US618561A

US618561A - Island

Info

Publication number: US618561A
Authority: US
Publication date: 1899-01-31
Anticipated expiration: 1916-01-31

Description

No. 6|8,56I. Patented lan. 3|, |895.

. J. L. CRANDALL'.

P A-D L 0 C K (Application led June 1 3, 1898.)

(No M'odeL') Wfl-M5555:

UNITED STATES PATENT OFFICE.

JOSEPH L. ORANDALL, OF PROVIDEOE, RHODE ISLAND, ASSIGNOR TO JOSEPH L. @RANDALL c CO., OF SAME PLACE.

PAD LOCK.

SPECIFICATION forming part of Letters Patent No. 618,561, dated January 31, 1899.

Application filed T 1111 131 1893- To all whom it may concern.'

Be it known that I, J osEPH L. CEANDALL, of Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Padlocks; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specication.

The class of ornamental padlocks used -as pendants or charms on bracelets made of precious metal or inferior metal plated with precious metal on the exposed surface have heretofore been made up of a back plate having a marginal rim, to which the hasp and locking-spring were secured, and a front plate secured to the marginal rim by solder. In this construction the heat used in soldering softens the metal, particularly when light thin sheet metal is used, and produces a sightly but Weak padlock, liable to get out of order and lost by unlocking.

The object of this invention is to produce a substantial padlock without the use of solder; and to this end the invention consists in the peculiar and novel construction whereby a plate of inferior metal provided with marginal rim-sections and the posts forming the lock is secured Within the case by turning the rim edge over the front plate, as will be more fully set forth hereinafter.

Figure l is a front view, and Fig. 2 a side View, of the padlock. Fig. 3 is a front View of the padlock as it appears before the front plate is secured, showing the spring and hasp in the locked-position in solid lines and in the open position in broken lines. Fig. 4 is a transverse sectional View of the padlock. Fig. 5 is a perspective View of the skeleton plate, and Fig. 6 a plan view of the blank for the skeleton plate.

In the drawings, a indicates the front plate provided with the keyhole b; c, the hasp; d, the marginal rim drawn up in suitable dies from the back plate e; f, a plate of inferior metal provided with the marginal rim-sections f f', which may be of the width shown in Fig. 5, or of greater width, as indicated in broken lines in Fig. 6, the rim-sectionf2, and the section f3, and also provided with the stop f4, the

Serial No. 683,257. (No model.)

post f5, forming the pivotal support for the hasp c, and the keypost f6. The plate f when drawn up and provided with the posts, as shown in Fig. 5, forms the substantial skeleton frame of the lock. W'hen placed into the part of the case formed by the back c and rirn CZ, it closely its the same. The hasp c is now placed on the post f 5, the margin d being provided with openings, through which the ends of the hasp extend. The spring g is now placed into the lock, so that the lower part of the same extends between the rim; section f2 and the rim d of the ease, one end of the `spring g bearing on the stop f4 and en' gaging with the latch of the hasp c and the other end of the spring bearing on the heel of the hasp. The front plate a is now placed within the marginal rim d, bearing on the rim-sections of the skeleton frame, and the edges d of the rim ol are bent inward over the front plate. By the use of the skeleton frame the edges of the rim d may be turned over by a die, and thereby the case, with the front plate, may be secured to the skeleton frame.

A padlock constructed in this manner of sheet metal depends for its strength on the rigidity of the skeleton, and as no part of the metal of the case is subjected to heat the resiliency, polish, and color of the stamped metal are retained.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a padlock, the combination with the plate e having the rim d, of the skeleton plate f having a series of rim-sections, and the front plate a secured by the turned-over edge of the rim d, as described.

2. The skeleton plate f having the rim-sec tions f'f, f2 and f3, the stop j"4 and posts f5 and f6 adapted to support the hasp and locking-spring of a padlock and the case, as de scribed.

In witness whereof I have hereunto set my hand.

' JOSEPH L. CRANDALL. Witnesses:

JOSEPH A. MILLER, J r., B. M. SIMMS.