US 1155405 A
Description (OCR text may contain errors)
APPLICATION HLED MAR. 2, 1915.
Patented Oct. 5, 1915.
WITNESSES INVENTOR 7W /U/ l f" ff/ TToRNEYs,
ccLUMnll. PLANOURM'H u0..wASHxNGToN. n. C,
Ins 'raars-af' eric.
PASQALE DANGELO, oF NEWARK, New JERSEY.
Specification of Letters Patent.
rat-entes oet; 5, isis.
. Appiicationnled March 2, 1915. semaine. 11,452.
` particularly -to that class of locks which cannot be unlocked by inserting and turning a key of the proper fornn'butit is also necessary that the key after linsertion be manipulated in a 'predetermined manner in order to enable the 'unlocking action tofbe accomplished. j
Theobject of the present invention is the improvement of locks of this character in numerous important respects, and withfthis and related objects in View, my` invention consists in the parts, improvements and combinations herein set forth and claimed.v
In the ,accompanying drawing, for the purpose of making myinvention clearly un` der'stood, I have shown certain forms of padlccks in which said invention may be utilized, but it is to be understood that the invention 'may be applied to locks of various forms as well as to the form or forms illustrated. fo In the said drawing forming a part of my specification, and in which theJ same reference numerals are uniformlyl applied to designate the sa'me parts throughout, Fig'- ure 1 isa front view of one form of padlock in which my invention' 4may be embodied, the front cover plate of the casing being removed to better illustrate the interior of the lock. Fig. 2 isa cross-sectional view on the line 2 2, Fig. 1, the casing cover being shown in place and akey being shown in this view in dotted lines. ig. 3 isa front view of a portion of the casing cover illustrating the kev-hole and adjacent indicating marks. Fig. l is a cross-sectional view on the line Fig. l, with the'casing cover in place. Fig. 5 is a view similar to Fig. I but illustratingamoditied form, and Fi g. 6 is a fragmentary view also similar to Fig. l and illustrating a further modiication. f
The rear wall "of the padlock` casing is designated. by the" numerata@ andthe' `'simile walls by the numeral l1. Studs 12 kare pr0- vided which enter openings I3 in the front wallli of the casing` and may be riveted over, as is customary. 1
The locking shackle' l5 slides in Openings 16 in the casingV wall 11 and has one long arm 17 and one shorter arm 18, the latter being designed to extend beyond theV casing when the' shackle is projected, permittingy the shackle to be inserted in a hasp or the like, in accordance with Vusual practice. spring 19,- preferably coiled about the vinner end of the longer arm 17 and interposed between the bracket '20 on which the longer arm 17 rests when the shackle is retracted, and a pin or other stop member 2l on the arm 17 serve to project the shackle outwardly when `not lockedy invretracted pos tion.
The arms 17 and 18 are provided with locking recesses 22 and 23, respectively, and locking levers are provided to engage with such recesses, the lever 24# being pivoted yinthe casing at 25' and having a dog 26 at or near one end to'enter the recess 22, and having its ,opposite end extendedto form a nose 27, and the lever 28 pivoted in the casing at 29 having a dog 30 at or near one end to enter the locking recess 23 and having its other end formedinto a preferablv curved extension 31. Spring means for urging both of the locking levers 'into locking position are provided, and the same may conven. ientlv take the form of a spring 32 interposed between the two levers and 28 and held in yplace by studs 33 and 3i entering the central, axial opening in the coil spring 32.*r
When the levers are to be operated separatelv and successively to unlock the shackle, as is'the. case with the construction shown in Figs.` l. 2 and 4. means are provided for releasably retaining one of the levers in non-locking position. In the form shown the lever which may be so retained is that marked 28, and the retaining means comprises a pivoted arm'35 which forms a catch and is pivoted in the casing at 36 and has a notch 37 for engaging a stud 38 on,
Said. pin 2l may also serve as a stop to limit the outward movementv of the sov l Vl() H Y.behind the disk 42 on the pintle tending to force it outwardlyagainst the stop lshoulder secured in the pivoted arm 85 and pressing under the shoulder on the lever 28. A
lug 4,1 may be provided in the casing wall 10 to limit the movement of the lever 28 under theaction offt-he spring `82. Y
Key controlled means are provided for operating the levers 24 and 28 and the pivoted arm 35 and preferably comprise a disk 42 mounted for rotation and Vbodily sliding movement on a pintle 43, the spring 44 placed 45. With such arrangement onpushing with the key the disk can be operated inV a plane backY ofthe plane normally occupied by it.
