US1829803A - Telephone system - Google Patents
Telephone system Download PDFInfo
- Publication number
- US1829803A US1829803A US472945A US47294530A US1829803A US 1829803 A US1829803 A US 1829803A US 472945 A US472945 A US 472945A US 47294530 A US47294530 A US 47294530A US 1829803 A US1829803 A US 1829803A
- Authority
- US
- United States
- Prior art keywords
- relay
- line
- trunk
- repeater
- telephone system
- 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 - Lifetime
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
Definitions
- Relay Gin operatingcauses the ontacts 13 of trunk Relays 15 and 11in'operating remove the i normal v short-circuit across the input "ter- "mi'nals' ation' of relays 15 'an'd" 11ialso. place the 're- 2' peater in operative relation with the line by closing contacts and 31,2
- Ground on conductor 41 also serves to hold operated all preceding selector or trunk switches as,; for example, trunk fpul ses but relay 2 1 Whichis e,ho 'l'ds up during pulsing and.
- Relay 36 in operating also connected Y relays l5 andQ11. Relay 6'fol,-
- a line divided V intortwo sections an automaticswitch termin-ating at one end of said line, impulse j 1 transmitting means for controlling said switch associated with the other end of the line, a repeating device substantially opaque to said impulsesconnectingsaid line sections and means efiective during the transmission of impulses for maintaining a connecting path between said line sections independent 7 of said repeater. 5
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Description
7 Nov 3, 1931.
F. A. KORN ET AL TELEPHONE SYSTEM Filed Aug. 4. 1930 //v VEN mks i Patented Nevis; .1931 i @125 r liaround astandardq2:way telephonerepeater.
MT-p135 t p s V [Minna AQ 301m, ornLifzAnEmm-nrrw :YORK, n Y1; Assrcmons T BELL, TE
" .7 f or NEW ironing 3a,. A: com-cannon or JnRsEY, Am FERDINAND s. Emz; on NEW? nnrrrom: masom'romns, mconromrnn;
linwr onk- 1 Hu or? sxsm A' iu catfinmeahugm 4,1930. Serial 110. 472,945..
I inventionrelates"tojtelephone sys- "tan-1s,- and more pa'r'jticularly to =1ines,',ar-
irarigedfor controlling automatic switches I Infeansof'current v i E51 ers or amplifiersarei lS QIted for theurpose of improving thejti'ans nission of speech he iqu n y n I q i e invention is to protect the An object of;
' repeaters from the" switching i'mpuls'es and l'PlQI'B p rticularly to prevent the V repeater 3 from interfering with or I afi'ectingthe'switch- Alfeature' off the invention the provision and called ends of the flinegforf disabling and I effectively discongi citing; the repeater during ".pl gv Another feature relates-to an arrangement eiline, j f The invention b willibe understood from the llowing description whenread in connec- 1 n rolling the energization of therepeat 'zer'ffrom the calledjen'd of th showsf, between: the vertical." broken lines A.A and B-B, a dial pulse byjpassj circuits The apparatus indicated bctw enfthe vertifoal vbroken line's-'AT A and D-jDj represent a ,i :{macliiiie switchingor dial ofiice, thatj'to 'the 9 left of line :D,.'D represents afdial subscrib- 'rers line ektended' to an outward; operators V J position and that totharightfloffthe} line .VYB B, apparatusrat a secondldial officeffor extending the line to a ,i'distant "ope'rat0r,s
: pQ SitiQnS. V l i p ,When the line of the calling subscriber S r isiextended ove'rthe selector switchlto the. ,contacts or the trunk 2, ground on the third" through to rpeater trunk, 5. Whenthis re"- peater trunk is seized a bridge is connected across the tipjandj ring conductors; which causes the line relay 6 in the byjpass circuit 4 to; operate in series rwithYtheline'u 'relay Tat the distant dial office; This i'circuit' 'niay be up traced from batteryf ett-hand windt'gjcf 1 relay J; ring co du r O t unk 8 "bnf f: tor 9, contacts lfOIof relay 11, upper-winding of relay- 6; contactsi'lof relay lfiycond'uctor 'inipuls'es, repeattoatlie tip of the line,'c
V 1 10,111 withjthe accompanying drawing which h 36f the switch lrc auses the trunk'switch- *itto plungeand connect the calling subscriber 16 ring conductor oftrunk 5, contacts .12. of
trunk r fi iiitcli twing conductor. oniun'k 2,
andthence thru'the subscribers equipment switch 4, conductor 17',"c0ntacts 18 of relay lower winding of relay 6, contacts19of relay l1, conductor 20, and tip oftrunk' 8 "to 'groundth'r'ough theright-hand winding of relay 7'. operation of relays 15 2mm 11in an obvious circuit overcontacts of; relay 21. i
., Relay Gin operatingcauses the ontacts 13 of trunk Relays 15 and 11in'operating remove the i normal v short-circuit across the input "ter- "mi'nals' ation' of relays 15 'an'd" 11ialso. place the 're- 2' peater in operative relation with the line by closing contacts and 31,2
openfcontacts, 14,18, and '19, thereby "transferring thepreviou'sly I [circuit through thewindingsi 32 and 33. of transformer Tginipedan ce @1140 ingsj3 and 35 of transformer T Y The? repeater. islnow' in" peat voi qe' frequency current.
