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Publication numberUS870890 A
Publication typeGrant
Publication dateNov 12, 1907
Filing dateOct 30, 1906
Priority dateOct 30, 1906
Publication numberUS 870890 A, US 870890A, US-A-870890, US870890 A, US870890A
InventorsJohn Kruse
Original AssigneeJohn Kruse
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Keyless padlock.
US 870890 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PATENTED NOV. 12, 1907.





2. ,lN\1EN"roR. /4, 31 JOHN KRusE.

PATENTED 110112, 190?;



Q a snnn'ra-snnnw 2.

lNvENToR. JOHN KRUSE BY 714 AT rYi s k 2, .which can be removed by cutting or releasing rivets,



To tzz whom it may concern:

Be it known that 1, Joan Knusn, a citizen of the United States, and resident of St Louis, Missouri,

have invented certain new. and useful Improvements in Keyless Padlocks, of which the following is aspecification containing a full, clear, and exact description,

4 reference being bad to the accompanying drawings,

forming a part hereof.

My invention relates to a keyless padlock, the object J of my invention being to provide a simple, inexpensive locking mechanism which is particularly adapted for ,padlocks, and which may be applied for use as an ordinary lock by making slight alterations in the casing, which mechanism is so constructed as to be opened Without a key, operated in the dark, readily shifted or changed to form different combinations to be carried out in opening a lock, and which cannot be readily I opened by unauthorized persons.

.To the above purposes, my invention consists in certain novel features of construction and arrangement of. parts, which will be hereinafter more fully set forth, pointed outin the claims, and illustrated in the accompanying drawings, in which:

Figure 1 is a perspective view of a padlock of my in;- proved'construction; Fig. 2 is an enlarged elevation of the padlock withthe front plate thereof'removed, and showing the interior mechanism; Fig. 3 is a view similar to' Fig. 2, and showing the releasing mechanism shifted into a position so as to allow the release of the shackle; Fig. 4 is a vertical section taken approximately on the line 4-4 of Fig. 2; Fig. 5 is a vertical section taken on the line 5-5 of Fig. 3.

; Referring by numerals to the accompanying drawings, l designates the padlock housing which may be of any suitable shape, and provided with a front plate or similar fastening deyices. Pivotally connected to the top of'the housing 1, at one side thereof, is a shackle i 3, preferably of inverted U-shape, and the end opposite thepivoted end being adapted to pass through an opening formed in the top of the housing 1, and said end being provided with the oppositely arranged notches v I 5 and 6. The pivoted end of the shackle is provided i. with a lug 7, which extends through a suitable opening in the top of the housing, and against which bears the free endof a leaf spring 8 which is fixed to the housing, and the pressure of which throws the opposite end of the shackle upwardly when the latter is released.

plain, as designated by 14, and formed at one end of said plain portion is a lug 15. i

Specification of Letters Patent. I i

Application filed October 80. 1906. Serial No. 341.319.

Patented Nov. 12, 1907.

16 designates a disk provided in its edge with a notch 17, and which is friction tight upon the rear 1 end of the sleeve 11.

A coiled spring 18 is wound upon the sleeve 11, with one end seated in the ratchet wheel 13, the opposite end being fixed to a pin 19 which is seated in the housing 1 at a point between and immediately below the pins 9 and 10.

Mounted upon the forward end of the sleeve 12 is a ratchet wheel 20, provided on its periphery with a short plain flat space 21; and at the end thereof is formed a lug 22 23 designates a disk provided in its edge with a notch 24, and which disk is friction tight upon the rear end of the sleevel2.

' A coiled spring 25 is wound upon the sleeve 12, with one end seated in the ratchet wheel 20, the'opposite end being seemed to the pin 19.

