US917810A - Padlock. - Google Patents

Description

B. B. STONE.

PADLOGK. APPLIOATION HLD PEB. 9, 1909,.

Patented Apr.- 13, 1909.

THE NoRRrs Pzrsks ca.. wAsmNcroN. D. c.

UNITED STATES PATENT OFFICE..

ELlNIER-B. STONE, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE CORBIN CABINET LOCK COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

PADLOCK.

No. 917,810. Specification of.' Letters Patent. Patented April 13, 1909.

To all whom it may concern: l secure. To that end, I provide in that side Be it known that I, ELMER B. STONE, a 1 of the padlock body, in which the pin tumcitizen of the United Stateshresiding at New i bler bores are formed, an undercut recess, as Britain, Hartford county, State of Connectil best seen in Figs. 2 and 4. I then provide a cut, have invented certain new and useful l closure which has a flared lower portion and Improvements in Padlocks, of which the foll which, when it is in its final position in said lowing is a full, clear, and exact description. i recess, stands under the undercut wall en- This invention involves an improvement in padlocks particularly of the type set forth in United States Letters Patent No. 864,743,

dated August 27th, 1907, and the object of the present invention is to provide an absolutely secure means for holding permanently in place certain internal parts.

ln the drawings, Figure 1 is a vertical sectional view of a padlock constructed to embody my invention, said parts being shown in elevation, and finally assembled, with key in place. Fig. 2 is a similar view just before the parts are finally assembled, and minus the key. Fig. 3 is a horizontal cross-section on the line :c-x Fig. 1 looking down, certain parts being in elevation. Fig. 4 is a similar view on the line y-fy Fig. 2, looking down. Fig. 5 is an edge elevation of the completed padlock. Fig. 6 illustrates a side and end elevation of a detail, before being assembled with the other parts.

It will be unnecessary to describe in detail the main features of construction since they correspond to the similar parts shown and described in the above entitled application. The main features comprise the case 1; the spring actuated hasp 2; the locking boltS therefor; the spring 4 for the locking bolt, the bolt operating device 5, which is in the form of a key-plug which is locked by spring pressed pin tumblers 6.

7 is a key.

The pin tumblers 6 have the usual followers 8. The bores for the pin-tumblers are formed from one side edge of the lock case 1. The bore for the bolt operating device 3 is referably formed in the same side of the ook body so that a closure 9 will serve to cover all bores. In the construction shown in the patent above referred to, the closure for these corresponding bores may become loose or may be driven out. The present invention comprehends a construction by which this closure may be made absolutely tirely around said recess.

The closure 9, before it is applied, is in the form shown in Fig. 6 in which it is bent as shown so as to foreshorten it in length and breadth, whereby it may be freely slipped into the aforesaid undercut recess, as shown in Fig. 2. Preparatory to this, all of the parts should of course be inserted and as a final step the closure 9 is placed in the position shown in Fig. 2. rl'hen, by means of a suitable tool, said closure is straightened out or flattened down to assume the position shown in Fig. 1, whereby its edges are forced out into hrm and positive engagement with the surrounding undercut wall of the recess. This forcing down of the closure 9 may be followed by a suitable finishing operation which will practically obliterate any line of demarcation showing where the plate has been inserted; assuming, of course, the material of the closure 9 corresponds in color to the material of the case 1, or if not, this line of demarcation can be obliterated by the application of a suitable finishing preparation, suoli as enamel or in deed electro plating. Inasmuch as the recess is surrounded by an unbroken wall, the closure can not be removed except by practically destroying the padlock.

What I claim is:

In a padlock, a body, a hasp, locking mechanism for said hasp contained in said body and including a bolt for the hasp, bolt operating means and a tumbler, said body having bores entering the side to admit the bolt and tumbler, said body also having a recess in its side around said bores and an unbroken undercut wall surrounding said recess, a closure in said recess, the edges of said closure projecting under the edges of said undercut wall.

ELMER B. sToNn.

I'itnesses JOHN BLAIR, CARL F. ANDERSON.

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