A paver has a chassis and a trailing floating screed which is articulated on the chassis by a pair of tension arms. The setting angle of the screed relative to the ground is capable of being adjusted via actuating cylinders. The screed includes at least one tamper bar that is movable in upward and downward directions by a drive and having a variable number of strokes. Further, the screed has a bottom-side smoothing plate. At least one sensor configured for measuring the setting angle is provided in the vicinity of the rear end of the screed. The sensor is connected to an associated controller which is capable of adjusting the number of strokes or stroke rate of the tamper bar in order to adjust the setting angle of the screed to a predetermined desired value.

The concrete path paver of the invention comprises a generally rectangular open-ended box having a front wall and an inwardly sloped rear wall rigidly connected between a pair of side walls to define a bottom opening. An adjustable screed is positioned underneath the sloped rear wall from the rearward side of the bottom opening and extends a significant distance beyond the lower edge of the rear wall to form a slip-form mold. A platform is affixed rearwardly of the rear wall above the screed allowing an operator to stand thereon and control the flow of concrete from the cement truck into the box. The concrete path paver further comprises an arcuate or flat plate affixed to the lower front edge of the front wall of the box. The front plate functions as a ski to push and smooth dirt along the path that may have been disrupted by the tires of the cement truck. Thus, the tire tracks made by the cement truck as it pulls the paver are filled in and smoothed over prior to the concrete being laid. Further, the concrete path paver includes a pair of skids affixed along the lower edges of the sides to prevent the edges from digging into the dirt during pulling of the box.

A device for controlling the pressure of the extensible screed of a road paver on the material to be laid down, comprising hydraulic actuators capable of lifting the screed unit and structure for regulating the pressure of the hydraulic fluid without varying the vertical position of said screed, including distributors, non-return valves, maximum pressure valves and, at least one accumulating chamber, wherein an electric circuit for transmitting signals acts upon the hydraulic circuit to adjust the pressure of the fluid in the actuators.

A paver machine for applying paving material to narrow paths is disclosed. The machine includes a storage hopper and frame elevated above a roadbed by at least three wheeled unit members. A free-floating screed assembly located beneath the hopper and pivotally attached to the frame applies a paving material matte to the roadbed as the paver machine is moved along by a front end loader or the like.

Road surfacing machine having a front support (e.g. wheels) and a rear support (e.g. a rotatable roller) on which it can move along a road to be surfaced thereby. The body of the machine, which includes a hopper for storing material to be laid and an outlet for discharging it, is supported on the supports. Metering means (e.g. a screed plate) is positioned between the supports and serves to form a layer of selected thickness and shape of the said material on the road base. Bearing means (e.g. horizontal pivots) enable free relative angular movement between the front support on the one side and the metering means and a rear support on the other side about a longitudinal axis and about a transverse axis. Also a road surfacing machine having a front support, a hopper and a screed member, and including profiling means which comprise means for indicating the height and means for indicating the angle of inclination of the screed member.