US1734781A - Alarm-circuit system - Google Patents

Alarm-circuit system Download PDF

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Publication number
US1734781A
US1734781A US249355A US24935528A US1734781A US 1734781 A US1734781 A US 1734781A US 249355 A US249355 A US 249355A US 24935528 A US24935528 A US 24935528A US 1734781 A US1734781 A US 1734781A
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US
United States
Prior art keywords
alarm
contact
relay
station
earth
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Expired - Lifetime
Application number
US249355A
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English (en)
Inventor
Snyders Gysbertus Cornelis
Jr Cornelius Gordyn
Kamp Jan Van De
Maitland Charles Edwa Adrianus
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Individual
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Individual
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Publication date
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Publication of US1734781A publication Critical patent/US1734781A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Definitions

  • Gur invention relates toan alarm .circuit system, in whicht-he alarmcalls of alarming stationsl received in 'alarm receiving stations are sent on to other ⁇ alarm,receiving stations.
  • alarm-installations in which the alarm calls-received are to be 'collected in a central station and sent on from the latter' to fur-ther alarm receivingstati'ons (district stations), desirable that the said district-stations which" yarel allottedhto the singlegroups of alarm giving ,stations,- should be notiied as early asjpossible of any incoming alarm with-- in' their district.
  • Theobject or' the present invention isgto' accomplish such result in a simple andV reliable manner, this' being achievedby providing arrangements in the central station for giving a preliminary alarm in districtlstations, before the alarm calls are transmitted.
  • the selector 1R72 with the two switch arms lw21 and lw22, shown, is a lifting-rotary Yselector of the ⁇ Well known construction. Its corresponding advance magnets are the lifting magnet H and the rotary magnet D2.
  • the rotary magnetDl is the advance magnet for the ⁇ selector W1.
  • the alarm' may be sent; from; the i central alarm receiving station tothe ⁇ district receivingy station lllVVl or FVVZf-in the manner describedl in our British -r-Pat-ent Numbe'rp 270,755. rllhe asig- 'GitsBnR'rUs c onivnnis. sNYnEns, CORNELIUS Venannirn, Jn., aan 'VAN 'De' KAMP; Ann
  • nantns vJanv/"ARD ADRrANUs MAITLAND, or erfrsrnnnara, ⁇ Narrrrrananns Y nals. mayl also'fbe transmitted manually, ⁇ as l' for example by-means of a key ST 11 yin the central stationand a bell ST 12 located in the district receivingstation Fl/Vl as shown in the drawing ⁇ ln the alarm giving stat-ion yAGrS 431 are 4provid'edfdevices as described inV our British-Patent No. 269,941 and not shown in the drawing,by means'of which is obtained ythe characterizations of the alarm giving station-at the alarm receivingstation HBW. ,f i t 'lhefalarm giving station AGS 431 is connected by means of a connection line to the distributing station VS 1 in which by means oi' call seekers, asshownin theabovemen.
  • the No; 431' for instance by means of a number disc (not shown in the drawing), and this number is ⁇ indicated to the attendant in the alarm receiving station by the lighting of lamps.
  • the call seeker AS in the connection line a Z1 is set then to the-said alarm givingv station. Owing tothis setting, through the @conductor ofthe call seeker is closed the following test cir- .ze
  • v and b conductors'. of the connection line, choking' coils'Dr,”relay J, working contact 4p, battery,earth;'
  • the alarm receiving station HBV is Vnow prepared toV receiveA the first series of current impulses.
  • the alarm sender at the alarm giving station AGSt 431 dials now, for instance by means of his number disc, the digit 4.
  • the relay A at the distributing station' VS1? l follows the current -impulse thus produced,
  • the four current impulses of the first current impulse'series will be transmitted to the rotary magnet D1 of the selector Wlz-earth, rotary magnet Dl, rest contactv 8/01, current impulse contact 7i, battery, earth.
