US1527936A - Padlock - Google Patents

Description

Feb. 24. 19.25. 1,527,936

. w; R. S WIIFT PADLOCK Filed Aug. 1923 Patented Feb. 2 4, 1925 UNITED STATES PATENT OFFICE.

WILLIAM R. SWIFT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO MILLER LOCK COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- 'VANIA.

To all whom it may concern:

Be it known that I, WILLIAM R. SWIFT, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Padlocks, of which the following is a specification.

The object of my invention is to provide means for stopping the pivoted shackle of a padlock, as it swings laterally from the open to the closed position, insuring the proper alignment of the short leg of the shackle with the opening in the lock casing. In the accompanying drawing,

Fig. 1 is a longitudinal sectional elevation of a pad lock taken on the line 11, Fig. 2, the one side being removed to illustrate my invention;

Fig. 2 is a vertical sectional view on the line 2-2, Fig. 1;

Fig. 3 is a plan view partly broken away, showing the shackle in the closed position;

Fig. 4 is a view similar to Fig. 3, showing the shackle in the open position;

Fig. 5 is a detached perspective view of a portion of the casing; and

Figs. 6 and 7 are perspective views of the shackle of the lock.

1 is the casing of a pad lock made in two sections 2 and 3, in the present instance, secured together by rivets 4. The locking mechanism, although illustrated, forms no part of the invention. 5 is a U-shaped shackle having a long leg 6 and a short leg 7. The long leg 6 of the shackle is mounted in bearings 8 formed on the two parts of the casing. The short leg 7 extends into the opening 9 in the casing when in the closed position, as shown in Figs 1 and 3, but the shackle can be turned to the open position, as shown in Fig. 4.

Notches l0 are milled in the long leg 6 of the shackle, as shown in Figs. 2, 6 and 7, to accommodate a locking bolt 20, and a notch 11 is cut at a point near the end of the leg to receive one end of a spring 12 which projects the shackle when disengaged by the bolt of the locking mechanism. This spring also tends to turn the shackle to the open position, Fig. 4.

Application filed August 1, 1923.

PADLOGK. I t i Serial No. 655,068.

A notch 13 is milled in the long leg of the shackle, and is of a depth about onehalf of the diameter of the shackle. The inner wall of the notch is straight as shown.

Projecting from one-half 2 of the casing 1 is a rib 14, recessed at 15 to form a stop 16. The stop portion of the rib 14 extends into the notch 13 of the shackle, as shown in Figs. 3 and 4, and acts as a stop when the shackle is moved to the closed position as in Fig. 3 or to the open position as in Fig. 4, limiting the movement of the shackle and insuring its alignment with the opening inthe casing.

It is essential in pad locks of this type to stop the shackle in alignment with the hole in the casing, so that the lock can be closed without having to shift the shackle until it is in alignment withthe hole. This invention dispenses with all exterior stops.

The slot 13 can be milled at the same time as the notches 10 and 11, and, as the rib 14 is cast integral with the section 2 of the casing, there is practically no extra cost in manufacturing the lock with the improved stops for'the shackle.

I claim:

1. The combination in a padlock, of a two part casing; a pivoted shackle having a long leg and a short leg; a bearing in each part of the casing in which the long leg of the shackle is pivoted, the casing having an opening for the short leg of the shackle, the long leg having a notch therein; and a stop integral with the casing, said stop extending into the notch to limit the rotating movement of the shackle.

2. The combination in apad lock, of a casing made in two sections; a shackle, hav-' ing a long leg and a short leg; bearings in the casing for the long leg of the shackle, said leg having a notch therein; and a rib on one section recessed to receive the portion of the shackle having the notch therein and forming a stop for the shackle when moved to the closed position and, when moved to the open position.

WI IAM SWI T.

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