US1920489A

US1920489A - Combination padlock

Info

Publication number: US1920489A
Application number: US640605A
Authority: US
Inventors: Toscano Francisco
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-11-01
Filing date: 1932-11-01
Publication date: 1933-08-01
Anticipated expiration: 1950-08-01

Description

F. TOSCANO 1,920,489

COMBINATION PADLOCK Aug. l, 1933.

Filed Nov. l, 1932 2 Sheets-Sheet l INVENTOR Francisco osvano Aug. l, 1933. F TQSCANO 1,920,489

COMBINATION PADLOCK Filed Nov. l, 1932 2 Sheets-Sheet 2 INVENTOR @m2061900 Toscano ATTORNEY Patented Aug. 1, 1933 UNITED STATES "PATENT, oFFlca g 1,920,489 COMBINATION PADLooK Francisco Toscano, Los Bancs, yCalif. Application November 1, 1932. serialNo. 040,605

3 Claims.

This invention relates to padlocks having, a combination locking device for holding the shackle against opening movement and in which the setting of the proper combination releases the shackle without the use of a key.

They principal object of my invention is tovprovide a lock of this general character so constructed that the combination can be set and of course broken in the clark,V and one in whichthe combination may be easily changed at the option of the owner with very little trouble. The lock is also very silent in operation so that it would be hard for an unauthorized person to tell whether he was attaining the desired end or not by sound.

A further object is to arrange the parts of the lock so that thereis no danger of any detrimental strain being placed on the combination discs or tumblers with any attempt to pry the shackleV loose from its locked position, without necessitating making suchv discs veryheavy, sothat the lock mechanism-may be kept in relatively compact and non-bulky form while still having ample strength for its purpose. f

' vA fur-ther object of the invention is tok produce a simple and inexpensive device and yet one which will be exceedingly effective for the purpose for which it is designed. v f

These objects I accomplish by means of such structure and relative arrangement ofr parts as will fully appear by a perusal of the following specicaton and'claims. y

In the drawings similar characters of reference indicate corresponding parts in the several views:

Figure 1 is a side elevation of the padlock with the shackle in its looked position.

Fig..2 is a sectionalelevationof the padlock with the shackle held locked.

Fig.A 3 is a similar view showing the locking discs turned to release the'shackle.

Fig. 4 is a perspective view of the upper cap unit and shackle detached from the body.

Fig. 5 is a sectional plan on the line` 5-5 of Fig. 3.

Fig. 6 is a perspective view of the tumbler and dial assembly showing the combination broken.

Fig. 7 is a similar View showing the position of the discs subsequent to the initial combination setting operation.

Fig. 8 is a similar view showing the position of the discs subsequent to the second setting operation.

Fig. 9 is a similar view showing the combination fully set subsequent to the third setting operation. y

Referring now more particularly to the characters of reference onthe drawings, the numeral 1 denotes the body of the lock-a hollow cylindrical member having tcp and

bottom caps

2 and 3 respectively' permanently secured to the body in a suitable manner. Under and spaced from the top cap is what may be termed a false cap 4. 'A spindle 5 is turnably mounted in and extends between the caps 4 and' 3 and below the latter is provided with a removable finger knob 6. Fixed on the spindle just above the bottom cap is a dial member `'7 having peripheral numbers 8 thereabout one at a time of which is visible through an opening 9 in the body. The numbers are preferably of luminous paint so'that` they are readily visible in the dark.

Turnably centered on the spindle between the dial and the. cap 4 are the tumbler `discs 10, -11

and 12 respectively reading upwardly from the bottom and held apart by spacers on the spindle. These discs aline with notches 14 cut in one leg 15 of the shackle 16 when said shackle is in its depressed position; the other leg 17 of the shackle being slidably and turnably mounted in the body beyond the lperiphery ofthe discs. The leg 15 is lslidable in a tube 18 depending from the cap `4 into the body in opposed relation to they leg 17, said tube having notches 19 alined with the discs and into which said discs project in movable but close tting relationship as regards their upper edges.`

The discs also project into the shackle notches and each is providedwith a peripheral notch 20 shaped to follow the contour of the shackle leg as shown in Fig. 5 so that when the discs are. turned so that all the lnotches-aline with each other and with the shackle the latter can be withdrawn.

