US94613A - Improvement in fermtttation-locks - Google Patents

Description

libdiii gunna aient @niita f W. F. KISTLER, OF CINCINNATI, YOHIO, ASSIGNOR-TO HIMSELF AND JOSEPH L. HALL, 0F SAME PLACE.

Letters Patent No. 94,613, dated September 7, 1869.

The Schedule referred to in these Lettera Iatexzt and making part o! the name To whom it may concern Be it known'that I, W. F. KIsTLER, of Cincinnati, in the county of Hamilton, and State of Ohio, have invented a new and useful Improvement in Combination N O-KeyHole Locks, of which the following is a full and clear description, reference being had to the accompanying drawings, making part of this specification.

My improvement in locks is applicable to that class of locks termed combination or permutation-locks, to

all -wherein the rotating tul'ublersare employed; andV consists in peculiarly-constructed washers for lessening the friction between the tumbler-s, also to an anchor,7 pivoted to the casing of the lock in such a manner that the parts thereof furthest removed from the tumblers7 shall, by their excessive gravity, preweutihe dog, secured to the anchor, from beingnin contact with the faces ofthe tumblers, in order to prevent feeling for the slots in the tumblers; and also, to a pendulous check-bar, having a projectiuglug nearV its lower or free end, so constructed, with reference to a corresponding projection from one ofthe arms of the anchor furthest removed from the tumblers, that in case the safe, or other receptacle of valuables to which the lock is secured, is tilted, the lug at'the end of the pendent check-bar will vibrate over, and be in contact with the projection from the anchor, to prevent the contact of the dog with the faces of the tumblers.

Figure 1 represents a horizontal sectional plan of my improved lock, taken through the centres of the tumblers and the knob.

, Figure 2-is an elevation of the interior of the lock, exhibiting the position' of the operating part-s thereof, immediately previous to'the entrance of the dog into the slots in the tumblers before the bolt can be withdrawn.

Figure 3 is van elevation of the interior operating parts of the lock, as seen when the' exterior plate is removed. The bolt is withdrawn.

Figure 4-represents part 0f the interior of the lock, showing the action of the pendulous check-bar upon the anchor, in order to prevent contact of the tumblers and the dog, in case the safe,or other recepl tacle of valuables to which 'the lock secured, is tilted.

Figures 5 aud-'6 are respectively the obverse and reverse sides of the tumblers.

Figure 7 is a diametrical cross-section of one ofthe tumblers.

A is the casing of the lock, of which the rear and front plates, respectively, B and C, may be removed.

The knob D, located upon the outside of the door of the safe, and attached to the dialfplate a, is secured y The opposite free end c of the, arm F extendsfurther from the spindle G, the cylindrical continuation ofthe arbor E, than does the corner bearing thepin b, the end face l of which is convex.

Further in upon, and secured to the spindle G, is the fdriving-disk H, provided with pin h, which engages a similar pin, h', projecting from the first of the series of tumblers I, which are disk-rings, having the slot f in each, for the reception of the dog when the bolt is to be thrown.

Each of these tumblers I is mounted loosely on the hub c of an annular dislnor washer, J, the projecting iiauge t of which extends far enough from the hub to separate, the tumblers, and serve as a washer between them.

After the tumbler has been mounted on the hub of the disk J, aflange or ring, k, is attached, by screws g', as clearly shown in figs. and 7, for the purpose of holding the tumbler in place.

'llese annular disks or washers J, with the tum,- blers I mounted thereon, are then slid upon a hollow spindle, K, which is att-ached to a removable head or rose, K'.

This hollow spindle K extends from the head K' to the driving-disk H, and is ofthe requisite length to reeeive all the disks or'washers J, with 'the tumblers on them. It is provided with a rib, l, that fits into a slot, g, on the inner face of the washers, for the purpose of preventing the latter from turning, all as' clearly shown in tiff. 1.

ltais obvious that all of the washers, except the one nextto the head K', may have the tumblers I mountedon them, and then'be slid upon theholllow spindle K without the use of the flange-ring k, and that` in the exceptional instance a iiange or other equivalent device may be left on the inner face ofthe head K', and that in this arrangement the tumblers will be Ias free from friction as in the other.

The spindle G extends beyond the driving-disk into the cylindrical cavity in the spindle K.

Near the bottom ofthe lock, and nearly midway'be tween the opposite ends thereof, is the-pivoting-bolt L' to the anchor M.

The anchor has the four arms, 1, 2, 3,'and 4, respect-A ively.

A line passed through the contre of the pivotL would pass through the. entire lengths of the arms/1 and 4.. The arm 1 curves up toward theI arm F, which is immediately over it. The upper face of arm 1 is slightly con/ex.

The arm 3 of the anchor M is elbowed at m, Where it comes in contact with the driving-disk H. Its prolongation 3', beyond and beneath the driving-disk H, has its upper face convex, toiit about the said diskH.

A curved lug, 3", projects toward the crank-arm F, and is acted upon by the piu 11, which projectsfrom one corner ofthe arm-F.

A dog, N, is secured to the arm 2 of the anchor,

'in such a position that it readily enters the slots in the tumblers I when it is desirable to-withdraw the bolt; otherwise the dog `cannot touch the faces of the tumblers, being withheld therefrom by the greater gravity of the arms 2 and 4, which are on one side of the pivot stud n, which carries a roller, R, located within the slot in the free end cfa-rin 2 of the anchor.

