US296561A - Time-lock - Google Patents

Description

M. c. HAWKINS.

TIME oon. No. 296.561. Patented Apr. 8, 1884."

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M ATTURNBYS;

N. PiTEfli Plmmuzna nuher. Wahinginn. u c.

MOSES CHAMPEN HAXVKINS, OF

TIME- ATEN'r EDINBOROUGH, PENNSYLVANIA,

LOCK.

SPECIFICATION forming part of Letters Patent No. 296,561, dated April 8, 1884.

Application filed Jnly'ZS. 1883. (ModeL) To caZZ whom it may concern."

Be it known that I, Mosns Gnnnrnn HAW- KINS, of Edinborough, in the county of Erie and State of Pennsylvania, have invented a new and Improved TimeLock, of which the following is a full, clear, and exact description.

Figure 1 is a side elevation of myimproved time-lock. Fig.2 is an end elevation. Fig. 3 shows the center arbor and pinion, and Figs. d and 5 are respectively views of the center pinion and carrying-nut.

The object of this invention is to insure the release of the lock-bolt at the prescribed moment, and also to release the bolt in case of breakage of the spring of the time-movement.

The invention consists, mainly, in what I call an accident'lever, provided with two pawls, one engaging a ratchet on the goingbarrehand the other engaging a stationary ratchet, the said lever being provided with an inclined surface for engaging the time-catch when the accident-lever is thrown forward by the recoil of the going'barrel on the breaking of a spring.

In the drawings, in which the same letters of reference indicate the same parts in the different figures, A is the tumbler of an ordinary combination-lock; B, the sliding bolt, having the usual projection, a, for entering the notch oi the tumbler; and O is a latch turning on the pivot 12, and capable of engaging the pin a, projecting from the side of the bolt B. The latch G is provided with theshort downwardly-projecting beveled arm cl, and at the extremity of its free end there is a roller, e, on a pin projecting horizontally from the face of the latch. The time-movement 1) is provided with a pin-wheel, 1*], driven by a in the usual way.

Upon the arbor F is loosely placed a sleeve, 71, between the ratchet-wheel i and the collar 1 j. The center wheel, is, is fixed to the end of the sleeve, and carries a spring-acted pawl, Z, which engages the ratchet-wheel On the sleeve it is loosely placed the center pinion, m, the said pinion being provided with a lug, n, which is engaged by a similar lug, 0, on the nut 12. The wheel G on the goingbarrel H engages the pinion m, and also carries a ratchet-wheel, g, which is engaged by a spring-acted pawl, 2', carried by the arm I, which is fixed to a shaft, 3, journaled in the frame of the time-movement D, and carrying upon its inner end the accident-lever K, the upper end of which is inclined toward the pivot b of the latch O, and terminates in a hook, s. Afixed arm, L, having on its ,11131361 edge a series of ratchet-teeth, projects from one side of the time-movement frame in position to engage the spring-acted hooked pawl 2, carried by the arm K on the side opposite the pawl 1'. 1

In the normal working of the lock, the on of the arm (1, projecting from the latch. C, raises the said latch above the pin 0 at the prescribed time, so that the lock' may be our locked in the usual manner. In case the spring breaks I employ the recoil of the spring to raise the latch C and liberate the bolt.

I have found by experience and investiga tion that in the great majority of cases the breakage of springs occurs in the inner coils. This being the case, the force of the recoil comes mainly on the going barrel. The re verse motion of the going-barrel caused by the recoil of the spring carries forward the pawl r and the lever I, also the accident-lever K, when the inclined surface of the said accidentlever strikes the roller 0 on the latch G and raises the latch. At the same time the hooked pawl t engages the ratchetteeth of the arm L,

in a released position, so that the combinationany one having the combination. Any effect of the recoil of the spring on the gearing of the time-movement is prevented by the free rotation of the pinion m on its sleeve in the reverse direction for the greater portion of a revolution, and the subsequent unscrewing of the nut p when the lug nof the pinion m strikes the lug o of the nut p. The free retrogagement of the pin 5/ with the inclined face and retains the accident-lever and the latch (l lock can at any time thereafter be opened by 7 grade revolution of the pinion m for the greater patent that may be granted upon this appli- :25-

portion of a revolution permits the mostv of the force of the recoil to be exerted 011 the aecident-lever, insuring its quick and certain action on the latch O.

The center arbor, F, is driven by the e11- gagement of the pawl Zon the wheel 7- with the ratchet-wheel t, fixed on the arbor. This arrangement admits of turning the arbor forward at any time for the purpose of adjustment; Y

I do not limit my invention to the precise form shown in the drawings, as it may be modified without departing from the spirit of my invention. For example, the pin g in the Wheel. E may be made adjustable in a circular slot in the wheel, instead of being placed in the different holes, and the pawls r I may be placed directly on the accident-lever instead of the arm I.

I do not abandon or dedicate to the public any patentable feature set forth herein and not hereinafter claimed, but reserve the right .to claim the same either in a reissue of any cation or in any other applications for Letters Patent I may make.

Having thus described my invention, I claim as new and desire to secure by Letters l?atent l. The combination, with the slide-bolt B, having a side pin, 0, of the latch O, engaging said pin, turning on a pivot, b, and having a downu 'ardlyprojecting beveled arm, (I, and a roller, 0, ona pin projecting horizontally from the face of the latch, a time-movement having the pin-wheel E, the gear f F, and the pin 9, wherebythe latch may be raised and the bolt released at any desired time, as described.

2. Thecombination, with the going-barrel and time-catch of an accident-lever, two springpawls on arms I K, a ratchet on the going-barrel, and a stationary ratchet, said lever having an inclined surface to engage with said time-catch, as and for the purpose specified,

MOSES GHAMPEi HAWKINS. Vitnesses:

ALONZO PERRY, RUFUs E. HAWKINS.

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