@n the rearward face of the disk 42 is ai projection 46 having its outer edge preferably flushwith the preferably circular periphery of 'thedisk 42 and extending:Y
Vilhen the diskV 42 is in forward Vposition' restingragainst the shoulder 45 under the intiueneeof the spring 44, such disk maybe turned freely without effecting any movement of the locking elements. Then it is pushed inagainst the spring'44 and rotated,`
however, the stud 46 thereon may comev into contact with the locking elements, including the levers V24' and 28 kand the catch 35, and ify the disk 42 Lis turned through ay proper vdistance and in a proper sequence, accord-A ing to the particular arrangement andY dis# position of the various parts, it may unlock tlierlever'28 from the arm 18 where sucharm may be held by the pivoted arm 35 and Vmay also operate the lever 24 by coming into contact withjthe end 27 thereof, whereupon the arm 17 willk likewise be'unlocked, per? mitting the shacklev15 to be moved out-v wardly under the influence of the spring 19. Means iXedto the casing may be provided to"present]free rotation of the disk 42 when pushed hack by the projection 46 coming in,y
contactltherewith, and in the form shown a lug 4Z-is fixed to the casing wall 10 for this purpose and arranged substantially midway betweenV the 'inner ends of the levers 24 and'.v 28.
V*With such arrangementV it will be L seen that as the disk 42 Ais rotated sothat the*V projection 46 is opposite vthe'space 48 between the lug 47 .Y and the end 31 of thelever 28, and the disk is then pushed in against the spring '44 andthen rotatedin a clockwise'y direction as the4 parts are shown in Fig. 1,'the projection 46y will push the end 31 of thelever'28' to the left, thereby withdrawing the dog Sfifrom the recess 2,3 in the arm 18 andzunlocking the arm 18 ofthe shackle 15, and the lever 28 will beheld in unlocked position'bythe pivo-ted arm 35, the' stud 38 entering' thevcuteout 37 and the position of the vparts after-such movement being as indi-y cated by dotted linesion Fig. V1.
If the rotation of the disk 42 is continued in clock-wise direction the disk still being pushed in against the spring 44, it will be seen that the stud 46'will engagethe pivoted arm 35 and lift the same, thus freeing the lever 28 from' such catch and permitting it again to come 1n .locking engagement with the arm 18. If, however, the disk 42 is pervmitted to be pushed out by the spring 44 and is turned in either direction after un#` y locking'the lever "28 from the arm 18 untill the stud 46 occupies the space 49, in which position .it is illustrated in Fig. 1, and the 'i disk 42 is then pushed in andturned slightly in the 'clock-wise direction, it will make contact 'withfthe nose 27 of the lever 24 and turn said'lever in a manner to withdraw the dog 26'from the recess 22, thus completing they unlocking operation and permittingvthe shackle 15 vto Ybe pushedv outward by the spring 19. The )particular arrangement shown, of course, isf by way of example only, The levers and stops 'on' the casing and the'studon the disk may be arranged in dierent ways to makepossible ay large variety of manipulations in different locks`v all the same in principle but differing somewhat 1n form. With such arrangement, of
course, the lever 2S being held `out of lock-V ing position whenth'e shackle'l is pushed back in place, the lever 24 only kwill have'a locking engagement therewith, .and it necessary to turn the disk 42 into such posiVV tion as will free *the pivotedY arm 35, thus completing the locking of the second arm to' v10o I by the bevel 18fprovided on the'end Vof the Y shorter shackle arm 18.;V
Vrlphe disk 42 and the keyopening in the cover plate 14 are preferably 'formed in such manner that a keyK of distinctiveform isV required for insertion into the lock. In the form shown the disk 42 is provided with concentric ribs 50 and v51onits forward Y face, lwhich require that the key Vshall havel slots conforming thereto, and the cover plate 14 is provided with a rotatable member 53v whose .center isv in linewith'the centerof the disk 42 and directly infront thereof,
and such member is provided with slots54 and 55 and an interior central bridge wall 56'.' The cover plate is also providedwithV a slot 57 which may be brought into line with aresansY one of the slots 54 or 55 and form ane'Xtension thereof, thus necessitating that the key shall have a central slot4 for straddling the bridge wall 56. Meansfon the disk 42 to cause rotation of the latter by contact of the key therewith are provided, and the same may consist of a stud 58 ya'rrang'edibetween the ribs 50 and 51.
