US447061A - Municipal signal apparatus - Google Patents

Description

(No Model.)

B. J. NOYES. MUNICIPAL SIGNAL APPARATUS.

No. 447,061. Patented Feb. 24,1891.

LIIIIIIMIIHUQ UNITE STATES PATENT OFFICE.

BERNIOE J. NOYES, OF BOSTON, MASSACHUSETTS.

MUNICIPAL SIGNAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 447,061, dated February 24, 1891.

' Application filed Septemherl4, 1888. Serial No. 285,355. (NomodeL) To aZZ whom it may concern.

Be it known that I, BERNICE J. NoYEs, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Municipal Signal Apparatus, of which the followin g description, in connection with the accompanying drawing, is a specification, like .letters on the drawing representing like parts.

In another application filed by me concurrently with this, Serial No. 285,354, amunicipal telegraph system is shown adapted for police-signal purposes, wherein several substations and a central station are connected by an electric circuit. In said application the different signals were transmitted over a metallic circuit, and an instrument capable of producing or transmitting impulses or currents of a different character was included in another circuit, preferably formed by ground taps or branches between the metallic circuit. The instrument therein shown was What is commonly known as a magnetoelectric generator.

In this my present invention the signals are transmitted over a metallic circuit, and induced impulses are employed to operate or call into operation the audible alarm or indicating signal. The induced impulses are produced by induction-coils, which are included in local-battery circuits including a circuitchanging device, also the secondary coils are included in the main circuit. A polarized receiving-instrument is located at the central station, which is responsive to the said induced impulses. The code-signal transmitter in the box at the sub-station may be any usual or suitable form of multiple signal transmitter, the form herein shown being substantially that contained in United States Patent No. 320,032, dated June 16, 1885, it comprising several signal-wheels on a shaft, a series of pens, one for each signal-wheel, and a selecting-cylinder constructed and arranged to press one or another pen into engagement with the signal-wheels, a pointer for rotating the selecting-cylinder, and a dial for the boxes over which the pointer moves. Telephones are provided arranged in ground-taps of the main circuit, which will be employed in usual manner.

The drawing shows in diagram a multiplesignal transmitter, induction-coil, and telephonicinstruments,and the circnitsat the substation, and also the signal-receiving instrum ent, polarized instru ment,and audible alarm or indicating signahand the telephonicinstruments and circuits at the central oflice or main station. At the sub-stations multiple-signal transmitters are employed of any well-known form orconstruction,themultiple-signaltransmit-ter herein shown b eing'ot' the kind shown in patent referred to, it comprising a series of signal-wheels (L a a a a series of pens b b 1) b and a selecting cylinder and pointer. (Not shown.) The multiple-signal transmitter is included in a main electric circuit A, which includes the main batteryA', and at themain or central station a receiving-relay c is employed, the armature of which controls a local circuit 0 containing a battery 0 an a register R. The signal-wheels a a a a are so formed as to effect the transmission of different signals in conjunction with the box number, and the rcceiver'R is designed to receive all the signals transmitted.

In'United States Patent No. 359,687, dated 'March 22, 1887, heretofore granted to me, a

municipal telegraph system is shown comprising a main or central station and several sub-stations connected by an electric circuit, the sub-stations containing signal-transmitters, and the main station containing a'signal-receiver, and also an audible alarm or indicating signal, which is responsive to some of the signals transmitted, but not others.

In accordance with this invention an audible alarm or indicating signal is provided at the main or central station, which is responsive to some of the signals transmitted, and to eii'ect this result an induction-coil B is placed at the sub-station, the primary coil 19 of which is included in a local circuit 19' containing the battery 19 and the circuit-wheel a and pen while the secondary coil 5 is included in the main electric circuit.

For simplicity of operation I have placed the circuit-wheel a upon the same shaft with the wheels to a, &c., but insulated therefrom, and I have secured the pen Z7 to the same block to which the pens b b, &c., are attached, and the contact portions of the circuit-wheel are arranged with relation with the contact portions of the other wheels, so as not to interfere in operation, but to operate in conjunction with some of the wheels, so thatinduced impulses may be transmitted in advance of or immediately after the signals with which it is to (to-operate. At the central station a polarized receh ing-instrument is employed which is included in the main electric circuitand responsive to induced impulses.

As herein shown, the polarized instrument is a relay, as R, the armature of which controls the electro-magnet m included in aloealbattery circuit m, and the armature of said electro-magnet 'min turn controls the drop m in a local-battery circuit m", which ineludes a bell.

It. is obvious that the armature of the relay R may be provided with a bell-hammer and directly tap the bell.

l have shown the circuit-changer I) as formed with four contact portions to transmit four induced impulses, yet any other number of contact portions may be provided.

At the main and sub stations ground taps or branches a lead from the main circuit in which the telephonic instruments 2- are included in any usual or suitable manner.-

I claim 1. In a municipal telegraph system, a main station and several sub-stations connected by an electric circuit, multiple-signal transmitters at the sub-stations, and signal-receivers at the main station, combined with an inductorium one of the coils of which is included in the main signaling-cir uit and the other coil in a battery-circuit, a circuit-changer for said battery-circuit, which operates auto matically in conjunction with some signals and not others, and a polarized receiving-instrument at the main or central station responsive to the induced impulses, substantially as described.

2. In a municipal telegraph systcm,a main station and several sub-stations connected by an electric circuit, a m ultiple-si'gn al transmitter at the sub-stations comprising a series of signal-wheels and a series of pens, and a signal-recei vi ng apparatus at the main station responsive to the changes in the condition of the main circuit produced by said multiplesignal transmitter, combined with an inductorium one of the coils of which is included in a main circuit and the other in a local-battery circuit, a circuit-wheel a fixed to and insulated from the rest of the shaft carrying the signal-wheels, the pen 61 and the polarized receiving-instrument at the main station responsive to the induced impulses, substantially as described.

In a municipal telegraph systenna main station and several sub-stations connected by an electric circuit, a multiple-signal transmitter at the sub-station, and a signal-receiving apparatus at the main station responsive to the changes in the condition of the circuit produced by said multiple-signal transmitter, combined with an inductorium at each substation, one of the coils of which is included in said circuit and the other coil in an independent battery-eircuit, a circuit-changer for making and breaking said independent battery-circuit which is operated automatically in conjunction with some signals but not others, and a polarized signal-receiving appa ratus at the main station responsive to the induced impulses, substantially as described.

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

BERNIOE J. NOYES.

Witnesses:

GEO. W. GREGORY, IlowARi) F. EATON.

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