Abstract: The invention provides a liner sleeve (8) adapted, in use, to be interposed between the external periphery of a round shank (3) of a point attack, mineral cutter pick (1), and the internal periphery of a circular, shank-receiving bore (5) of a pick box (6), the sleeve (8) being constituted by a plurality of individual rings (14A, 14B, 14C) stacked end-to-end in abutting relationship about a common longitudinal axis (15), the rings (14A, 14B, 14C) together having an axial length (17) approximating to the axial length (12) of the bore (5).

Abstract: A multilayer vegetation element is made up of a culture layer for holding vegetation, and a separation layer, and wherein a fire-retardant layer made of non-combustible material is arranged on top of the separation layer and below the culture layer.

Abstract: A machine that cuts sonic noise alert pattern (SNAP) depressions into the upper surface of asphalt highways. This machine is designed to cut depressions having a rectangular shape, with opposing transitional edges, which are relatively perpendicular to the edge of the road surface, and each have a smooth, even transition from the road surface to the cut depression. Further having a predetermined, but variable, depth along the center of the depression cut, with this center of the cut located at a relatively midpoint between the transitional edges. Additionally having an uniform section of virgin, uncut, asphalt located between each set of adjacent depression cuts. The machine, which has at least one rotating cutting head, moves longitudinally, relative to the desired placement of the individual cuts, in a non-stop, uninterrupted manner.

Abstract: An encapsulated cable for a suspension bridge or a cable-stayed bridge, the cable (10) being encapsulated by a wrap (16) which is formed by spirally winding a flexible strand (S) of a synthetic rubber tightly therearound. The strand is wound with each wind thereof overlapping one-half the width of the preceding wind, thereby forming a uniform thickness, double layer wrap. After the spiral winding step the wrap is heated to heat seal the superimposed layers to one another to thereby seal the seam formed therebetween and shrink the wrap into tight engagement with the cable. The strand, specifically the outermost layer of a laminated multiple layer strand, is precolored with a suitable colorant to eliminate the need for after painting the wrap to obtain a suitable color match between it and adjacent portions of the bridge structure.

Abstract: An apparatus for a percussive, down-hole drill, for positioning a split retaining ring against an internal surface of a drill casing including a chuck with a tapered top surface, a bit bearing with a tapered bottom surface, and a reversible split retaining ring sandwiched therebetween, the split ring having a tapered top and bottom surface, each tapered surface subtending an angle between 5.7 and 25 degrees, as measured from a perpendicular to a drill longitudinal axis, whereby a portion of any longitudinal load on the split ring is developed into a preselected maximum and minimum amount of radial load, to position the split ring in the casing, without damaging the casing.

Abstract: A dock float having a sealed elongated buoyant hollow housing with at least one longitudinal channel for securing a joist to which decking is supported. A floatable marine dock is constructed by interconnecting two similar floats by securing header boards in laterally extending recesses in the ends of each float. The width of the floatable dock is determined by the length of the header boards and decking. The length of the floatable docks may be varied by juxtapositioning in an end to end manner any required number of floats.

Abstract: A rotary lawn mower accommodating plural blades supported for rotation in a housing having two generally cup-shaped compartments, the side walls of each compartment merging along a common wall portion so as to form a continuous downwardly extending housing skirt with a lower rim, the trailing edge of the housing in normal direction of movement extending rearwardly and outwardly to provide an exit spillgate, the spillgate having top and rear ground facing sides and edges to provide an extended spillgate for distributing grass clippings, the rear facing edge of the spillgate and the side edges being outwardly and downwardly sloped in the preferred embodiment to enhance distribution of grass and other material ingested in the lawn mower.

Abstract: A railing hanger is provided for hanging a plant from a deck rail. The railing hanger has a pair of substantially parallel planar brackets each including a pair of integral oppositely opening hooks. An upwardly opening hook on one bracket is joined with an upwardly opening hook on the other bracket by a plurality of transverse U-shaped stiffeners. The brackets and the stiffeners collectively define an upwardly opening container for receiving a plant. A downwardly opening hook on each bracket is selectively self connecting to the top of the railing and resists movement of the container laterally away from the rail. In an installed position, the container is spaced laterally from the railing and the bottom wall of the container is substantially horizontal. A rearwardly extending leg on the railing hanger prohibits movement of the container toward the rail.

Abstract: An improved drive structure is provided for use between a lawn and garden type vehicle and a vertically adjustable belt driven, belly-mounted implement such as a rotary mower. The structure is usable with a standard length engine crankshaft which is mountable to project below the vehicle chassis and power the belt driven mower. It includes a stub shaft extension that is adapted to carry an electric clutch as well as a pulley for driving a belt entrained around the mower spindle pulleys. The extension permits positive power transmission to the drive pulley and also allows for it to be mounted substantially horizontal with the implement pulleys as they are shifted vertically in response to height of cut adjustments and/or variation in terrain. The extension further eliminates the need for jacksheave power relay arrangements commonly used to reduce the angles of drive belt entry and exit into and out of drive and driven pulleys.

Abstract: A boring tube has at least one tubular base body having a throughgoing longitudinal passage and an outer side and a coil arranged on the outer side of the base body and extending over its whole length. The coil has a pitch of 1 m-3 m and a radial width which starting from the outer side of the base body is at least 10 mm.

