Abstract: A speed change gearbox for agricultural tractors and similar vehicles has an elongate casing rotatably mounting input and output shafts which are coupled by gearing comprising reduction means selectively operable to provide one of a plurality of reduction ratios, and a final gearing stage which serves to set a particular range of ratios. The reduction means includes an epicyclic gear mechanism provided with associated hydraulic control means for selectively controlling movement of various of its elements, and pairs of continuously meshing gears operatively selectable by further hydraulic control means. The arrangement of the hydraulic control means is such that they are all centered on the input shaft which enables the transverse bulk of the gearbox to be minimized.

Abstract: The invention relates to a base or adjustment plate for a cabinet hinge for the adjustable attachment of a hinge arm to a cabinet part. The base or adjustment plate consists of an intermediate carrier which can be fastened to a cabinet part and of a bearing element which is fastened to the intermediate carrier in a manner such that it is adjustable along a first axis in space extending parallel to the surface of said cabinet part and serves for the adjustable attachment of the hinge arm in at least one second axis in space extending perpendicular to the first, a guide with lateral guide surfaces being formed between the intermediate carrier and the bearing element by at least one recess extending in the direction of said first axis in space and at least one guide extension engaging into the recess, the guide preventing displacement of the bearing element perpendicular to the first axis in space. Means are furthermore provided for pressing the bearing element against the intermediate carrier.

Abstract: Fuel economy of a multi-cylinder internal combustion engine has been improved by allowing, when a vehicle is at a standstill, the engine to run on selected cylinders of all. The idling operation of the engine on the selected cylinders has been made smooth by the provision of a switch valve in a control circuit of the transmission. With the switch valve, as soon as an accelerator pedal is released when the vehicle is at a standstill, hydraulic fluid will be drained from the control circuit to render a gearing of the transmission in a neutral condition even if a manually selector valve in the control circuit is held in a drive range position. This prevents transmission of load to the engine through the hydrokinetic unit which otherwise would occur when the manually selector valve is in the drive range position.