USRE11678E - Electric signaling mechanism - Google Patents

Description

No. ||,s7a. Reissued July I2, I898. L. a. ROWA'ND.

Witnesses. Inventor.

Attorney.

N0. l|,678. Reissued July l2, I898. L. G. RUWAND.

ELECTRIC SIGNALING MECHANISM.

QApplication filed Dec. 15, 1897.)

2 Sheets-Sheet 2.

Witnesses.

a w g Inventor.

Q finm Attorney.

UNITED STATES.

PATENT OFFICE.

LEWIS G. RO\VAND, OF CAMDEN, NE\Y JERSEY.

ELECTRIC SIGNALING MECHANISM.

srnczr'rcnzrron' forming part :of Reissued Letters Patent No. 1 1,678, dated July 12, 1898.

Original No. 593,692, dated November l6 1897 Application for reissue filed December 15, 1897. Serial No- To all whom it may concern.-

Be it known that I, LEWIS G. ROWAND, a citizen of the United States, residing at Camden, county of Camden, and State of-New Jersey, have invented anew and useful Improvement in Electric Signaling Mechanism, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, which form a part of this specification. I

In electric signaling apparatusfor instance, fire-alarm signaling apparatus-the signal given ,bya box on the main circuit is transmitted to the signal in the main station and from there transmitted to the various fire-houses. The object of my invention is to make this transmission or repeating of a signal 011 the main line to branch lines automatically with certainty and to allow suilicient time to enable the signals to be transmitted clearly, and, further, to provide a construction which will enable the translating devices on the branch lines to be in closed circuits and yet not acted on until dictated by the signal given on the main line. I accomplish the first of these by placing in the main circuit in the centralstation an electro- Inagnet the core of which controls a'switch device of the secondary circuit, which latter circuit'includes the signals in the various fire-houses. Further, as the action is very rapid, if the switch acted to close the secondary circuit under the influence of the magnet, I cause the circuit to close in the return movement of the switch under the action of the mechanical device which normally holds it in its retracted position. I further provide means to retard the return movement of this switch, and thus make its operation slower, its closure longer, and its action more certain.

I accomplish that object of my invention which consists in providing a construction of circuits which will enable the translating devices to be in a closed circuit and yet not acted on until dictated by the signal given on the main line by placing the translating devices on the secondary circuit in closedcircuit, and upon the same circuit I place an electromagnet of high resistance which will prevent the current of that circuit acting upon drawings and then point out 1 the translating devices. I provide an open shunt-circuitaround or about this magnet, there being upon that open shunt-circuit a switch controlled by an electromagnet on the main-line circuit, and in order to provide for a test of this secondary circuit and its battery I have a short circuit with a. signal in the central station and provided with a switch controlled by the electromagnet on the secondary circuit, so that when said magnet is energized it holds the switch open, and when for any cause the secondary circuit becomes deranged its magnet is disenergizcd and the switch operated to close the circuit.

I will now describe the embodiment of my invention as illustrated in the accompanying the invention in the claims.

In the drawings, Figure 1 is a view showing twofire -alarn1 circuits provided with boxes and the signal, the main station, the secondary circuit, with its signals, and the switch device controlled by the electromagnets in the main circuit; Figs. 2, 3, 4, 5, 6, and 7 show various forms of switch devices for operating the secondary circuit.

A represents the fire-alarm circuits, having the batteries B and make-and-break boxes 0 C.

E are electromagnets on the circuits A with in the central station.

F is an independent circuithaving f and extending from the central station to the various fire-houses and provided at the desired points with the signals G. Upon the circuit F is an elect'romagnet D of high resistance, which normally prevents the current afit'ecting the signals G.

F is a shunt-circuit about the magnet D. This shunt is normally open and is closed by a switch under the control of the magnet E on the main circuit A, various forms of which switch and method of operation are shown in the various figures.

F is a circuit having the signal F which is controlled by the armature ofthe magnet I).

