Abstract: The sprayer comprises two main functioning units; namely, a flow control system incorporated in the chemical concentrate jar top closure and a spray nozzle integral with the closure for dispensing dilute solutions of fertilizer, pesticides and the like as supplied by the flow control system. The control system comprises an ejector for drawing concentrate from the reservoir jar and a pair of coaxial, independently rotatable valve elements, one, acting with fixed structure, serving to turn the water supply off or direct the water into the chemical concentrate jar or through the unit to the spray nozzle, the other, operating in conjunction with the first valve element, controlling by means of flow resistance in a labyrinth, desirably in conjunction with an orifice metering disc, proportionate feed from the jar of chemical concentrate to the main water stream. Proportionate feed may be accomplished without the flow resistance control by appropriate dimensioning of the ejector.

Abstract: An external rotor comprises an annular case within which is the laminated stack forming the motor drive members and end members at each side of the stack. These are heat fitted together to form an annular blank which is then machined to form an axial bore therein and end faces normal to the bore. A stator laminated stack is heat fitted onto an axle and thereafter peripherally machined and bearing seats are machined on the ends of the axle. After the stator is inserted into the rotor bore, bearings are mounted on the ends of the axle and preloaded by tightening nuts onto the axle ends and against the bearings. The bearings comprise inner rings seated directly on the axle and outer rings seated directly on the inside and end faces of the rotor.

Abstract: Plume formation by exhaust air from wet cooling towers during periods when ambient air conditions are conducive to the formation of such plumes is prevented by preheating inlet air and/or precooling influent hot water to reduce the temperature difference between the air and water and consequently the water content of exhaust air to that which can be absorbed by the ambient atmosphere thus avoiding plume formation.

Abstract: A cap and a base fit together to form the culture vessel. Adjacent the tops of the walls of the base is a rim which is "L" shaped in cross-section, consisting of a bottom leg joined to the base walls and an upright leg. Downwardly extending walls of the cap project into the space between this flange and the walls of the base. These cap walls have a plurality of spaced ribs which frictionally engage the walls of the base so that the cap will maintain a position in which it is slightly raised above the position wherein the cap is fully seated against the base. When in that raised position a length of cotton filtering material may be used between the bottoms of the cap walls and the bottom leg of the rim. The cap has an outside peripheral flange coplanar with the upright leg thereby permitting pressure sensitive tape to be applied to the two and bridging the space therebetween. Extending downwardly from the top, within the base walls and adjacent thereto, is a condensate drip flange.

Abstract: The apparatus comprises a horizontally arranged bandsaw and one or more rotary meat holders arranged to feed primal cuts of meat downwards and onto the bandsaw to be cut into portions. A depth stop, which may be adjustable, determines the thickness of the cut portion. In a preferred form, the bandsaw is substantially totally enclosed and two meat holders are provided, one of which may be loaded while meat in the other is being portioned.

Abstract: The invention relates to a device for righting and stabilizing a gyro vertical comprising: a disc arranged on the gyro housing and perpendicular to the gyro spin axis to be driven in the same sense as the gyro rotor, a cavity provided in the disc and a liquid drop movable in the cavity, the cavity being formed such that the liquid drop, with an inclination of the gyro spin axis with respect to the vertical, flows downhill into an edge portion of the cavity remote from the gyro spin axis, in which cavity it is taken along and lifted by the wall of the cavity in an angle range, thereby producing a righting torque.

Abstract: The sprayer comprises two main functioning units; namely, a flow control system incorporated in the chemical concentrate jar top closure and a spray nozzle integral with the closure for dispensing dilute solutions of fertilizer, pesticides and the like as supplied by the flow control system. The control system comprises an ejector for drawing concentrate from the reservoir jar and a pair of coaxial, independently rotatable valve elements, one, acting with fixed structure, serving to turn the water supply off or direct the water into the chemical concentrate jar or through the unit to the spray nozzle, the other, operating in conjunction with the first valve element, controlling by means of flow resistance in a labyrinth, desirably in conjunction with an orifice metering disc, proportionate feed from the jar of chemical concentrate to the main water stream. Proportionate feed may be accomplished without the flow resistance control by appropriate dimensioning of the ejector.

Abstract: The bars that abut the ends of the plates employed as heat storing elements in a basket for a regenerative heat exchanger are received in recesses in the ends of the plates. These recesses are sufficiently large so that the exterior edges of the plates are approximately planar with the outer edges of the bars. Whereby, for a basket of a given size additional plate surface is obtained in the basket and the bars will better serve to retain deteriorated plates in the basket.

Abstract: A ski having lower frictional resistance created by introduction of an air cushion. At least one chamber is formed in the running surface of the ski to hold air which is introduced through an air entrance on the ski. The sides of the chamber are formed to prevent lateral escape of the air. A channel in the form of a Venturi tube extends between the air entrance and the chamber.

