US40882A - Improvement in locks - Google Patents

Description

NITED TATES PATENr riefen.

THOMAS GEORGE HAROLD, OF BROOKLYN, NEW YORK, ASSIGNOR TO HIM- SELF` AND JOHN W. KISSAM, OF SAME PLACE.

iMPaovEMENT 1N Locks.

Specification forming part of Letters Patent N0. 10,S82, dated December 8,1863.

To a/ZZ whom it may concern:

Be it known that I, THOMAS GEORGE HAR- OLD, of' Brooklyn, in the county of' Kings and State of New York, have invented, made, and applied to use a certain new and useful Improvement in Locks; and I do hereby declare the following to be a full, clear, and exact description of the nature of my said invention, reference being had to the annexed drawings, making part of this specification, wherein- Figure l is an exterior elevation of said lock. Fig. 2 is a vertical section of the same. Fig. 3 is a detached view of the concentric cylindrical tumblers as when locked. Fi g. 4 is a detached view of said tumblers in position for opening the lock. Fig. 5 is the hasp and ring detached. Fig. 6 is a section and elevation of the cylindrical tumbler, and Fig. 7 is a section and elevation of the notched ring of said tumbler, and Fig. S represents the Inanger of securing this lock when used for trunks,

Similar marks of' reference denote the same parts.

Tumblers for locks have heretofore been made of circular disks with a notch in one portion of the periphery, to take a stud on the bolt or hasp, and circular tumblers with turned-up flanges and decoy notches or teeth have been used for retaining a hasp or bolt, as will be seen by reference to Letters Patent granted to me August 5, 1862, and the lockcase has been screwed together, as also shown in the same patent.

My present invention is a modification of' and improvement upon my aforesaid Letters Patent, and consists in constructing` the tumblers that have the decoy-notches as a series of concentric flan ged rings one within another, so that the flanges are employed in the setting of the tumblers, and the ring or pipe shaped tumblers set together and sustain each other. I secure these tumblers with a center pin or bolt, and I effect changes in the lock by moving rings that surround the notches of the pipe-shaped tumblers, said rings only having one notch for the passage of the shackle or bolt.

I attach the hinge of my shackle to a ring that surrounds the shell between the flanges of that shell so that the rivet or screw of said hinge is protected, and this ring enables me to change the position of the shackle relatively with the indicators or dials, two or more mortises being provided in the case beneath the ring for the passage of said shackle into the lock.

In the drawings, a is one half' of the shell or case, formed as a anged cylinder, within which are the dan ged tumblers l), c, and d. Each tumbler is made as a short cylinder or ring, extending inward from the flange, and each ange becomes the dial by which the tumbler is moved. These tumblers being concentric sustain each other, and they are retained in place bya bolt or pin, e, that passes through a square hole in the back part of l ofthe shell a, to prevent its turning, and 2 is a nut to secure the bolt in place. j' is the other shell or half case, screwed upon the case a, and which sheilf covers and prevents access to the nut 2. q is a ring surrounding the shells between the anges thereof, and h is the shackle hinged at 3, between lugs formed ou said ring, so that the hinge 3, being between the flanges of the shell, is protected from injury. The shackle passes through a nrortise in the ring and shell, and is provided with teeth 4 4, that set between the ringtumblers. Each of these ring-tumblers -is provided with a notch, which, when brought online, allow the shackle to be entered or withdrawn; and I also make decoynotches in the tuinblers, which notches are not cut all through, and hence will not allow the teeth 4 to pass, but prevent any person opening the lock by turning the tumblers and determining the position of the notches by feeling or sound.

In order to facilitate the construction of the tumblers, I form each. of two parts, consisting of a notched cylinder, 5, Fig. 6, extending from the dial-flange, and containing any desired number of notches, and a ring, 6, in which is but one notch, (see Fig. 7,) and I provide a pin or projection on the inner part of' each ring, to take one of the notches and cause the ring and tumbler to move together. It will now be seen that when all the notches are on line, as seen in Fig. 4, the shackle can be entered or withdrawn, and in this position the indicators of the lock, Fig. l, should be observed or noted, so as to bring the notches to the same points by means ot' the indicators for the opening of the lock, and when the tumblers are turned indiscriminately, as in Fig. 3, the lock cannot be opened until the notches are again brought to line.

The red lines, Figs. 3 and 4, indicate the teeth on the hasp and the direction of their motion in entering or leaving the lock.

The rings 6 6 may be detached from the tuinblers when the lock is ta-ken apart and pnt aga-in upon the respective tumblers with the stud in a different notch in the tumbler, thereby varying the point of the index at which the lock will open, and effecting a permutation.

The case a f may have two or more mortises, as at 7, for the passage ofthe moving end Vof the shackle, andY hence when the shackle is withdrawn the ring and shackle can bev turned around on the shell to one oi.' the other mortises; and the tumblers must all be turned to the same point, in order to allow of the shackle passing in. Hence the indicator on the case a will stand at a different number or letter on the dials or indicators of the tumblers.

It will be evident that in place of having a swinging shackle. the shackle might enter and leave on a radial line to the lock-such would be the case if the lock were used on boxes, trunks, 85e., where the shackle would be on the lid and the lock on the other part of such box or trunk-and in order to attach the lock itselt', all that is necessary is to make a circular hole and screw the case together therein, as seen in Fig. 8, the part b of the case being entered from inside and the part a from outside the iianges holding the lock in place, and in this instance an opening may be left for access to the nut 2, so that the tumblers may be removed and changed without unscrewing the shells.

What I claim, and desire to secure by Letters Patent, is-

1 A changeable ring, 6, notched for the passage ofthe bolt or shackle, in combination with a notched circular tumbler, whereby the permutations or combinations may be changed, as specilied.

2. The ring G, carrying the shackle, in combination with the divided and flanged case, secured together, as specified, whereby the hinge of the shackle is secured between the anges, as set forth.

3. The divided lock-case, secured together as speciiied, in combination with the ring carrying the shackle, when said case is provided with two or more openings, whereby the position of the shackle relative to the indicators can be changed, when the shackle is withdrawn, without opening said case as specified.

In witness whereof I have hereunto set my signature, this 16th day ot September, A. D. 1863.'

THOS. GEO. HAROLD.

Witnesses N. STAFFORD, Clins. H. SMITH.

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