US2163311A - Padlock - Google Patents

Description

June 20, 1939. v F. E. RAYMOND 2,163,311

' PADLocx Filed March 2, 1957 j IN V EN TOR.

van@ WM A TTORNE YS.

Patented June 20, 1939 UNITED YSTATES PADLocK Frank E. Raymond, Stamford, Conn., ,assigner to The Yale & Towne Manufacturing Company, Stamford, Conn., a corporation -of Connecticut Application March 2, 1937 Serial No. 128,509

11 Claims.

This invention relates to a padlock of the type in which the shackle is locked by a spring.

In padlocks of this type, the spring usually has one or more legs which lock into notches Von the padlock shackle, the legs being spread apart by a key so as to Abe moved out of the notches in the shackle so that the shackle may vbe projected out of the padlock casing.

It is necessary lin a padlock of this type to provide means for limiting the movement of the shackle out of the casing, also to provide means for preventing reinsertion of the shackle vin a particular rotated position which will allow locking of the shackle With one of its legs not inthe padlock casing, My invention contributes to the art a novel and extremely simple means for limiting the movement of the shackle out ci the casing and for preventing the shackle from being locked when disaligned relatively to the casing. While I shall describe a specific for-rn of myjinvention, it should be understood that my contribution is basic, and that I should not ibe limited to the particular features of the construction herein shown and described.

I shall 'now refer to thedrawing wherein Fig. l is a section of my lock taken along lines i-i ci Fig, 2, Fig. 2 being an elevation of the padlock with one half of the casing removed. Fig...3 is a section along the lines 3-3 of Figj. Figs. l and 5 are drawn along the saine lines as Fig. 3 and show theparts in different positions. Fig. 6 is a side'vievv of the lock of Fig. 2 with part of the lfront half of the casing shown replaced, and with the shackle shown partially out of the casing and in a released position.

Referring now more particularly to the drawing, my padlock casing is formed of two parts il `andviZ, probably best shown in Fig. l, held together by four rivets I3 in a manner well understood by those skilled in the art. A U spring le is mounted transversely of thecasing, as is probably best shown in Fig. 1, and has a locking leg 'I5 and a limiting leg I-B, the function of which will be described later. The locking leg I5 ts into the notch i511. of a shackle I'I which has a nose I8 fitting into a chamber I9 formed between the two halves I I and I2 of the padlock casing.

The shackle Il extends downwardly and terminates in a shouldered portion 2G with which cooperates a spring 2| tending to move thehackles upwardly from its position of Fig. 2 to its position of Figs. 4 and 6, `when the shackle is vreleased by movement of the locking leg i5 of the spring I4. f

For operating the locking leg I5 of spring It, my casing has mounted a key guideway 22 having a series of notches 23, any one of which may house a ward 2li which cooperates with a key 25. The key 25 is `designed to escape the one or more 5 wards Zit which maybe used so that it may be rotated from its full line position of Fig. l to the dotted line position of Fig. 1, and in so doing, move the leg i5 oi spring I4 from its full line position in Fig. 1 to its dotted line position in Fig. l and out of the notch Ia of the shackle Il.

The shackle will then be propelled by spring 2l from its position of Fig. 3 to its position of Figs. 4 and 6. The leg I6 of the spring I4 is bent at 25 so that the key 25, in rotating, will not move the said Yleg I6. Therefore, -leg I6 Will be in a position to cooperate with the shouldered portion 2@ of the shackle Il, as is probably best shown in Fig. fi, for limiting the movement of the shackle il out of the padlock casing. 20

Referring now to Figs. 3, 4 and 5, it will be noticed Vthat the leg I6 of the spring I4 is oiset relatively to the .leg I 5,'the offset being in the direction of the .movement of the shackle I'i in and out of the padlock casmg. This oiiset relationship is particularly designed to prevent the reinsertion of the shackle Il into the casing in any position other than that shown in 'Figs 3 and 4. It will be noted .that if the shackle is moved downwardly from its position of Fig. 4, the notch ia will come opposite the spring I5, whereupon the spring I5 will drop inwardly into the notch ld and lock the shackle as shown in Fig. 3.

