US309001A - smith - Google Patents

Description

(.No Model.) J E SMITH 2 Sheets-S11eet 1.

CIRCUIT CONTROLLER FOR ELECTRIC CLOCKS .ON TELEPHONE AND OTHER LINES.

No. 300,001. Patented Dec. 0, 1884 AM N (No Model.) 2 Sheets-Sheet 2.

J. E. SMITH. CIRCUIT OONTROLLER .POR ELEGTEIG CLOCKS 0N TELEPHONE AND OTHER LINES. E

No. 309,001. Patented Dec. 9, 1884.

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UNiTnn STATT s JOHN E. SMITH, OF NElV YORK, N. Y.,

ASSIGXOR TO THE GOLD AND STOCK TELEGRAPH COMPANY, OF SAME PLACE.

CIRCUIT-CONTROLLER FOR ELECTRIC CLOCKS ON TELEPHONE AND OTHER LINES.

SPECIFICATION forming part of Letters Patent No. 309,001, dated December 9, 1884.

Application lilcd Mai ch 29, 1883.

To all whom it may concern:

Be it known that I, J OHN E. Sn'rrn, of the city, county, and State of New York, have invented a new and useful improvement in apparatus for controlling electric circuits which are used both for controlling clocks and to r operating telephonic or other lines or apparatus, of which the following is a specification, rel' erence being had to the accompanying drawings.

In another application, Serial No. 59,786, filed on the same date herewith, l have de scribed a method of and means {or setting and synchronizing clocks connected with electric circuits primarily and ordinarily used for other purposes, and on which the usual currents are all of one polarity. In that method I employ polarized shunts which keep the usual currents diverted from the clocks until the moment arrives for their correction, when a reversed current, by its action on the shunts, lets the clocks into circuit, and it not indicating the right time putsthem into unison with a standard-time piece.

My present invention is for the correction of clocks connected with circuits primarily used for other purposes, but on which currents of either the same polarity or opposite polarities do the usual work.

Briefly stated, it consists in the combinat ion,

with devices for setting clocks by electricity and other electrical apparatus, oi'no 1 i-p olarizcd electromagnetic shunts, which, during the ordinary use of the line or lines, keep the several clock-setting devices shunted, but bring them into circuit for synchronizing the clocks by the action of a rc-enl'orcing or a stronger current than that employed to do the ordinary work of the line-or lines.

Figure l in the drawings is a diagram showing my invention as applied to [our similar circuits radiating from a central station from which the several clocks in such circuits are to be corrected. Fig. 2 exhibits a modifica tion of the method of applying the bat tery.

The apparatus at central station A. necessary to be considered in connection with my invention is shown in Fig. 1, in which a is the switch-board, with which the several. lines, 7) I) b 7/, connect, and through which they also (No model.)

connect with the earth or return-circuit c by means of a switch, d. The other end of each of these lines connects with the earth or return-circuit c, as is well understood. Each of the four divisions B B B B of the diagram shows a clock, a shunt, and other electrical apparatus connected in a circuit in accordance with my invention. These four divisions being exactly alike, a description of one will describe all of them. Referring to either of said divisions, c is a clock, 7t is telephonic or other apparatus operated by currents of any polarity, and *7 an electro-magnet of a nonpolarized shunt, all situated in circuit b. The armaturelever 7;, when moved by the magnet 17, makes electrical contactwith screw 7, and like contact with screw m when moved by the retractingspring n. A shunt of this description may be made by taking such a magnet as is commonly used for connecting the main and the local circuits in the Morse telegraph and adding to it the electrical contactscrew m, and therefore I make no claim to such a shuntinginstrument. A wire, 0, connects armature-lever 7.: with circuit 7) be tween clock 0 and the telephonic or other apparatus, 7t, wire r connects screws on to said circuit on the other side of said clock, and a third wire, joins screw Z to said circuit at a point between magnet '13 and apparatus 71. Thus wires 0 1' form a shunt-circuit to the magnet for operating the device for setting the clock 0, while a shunt-circuitto apparatus h is formed by wires 0 c.