Abstract: The invention relates to a photographic camera of high quality and extremely small dimensions. To this end the camera objective and the film track are provided on the front and rear faces, respectively, of a generally block-shaped central housing body. An upper housing portion extends on both sides laterally beyond the central housing body and carries, on its projecting parts, the film drive motor and a battery. A lower housing portion defines chamber members on both sides of the central housing body. These chamber members are open at the top and are interconnected by a rear wall and a bottom plate to define a space therebetween which accommodates the central housing body. The take-up and supply spools are located in the chamber members and, in turn, accommodate the film drive motor and battery, respectively, which project downwards from the upper housing portion.

Abstract: A lamp capable of underwater use comprises a rectangular acrylic body with elongate V-shaped recesses in a major surface each receiving an elongate Beta-light. An acrylic cover plate is sealed to the major surface and the body is secured to a steel backing plate with a neoprene layer between to help dissipate shock loadings. The sides of the recesses include an angle of 78.degree. to enhance reflection and may be formed by a reflective lining. The Beta-lights can be received in the grooves by shock absorbent O-rings grouped in pairs with adhesive in between. In a modification a disc-shaped Beta-light is encapsulated and received in a body formed by pour molding which is closed by a cap which is ultrasonically welded into place.

Abstract: A light-weight, portable and sturdy vibratory concrete screed which may be fabricated in modular fashion from a plurality of interconnected, separable frame units. A framework is provided, having a series of spaced, parallel unitary frame members of triangular configuration, the corners of the base of each frame member being attached to a pair of screed plates and maintaining the screed plates in spaced-apart relationship. Side braces and base braces extend between adjacent frame members for framework rigidity. An eccentric shaft is supported for rotation in bearings mounted in the frame members. The shaft may be symmetrically located in order to impart uniform vibrations to the two screed plates, or may be offset in order to self-propel the concrete screed.

Abstract: A target seeking head mounted in the dome of a missile comprises a gyro rotor including a mid-portion forming a convex calotte-shaped peripheral surface. The convex calotte-shaped peripheral surface is surrounded substantially concentrically by a concave calotte-shaped bearing surface stationary with respect to the missile. A small gap is formed between the two surfaces and pressurized gas is introduced into the gap to form a gas bearing centering the gyro in the center of curvature of the convex calotte-shaped peripheral surface thereof. A target seeking scanning device comprises an annular parabolic mirror formed at the mid-portion of the gyro and a plane mirror imaging a field of view located in infinity in the plane of a detector mounted stationary with respect to the missile.

Abstract: Plant fertilizer in granular form is supplied as replaceable cartridges and gradually dissolved within the cartridge shell by a side branch of the main stream of water which flows straight through the base of the feeder with minimum pressure loss. The cartridge container is a frustoconical disposable shell the base closure of which has a central orifice for metering inflowing water and peripheral fertilizer solution outlet holes. A port in the top of the main channel directs the side branch flow against the cartridge closure at the metering orifice to flow into the body of fertilizer and a second port receives solution from outlet apertures in the closure to rejoin the main stream at an enlarged portion of the main channel to provide suction. A dome screwed into sealed engagement on the top of the feeder encloses the cartridge.A safety valve is provided at the top of the dome to permit trapped air to escape through a central aperture.

Abstract: A keyseat wiper or reamer for enlarging keyseats which are often formed in drilling bores during well drilling operations. The wiper comprises a generally cylindrical body including a cylindrical middle guard portion which has a greater cross-sectional diameter than the greatest diameter of the cutting elements of the tool, the middle portion being free of any cutting elements. Cutting elements extend in a tapered manner from the middle portion to opposed locations toward the ends of the wiper. Because the middle guard portion does not carry cutting elements and is the largest diameter portion of the keyseat wiper, the keyseat wiper will cut only when the hole through which it is passing is of diameter smaller than that of the middle guard portion or when the well bore has a curve or dogleg.

Abstract: A target seeking device having a gyro rotor rotating about its axis with two degrees of freedom about a central point of rotation. The device includes a detector fixed with respect to the housing of the device, an optical system by which the field of view of the device is imaged in the plane of the detector, means for producing relative motion between the field of view image and the detector, a signal evaluating circuit, means for producing precession motion of the gyro rotor, and position sensors which respond to the angular position of the gyro rotor relative to the housing. A torquer is provided for receipt of scanning signals. The signals of the position sensors are applied to the torquer through a feedback loop. An evaluation circuit is provided for producing follow-up signals from the detector signals and the position sensor signals.

Abstract: A protection column is employed about a sump pump to exclude liquid and foreign matter in the sump from entering the pump interior until a time just prior to priming and activation of the pump. The column has a closed bottom portion serving as a vessel and permitting the column to float as the liquid level rises in the sump. The upper part of the column fits about the pump to act as a guide and has a series of vertical slots. The column floats until the bottom of the column strikes the bottom of the sump pump, which prevents the column from rising further. As the water level continues to rise in the sump, water enters the column through the slots, causing the column to sink to the bottom of the sump and permitting the liquid to rise to a level in the pump commensurate with the level elsewhere in the sump, thereby priming the pump.