Abstract: A flow control nozzle and shutoff valve has a housing which defines inlet and outlet openings on opposite sides thereof, and a flow channel extending therethrough for communicating the inlet and outlet openings. A control member is journaled by the housing for rotation about an axis that intersects the flow channel. The control member has a ball-shaped portion that is positioned along the flow channel. An elongate flow passage is formed through the ball-shaped portion of the control member. A curved, screen-like, flow regulating formation is positioned at one of the ends of the flow passage. The control member is movable relative to the housing among first, second and third control positions to selectively bring its flow passage into or out of alignment with the flow channel, and to selectively position the screen-like formation near the inlet and the outlet openings.

Abstract: A sand blasting apparatus utilizes an aspiration system (1) to draw particulate media such as sand and a carrier gas such as air into a mixing chamber of a discharge nozzle through an aspiration probe and through a media supply conduit from a media reservoir, (2) to draw a liquid such as water into the mixing chamber through a liquid supply conduit from a liquid reservoir, and (3) to combine the liquid, the media and the carrier gas with a propulsion fluid such as compressed air so that what discharges from the nozzle is a controlled, uniformly combined flow of media, carrier gas, liquid and propulsion fluid. The aspiration effect needed to draw the media, the carrier gas and the liquid into the discharge nozzle is achieved by passing a flow of propulsion fluid along a flow path through the mixing chamber. The combined flow which discharges from the nozzle provides an enhanced blasting action.

Abstract: A drill press includes an overhead mount for supporting a power-operated drilling unit from an existing structure at locations above a work area, thereby enabling the accurate drilling of holes in large workpieces. An upright member is attached to one portion of the existing structure, such as a ceiling, and provides vertical support for a power-operated drilling unit. The upright member is extensible, enabling the drilling unit to be raised or lowered to accommodate workpieces of various sizes. Lateral support for the upright member is provided by brace members which connect the upright member to spaced portions of the existing structure.

Abstract: An improved spraying apparatus utilizes a novel method of withdrawing sprayable liquid from a pressurized vessel at a controlled rate, whereby the discharge rate of the spraying apparatus may be preset or selectively controlled within a desired range. Control of the rate at which liquid discharges from the apparatus is effected by pre-setting or regulating the effective size of one or more gas entry openings provided in a liquid withdrawal conduit which depends into the pressure vessel. The gas entry openings communicate with an upper end region of the vessel wherein a quantity of pressurized carrier gas is maintained. In one embodiment, all carrier gas must flow through the vessel before being discharged by the apparatus. In another embodiment, a restricted flow of carrier gas is combined with a mixture of gas and liquid issuing from the pressure vessel for generating a highly atomized, fog-like spray.

Abstract: A spray nozzle has an elongate tubular housing through which a gas-borne flow of liquid is ducted to a discharge opening that is formed in an end wall of the housing. The discharge opening is defined by the juncture of a transversely-extending, substantially linear groove which is formed in the external face of the end wall, and a converging passage which is formed in the internal face of the end wall. The converging passage and the linear groove cooperate to provide an essentially convergent-divergent discharge opening which tends to cause materials being discharged to form an elongate discharge spray pattern that is relatively narrow in width. Materials which discharge from the opening tend to travel in a relatively narrow range of planes that align with the linear groove, and tend to concentrate near opposite end portions of the discharge spray pattern. A deflector sleeve is carried by the housing and is adjustable longitudinally relative to the end wall of the housing.

Abstract: An aspirator probe for a sand blasting apparatus and the like has a tube-within-a-tube construction wherein the inner tube is a delivery tube for supplying a mixture of sand and air to a delivery hose, and the outer tube is an air supply tube which surrounds the majority of the length of the delivery tube. The delivery tube has a lower end which may be coextensive with the lower end of the air supply tube, or recessed within the lower end region of the air supply tube. The delivery tube has an upper end portion which projects upwardly beyond the upper end of the air supply tube for connection with the delivery hose. A communicating formation provides a passage for communicating both tubes to introduce, as by aspiration, a flow of air into the flow of sand which is being drawn into and through the delivery tube. In one embodiment the communicating formation takes the form a non-coextensive arrangement of the lower ends of the delivery and air supply tubes.

Abstract: A spraying apparatus utilizes a canister which has a threaded, upwardly opening body and a threaded lid for closing the body, with the lid and body cooperating to define a chamber for receiving and clamping containers of fluid to sprayed. The containers have upwardly opening necks which carry removable caps for confining sprayable fluid during storage and transportation. When the canister lid is threaded onto the body, a fluid-containing container is compressed between the canister lid and a bottom wall of the canister body. In one embodiment, the canister lid is provided with an additional inner set of threads which receive mating threads that are formed on the neck of the container so that a seal is formed when the container neck is threaded into engagement with the canister lid.

Abstract: A handle-operated flow control valve has handle portions which extend along opposite sides of a valve body. Aligned holes are formed through the handle portions and opposite body side portions. A double-looped support ring formed from resilient metal wire has end portions which extend through the aligned holes to pivotally mount the handle on the body. The loops extend in perpendicularly oriented planes and are configured such that either of them can be used to receive a support hook, whereby the handle-operated valve may be supported in either of two perpendicularly oriented planes by engaging the hook selectively with one or the other of the loops.

Abstract: A set of fittings for converting a conventional plastic bottle into a drip irrigation device, and the combination of said bottle with certain of the fittings installed thereon. The set includes a hand operable trepanning tool manipulatable from the exterior of the bottle for cutting a substantially circular hole in the side wall of the bottle near its bottom. The fittings include a discharge element and auxiliary attachment elements arranged and related to each other and to the size of the hole so that the discharge element can be installed on the bottle and secured to the bottle wall portion surrounding and adjacent the hole in sealed relation thereto. A flexible tube is connected to the discharge element for conducting liquid from the bottle to points of application. A flow regulator is provided on the tube for regulating the rate of discharge, and is capable of limiting the discharge to a number of preselected controlled drips, selectively.

Abstract: A hollow body has ball and socket connections at its opposite ends, respectively. Each ball has a bore therethrough with its inner end disposed in the body cavity. A flexible imperforate tube is connected at its opposite ends to the balls, respectively, in a manner such that liquids can pass, under positive or negative pressure, through the body cavity and balls without contact with the interior wall of the body cavity and the outer companion surfaces of the balls and their sockets. The tube is curvilinear endwise and the length thereof exposed in the cavity is greater than the distance between the inner ends of the bore of the balls so that it can self-adjust to different rocked positions of the balls relative to each other without substantial change in the cross section of its passage. The balls can be locked individually in various rocked positions.

Abstract: A check valve has a body with a seat therein and a valve plug movable toward the seat to closed position and away from the seat to open position. The valve plug has a forward face facing toward the seat and body inlet and a rear face facing away from the seat and toward the body outlet. The plug, at its rear face, has a stem of smaller diameter than the rear face so that an annular area of the rear face of the plug is exposed rearwardly toward the body inlet. The stem has fins thereon of a shape to impede the return flow of fluid relative to the stem in a direction toward the seat and thereby assist in rapid closure of the valve. The rear face of the plug is concave rearwardly and slopes inwardly from its outer periphery toward its axis at a very slight angle to further assist in rapid closure, while reducing outward radial components of flow of return fluid.