US1464194A - Padlock - Google Patents

Description

Aug.` 7, 1923. l 1,464,194

D. BARTOLACELLI PADLOCK Patented Aug. 7, i923.

ll N l l DELINLDO BARTOLACELLI, F DALY CITY, CALIFORNA.

PADLOGK.

Application led .May 2,

To all ywhom 'it 'may concern:

Be it known that l, DnLrNno- BARTOLA- cnLLr, a subject oi' the King of Italy7 re` siding at Daly City, in the county of San Mateo and State oi' California, have invented new and useful Improvements in a`d-vr locks, of which the following is a specification.

llhis invention relates to aypadlock and has for its primary object to provide an improved construction; combination and arrangement of parts in a device of this character whereby the same may beseeurely; held in a lockedposition until released byv the particular key fitting it.

.Another object oi" this invention. is to provide an improved means which permits the locking ot the padlock without the insertion of the key therein, thereby preventing it from being unlocked with any device other than the particular key `made to lit the parts thereof.

@ther and further obj ects, including, cer-` tain features of construction will appear in the specilication and be pointed out in the appended claim, reference being had to the accompanying drawings which show the preferred embodiments of myy invention and in which* Fig. 1 is a side elevation oi' the padlock showing the same in a locked position; y

F ig. 2 is a side elevation of the key 'for the padlock;

Fig. 3 is a sectional view of the key in an operative position; n

Fig. l is an edge view ol? the key;

Fig. 5 is a detail sectional view of the padlock taken on the line 5--6 of Fig showing the same in a locked position with one of its sides removed; l

Fig. 6 is a view similar to Fi 5 taken on the line 5 6 of Fig. 8 showing the padlock in an unlocked position with one of its sides removed;

Fig. 7 is a vertical cross section on the line 7-7 `of Fig. 6;

Fig. 8 is a transverse section on the line 8-8 of Fig. 6;

Fig. 9 is a vertical transverse section on line 99 of Fig. 6.

ln the embodiment o f my invention shown onthe drawings, vthe main struc-ture consists of a casing 1, into which the working parts of the lock are embodied, and into two round holes 3, provided in the top thereof, the ends of the securing bow 2 are in- Serial No. 557,843.

serted. One end of securingbow 2 extends through the top of the casing 1 and inside thereo'r', and is encircledwithin the casingy by a spiral spring a, one end of which spring bears against the shoulder 5 of bow 2 and theother end of which bears against the upper surface of flange 6. Flange 6` is securely attached by screws or rivets to the inner surface of casing 1; and is provided with a circular hole into which one end of bow 2 is inserted. Flange 6 serves both as a pivot for the movement of bow 2, backward and forward and as a means for preventingI the movement of spring l downward on bow 2. Shoulder 5, which is secured on bow 2, enables the spiral spring 4l to project kbow 2 out of casing 1 when the same is unlocked, as well as a means. for preventing the bow 2 from being removed entirely from the top of the casing when the padlock is in an unlocked position. Secured loosely to the in side of casing l, just under the top thereof, by means of screws 11 and 12 is the locking means 7 one end of which is provided with a circular ring 8, which engages in slot il when the device is locked. rlhe other end of locking means 7 is provided with a flat llanged projection 9; which engages with slot 10 in bow 2 when the same is in a locked position. To the central portion of locking means 7 is attached a pin 13 which extends outwardly through slots in ktumblers 14. lhrough the end of pin13 is inserted a small cotter pin 13a which holds the tumblers :tirmly together and against the locking means 7. Screw 12 extends throughv one end `of tumblers 14, and serves as a pivot `for their movement when the key is beine operated against their inside surfaces. To one end of each. of the tumblers 14e is securely attached steel springs 15 which is also securely attached to the projection on casing l, which said steel springs tend to hold the tumblers downward when the key is not being operated against them. Attached to locking means 7 is one end ot' spiral wire spring 16, and to the top of casing 1 the other end thereof is attached. The said spring 16 tends at all times to hold the locking means 7 in a locked position, and only by exerting a pulling force thereon by attached to the 'inside of casing 1fby means of screws 18 and 19. Screw 192L extends through one end of tumblers 20, and tends to hold them firmly together as well as against the surface of locking means 17. The said screw 19 serves also as a pivot around which the said tumblers mo-ve when the key is being operated. To the central portion of locking means 17 is attached a pin 21 which extends outwardly through the slots' 22V in the center of tumblers 20. Through the end of pin 21 is inserted a small cotter pin 21a which holds the tumblers firmly together on pin 21. To the end of each of the tumblers 20 is securely attached a steel springr23 which is also secured to a projection on casing 1, and which, tends to hold the tumblers inwardly when the key is not being operated against them. rlhe end of locking means `17, nearest the bow 2 .is provided with a projection 2li which fits into slot' 25 on the end of bow 2, when in a locked position. To a projection on locking means 17 is attached a spiral wire spring 16 similar to `the other spiral wire spring 16, which functions in the same manner in connection with the locking means 17, as does spring 16 function with locking means 7. Through the center of casing 1 is a circular hole through which a circular key block 26 is inserted, and loosely fitted at its circumferential edges so as to provide for a ci reular motion inside of said casing 7. rThe said block extends through one side of the casing to 'the inside surface of the other side thereof, and moves freely therein. Through the center of key block 26, is a slot 27 which extends entirely through the same and into which the key 28 is inserted. Extending through theV sides of key block 26 and parallel to the slot 27 are apertures 30 through which the two unlocking' means 29 are permitted to project. The key 28 is provided with a hollow handle 31 through which a pin 32`is inserted. One end ofpin 32 is provided With a finger piece 83 and the other end thereof is provided with teeth which engage with! similar teeth on the inside end of unlocking means 29. Encircling the pin 32 is a spiral wire spring-84C which tends to hold the pin 32 upward, by reason of the fact that one end of the said spring bears against the shoulder of the pin 32 while the other end thereof bears against a projection on the inside of handle 31. The two unlocking means 29 are pivoted within the key 28 on. pins 35, and are securely held therein by said pins. The padlock casing is ma'de in two sections, one a main structure to which the various screws and securing pins are secured and the other, a cover, which entirely encases the working parts and holds Vthe key block firmly therein.

