US8559A - goffin - Google Patents

Description

F. C. GOFFIN, OF NEW YORK, N. Y.,

LOCK FOR ASSIGNOR TO CHARLES I. GAYLOR.

SAFES, 85o.

Specification of Letters Patent N o. 8,559, dated December 2, 1851.

To all whom z' may concern.'

Be it known that I, F. C. Gorriti, of New York, in the county and State of New York, have invented certain new and useful Improvements in Safe-Locks; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accompanying drawings, for1n ing part of this specification, in which- Figure 1, is a frontview of the plate to which is attached the slide and mechanism for operating the same. Fig. 2, is a view of the inner side of do. Fig. 3 is a view of the back plate of the lock, to which is attached the principal 'part of the mechanism of the same, viz: the bolt, levers, tumblers, stumps etc., etc., in this view lthe stud on the talon is within the curved slot in the tumblers and the whole may be operated similar to an ordinary lock. Fig. 4, is the same view as Fig. 3, with the exception of the stud and talon which are in dierent positions, the talon being thrown up and the stud consequently on the outer side of the tumblers.V Fig. 5, is a view of the inner side of the front plate of the lock, showing the lever by which the catch is removed that supports or holds up the talon. Fig. 6, is a view of one y*of the collars which is attached to the outer plate. Fig. 7, is a View of a knob, which passes through the collar and operates one of the circular disks. Fig. 8, is a top or birds eye view of a series of tumblers. Fig. 9, is a View of the bit of the key.v

Similar letters of reference indicate corresponding parts in each of the several,

figures.

My invention consists in arranging and combining a talon with a series of tumblers, said talon having a stud upon it and so arranged that when the stud is within a curved slot in the tumblers the key may act upon the talon and bolt, but when the stud is thrown out of the curved slot, and above the outer surfaces of the tumblers, the key cannot act upon the bolt: the stud therefore must be brought within the curved slots before the bolt can be withdrawn or acted upon by the key; this arrangement etfectually prevents the lock from being picked.

To enable others skilled in the art to make and use my invention I will proceed to describe its construct-ion and operation.

A, Figs. l, and 2, is the outer plate which is placed directly in front of the lock, the lock being attached to it by screws. Fig. 1, shows the outer surface, and Fig. 2, the inner surface of the plate.

B, Fig. l, is the escutcheon.

C, is the key hole.

D, D, are the knobs.

E, E, are collars which are stationary and attached to the outer surface of the plate.

F, F, Fig. 2, are the two circular disks which are turned by the knobs D, D, these disks having tubes attached to them at their centers which pass through the plate the tubes having small recesses c, cut in them on their outer ends as seen in Fig. 6, the knobs pass through these tubes, and the projectlons a, a, on the shanks of the knobs catch into the recesses in the ends of the tubes and cause the disks to be turned when the knobs are turned; this will be understood by referring to Fig. 6 and 7, y', j, are the slots in the disks, the disks are kept in their proper position against the inner side of the plate by the arms b, b, which encompass the inner ends of the tubes see dotted lines in Fig. 2.

F', is the slide which is represented as covering the key hole in Fig. 2; cl, d, are the arms attached to the slide precisely as shown in the gure; the slide moves between suitable stumps e, e, e, e.

Gr, is the lever having its fulcrum at f, and attached to the slide at g.

t, is the spring which acts upon the lever i is the lug or stud attached to the pivot of the escutcheon.

Operation: Suppose the escutcheon B, to be moved o the key hole c, and in the position as represented in Fig. l, the disks E, E, and arms CZ', CZ, would then be in the position as represented in Fig. 2, the slide F, covering the key hole. It will be seen that while the escutcheon is in this position the lug or stud a', is not in contact with the lever Gr, and consequently the spring 7L, acts upon the lever which causes the projections on the arms CZ,l d, to catch into the recesses or teeth on the peripheries of the disks E, E, thus preventing the disks from being turned. Now suppose the escutcheon to be brought directly over the key hole, the lug or stud z', would then be in the position as indicated by the dotted red lines and would act upon the lever G, throwing back the projections on the ends of the4 arms cZ, (Z, sufficiently to clear the teeth on the peripheries of the disks while the escutcheon is in this position the disks may be turned by the knobs D, D, and if a person knows which numbers on the knobs and collars should -come opposite each other in order to bring the slots j, j, in the disks directly opposite the arms QZ, d, hemoves the knobs accordingly and the spring ZL, operating upon the lever Gr, will shoot the arms in the slots by moving the escutcheon past the key hole so that the lug or stud i, will clear the lever G, and the slide F, will pass the key hole. The disks can only be turned while the escutcheon covers the key hole as will be seen by referring to Fig. 2, if the es` cutcheon is moved past the key hole and be in the position as indicated by the black dotted lines in Fig. l, then the lug or stud z', would be in the position as represented by the black dotted lines in Fig. 2, it would not be in contact with the lever Gr, and the lever would consequently be controlled by the spring ZL, and the disks secured or prevented from turning, by reason of the projections on the ends of the arms catching into the recesses on the peripheries of the disks as before stated.