Abstract: An apparatus on a drilling tower platform for gripping a vertically extending drill casing includes a drill bushing having a pair of casing gripping assemblies mounted thereon, one assembly of the pair including a first and second gripping jaw, with a common actuator therebetween, and the other assembly of the pair including a third and fourth gripping jaw, with a common actuator therebetween, the pair of gripping assemblies being positioned around the bushing so that the first and fourth gripping jaws grip the casing at approximately diametrically opposed locations and so that the second and third gripping jaws grip the casing at approximately diametrically opposed locations approximately 90 degrees from the first and fourth gripping jaws, as measured around the bushing.

Abstract: In accordance with the present invention, a plurality of methods and devices are provided for solving important and serious problems posed by lateral (and especially multilateral) completion in a wellbore including methods and devices for sealing the junction between a vertical and lateral well. Methods are disclosed wherein deformable devices are utilized to selectively seal the juncture between the vertical and lateral wells. Such deformable devices may comprise (1) an inflatable mold which utilizes a hardenable liquid (e.g., epoxy or cementious slurry) to form the seal; (2) expandable memory metal devices; and (3) swaging devices for plastically deforming a sealing material.

Abstract: An indicator mechanism for visually displaying the full condition of a lawn mower grass collection bag, specially adapted for use on a riding lawn mower having a rear mounted bag. The indicator mechanism comprises a housing mounted to the discharge chute leading from the mower cutting deck to the collection bag, in a position visible to the driver during normal cutting operation of the mower. The housing includes a compartment in communication with the interior of the discharge duct through a suitable opening. An indicating member is hingedly disposed within the housing and is movable between a lowered position and a raised position in response to pressure variations caused by changes in the air flow within the duct. When the collection bag becomes full, high pressure within the duct forces the indicating member to its raised position, where it is visible to the driver through a window formed in the side of the housing.

Abstract: A pan drag device is disclosed for attachment to a concrete finishing machine movable longitudinally along an elongated body of poured concrete, with the finishing machine having a finishing unit engageable with the surface of the poured concrete and movable transversely across the body of concrete to grade the concrete. The pan drag device includes support members mounted to and extending rearwardly from the finishing unit and movable with the finishing unit and pan drag apparatus mounted to the support members for engaging the graded concrete surface to finish and seal the concrete surface.

Abstract: A herbicide applicator has an inclined underside surface supported at a selected elevation and slope with respect to the ground. Liquid herbicide is fed at a variably controlled rate to an upper edge portion of the inclined underside surface, and the herbicide flows down the underside surface without dripping before reaching the lower edge portion of the underside surface. Preferably, the underside surface is provided by a durable, non-absorbent, structural-grade material that has been roughened to increase its liquid storage capacity, for example, by grooves, indentations, or pockets. Preferably, liquid herbicide is uniformly fed to the underside surface by a distributor having a perforated tube and a strip of porous plastic sealed within a channel so that liquid fed to the tube must exit through the pores in the porous plastic strip.

Abstract: A guard structure for protecting egress-type alarm control devices. The guard includes a protective barrier having an access opening passing therethrough to permit immediate access to the control device. The guard further includes mounting brackets for mounting the protective barrier to a mounting surface over and in a spaced apart relation from the alarm device.

Abstract: A convertible sulky is interchangeable between stand-up and sit-down configurations so as to allow a mower operator to operate the mower from either a standing or seated position behind the mower. The convertible sulky comprises an H-shaped support wheelbase frame, to opposite legs of which a pair of wheel-mounting columns are affixed. Attached to the H-shaped support wheelbase frame member is a T-shaped mower attachment frame, having a central leg, an upper end of which is inclined forwardly H-shaped support wheelbase frame for attachment with the rear of the mower, by means of a ball-hitch fixture. A pair of generally L-shaped foot plates are secured to the frame structure formed by the T-shaped mower attachment frame and the H-shaped support wheelbase frame.

Abstract: A power tubing tong is modified by removing the gripping jaws and in attaching a sucker rod break-out adapter where the gripping jaws would normally be placed. The adapter includes a vise anvil and a vise block so that a sucker rod may be securely, rigidly fastened by a vise bolt moving the vise block so that the sucker rod is between the vise block and the vise anvil. This provides a tong capable of breaking a sucker rod joint when the pump attached to the bottom of the sucker rod is stuck. In use, the adapted tong would be used to break a sucker rod at some point between the surface of the earth and the pump when it was desired to pull the pump for routine maintenance and repair.

Abstract: This invention relates to a barrier module adapted to be connected in series with additional modules to form a continuous barrier system for collectively absorbing high-impact loads thereon by a road vehicle or the like. Each module comprises a container having a chamber adapted to be filled with a shock-absorbing medium, such as water. A continuous barrier system is formed by connecting a plurality of the modules together, in tandem, by one or more cables which function to transmit impact loads substantially uniformly to the modules concurrently. In carrying forth the method of this invention, the modules for the barrier system are placed in situ on a roadway or the like prior to their being filled with water.

Abstract: An implement includes a clevis assembly connected to the forward end of the implement hitch for limited fore-and-aft movement to permit holes in the clevis and of a tractor drawbar to become aligned for receiving a hitch pin, a latch then being operable to prevent further fore-and-aft movement of the clevis. First and second parallel legs of the clevis are provided with holes in which are received first and second bushing portions respectively of first and second jaws. The bushing portion of the first jaw is threaded and the hitch pin has a threaded end received therein, the pin being operable to move the first jaw towards the second jaw so that the jaws may tightly clamp a drawbar located therebetween.