US1882763A - Indicating device - Google Patents

Description

Oct. 18, 1932. J. w, BRYCE 1,882,763

INDICAIING DEVICE Filed Jan. 15. 1927 Patented Oct. 18, 1932 UNITED STATES PATENT OFFICE JAMES W. BRYCE, OF BLOOMFIELD, NEW JERSEY, ASSIGNOR T INTERNATIONAL TIME RECORDING COMPANY OF NEW YORK, OF ENDIGOIT, NEW YORK, A CORPORATION GJ NEW YORK INDICATING DEVICE This invention relates to docks and more particularly to docks of the non-pendulum type such as escapement spring docks and the like.

In the ordinary non-pendulum type of docks in order to ascertain whether the dock is functioning it is usually necessary for an observer to watch the dock until he secs the hands move. This method utilizes time and also is very tedious.

\ the non-pendulum type is functioning.

Another object is to provide an indicating pendulum for a non-pendulum type of dock actuated by the dock mechanism. 9 Other objects and advantages of my invent-ion will be obvious from the following particular description embodying the inven-' tion and of the accompanying drawing in which Fig. 1 is a front elevational view of a secondary dock showing my pendulum device applied thereto and also the aperture through which the indicator on the pendulum may be viewed.

Fig. 2 is a rear elevational view of a secondary dock mechanism with parts omitted and disdosing means for operating the pendulum.

Fig. 3 is a fragmentary side devational view partly in section showing the pendulum mechanism.

Fig. 4 is a perspective of the upper portion of the pendulum mechanism shown in Fig. 2 disclosing the means for hanging same on the dock.

Referring more particularly to the drawing, the operation of my penduium mechanism may be readily understood from Fig. 2 in which is disdosed a secondar movement. The motive power for actuating tiie secondary movement comprises a magnet 1 coacting with an armature 2 pivoted at 20 and he1d away from the cores of the magnet by spring 3. Eriergization of. magnet 1 attracts the armaturc 2 which has afiixed thereto an arm 2a on which is pivotally mounted at 26 an actuating pawl 4. This pawl normally rests in one of the notches at 4a of the ratchet wheel 5 and as soon as the armature 2 is attracted by the magnet 1 the pawl is carried into the next or adjacent notch. Upon deenergization of the magnet the armature 2 returns to its normal position under the influence of its spring 3, rotating the ratchet wheel 5 a distance of one notch. A retaining pawl 6, biased by a spring 7 is provided to hold the ratchet wheel 5 in the position to which it has been turned by the aotuating pawl 4. Associated with the ratchet wheel 5 is the usual dock mechanism including reduction gearing etc. for operating the hands of the dock.

Referring now also to Fig. 3 my indicating 3endulum mechanism is disdosed as comprising a pendulum arm 8 to which is afiixed at its loWer end a pendulum weight forming a target or indicator 9 which may be viewed by an observer through an aperture 10 in the dial of the dock (sec Figs. 1 and 3) indicatingwhether the dock is running. Fixed at 11 to the supporting plate 12 of the dock is a stud 13 which has knife edges 14 and 14 respectively (ses Figs. 3 and 4) -upon which the arms 15 and 15 of the pendulum arm 8 rest. An extension arm 16 fixed to the pendulum arm 8 is provided with an adjusting counterbalance weight 17 (sec Figs. 2, 3 and 4) This weight is simply provided for baiancing the target or indicator 9.

Fixed to the armature 2 by means of a screw 18 is an upwardly extending rod 19 which is bent at its upper end so that the lateral projection 20 lies at right angles to the pendulum 8 and Will, when the arm 19 is actuated strike the pendulum arm 8 at 21 causing the pendulum t0 oscillate. The magnet 1 is energized often enough so that these impacts will keep the pendulum 8 continually oscillating as long as the secondary dock is ronning.

In order that the' motion of the indicator or target 9 may be readily visible it may bear a color contrasting with the color of the dial or any other suitable arrangement may be employed for showing that the target is in metion.

My invention is capable of a wide variation and relationship of parts without departure from the nature and principle thcreof, and I do not restrict myself unessentially in the foregoing or other particulars, but contemplate such alterations and modifications within the scope of the appended claims as may be found advisable.

I claim:

1. In a clock having a dial, indicating hands cooperating therewith, and magnetic means for moving the hands; means for indicating that the dock is runnin said indi- L catmgg; means compms1ng an element substantiallfree of effect on the indicating hands and means operated by sai d magnetic means for regularly, periodically actuating said clement.

2. In an instrument having an electrical source, a magnat for recciving periodic impulses from said elcctrical source, time indicating devices operatcd entirely under control of said magnet; means for indicating that the magnet is recciving said impulses, said means comprising a pendulous element and mcans opcrated by the magnet for periodicaily m0ving said element, said element being independent of the clectrical source and ineffective to control the reception of impulses by the magnet.

3. In a time indicating mechanism, a dial and time indicating hands coopcrating therewith, magnetic mcans for advancing said indicating hands, a" periodic timed impulse source external to said indicating mcchanism, said magnetic means receiving timed period impulses frozm said source, au indicating device actuated by the advancing action of said magnetic means, said indicator being mounted t0 swing freely under the action of gravity during the quiescent period of the time indicating mechanism.

4. In an electric dock, time indicating means, magnetically operated mechanism for periodicaiiy advancing said time indicating means, a source of periodic electric impulsea, a driving magnet thereforenergized by said periodic electric impulses, and an indicacing dcvice controlled by said magnet to operate during the pcriod 0f inactivity of said magnetically operated mechanism t0 indicate that the magnet is receiving said periodic impulses.

5. In an electric dock, a dial and time indicating hands associatcd therewith, a magnetically opcrated mechanism for advancing the time indicating hands, an osciliatin pendulous member periodically actuated by the periodic operacion of the magnetically signature.

JAMES W. BRYCE.

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