USRE13248E - Edwin b - Google Patents

Description

E. R. GILL.

SELF ANSWERING SIGNAL SYSTEM. V APPLIOATION FILED 1120.13, 19 0; v

Reissued May 30, 1911. 1 3,248;

Fig. 2;,

Invests- 85 I I f" Arm/wits? UNITED STATES PATENT OFFICE.

EDWIN n. GILL, or YoNxEBs, NEW YORK, AssIoNoE BY MESNE ASSIGNMENTS, ro nownnn E. unnnnnn, or NEW YORK, N. 1., am) one .1. HAMLIN, or sun'rrrron'r,

PENNSYLVANIA.

SELF-ANSWERING SIGNAL SYSTEM.

Specification of Reissued Letters Patent. Reissue ad May '30, 1911.

Original No. 984,908, dated September 21,1909, Serial No. 472,112}.- Apph'cauon for'reissue filed December 1a, 1910. 'Serial mpsemea;

To all whom it may concern:

Be it known that I, EDWIN R. GILL, re-

siding at Yonkers, in the county of West chester and State of New York, have in vented certain new and useful Improvements in Self-Answering Signal Systems, of which the following is a s ecificatlon.

. This invention re ates broadly to signaling systems and in a more specific relation to SuchsySteIns-as-are adapted to telephonic and train desp'atching. work. 7

One of the prime objects of the invention is to provide means whereby upon the closing of a circuit to a local signal at'a station distant from the sending station the operator at the sending station may be instantly apprised of the successful operation of the circuit closer; y

Another object of the invention is to so arrange selective apparatus, a local signal and a line that upon the closing of the circuit through the local signal, answer back impulses will be inductively impressed upon the line, which impulses will audibly affect the receiver inthe sending station.

I have shown my improvement in three I illustrative modifications in the accompanying drawings-each of the three figures of which is a diagram showing one form of the invention.

' In Figure 1 themain line over-which the.

signals are operated is indicated at 10, and at 11 is indicated the base of any desired form of selective circuit closer operated by an electromagnet shown in diagram at 12. My'inventioh is not concerned with the details-in this selective device, many forms of which are well known, and while the form shown inmy Patent No. 906,523, dated December 15, 1908, is suitable for this pur ose,

-I am not limited to use of this type 0 device. In Fig. 1 the circuit closer or switch whereby the local signal circuit is established is indicated in diagram at 13. This is operated by m'eans'controlled by the magnet 12. a

The si al in the form shown is an ordinary bel 14, in series with a local battery 15, with the switch 13, and with a coil 16, on the magnet 12. The local circuit coil on the magnet is distinguished from the operating circuit 17 connected with the main line by.

the use of heavy lines toindicate the former and light lines for the latter.

It'will-be understood thatfwords descriptive ofthe circuit for a local signal employed i'n'this'specificat-ion or in the accompanying claims are used in a broad sense, and may include a complete circuit from battery to battery or only such portion of a circuit as may include the coils of one or more of the variousdevicesforming a portion ofjthe 5 system disclosed herein.

In some" cases it may be found advanta geous to place a reaction or'choke coil 18, one or both sides of the local operating switch circuit, for the"purpose' of. arresting rapidly undulating or oscillating currents such as those on telephone circuits and those due to lightning.

upon the inductive effect of the'undulatory or interrupted current set up in the, local signal 'circuitby direct action of the interrupter forming'part of the signal as well as by the kick back' of its magnet. This current, passing through the coils 16 which act as a primary, while the magnet itself acts as a converter core, set up by induction a corresponding alternatlng current in the the buzzing will be heard at 19, whereby the operator knows that he has beensuccesSfuI.

In Fig. 2 is shown, an arrangement for use where a number of signals are arranged in series on a single wire 20. In this case the non-inductive resistance 21 may or may not be used in shunt with the magnet circuit 17.

In Fig. 3 is shown a single magnet 22, adapted, when energized, to draw to it the armature 23 to close the signal circuit at13.

The same principle of answering back by induction from the coil 16 on the operating magnet: is embodied here as in the forms shown.

' As many changes could be made in the above construction and many apparently main line, which can be distinctly perceived 1 The operat i 'n of the answer back depends widely difierent embodiments of this inven v tion could bemade without departin from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having thus describedmy-invent-ion, what I claim as new and desire to'secure by Letters Patent, is

1. A self answering signal system comprising a main line, an electromagnet having coils connected to said main line, an electrpma netic signal device, an electric circuit for sai signaldevice lncludmg one ormore coils on saidfirst named electromagnet, and

a circuit changer for said last named circuit,- arranged to be operated'by energizing said magnet, substantially as described.

2. A. self-answering signal system comp'risin amain line, a selective signal operator aving-an operating electromagnet whose coils are connected to said main line, an'electromagnetic signal device, an electric circuit for said signal device including one or-more coils on saidelectromagnet, and a.

circuit changer for said last 'named circuit, arranged to be ,0 erated, by said selective signal operator, su stantiallyas' described.

3. A signaling system,comp rising in combination, 'a main line, selective apparatus 1 having coils connected to the main line, an

electromagnetic si means operated y said -si adapted to transmit electric mpulses to the a main line through the connectionsq f j-tlre selective apparatus therewith.

4'. A signaling system, compr sing incomaling device, a 'circuit" for said signaling evice adapted to be closed by said? selective a paratus, and answerback' aling device 7 bination, a line, selecting means inbridge of sa d l1ne, alocal signal, a circuit for saidlocal signal adapted to be directly closed by said selecting means, and means associ- .ated with said local signal adapted during the operation thereof to impress impulses of varying potential upon the line to produce an answer backsignal, said impulsesbein transmitted to the line through the bridge'o said selector, and answer back receiving means.

5. In a system of the class described, in

combination, a' main line, a local signal, a

circuit for the local signal, a selector connected in bridge of the main line. adapted when operated to close the circuit for the local signal, an answer back means associated with'said local signal and'saidselector for'impressing impulses upon the main line through the bridge of said selector, and anvariable answer, back current fiow upon the main line throu h the bridge of said selector, and answer bacr receivlng means connected in the main line.

In testimony whereof I afiix my signatur in the presence oftwo witnesses? I v EDWIN R. GILL. Witnesses:

- A; S. Homo-sense,

M. A. Bosonmz.

Copies of this patent may be obtalnedtorfive cents each, by addressingthe Commissioner of -I'atents,

Washington, D. G.

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