| 摘要 |
A locomotive controller in which a throttle handle assembly is selectively capable of operating as an engine power control or as a dynamic brake control as controlled by the action of a selector lever. The mechanism incorporates detent means which are effective only during action of the throttle handle as an engine power control to position the handle in any selected one of the predetermined throttle positions. An escapement mechanism acts to prevent continuous power increasing movement of the throttle handle past at least the first and second throttle positions when in the power mode. The escapement is disconnected from the throttle handle assembly when the dynamic brake mode is selected, thus providing an unmistakable indication to the operator, when he advances the throttle handle, of whether the unit is operating in the power or dynamic brake mode without requiring his observation of the control panel.
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