In Fig. 1 the wire of the circuit F is c011- nected to the pivoted arm II and also to the pivoted arm I. This arm I is secured to or forms part of the armature of the magnet E. t' is a spring holding the arm away from the battery magnet when the magnet is not energized. Connected to the arm I is the projection 11, and 1' is a pivoted arm having the insulated portion 1' the arm H having the cut-away portion h. Also connected to the arm I is the arm i, having projection i and pivoted pawl 7; working on the ratchet i of the balance-wheel i I Taking the devices as'shown in Fig. 1, th

magnet E, being energized, draws the arm I toward it, and the projection i strikes arm 1?, so as to cause the insulated portion '6 to fall into the cut away portion h, which allows the arm H to fall, so that its projecting end is in alinement with the end of the arm I, the arm Ibeing, however, .in that position beyond said arm II. Now when the circuit A is broken the spring 1' moves 'the'arm I away iron: .the magnet, causing-the end of the arm I to strike the end of the arm II, lifting the arm lI'and bringing it intothe position shown in Fig. 1. During the time which the arm I is in contact with the arm II the circuit F is completed and the circuit to the signals G made independent of the magnet D. The movement of the pawl over the ratchet causes the movement of the arm I under the action of the spring '1'. to be retarded, and thus contact between the arm I and the arm II maintained for a longer period.

In the following forms I haveconnected the circuit F direct to the signals instead of the shunt-circuit F.

In the form shown in Fig. 2 the switch mechanism for making and breaking the circuit F consists of the following: an arm J, centrally pivoted. To this arm is connected the wire of the circuit F, the wire also being connected to the binding-postj in line with the end of the arm J in its movement in one direction,

and j is a stop in line with the same end of the arm J in its movement in the other direction. The opposite end of the arm has projectionj which rests in the notches in the rollernl. A spring j holds the projection j of arm J against the roller. Upon the shaft of this roller is connected the pivoted arm K,which forms or is connected with the armature. A spring keeps the arm K in its retracted position when the magnet is not energized, and-the stop 7c limits its movement in that direction. \Vhen the magnet E is-energized, the movements of the arm K and roller j do not move the arm J, the roller merely revolving; bntfwh'en. the magnet is disenergized and the arm by the action of the spring is moved toward stop 70 the movement of the roller lifts the arm out of the notch, causing it at its other end to contact with j, and thus close the circuit F.

In Fig. 3 the circuit F is completed through a notched roller L and two arms t Z, contacting, one arm, Z,'being always in contact with the roller L, the other, Z, being in such position asto be struck by the crown of the notches of wheel L, but to be withoutthe route of said notches. Z is a pawl connected with the armature Z of magnet E, said armature having the stops Z l to limit its movement, the spring Z to hold it and move it away from the magnet; and l is'a holding dog or pawl for the roller L. When the magnet is energized, the pawl 1 moves over the teeth of rolleryL; but when the arm is moved by the spring I the roller is moved so that the arms Tl contact with the roller, and the circuit F is completed.

In Fig. 4 the current F passes through the binding-post M and the plate m, which normally rests out of contact with binding-post M. The'plate m has the vertical slot m, in which the pin or stud 'm rests. In line with the lower end of the plate m is placed the stop m5] The lower end of plate m is beveled or inclined'to w ard magnet E. The armature m of the magnet E is pivotally provided with spring m and has in alinement with it the stop m When the magnet is energized, the armature inits movement lifts the plate m vertically through the pin-and-slot connection of the plate without causing the plate to contact with the binding-post M. \Vhen the armature m moves in the opposite direction, striking the straight face of the plate m causes it (the plate) to turnon the pin and contact with binding-post M, thus completing circuit F. x

In Fig. 5 the construction is substantially like that of Fig. 7, except the armature has connected with it a pawl O, which works in the notches 'n of a ratchet-wheel N. In the movement oft-he armature toward the magnetthe pawl slips over the notches; but in its movement in the other direction the pawl moves the wheel and to that extent retards the movement.

The construction shown in Fig. 6 is substantially like that shown in Fig. 1-as modified in Fig. 5, except instead of a notched roller an escapement I, having a notched hub or barrel 1], is used. 'In the movement of the armature-arm from the magnet this escapement acts to retard the movement of the arm.

In Fig. 7 the circuit F is connected with the armature Q of magnet E. q is a spring for returning the armatureQ when the magnet E is demagnetized. q" q are stops limiting the movement of the armature Q. Q, is a pivotedarm to which the circuit F is also connected. When these two arms Q and Q are electrically connected, the circuit is-complete. The face (1 is insulated, while face of the arm Q is active, so that when the magnet is energized and the arm Q passes over the face q the circuit is not completed; but when the magnet is deenergized and the spring q returns the arm Q in the other dimotion and contact is made between said arm and the face (1 the circuit is completed.

