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Publication numberUS313113 A
Publication typeGrant
Publication dateMar 3, 1885
Filing dateOct 6, 1854
Publication numberUS 313113 A, US 313113A, US-A-313113, US313113 A, US313113A
InventorsMorris Schwerin
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Double-acting lock
US 313113 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)




N0. 313,113. Patented Mam, 3, 1885.



SPECIFICATION forming part of Letters Patent No. 313,113, dated March 3, 1885. Application filed October 6, 1834. (Model l To all whom t may concern:

Be it known that I, MoRRIs SCHWERIN, of Newark, inthe county of Essex and State of New Jersey, have invented certain new and useful Improvements in Double-Acting Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertainsvto make and use it, reference being had to the accompanying drawings, which form part of this specication.

My invention relates to an improvement in double-acting locks,l and it consists in a plate or casting which has two bolts formed upon it, one of which is longer than the other, in combination with a suitable spring-actuated plate or device for locking the bolts in position, as will be more fully described hereinafter.

The object of my invention is to form two bolts of unequal length upon the same bar, so that one or both of the bolts may be brought into use, as may be desired.

Figure l is a plan View of the lock with the outside plate shown only in dotted lines. Fig. 2 is a similar view showing the springactuated locking plate or device for holding the bolt iu position, the outside plate or the frame being entirely removed.

A represents the lockframe, and 'B the outside plate thereof,which is shown in dotted lines in Fig. 1, and which is provided with the key-hole C and the two openings D, which correspond to the two bolts.

In the frame A are placed the two separating-partitions E, which are recessed in their top-edges for the purpose of receiving the plate or casting F. This plate or casting F has the two bolts G H formed as parts thereof, the bolt G being twice as long as the one H. In the top edge of this plate or casting are formed a suitable number of notches, K, and a corresponding number of corrugations, I.

Pivoted in the frame, which is under the plate or casting, is the locking device J ,which has an upturned projection, L, for catching in the notches, and thus locking the plate or casting in any desired position.

Secured to the inner side of the frame A is the iiat spring N, which has its free end shaped so as to catch in the corrugations in the plate or casting, and to slip freely from one to the otheras the plate or casting is moved endwise by the key. This spring bears against the locking device uand keeps its upturned portion constantly pressed against the edge ofthe plate or casting, so that it will engage with one of the notches in the same whenever it is left free to move. When the key is inserted in the key-hole and turned around, this locking device is forced upward against the pressure of the spring, so as to force the upturned portion back out of the notch in the edge ot' the plate or casting. In the opposite edge of the plate or casting from the notches or corrugations are formed two notches, O, in which the key catches for the purpose of moving the bolt.

By making the bolts GH of unequal length, and by making two notches, O, in the edge of the plate or casting, it will be seen that the key, when turned once around, only moves the plate or casting far enough to operate the longest bolt, and when turned a second time the shorter bolt is brought into play. By this construction the plate must be operated twice before both bolts are brought into operation. A person not understanding this would simply move the casting back and forth, and thus operate the shorter bolt only with out unlocking the longer one. It will be seen that the whole lock consists only ot' the frame, the endwise-moving plate or casting, a locking device, spring, and key.

I am aware that two bolts of equal length have been formed upon a single plate or casting; butin this case both bolts are brought into play at the saine time, and not first one and then the other, as where the two bolts are made of unequal length.

Having thus described my invention, I claiml. In alock, a plate or casting having two bolts of unequal length formed as a part thereof, in combination with a spring actuated locking device which engages with the plate or casting, whereby the key must be operated twice in order to bring both bolts into use, In testiinony whereof Iax my signature in 1o substantially as shown. presence of two witnesses.

2. The combination, in a lock, of the plate or casting having two bolts formed as a part MORRS SCHWERIN.

thereof, and which bolts are of unequal length,

with the lockingplate J, provioled with a Witnesses:

projection to catch in notches in the plate or ISAAC LIGHT, casting, and the spring, substantially as set WILLIAM BLYTHE.. forth.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4545225 *Aug 19, 1983Oct 8, 1985Continental Industries, Inc.For use with suitcases, briefcases and the like
US7415854 *Dec 10, 2002Aug 26, 2008Fratelli Comunello S.P.A.Safety lock with adjustable-length bolt
Cooperative ClassificationE05B65/5238