The interior surface of the slot, againstwhich the roller bears whenlnotion is given to the anchor, is elbow'ed at o, and the incline-surface o from the angular point O is of greater length than the horizontal surface o" of the interior of the said slot,in the position of the parts of the lock exhibited in iig. 2f

A slot, p, in the arm P, extends from near the stud n toward the pivot of said arm. i

A. pin, g, occupies the slot p. It is secured to the operating-lever b, which isattached to the bolt T of the lock by the draught-pin lr.

In thefree end of the level S, upon the upper surface thereof,is1ocated the square-cornered recesss. The vertical wall s is, when thelock is out, as exhibited in fie.l 2, in close contact with the corresponding wall of the check-block t, secured .to the plate C of the lockcase.

, Further from the free end of the lever S than is the recess s,.and upon the under surface of said lever, is the recess u. The end wall 'a' of this recess is inipinged upon by the tip of the end c of the crank-arm F when the bolt is being withdrawn, as exhibited inr fig. 3.

A pendent check-bar, U, is so pivoted or otherwise Y secured to the 'casing of the'lock, near the top thereof,

that its free end, near the bottom of the lock, may freely -vibrate whenl the safe is tilted.

A shoulder, c, nearthe free end of the said checkbar, extends over the pin x, projecting from the arm 4 of the anchor, as shown in fig. 4, where the lock is not horizontal.

To manipulate the lock for the purpose of unlocking the safe or other receptacles of valuables, the slots f in the tumblers I are, by means of the known combinatioiis, brought into line opposite the dog N of the anchor- M, when, by a quick motion of the knob D, the free end c of the crank-arm F mpiuges upon the arni 1 ofthe anchor M, as exhibited in iig. 2, pressing it to the bottom casing,` of the lock, as shown in iig. 3,

v`causing the dog N to enter the slots in the series of tumblers at the saine time the slotted free end' of the arm,2 Aof the anchor is caused to move quickly in adirection-opposite to the bolt T. The roller B rolls over the inner horizontal, angular, and incline-surfaces of the slot of arm 2.

This operation causes the limiting-arm P to drop down at its free end, and since the'pin q of the operating-levers extends within the slot p of the limitingarm P, the operating-leverisalso falls, or is carried down, liberating therecess s of the said operating-lever from the check-block t. Still rotating the knob D, the tip 7 of the free end c of the crank-arm F engages the end wall u of the recess 'u in the bottom face of the free end of the lever S.y The bolt T is then drawn within the lock, as clearly shown in iig. 3, and the door of the safe or other receptacle opened.v

When it is desired to lock the door, it is first closed, .and the lknob then turned in -a direction opposite to thus, at vthe Sametime, withdrawthe dog N from the i tumblers, and cause'the free end of the limiting-arm P to carry up the free end ofthe operating-lever S, so as to bring the the vertical wallof its recess s immediately opposite the block t, and thushold the bolt in place.

The combination or arrangement of the tumblers l may nowfbe broken up, when it will be impossible to operate the lock without the combination being known to the operator.

It cannotbe picked, for the reason that Vas thedog N is held away from the tumblers, there can be no feeling for the slots, and consequently, nomeasurements taken by a' micrometer,7 for the purpose'of setting the tumblers on the line of their slots. v y

When a quick motion is givenl to the anchor M by a sudden turning of the knob, the dog N will strike against the face of some of the tun'iblers, and cause the anchor to rebound to its original/position; and when the knob is turned slowly the lpin b, in engaging with the rib 3 on arm 3 of the anchor, will causethe latter to tilt, and withdraw lthe dog N from.

contact with the tumblers. y

The pendent-arm U is called into use when thesafe is tilted in such a manner that the dog N will be in Contact with the faces of the tumblers, on account of the centre of gravity of the anchor being transposed to the opposite side of the pivoting-bolt L or nearer the tu nibleis. f

A shoulder, c, near the free end of said pendulous arm, extends over the pin x, which projects from the arm 4 of the anchor, near the end thereof, preventing the contact with the tumblers of the dog N.

From the foregoing description and operation of my improved lock, it appears that to those locks wherein the revolving tumblers are employed, the anchor and pendulous-arin U maybe used in connection therewith,

to prevent beyond doubt the 'picking of the lock; therefore constitute indispensible elements of locks.

The advantage of the herein-described washers is in the lessening the friction betweenl themselves and the tumblers caus'ed'to revolve within andabout them in the manipulation of the lock.'

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

1'. Mounting the tumblers I on the stationary annular disks or washers J, constructed substantiallyas herein described, and then arranging them on the spindle K, as and for the purpose set forth.

f 2. The anchor M, consisting lof the arms 1, 2, 3, and 4, constructed and arranged to operate substantially as herein described, and for the purposes set forth.

3. The arm F, with its point c and its pin b, in combination with the anchor M, consisting of` arms 1, 2, 3, and 4, when constructed aud arranged to operate substantially as herein described, and for the purposes 'setv forth.

4. The pendent check-bar U, in combination with the anchor M, when constructed and arranged to operate substantially as and for the purpose set forth.

5. The arm F, anchor M, tumblers I, arm P, lever S, block t, and lock-bolt T, when constructed and arl ranged to operate substantially as and for the purpose Specified. A

, W. F. KISTLER. Witnesses:

GYRUs S. BATES, 0. L. FISHER.

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