US689128A - Automatic electromagnetic time-switch. - Google Patents

Description

' Nu. 689,!28. Patented Dec. l7, 190i. J. SACHS."

' AUTOMATIG ELECTROMAGNETIC TIMESWITGH.

A 'ncazinn flled Sept. 21, 1900.

(No mam WiT[\JE55E5 NVENTUE ATTY-E THE NORRIS PETERS cov. PHOTO-LITHQ, WASNINOTON, 04 c.

. o by the spring I) through the ratchet c, acted arms g 9'.

UNITED, STATES FFICE.

' ATENT JOSEPH sAoHs, or HARTFORD, oonnnoricur.

SPECIFICATION forming part of Letters Patent No. 689,128, dated December 17, 1901.

Application filed eptember 27, 1900. Serial No 31,239. (No model.)

To all whom it may concern:

Be it known that I, J OSEPH SAcHs, residing atHartford, in'the county of Hartford and State of Connecticut, haveinvented a new and useful Improvement in Automatic Electromagnetic Time-Switches, of which the following is a specification.

The object of my invention is to provide a means whereby electric lights, motors, or other translating devices can be automatically connected or disconnected from the source of current-supply at predetermined in-- tervals. Such devices are known as automatic time-switches and in the past. have consisted of clockworks which were arranged to release at certain time intervals another clockwork or spring motor mechanism which operated the circuit 1 controlling switches. Aside from the disadvantage due to the necessity for regular winding the many deficiencies of a spring clock mechanism of the size necessary for the operation of large switches are obvious.

In my invention I eliminate the necessity for manual winding and also provide-means for the operation of the switches which are free of the disadvantage of springs. I accom plish this result by means of a proper electromagnet or motor which is connected in circuit at the desired intervals, and when so connected and, energized it operates the circuitcontrolling switch and at the same time effects the winding or other operation neces g sary to work the timing device or clock mechanism. While various arrangements of the necessary elements may be made, I have shown one in the drawing which embodies the elements of my invention.

In the drawing I have represented my invention by a diagrammatic view.

' a represents'a small clock which is wound upon by the pawl d. One of the spindles in thetrain ofthis clock has a contacharm e attached and so regulated that this arm makes one complete revolution every twenty-four hours. This contact arm e coacts with the contacts ff, which by means of suitable setscrews can be located in difi erent positions in the circle of the travel of the arm 6. This is accomplished by shifting them on the curved .to regulate the time consumed by the arm 6 in moving from the contactfto the contactf.

h h are the spools of an electromagnet, having double windings and arms n and rt, that are of iron and that are part of the magnetic circuit of the magnet. The two'iron coresm m of the magnet are connected together by the brass rod 0, so that they move as one; but when one is pulled into its coil the other is consequently pushed out, and, vice versa. The lower core in has a cross-arm 19 attached. One end of this cross-arm is connected by a suitable link to the operating-leverr of the switch 7', which is of the well-known knifeblade type. This switch is mounted on an insulating-base tand fastened to the iron arm n. The blade of the moving switch swings on the pivot r and is a part of the lever r, so that a movement'of thelever correspondingly causes a movement of the switch-blade in or out of its contact r on the base 25. The other end of the cross-arm 19 has pivotally c011- nected to it the pawl d. One end of this pawl engages with the ratchet 0, so that a downward movement of thepawl causes the spring to be wound up, and I prefer to gear up from the spring-spindle to the ratchet, so that a slight movement of the ratchet causes quite a large movement of the spring-spindle.

' Various other arrangements for winding the spring may be employed and actuated by the reciprocating movement of the core m.

The tooth of the pawl d is kept tightly against the ratchet by the spring (Z pulling on the other end. lhe windings of the magnet are connected, respectively, to the curved sectors g and g, so that when the movingarm 6 comes in contact with either of the contacts for f the connections are such that one of the armatu re-eoils is connected across the circuit composed of the wires 8 and s, which come from the source of supply and feed the lamps o with the current. The wire 3, however, passes to the switch r, and the circuit is therefore controlled by its action.

8 and s are binding-posts.

