Abstract: This invention provides an adjustable, removable, reusable masonry tool for retaining expansion material employed in concrete work. The tool includes a plurality of elongated, substantially U-shaped caps which retain the expansion material, the caps being slidably engaged together for adjustment of the tool's length.

Abstract: An asphalt paver is illustrated having a hopper carried by a rigid longitudinal frame upon which is mounted a transversely oscillatable frame carrying wheels intermediate the hopper and a rearwardly positioned screed.

Abstract: A road marker having a body with an internal slot recess adjacent an edge of the body accessible from the underface of the body, a reflector panel housed in the slot recess with end and width clearance in the slot recess and with a thickness such that the panel is a sliding fit in the slot recess, retaining means to retain the panel in the slot recess and an aperture in an edge of the body communicating with the slot recess to allow viewing of portion of the reflector panel housed in the slot recess.

Abstract: Apparatus for mounting ancillary equipment between two relatively movable members of, for example a mine roof support, comprises two substantially parallel arm members pivotally mounted between the two relatively movable members, two rotatable members secured one to each arm member, and at least one cross member pivotally mounted at opposing ends to the rotatable members. The members of the apparatus are arranged so that the axes of rotation of the rotatable members, the axis about which the arms pivot, and the axes about which the cross members pivot, are each transverse to the other two. This arrangement can be used to provide a mine roof support with an operating platform having mountings which have a degree of movement akin to a universal joint.

Abstract: A shield for improving the wear resistance and life of holding support blocks for cylindrical carbide-tipped cutting bits used in drum pulverizer and wheel machines of the type used for pulverizing and cutting refractory materials is disclosed. The shield includes a short cylindrical metal container having a bottom annular wall supporting a coaxial central tube section. The annular space between the tube and inner surface of the cylindrical wall of the container contains and is hard brazed to solid tungsten carbide segments in the shape of sectors of a flat annular ring whose upper surface is parallel to the upper annular wall surface of the outer cylindrical wall of the container. The bore of the central tube is adapted to receive the shank of a cutting-bit, and the bottom wall of the cylindrical container of the shield is welded to the face of a cutting-bit holding block, with the bores of holding block and tube aligned, to permit insertion and removal of cutting bits into the bore of the holding block.

Abstract: A generally closed circulatory system of tubing between a first heat exchanger built into the shaker head, and a second heat exchanger positioned remote of the first heat exchanger. The closed circulatory system contains a coolant which is coursed through the first heat exchanger whereat heat is pulled from the shaker head into the coolant. The heated coolant is then coursed through the second heat exchanger where the increased heat of the coolant is expelled. The coursing of the coolant through the two heat exchangers is a generally continuous cycle.

Abstract: An underwater excavator in which when energized by a supply of hydraulic oil or other means a propeller is set in motion with water being drawn through a water intake into a cylindrical tube and expelled at the water outlet to create a flow of water of sufficient volume and velocity to blow away seabed materials. Thrust and torque are counteracted by the suction force developed at the water intake. Optional filter nets or sieves may be fixed to a foot of the machine to capture samples of the material washed out of the seabed.

Abstract: A single pivot and ledge structure located on the back wall of a lower duct of cotton harvester duct structure supports an upper telescoping duct section and facilitates free movement of the sections relative to each other, for example, when the row unit which is serviced by the duct is moved transversely or raised and lowered relative to the harvester frame. The pivot includes a bushing which extends rearwardly from an angle forming a ledge on the lower duct section. The upper duct section extends over the lower duct section and includes a U-shaped bracket which rests on the ledge. An aperture in the U-shaped bracket is received over the bushing to help position the duct sections and permit free pivoting of the upper duct section in both the fore-and-aft and the transverse directions.

Abstract: An improved circular saw blade assembly for cutting in a single pass a two tier groove in a concrete areaway. The saw blade body having a first row of cutting elements in the form of a metallic matrices containing fragmented diamond particles secured to the blade body periphery. A plurality of cutting blocks formed of the same material as the cutting elements are positioned in a circular configuration intermediate the periphery and the center of the blade body. The cutting blocks are secured to the blade body so as to position the cutting faces on the cutting blocks on each side of the blade whereby the cutting faces coact to cut a groove in the concrete above and wider than the groove cut by the peripheral cutting elements.

Abstract: An apparatus and method are disclosed for pivoting a screed assembly during screeding of placed and/or poured, uncured concrete or like loose, spreadable materials to maintain proper screeding contact by the screeding assembly with the concrete or like material by counteracting the force of concrete or other like material acting against the screed assembly as it is moved along the concrete. The apparatus includes a support, preferably of the self-propelled type, a boom and boom mount, and a pivot between the boom and the screed assembly. The axis of the pivot extends generally perpendicularly to the screeding direction in which the screed sassmblyis moved. A power source, such as a pair of fluid cylinders, rotates the screed about the pivot axis, preferably in response to an electro-hydraulic leveling sensor mounted on the screed. The lateral incline of the screed perpendicular to the screeding direction may be controlled about additional pivot axes orthogonal to the first.