If the shackle vIl in Fig. 4 be rotated, however, so as to bring its nose i3 to the position of Fig. 5, .then lthe shoulder 2l of the shackle Il will be vimposed over leg I6 of the spring lil. In this position of the parts, it will be impossible to move Ythe shackle .downwardly into the casing. This, of course, preventsthe shackle from being locked by the'leg IE of the spring le .through entry of the spring into the notch Iiia. In this way, the leg Iii of.. the spring I 4, in addition to its function oi limiting the ejection oi the shackle from the padlock casing, also controls the reinsertion of the shackle into the casing, kand prevents the locking of the shackle in any position but a predetermined position.

It is readily appreciated that if the relation of the parts were not as herein shown, the shackle 50 could be rotated from the position of Fig. 4 to the position of Fig. 5 and then pushed downwardly, so that the spring leg I6 would thereafter lock theV shackle in the casing While the nose I3 of the Yshackle was out of the chamber I9. This would require a reopening of the lock, and in case the shackle having a pair of legs, a portion of said shackle cooperating with one of said legs when said shackle is in locked position in said casing whereby said leg retains said shackle in said locked position, said spring leg being vmovable by key operation out of cooperation with said shackle to permit movement of said shackle out of said padlock casing, and means on said shackle cooperable with the other leg of said spring as said shackle moves outwardly of said casing whereby to limit the movement of the shackle out of said padlock casing.

2. In a padlock of the class described, a padlock casing, a shackle, a U spring for locking said. shackle having a pair of substantially parallel legs, a portion of said shackle cooperating with one of said legs when said shackle is in locked position whereby said leg retains said shackle in said locked position, said spring leg being movable by key operation out of cooperation with said shackle to permit movement of said shackle out of said padlock casing, and means on said shackle cooperable with the other leg of said spring as said shackle moves outwardly of said casing whereby to limit the movement of the shackle out of said padlock casing.

3. In a padlock of the class described, a padlock casing, a shackle, a spring for locking said shackle having a pair of legs, a portion of said shackle cooperating with one of said legs when said shackle is in locked positionwhereby said leg restrains said shackle in said locked position, said spring leg cooperating with said shackle being movable by key operation to release said shackle for movement out of said padlock casing while the other spring leg remains iixed, and means on said shackle cooperable with said xed spring leg as said shackle moves outwardly of said casing to limit the movement of the shackle out of said padlock casing.

4. In a padlock of the class described, a padlock casing, a shackle, a U spring for locking said shackle having .a pair of substantially parallel legs, a portion of said shackle cooperating With one of said legs when said shackle is in locked position whereby said leg retains said shackle in said locked position, said spring leg cooperating with the said shackle being movable by key operation to release the shackle for movement out of said padlock casing, the other of said spring legs being deformedto avoid said key operation whereby to remain fixed, and a further portion of said shackle cooperable with said fixed spring leg to limit the movement of the shackle out of said padlock casing.

5. In a padlockof the class described, a padlock casing, a shackle, a spring for locking said shackle having a pair of legs, a portion of said shackle cooperating with one of said legs when said shackle is in locked position whereby said spring leg retains said shackle in said locked position, said spring leg being movable by key operation out of cooperation with said shackle toV when partially out of said casing, and means on said shackle cooperating with said other spring leg for preventing movement of said shackle back into locked position until said shackle is rotated to a predetermined aligned position relatively to said casing.

6. In a padlock of the class described, a padlock casing, a shackle having a toe and a heel, a spring for locking said shackle at its heel, a portion of the heelof said shackle cooperating with a portion of said spring when said shackle vis in locked position whereby said spring retains said shackle in said locked position, said spring portion being movable by key operation out of cooperation with said shackle heel portion to permit'releasing movement of said shackle out of said casing, said shackle being freely rotatable when partially out of said casing, and mea-ns on said shackle heel cooperable with another portion of said spring for preventing movement of said shackle back into locked position until said shackle is rotated to a predetermined aligned position relatively to said casing.

