the sleeve 7 and constitutes a means for retaining the hand 27 upon the face of the dial 25 and prevents the hand from becoming accidentally displaced therefrom. A suitable knob 27 is secured to the lower end of the indicating hand 27 to facilitate the swinging and sliding of the indicating hand over the face of the dial 25.

The dial 25 is provided with a circular opening 25 arranged centrally therein to permit a bifurcated arm 29 to be secured to the indicator hand 27 and at the same time allow the bifurcated arm 29 as well as the indicator hand 27 to freely slide to a properly adjusted position. The bifurcated arm 29 carries a finger 30 at its upper or outer end uponthe inner face thereof and the bifurcated portions of the arm 29 are secured to the indicator hand 27 by means of suitable transversely extending pins or other suitable fastening means indicated in general by the numeral 33. It should be understood that any suitable or desired means may be employed for connecting the indicator-hand to the bifurcated arm 29 without departing from the spirit of the invention. These connecting means, however, must be located near the inner or lower ends of the respective indicator hand 27 and arm 29. These fastening means 33 may easily pass through the central aperture 25 as indicated in Fig. 3, the fastening means being secured near the side edges of the aperture or slot 32 in the hand 27 and to rsaaeai the bifurcated portion of the bifurcated arm 29.

As above stated, a finger 30 is formed upon orsecured to the upper portion of the bifurcated arm 29 upon the inner face thereof and is so positioned as to engage the lugs '22 and 23 carried by the circular rotating tumbler plates 22 and 23. The dial 25 is positively held against rotating movement by means of a band 25 arranged upon the inner face thereof and snugly secured to the side portions or periphery of the casingl. Arms 13 are formed upon the circular plate 13 and engage the periphery of the casing at a point adjacent the flange 25 and are firmly held in engagement with the casing by means of suitable rivets or the like. A spring finger 31 is secured to the stationary plate 13 by means of a bracket 31 and this spring finger 31 is adapted to prevent rotary movement of the circular tumbler plate 22 under ordinary conditions, except when the lock is operated in a proper manner. The outer end of the finger 31 engages the periphery of the plate 22 as clearly shown in Fig. 2 of the drawings.

In reviewing the operation of the device, it will be seen that when the indicator hand 27 is shifted across the face of the dial 25 to cause the indicating point thereof to register with one of the concentric circles, at a predetermined point, the bifurcated member 29 will also move therewith and the indicating hand 27 is then rotated to a desired-point for causing the finger 30 to engage one of the lugs formed upon one of the tumbler plates 22 and 23 and in this way one of the tumbler plates is brought into proper position to cause the slot or opening 14: to register with the slot 14. The indicator hand 27 is again shifted to a proper position for causing the finger 30 to engage the lug of the other tumbler plate, whereupon the hand is then rotated or swung for causing this second tumbler plate to be moved to a proper position whereby the slot oroopening 14 will register with the slot or opening 14 formed in the first mentioned tumbler plate and :the slot or opening 14: formed in the plate 13.

When the slots 14' and 14 have been brought into proper registration, the push button 10 may be moved longitudinally of the sleeve 7, thereby causing the pin 11 to swing the upper end of the yoke 16 inwardly, this movement causing the pin 17 to be moved into the'registering apertures 14 and 14'. The movement of the push button 10 will in this way cause the seat 21 of the keeper-19 to be moved out of engagement with the arm 18, and as soon as this arm 18 has been released, the spring 6 will cause the shackle 2 to swing to an open position.

When it is desired to close the permutai tion lock, the shackle 2 is moved or swung o ienin s 14: out of re istration and also out of registration with the openings 1+1 formed in the plate 13, in this way preventing further movement of the circular yoke 16 due to the fact that the pin 17 as carried thereby will, if moved forwardly contact with the plate 22 and be held against further swinging movement. A washer 28' is carried by the sleeve 7 and engages the bifurcated arm 29 and holds this arm in close contact with the inner face of the dial 25.

While I have herein disclosed the specific embodiment of the invention, it will be apparent to persons skilled in the art, that the invention is capable of embodiment in other forms and devices difiering in detail and arrangement from that shown as may fall within the scope of the appended claims.

Having thus described the invention, what is claimed is 1. In a permutation look, a casing having a pivotal shackle, an arm carried by the shackle, a keeper for receiving said arm and locking the shackle in a closed position, a sleeve arranged centrally of the casing, rotatable tumbler plates arranged upon said sleeve, slidably mounted means within the sleeve, means adapted to be engaged by said slidably mounted means and adapted to engage said keeper for releasing said arm as said slidably mounted means is shifted and said tumbler plates provided with means formed therein for permitting sliding movement of the sliding means, and rotatable and slidable means carried by the sleeve whereby the tumbler plates may be independently rotated to aline the means formed therein for permitting sliding movement of said first mentioned slidable means at times.

