US834339A - Padlock. - Google Patents

Description

No. 834,339. PATENTBD 00T. so, i906.

, H. P. TowNsEND.

PADLoGK.

APPLICATION FILED FEB. 8. 1906.

v ma mmf@ tion.

UNITED sTATEs PATENT oEEIoE.

HARRY P. TOWNSEND, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO CORBIN CABINET LOCK COMPANY, OF NEW BRITAIN, CONNECTI- CUT, A CORPORATION OF CONNECTICUT.

PADLOCK.

Specicaton of Letters Patent.

Patented Oct. 30, 1906.

Application filed February 8y 1906. Serial No. 300,033. v

To a/ZZ whom t 77cm/ concern,.-

Be it known that I, HARRY P. TowNsEND, a citizen of the United States, residing at New Britain, Hartford county, Connecticut, have invented certain new and useful Improvements in Padlocks, of which the following is a full, clear, and-exact description.

My invention relates to locks, and particularly padlocks. 1

The object of the invention is to provide a simple, inexpensive, and efficient construc- Figure 1 is a front elevation of a padlock constructed to embody my invention. Fig. 2 is a similar view, the front plate being removed. Fig. 3 is a view of the inside Iof the removed'front plate. Fig. 4 is a view of the spring. Fig. 5 is a view of the key.

l represents the back of the padlock.

2 represents the cover-plate.

3 represents the hasp, pivoted at 4.

5 represents a hook on the end at the inner side of the hasp.

6 represents a spring, one end of which presses outwardly against a notched shoulder 3a, above but near the pivoted end of the hasp 3, while the other end 6@L is employed as the hasp-locking dog, arranged to press outwardly to engage hook 5.

9 is a stop-stud against which the spring 6 may bear when'the hasp is open and so as to limit the range of its forward movement. To aid in limiting this range of forward movement, a shoulder 6b may be formed in the spring. i The extremity 6a of the spring which forms the dog for the hasp may be bent so as to form, in conjunction with the shoulder 6b, an inverted-U-shaped cavity 6, the width of which is suflicient to permit the spring to have only a sufficient range of movement to free the .has 3 when said spring end is retracted. o retract the spring, a suitable 'key 7 is employed, which may be inserted through the usual keyhole 8 in the face of the lock and turned, so that its bitted end will engage a portion of the spring 6 and 'cause the dog ing end 6a to disengage the hasp-hook 5. I desired, suitable wards 1a 2a may also be employed to prevent the use of an improper key. i

2b is a stop which will prevent the key from being turned backward into engagement with the spring-degli.

It will be observed that the necessity for all tumblers and similar devices are eliminated by this construction and a simple and cheap, though quite effective, lock may be produced.

The space between the stud 9 and the overhanging top of the backing member 1 is shown to be very slight. It is through this narrow space that the dogging end of the spring passes. In this space it will have only a reciprocal movement m a line or direction to engage or free the hooked end of the hasp 3 when the latter is closed. The consequence is when the hasp 3 is closed and the spring engages and dogs the same any pulling movement on or attempt to open the hasp will merely cause the spring end 6a to hug the top and resist such effort. This narrow space also prevents any unnatural or excessive movement of the spring which would tend to dislodge or unseat it.

Obviously I have shown and described only the preferred form of my invention. As shown, the spring end itself engages the hasp. The inter osition of a separate piece mere y to avoid t e direct engagement of the spring would not, of course, avoid the invention.

What I claim is*4 In a padlock, a case, a hasp pivoted within `within said case, a spring-supporting stud near the top of said case, an inverted-U bend in said spring to receive said supporting-stud and limit the range of movement of said spring, one end of said spring pressing. against the hasp near and above its pivotal connection, the op osite end of said spring acting to engage the iiooked end of the hasp when the latter is closed.

HARRY P. TOWNSEND. i

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