USRE8035E - Improvement in time-locks - Google Patents

Description

70. LOCKS, n 2 7 3 BEST AVAlLABLE COPY 4 Sheets-Sheet 1.

S. A. LITTLE.

Assignor to THE YALE Lncx MANUFACTURING GQMPARY,

Time-Look.

No. 8,035. Reissued Jan. 8,1878.

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S. A. LITTLE.

Assignor to THE YALE L001: MANUFACTURING UOMPARY, Time-Lock. No. 8,035. Reissued Jan. 8,1878.

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S. A. LITTLE.

Assignor to THE YALE Locx MANUFACTURING COMPARY, Time-Lock.

No. 8,035. Reissued Jan. 8,1878.

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70. LOCKS,

UNITED STATES PATENT OFFICE.

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SAMUEL A. LITTLE, 0F SHELBURNE, MASSACHUSETTS, ASSIGNOR TO THE YALE LOCK MANUFACTURING COMPANY, OF STAMFURD, CONN.

IMPROVEMENT IN TIME-LOOKS.

Specification forming part of Letters Patent No. 146,832, dated January 27, 1874; Reissue No. 7,104, dated May 9, 1876; Reissue No. 8,035, dated January 8, 1878; application filed December 15, 1877.

' Locks; and I do hereby declare that the folinduces the oscillation of a struction to the retraction o lowing is a full, clear, and exact description thereof, that will enable Gthers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of ,this specification.

The object of my invention is to construct a time-lock, and to combine it with the multiple sliding bolt-work of a safe or' vault door, so that, by the continuous movement of its time mechanism, locking and unlocking will be effected daily or periodically; and to provide said lock with adjustable devices for regulatin g and controlling the hoursof both locking and unlocking; and to combine with saiddaily unlocking devices a device for prevent ing the unlocking of the lock every seventh day, or whenever desired, for a period greater than twenty-four hours.

I provide two time-movements, which re volve a graduated dial, so constructed and arranged that its motion oscillates, at certain regular determinable intervals, a pivoted bent lever, which, in turn, in one instance, for antomatic locking, lifts the free part of and thus osc" on its stationary pivot a metallic dog'or obstruction, so as to cause it to rest in the-was and prevent the retraction of the slidin b0 t-work, and in the other instance, for automatic unlocking, it merely withdraws its support from under and permits the dog to oscillate by gravity, so as to clear the way and leave an open space for the retraction of the sliding boltwork.

The gist of my invention, therefore, is the combination, in a time-lock of time mechanism revolving a graduated dial, which serves to oscillate a pivoted bent lever, that,in turn, pivoted dog or obthe multiple slidbolt-work.

bordinatetothismainprinciple orchief organization of my time-lock, I provide that .andareboth wiminorrom mwin my dial shall be composite in its construction, whereby I obtain what I term a difl'erential cam for convenience of adjustment, so that various conditions may be met and. tho

'best results in practical operation attained, as

will presently appear more particularly.

I further provide a supplemental adjustable cam-wheel, parallel with and adjoining my dial, which may regularly on Sundays, or at will on holidays, or whenever desirable, temporarily assume one of the functions of my dial, and suspend or prevent its unlocking actiow will also presently appear more partie Referring now to the drawin in aid of a de scription of my lock in detai Figure 1 is a front view of my improved timelock attached to the inside of a safe, adjacent to the hinge part of the safe-door; Fig. 2 a v1ew of the same, partlyin elevation and partly in section, on the line 2 2 of Fig. 1; Fig. 3, a honzontal transverse section thereof on the line 3 3 of Fig. 1, with the upper time-movements removed, showing a plan of the locking mechfastened to the inside F 01' a safe, adjacent to thehinged part of the safe-door G. j time-movements, through the wheels and ratchets K and-L wheels H andll in the direction oi the armws thereon. These wheels H and [rotate once in twelve hours,

Misrotated onlyonoea day. Itwill seen thatboth. time-movementsv work together in .imnin thewheel and operstsths lock; titeithfiaecidnn to the common wheelM,

to rotate the wheel M and operate the lock,

. wheel 1?, and wheel 0 has three andahalf times as many teeth as wheel N. Therefore, while wheel M revolves once in a day, it only causes wheel A to revolve once in seven days. The wheel 0, which is graduated for the hours of the day, is fastened rigidly upon the hub a by means of the projection b, and

rotates with it. Loose on ihe same hub is the wheel B, which may be fastened by frici infliflieren Positions by the thumb-screw Q,.that is attached to or forms part of the wheel B, and passes through. the slot 0 of the wheel C.

pp 111219 designate pivots on which the several wheels revolve. The wheel B is cut away on its periphery, leaving the depression d and thecam-projection e, and the periphery of wheel 0 is similarly cut away, leaving the depression 1'' and the cam-projection g ofthe same form and 'size'as the depression and projection of the wheel 3. When these two wheels are fastened together by the thumb-screw Q, side by side, they'form one wheel or dial, having a. epressiou, h, which may be enlarged or diminished by rotating the wheel B by meansof 'the thumb-screw, and. then setting it, and also having a cam or projection, i, which may be enlarged or diminishedin the same manner. Pivoted near its middle to the lock-case is the bent lever B, one arm of which carries the friction-rollers, and is lifted by the cam i, revolving under the roller at the cams inclined plane it, and at the same time the other arm,

ofsaid lever lifts, the dog-V, pivoted at I, up behi'ndthe door-bolts W \V W W in to the pglsition shown in Fig, 5, thereby locking the ts forward behind thc-jamb of the safe, so

. that the door cannot be opened. In due time, the, cam i ierotated entirely from under th''roller S,'the latter will drop into the depression h at the inclined plane m which alow's the dog V to fall from behind the safe.- bolts, when theymay be retracted and the safe-opened;

It be noted that the dog always tends to'tum on its pivot' automatically bygravity, so' as to present a free space for the retraction of the bolt-work,and it is held up only for predetermined periods,.tobe measured by the time'mechanism byth'e bent lever.

