Showing papers on "Screed published in 1977"

Method for screeding cement

Abstract: A screed support and method for screeding cement comprises digging a plurality of arranged holes in the bed surface of the area to be cemented Unsolidified cement is poured into each of the holes, a hollow sleeve is inserted into the wet cement and positioned therein in a substantially vertical orientation, and the cement is cured to a solidified state A rail support member having a threaded rod and a mating, adjustable collar, is telescopically inserted into each of the sleeves Screed support rails are connected with each rod, and the elevation and inclination of the same is adjusted in infinitely small increments by manipulating each collar in accordance with the desired, predetermined requirements Additional unsolidified cement is then poured between the rails, and a self-propelled screeding machine is passed thereover to smoothen and level the uneven free surface of the additional cement Before the additional cement hardens, the rails are disconnected from the support members and the collar and rod assemblies are extracted from the sleeves

Gutter attachment for asphalt spreader

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.

Concrete panel making apparatus

Abstract: Apparatus for horizontally casting a panel, preferably a non-composite insulated panel of reinforced concrete of substantial area and thickness in a heated mold. The mold is part of a rotating mechanism and lift frame for rotating and vertically stacking the panel when the panel is partially cured. Reinforcing steel is put into a heated mold. A layer of concrete is poured into the mold, forced into close and intimate contact with the mold and through the reinforcing steel by means of a traveling auger, striker plate and vibrating screed; insulation board and shear connectors are placed in the mold, further reinforcing steel is then placed in the mold, and a second layer of concrete is poured into the mold and forced through the reinforcing steel, by means of the traveling auger, striking plate and vibrating screed, which at the same time as they force the concrete through the steel, produce a smooth finish on the non-mold contacting surface of the concrete panel. The mold can be heated by means of heating tubes attached to the bottom outside surface of the mold. When the panel has set, hydraulic cylinders pivot the mold with its contained panel on to supports and into a vertical position for stacking and storing the finished panel.

Jobsite apparatus for horizontal casting and vertical stacking of thick insulated concrete panels

Abstract: Method for horizontally casting a panel, preferably a non-composite insulated panel of reinforced concrete of substantial area and thickness in a heated mold. The mold is part of a rotating mechanism and lift frame for rotating and vertically stacking the panel when the panel is partially cured. Reinforcing steel is put into a heated mold. A layer of concrete is poured into the mold, forced into close and intimate contact with the mold and through the reinforcing steel by means of a traveling auger, striker plate and vibrating screed; insulation board and shear connectors are placed in the mold, further reinforcing steel is then placed in the mold, and a second layer of concrete is poured into the mold and forced through the reinforcing steel by means of the traveling auger, striking plate and vibrating screed, which at the same time as they force the concrete through the steel, produce a smooth finish on the non-mold contacting surface of the concrete panel. The mold can be heated by means of heating tubes attached to the bottom outside surface of the mold. When the panel has set, hydraulic cylinders pivot the mold with its contained panel on to supports and into a vertical position for stacking and storing the finished panel.

Apparatus for spreading a stream of particles

Abstract: An apparatus for spreading a stream of particles onto a moving carrier. Uses a chute for containing and delivering particles; a screed bar, movable relative to the moving carrier to control the thickness of a layer of particles delivered from the chute to the carrier; and a pair of rotatable cylindrical doctor blades, substantially coaxial with each other and positioned at opposing ends of the screed bar to control the thickness of a layer of particles delivered from the chute to the carrier at opposing ends of the screed bar. The screed bar and the two doctor blades together control the thickness of the center and the two sides of a continuous stream of powder. Preferably the carrier is the bottom roller of a pair of compaction rollers which receive the stream of powder and compact it preparatory to sintering.