USRE9946E - Electro-magnetic annunciator - Google Patents

Description

J. CAPRONx 3 Sheets-Sheet AAssignmr no J. D. LINCOLN.

ELECTRO MAGNETIC ANNUNGIATOR.

No. 9,946. ReissuedNo 29,1881.

= 3 Sheets-Sheet 2.

J. CAPRON,

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Reissued Nov. 29,1881.

UNITED STATES JACOB APROJ, (')F NEV YORK, N. Y., ASSIGNOR T() .TAMIIS ll. LlCOli,

PATENT OEFLCE.

F PLAINVILLE, MASSACHUSETTS.

ELECTRO-MAGNETIC ANNUNC'IATOR.

SPECIFICATION forming part of Reissued LettersPatent N o. 9,946, dated November 29, 1881.

Original No. 117,979, dated August l5, 1871. Application for reissue filed Fcaiaiary 11, 1851.

- of the United States, residing in the city,

county, and State ot' New York, have invented certain new and useful Improvements in Electric Signaling Aliparatus, ot' which the following is a specitication.

My invention relates to that class of electric signaling apparatus in which visual and audiblc signals, either or both, are made available to convey certain specific information to an attendant.

The invention relates more specifically to an organization of two or more signalingcircuits converging from dii-ferent points to a common si gnal-receivin g station, by which arrangement signals may be transmitted from a more or less distant point situated on any of the converging signaling circuits to an attendant placed at said receivingstation, whose attention may be secured by an alarm, while the particular circuit from which the signal proceeds may be indicated to him at the same time by a visual signaling dev-ice.

My invention consists in certain improved methods of operating said signaling mechanism, and of automatically connecting and disconnectingcertain portions of the electro-magnetic apparatus by the operation o t' the signaling mechanism itself.

It further consists in certain novel combinations ot the signaling circuits and mechanism, by means of which greater efciecy ot action is secured. v

As au example of the practical application of my invention, I have'hereinafter described my improvements in connection with an anntinciator such as is ordinarily employed in hotels and other buildings of similar character. In the accompanying drawings, Figure 1 is a rear elevation, showing the apparatus and Vmechanism at the central station, the box or case being in section. Fig. 2 is a plan view of the same. Fig. 3 is a side elevation, and Fig. 4 a front elevation, ofthe same. Figs. 5, 6, 7, 8, and 9 represent detached views of certain portions of the mechanism. Fig. 10 is a theoretical plan, showing the arrangement of the electric circuits.

The apparatus at the central station is iiiclosed in a box or case, l, upon the front ot Aplate, 1.

. cealed by pvoted shields `A A A A', which are mounted upon their pivots' so that they may be caused to fall or swing downward in the position shown by the dot-ted lines, as at A', for the purpose ot' exhibiting the characters upon the panel. This movement is effected b v mechanism which will be best understood by reference to Figs. l and 3.- i a represents a tumbler, which is aiixed to thek axis of the shieldAand turns with it. This tumbler is provided with a projecting tinger, a', (best seen in Fig. 5,) and when the tumbler Lis in its normal condition, as shown in Fig. 1,

with its shield vA in a position to conceal its number or character upon the panel l?, it rests against the projection c upon the long arm of a horizontal lever, C. (See Figs. 2, 3, and 7.)

-The short arm of the lever C has a sott-iron armature, m, attached to it, in aposition tobe capable ot' being acted upon by an electro-magnet, M, which is mounted upon a suitable bracket, B, secured to the front of the case I. Each of the four shields shown in Fig. 4 is provided with its own tumbler, dete, electro-magnet, and armature, and is capable of being operated independently of the others. Thus it will be understood that it an electric current be sentthrough oneot'- the electro-magnets M, it attracts its armature m,attached to the short end of the lever 0by which means the long arm ot' the same lever together with its dctent c is raised. .This movement deprives the tumbler a of ythe support against 'which itv normally rests in a position ot' unstable equilibrium, and it consequently tilts over, making, together with the shield A, nearly onehalf of a complete rcvolutionii'ipou its axis in its descent.

F is an independent electro-magnet, whichv is provided with vau armature, li, hung a resilient spring, f. Its armature carries. a hammer, f, which is arranged to strike against u gong, J, whenever the magnet` attracts itsJ armature. The gong J .serves as an. audible l nal-station is provided with a circuit closer or key, which I prefer to construct as shown yin Figs. 8 and 9.

D isa disk or plate intended to be fastened to a wall or other convenient support.

d is a knob or button attached to a pin which passes through an aperture in the disk D, as shown in Fig. 9. The reverse side ol' the disk I) is provided with a stud having an insulated screw, d', to which one. of the circuit-wires isr connected. The otherwirc is attached directly to the disk D in any suitable manner. I

The circuit is closed, when it is desired to transmit a signal, by pressing in the knob d,

in which case its pin will touch the `screw d and thus complete the circuit.