Abstract: An asphalt-paved road surface is rejuvenated in two stages. First, an exposed upper asphalt layer is heated to a selected temperature and depth. The heated upper asphalt layer is then removed from the road surface to expose a lower asphalt layer. In the second stage of the process, the lower asphalt layer is heated to a selected temperature and depth. The lower layer is then either broken up and left in place, or else it too is removed from the road surface. In the former case, asphalt removed from the upper layer is replaced on top of the ruptured lower layer; in the latter case, asphalt removed from the upper layer is comingled with asphalt removed from the lower layer. The removed/ruptured or comingled asphalt (as the case may be) is then pressed back against the road surface to repave the road.

Abstract: A logging tool cable head for supporting the sonde on a cable is disclosed. It has an upper end which affixes to the cable and a lower end affixed to the sonde. The lower end supports an inwardly directed electrical grounding contact. The upper end supports a rotatable, indexed cam having facing upper and lower shoulders sized and located to bear against the contact, so that electrical contact is indicated on overloading. Indexing of the shoulders relative to the contact is achieved. There is also an adjustable centering spring system which locates the contact relative to the two shoulders.

Abstract: An agricultural baler having a feeder mechanism operable to accumulate a charge of crop material in a feeder duct thent transfer an accumulated charge of crop material into a bale case. The feeder mechanism includes a plurality of tine bars provided with sets of tines so that at least two sets of tines are operative in the feeder duct at any given instant. A first tine bar carries two sets of packer tines while a second tine bar carries a set of packer tines and a set of stuffer tines. A third tine bar carries a set of packer tines along with a set of combination packer and stuffer tines. All of the packer tines have outer ends following a first path of movement and the stuffer tines have outer ends following a second path of movement which is offset relative to the first path of movement. The combination packer and stuffer tines have outer ends following a third path of movement which is offset relative to both the first and second paths of movement.

Abstract: The present invention relates to an apparatus for inverting a windrow of hay or the like. The apparatus is in the form of an implement to be drawn by a tractor or any other appropriate vehicle and comprises a carriage supported at the front by skids and on which is mounted a pick-up conveyor assembly for gathering and elevating material from a windrow and depositing the elevated material on a rotating platform which moves the material 180 degrees along a circular path. The material is then discharged on the ground in inverted condition by the forward motion of the carriage.

Abstract: A subsurface well safety valve having a curved flapper closure member and method making. The curved flapper has a concave sealing surface coacting with a valve seat. A flow tube has a lower end contoured to the flapper sealing surface. A flapper can be made out of a tubular member in which the inside has been honed providing a flapper with a concave surface which forms a sealing surface.

Abstract: A remediating apparatus has a conveyor which moves contaminated material, a main hopper which holds a load of contaminated material and dispenses the material onto the conveyor at a receiving location, and an auxiliary hopper adjacent the main hopper which holds a load of an absorbent material and dispenses the material onto the contaminated material as the material is moved toward a transfer location. The apparatus also has an oxidizing material applicator and an aerator associated with an elongated mixing chamber. Also, a mixing and conveying auger rotatably mounted in the mixing chamber concurrently mixes the contaminated and absorbent material received in the mixing chamber at the transfer location and transports them from the transfer location to a deposit location. Spray nozzles of the applicator connected in communication with the mixing chamber spray pressurized oxidizing material on the mixture of contaminated and absorbent materials.

Abstract: A sealed joint in a concrete highway or the like is installed in a channel formed above the usual shrinkage control cut or construction joint between adjoining concrete slabs by placing in such channel a preformed and relaxed length of a ductile and elastic material and bonding it to at least part of the concrete faces of the channel by a ductile and elastic adhesive. In some instances, an anti-bonding agent is applied to portions of the preformed and relaxed length to provide for joint expansion and retraction. The joint installation channel is preferably unusually shallow and may be dry cut. Its width is sufficiently narrow that traffic loads are carried by the concrete bordering the channel. The preformed length is preferably of strip formation, which is introduced into the channel from a stable roll of same.

Abstract: A manhole cover support resistant to infiltration of surface water is shown. Such support is adapted for emplacing over and raising the effective grade of an existing manhole cover receiving structure and accommodating a new layer of paving around its perimeter and a manhole cover therewithin. The support is characterized by: a body that has at least one adjustable joint for rendering the cover support adjustable in its outer perimeter dimension, the body comprising a base having a ledge for a manhole cover, the ledge having a lateral cover keeper arising therefrom; and deformable seal elements comprising synthetic and/or natural resin-containing material, the seal elements being adapted to interact with deformable plug means for the adjustable joints to block substantial infiltration of surface water, and one of the seal elements being disposed on the ledge and at least another of the seal elements being disposed substantially around the outer perimeter of the body.

Abstract: A compaction apparatus including a pair of frames. A compaction drum is mounted for rotation on a first of the frames and resilient isolation mounts interconnect the two frames. A vibratory unit is mounted on the first frme and includes pair of eccentric weights arranged so that vertical vibratory forces generated by the weights are added, while fore-and-aft vibratory forces are cancelled. The isolation mounts are at different distances on opposite sides of a vertical plane passing through the axis of the drum, so that the vertical vibratory forces acting through the two isolation mounts produce unequal moments tending to rotate the drum and subject the soil to a shear-type action.

Abstract: In a rotary brush cutter with a rotating shaft, a plurality of cutting blades extending substantially radially from the shaft and a drive for rotating the shaft, herbicide is fed adjacent a cutting portion of the blades while the blades are rotated whereby the herbicide is applied to brush being cut.