US1481380A - Permutation padlock - Google Patents

Description

Jan. ',22, 1924. 1,481,380 7 E. l. LINDBERG PERMUTATION PADLOCK Filed Fb. 26, 1923 2 Sheets-Sheet 1 I 1 E I Jan. 22 1924. 1,481,380

E. I. LINDBERG PERMUTATION PADLOOK Filed Feb. 26, '1923 ZSheets-Shaet- 2 INVENTOR. Ell 2'17 02387 I 40 characters Patented Jan. 22, 1924.

U N I TE it I NT OFFICE.

EMIL I. LINDBERG, F GACKLE, NORTH. DAKOTA.

PERMU'IATION IPADLOCK.

Application filed February 26, 1923. Serial No. 621,419.

To all whom it may concern" Be it known that I, EMIL I. LINDBEZRG, a citizen of Finland, residingat Gackle, in the county of Logan and State of North Dakota have invented certain new and useful Improvements in Permutation Padlocks, of which the following is a specification, reference being had to the accompanying drawlugs.

This invention relates to certain new and useful improvements in permutation pad locks wherein the looking or retaining pins for the shackle are controlled by rotating tumbler discs.

The primary object of the present invention is togenerally improve and simplify devices of the present kind whereby they may meet with the requirements for a successful commercial use.

Another object of the invention is to provide a permutation padlock having a shackle which is slidable to released position; and sliding and rotary locking pins for the shackle whereby a predetermined relation of one of said discs with the rotary locking pin will permit release of'the latter, and a different relation of said disc and the remaining discs will permit subsequent release of the sliding locking pin for per- 'mitting movement of the shackle to released or open position.

With the above general objects in view and other that will become apparent as the nature of the invention is better understood the same consists in the novel form combination and arrangement of parts hereinafter more fullydescribed, shown in the accompanying drawings andclaimed.

In the drawings wherein like reference indicate corresponding parts throughout the several viewet- Figure 1 is a front elevational view of a permutation padlock constructed in accordance with the present invention;

Figure 2 is a view of the padlock shown in Figure 1 with the back plate'of the padlock casing removed and parts in, section, the two rearmost tumbler discs being also removed;

Figure 31s a view similar to Figure'Q with the ratchet tumbler disc and its pawl applied and with the rotary locking pin in released position; I p I Figure 1 is a view similar to Figure'2 with the rotary locking p'i n releasedand with the tumblerdiscs disposed to permit release of the sliding locking pins;

Figure 5 is a view similar to Figure 1 with all of the tumbler discs in place and with both the sliding and rotary locking pins in released position;

Figure 6 is a vertical transverse sectional view of the lock complete, taken upon line 66-of Figure 5.

Figure 7 is an interior elevational view of the back plate of the padlock casing;

Figure 8 is an elevational view of the front tumbler disc;

Figure 9 is a view similar to Figure 8 of the tumbler disc which is arranged next to the disc shown in Figure 8; I

Figure 10 is a view similar to Figure 9 of the third tumbler disc which is disposed againstthe rear face of the disc shown in Figure 9;

Figure 11 is a view similar to Figure 10 showing the rear tumbler disc;

Figure 12 is a horizontal fragmentary see tional viewtaken directly above one of the sliding locking pins and adjacent parts;

1 Figure 13 is an elevational view] of one of the actuating members for the sliding locking pins; and

Figure 14; is a viewsimilar to Figure 12 taken to one side of the rotary locking pin.

Referring more in detail to the several views, the present invention embodies a padlock casing generally denoted by the reference character 5 andjwhich embodies a face plate 6 and a back plate 7 of similar form suitably secured in side by side contiguous relation by means of rivets 8 or the like, said plates 6 and 7 being formed in their adjacent faces with mating complemental vertical recesses 9 which open at the tops of the plates and which coact to provide a socket near one end of the casing for slidablere'ception of one end of the substantially U-shaped shackle 10. In a like manner the plates 6 and 7 are provided with vertical recesses 11 near their other ends which cooperate for producing a socket at the other end of the casing for reception of the other leg or. end portion of the shackle 10. The last mentioned recesses are preferably extended to a point slightly above the bot- "tom edges of the plates 6 and 7 so that this socket is longer than the socket formed by the recesses 9 for receivingthe longer leg 12 of the shackle. However, it is to be understood that the recesses 9 may be of the same length as the recesses 11 in case the shackle 10 is to be entirely removed from the casing and the leg 13 of the shackle which enters the socket formed by these recesses 9 may then be of the same length as the leg 12 without departing from the spirit of the present invention.

