Abstract: Plate-like ballast weights attached by noses to a support or carrier element located at the front of an agricultural prime mover. The nose of each individual ballast weight is spaced from the rest of the ballast weight by such an amount that the latter can be hung by the nose on the support or carrier element in a hanging-in or attaching position, and can subsequently be pivoted into its end position with the nose on a slope or inclination of the support or carrier element. A projection in the lower region of the ballast weight catches in a recess in the end position of the support or carrier element. The ballast weights can be secured in this end position by an arresting arrangement in the region of the noses thereof.

Abstract: A system for heating the operator's cabin of a machine powered by an internal combustion engine includes a primary oil conduit system wholly contained within the oil pan of the machine and having a high-pressure pump for feeding oil under heat and high pressure from the oil reservoir and back thereinto through a throttling element for heating the oil as it passes therethrough. A secondary oil conduit system operating under a pressure less than that of the primary system has an intermediate heat exchanger in heat exchange relationship with the oil heated by the first system, and has a heating heat exchanger located in the operator's cabin for supplying heat thereto. The secondary circuit contains liquid which is circulated by a circulating pump.

Abstract: A liquid heating system includes a high-pressure hydraulic pump for suctioning the liquid from the liquid reservoir and delivering it thereto through a liquid conduit into which the pump is coupled. A drive is provided for the pump, and a pressure-reducing element is coupled into the conduit downstream of the pump for reducing the pressure and elevating the temperature of the liquid. The element has a fixed flow passage, and a heat exchanger is coupled into the conduit downstream thereof. An arrangement for controlling the discharge rate of flow produced by the pump is provided as a function of the calorific heat required to be generated by the system and/or of the temperature of the liquid.

Abstract: A heating system for the service cabin of a machine operated by an internal combustion engine includes a high-pressure supply pump for feeding oil from the engine oil sump through an oil conduit and returning it thereto, a pressure-reducing element in the conduit for elevating the temperature of the oil, a line by-passing the element and having a flow control valve therein, a heat exchanger connected into the conduit downstream of the element, the pump being located within the internal combustion engine together with its high pressure line to thereby confine any high pressure leaks from such line to the interior of the engine and its oil sump.

Abstract: A vehicle with at least three axles two of which are combined to form a double-axle unit and which are resiliently connected to a frame. The vehicle furthermore comprises a first device for automatically lifting and lowering one axle of the double-axle unit while a control element is provided for controlling the lifting and lowering device in conformity with the respective axle load. The vehicle also comprises a second device which ascertains the respective total vehicle load to be taken over by the respective double-axle unit or the measured values of the vehicle load and actuates the control element in conformity with the total vehicle load or ascertained measured values.