US481597A - Niels geoeg sxrensen - Google Patents

Description

(No Model.)

N.G.sO-RENSEN.

LOGK.

No. 481,597. Patented Aug. 30, 1892.

UNITED STATES PATENT OFFICE.

NIELS GEORG SRENSEN, OF STOCKHOLM, SWEDEN.

LOCK.

SPECIFICATION forming part of Letters Patent No. 481,597, dated August 30, 1892.

Application filed November 5, 1891. Serial No. 410,981. (No model.)

To a/ZZ whom it may concern:

Be it known that I, NIELs GEORG SEEN- SEN, a subject of the King of Sweden and Norway, and a resident of Stockholm, in the Kingdom of Sweden, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description. Y

This invention relates to a look having a bolt movable up and down and actuated only by gravity, the peculiar construction ot which is that the bolting or unbolting is accomplished from the inside by a tripper and not with a key and that the bolting from the outside can be performed by a tripper mounted on the outside of the door, whereas a key will open the look from the outside.

In the drawings, Figure l is a vertical section of the lock. Fig. 2 represents the same viewed from the edge. Fig. 3 is a horizontal section on line XY,Fig.1; and Figs. Li, 5, and 6 are detail Views.

A is the bolt movable up and down, which, in the Way already well known, may be actuated by means of the lever B and lever D, contained in the handle O. On the bolt A there is, by means ot' one or more screws E, iixed a plate F, projecting at an angle from the bolt. The same plate F is provided with a hole, which may be arranged differently. Fig. 4 represents the plate viewed from the top, and Fig. 5 is the same with the hole shaped some# what differently. On the side of the bolt there are a number of tumblers I'I, guided by pins I and K, running on oblong slots L in the tumblers. On the drawings four tuinblers are represented; but their number may evidently also be another. The tumblers have downwardly-extending angle-pieces M, being about parallel with the bolt and preferably placed in front of the tumblers, as shown in the drawings. The lower ends of the said angle-pieces are situated, when the bolt is down, immediately above the plate F. In order to raise the bolt and open the lock, it is thus necessary that the tumblers occupy such a position that each of its angle-pieces M stands above a corresponding hole in the plate F.

The bolting of the look from the outside is simply effected by turning the tripper N, situated behind the tumblers, and Vwhich for such a purpose is on its spindle provided with a button or knob N on the outside of the door. In turning the tripper Nall the tumblers, respectively, and their angle-pieces M will be pushed forward beyond the pierced holes G, from whence the tumblers cannot be brought back or removed by the said tripper N, as shown in Fig. l. The way in which the look is bolted or unbolted from inside the door is effected by turning the tripper O respectively in the direction required. The tripper O and the tumblers are mainly so adapted and oonstruoted in connection to each other that the tumblers, when the lock is to be unbolted, on turning the tripper O as far as possible to the desired direction will get in such a position that all the angle-pieces M come straight above their corresponding holes G in plate F, thus allowing the bolt to be raised. 1n turning the tripper O in the opposite direction the lock will consequently be bolted, because in doing so the tumblers will be brought in a disordered position, respectively, to the corresponding pierced holes, thus preventing the bolt being raised. rlhe motion ot' the tripper O in the one direction is determined by the plate P, inserted between the tumblers which the tripper enters, and in the opposite direction conveniently and determined bythe tumblers. The spindle of the tripper O is provided with aknob O on the inside ofthe door.

For the opening of the lock from the outside there is used a key Q, by means of which the advance tumblers are brought back as the key-bit actuates the upright parts H of the tumblers. Those parts ll have a different shape in order to obtain a certain profile of the key-bit, and for the same purpose the plates P are also made of dierent shape. These plates have also for purpose by a suitable elasticity to maintain the tumblers in their respective positions. Fig. G represents a plate P. An ordinary key may also be used in lieu of the tripper O from inside the door, if desired. The plate Fis iixed, as described, at one side of the bolt; but it may also be fixed so that it maybe located above the bolt. The position of the tumblers must, of course, be changed accordingly.

I claim- In a lock, the combination, with a vertically-movable bolt provided with a plate pro- IOO j ecting therefrom and having holes therein, of tumblers moving in an angular direction to the bolt, angle-pieces projecting from the under side of the tumblers and substantially parallel to the bolt, whereby when the lock is unbolted said angle-pieces will be in a position directly above the said holes, a tripper beneath said tumblers and reaching up into notches in the edges thereof, and a knob on said tripper, whereby they may be actuated lo from the outside of the door.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

NIELS GEORG SRENSEN.

Witnesses:

HERMAN KUSTERER, AXEL GEOEGII.

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