A stationary frame is in the form of a box body by which mutually telescopic lateral extension frames are slidably supported, thereby providing a spreader which is light in weight and has no bent or torsion of the extension frames. The radiation emitter is adapted to direct radiation to a positioning area a defined distance from the radiation emitter, the radiation carrying a modulated location signal containing information corresponding to positions within the positioning area. The fuel pump is controllable to control the timing of commencement of fuel pressurization. The first and second data are output from the memory circuit and supplied to the at least one data connection upon third and fourth edges of the clock signal. In addition, the coolant can be advantageously utilized for cooling the thermal or electrochemical process. A spring is disposed at the pin for preventing an unintended rotation of the pin.