US1388691A - Permutation locking-ring - Google Patents

Description

G. B. BERGEN.

PERMUTATION LOCKING RING.

APPLICATION FILED FEB. 6. I919.

Patented Aug. 23, 1921.

PATENT OFFICE.

GEORGE BENTLEY BERGEN, OF CHICAGO, ILLINOIS.

PERMUTATION LOCKING-RING.

Application filed February 6, 1919.

To all whom it may concern:

Be it known that I, GEORGE E. BERGEN, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in a Permutation Locking-Ring, of which the following is a specification.

My invention relates to locking devices, particularly to a novel permutation ring lock.

One of the principal objects of this invention is to provide a locking device in the form of a ring or annulus, a section of the ring being movable in line with a portion of the body of the ring in order to provide an opening in the ring. The movable part is adapted to be held in locking position by means of a plurality of cylinders held in rotative position within the body of the ring member, these cylinders being so constructed and arranged as to be adapted for easy rotation from the exterior of the ring. Numerals disposed on the peripheries of the cylinders are so arranged as to be viewed through sight apertures provided in the ring casing and in such manner that the combination will be set in order to effect the unlocking result.

The mounting of the cylinders which correspond to the tumblers of an ordinary permutation lock constitutes one of the important features of the invention. These are so arranged that they are concentric with the locking bolt and as it is not essential that any material portions thereof project beyond the periphery of the ring casing, the locking device is to all practical purposes when locked, a complete symmetrical annulus having no projecting parts. That the device has no projections is of the utmost importance for when the device is made of a resistant material such as hardened steel, it is extremely difiicult to break it. This is so because there are no projecting portions of the ring which may serve as a fulcrum for an instrument used for breaking the lock. i

The lock may be employed for a multitude of purposes which need not be enumerated. It may assume other forms than that of an annulus.

The invention will be more readily understood by reference to the accompanying drawing, wherein,

Figure 1 is an elevation of a ring pad- Specifldation of Letters Patent.

Patented Aug. 23, 1921.

Serial No. 275,303.

lock constructed in accordance with my invention;

Fig. 2 is a sectional view therethrough showing the bolt in locked position;

Figs. 3 and l are sectional views on the lines 3-3 4.-4= respectively of Fig. 2;

Fig. 5 is a view similar to Fig. 2 showing the bolt in unlocked position;

Fig. 6 is an edge View of the device, and,

Fig. 7 is an enlarged elevation of one of the locking cylinders or sleeves.

In the drawings it will be seen that in the preferred embodiment of the invention the padlock is composed of a tubular ring 10, which is incomplete, the open space being adapted to be closed by the arcuate bolt 11. This bolt is provided near one end with a peripheral flange 12, which serves as a limit stop in the two extreme positions of the bolt, as shown in Figs. 2 and 5. Near the other extremity of the belt I provide three lugs or projections 13, located in parallelism. These lugs are adapted to serve as the locking devices and to cooperate with the socalled tumblers or sleeves 14. One of these devices is shown in Fig. 7, by which it will be seen that it comprises a cylindrical portion which is substantially the size of the space within the tubular ring 10, this portion serving to guide and support the tumbler in its rotation. The tumbler has a knurled or milled flange 15, and is provided with an end wall 16, having an aperture 17, of substantially the size of the bolt 11. At one point in the aperture I provide a notch 18, best shown in Fig. 4:, of a size substantially e ual to the projections or lugs 13, on the olt. The periphery of the cylindrical portion of the tumbler has numerals 19, disposed thereon, these numerals being adapted to be exposed through small sight apertures 20, formed in the ring 10 at the proper point.

It will be noted by reference to Figs. 4 and 6, that the ring 10, is flattened somewhat at the point of engagement with the tumblers 14;, the flat sides 21, being brought into engagement with the cylindrical portions of the tumblers. The remainder of the ring portion at the point of engagement with the tumblers is flared or enlarged somewhat to overlie the milled flange 15, on the tumblers. Thus the flange may readily be engaged by the fingers at the sides but is retained and guided by the enlarged portion.

In assembling the device the ring is formed overthe tumblers, being seamed or welded on the line 22. It will be understood, of course, that the notches 18, in. the tumblers will be located at different points with relation to the numbers on the periphery and therefore that different combinations of numbers will be required in order to bring the tumblers in such positions that the notche s will be in: line to permitthe bolt to be retracted;

The form and arrangement of-the parts are not essential and various modifications may be made therein. Means other than the arcuate bolt maybe employed in 'difl'erently shaped structures andthe devices for opening the ring may be changed. The essential feature of-the lock is considered to be the simple arrangement of the tumblers and the resultant economy in' manufacturing cost.

' It will be apparent that the locking tumblers may be disposed in the opposite end of the ring casing if desired, in which .case the projections 13, on the bolt will'be located on the opposite end of the bolt. Thiswill jections on said bolt adapted to cotiperate with the notches whenthe cylinders are rl' dis sed, substantially asdescribed. iln ad iice of the class described, the combination of a tubular casing, a bolt adapted to slide in said casing, a plurality of cylinders mounted within the tubular casing in end to end relation and fixedly held therein a ainstlongitudinal movement, said cylindersieing adapted to surround the bolt, and being provided with notches and with 'exteriorly displayed numerals correlated with the notches, and projections on the bolt adapted to cooperate with said notches, substantially as described.

3. In a device of the class described, the

' combination of a tubular, incomplete annulus, a bolt mounted with capacity for telescoping in said annulus, said bolt being provided with a plurality of alined projections, a plurality o cylindrical tumblers concentrically mounted within the tubular annulus and adapted to receive the bolt, said cylinders being flanged, a portion of the flanges projecting outside of the limits of the annulus whereby to provide a finger gri for rotating the cylinders, said cylinders being provided with notches adapted to oofiperate with the projections on the bolt, substantially as described.

4. In a locking device, the combination of an incomplete, annular, tubular casing,a bolt adapted to reciprocate within the casing, a plurality of cylindrical tumblers mounted within the casing, a bolt adapted to project through the tumblers, said tumblers having a cylindrical portion and a flange )ortion, said casing being pressed to provi e a recess for a portion of the flange of each cylinder and notched to permita portion of the flange to project outside of the casing, substantially as described.

5. In a locking device, the combination of a tubular casing a boltadapted to telescope therein, aplurality of cylindrical tumblers mounted within said tubular casing, a flange on each of said tumblers, said flanges projecting outside of the limits of said tubular casin for a portion of their extent, said cylin ers being provided with an interior notch, projections on said bolt, adapted to coiiperate with the notches in said cylinders. each of said tumblers having numerals displayed on the periphery thereof, and said casing being provided witho enings throu h which said numerals may viewed, S11)- stantially as described.

6. In a locking ring, the combination of anincomplete tubular annulus, an arvuate bolt adapted to telescope within said annuhis and to close the o ening in the annulus, said bolt being proy i ed with projections. a plurality of hollow, cylindrical tumblers adapted to receive said arcuate bolt, said tumblers being interiorly notched to 006perate with the projections on the bolt, said tumblers being provided with flanges adapted to furnish a fin er grip for rotatin the tumblers, the tumb ers being mounted within the tubular annulus, the annulus being flattened and notched to permit of the projection of a portion of aflan e of each tumbler outside of the limits ot the tubular annulus, substantially as described.

Signed at Chicago, 111., this 1st day of Februar 1919.

G ORGE BENTLEY BERGEN. Witness:

T. D. BUTLER.

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