It will be noticed that the current passing through the coil of the spool It causes an upward movement of the cores m and m and an opening of the switch r through the arm 0", while a current passing through the spool h By this arrangement it is possible causes a downward movement of the cores and a closing of the switch and also a rotation of the spring-winding ratchet.

The operation of the complete device is now as follows: The arm a has passed the contact f and by closing the circuit of the spool 70 closes the switch and moves theratchet. After thus leaving the current on the circuitfor a definite time the arm 6 is about to come in connection with the contact f. When this connection is made in the course of the arms movement, the spool h will be energized and the core m drawn up, causing the motion to be transmitted through the arm 0 to the switch and opening it. At the. same time the pawl (Z will be raised and placed in a new position on the ratchet, so that the next downward movement rotates the ratchet. In this way it. will be seen that the switch 1* is opened and closed at predetermined intervals, and the timing-clock is wound by the same energy that causes a motion of the switch.

Various modifications are possible in the arrangement of the magnets, the connection to the switch and its construction, the winding device, and the contact-arm e and contacts f and 1. My invention is not limited to the detail construction of anyofthese parts,

' but broadly covers the electromagnetic operation of a circuit-controller at predetermined intervals controlled by a suitable clock or other timing device, which is energized by the same energy, causing an operation of the circuit-controller.

I claim as my invention- 1. In an automatic electric-circuit controller, the combination with an electromagnetic mechanism, of a time mechanism, contact devices, electrical circuits between said contact devices and the electromagnetic mechanism, means actuated by said time mechanism to automatically operate the said circuits to the electromagnetic mechanism, an external electric circuit independent of the said circuits to the magnets, means actuated by said electromagnetic mechanism to simultaneously operate the said external circuit and wind the said time mechanism, substantially as set forth.

2. In an automatic electric-circuit controller, the combination with an electromagnetic mechanism, of a time mechanism, contact devices, electrical circuits between said contact devices and the electromagnetic mechanism, means actuated by said time mechanism to automatically operate the said circuits to the electromagnetic mechanism, an external electric circuit independent of the said circuits to the magnets, a switch in said external circuit, means actuated by the electromagnetic mechanism to operate said switchand means also and simultaneously actuated by said electromagnetic mechanism to Wind the said time mechanism, substantially as set forth.

3. In an automatic electric-circuit controller, the combination with an electromagnetic mechanism, of a time mechanism, contact de- .and means actuated by the said electromagnetic mechanism to wind the said time mechanism simultaneously with the operation of said switch, substantially as set forth.

4. In an automatic electric-circuit controller, the combination with an electromagnetic mechanism, of a time mechanism, contact devices, electrical circuits between said contact devices and the electromagnetic mechanism, means actuated by said time mechanism to automatically operate the said circuits to the electromagnetic mechanism, an external electric circuit independent of the said circuits to the magnets, a bar-switch with an end extension, andoperated by the said electromagnetic mechanism, an arm connected to an end of the cores of said mechanism, a link connecting the said arm and the said extension of the bar-switch whereby the switch is operated by the said electromagnetic mechanism, and paWLand-ratchet devices connected to the said arm and time mechanism respectively whereby the said time mechanism is wound simultaneously with the operation of said switch, substantially as set forth.

5. In an automatic electric-circuit controller, the combination with two electromagnets, of a time mechanism, contact devices, electrical circuits between said contact devices and the two electromagnets, means actuated by said time mechanism to automatically operate the said circuits to the two electromagnets, an external electric circuit independent of the said circuits to the magnets, a barswitch with an end extension and operated by the said two electromagnets, an arm connected to an end of the cores of said two electromagnets, a link connecting the said arm and the said extension of the bar switch whereby the switch is operated by the said two electromagnets, and pawl-and-ratchet devices connected to the said arm and time mechanism respectively whereby the said time mechanism is wound simultaneously with the operation of said switch, substantially as set forth.

Signed by me this 25th day of September, 1900.

JOSEPH SACHS.

Witnessesz.

GEO. T. PINCKNEY, BERTHA M. ALLEN.

ITO

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