USRE4542E - Improvement in permutation locks - Google Patents

Description

JULIUS c. HINTZ. 4

Improvernent in Permutation Locks;

No. 4,5 12. Reissued Sep. 5.1871.

JULIUS C. HINTZ.

Improvement-in Permutatiofi Locks.

Reissued Sep. 5 1871.

UNITED STATES PATENT OFFICE.

JULIUS o. HINTZ, JR, oF'ToINc NNArI, OHIO.

' IMPROVEMENT m PER-MUTATION LOCKS.

Specification forming part of Letters Patent No. 108,481, dated October 18,1870 reissue No. 4,542, dated September To all whom it may concern:

Be it known that I, JULIUS O. HINTZ, Jr., of Cincinnati, in the county of Hamilton and State of Ohio, have invented a certain new and useful Improved Permutation Lock; and I do hereby declare that the following is a full, clear, and ex act description of the construction and operation of the same, reference being had to theanuexed drawing making part of this specification, in which- Figure 1 is a perspective view with the permutation wheels removed and the sleeved disk Gr drawn out from the arbor A. Fig. 2 is a plan of the reverse side of a permutation wheel. Fig. 3 is a section through the line a: win Fig. 2. Fig. 4 is a plan of front of same, showing cam c on its face. Fig. 5 1s a plan of reverse side of same, with cap J and screw J removed so as to show pinionJ. Fig. 6 is a view of the keyed washers which separate the permutation wheels. Fig. 7 is a perspective view, locked. Fig. 8 is a front elevation, unlocked, and the sleeved disk G removed. Fig. 9 is a view of a part detached.

The objects of my improvements are, first,

. greater security against burglars; and, second,

greater simplicity andconsequent economy.

Similar letters refer to similar parts throughout the drawing.

A is a spindle attached to the knob or handle and passing through the lock. E is a sleeve rigidly fastened at the outer end to the lock-case. The spindle turns easily inside this sleeve, and at its inner end is a male screw, which works in a female screw inside the .sleeve L, and over which the disk Gis rigidly attached. The inner end of the screw is flattened on one side, as shown in Fig. 1.. The carrying-dog H, which maybe of any convenient shape, fits neatly over. this part of the spindle, and has a pin passing through it, riveted on the outside, and which fits in an.appropriate recess in the face of the disk G, Fig. 7'. This, together with the nut M, which is screwed on the spindle A and binds the carrying-dog to its place, prevents the screw from working when it is desired to operate the look by the spindle. O G (J the are permutation wheels, which work loosely over the sleeve E, through which the spindle runs. They have the usual connectingpins or proj ectionsupon theirffaces for the purpose of moving each other. The disk G has also such a pin, which interlocks with a similar one upon the face of the wheel contiguous to it. This pin in the disk G is shown in the drawing; the similar ones in the wheels are not shown. A longitudinal groove is made in the sleeve E, shown in Fig.

1. Metallic washers, each having -a projection fitting neatly in this groove, are placed around the said sleeve, one between each two of the permutation wheels. These wheels each have a wheel, J, and pinion J, Fig. 5, for the purpose of changing the combination of the lock. Both wheel J and pinion J sit in recesses, respectively, provided for them, and in which they turn easily. The pinions are secured in their places by clamps J. Through the clamp, pinion, and the body of the permutation wheel a bolt, J is passed, having a head, which binds the clamp J. The lower end of the bolt J is a male screw and fits into a female screw cut into the permutation wheels below the pinion-seat. Through this bolt, longitudinally, there" is a square hole, in which the key Q, which is to be used in changing the combination, fits, clearly shown in Fig.2. The cog-wheels J sit neatlyin their places without being otherwise fastened. The connecting-pins, by which the wheels operate each other, are at tached to the cog-wheels so that they may be revolved without moving the remaining parts of the combination wheels when the screw-bolt J is loosened, as afterward explained. When the screw-bolt J is tightened the cog-wheels and pinions donot move separately. There is a cam upon the face of each permutation wheel whose diameter is one-fourth of an inch less than that of the wheel, and placed one-eighth of an inch eccentric to the periphery of the wheel. D D D are yokes, suspended upon square pins D D' projecting from the lock-case, with tubular washers K between them, in the manner clearly shown in Fig. 1. The distance of the arms of the yoke from each other is equal to the diameter of the cams. D are arms upon the yokes D, which sustain the projecting pin B, which is permanently attached to the rear or weighted end of the bolt B. Other similar-shaped arms are shown upon the other ends of the yokes, but their only object is symmetry. The holes S in the arms of the yok'es, through which the square pins pass, are slotted-laterally so as to permit as much play 'as the eccentricity of the cams may require. The upper edges of thearms D are made a scintilla too low to support or come in contact with the distance on each side of the notch G.