Having explained the various parts of construction I will now endeavor to explain the method in which they function in reference to each other.

Assuming that the padlock is in a locked position and that it is desired to be opened, the key 28 is inserted within the slot 27 of keyblock 26, and the finger piece 33 of said key is pressed toufard the lock. As the pin 32 moves inwardly the teeth thereof being engaged with the teeth of the unlocking means 29, the said unlocking means 29 mov ing on its pivots 35, move to al horizontal position through the apertures 30 of key block 26.- Vhile still holding the said finger piece in a downward position, the han-` dle 31 is turned toward the right. As the said handle is turned as aforesaid the key block 26 together with the unlocking means 29 are likewise turned until the eXtreme ends of said unlocking means 29 come in contact withtumblers 14 and 20; As the said unlocking means 29 continue to move as aforesaid, the said tumblers are'pressed outwardly and the said unlocking means 29 are allowed to come in contact with each of the two projections of locking means 7 and 17. By still turning the said handle 31 as aforesaid, the unlocking means 29 force the said locking means 7 and 17 away: from the slots 25, 1() and 10'L1 and allow the spiral spring 4 which presses against shoulder 5, to force the bow 2 upward in an unlocked position as shown in F ig. 6; After the said locking means 7 and 17 have been disengaged from' the said slots in bow 2, the key 28 maybe removed froml the key block 26, by releasing the finger piece 33. As the said finger piece 33 is released, the spiral spring 34 encircling pin 32, forces said pin outwardly and the engaged teeth in-unlock-ing lmeans 29 and at the end of pinf 32 arevturned untill the said unlocking means 29 are insidetlie key 2S, as shown in Fig. 2. vWhen it is desired to lock the device the bow 2is pressed inwardly until the circular ring 8 of the locking means 7 the flanged projection 9, of said locking means and the fianged projection 2a of locking means 17 comefin't'o contact respectively, with the slots 102.1() and 25 of the bow 2. As thesaidl projections and said ring come into contact with the. said slots of the bow 2, the spiral springs 16 as'- sociated with the locking means`7 and 17, pullingsaid locking means against thefsaid 'bow, ycause the said projectionsthereof to become firmly engaged with? the slotsin the bow 2, thus securely locking the device,l and` holding it in a locked position.

lVhile I have shown and described the preferred embodiment of my invention,ob viously various modifications may made within the spirit of the appended claim.

I claim: In a padlock, a casing, a' key block eX- tending through said casing, a slot-in said key block for the'insertion of a' key therein,

a pair of apertures in said key block for the emission of a pair of unlocking means of said key, two sets of tumbleis for the engagement of said unlocking means therewith, a pair of locking means associated with said tumble-rs, a bow, the ends of which enter within the said casng,three slots within said bow for' engagement with said pair of locking means, a spring attached to each locking means for pulling it into engagement with said bow, and a spiral spring encircling said bow, for forcing the slots thereof away from said locking means after disenga-gement therewith.

DELINDO BARTOLACELLI.

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