The leg 13 is made shorter in the form of the invention shown in the drawings because the shackle illustrated is of the sliding and swinging type wherein the longer leg 12 has a laterally projecting pin let at its lower end disposed in a vertical elongated groove formed by mating recesses 15 in the adjacent faces of the plates 6 and 7 at the outer side of the grooves or recesses 11 and communicating with the latter, said recesses 15 terminating between the top and bottom edges of the plates 6 and 7 so as to form an upper stop shoulder 16 for limiting the outward sliding movement of the shackle.

The lengths of the recesses 15 are such as to permit suiiicient sliding movement of the leg 12 so as to permit the leg 13 to move entirely out of the socket formed by the recesses 9 whereuion the shackle ma be.

swung laterally about a pivot definedhy the longer leg 12, by reason of the provision of an arcuate horizontal groove 17 extending from the upper ends of the recesses 15 into the wall of the recess 11 of the back plate 7, which groove 17 permits the pin it to move therein so that this swingingmovement of i the shackle is possible and limited in accordance with the length of the "roove 17.

A shaft or spindle 18 is journaled in the plates 6 and 7 centrally of the casing so as to extend transversely of the latter in a horizontal position. substantially midway between the legs of the shackle 10, and this shaft 18 has one end projecting through the face plate 6 where it is provided upon its extreme end with an operating knob or handle 19 for facilitating its rotation. The opposite end of the shaft may be suitably headed as at 20 to retain it in place. The plates 6 and 7 are provided with mating circular recesses in their adjacent faces as at 21 through the axes of which the shaft 18 extends and the mating recesses 21 form a cylindrical chamber in the lock casing in which are loosely and rotatably positioned the rotating tumbler discs 22, 23, 2-1- and 25.

A tubular shaft 26 is j ournaled in the fac plate 6 and rotatably disposed on the adj acent portion of the inner shaft 18, the front disc 22 being fixed upon the inner or rear end of the tubular shaft 26 as shown clearly in Figure 6. The outer end of the tubular shaft 26 has a suitable handle or knob 27 secured thereon for facilitating its rotation which knob 27 is disposed between the knob 19 and the adjacent face of the plate 6 and which is of a larger size than the knob 19 so .25 is suitably secured upon the rear end of the shaft 18 so that the discs 22 and are spaced apart a distance equal to the thicknesses of the disc 23 and 24, and the latter two discs are disposed upon the shaft 18 so as to be freely rotatable thereon between the discs 22 and 25.

As shown clearly in Figur s 8 to 11 inclusive, all of the tumbler discs are provided with similarly spaced notches 28 in the edges thereof, which notches are of similar size and form so that when the notches 28 of all of the discs are in register and disposed as shown in Figure 4-, the sliding locking pins 29 are slid inwardly toward each other for releasing them from the legs of the shackle 10 in a manner which will presently become apparent.

As shown in Figures 6 and 8 the front tumbler disc 22 has a laterally projecting pin 30 which is directed rearwardly and the adjacent tumbler disc 23 is provided with an arcuate slot 31 concentric with its axis and into, which the pin 30 projects. ;Also, the third tumbler disc 24 is provided with a similar laterally projecting pin 32 which projects forwardly into the slot 31, the pins 30 and 32 being of such. diameter and so 5 disposed that they may pass each other in the slot 31 of the disc 23. This latter construction is clear from Figure 6, wherein the pin 32 is shown as engaging the inner wall of the slot 31 and spaced from the outer;

