US834917A - Keyless padlock. - Google Patents

Description

PATENTEDNOV. 6, 1906.

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C LIACI KEYLESS PADLOCK. APPLIoATIoN FILED FEB e 190e WHW/95555;

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Nc.,834,917. PATENTBD Nov. 6, 1906.

' C. LIAGI.

KEYLESS PADLOGK. APPLIOATIO FILED PEB. 6. 1906.

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UNITED STATES PATENT OEEIOE.

COSMO LlACI, OF NEW HAVEN, CONNECTICUT, ASSIGN OR OF ONE-FOURTH TO RAFFAELE GAGLEARDI, ONE-FOURTH TO LUIGI ,COLAVECC'HIQ' AND ONE-FOURTH TO EGIDIO EEERAINOLO, OE NEW HAVEN, iOON- N ECTICUT.

' No. 834,917. l

lKl-:YLEss PADLooK.

l Specification of Letters 'Patent Applioaton'iled February 6, 1906. Serial No. 299,807.

Patented Nov.`.6`, 1906. I

To all whom, it may concern:

v Beit known that I, COSMO LIAOI, acitizen of the United States, residing 'at New Haven, -in thecountyrof New Haven and State of Connecticut, have invented a new and useful Keyless Padlock,"of which the followingis a specication. A

The principal object'of the present invention is to provide a keyless padlock in which the shackle or similar member can be o cned only after the adjustment and manipu ation of a series of members, and, further, to so arrange the lock-casing that all of the parts will be concealed from view, the casing being solid and without projecting buttons, disks7 or other members. y

A further object of the invention is to provide a padlock in which the opening means are shielded and protected from exposure or accidental damage.

A still further object of the invention is to provide a padlock that cannot beopened by throwing back tumblers by a key or the like or by blows on the exterior of the padlockcasing.

" With these and other objects in view, as

will more fully hereinafter appear, the invention consists 1n certain novel features'of construction and arrangement of parts hereinafter fully described, illustrated in the Iaccompanying drawings, and particularly pointed out in the appended claims.

In the accompanying drawin s, Figure 1 is l a sectional elevation of a padloc constructed in accordance with the invention, the shackle being in locked position. Fig. 2 is a similar lview withthe shackle-locking bolt in position to be released by pressure. Fig. 3 is a face view of the front of the padlock withfthe shield in closed position. Fig. 4 is a transverse section of the padlock on the line 4 4 of Fig. 3.' Fig.` 5 is a view similar to Fig. 3, the shield being open and illustrated in section. Fig. 6 is a side elevation of the padlock with the shield in open position. Fig. 7 isa sectional elevation of a portion of the padlock on the line 7 7 of Fig. 1, Showing the shieldlocking mechanism. Fig. 8 is a perspective view of the shackle detached. Fig. 9 is a similar view of the shackle-locking bolt.

Similar numerals of reference are employed l which the shackle 14 is mounted.

to indicate corresponding parts throughout the several figures ofthe drawings.

The lock-casing pro er \is formed of two members 10 and 11, t at are connected together by' a number of securing-screws 12 and 13, the screw 13 forming also the 'pivot on he casing resembles inl general contour an ordinary lform of padlock,.and at the lower end of said casing is a downwardly-projecting flange 15, that projects below the body of the casing l and affords a space for the milled head 16 of a T dog-manipulating screw which may be turned for the purpose of locking or releasing the shackle-engaging bolt.

To the upper end of the section 10 of the casing is hinged a shield 17, having a marginal flange 18, within which the casing as a whole may be arran ed when the shield is closed, so that all of t e movable parts of the :lock are concealed and protected.

Both the pivoted and the lockin ends of the shackle 14 are provided with s oulders 19, and the shouldered ends are tapered or inclined in order that they may ride freely in one direction over the tapered ends 20 of a locking-bolt 21, the tapered locking vend of the shackle being extended to form a cam 22 for'a purpose hereinafter described.

The locking-bolt is in the form of a plate,

from the opposite sides of which extend the locking-tongues 20, and at the center of the plate is an opening for the reception of a guiding-pin 23, that is secured to the rear plate of the section 1() of the casing, and on opposite sides of the pin are coiled springs 24, that tendto thrust the plate outward and maintain its locking-tongues'in engagement with the shoulders 19 ofthe shackle. The upper .and lower portions of the plate are recessed, the upper recess extending around a lu 25, to which the shield is pivoted, while the ower recess receives a guiding-pin 26, that projects from the rear wall of the casing 10. y l

The casing 10 is further provided with a pin 28, on which are mounted two locking- I dogs 29, that may be moved to a position under theflocking-bolt 21 (shown in Fig. 1) or to a position free from the bolt, as shown in Fig. 2. The tails of these dogs are connected lOO by links to a screw 3l, which extends into a threaded opening formed in the milled nut 1-6, the inner end of said nut being provided with a groove that iits within an opening formed in the lower walll of the casing, said nut being held from endwise movement by collars 33, which are preferably formed integral with said nut.

