TRAFFIC CONTROL TELEPHONE SYSTEMS Circuit - Sam Hallas

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Page 84 PART 11 ADJUSTING TOOLS
Registered Office: CONNAUGHT HOUSE 63 ALDWYCH, LONDON, W.C.2. Telephone: Holborn 8765 Telegrams: Relay, London Works: NORTH WOOLWICH, E.16 Telephone: Albert Dock 1401 NEWPORT, MON. Telephone: Newport (Mon.) 72281 NEW SOUTHGATE, N.11 Telephone: Enterprise 1234 FOOTSCRAY, KENT Telephone: Footscray 3333 HARLOW, ESSEX Telephone: Harlow 26811 (Rectifier Division) Harlow 24212 (Quartz Crystals) PAIGNTON, DEVON Telephone: Paignton 58685 ILMINSTER, SOMERSET Telephone: Ilminster 237 Home Branch Offices: BIRMINGHAM LEEDS BRISTOL GLASGOW MANCHESTER SOUTHAMPTON, HANTS Telephone: Southampton 74751 TREFOREST, GLAMORGAN Telephone: Treforest 2182 Overseas Branch Offices: DUBLIN KARACHI JOHANNESBURG NEW DELHI SALISBURY Resident Representatives at:— ACCRA, COLOMBO, ISTANBUL and NAIROBI Associated Companies in Europe, the U.S.A., Canada, South America, the Far East and Australasia. EUROPE CYPRUS GREECE MALTA AFRICA Union of South Africa CAPE PROVINCE (West) NATAL Federation of the Rhodesias and Nyasaland NORTHERN RHODESIA (Copper Belt) SOUTHERN RHODESIA (Bulawayo District) British West Africa GAMBIA SIERRA LEONE British East Africa KENYA TANGANYIKA UGANDA ZANZIBAR Ghana ACCRA Sudan SUDAN Agents in: INDIA ANDHRA ASSAM BIHAR BOMBAY & SAURASHTRA EAST PUNJAB HIMACHAL PRADESH & UTTAR PRADESH HYDERABAD MADRAS MYSORE ORISSA PATIALA STATES TRAVANCORE-COCHIN WEST BENGAL (including Calcutta) PAKISTAN EAST PAKISTAN CEYLON CEYLON FAR EAST BRITISH NORTH BORNEO BRUNEI BURMA HONG KONG INDONESIA MALAYA (Federation of) SARAWAK SINGAPORE (Colony of) THAILAND MIDDLE EAST BAHREIN IRAN IRAQ JORDAN KUWAIT LEBANON SAUDI-ARABIA SYRIA SOUTH AMERICA BRITISH GUIANA Page 85
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TRAFFIC CONTROL TELEPHONE SYSTEMS C
Page 4 and 5:
CONTENTS Part Title Page 1 Key Syst
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swing of the meter needle either si
Page 8 and 9:
One No. 4002-B Selector Key Case (c
Page 11 and 12:
wires. This change of polarity is t
Page 13 and 14:
Case), K2 terminal (Time Sending Se
Page 15 and 16:
Where satisfactory operation cannot
Page 17 and 18:
one is available (if not, with an o
Page 19 and 20:
PART 2 4001-A SELECTOR KEY Selector
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The keys are easily removed from th
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Letter. Name. S.T.C. Code. A Impuls
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4. When the key is normal the tip o
Page 27 and 28:
the time terminal. During selective
Page 29 and 30:
Cycle of Events on Receiving a Code
Page 31 and 32:
Mechanical Requirements To assist i
Page 33 and 34:
(b) The contact spring (Z) in the n
Page 35 and 36: Letter Name 4301-A 4304-A 4305-B A
Page 37 and 38: General PART 4 4001-B SELECTOR TEST
Page 39 and 40: 4001-B Selector Test Set, Schematic
Page 41 and 42: General PART 5 DIAL SYSTEM, SELECTI
Page 43 and 44: The speak key also connects the con
Page 45 and 46: normal, Relay IR is held operated a
Page 47 and 48: here that from SC bank contacts 29
Page 49 and 50: from Line switch SC banks 1 and 2 a
Page 51 and 52: Line Test Set . . . . . . Designed
Page 53 and 54: Line Voltage Curves Fig. 14. The op
Page 55 and 56: General PART 7 LINE TEST SET-LU.310
Page 57 and 58: Operating Instructions 1. Voltage M
Page 59 and 60: the particular line to the earthed
Page 61 and 62: Operate CVK, note meter reading on
Page 63 and 64: 10. Impulse Ratio Check on Selectiv
Page 65 and 66: 12. Telephone Communication. (See F
Page 67 and 68: Page 65
Page 69 and 70: Armature Travel Armature travel is
Page 71 and 72: Contact Sequence The standard conta
Page 73 and 74: chloride or trichlorethylene. The t
Page 75 and 76: PART 9 ADJUSTMENT AND MAINTENANCE D
Page 77 and 78: 9. Armature Restoring Springs:— T
Page 79 and 80: Oil dag should be applied as above
Page 81 and 82: 3. Pawl Spring Tension 3.1 With the
Page 83 and 84: 8.6 The wipers shall exert a pressu
Page 85: 2.2 The wipers shall rotate smoothl
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TRAFFIC CONTROL TELEPHONE SYSTEMS Circuit - Sam Hallas

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