The correcting or setting devices applied to the clock are the same as those full y described in my application No. 89,786, and to which reference has been hercinbcl'ore made.

Durin g the operation oi apparatus h, and between the limes at which the clock is to be corrected, spring it must have sullicient tension tohold lever 7. against screw m, and thus keep the clock shunted, and at the same time, it apparatus 7i is a telephone or other inst-rumcnt worked by magneto and not by voltaic currents, switch (1 connects directly to the earth or return circuit as shown in plain lines in Fig. 1.

To correct the clock, the switch (7 or its equivalent is moved (by hand or by a sta ndardtime piece) to a position as shown by dotted lines, so as to bring into circuit Z) a battery, 1 whose current is powerful enough to overcome the tension of spring a, and thus cause lever 75 to close circuit 0 s, shunting apparatus 71, and at the'same time to break shunt-circuit 0 0', let clock 0 into circuit, and set it to correct time, as fully set forth in Case A.

When apparatus h is a printirig-telegraph or any other instrument operated by voltaic currents of any polarity, the switch, battery, and earth or return circuit should be arranged substantially as shown in Fig. 2. \Yhile such instrument is in use, the switch (I connects circuits 6 Z) Z) 7/ to a portion of battery 25, suiticient for its operation, and during such operation spring a must have tension enough to keep the clock shunted. .Vhen the clock is to be corrected, switch (Z moved to the position shown in dotted lines in Fig. This movement connects the whole of battery '6 to said circuit, and the roent'orced current overcomes spring a, shunts the printer or other apparatus, and lets into circuit and corrects the clock, as hereinbet'ore described.

Though I have shown but one set of apparatus in each circuit, it is evident that there may be several sets, and all simultaneously open ated in the same manner. 1' will also point out that if there should be but one shunt and one apparatus 7: in a building, several clocks in ditferentparts otsuch building might be placed in that circuitand allot them corrected as one clock by the action of that one shunt. In such a case one re-enforced current sutlicient to operate the shunt might be sent through the circuit asecond or two before the time for setting the clocks, and then at the exact hour a still stronger current sent to act on the clocks with sut'ticient power to correct them.

It will be seen that by the use of shunts with soltiron armaturcs, as herein described, and

operated by re-enl'orccd currents, or currents stronger than those employed for the other uses of the circuits than that of setting clocks, several main batteries may be used on such circuits.

The current for operating the shunts and setting the clocks may be augmented byshunting resistance from the line, as well as by the addition ot'battery or increase ot'electro-1notive force, and Iregard such shunting of resistance from the line as equivalent to augmenting or rc-cnt'orcing the battery power thereon.

\Vhat I claim. as my invention, and desire to secure by Letters Patent, is-

1. The combination, with and directly in a main electric circuit oftelegraphic, telephonic, or other apparatus, of an electro-niagnet for setting a clock and a magnet for operating a shunt t'or diverting the current from the clocksetting magnet or from the telegraphic, telephonic, or other apparatus, theshunting-lever.- being in a circuit which branches from the main circuit at a point between the clock-setting magnet and the telegraphic, telephonic, or other apparatus, substantially as herein described.

2. The co1nbination,with an electric circuit employed for telegraphic, telephonic, or other uses, ot a clock, a device for setting said clock, an electro-magnet in said circuit for operating said setting device, a nonpolarized shunt for directing the current through said magnet or through said telegraphic, telephonic, or other apparatus, a battery for producing a re-cnt'ore ing or stronger current than that used for the other uses than that of setting the clocks, and a switch for connecting said battery with the circuit, substantially as herein described.

JOHN E. SMITH.

Witnesses:

HENRY T. Bnowx, Fnnrnt. lllYNF/S.

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