Markings' are preferably 'prbvideu )on f are cover plate 14 by reference .whereto the 'turn` r` when pushed inwardly and turned, thesey studs will engage and unlock the two levers 24 and 28 simultaneously. A stop piece as 47 may be arranged on the casing wall to insure with greater 'certainty that the lock cannot be opened except by those knowing in which position the key must be before the disk is pushed back and turned. Or, if it is desired to put out a still simpler and cheaper form of lock, such fixed stop means 47 may be entirely dispensed'with, as shown in Fig. 6 where the studs 60 and 61 on the disk 42 directly engage the levers 24 and 28 when in correct position, and there is no such stop as 47 01147 to interfere with the rotation of the disk 42 when pushed inwardly.
It will be seen that a lock constructed in accordance with my invention has numerous advantages. The shacklevis held by locking dogs on each arm, and is therefore able toresist strains which would be fatal to a lock having a locking dog or dogs applied to but one arm of the shackle, the mere possession of the key will not enable the unlocking, except by those who know the structure, the structure is simple and strong, and a lock involvthe invention can be made and sold at low cost.
1t is to be understood that my invention is as broad as my claims and that various changes may be resorted to from the precise structures I have shown and described, without departing from or sacrificing the advantages of my invention'.
Having thus described my invention, 1 claim:
l. In a lock, a casing, a shackle adapted to slide in the casing, locking levers adapted to engage rand lock each of the `two shackle arms, and a catch for holding one of the levers out of locking position. Y
a in a lock, a Casing, a Shackiegaaapted 'es to slide inthe casing, locking leversadapted y to engage each of the two yarmsgof vthe y shackle and lock the same, a catch forhold-v ing one of the locking levers out of lock ing position, and key operated means for actuating said locking levers and catch. Y
3. 1n a lock, a casing, a shackle adapted n to slideiii the casing, locking" leversada'pted tb engage and lock each of the arms of the shackle, a catch for holding vone of the locking levers out of locking position, and
rotatable key operated means normally free to be rotated freely but movable into a position to actuate said levers and catch. Y.
4. 1n ak lock, a casing, a shackle adapted to slide in the casing, a leverl pivoted in the casing and adapted at one end to engage and llock one arm of the shackle, a second lever pivoted in the casing and adapted at one end to engage and lock the other arm of the shackle, a catch for holding rone of the locking levers out of locking position,
4and key operated means adapted to engage the two levers at theends thereof opposite the locking ends and also adapted to engage and move said catch to free the locking lever engaged thereby. p
5. In a lock, a casing, a shackle adapted to slide therein, a pivoted lever adapted at one end to engage and lock one arm of said shackle, a second pivoted lever adapted at one end to engage and lock the second arm of the shackle, each of said levers being provided with extensions at the ends opposite the locking ends, a key operated disk,'a pintle in said casing on which said disk is mounted to rotate and slide bodily, and a spring for holding said rdisk outwardly on said pintle, said pintle beingnormally freely rotatable but -upon being pushedy against said spring and rotated being adapted to engage either or both of the lever extensions.
6. 1n a lock, a casing, a shackle slidable in the casing, levers adapted to engage and lock each of the shackle arms in said casing and arranged near the rear wall thereof, a pintle in said casing, a key operated disk iooV rotatable upon said pintle andhaving a spring interposed to thrust it away from the rear casing wall, said disk being normally freely rotatable but adapted to` engage theends of said locking levers opposite the locking ends and actuate the same when said disk is pushed back and rotated. 7. 1n a lock, a casing, a shackle adapted to slide in the casing, separated locking levers for each of the arms of the shackle, and a key operated disk slidably and rotatably mounted in said casing'and having a stud on its back to engage the locking levers and `provided with concentric ribs on its forward ace.
8. In a leek, a casing, a shackle adapted to he slid into and Withdrawn from the cas- In testimony that I elaim the foregoing, I Aingf sepzuaited looking levers for each Of hereto set my hand, this 27th day of Febthe'aims of the shackle, and a key operatedA ruary, 1915. disk rotatably mounted in the casing and Dhm/'inge stud on itsback to engage the Witnesses: A loekinglevers, the disk having concentric M. A. JOHNSON,
V:ribs onits forwardface.V v Y, H.TRAUTVETTER.'-
Copies of thisnatentmy luie'ontainedl foxi'ive eents eaoh, addressing the f Commissione of IaAnncu. y 1 Washington, 1h03.'