When the shield is moved to open position, access maybe had to the nut 16, andthe latter may be turned in order to throw the dogs 29 below the locking-bolt 2l or may be turned in the contrary direction to move said dogs to a position free from the bolt,`as shown in Fig. 2,y excess movement of the dogs V being prevented by stop-pins 34. The dogs are held down in proper position by a helical spring 35, encircling the pin 28, and when said dogs are in the position shown in Fig. l it is impossible to depress the locking-bolt sufHciently to disengage the same from the shackle 14; but when the dogs are in the position shown in Fig. 2 the locking-plate may be pressed down to disengage the shackle. To manipulate the locking bolt or plate, a

button 37 is slid'ably mounted on the pin 23 and extends through an opening in the upper portion l1 of the casing, andby depressing this button after the dogs have been moved to the position shown in Fig. 2 the bolt may be moved downv and the shackle thrown open.v

It will be observed that to successfully open the lock it is necessary to iirst turn the nut 16 in the proper position andthen press downward on the button 37, and these operations must bek carriedl on in proper order or sequence, so that it-is extremely difi'icult for a person unfamiliar with the construction of the lock to open the same or to lock the same, it being observed that when the shackle is moved to open position the tail end of the pivot-lug of the shackle will'move over the lockingfbolt, and if the locking-dogs are then moved to the position shown in Fig. lit will be impossible to close the shackle, while if the parts are allowed to remain in the posi-y tion shown in Fig. `2 and the shackle moved to closedposition the locking-bolt will engage and holdthe same, so that it is not al-` ways necessary to manipulate the dogs 29.

It will be observed that both ends of the lshackle engage with the locking bolt or plate, so that when the shackle is subjected' to strain equalforce will be exerted on both ends of the locking-bolt andthe latter cannot be readily twisted or broken.

One of the principal features of the invention, however, resides in the employment of a shield which covers all of the operating parts ofthe lock, and when this shield is closed the lock presents no keyhole, buttons, disks, or other means which would suggest the manner of opening the lock. This shield serves to protect the movable parts when the locks are used in exposed positionas, for instance, switch-locks-and no person can successfully tamper with the lock without previous knowledge of the manner of opening the shield.

Arranged within the lock-casing are two studs 40 and 41, and to the latter is pivoted a spring-catch 42, one end of which is engaged by a spring 43, while the opposite end is provided with a cam 44, that is arranged to be engaged by the cam 22 at the free end of the hasp. The stud 40 carries a pin 45, arranged to extend through a slot 46 in the catch 42 for the purpose of guiding the latter and liniiting its play. The catch 42 is arranged to engage a keeper 47 in the forni of a stud projeeting from the inner face of the shield and arranged' to extend through a suitable opening 4S in the portion 11 of the lock-casing.

When the shield is moved down to the position shown in Figs. 3, 4, and 7, the keeper 47 passes through the opening 48 and is engaged by the catch 42, and the shield is heldin locked position until the shackle or bow 14 is pressed inward, whereupon the cam 22 at the free end of the shackle will engage the cam 44 and move the catch 42 to an extent sufficient to release the keeper 47, whereupon the shieldis thrown partly open by a spring 50, that is carried by the portion 11 of the casing.

I claim- 1. A padlock including a casing and a shackle, a shield within which a portion of the casing is inclosed, and a concealed shieldlocking means movable to releasevposition by inwardvpressure on the lockedjshackle.

2. The combination with a padlock including a casing and a shackle, of a pivotedshield within which a portion of the casing is arranged, and a concealed shield-locking means movable to release position by inwardpressure on the locked shackle.

3. The combination in a padlock, of'a cas ing, a shacklehaving a cam-shapedend, a shieldfor inclosing a portion of the casing, and a spring-catchlfor locking the shield'in closed position, the cam being arranged'to engage said catch andmove the saine to release position when inwardfpressure is exerted on the locked shackle.

4. In combination, a keyless padlock including a casing and a shackle, a shield pivotedto the casing and normally inclosing a portion of said' casing, manuallyfoperable lock-opening means also concealedby the shield, a spring tending to throw the shield to open position, a keeper projecting from the inner face of the shield and extend ing through an opening in said casing, a spring-actuated catch for engaging the keeper, means for pivotally supporting said catch within the casing, the shackle and the catch having interengaging cams to permit movement of the IOO IIO

ing, a shackle, a locking-bolt arranged to engage both ends ofthe shackle, a push-button arranged to effect bodily movement of the bolt and extending through an opening in the casing, and a shield normally concealing the button.

6. In a padlock, the combination with al casing, of a shackle, a spring-actuated manually-operable shackle-engaging member, a

pair of pivotally-mounted lockingfdogs, a screw, links connecting the screw to said dogs, and means for adjusting the screvr to move said dogs into and from alinement with said locking member.

7 The combination with a padlock, of a casing, a shackle, a spring-actuated manually-operable bolt for engaging the shackle, a pair of pivotally-mounted locking-dogs movable into and out of alinement with the bolt, a screw, links connecting the screw to the dogs, and a manually-operable nut mounted in the casing and engaging said screw.

8. In a padlock, the combination with a casing, having a front opening, of a shackle, a shackle-locking bolt, a spring tending to move the bolt to shackle-engaging position,

a button engaging said bolt and extendingthrough the casing-opening, a pair of pivotally-mounted dogs movable into and out of alinement with said bolt, a screw, means for connecting the dogs to the screw, and a manually-operable nut projecting from the casing and mounted on sald screw.

9. The combination with a padlock, of a casing, a pivotally-mounted shackle, both ends of lwhich are provided with lockingshoulders, a spring-actuated plate having'a pair of oppositely-directed arms arranged to simultaneously engage said shoulders, and an operating-button projecting from said plate.

In testimony that I claim the foregoing as my own I have hereto aixed my signature in the presence of two witnesses.

COSMO LIACI.

Witnesses:

MICHELE Riccio, ANTHONY SPINELLO.

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