operating the adjustment mechanism a winch 22 is also provided for pulling large log segments to the device or for pulling the device to the area where the large log segments lie after the device has been hauled to the work site by a truck or other vehicle the device is shown in a horizontal position ready for transport and has been designed for operation in this horizontal position in the vertical position shown in fig5 or in any of the various angular positions therebetween in the horizontal position shown in fig1 the device is compactly arranged on a fender 24 of trailer 12 in a receiving clip 25 and has no protruding elements which could interfere with transport in addition with the present device in a horizontal position log segments can be split and simply pushed over a lowered side wall 26 of the trailer where they remain ready for transport to the point of use engine 16 provides power for the adjustment mechanism the log splitter 14 and the winch 22 hydraulic pump and reservoir 18 provides a sufficient supply of hydraulic fluid for operating both the log splitter and the adjustment mechanism through lines or hoses 28 the position adjustment mechanism is detailed in fig2 through 5 the log splitter is pivotally connected to the frame 30 of trailer 12 and can be pivoted for operation in horizontal vertical or angular positions mounted on the trailer in front of fender 24 is a rigid vertical support arm 32 and a rigid angular support arm 34 a pin 36 is inserted through.