The manner in which the discs are turned to place the notches into or out of alinement with each other and with the shackle so as to set or break the combination is as follows.

, Projecting upwardly from the dial 'l in offset relation to the spindle isa pin 21 adapted to project into any one of a number of holes 22 drilled through the adjacent disc 10 concentric with the spindle. The lower portion of the pin is in the form of a screw 21a mounted in the dial for longitudinal movement for the purpose which will be seen later. The head of the screw when the dial is turned to certain combination setting a slot 25 of great arcuate length in the disc 11.

, pulling pressure on the shackle; The discs may Similarly the disc 11 has a pin 26 projecting up` wardly from between the ends of the slot 25, said pin riding in `a shorter slot 27 in the disc 12.

In operation to set the combination from a broken position, as inFig. 6 for instance, the knob is turned to the left until a certain predetermined number ofthe dial appears through the body opening 9. With this initial turning the disc 10 of course constantly turns therewith, the disc 11 is iinally turned somewhat by the engagement of the pin 2liv with one `end of the slot 425, and the disc 12 is subsequently turned by the en-` gagement of the pin 26 with one `end of the slot 2'7, so that said disc 12 is turned to place its notch 20 in alinement with the shackle leg 15, as shown in Fig. 7. i

Upon the turning the knob to the right a certain arcuate amount or so that another predetermined number on the dial appears through the.A

dial is thenl again turned to thetleft tobring' another dial number in exposed position in the opening9, which turns the disc l0 to its set p0- sition without moving the dials l1 and 12 from :their previously set positions or as shown in Fig. 9.v The three dial notchesthen alinewith the shackle notches permitting fthe shackle to be drawn up from the body to a clear position.

It will be noted from Fig. 5 that the discs `are always engaged in the :notchesk i9 of' the tube 18. Thus -if an attempt is made` to pull the locked shackle out of the body thediscs will be immediately pulled against the unyieldingr tube 13' and held against probable bending by reason, of the therefore be made relativelyy thin without loss of strength for their purpose.

Leaf springs 28 are mounted in the body and pressingly engage the sides of the variousdiscs to restrain movement of the same once they have .been set.v Ifat anytime it is desired to change the -combinationtheknob 6 is removed, which more freely exposes the holes 23 in the adjacent body cap 3. The screw 21a is then turned from `the opening 23 with which it is then `alined to withdraw the pin' 21l from the here z2 with which it was previously engaged, and the dialis then rotated leaving the disc stationary until the pin ldial in one Adisc or the other to kset the discs.

From the foregoing description it willbe read Yily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus describedmy invention what I claim' as new and` usefuland desire to secure by Letters Patent is:

1. A padlock comprising a body, a shackle havping opposite legs slidable in the body, one of said legs having notches therein, a spindle turnably mounted in the body parallel to the shackle legs, a plurality of tumbler discs separately turnable on the spindle and alined with the leg notches to cooperate therewith, cooperating means to cause said discs to be rotated in predetermined order by the rotation of the lower disc, said discs also having notches to aline with the leg notches for `releasing the shackle, the lowerrnost disc having aiseries of holes concentric with its axis, a grad- .uated dial fixed on the spindle in the body below said disc, a screw pin mounted in the dial parallel to the spindle'and adjustable axially for engagement and disengagement with any disc hole selectively, the adjacent end of the body having holes spaced the Vsaine as disc holes to expose the adjacentend oi the pin to the outside of the body to permit of the adj ustnient of the same.

2. A padlock comprising a body, a shackle having opposite legs slidablc in the body, one of said legs having a notch therein, a spindle turnably mountedin the body,r parallel to the shackle legs, locking means for the shackle including a tumbler disc to engage with the leg notch and having also a notch to valine with the leg notch ior releasingthe shackle, said disc having a seriesv of `the spindle for turning the same, and selectively v adjustable means operable without disturbing the shackle from any position `for connecting said disc and dial in different positions relative to each other. l,

A padlock comprising a body, a shackle having opposite legsslidable in the body, a spindle turnable in the body and operable from exteriorally of the same, means to lock the shackle against movement including a member concentric with and turnable relative to the spindle and selectively adjustable means operable Without disturbing the shackle from any position for connecting the member and spindle in driving relationship in `different positions relative 'to each other.

FRANCISCO TOSCANO.