formed so as not to interfere throughout its range in the slot G of the disk G, and of the cogs on the l ward fall of the bolt B. The knob, not shown in cation of the permutation wheels.

locked and it to be desired to open it, the knob her on whichthe lock is set on the dial opposite olutions, less one, as there are combination wheels,

' lutionas-will bring the thirdnumber onwhich the lock is set on the dial-opposite the mark on a the stationary ring. The first operation above described has set the wheel nearest the bolt, the

- and the third has set the wheel third from the now. set, andit may be opened by turning the pin B, except when the pin F falls into the notch When locked, the periphery of the disk G, by contact with the pin F, always sustains the bolt at such aposition that the pin B is just above the arms D, except when the pin F is above or in the notch G and, in order that the pin F in its fall may be as noiseless as possible, the edge of the disk G is chamfered slightly for a very small When the arms D are withdrawn and the notch G presented to the pin F the bolt falls by its own gravity. The bolt B plays loosely on the sleeve E. It isof motion with the square pins D D. It receivesits motion, through the link F, from the disk G by means of the catch F, which interlocks rear arm of the link, which gear into the cogs on the bolt. B" is a stop which limits the downthe drawing, has the usual dial, and correspondin gly-fixed mark on the stationary ring surroundin gthe dial, for the purpose of indicating the lo- The operation is as follows: Assuming it to be is turned as many full revolutions to the left as there are combination wheels, and so much of an additional revolution as will bring the first numthe mark provided on the stationary ring; the knob is then turned to the right as many full revand so much of an additional revolution as will bring the second number on which the lock is set on the dial opposite the mark on the stationary ring the knob is then turned to the left as many fullrevolutions, less two,as there are combination wheels, and so much'of an additional revosecond has set the wheel second from the bolt,

bolt. If there be only three wheels the lock is knob slowly to the right until the notch G of the disk G is immediately under the pin F of the link F, when the pin will fall into the notch by the rear end of the bolt, which is for that purpose weighted, falling by its own gravity, the previously-described operations having separately withdrawn, by the operations of the cams C, the arms D from underneath the projecting pin B. The combination cannot bedisarranged when the bolt is withdrawn. To disarrange, when locked,

turn the knob three or more times to the left. To

change the combination, select a number on the dial for every combination wheel: Assumingthat there are three wheels and it is desired to set the lock to any three given numbers: arrange the wheels upon the combination previously set 3 then insert the key Q into the appropriate hole 1n the boltJ inside of the lock until the little stump, which is not new and not shown in the drawing, has entirely entered the clutch of the key; turn the key a quarter circle to the left, which will for opening the lock be gone through, varied only by stopping during the additional revolutions at the newlyselected numbers, the combination will be changed, as desired; but as soon as the last wheel of the combination is set, ,and'before attempting to move the bolt, the pinion J must be tightened and the key Q withdrawn.

Having thus described -my invention, what I claim as new, and desire to secure by Letters.

Patent, is

1. In combination with wheel cam Q, the pinion J, wheel J, clamp J, and'bolt J when constructed and arranged for operation as herein described. l

2. In combination with wheel 0 andcam C, the

yokes D provided with slots S and mounted on pins D 'D.

- 3. The yokes D provided with slots S and arms D, and arranged to move laterally on pins D D, in combination with the projecting pins B and bolt B.

4. The notched disk c, with its sleeve L, in combination with the swinging bolt B working on the sleeve E, and the link, F pivoted to the case M, substantially asdescribed.

'5. The swinging bolt B having its front end weighted so as to fall by its gravity when released, in combination with the link F having one of its arms connected thereto, substantially as described, whereby thebolt is held suspended until the link is released, as herein set forth. 6. The combination of the weighted swinging bolt B provided with the arm B, and the slidi yokes D, constructed and arranged to operate substantially as set forth.

. 1 J. 0. HLNTZ, JR.

Witnesses:

FRANK MILLWABD, JAMES MOORE.

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