Thearrangement of the wires is as follows:

One ui'ain wire, O, is provided, to which is cou- `uected one wire of each pair leading from the viency, against a lmetallic pin, fu.

respective signaling-stations. The other wire of each pair leads tothe apparatus at the central station'. :Thus in Figs. 3 and 10 these four wires, constitutingthe foursignaling-lines from the four independent signaling-stations, are connected to binding-screws on the outside of. the case. as shown in Fig. 3,ffrom whence they pass to the signaling mechanism, as shown at 1, 2, 3', and 4in Figs.- 1 and 10. Each one of these wires is arranged in the same manner, and it will therefore bev suicient to describe the connections o'f one ofthem. For example,

' wire No'. 1 leads-directly to a spring, o, which normally presses, by virtue of its own resil- This pin is connected by wire 6, Fig. 3, to 'one end of the .coil of the electro-magnet M, the other end. of

the coil being connected to the return-wire O common to all the four magnets, and this return-wire is also electrically connected to the remaining wire leadingfrom each of the keys or circuit-closers at the four signaling-stations,

' as before stated.. It Vwill thus be understoodv that ordinarilythc circuitis complete from each of .ther signaling-stations through the correspondlng electro-magnet operating the visual signal at the central station, with the excep- .depresses it, as indicated by the dotted lines 4-in Fig. 1, and also in connection with wire 4 in t vtion of-ja break at the circuit-closer`of the sig- 6oV naliug-station. When, therefore, this break is closed upon any wire, the armature of the corresponding electro magnet' is .at ,once attracted and the' tumbler released, as herein- -before explained. In its desceutthe long n ger of the tumbler strikes -against the spring o and Fig. 10, thereby' interrupting the connection and-the vpiu 'v'. y By this means the circuit through the electro-magnet M is broken, while at the sameinstant a new circuit is formed through the tumbler tothe metallic bracket which supports the electro-magnet, from which a wire, 9, leads to the metallic socket E. A metallic pin, e, slides horizontally in. this socket, having at one end a disk, g, which moves between the upright springs G and G', and upon the other end a knob, e', ext-ending- `outside the case I. When the apparatus is in its normal position the circuit of the wire 9' passes through' the socket E and the rod e to the spring G, and thence by the wire 10 to the electro-magnet F, which operates the gong, thence by a wire, l1, which is permanently con- -which normally 'existedvbetween said spring uected with and forms a branch of the 'return f wire O. Thus it will be understood that when l the circuit is closed at any of the signalingstations the corresponding electro-magnet M is first actuated, causing the corresponding visual signal to be exhibited, and the mechanism which thus exhibits thevisual lsignal immediately afterward in terrupts the circuit through its own electro-magnet and forms a new circuit, which includes, in lieu thereof, the electromagnet of the audible signal.

It is sometimes desirable to have the gong sound a continuous alarm as long `as the'circ nit is closed at the signaling-station. eected by means of a spring, f', attached to the armature F ot' the electro-magnet of the,

gong which presses against an adjustable contact-screw, h, mounted upon a bracket, H. This arrangement forms au automatic'iuterrupter, which is thrown into circuit at the pleasure of the attendant by pushing in'-tlie knob e, in which case the connection of the wire 9 is shifted from spring G to the spring G. The spring G' is connected .bythe wire 12 with the contact-screw h, which touches the springf, the latter being connected with the electro-magnet F through theV frame" f", as hereinbefore explained. When the armature is attracted the current isinterrupted between the sprngf and the contact-screw h, but is automatically restoredl by the release of the armature, and this operation continues as llong as the current passes, causing thergong J tol be sounded continuously.

For convenience the sliding rod eisprovided with a deteut for holding it in position when pushed in, as shown 'in Fig. 2. The attendant replaces the tumblers and signaling devices in'their normal position by means of a slidingrack, R, Fig. 1, which is moved into-the position shown by the dotted lines by'a crank, r', operated by a handle, R', Fig. 3, on the outside of the case. Aspriug, disengages the rack fromthe tumblers when released by the This device is old, and is not hereoperator. in claimed.`

I claim as my invention- This is roo 1. The combination, substantially as hereinbefore set forth, of two or more main signaling-circuits converging to a `common signalreceiving station, each of said circuits being provided with, first, a branch circuit normally in electric connection with the main circuit; second, an electro-magnet included in said branch circuit; and, third, a circuit-changer ble signal, each actuated by an independent electro-magnet, two independent branch circuits, each iucludin g one of the respective electro-magnets, a circuit-changer automatically brought into action by the movement of the visual signal, whereby the actuating-current is ,diverted from the electro-magnet of the visual signal to the electromagnet of the audible signal, au' automatic circuit-breaker attached rto the armature of 4theelectro-magu et of said audible signal, and a switch whereby the current which actuates the audible signal may bemade to pass through said automatic circuit-breaker, or not, at the will of the attendant.

3. The combination, substantially as hereinbefore set forth, of two or more main signalin g-circuits converging to a commonA receivingstation, each of said circuits being provided with, first, a branch circuit normally' in "electric connection with the main circuit; second, a visual signal actuated by an electro-magnet included in said branch circuit; and, third, a circuit-changer actuated directly by the movement of said visual signal, which, when thus actuated, transfers the connection of said main circuit to a normally open return-circuit which is common to any and all the main circuits when thus transferred, and an audible signal operated by an electro-magnet included in said common return-circuit.

In witness whereof` 1 have hereunto set my hand this 27th day of January, A. D. 1881.

JACOB CAPRON.

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