US1034998A - Padlock. - Google Patents

Description

J. A. GIESE.

PADLOGK.

APPLIGATION FILED ma. 1e, 1911.

1,034,998, Patented Aug. 6, 1912.

- IUNITILED STATES 1iurrrin'fr OFFICE.

JAMES A. GIESE, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS & WESTLAKE lloireecs.

COMPANY, A CORPORATION OF ILLINOIS.

PADLOCK.

Patented Aug. 6, 1912.

Application filed December 176, 1911. Serial No. 666,238.

lTaall whom it may concern:

Be it known that 1, JAMES A. Gmsr., a citizen of the United States, and resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Padlocks, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to padlocks and has kfor its object to provide a lock of this character which shall be more reliable in operation and of improved construction and which shall permit of an increased number of deviations in the form of key required to open the same.

The invention is exemplified in the structure to be hereinafter described and which is illustrated in the accompanying drawings, in which- Figure 1 is a plan view of a padlock embodying the features of improvement provided by the invention, the front wall of the lock casing being removed to show the internal construction; Fig. 2 is similar to Fig. 1 but shows the parts of the lock in a different position; Fig. 3 is also similar to Fig. 1 but illustrates the lock with some of j the operative parts of the mechanism removed; Figs. 4 and 5 are sectional views taken on the lines 4-4 and 5-5 respectively of Fig. 1; Figs. 6 and 7 are perspective views showing details of the operative mechanism of the padlock.

The invention is illustrated as being embodiedin a padlock having a chambered casing 10 of usual shape and a shackle 11 which is pivoted to the walls of the casing at 12. The point of the shackle 11 is adapted to enter the chamber of the casing through an opening 14 in an end wall of the same and has the usual bolt receiving aperture 13 adjacent its end. f

In carrying out the invention a jointed bolt is preferably provided for securing the end of the shackle within the chamberof the casing 10. As shown, this bolt comprises a pivoted member 15 and a longitudinally slidable member 16 both housed within the chamber of the casing 10. The pivoted member 15 swings upon a stationary pivot 17 and is provided with a hook 18 upon one of its ends, which hook enters the aperture 13 in the end of the shackle when the lock is closed. The pivoted member 15 and sliding member 16 are operatively connected whereby the sliding of the member 16 turns the member 15 upon its pivot. .Arsy shown, this connection takes Vthe form of a pin 19 which projects from a side -face of the member 16 and 4moves in a slotted opening 20 in the member 15. The bolt members are normally retained in position for securing the end of the shackle by means 'of a spring 21. This spring is preferably coiled about the pivot 17 and has its opposite ends reacting respectively upon a stationary stop 22 and upon the pin 19.

The sliding bolt member 16 is provided with a shoulder as 23, (Figs. 3 and 7) for engagement by the bit 24 of a key 25 for moving the bolt members against the effort of the spring 21, to open the lock. Tumblers, as 26, which may be of any well known construction and of which any usual number may be used, are provided to prevent the movement of the bolt members except by the use of a properly formed key. As shown, the tumblers are provided with slotted recesses 27 adapted to receive a stud 28 on the bolt member 16 when brought into register with said stud bythe bit of the key in the usual way. Provision is also made for securing the bolt members 15, 16 in open position, when the shackle 11 has been released. As shown, a bridge plate 29 is provided for this purpose. This bridge plate swings upon a stationary pivot 30 and normally bears against the end of the shackle 11 to swing the shackle upon the pivot 12 when the bolt members are released. To this end, the bridge plate 29 is moved in one direction by a spring, as 31. This spring may take the form usually employed for the operation of lock tumblers, and as shown has one end fixed in an end of the bridge plate 29 adjacent the pivot 30, as at 32, the other end of the spring being adapted to react against a fixed part of the lock casing, as the shoulder 33, to raise the bridge plate.

