Abstract: A visual message indicating barricade is presented having a support means adapted to hold the barricade in a relatively upright position, at least one body affixed to said support by a securing means, at least one selectively movable member connected to the body, and at least one visually discernible message presented corresponding to each of the members, wherein the members can be selectively positioned in either a concealing or a revealing position with respect to the visual message corresponding thereto.

Abstract: A pneumatically driven impact type set of tools including a plurality of interchangeable components having, in addition to a manually gripped housing, a common pneumatically driven reciprocating piston actuator assembly, an interchangeable set of tool heads having respectively different types of work tools associated therewith, a removable hand actuated pneumatic valve and one or more extension members which may be selectively coupled between the housing and pneumatic valve. One form of the pneumatic valve includes a safety feature in the handle sub-assembly for preventing inadvertent actuation of the valve upon release of the handle.

Abstract: A pneumatically driven impact type of descaler tool includes a manually gripped housing having a rear portion of generally circular cross-section which includes therein a pneumatically driven reciprocating piston assembly which acts as a hammer and a right angled forward portion having a forwardly tapered nose which is particularly adapted for fitting into corners of a workspace. A pivoted solid arcuate body shaped in the form of a quarter circle forms an anvil. A descaling head is secured to the lower end of the anvil and is adapted to be actuated at the other end by the piston assembly which imparts a srelatively strong repetitive impact motion to the descaling head when held against a metal work surface.

Abstract: A stud alignment and positioning tool is set forth wherein a plurality of rigid jaws are securable to a series of wall studs by use of temporary securement means such as nails and the like. The rigid jaws are integrally secured to rigid interconnection members formed of angularly oriented planar portions. The integral connection of the rigid jaws to the interconnection members are at acute angles to one another to enable the instant invention to triangulate between framing portions of a studded wall developing rigidity and strength in the alignment and temporary securement of the studs.

Abstract: There is disclosed herein a machine for removing coatings from uneven surfaces such as concrete and the like. The machine includes a power system for driving a pair of cutter head assemblies. The cutter head assemblies are rotated in opposite directions to help stabilize the machine and to throw the cuttings out of the way. Each cutter head assembly has a cutter head with a plurality of peripheral sides or facets and cutter bars are spring loaded thereon to allow cutting tools held by the cutter bars to effectively float on the concrete surface and follow uneven sections of the surface. The cutter head assemblies are mounted on the machine so that they can tilt forward and backward and from side to side to facilitate the cutter head assemblies following uneven surfaces.

Abstract: There is disclosed herein a machine for removing coatings from uneven surfaces such as concrete and the like. The machine includes a power system for driving a pair of cutter head assemblies. The cutter head assemblies are rotated in opposite directions to help stabilize the machine and to throw the cuttings out of the way. Each cutter head assembly has a cutter head with a plurality of peripheral sides or facets and cutter bars are spring loaded thereon to allow cutting tools held by the cutter bars to effectively float on the concrete surface and follow uneven sections of the surface. The cutter head assemblies are mounted on the machine so that they can tilt forward and backward and from side to side to facilitate the cutter head assemblies following uneven surfaces. In one embodiment a plurality of cutter bars are pivotally mounted to the peripheral faces of each cutter head, and in another embodiment cutter pads with diamond bits are spring loaded and extend from the bottom surface of the cutter head.

Abstract: For low pressure gaseous wells, an oil/gas separator is mounted at the end of a production string to provide a continuous upwardly spiralling separating velocity to the oil/gas entering the tool in order to separate outwardly at least sufficient gas to reduce gas lock in the sucker rod pump mounted in the production string. The oil/gas separator of this invention includes a separation chamber having a continuously upwardly spiralling ramp and an internal collection tube to collect the separated gas and move the gas upwardly and out of the tool and into the annulus of the oil well. The method of this invention is practiced by directing an oil/gas mixture from a producing zone in a helical direction to impart centrifugal separating velocity at varying levels to the mixture to cause gas to separate from the mixture.

Abstract: An overdrive mechanism having offset input and output shafts permits a motor vehicle to be operated in an overdrive gear in a two wheel drive mode. A lockout prevents concurrent operation of the vehicle in overdrive and four wheel drive. The overdrive is arranged to reduce the magnitude of cyclic loading in single cardan universal joints transmitting engine torque through an angle.