Electric Point and Lock Machine

Compact point machines designed for the electrical operation and locking of facing or trailing points on narrow gauge railways with rail weights up to 78lb/yard.

110V AC versions now available

Features Electrical operation of facing or trailing points Point locking facility Left or right handed options Facility for hand cranking Minimal maintenance required 24V DC operation.

Features:

  • Electrical operation of facing or trailing points
  • Low profile
  • Point locking facility
  • Left or right handed options
  • Facility for hand cranking
  • Minimal maintenance
  • 24V DC or 110V AC operation

Operation

The points throw is achieved by means of a sliding cam, with an Acme screw converting rotary to linear motion. A 24 Volt DC motor turns the screw via reduction gears. Over-current sensing isolates the motor if a foreign object jams the points. The screw assembly is fitted with limit switches and there is separate electrical detection of the locks.


Locking

Normal and reverse lock dogs integral with the linear cam plate provide the locking. Two versions are available:

  • Direct locking of the throw bar for smaller track gauges e.g. 15-inch and 24-inch gauges
  • Separate throw and lock rods for larger gauges.


General layout

A heavy steel bedplate carries a fabricated steel box chassis that encloses the entire mechanism. This is provided with a stainless steel weather tight cover. Five pairs of fixing holes allow the machine to be bolted to sleepers of wildly varying spacing. The throw bar is double-ended, allowing the machine to be used on right or left handed points. A second drive may be attached to work a back drive, or trap points. There is a facility to allow the machine to be manually driven using a crank handle. Power to the motor is cut when the crank handle is inserted.

Detection

The point and lock machine has integral electrical detection of the locks. A separate switch rail detector can be added by using a common alignment plate. The BR998 detector is ideal for this purpose, but other designs can be used.


Maintenance

Apart from occasional greasing of the cam slider and throw bar the
machine is maintenance free. The open construction of the chassis allows the easy replacement of all components.

Information and spec sheet
PDF file (522kB)