The swinging of the bridge plate 29 about the pivot 30 is preferably limited in each direction, as by providing the free end of the same with a slotted opening 311 through which the pivot 17 extends. A shoulder 35 formed on the bridge plate 29 serves as a stop for holding the bolt members 15, 16 in member'l';A The bridgeplate 29 also.

serve to prevent the opening of the lock eX- cept by a properly formed key, thereby addr ing to the security'of the lock. As shown,

' the lower edgeV ot the, bridge plate. is extendn edl toward'the key to such an extent that ity will only be cleared by the bit 241' du-ringtlie turning of the key to open the lock, whenl Y thel bit beerecessed, as' indicated at 3'?.

In the' operation of the lock the key 25 is inserted' and rotated` in` the usual4 way. v The bit 24,. being properlylrecessed: to clear the bridge plate 29 and tor raise the tumblers 26 in proper amounts toxbring their recesses, as 27, intol-ine with; the stud 2 8- onk the bolt member 16,. the bolt members 15, '16,. are moved against the effort of' the spring 21 by the' engagement of the bit 24 with they shoulder 23. Upon the Withdrawal of the hooked end 18 of the bolt member 15. from the aperture 13 in the pointof the shackle, the end. of the shackle 1s thrownout `of the chamber of the lock casing by theraisingv ot the bridge plate through the pressure exerted by the spring 3.1. This. raising of the bridge plate 29 brings: the shoulder 35 behind the stud' 3 6, thus holding the. bolt members, 115, 16 inopen position- Inclosingfthe. lock, the bridge plate 29 issmoved downwardly tol release the shoulder 35 trom the stud: 36 by thel engagement. ofl the point of the shackle with the upper edge of' the bridge plate, thereby permitting the spring 21 to throw the hooked. end 180i thel bolt member 15 into the bolt receiving aperture 13 of the shackle.

The construction provides a lock of; reliable operation and as the bridge plate 29 prevents. the opening ot the lock except by a properly formed key, it, in efect, serves as an additional tumblery andY thereforeladds to the security with'nwhiclr the'parlts; of* the lock .are held in closed position.

IA claim as4 my .invention-. i K 1.. yIna padlock, in combin"tion,'a vshackle a sliding rnember'having a lateral stu.d,` an E-oscillatable plate having a shoulder enga if 'ablewith the stud when the sliding memb 'into Vposition for engagement withtlie the-plate*extending into the path o to its spring by theelosin'g' of the shacklei'f' 55 2;` Ima padlock, incombinatiomja sharekle, a- Vjointed boltcomprisingf operatively con the shackle and; the'lsliiding .member` having a shoulder. for-.engagement by' the-key', A a: tumbler cooperatingV witlr the nsliding bolt member, a stud on the lslidingfbolt memable into the pa-tlr of th'ef` said studfor the opening of the lock' and a spring-iurging the bridge platey against theendiI oli thevshackle'.

a; shackle pivoted to7 thefcasing-its: free end being apertured and being arranged1 tos enter they casing,. a 'spring' advanced; ilatch' ipivoftedtureofzthe shackle,h a key controlled sli e member attached to the latch and having a' f' I: lug, a plate pivot'edto thecasingf bearing: against the end of the shackle'whens such end. is within; the.l casing; andhavinga slnioful'-V der for' engagement by"the"lug when the spring" urgingthepivote'd plate toward the 80 shackle end.' Y f Witnesses:

f CHARLES-ABT., GILLsoN M. VQKL'M'CHER. f

Copies kofthisY patent:I may be obtained; for ve cents; each, 'by addressing;therv lillommissio'uelj ofllracenter;VVV A y,

, Washington, Di U. y y f Y 5o is. retracted, and a spring urging y,

shackle end and being movable in opposition nectedl pivoted and sliding. members-,f the pivoted bolt member beingenga'geable with ber, va bridge platehaving a shoulder4 mov- 3.. a padlock, in combination, aoasiing, l v

to: thev casing'aiid engageablewith: the aper-v A* slid'ing'plate is in'fretraeted, position?, and? a r i JAMES" AQGrEsEiQ

Images