Abstract: This invention relates to road paving machines. Such machines are known in which there is a screed extending across the rear end of the machine and comprising two parts lying one behind the other. One part, the first, is fixed (except that it may be tilted and vibrated) relatively to the rest of the machine and the other part lies behind the first and is slidable along the first to enable the overall width of the screed to be varied. The second part is conventionally one of two similar parts that can be slid in opposite directions outwardly from retracted positions to project beyond the ends of the first part so that when the overall width of the screed is a maximum, the second parts project one from each end of the first.In one form proposed for such apparatus, each second part is carried from the first by two telescopic supports extending in the direction of the width of the screed.

Abstract: The paving material supplied into a hopper is conveyed by screw conveyors into a mold provided in the lower part of the apparatus thereby molding and laying the material. The paving material is densely compacted or consolidated in the mold, and when the paving material is conveyed under pressure further, the mold can be pushed up, and the reaction force of the conveying pressure acts to move the entire apparatus horizontally. Thus, structure having the same sectional shape as that of the mold can be formed and laid continuously on the ground.

Abstract: A mounting bar for a road making machine having adjuster bars which are pushable out laterally to adjust the working width and which are arranged behind a main bar. Guide tubes for guiding the adjuster bars for telescopic extension are movably supported on the main bar by connection means for movement in the direction of extension of the adjuster bars. The conection means is arranged between the main bar and an end of each guide tube remote from the adjuster bar.

Abstract: A pull type asphalt paver for spreading asphalt onto a road surface is disclosed as having means to avoid dump truck damage to the paver during operation and transporting thereof, means to readily enlarge the width of an asphalt layer on a road surface, and means to facilitate the metering and control of asphalt discharged by the paver on a road surface.

Abstract: An attachment for one side of an asphalt paving machine to permit laying of a gutter adjacent to and integral with a roadway surface at the same time as the roadway surface is being paved. The device comprises an extension plate to be vertically oriented in alignment with the screed of the asphalt paving machine and means associated with the extension plate to secure it in this position. The extension plate has a rearwardly curved, L-shaped base extending from side to side along the bottom of the plate for smoothing the asphalt. An end gate is provided at the outer end of the attachment to control the spread of asphalt to the required width. The attachment is intended to be bolted to an automatic screed extension or to the side of the screed of the asphalt paving machine, to replace the screed end gate.

Abstract: A slip form or mule for continuously laying concrete along the contoured side wall and top edge of a drainage ditch. The slip form is affixed to or pivotally mounted from the side of a construction machine that travels along the top side of the ditch. An integral open-bottomed sloping hopper feeds concrete to the slip form which has an adjustable top wall extension and an extendable end wall and sides that simultaneously adjust and are guided on the top slanted wall of the slip form to form a concrete slab of different widths. The frame also supports a trailing screed that is pivoted from and supported by one or more biased bell cranks and canted toward the slope of the ditch side. The hopper has a series of adjustable weirs and vibrating means to spread and consolidate the concrete before the front opening of the slip form.