Model 5 Point Machines

MODEL 5 POINT MACHINES



















































INSTALLATION,
OPERATION AND MAINTENANCE
OF MODEL 5 POINT MACHINES


Model 5 A with series motor and pole-changer

Model 5E with split-field motor

Model 5P with permanent-magnet motor
































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CONTENTS


                                                    Page No

GENERAL DESCRIPTION
      The motor 6
      Friction clutch 7
      Gearing 7
      Operating and locking members 8
      Point detector 9

MODEL 5A MACHINE

      The motor 13
      Pole-changer 13
      Superimposed detection 17
      Typical wiring diagrams 18
      Control circuits 18

MODEL 5E MACHINE

      The motor 19
      Reversing switch movement 19
      Typical wiring diagrams 19

MODEL 5P MACHINE

      Polarised contactor 21

INSTALLATION

      Lock rods and detector rods 21
      Sleeper cutting 21
      Soleplates 23
      Wiring and connections 23

MAINTENANCE

      Lubrication 23
      Care of commutator 25
      Brush gear 26
      Friction clutch 26
      Lock rod. detector rods and connections 28
      Pole-changer 28
      Reversing switch movement 29
      Polarised contactor 30
      Point detector 32
      General instructions 33

GENERAL DESCRIPTION

The purpose of this handbook is to describe the operation and maintenance
of the Models 5A. 5E and 5P point machines.

The majority of the components are common to each type of machine,
and though the three types are similar in appearance each has a distinctive
motor and control circuit.

The model 5A machine is powered by a series-wound motor and is reversed
by means of an internal pole-changing...