The seventh-day wheel A has on itd'periphery cam-projection, n, which rotates once while the depression 7- rotates seven times, as described, andit is so arranged relatively to the depression it that on every seventh revolution thereof it is brought under the roller S, and holds up the lever B while the depression h passes under it, so that every seventh day this projection it prevents the safe from being unlocked.

From the foregoing description the mode of operation will be obvious. The time-move ments should be set to true time by bringing the hourmark on the dial C under the roller S, which is readily done by turning the dial, as the wheels A, B, C, and M turn freely in the direction of the arrow on wheel 0, because the ratchets behind wheels H and 1 do not interfere with motion in that direction, buttake up and, through the force of the time-movements, proceed with whatever advance of said wheels may be made. The lock should then be set to lock up at any given hour byloosening the thumb-screw Q and tuning the inclined plane it of the wheel 13 to the mark of the required hour, and then fastening the wheels B and 0 together by setting the\humb-screw Q. The dial will then indicate the time of locking and unlocking, and the operation of the time-movements will cause the oscillation of the dog into position to obstruct the retraction of the bolt-work in alittle time, or at whatever time may have been decided upon, and it will be held there until the time arrives for unlockmovements will withdraw itssupport, and it will fall out of the way.

given amount of time earlier than the set time-say nine oclock-the wheel 0 must be turned, as described, until the time indicated under the roller shall be that amount fast of the true time, the closing-mark being altered, if desired, to suit the case. If it is desired to open later, the clocks must be stopped until they are slow of time as much as it is desired the lock shall open later than the set time, correcting the closing-mark, if desired.

shall bein position to come under the roller S and keep the lock from opening on Sunday, it will continue to do so on Sunday each week, if the time -move1nents run on unchanged. Thus the necessity for setting the mechanism on each Saturday, so that it shall keep the safe looked over Sunday, is obviated, which is a great convenience to bankers, and is, furthermore, a security against neglect to set the mechanism weekly, which might sometimes occur. In case it shall be desired that the lock shall not open for a holiday or other day, the said wheels may be rotated until the camroller S and hold up the lever It on such day.

The lock is aflixed to the side F of the safe, as described, to avoid derangement or stoppage of the time-movements by concussion on the door; but it is obvious that it may be aflixcd to the door without modifying its construction, if desired, that being merely a than go of location.

It. is evident that the dog'V and the lever B.

may be one and the same piece. The object .ing, when the continued operation of the time If it is desired to have the safe opened any If the wheels A, B, O, and M are turned, as 4 described, until the cam part'n of the wheelA projection n is in position to come under the 70. LOCKS,

Search Room weight of the part V which depends upon the pivot I from adding to the labor of the timemovements, and also to make the dog or obstruetion entirely distinct from the time mechanism.

I am aware of the patent granted to \Villiams and Oummings,No. 17 ,245, and dated May 5, 1857, and do not claim anything shown therein, but intend to limit my claims to comprehend only the improvements I have made over the peculiar combinations shown in that patent, whereby I reduce the number, modify the construction, change the relative position and mode of operation of the parts, and simplify my mechanical organization, as will fully appear by comparison.

, What I claim as my invention is l. The combinatlon,"substantlally as above set forth, of the adjustable mechanism for continuously locking and unlocking daily the time-movements, and a device for preventing unlocking during a period greater than twentyfour hours.

2. In a time-lock, the combination, substantially as above set forth, of the time-movements and an adjustable device for determining the time of locking.

3. The combination with the time movements, of the wheels I, the ratchets K L, and the common wheel M, arranged as described, for the uipossset forth.

4. In combination with the dial, the seventhday cam-wheel A, adjustable as described, to

prevent the falling of the bent lever B and dog V, either periodically or at required times, as described.

5. The combination, in a time-lock, of time mechanism, a revolving graduated dial actuated thereby, a bent lever oscillated by the revolution of the dial on an immovable pivot, and a dog or'obstruction, also oscillated on an immovable pivot, the lever and dog being so arranged that when one arm of the lever is pushed aside at a predetermined time by the revolution of the dial the other arm withdraws its support from imder and permits the do g to turn by gravity, thereby leaving a free space for the retraction of the bolt-work, substantially as described.

6. The combination of multiple slidingboltwork, a dog or obstruction oscillated on an mmovable pivot, and tending, by gravity, to turn so as not to dog the bolt-work, a bent lever, oscillated also on an immovable pivot, for holding the dog in position against gravity to dog the bolt-work, a revolving graduated dial, which. by its revolution at a predetermined time, oscillates the bent lever and time mechanism that actuates the dial, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this 12th day of December, 1877. I

SAMUEL A. LITTLE. Witnesses:

P. B. Woonwmn, CHAS. Emma.

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