GB190925196A - Improvements in Signalling Systems. - Google Patents

Improvements in Signalling Systems.

Info

Publication number
GB190925196A
GB190925196A GB190925196DA GB190925196A GB 190925196 A GB190925196 A GB 190925196A GB 190925196D A GB190925196D A GB 190925196DA GB 190925196 A GB190925196 A GB 190925196A
Authority
GB
United Kingdom
Prior art keywords
line
circuit
magnet
bell circuit
signalling systems
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Edwin Ruthven Gill
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190925196A publication Critical patent/GB190925196A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/18—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre
    • H04Q5/22—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre the subordinate centre not permitting interconnection of subscribers connected thereto

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Alarm Systems (AREA)
  • Selective Calling Equipment (AREA)

Abstract

25,196. Gill, E. R. Jan. 13, [Convention date]. Indicating ringing of bells to operators. - The operation of a circuit-closer 13 in a bell circuit at a distant station is indicated in a telephone 19 at the transmitting station through impulses transmitted in the line 10 from the induction coil 16, one winding of which is connected to the line, and the other in the bell circuit. The core of the coil also forms the operating-magnet for the bell circuit. The magnet may be connected in shunt with a resistance on a single line.
GB190925196D 1909-01-13 1909-11-02 Improvements in Signalling Systems. Expired GB190925196A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US190925196XA 1909-01-13 1909-01-13

Publications (1)

Publication Number Publication Date
GB190925196A true GB190925196A (en) 1910-05-19

Family

ID=32596453

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190925196D Expired GB190925196A (en) 1909-01-13 1909-11-02 Improvements in Signalling Systems.

Country Status (1)

Country Link
GB (1) GB190925196A (en)

Similar Documents

Publication Publication Date Title
GB190925196A (en) Improvements in Signalling Systems.
US1547873A (en) Signaling system
US2283646A (en) Telephone apparatus and circuit therefor
US2492125A (en) Buzzer in telephone receiver for signaling
US978695A (en) Signaling apparatus.
US1458988A (en) Means for equalizing transmission over lines of different electrical characteristics
US2250769A (en) Signaling circuit
US2949507A (en) Electrical information system
US964169A (en) Current-interrupting device.
US978909A (en) Composite telephone and telegraph system.
US976961A (en) Combined telephone and service system.
US756296A (en) Selective signaling for polystation telephone-circuits.
USRE13795E (en) Signaling system
US287356A (en) Geobge lee andeks
US702669A (en) Sound-strenghthening appliance for telephone-stations.
US719999A (en) Signaling apparatus and system.
US550982A (en) Harmonic selective signal for party telephone-lines
US719998A (en) Telephone system.
US239579A (en) Telephone signaling apparatus
US1179175A (en) Telephone system.
US202495A (en) Improvement in telephone call-signal apparatus
US492482A (en) Signaling apparatus and circuit
US831525A (en) Composite telephony and telegraphy.
US637884A (en) Telephone-circuit.
US1355863A (en) Telegraph installation