Fixed in the lower portion of the housing 1, below the pin 19, is a pair of pins 26, on one of which is pivotally arranged a bell crank lever 27, the opposite end of which extends outwardly through a suitable opening in the housing, and is provided with a push button 28. Pivotally arranged on the bell crank 27 is a spring actuated pawl 29, the point of which is adapted to engage the teeth of the ratchet wheel 13. A corresponding bell crank lever 30 is pivotally mounted on the opposite pin 26, and is provided at its outer end with a push button 31, and is also provided with a spring actuated pawl 32, the point of which engages the teeth of the ratchet wheel 20. The ends of a spring 33, which is arranged on the pin 19, engage the bell crank levers 27 and 30,- and normally maintain the same at their,

teeth of the ratchet wheel 20, and extending forwardly fiomthe face of said detent is a pin 36. p

37 designates a detent pivotally mounted upon a pin 38, the point of which detent engages the teeth of the ratchet wheel 13; and said detent extends upwardly from the pin 38, and is provided on its upper end with 2. lug 39. One end'of a retractile coiled spring 40 is secured to the detent 37, the opposite end thereof being secured to the detent 35, which coiled spring normally maintains the points of'the detents against the toothed peripheries of the ratchet wheels 13 and 20. A releasing bar 41 is pivotally attached to the detent 37 at a point above the pivot pin 38, the opposite end of said bar being provided with a slot 42,

whichreceives the pin 36 on the detent 35. Project- Pivotally arranged upon a pin 45, in the upper left hand corner of the housing 1, is alever 46, which extends above the disks 16 and 23, and which lever is provided with a pair of depending fingers 47 and 48, which are adapted to enter respectivelythe notches 17 and 24. Mounted on the pin 45 and depending therefrom is a spring pressed latching dog 49, the point of which is positioned directly opposite the lug 39,, and; which point is adapted to engage in the notch 5 formed in the outside of the shackle 3 when said shackle is" closed. Seated in the dog 49 is a rearwardly projecting pin 50, which normally engages against the under, side of the lever 46.

Pivotally secured to the center of the lever 46 is a vertically disposed rod 51, which extends through a suitably formed opening in the topvv tocertain of the teeth on the ratchet wheels 13 and 20, 1

this setting of thedisks formingthe combinationby means of which the padlock is unlocked after the ratchet wheels and disks have been properly manipu lated as hereinafter described. J v

Assuming that the combination numberior the disk 16is 11, and the combination number for the disk 23 is 15, "said disks must be set on the sleeves l1 and 12 in such positions as that the notches 17 and 24 will be I brought into positions beneath the fingers 47 and .48 when the ratchet wheel 13 has been rotated the distance of eleventeeth, and the ratchet wheel 20 has been rotated the distance of fifteen teeth. To unlock the padlock so set, the'operator engages the push button 28 and presses the same inwardly eleven times, and

in so doing successivelyengag es eleven of the teeth on v the ratchet wheel 13 with the pawl 29,- and thus rotates the disk 16 so as to bring the notch 17 immediately be neath thefinger 47, This partial rotation stores power in the coiled spring 18, but said disk 16 and the ratchet wheel 13 are prevented fiom reverse movement by engagement of the point of the detent 37 with the teeth of .said ratchet wheel. The operator now engages the push button 31 and forces the same inwardly tfiiteen' times, thus bringingv the notch 24 directly oppositethe finger 48, during which movement power is stored in the'coiled spring 25 and the partsbeing prevented moving in a reverse direction by the engagement of the detent 35 with the teeth of the ratchet wheel. The, op-' erator now-engages the button 52 and forces the same downwardlyf 'which movement swings the lever 46 upon the pin 45 and causes the fingers 47 and '48 to ent'er the'coiresponding notches 17 and 24. This do'wnwardswingoi the lever 46 presses upon-the pin 50,'and

as a result the point of the locking dog 49 is moved out Thus the padlock is opened, and when the pressure of the finger on the button 52 isreleased, the lever 46 and dog. 49 will swing upwardly to their normal positions 4 Y .of the notch 5; and this end of the shackle now being free, swings upwardly owing to the pressure oi the spring 8 on the lug 7 on the opposite end of saidshackle.

owing to the pressure of the spring against the rear side;

Should a person unfamiliar of said dog, and the fingers 47 and'48 are carried upward out of the notches and 24. When the padlock is re-locked, the free end of the shackle is moved downwardly through the opening 4 until-the dog 49 ren-v gages in the notch 5, and this movement causes the lowerend of the shackle to engagethe lug 39jon the upper-end of the detent 37; and in so doing, shifts said detent upon the pin'38, disengaging the lower end of said detent from the ratchet wheel 13 and simultaneously shifting the releasing bar 41 to the right, which movement releases the lower end of the detent 35 from the ratchet wheel 20, and both of the ratchet wheelsare now free to rotate to their normal positions by the action of the coiled springs 18 and 25. Thus the. closing ofthe shackle to lock the padlock releasesthe com bination and causes all of the parts to reassume their normal positions.

