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| glossary:glossary_t [2018/09/30 06:35] – [TCC] Bob Vetterlein | glossary:glossary_t [2019/08/16 19:14] – [Toggle] Bob Vetterlein |
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| A 'Toggle' is a combination of an operating lever and spring loading which causes the lever to be 'locked' at one or other extreme position. It is extensively used in mechanical assemblies, in which the extremes may be 'locked' by the 'toggle spring'. Another example is the 'Mole' self locking wrench in which the toggle action also gives strong mechanical advantage. \\ The Electronic version is also a device that can be 'latched in one position or another, indeed sometimes called a 'latch'. | A 'Toggle' is a combination of an operating lever and spring loading which causes the lever to be 'locked' at one or other extreme position. It is extensively used in mechanical assemblies, in which the extremes may be 'locked' by the 'toggle spring'. Another example is the 'Mole' self locking wrench in which the toggle action also gives strong mechanical advantage. \\ The Electronic version is also a device that can be 'latched in one position or another, indeed sometimes called a 'latch'. |
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| | ===== TORR ===== |
| | **T**rain **O**perated **R**oute **R**elease.\\ |
| | A feature of prototype interlockings when routes are cancelled by passage of the train without need for the Signaller to take any action. Prior to the introduction of TORR the Signaller had to pull the entrance button or the equivalent action on the VDU panel. |
| ===== Tortoise motor ===== | ===== Tortoise motor ===== |
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| There are many methods to implement Toti, and what method is appropriate depends the purpose for which it is required, and on which traction system is used (DC, DCC, or else) -- note: not all methods work with all traction methods. Detectors can use: mechanical switches; current detection (e.g. diode drop or coil); the transmission, reflection or interruption of light; magnetism; radio; ultrasound, or video. The method might give simple occupancy information, or more extended information including train identification (e.g. RFID, RailCom, Transponding, barcodes, Lissy, video etc.). See: [[glossary:glossary_t#train_detection|Train Detection]] | There are many methods to implement Toti, and what method is appropriate depends the purpose for which it is required, and on which traction system is used (DC, DCC, or else) -- note: not all methods work with all traction methods. Detectors can use: mechanical switches; current detection (e.g. diode drop or coil); the transmission, reflection or interruption of light; magnetism; radio; ultrasound, or video. The method might give simple occupancy information, or more extended information including train identification (e.g. RFID, RailCom, Transponding, barcodes, Lissy, video etc.). See: [[glossary:glossary_t#train_detection|Train Detection]] |
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| | =====TOU===== |
| | **T**urnout **O**perating **U**nit |
| | A mechanical device fitted below a point or turnout used to transmit the movement of the motor or manual system to the switch blades of the point/turnout. The Point Actuating and Locking Mechanism (PALM), a product of Ambis Engineering, is an example which may be seen toward the bottom of [[http://www.ambisengineering.co.uk/Products/Products_Index.htm|this webpage]]. |
| ===== Track circuit ===== | ===== Track circuit ===== |
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