wall thereof, while the pin 30 is shown contacting with the outer wall of the slot 31 and spaced from the inner wall thereof, said spaces being slightly greater than the diameter of each of the pins. By reason ofthis construction it will be seen that positive rotation of the disc 22 will be caused upon rotation of the tubular shaft 26, while relative movement between the disc 22 and the disc 23 and between the disc 23 and the disc 24: will be permitted. although upon con tinued rotation of the shaft 26. the pins 30 and 32 will engage the ends of the slot 81 so as to then impart rotation to the discs 23 and 2 1. It will also be seen that the inner shaft 18 simply controls the rear disc independently of the ren'iaining discs.

As shown in Figures 3, 5, and-10, the third disc 24 is provided with peripheral ratchet teeth 33 which are engaged by a swinging pawl 34k which has its outer end pivoted as at 35 in a socket 36 provided in the back plate 7, and which has its inner end yieldingly held in engagement with the teeth 33 by means of a compression spring 37 which is arranged within a further socket 38 of the plate7.

The inner end portion of the longer leg 12 of the shackle is provided with a transverse groove 39 at its inner side which coincides with the outer side portion of a cylindrical socket 40 which is formed by mating recesses in the plates 6 and 7 between the leg 12 and the tumbler discs. A horizontal transversely disposed rotatable locking pin 41 is journaled in the socket 40 and has a reduced end which projects through the faceplate 6 and which is provided with a suitable handle or knob 42 upon its outer end for facilitating the rotation of the pin 41. The pin'41 is provided with a transverse groove 43 in the side thereof so that when said pin 41 is brought to the position shown in Figure 3 with the groove 43 adjacent the groove 39, said pin 41 is released from the shackle, and when the pin 41 is turned to the position shown in Figure 2, so that said pin 41 enters the groove 39, the shackle 10 is effectively locked against outward sliding movement when in locked position. The lock casing is provided with a flared recess 44 between the socket 40 and the tumbler discs so as to allow free movement of an inwardly projecting pin 45 that is fixed to and projects laterally from the locking pin 41, said pin 45 being of such length that its free end has a path of movement inwardly of the peripheral edge of the disc 23. This prevents rotation of the locking pin 41 from the locking position except when one of the notches 28 of the disc 23 is brought to the position shown in Figure 2 in line with the free end of the pin 45. WVhen the disc 23 is thus disposed the pin 41 may be freely rotated from the position in Figure 2 to the released position of Figure 3, which movement of the pin 41 causes partial rotation of the disc 23 by engagement of the pin 45 with the wall of the notch 28 in the disc 23 which has been aligned with said pin 45.

The plates 6 and 7 are provided with horizontally aligned mating recesses 46 which extend from each side of the chamber formed by the grooves or recesses 9 and 11, as clearly shown in Figures 7 and 12. Horizontal sliding locking pins 29 are disposed in the grooves or recesses 46 for movement toward and away from the tumbler discs and the legs 12 and 13 of the shackle, the sliding locking pins 29 being adapted to enter transverse grooves or notches 48 in the inner sides of the shackle legs 12 and 13 for locking the shackle in closed position. The pins 29 are of such length that when they are slid to their limit of movement away from each other to engage in the grooves 48, their inner ends will be disposed outwardly of the peripheries of the tumbler discs, and the notches 28 are so disposed that when one of said notches of eachdisc is aligned with the inner end of one of thepins 29, theother notch 28 of each disc may be registered with the other pin29.

In order that the pins 29 may be under the controlling influence of all of the discs,

said pins 29 are provided with transverse horizontal heads 49 upon their inner ends which are of a length equal to the combined thicknesses of all of the tumbler discs as illustrated in Figure 12. These heads 49 have endsslidably engaging opposed faces of the inner portions of therecesses 46 which are deepened for this purpose as at 50.