2. In a permutation lock, a casing having a pivotal shackle, an arm carried by the shackle, a keeper for receiving said arm and locking the shackle in a closed position, a sleeve arranged centrally of the casing, rotatable tumbler plates carried by the sleeve, slidably mounted means within said sleeve, means adapted to be engaged by said slidably mounted means and adapted to engage said keeper for releasing said arm as said slidably mounted means is shifted for engagement with said keeper whereby said arm may be released, and said tumbler plates provided with means formed therein for permitting sliding movement of the slidable means, a rotatable and slidable indicator hand carried by the sleeve and an ranged exteriorly of the casing and means afiixed to said rotatable and slidable indicator means whereby the tumbler plates may be independently rotated to aline the means formed therein, for permitting sliding movement of said first mentioned slidable means, at times.

3. In a permutation look, a casing having a pivotal shackle, an arm carried by the shackle, a resilient keeper for receiving said arm and locking the shackle in closed position, a sleeve arranged centrally of the easing, rotatable tumbler plates arranged upon said sleeve, a push button slidable within the sleeve, means adapted to be engaged by said push button and adapted to engage said keeper for releasing said arm as said push button is shifted, a tumbler plate provided with means for permitting sliding movement of the slidable push button, a rotatable and slidable indicator hand carried by the sleeve exteriorly of the casing, and means affixed to said indicator hand whereby the tumbler plates may be independently rotated to aline the means arranged therein for permitting sliding movement of said button, at times.

4. In a permutation look, a casing having a pivotal shackle, an arm carried by the shackle, a resilient keeper, a seat formed in said keeper for receiving the arm and locking the shackle in closed position, a sleeve arranged centrally of the casing, rotatable tumbler plates carried by the sleeve, slidably mounted means carried within said sleeve, a circular yoke arranged about the sleeve in proximity to said resilient keeper and adapted for engagement with the slidably mounted means whereby said arm may be released, means formed in the tumbler plates for permitting sliding movement of the slidably mounted means at selected intervals, and rotatable and slidable means carried by the sleeve whereby the tumbler plates may be independently rotated to aline the means arranged therein for permitting sliding movement of said first mentioned slidable means, at times.

5. In a permutation look, a casing having a pivotal shackle, an arm carried by th shackle, a resilient keeper for receiving said arm and locking the shackle in closed position, a sleeve arranged centrally of the casing, a slidable push button carried by the sleeve, means arranged upon the push button for indirectly engaging said keeper for releasing the arm, rotatable tumbler plates arranged upon said sleeve, means arranged in said tumbler plates to permit sliding movement of the slidable push button at selected intervals, a rotatable and slidable indicator hand carried by the sleeve and arranged ex teriorly of the casing, and means afiiXed to said indicator hand whereby the tumbler plates may be independently rotated to aline the means arranged therein, for permitting sliding movement of said slidable push button at selected intervals.

6. In a permutation padlock including a casing, a shackle pivoted in the casing, a stationary tumbler plate having an opening, a keeper for engaging the shackle and holding it in the locked position, a yoke adapted to move the keeper and disengage the shackle, means for moving the yoke, a rotatable tumbler having an opening adapted to aline with the opening in the stationary tumbler, and a stop pin on the yoke projectable through the alined openings to permit the movement of the yoke.

7. In a permutation padlock including a casing having a shackle pivoted thereon, a keeper and a yoke cooperating to lock the shackle, a dial arranged on the casing, a plurality of tumblers cooperating with the yoke and provided with means adapted to be moved to a'predetermined position for permitting the yoke to be moved to operate the keeper, an indicator hand movable over the dial, and means operated by the indicator hand adapted to engage the tumblers for moving the tumblers to predetermined positions.

8. In a permutation padlock including a casing havinga stationary tumbler plate with an opening, a dial on the casing having radial and circumferential graduations, tumblers having openings adapted to aline with the opening of the stationary tumbler plate, means engageable with individual ones of the last named tumblers whereby the openings are moved into registration with the stationary tumbler plate opening, and an indicator hand slidable with respect to the radial graduations and revoluble with respect to the circumferential graduations for securing the adjustments of the second named tumblers. r

In testimony whereofI afiix my signature in presence of two witnesses.

JOHN M. WALTER. Witnesses:

E. H. MANGER, W. Y. WALIT.

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