US271962A - Joseph p - Google Patents

Description

Patented Feb. 6, 1883.

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N UNITED TATES' PATENT GFFICE.

JOSEPH P. WHITE, F SAVANNAH, GEORGIA.

I v LOCK.

SPECIFICATION forming; part of Letters Patent'No. 271,962, dated February 6, 1883.

Application tiled March 28, 1882. (Model.)

[0 all 'whom 'it may concern Be it known that I, JosEPlI I. WHITE, a citizen of the United States, residing at Savannah, in the county Chatham and State of Georgia, have invented certain new and useful Improvements in Locks, of which the following is aspeciication, reference being had therein to the accompanying drawings.

My invention relates to improvements in locks, which are to be applied to doors and to other devices which it is desirable to keep locked; a-nd the objects of my invention are, first, to provide a lock for such purposes that shall be burglar-proof, or one that cannot be opened by drilling or cutting away the bolts which hold the parts in their locked position;

and, second, to provide a novel construction and combination ot' the parts of which it is composed. I attain these objects by the means described and by the mechanism illustrated in the accompanying drawings, in Which- Figure 1 is a front elevation of my lock,

, showing a plate of hardened steel, a handle for turning the locking-cylinder and its extension, the outer end of the key, and the pin-lifting slide. Fig. 2 is a side elevation, showing the parts above named, the casin g, the extension of the locking-cylinder that passes through the door or other device to which the lock is applied, the locking-arm upon its inner end, the pin-lifting slides, and a pivoted arm, the key being in position. Fig. 3 is a sectional elevation, showing the positions of the parts above enumerated, and also the springs which operate the locking-pins. Fig. 4 isa transverse section,showingthe casing in which the lockingcylinder works, the cylinder in position, one of the locking-pins passing through it, the spring which operates it, the pivoted lever which lifts the bolts, the space into which the key is thrust for unlocking the door or other device, and the vertical slide for raisin gthe pins when the key is inserted or withdrawn. Fig. 5 is a perspective view of a block or appendage which carries the horizontal slide, the pivoted arm or lever, and a vertically-moving slide for lifting the locking-pins. Fig. 6 is a. perspective view of the verticall y-movin g slide. Fig. 7 is an elevation ot' the arm ot' the lockingpins, showing a pin or projection upon one ot' its sides, which rests upon the vertically-moving slide;l and Fig. 8 is a plan view of a key,

| showing one arrangement of apertures for the plns.

Similar letters refer to similar parts throughout the several views.

In locks in which a series ot locking-pins have been employed very little protection has been afforded, on account of the fact that a burglar or other persons seeking to gain admission to the apartment could readily do so by drilling a small hole through the t'ront plate ofthe lock and then through the extension,

ing-cylinder can be turned and the door or other device opened by turning the lockingcylinder.

My invention is designed to remove this objection; and lo this end,in constructing locks, I prgvide a plate, A, of any desired dimensions, according to the device to which it is to be applied. This plate I prefer to make of steel, and to harden it to such an extent as to render it im possible to perforate it with a drill. Instead of' making this plate ot' steel, it may be made ot' chilled cast-iron `or of any other material that will resist' the action of a drill.

As a further protection against drilling away the locking-pins, it is preterred to place upon the outer end ot' the locking-cylinder and between the plate A and handle B a hardened collar, B', the diameter ot' which 'is to be equal to or greater than that of the cylinder. This collar is also to be made impervious to a drill. This having been done, thereis no part where a drill can be used t'or cutting away the operating parts ofthe lock, and thus gaining access to the apartment upon which it is placed.

I will now proceed to describe the features of novelty in the construction, combinations,

lock is composed.