  • the selector will be thereby turned to the extent of four steps. With its switch arm w13, it prepares circuit for the relays V1,
  • the relay Vl createsl for itself a holding circuit independent of K1 z-earth, working contact 151:1, relay V1, rest contact 22flswitchf'arm w13 of the selector W1, battery, earth. ⁇ g
  • both stations F W1 and FW2 ' are necessarily Aconnected to Y the same alarm Contact 28h11
  • the relay R by closing its contact 307', produces the switching in of the preliminary alarm'hooter AH;
  • the contact 8011' is changed over owinfr tothe eX ⁇ cit-ation of the relay V1.
  • the relay V3 opens its contact 29413 and thus switches oit the preliminary alarm to the further alarm receiving ⁇ stations (FVVl, FW2). At the same time is closed the contactv 13113, and the lamp L HI switched in. Owing to the lighting of the lamp L III, theattendant at the alarm receiving station v. HBVV is notified that the alarm sending by thealarm giving station AGS 431 (number selection) is iinished.
  • the rotary magnet D2 of the selector W2 is cut out, and the relay K2 excited :-earth, relay K2, working contact 10113, working contact 9112, working Contact 8'111, current impulse contact 7i, battery, earth.
  • the relay K2 brings about the switching in 01"I the lamp L I:Vearth, working contact abandoned the alarm giving station AGS?? g 431 after giving ythe ⁇ alarm (that is, after completing the number selection); ⁇
  • the attendant at the alarm receiving station ⁇ HBVVl switches then ⁇ his enquiryv apparatus'AbA'into the connection.line-,cfl Z1.
  • the relay L closes its contacts 231,'24Z and 255 and switches inthe lamps H4, Z3,'E1, in the lamp lield, ivhich correspond to the calling alarm giving station'AGSt'431.
  • the attendant at the alarm lreceiving station HB1/V sends them in any dei Sired manner, 4for instance bynumberi selection, which is described in our BritlshPatent No.l 270,755, the number received-in our eXample'431-to the next 'alarm receiving station, for instance FWl or 'FVW'. l
  • the attendant Afterthe alarm hasbeen sent onto the next alarm'receivingstation e(FVVl, FW2), the attendant :depresses the lreyfAT. 'In that way the relay l? isenergizedif-earth, relay l?, switchA arm ⁇ 'w12' of the Vselector VW1, re- 11 lleaselreyA'T, battery, earth'.
  • the relay F isconnected to the thfcontact of the contact .bankof thev selector W1.
  • VThe .relay 'F closes for.itself, by -means ofitsy contact 267i, a
  • An alarm circuit system comprising alarm transmittingstations divided into districts, a central. alarm receiving station, dis- -trict'y alarmzreceiving stations, means at each alarm transmitting station for transmitting to the central-station a code of impulses consistingof a plurality of; parts characteristic .ofthe particular alarm transmitting station and district in'which said station is located,
  • An alarmV circuit system comprising alarm transmitting stations divided in-todistricts, a centralalarm receiving station, district alarm receiving stations, means at each alarm transmitting station for transmitting .to the central station ay code of impulses conv sisting of a plurality of parts characteristic of the particular alarm transmitting station and district inwhich said station is located', a part of said code. impulses 'characterizing Vthe district in Whichpthe alarm transmitting station is located, the otherparts ofsaid code nnpulses following in sequence the said first mentioned part of the code impulses and com.-

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
US249355A 1926-07-03 1928-01-25 Alarm-circuit system Expired - Lifetime US1734781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE273710X 1926-07-03

Publications (1)

Publication Number Publication Date
US1734781A true US1734781A (en) 1929-11-05

Family

ID=6016627

Family Applications (1)

Application Number Title Priority Date Filing Date
US249355A Expired - Lifetime US1734781A (en) 1926-07-03 1928-01-25 Alarm-circuit system

Country Status (5)

Country Link
US (1) US1734781A (xx)
BE (1) BE343820A (xx)
FR (1) FR636949A (xx)
GB (1) GB273710A (xx)
NL (1) NL29660C (xx)

Also Published As

Publication number Publication date
NL29660C (xx)
FR636949A (fr) 1928-04-19
GB273710A (en) 1928-08-23
BE343820A (xx)

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