US78310A - Improvement in permutation-looks - Google Patents

Description

D. K. MILLER, or READING, PENNSYLVANIA.

Laim Patent No. 78,310, ma May 26, 1868.

IMPROVEMENT IN I PERMUTATION-LOGKS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, D. K. MILLER, of Reading,'l3erks county, Pennsylvania, have invented an Improved Permutation-Lock; and I do hereby declare the following to be a full, clear, and exact description ofthe same.

My invention consists of a cheap, simple, and secure permutation-lock, constructed and operating in thev peculiar manner fully described l1ereafter, the lock 'being not only applicable to safes, but, owing to its cheap ness, is an economical substitute for 'the` less secure drawer and cupboard-locksof ordinary construction.l

In order to enable others skilled in the art to make and use my invention, I will now proceed to describe its construction and operation, reference being 'had to the accompanying drawing, which forms a part of this specification, and in rn'hich- I Figure 1 is a sectional view of my improved permutation-lock.

Figure 2 the same, showing the parts in a diiierent position.

Figure 3, a sectional view, showing the several parts ofthe lock detached or partly detached from each other.

Figure 4, a transverse section, on4 the line 1 2', iig-l.

Figure 5, a perspective view ofV a portion of the look.

yFigure 6, a deachedview of part of the same.; and

Figure ,7, a modification ofv my invention, drawn toa reduced scale.

Similar letters refer to similar parts throughout thersevernl views.

' To the rear of theezrse A of the lock is secured a plate, B, the front of the case being recessed, as shown at a', for the reeeptionlof part of the knob C, to which' the lock-spindleD is secured, the latter passing through, and being arranged to slide longitudinally to a limited extent in the tubular projection .7; of the case, and being` maintained in the position shownin fig. I, by a spring,s, bearingv against its inner end.

To the inner endet-the' spindle D is screwed a,disk,E,la portion of one edge of which is cut away, as shown iniig. 5, so as to forma shoulder, c, andl projection p, for a purpose described hereafter. and in the front face of the said disk is a circular groove, d, from which projects a pin, d', iig. 3.

Three disks FF, and F2, are arranged`to turn loosely uponthevprojecticn a stationary washer, e, int-era vening between the adjacent disks, and betu'een'lthe disks F. and E, so that the latter or any one ot' the disks may he turned. independently of the`others. v

A pin,f, which extends through, and projects on each side of the disk F, enters the groove d of the plate E, the opposite end of the pin entering a similar groove, g, in the disk F, the latter having a'pin, g', one end of which dts in a'lgroove, h, in the disk F2, which has also a pin.

On theedge of each of the'disks F, F1, and F2, is formed a groove for the 'reception of a split ring, t', of stout round wire, or of other suitable material, the latter being arranged to gripe the disks tightly, but so that a space, j, (tig. 6,) intcrvenes between the opposite ends of the said ring.

I prefer to make this' ring t' of stoel wire, or of some material harder than the disks to which it is fitted, and its opposite ends are'serratedas shown in iig. 6, so that the said ring shall 'gripe the disk, rand turn upon the same. j

In the upper portion of'the'look-case A, and ,directly over the disks, is an opening, c, for the reception of a tumbler, G, which has on its under side two projections u' at', a recess, g, and a tongue, Z, the latter tting into the recess m of the cap-plate B, for the purpose of guiding the said tumbler.

When the several parts of the lock are in the position shown in figs. 1 and 4, the. projection 'a of this tum-V bler rests upon the portionp of.the disk E, and the upper end of the tumbler projects above the lock-case. When, however, the several parts of the lock have been moved to the position shown in fig. 2, the tumbler enters the spacej, betiveen the opposite ends of each of the split rings z', and the projectionp of the disk E enters the recess q of the tumbler, sosthat thc'latter falls until its upper end-is ush with the upper surface of the locka case, (see figs. 2 and 5.)

