US522724A - von orth - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. L. VON ORTH. ELECTRIC SYNOHRONIZER FOR CLOCKS No. 522,724.

Patented July 10, 1894.

Inventor:

Wiamasses:

LudwigvonOcih m (No Model.) 2 Sheets-Sheet 2. L. VON ORTH. ELECTRIC SYNGHRONIZER FOR CLOCKS. No. 522,724.

Patented July 10, 1894.

INVENTORI Lu dwig mm Orck, BY

WITNESSES an UNITED STATES PATENT CFFIGE.

LUDWIG VON ORTH, OF BERLIN, GERMANY.

ELECTRIC SYNCHRONIZER FOR CLOCKS.

SPECIFICATION forming part of Letters Patent No. 522,724, dated July 10, 1894. Application filed May 6,1892. Serial No, 43Z,05 8| (No model.

To aZZ whom it may concern.-

Be it known that I, LUDWIG VON ORTH, a subject of the King of WViirtemberg, residing at Berlin, in the Kingdom of Prussia, Germany,have invented new and useful Improvements in Synchronizers for Clocks, of which the following is a specification.

My invention has for its object to synchronize electrically from a standard or master clock; a series of secondary clocks regulated to run fast,=-and it consists in certain novel features in the construction of the secondary clocks to be hereinafter described with reference to the annexed drawings, in which- Figure 1 represents a rear elevation of a secondary clock embodying my invention, part being broken away. Fig. 2 is a side view of the same. Fig. 3 is a front elevation of a modified form, and Fig. 4; is a side view of Fig. 3. Fig. 5 is arear elevation showing the pendulum and verge rod disconnected.

Similar letters of reference designate correspondingpartsthroughout theseveral views of the drawings.

I will now proceed to describe the construction of the secondary clock, reference being had for the present to Figs. 1 and 2 of the drawings, in which the letter .9 designates the arbor of the pallet lever, 19, the pendulum, and i the verge rod. The connection between the pendulum and the verge rod is made in such a manner that it can be broken while the movement is in operation and the pendulum continues to swing, while the verge rod is held stationary and the motion of the train consequently arrested. To this end the verge rod, instead of terminatingin afork, as usual, has pivoted thereto a lever 7c Z, the bent arm of which extends through an opening in the pendulum rod and engages with a horizontal pin 13' made fast in the pendulum rod. Since normally the bent arm 70 partially embraces the pin 19, and the arm Z being weighted, an operative connection is established between the verge rod and the pendulum rod. Beneath the lever 7t Z is located a lever d, mounted upon a rock-shaft f and carrying at one end an armature e arranged opposite to an electromagnet E. The opposite end of armature lever (Z carries a tooth g arranged opposite to the arm Zof thelever 7.: Z, which arm is toothed for apurpose hereinafter to be described. On

the rock-shaft f is also mounted an arm h having at its end a nose h arranged opposite to the periphery of a cam I) mounted on one of the arbors of the train. The cam is so set with respect to nose It that only a limited motion of lever d is permitted to take place for some time before the hour ;-however when the hands of the clock are at the hour,at which period the nose 0 of the cam has passed below the nose h'-the arm h, and consequently, lever d can be turned to the full extent.

In practice the secondary clocks are regulated to run fastsay from ten to sixty seconds per day in case they are to be synchronized once a day.

The electro-magnets E of the several secondary clocks are included in the circuit controlled by the master clock P, Fig. 5. The master clock, which maybe of any usual construction, has its circuit closer arranged to close the circuit of the secondary clocks, at a short time-say sixty seconds-before the hour as indicated by said master clock-and to break it at the exact hour.

Assuming the case that the secondary clock is thirty seconds fast, and that the circuit at the master clock is closed at one minute of the hour as indicated by said master clock. The secondary clock being thirty seconds fast at this period, the hands of said secondary clock are at thirty seconds of 12. The position of cam b prevents the verge rod from be ing disconnected from the pendulum; when, however, the hands of the clock (secondary) point to 12, this disconnection takes place and the motion of the secondary clock is arrested Fig. 5. At 12 oclock, as indicated by the master-clock the circuit through electromagnet E is broken and the connection of pendulum rod and verge rod reestablished by the release of the latter.

The disconnection of pendulum and verge rods is effected by tooth g of lever d engaging with the toothed arm Z of lever 70 Z, and holding said lever while the pendulum, in view of its inertia, continues to oscillate. If

at the instant that tooth g engages with the arm Z, the pendulum is not at the end of its vibration to the right of Fig 1, the next succeeding vibration in that direction forces the Verge rod outwardly where it is then held stationary. When the tooth g releases arm 70 Z, the latter turns about its pivot and again engages pin 19.

In the modification illustrated in Figs. 3 and 4, I have shown the verge-rod 2' constructed to engage with the pendulum rod fromoneside thereof and tobe retainedagainst the latter under ordinary conditions by a Weighted arm n attached to the arbor of the pallet lever. To the verge rod is secured an armature m adapted to enter the solenoid D. As before, the master clock closes the circuit at some time before the hour (12 oclock) as indicated by said master clock. The solenoid D is, however, cut out of the circuit until the hands of the secondary clock reach 12 m. by means of the circuit closer usually provided for this purpose. WVhen the hands of the secondary clock reach 12 m., the circuit is completed through solenoid D and the armature 'm is attracted, thereby disconnecting the verge rod from the pendulum. At the hour (12 m.) as indicated by the master clock, the circuit is broken by the latter; solenoid D is devitalized and the verge rod again connects witl the pendulum rod. Y

What I claim as new is- 1. In a clock system, a master clock, combined with a secondary clock (one or more) having a separable connection between the verge rod and pendulum and devices, as dethe pendulum, an armature lever cZ adapted to engage with lever 70 Z, an electro-magnet arranged to act on lever d, and a cam 6 adapted to control the motion of lever d, substantially as described.

3. In a time piece, the combination with the pendulum, a verge rod provided with a pivoted lever 76, Z, one arm 7c of which is bent and engages a pin on the pendulum rod, and the other arm Z is provided with teeth, an armature lever cZ adapted to engage with the teeth on arm Z, an electro-magnet arranged to act on lever d, a cam 12, and an arm h h adapted to engage said cam, substantially as described.

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

LU'DWIG VON ORTH.

\Vitnesses:

ADOLF FRANKE, GUSTAV HtiLsMANN.

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