A transverse horizontally disposed rota: table shaft 51 is journaled in the face plate 6 above each of the pins 29, and each shaft 51 is provided with a laterally downwardly projecting pin 52 whose free end loosely engages in a socket 53 provided in the adjacent side of the adjacent pin 29. It will thus be seen that when the discs are properly positioned forpermitting inward movement of the pins 29 to released position, such movement of said pins may be caused by rotation of the shaft 51 in one direction, while said pins 29 may be projected outwardly to looking position upon rotation of the shafts 51 in the opposite direction. Each shaft 51 is provided with a handle or knob 54 upon its outer end outwardly of the plate 6 for facilitating its rotation or partial rotation, Suitable dials 55 may be provided about the several knobs and the latter may be provided with suitable pointers 56 so that the lock may be readily operated by one familiar with any desired predetermined combination for which the lock has been constructed. The exact combination may vary as desired and no specific combination will be mentioned herein.

In operation, assuming that the pins 41 and 29 are in locked position as shown in Figure 2, the knob 27 is turned in the dire-:- tion of the arrow 00 of Figure 2 until the pointer of the knob 27 registers with the proper number of its dial wherein a notch 28 of the disc 23 is in line with the pin 45. The pin 41 is then turned from the position of Figure 2 to the position, of Figure 3 so that the leg 12 will be unlocked in so far as the pin 41 is concerned. The knob 27 is then further turned in the same direction of turning as that in which the pawl 34 is inactive for preventing rotation of the disc 24. This turning movement of the knob 27 is continued until its pointer is registered with the proper number of its dial wherein the disc 24 has been turned to bring its notches 28 in register with the sliding locking pins 29, rotation being imparted to the disc 24 from the shaft 26 through the discs 22 and 23 by engagement of the pin 30 with one end of the slot 31 and the engagement of the pin 32 with the opposite end of said slot 31. The knob 27 is then turned in the opposite directionuntil its pointer registers with the proper number of its dial with the notches 28 of the discs 22 and 23 broughtin register with each other &

ing this reverse turning movement the pin 30 moves from one end of the slot 31 to the opposite end thereof. The disc 22 then causes the disc 23 to be rotated until said one end 01" the slot 31 is engaged by the pin 32, whereupon the discs 22, 23 and ainst "further turning in this direction by the pawl 34 and these three discs are stopped with their notches all aligned or in register with each other and with the sliding locking pins 29. The knob 19 is then turned in the direction of the arrow .7) until its pointer is aligned with the proper number of its dial wherein the notches 28 of the disc are brought in register with the notches of the other three discs and in alignment with the pins 29. The knobs 5 are then turned in the proper direction to slide the pins 29 into the notches 28 from the position of Figure i to the position of Figure 5, wherein said pins 29 are disengaged from the legs 12 and 13 of the shackle 10.. lVhen this has been done the shackle may no readily drawn outwardly to unlocked position, and with the specific form of shackle shown, the latter is swung about the leg 12 after the leg 13 has been withdrawn entirely out of the socket formed by the recesses 9. lVhen it is desired to lock the padlock the shackle is swung to align the leg 13 with its socket and the shackle is then forced inwardly to cause the leg 13 to enter its socket. The knob 27 is then turned a slight distance to align a notch of the disc 23 with the pin Q5. The pin 41 is then rotated to its locking position as shown in Figure 2. It will be understood, however, that the knobs 54 have been previously ro tated to slide the pins 29 outwardly into the notches 4:8. lVhen these steps have been taken, the notches of the several discs have been moved out of register and the inner ends of the pins 29 are engaged with the peripheral edges of one or more of the discs whereby said pins are eiiectively held in outwardly slid locked position.

From the foregoing description it is believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated by those skilled in the art.

Minor changes may be made without materially departing from the spirit and scope ot the invention as claimed.