7. In a padlock of the class described, a padlock casing, a shackle, a U spring for locking said shackle, a notched portion of said shackle cooperating with one leg of said U spring for locking said shackle in said casing, said spring leg being movable by key action out of the notch in said shackle to permit sliding of said shackle out of said casing while said spring leg bears frictionally on said shackle ready to jump into said notch when said shackle is moved back into said casing, the other leg of said U spring being adapted to rub on the other side of the shackle as said shackle moves in and out of said padlock, said other spring leg being offset in a direction vparallel to the shackle movement relatively to said rst spring leg, and a surface on said shackle cooperable with said oiset spring leg to prevent sliding of said shackle into locked position in said casing until said shackle is properly aligned relatively to said casing and said rst spring leg.

8. In a padlock of the class described, a padlock casing, a shackle, a U spring for locking said shackle, a notched portion of said shackle cooperating with one leg of said U spring for locking said shackle in said casing, said spring leg being movable by key action out of the notch in said shackle to permit sliding of said shackle out of said casing while said spring leg bears frictionally on said shackle ready to jump into said notch when said shackle is moved back into said casing, means on said shackle cooperable with the other leg of said U spring for limiting the movement of said shackle out of said casing, said other spring leg being oiset in a direction parallel to the shackle movement relatively to said ilrst spring leg, and a surface on said shackle cooperable with said offset spring leg to prevent sliding of said shackle into locked position in said'casing until said shackle is properly aligned Y relatively to said casing and said rst spring leg.

9. In a padlock of the class described, a padlock casing, a shackle, a U spring for locking said shackle, a notched portion of said shackle cooperating with one leg of said U spring for locking said shackle in said casing, said spring leg being movable by key action out of the notch in said shackle to permit sliding of said shackle out of said casing while said spring leg bears frictionally on said shackle ready to jump into said notch when said shackle is moved back into said casing, the other leg of said U spring being adapted to rub on the other side of the shackle, the end of the shackle cooperating with said other spring leg to limit the movement of said shackle out of said casing, the said shackle being rotatable when out of the casing a predetermined distance, and means on said shackle cooperable with said other spring leg to prevent reinsertion of said shackle except when its locking notch is aligned relatively to said rst spring leg.

10. In a padlock of the class described, a padlock casing, a shackle, a U spring for locking said shackle, a notched portion of said shackle cooperating With one leg of said U spring for locking said shackle in said casing, said spring leg being movable by key action out of the notch in said shackle to permit sliding of said shackle out of said casing while said spring leg bears frictionally on said shackle ready to jump into said notch when said shackle is moved back into said casing, the other leg of said U spring being adapted to rub on the other side of the shackle as said shackle moves in and out of said padlock, the end of the shackle cooperating with said other spring leg to limit the movement of said shackle out of said casing, the said shackle being rotatable when out of the casing a predetermined distance, said other spring leg being oiiset in a direction parallel to the shackle movement relatively to said first spring leg, and a surface on said shackle cooperable with said offset spring leg to prevent sliding of said shackle into locked position in said casing until said shackle is properly aligned relatively to said casing and said first spring leg.

11. In a padlock of the class described, a padlock casing, a shackle, a U spring having a pair of substantially parallel legs, one of which ts into a locking notch of said shackle for locking said shackle against movement outwardly of said casing, a shouldered portion on said shackle on the side thereof in which said locking notch is formed and below said locking notch, a limiting notch on the side of said shackle opposite said locking notch, the other leg of said spring resting normally in said limiting notch tolimit the outward movement of the shackle when it is released by said rst leg, said shackle being free for rotation when out of said casing an extent allowed by said other spring leg, said other spring leg cooperating with said shouldered portion to prevent the insertion of the shackle fully into said casing when said shouldered portion is opposite said other spring leg.

FRANK E. RAYMOND.

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