Abstract: An exhaust gas recirculation supply tube for an automotive engine includes an inlet tube with a first end adapted for connection with a source of exhaust gas from an engine and a second end having one portion of a telescoping joint, and an outlet tube with a first end adapted for connection with an exhaust gas recirculation control and a second end having a telescoping joint portion slidingly engaged with the telescoping joint portion of the inlet tube. A gas sealing member extends about the telescoping joint portions of the inlet and outlet tubes.

Abstract: A tractor having a hydraulically driven power takeoff shaft in which manipulation of a control handle in the forward direction causes the speed of the shaft to be varied in accordance with the position of the handle and also in accordance with engine speed. When, however, the control handle is moved to the extreme forward position, the power takeoff shaft is operated at either of two selected constant speeds regardless of engine speed as long as the engine speed is adequate to maintain such constant speed. When the control handle is moved in the opposite direction towards reverse position, the power takeoff shaft is driven at a variable speed, dependent on the position of the handle and on the engine speed. This speed is relatively low as compared with that of the forward speeds.The tractor is provided with a manually operated energy shutoff control adjacent the power takeoff shaft, in the form of a push button switch which can be actuated whenever a sudden termination of the shaft operation is desired.