smooth patch coinciding with the height of the paved surface 14 in operation the apparatus 10 is thus passed along a trench in the condition of fig1 as the apparatus moves the paving material passes downwardly along the chute 98 to fill the hopper 18 the passage 38 and the portion of the trench 12 directly beneath the apparatus the weight of the paving material forces the doors 30 downwardly and outwardly against the edges 36 of the trench and the forward movement of the apparatus urges excess paving material inwardly and downwardly into the trench the material which is not forced into the trench is 34 extruded 34 from the rear opening 26 to form the portion 28 extending above the paved surface during this process the unit 20 constantly vibrates the apparatus 10 and the paving material passed therethrough causing the material to settle and become compacted as it is passed to the trench in many cases the vibrational forces will be within a vertical plane enhancing the compaction of the material by the sloped surface portion 22 when it is desired to adapt the apparatus 10 to a trench of different width or height this is accomplished with the adjusting mechanisms of the apparatus 10 specifically the position of the side walls 24 can be adjusted using the screw mechanisms 64 and the bell cranks 56 while the width of the guide mechanism 82 can be adjusted with the screw element 90 the height of the extruded portion of paving material can be varied by the screw thread.