When the free end of the shackle 3 moves upwardly in unlocking the padlock, the lug 39 will be engaged to rock the detent 37, but the combination will not be released owing to the fact that the fingers 47 and- 48 are engaged in the notches .17 and 24; and theslot 42pmvides for theslight lateral movement of the releasing bar 41 relative the pin 36. T. g v

with the combination attempt to open the padlock by manipulating the bell cranks 27 and 30 to rotate the disks, the fiat surfaces 14 and 21 on the disks 13 and 20 wil1,;after said disks have u been partially rotated, be brought opposite the points of the detents 37 and 35; and, as a result, no further rotation of the disks ispossibletowing to the non-engagement of the points of said detents on plain surfaces. 1f the ratchet wheels have been partially rotated during the time the padlock is locked, the combination'can be instantly reset or thrown back to its normal loo position by engaging the button 44 andshifting the release bar 41 to the right,which'movement disengages the points of the detents37 and 35 from the ratchet wheels; and the same, together with the disks 16 and 23, return to their normal positions.

It will be readily understood by persons familiar with the art how my. improved mechanism can be adapted for locks other than padlocks by merely changing the shape of the housing, and providing astraight locking boltin place of a shackle 3. I I

The combination in my improved-padlockis changed, as desired, by shifting the disks 16 and 23 upon their corresponding, sleeves 11 and 12-, .which movement changes the positions of the notches 17 and 24', and, as I a result, the push buttons 28 and 31 must be manipu lated a greater or less number of times corresponding to the notches 17 and 24, to bring said notches into posithus a readily adjustable combination mechanism is provided.

there are no exterior disks with numbers or letters to be noticed during the unlocking operation, and the combination can be easily and quickly changed.

tions where they will receive the fingers 47 and 48; and

1. A padlock, constructed with a housi ng, a shackle carried thereby, means a'rrangedon the interior of the housing for engaging one end of'the shapkle, a plurality of spring controlled disks arr ringed tor rotation on 'the interior of the housing, in the edges of which are formed notches, means whereby said disks are rotated, a lever for releasing the shackle engaging means, fingers integral with said lever and adapted to pass into the notches in the disks, and means arranged on the interior of the hous ing and operated from the exterior thereof for releasing the disks to'allow them to return to their normal positions after having been rotated; substantially as specified.

2. A padlock, constructed with a housing, a shackle carried the1'eby,lmeansarrangcd on the interior of the housing for engaging one end of the shackle, a plurality of sleeves arranged for rotation in the housing, ratchet wheels arranged on said sleeves, coiled springs arranged oni'the sleeves for rotating the same in a certain direction, detents engaging the teeth of the ratchet wheels for bold ing them against the rotating action of the coiled springs, means operated from the exterior of the housing for engaging said ratchet wheels to rotate the sleeves, disks carried by the sleeves, in the peripheries of which disks are formed notches, and means arranged on the-interior of the housing for actuating the shackle engaging means,

and a portion of which actuating means engages in the notches in the disks substantially as specified.

3. A padlock, constructed with a housing, a shackle carried thereby, an adjustable combination mechanism arranged on the interior of the housing, means operated from the exterior of the housing for actuating said combination mechanism, pawls arranged on the interior of the housing for engaging portions of the combination mechanism, one of which pawls is provided with a hook at one end for engaging thc shackle when closed, means operated from the exterior of the housing for releasing the shackle when the combination mechanism has been moved to the proper position, and means operated from the exterior of the housing for releasing the pawls after the shackle has been released.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

JOHN KRUSE. Witnesses:

M. P. SMITH, E. LfWALnAcm.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5765409 *Dec 6, 1996Jun 16, 1998Yang; Kuo-TsungPadlock having a large lock opening
US7010944 *Nov 29, 2004Mar 14, 2006Chien Chih ChiuPadlock having restoring mechanism
Cooperative ClassificationE05B37/10