Abstract: A machine for the injection of liquid into the surface of soil comprises a sledge having a surface compacting base bounded by two runners, the lower surface of each runner being below the level of the compacting base. The base has a transverse slot dimensioned to receive a hollow pressurizable injection bar which has a lower face equipped with injection orifices, the lower face being flush with the compacting surface of the compacting base when the bar is in position. The machine is particularly useful for the injection of a soil stabilizing medium into soil while the soil is compacted. By this means it is possible to produce a compacted raised strip of soil which is smooth and stable and which in desert conditions prevents a build up of sand on roads.The invention includes a method for stabilizing soil by forming a compacted raised strip of soil and injecting a soil stabilizing medium into said strip to bond the compacted soil.
September 29, 1976
Date of Patent:
February 28, 1978
The International Synthetic Rubber Company, Ltd.
Abstract: Apparatus for slip forming concrete, having a form, and a hopper for receiving concrete and introducing the same into said form, and incorporating water extraction means, adapted to be positioned in the wet concrete, for extracting water therefrom thereby producing a more stable formed concrete mass, capable of standing on its own after the form has moved on.
Abstract: A machine for concurrently laying a dual-layered cementitious composition on a base surface with the layers having different compositions. A self-propelled main frame has an adjustable platform frame overlying the main frame. Adjustable support elements are coupled to the main frame for changing the position of the main frame to conform with the grade characteristics of the base surface. A first receiving unit is coupled to and is extended in front of the main frame and receives the first cementitious composition. The first receiving unit includes a first strike-off element extending transversely to the normal direction of movement of the machine and is spaced a predetermined distance above the base surface. Upon movement of the machine forwardly, a bottom layer of the first composition is formed and shaped. A second receiving unit is coupled to and is extended between the main frame and the first receiving unit for receiving the second cementitious composition.
Abstract: The embodiment of the invention disclosed herein is directed to a curber and sidewalk-forming apparatus for contouring concrete along a predetermined run. The apparatus includes a hopper having at least one wall thereof sloping downwardly toward an opening formed in the bottom of the hopper which coincides with an opening formed in a slide plate surface at the bottom of the machine. Flowable concrete passes from the hopper through the opening in the slide plate and is directed rearwardly of the apparatus while the apparatus is transported in a predetermined direction along its run. A vibrating apparatus is secured to one of the walls of the hopper to insure proper flow of the concrete along the interior surface of the hopper so that the concrete continuously flows beneath the apparatus for forming curbs, gutters and sidewalks. A motor generator set is secured to the slide plate and produces electricity to operate electrical motors of the vibrator and winch secured thereto.
Abstract: A barrier levelling tool intended to be attached to median barrier forming continuous casting machines which provides a reinforced chute-like extension bridging the cast barrier and trailing the casting machine and which is adjustable from the face of the barrier casting machine so as to gauge and screed the flow of concrete in a smooth manner and in elimination of unsightly dips and peaks and so as to provide a constantly level top surface fully screeded and complete as it leaves the trailing chute.The present invention is a barrier levelling attachment for levelling continuously cast barriers and which trails behind the extruder head or gate of the casting machine and confines and levels the crown or upper surfaces of the barrier in avoidance of previously experienced sudden dips and peaks and in unlevel upper surfaces. The structure is adjustable and is sufficiently rigidified as to provide a supplemental screeding and finish trowelling effect on the concrete barriers as they are continuously cast.
Abstract: A slipform paving apparatus having a variable width frame assembly supported upon independently adjustable and steerable leg and track assemblies that are positionable in a paving profile or in a travelling profile. A detachable steering cable feedback and follower assembly interconnects a track assembly on one side to the respective track assembly on the other side, providing potential single side steering control. Road building implements include in sequence and in close proximity a traversing paddle assembly, a height adjustable vibrator assembly, a variable height strike-off assembly, a vibrated grout screed assembly, a profile pan assembly, and a float pan assembly cooperating with retractable slipforming means to form a finished concrete road lane upon a substrate. The implements are modularly designed so as to be capable of being parted and increased in road width building capability by the interdisposition of extension attachments between sections of each implement.
May 3, 1974
Date of Patent:
July 20, 1976
George William Swisher, Jr., Donald W. Smith, John F. Phillips
Abstract: A slip form or screed for forming elongated concrete formations, such as a highway barrier wall wherein a concrete receiving hopper is located forwardly of the slip form, and the front wall of the hopper is provided with a hinged gate pivotal between open and closed positions. The gate structure permits stationary objects to enter the hopper and slip form as to become a part of the formed concrete formation, and the gate structure includes concrete retaining means to confine the concrete when the gate is opened, and control the flow of concrete forwardly through the opening when stationary objects are received within the form.
Abstract: A curbing machine utilizing slip form casting of cement or concrete is disclosed which will continuously cast curbing or pavements and simultaneously with the casting operation provide the necessary expansion joints in the cast curbing. The curbing machine includes a conventional tractor with an additional speed reduction gear box. A unitary open bottom hopper and slip mold is removably and adjustably carried between the wheels of the tractor by hydraulic cylinders permitting both vertical and tilting adjustment of the mold to adjust the mold to the contour of the ground. Means are provided within the hopper and immediately in front of the slip mold to form the expansion joint in the cast curbing. In an alternate embodiment, the slip mold is mounted outboard of the tractor with hydraulic cylinders provided to raise, lower and tilt the slip mold.