What I claim is 1. A permutation padlock comprising a casing having spaced vertical sockets therein open at the top of the casing, a substantially U-shaped shackle adapted to have its legs slidably moved into said sockets,

are held a nesnaeo a horizontal transverse rotatable locking pin operatively associated with one leg of the shackle, a horizontal slidable lockin pin operatively associated with the other leg of the shackle, means to manually move said locking pins separately to looking or released position, means including a plurality of rotatable tumbler discs having a transverse horizontal axis and mounted between the legs of the shackle for retaining said lock operatively associated with one leg of the shackle, a horizontal slidable locking pin operatively associated with the other leg of the shackle, means to manually move said locking pins to looking or released position,

means including a plurality of rotatable tumbler discs having a tranverse horizontal axis and mounted between the legs of the shackle for retaining said locking pins in locking position and movable to positions for permitting releasing movement of the locking pins, and means to rotate said tumbler discs, the sliding locking pin being under control of all of said tumbler discs, and means placing the rotary locking pin under the controlling influence of a single one of said tumbler discs.

3. A permutation padlock comprising a casing having spaced vertical. sockets therein open at the top of the casing, a substantially U-shaped shackle adapted to have its legs slidably moved into said sockets, a horizontal transverse rotatable locking pin operatively associated with one leg of the shackle, a horizontal slidable locking pin operatively associated with the other leg of the shackle, means to manually move said locking pins to looking or released position, means including a plurality of rotatable tumbler discs ha ing a transverse horizontal axis and mounted between the legs of the shackle for retaining said locking pins in looking position and movable to positions for permitting releasing movement of the locking pins, and means to rotate said tumbler discs, a shaft upon which one of said discs is fixed, means supporting a pair of said discs for free rotation relative to the shaft and the first named disc, and means operatively connecting said discs in serial order whereby the discs are placed under the actuating influence of each other and are permitted limited movement relative to each other.

a. A permutation padlock comprising a casing having spaced vertical sockets therein open at the top of the casing, a substantially U-shaped shackle adapted to have its legs slidably moved into said sockets, a horizontal tranverse rotatable locking pin operatively associated with one leg of the shackle, a horizontal slidable locking pin operatively associated with the other leg of the shackle, means to manually move said locking pins to lockin or released position, means including a p urality of rotatable tumber discs having a transverse horizontal axis and mounted between the legs of the shackle for retaining said locking pins in looking position and movable to positions for permitting releasing movement of the locking pins, and means to rotate said tumbler discs, a shaft uponwhich one of said discs is fixed, means supporting a pair of said discs for free rotation relative to the shaft and the first named disc, and means operatively connecting said discs in serial order whereby the discs are placed under the actuating influence of each other and are permitted limited movement relative to each other, one of said discs having ratchet means for preventing its rotation in one direction and permitting its free rotation in the opposite direction, a second sliding locking pin associated with the first named leg of the shackle, and means for moving the last named locking pin to looking or released position, all of said discs having peripheral notches of similar form and similarly spaced whereby one set of notches may be aligned with each other and with one of the sliding locking pins'for permitting its release when the other set of notches are registered and aligned with the other slidin locking pin for permitting the release of t e latter.

5. A permutation padlock comprising a casing having spaced vertical sockets therein open at the top of the casing, a substantially U-shaped shackle adapted to have its legs slidably moved into said sockets, a horizontal transverse rotatable locking pin operatively associated with one leg of the Shackle a horizontal slidable locking pin operatively associated with the other leg of the shackle, means to manually move said lockingv pins to lockin or released position, means including a p urality of rotatable tumbler discs having a transverse horizontal axis and mounted between the legs of the shackle for retaining said locking pins in looking position and movable to positions for permitting releasing movement of the look ing pins, and means to rotate said tumbler discs, a shaft upon which one of said discs is fixed, means supporting a pair of said discs for free rotation relative to the shaft and the first named disc, and means operatively connecting said discs in serial order whereby the discs are placed under the actuating influence of each other and are permitted limited movement relative to each other, the means for placing said discs under the actuating influence of each other and for per mitting their limited relative movement embodying lateral oppositely projecting extending toward each other and carrie by two of said discs and another of said discs being arranged between said two discs and having an arcuate slot into which said pins project, said pins being disposed so as to pass each other in said slot.

In testimony whereof I hereunto afiix my signature.

EMIL I. LINDBERG.

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