Having now fully described my invention,

what I claim, and desire to protect by Letters Patent, is-

vice when energized, and means to return said member to its initial position when said electric device is dene-rgized, and a device adapted to hold said second switch member out of electric connection with said first switch member in its movement under the action of the electric device. I

2. In combination, a main circuit, signaling devices on said circuit, a second circuit, receiving devices on said circuit, an electric device on said main circuit, a switch device consisting of two members, controlling said second circuit, the first member of which is moved in one direction, by said electric device when energized, and means to return said member to its initialposition when said electric device is denergized, and a device adapted to hold said second switch member out of electric connection with said first switch member in its movement under the action of the electric device, and means to retard the return movement of said first switch member when said electric device is denergized.

3. In combination,a main circuit, signaling devices on said circuit, a second circuit, receiving devices upon said circuit, an electromagnet upon said main circuit, said magnet having a pivoted armature, means to hold the armature of said magnet in its retracted position and move it toward that position when the main-line circuit is broken, the second circuit including the said armature, and a pivoted arm in alinement with the armature, the armature being free from said arm at its extreme position in either direction, the armature in its movement under the influence of the retractile device making electrical connection with said pivoted arm.

4. In combination, a main circuit, signaling devices on said circuit, a second circuit, receiving devices upon said circuit, an electromagnet upon said main'circuit, said magnet having a pivoted armature, means to hold the armature of said magnet in its retracted position and move 'it toward that position when the main-line circuitis broken, the secondvcircuit including the said armature and the pivoted arm in alinement with the armature, the armature being free from said arm at its extreme position in either direction, the armature in its movement under the influence of the retractile device making electrical connection with said pivoted arm, and a retarding device connected with the armature and acting during the movement of the armatn reunder the action of the retractile device.

5. In combination, a main circuit, signaling devices upon said circuit, an electric device on said main circuit, a second circuit, receiving devices on said circuit, an electromagnet of high resistance on said second circuit, the circuit through the magnet being normally closed, a shunt about said magnet, said shunt being normally open, a switch device, consisting of two members controlling said shunt, the first member of which is moved in one direction by said electric device on the .main circuit when saidelectric device is energized, and means to return said member to its initial position when said electric device is deenergized, and a device adapted to hold said second switch member out of electric connection with said first switch member in its movement under the action of the electric device, and a third circuit containing an indicating device,

a switch controlling said"circuit,- said switch being controlled by the electromagnet of high resistance, and adapted to be held open when said magnet is energized.

6. In combination, a main circuit, signaling devices upon said circuit, an electric device on said main circuit, a second circuit, receiving devices on said circuit, an electromagnet of high resistancein said second circuit, the circuit through the magnet being normally closed, a shunt about said magnet, said shunt being normally open, a switch device consisting of two members controlling said shunt, the first member of which is moved in one direction by said electric device on the main circuit when said electric device is energized, and means to return said member to its initial position when said electric device is denergized, and a device adapted to hold said second switch member out of electric connection with said first switch member in its movement under the action of the electric device, and means to retard the return movement of said first switch member when said electric device is deenergized, and a third circuit containing an indicating device, a switch controlling said circuit, said switch being controlled by the electromagnet of high resistance, and adapted to be held open when said magnet is energized.

7. In combination, a main circuit, signaling devices upon said circuit, an electric device on said main circuit, a second circuit, receiving devices on said circuit, an electromagnet of high resistance in said second circuit, the circuit through the'magnet being normally Ire closed, a shunt about said magnet, said shunt being normally open, a switch device controlling said shunt controlled by said electric device on the main circuit, and a third circuit containing an indicating device, a switch controlling said circuit, 'said switch being controlled by the electromagnet of-high resisttheelectricdeviceinonedirectien; and means In testimony of which invention I have independent of the electricdevice tdhmove it hereunto set my hand. 7

in the other direction, and means to oldthe second member of said switch out of alinen LEWIS ROWAND' 5 ment with the first-mentionedswitch mem- Witnesses:

ber, Whenmoving under the action of the FRANK SLBUSSER,

electric device. FRANCES ELLISL

Images