It is necessary to change occasionally the relative position of the numbers or figures on the knobs and collars if this could not be done the whole arrangement would be valueless, as the numbers would soon be generally known. The relative position of the numbers or figures are changed in the following manner: The shanks of the knobs D, have a recess Z6, out round them near their ends see Fig. 7. The knobs are secured in the tubes in the center of the disks E, E, by the slots Z, Z, in the levers H, H, the upper and lower edges of the slots tting in the recess. These levers H, H, are connected by pivots m, m, to a bar I; now when thebar I, is drawn or moved in the direction indicated by the arrow till the circular opening n, n, in the slots which are larger in diameter than the Shanks, are opposite the ends of the shanks, the knobs may then be withdrawn and replaced. The relative position of the numbers on the knobs and collars being changed as desired, when the knobs are replaced the bar I, is moved back to its original position and secured by the catches J. The bar I can only be operated upon when the safe door is open, as the edge or catch J, is then only exposed.

I will now describe the lock which constitutes the second part of the invention.

K, Figs. 3 and 4;, represent the back plate of the lock.

L, is the bolt which slides between appro- ,the upper part.

t, is a stump it being the center on which the tumbler is hung.

P,'is a lever or catch hung on the same center as the tumbler.

u, is the stump or pin on which the key turns, in Fig. 3, the bolt is represented as being thrown forward and is in a locked state, now while the several parts are in the position as represented in Fig. 3, the bolt L, may be withdrawn or unlocked merelyby turning the key in the ordinary way, viz, from left to right, the bit of the key raising the end of the lever M, and freeing the catch o, on the opposite end of the lever from the stump o, the bit in turning acting upon t-he end of the talon or lever N, and shooting back the bolt, the sprino w, throwing up the end of the lever M, which end was depressed in unlocking and keeping the catch against the stump o, thus far the operation is merely that of an ordinary lock. I refer again to Fig. 3. Now suppose that a second turn or revolution isr given the key after the bolt has been shot forward and is in a locked state, it will be then seen that the bit of the key will -throw up the end of the talon or lever N,

the stud g, being on the outside of the tumblers, and the catch y, onv the talon bearing against the stump e, preventing the bolt L from being shot back. The talon being held upv by the lever or catch P, which is brought directly under the projection R, of the talon by the spring S, when the talon is raised.

Fig. 4 represents the position of the several parts when a second revolution has been given the key, when in this state, the key cannot act upon the bolt, it may be turned in the lock any number of times, but with no effect, the talon or lever N, must be let down the catch y relieved from the stump .2- and the stud Q, be in the curved slot s, of thetumbler, as seen in Fig. 3, before the key can act upon the bolt.

In order to let down the talon a lever T, is attached to the front plate K; see Fig. 5, which represents the inner side of the front plate. a', represents the fulcrum of the lever. 'The position of the lever T when the front plate is secured on the lock is seen by the dotted lines in Fig. 4, when the key is placed a certain distance in the key hole the back edge of thebit of the key by turning the same fronfrright to left will act upon the lever T, the end fu', of which comes in contact with the stud b', on the catch P. This operation relieves the projection R, on the talon N, of the catch P,

and the talon falls till the stud g touches the edge of the tumbler. The key is then to be pushed in as far as it will go and turned from left to right about one-third of a `revolution by which means the tumbler `will act upon the talon and throw the stud g on the o-uter side of the tumbler the key then of course is turned as before described and the bolt shot back or unlocked. Other devices than the lever T, may be used for operating the catch P. I do not confine myself to any particular method.

I have described only lone tumbler O, in order to prevent confusion and place the construction and operation of the lock in a simple light, but many tumblers may be used. They have all. the same center z', but their springs bear against the stump V.

Fig. 8, represents a top or birds eye view o a series of tumblers with the recesses or passages c', through which the stud g, must pass in order to reach the curved slot s, which is in all the tumblers; these recesses c', are cuts in the tumblers at dilierent distances on their edges as will be seen by referring to Fig. 8, and the bit of the key must be so formed as to move each tumbler the required distance in order to bring the recesses or passages c, in line so that the stud g, can pass through, hence the dihculty of picking the lock and the impossibility of making a suitable key without dissecting the lock.

Fig. 9 shows about the form of, bit that would be required in order to bring the several recesses c', in line.

I do not claim the knobs D, D, and collars E, E, with the numbers on them for the purpose of serving as indexes, as they have been previously usedneither do I claim a series of tumblers as those described for they have also been previously used but What I do claim as new and desire to secure by Letters Patent is:

The talon N, with the stud q, attached to it, in combination with a series of tumblers O, having curved slots 0, in them, said talon and tumblers operating as described, viz: the talon being thrown up by the key during its second revolution and the stud g, in consequence placed on the outer side of the tumblers, the talon being held up by the catch P, the catch y, on the talon bearing against the stump e, and preventing the bolts from being moved back or withdrawn. The talon N, requiring to be let down when the bolt is to be withdrawn, so that the stud g may work or slide in the curved slot o, in the tumblers, and the catch y, be free from the stump e, the bit of the key, in turning, acting upon the end of the talon and shooting back the bolt substantially as described.

F. C. GOFFIN. Witnesses:

O. D. MUNN, L. H. WALES.

Images