f" the repeater, this being 'accorn plishedby opening contacts '22'and23 of're ndw ln,
condition toi-r'ei v Furthen'the operation of relays15and'11 traced by-pass t' fl whefnfrelayfi operated in series with relay 6 it caused the operation ofv relay 42 which;-
connected ground to conductor 41 thereby 'causing the operation of sleeve" relay 36; 1' Thisrelay," in operating, prepares a circuit i 'to operate relay 2lwhen relay 6 releaseson the first'open circuitimpulse fromthe subscrib'ers dial. ,7 Ground on conductor 41 also serves to hold operated all preceding selector or trunk switches as,; for example, trunk fpul ses but relay 2 1 Whichis e,ho 'l'ds up during pulsing and.
means responsive tothe seizure of said line for, activating said repeater and connecting it in said line andresponsive to the actuation r of said imp ulse transmitter to disable and again disconnect said repeater during the actuation of said impulse transmitter. v
10. In a switching'system, a line divided V intortwo sections, an automaticswitch termin-ating at one end of said line, impulse j 1 transmitting means for controlling said switch associated with the other end of the line, a repeating device substantially opaque to said impulsesconnectingsaid line sections and means efiective during the transmission of impulses for maintaining a connecting path between said line sections independent 7 of said repeater. 5
V In witness whereof, we hereunto subscribe .our names this 1st day of. August, 1930.
' i- FRANHJIN A. KORN'. QFERDINAND S. ENTZ.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US472945A US1829803A (en) | 1930-08-04 | 1930-08-04 | Telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US472945A US1829803A (en) | 1930-08-04 | 1930-08-04 | Telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
US1829803A true US1829803A (en) | 1931-11-03 |
Family
ID=23877531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US472945A Expired - Lifetime US1829803A (en) | 1930-08-04 | 1930-08-04 | Telephone system |
Country Status (1)
Country | Link |
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US (1) | US1829803A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2475546A (en) * | 1944-02-19 | 1949-07-05 | Automatic Elect Lab | Impulse correcting repeater |
US2491263A (en) * | 1946-11-01 | 1949-12-13 | Automatic Elect Lab | Ringing system for voice current repeaters |
US2552787A (en) * | 1946-11-23 | 1951-05-15 | Automatic Elect Lab | Channel switching in voice current repeater stations |
US2554828A (en) * | 1947-07-07 | 1951-05-29 | Bell Telephone Labor Inc | Testing repeaters in transmission systems by shunting out individual repeaters |
US2564084A (en) * | 1946-11-02 | 1951-08-14 | Automatic Elect Lab | Telephone system having repeater insertion on long distance lines |
US2579530A (en) * | 1947-04-29 | 1951-12-25 | Int Standard Electric Corp | Four-wire to two-wire connecting circuit |
US2601302A (en) * | 1941-05-02 | 1952-06-24 | Int Standard Electric Corp | Two-way wire telephone repeater circuit |
-
1930
- 1930-08-04 US US472945A patent/US1829803A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2601302A (en) * | 1941-05-02 | 1952-06-24 | Int Standard Electric Corp | Two-way wire telephone repeater circuit |
US2475546A (en) * | 1944-02-19 | 1949-07-05 | Automatic Elect Lab | Impulse correcting repeater |
US2491263A (en) * | 1946-11-01 | 1949-12-13 | Automatic Elect Lab | Ringing system for voice current repeaters |
US2564084A (en) * | 1946-11-02 | 1951-08-14 | Automatic Elect Lab | Telephone system having repeater insertion on long distance lines |
US2552787A (en) * | 1946-11-23 | 1951-05-15 | Automatic Elect Lab | Channel switching in voice current repeater stations |
US2579530A (en) * | 1947-04-29 | 1951-12-25 | Int Standard Electric Corp | Four-wire to two-wire connecting circuit |
US2554828A (en) * | 1947-07-07 | 1951-05-29 | Bell Telephone Labor Inc | Testing repeaters in transmission systems by shunting out individual repeaters |
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