The red lines X, iig's. land 2, represent a portion of the door of a safe in which thelock-case A is secured;

`s0 that the latter and thehandle are free to move, and may be turned in any direction until the disks are cansl a bolt, Y, :being arranged to slide witlhinthe said'door, and upon the upper portion of the lock-case, asi'shown in fig. 4. l

This bolt is operated by any ordinary mechanism, but cannotbe drawn back when locked, until the tumbler G, against which its rear end bears,is depressed, as clearly shown in iig. and the tumbler can only be depressed when the several parts'oi' the llock are brought to the position' lshown in {ig..f?, which is done by operating the, handle C in the following manner f. I

The spring s, (iigfL) has a tendency to force the handle back, asslioiv'n, and to bring the disk E in close proximity tothe disk F. The handle is turned in either directiomiuntil the pin d ofthe disk E, strikes thc pinf of the disk F, the latter then revolving withthc disk E. The handle C is still turned in the same direction, until all` of thedisks F, F1, and F2, are caused to revolve, and the motion of the handle islcontinued until the spacej of the third disk F2 has beenbrought directly beneath the opening /cof the lock-case, as shown in iig. 2, and which is indicated to the'operator bv a determined number on the handle -C coming lopposite to a. ixedpoint in front of the lock. I

The motion of -thehandle is then reversed, and the disks E,F,.and F-, are turned in the opposite direction, until the space yl of .the latter disk has also been brought beneath theopening c,and in line-with the space j'of the disk F2, which is in like manner indicated tothe operator by one of the numbers "on thehandle coming 'opposite to acertainjixed point. I

The motion of the -handle'is again reversed, and the disk F is`turned untilits spacej is'inthe same position, in respect to the opening t, as the spacesj of theformer disks. K

All that now romains to be done is to push the handle C inwards, and then to turn it in either direction,` until the projectionpand shoulder c of the plate E are directly beneath the tumbler, when the latter will fall into the spaces j of the disks, the projection p will enter the recess g of the tumbler, and the projection n of the latter paus to one side of the plate E, as clearly shown in iig's. 2 and 5. f-

After thus removing the obstructing tumbler, the bolt Y of the safe may be drawn back.

When the parts are in the position shotvn in tigri, the projection n of the tumbler resting on the portion p of the disk E, prevents the said tumbler from descending to'snch a point as to interfere with the froe'movements of the disks F, so that it will be impossible for n. person unacquainted with the proper numbers te deter mine the positions ofthe recesses 7' of the said disks; thus the picking ofthe lock is ei'fectually prevented.

When the parts are in the position shown in hg. 2, the spring s is compressed, and the disk E cannotbe moved toward the disks F, in order to operate'them, until the tumbler is' raised and its projection n removed from the path of the said disk E.

When the safe is bo1ted,.and itis desired to elevate the tumbler toits position behind the bolt, thehandle must be turned in either direction, until the tumbler-israised clear of'the disksF, by the cam-like shoulder e oi' the disk E, (iig. 5.) The projection' n of the tumbler' is thus raised from contact with the side ofthe disk E,

ed to revolve, afterwhich itvill be impossible for'the tumbler to againdescend unf-i1 the disks have been carefu ly turned, as before described. v l

The modification shown in iig. 7 shows a. simple method of applying my improved lock to a door. In this instance, the lock-case is enclosed entirely' ivithin the door, the lock-spindle being lengthened so as to extend through the front portion of the door, anden the latter is secured a ring or flanged-plate, z, in which is'formed the recess d' for the reception of part of the knob, and on which is marked the fixed point to which the numbers are to be turned. t

T he size or form of the tumbler G may be modiiied, if necessary, without departing from my invention, and the number of the disks F may be increased or diminished, if desired.

The above lock can be applied not only to safe-doors, but can be used for any purpose to. which ordinary locks are applied, and it is especially applicable as a drawer-lock, the tumbler G being in the" latter case used independently as a bolt, and in some cases the tumbler, especially when used horizontally, may be actuated byl a spring. I

The lock 1s simple in its details, is not liable to get out of order, and can onlybe operated by a person perfectly acquainted with the number or series of numbers that form a key tothe positions of the disks, and this number or combination of numbers may readily bechanged from'time to time, by properly adjusting the rings z'of the several disks so as to bring their spaces j to other positions in4 respect t'o'thepins by which the disks are turned.

I do not claim broadly the notched disks F in combination with a plate, adapted to the notches in the disk, and so operated and arrangedA as to retain and release a bolt; neither do I claim broadly a split ring,- arranged upon thevedge of a disk F but I claim as my invention, and desire to secure by- Letters Patentv Il. The disk E with-its projection p and shoulder, c, and secured to a shaft, D, in combination with disks F, or their equivalents, and with a tumbler, Gr, having arecess and a projection adapted to the projection and recess of the disk ll, the whole being constructed and arranged within a casing, A, and operating substantially as and for the purpose described. y A

2. The serrations or teeth upon the ends of the split ring z', for the'purpose described.

In testimony whereof, I have signed myname to this specification in the presence of two subscribing witnesses.

\ D. K. MILLER.

Witnesses:

JOHN WHITE, C'. B. Paros.

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