To the inner face ol' the plate A there is secured by soldering, riveting, or by casting thereon a projection, C, the central portion ot' which is cylindrical in form, as shown in Fig. 2, and is bored out to receive the locking-cylinder C', as shown in Fig. 3. Upon two sides ot' the projection C there is placed flanges C2 G2, through which a series of holes are drilled, the number being such as to admit of the insertion of the desired number of lockingpins-say live or more or less. The holesjnst thus cutting olf all of the pins, when the lock-V reception ot' the pointed ends of the locking- 1 and arrangements ot' the parts of which this lOOl 1alluded to are extended through both of the projections, care being taken to have those in one exactly in line with those in the other, so that the locking-bolts may slide freely through then1.- The locking-cylinder O also has a series of holes formed in it, which correspond in number` and size with those in the projections, as shown in Fig. 3. Thelocking-pins are designated by D D D2 I)3 D4, they being preferably of hardened steel in order that they may resist the action of the burglars drill, and made in three sections, as shown in Fig. 3, one ofthe sections being placed in the upper projection G2, one in the locking-cylinder G',and the other in the lower projection G2. Above each of the upper sections there is placeda spring, E, said springs being held in position by a sliding plate, E. The lower sections'of these bolts are pointed at their lower ends, as shown, and each one of them is provided with a projection or pin, E2, asshown in Fig. 7. The combination and arrangement ofthe lastnamed parts are such that when the lockingcylinder is in this position the ditlerent sections will move freely up and down, but will not prevent the locking-cylinder from being turned by the handleB into such a position as to cause arm E3 to withdraw amain locking-bolt which maybe attached to the doors of a safe or other device, and thus unlock it, or so as to throw said locking-bolt into its locking position-a function which said arm performs in addition to that of holding the lock in or upon the door. The locking-pins E are brougbl;,nto this their unlocked position by the insert-ion of the key F, as shown in Fig. 3, it being provided with a'series ota .holes of different diameters, as shown in Fig. 8. 'lo enable the operator to insert the key, there is arranged in a block of metal, G, which is secured to the lower projection C2 of'the casing, a horizontallysliding pin, G', the inner end of which comes in contact with -a bellcrank lever, G2, the effect of a push upon the pin being to cause the lower arm of said lever to come in contact with the lower end of' a vertical slide, G3, which works in a slot formed in the block G, and raising it upward, in doing which a horizontal arm formed upon its upper end, as shown in Fig. 6, is brought into contact with the projections E2 on the lower sections of the locking-bolts, and bring the latter into such po- `sition that the key can be inserted, at which times, as before stated, the locking-cylinder can be turned into such a position as to unlock the room or receptacle to which the lock is attached.

It will be observed that there is in the up'- per surface of block Ga recess, into which the key passes on being inserted, and also that the surface of this block has in it a series of Y as, if they are not of the proper arrangement and character, unlocking cannot be effected, owing to the fact that some of them will enter either the lower projection or the locking-cylinder while the others were in a proper position for unlocking.

An important feature of the lock is that by changing the location of the holes in the key and the pins in their places a variety of coinbiua-tions can be formed and the unlocking of one lock with a key made for another lock be prevented. An examination of the drawings in this case will show that it is nearly, if not quite, impossible to pick the lock with any instrument passt-d through the key-hole, as, before it can be unlocked, each one of the lockingpins has to be brought to an exact position and held there until all are adjusted, which cannot be done with any instrument or instruments except a key fitted to the particular lock to which it is applied.

The extension H otl the locking-cylinder is provided with a screw-threadfor attaching the arm E3 thereto, by which means it may be adjusted to doors of any desired thickness.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. The combination ot' the plate A, the casing U, with its projections U2 G2, a series ot' locking-pins formed in three sections, the recessed block G, and the key F, the parts being y constructed and arranged for joint operation substantially. as set forth. i

2. The combination of the case O,tl1e re cessed block G, the'horizontally-sliding pin G', the lever G2, vertical slide G3, and the sectional sliding locking :ri'is, substantially as and for the purpose set forth.

In testimony whereof' I affix my signature in presence of two witnesses.

JOSEPH P. WHITE Witnesses:

S. H. VMGNEUR, H. G. Evnarr'r.

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