Abstract: A fuel injection nozzle having an outwardly opening valve needle to which a piston is connected and on which a cap is mounted. The cap encloses a damping chamber, which communicates in a throttled manner, via the play between the piston and the cap, with the flow course of the fuel. Oriented toward the cap is a blocking shoulder attached to the housing, which shoulder restrains the cap, after an undamped pre-stroke (h.sub.v), relative to the valve needle, which continues to move, its continued movement being damped thereby. A spring acts via a spacer body upon the cap, the spacer body keeping the cap at a distance from the blocking shoulder corresponding to the pre-stroke (h.sub.v) in the closing position of the valve needle. As a result, the prescribed set-point value of the pre-stroke (h.sub.v) can be adhered to very precisely.

Abstract: A collapsible fire fighting bucket to be suspended from an aircraft and to be filled from an open body of water. The bucket has two means for adjusting the capacity thereof to accomodate load carrying capacity of the aircraft. One means includes sidewall stiffening means in the bucket sidewall which bulge outwardly under load. The second means includes an adjusting means around the side wall for adjustably restricting the circumference thereof and thereby reducing the capacity of the bucket. A bucket assembly comprising a main bucket and a booster bucket is used for filling from shallow water. The booster bucket empties into the main bucket on lifting to give the main bucket a better fill.

Abstract: A retrofit mechanism for automatic lawn sprinkler systems. An electrical latching switch which when successively energized switches energizing power to one of two or more conductive paths is housed in a waterproof casing. The retrofit mechanism is installed near an existing electrically operated control valve in an automatic lawn sprinkler control system. The latching switch is wired to the system controller by the wire originally connected to the existing valve. The existing valve and one or more new valves are connected to the conductive paths of the retrofit mechanism. Thus, new valves are added to the automatic sprinkler system without running wiring and conduit between the new valves and the existing controller.

Abstract: A dry pipe valve accelerator is operative for quickening the operation of a dry pipe valve in a dry sprinkler system in order to hasten the delivery of water throughout the system in response to the operation of one or more sprinkler heads of the system. The accelerator is automatically actuated in response to a slight but significant rate of decay in system gas pressure, such as is caused by the operation of a sprinkler head of the system; and when the accelerator is actuated, an exhaust valve element thereof is moved from a closed position to an open position wherein the accelerator provides an interconnection between the pressurized portion of the system and the intermediate chamber of the dry pipe valve to effect the opening of the latter.

Abstract: A spray nozzle for combating fires that includes a housing having a flat end face and a contoured chamber passing upwardly through the end face. A plate is supported adjacent to the end face to provide a circular spray opening therebetween. A fire extinguishing fluid is pumped through a rigid pipe from a high pressure supply into the chamber where the fluid is expanded into a vortex before being projected through the spray opening in a 360.degree. pattern. The pipe enables the nozzle to be inserted into the fire region by a firefighter situated at a remote and relatively safer location.

Abstract: A plurality of pilot operated coolant control valves are mounted in manifolds which in turn are positioned adjacent the work and backup rolls of a rolling mill and used to supply coolant to said rolls in desirable spray patterns covering the surfaces of the rolls and operable only when the rolling mill is functioning normally.

Abstract: A long range sprinkler with controlled application rate comprises a plunger which is cyclically reciprocated by a drive to restrict and enlarge the nozzle throat, such as to enable a larger size nozzle to be used for obtaining a larger range, while the discharge rate is restricted by cyclically reciprocating the plunger to restrict the nozzle.

Abstract: A method and apparatus for effecting washing, bleaching, or thickening, etcetera of paper pulp or the like utilizes stationary screens, yet provides efficient treatment without significant screen clogging. Pulp introduced into the bottom of a cylindrical upright vessel is caused to flow in particular radial segments and channels. Introduction of pulp into all channels of a particular radial segment, extraction of withdrawn liquid from the radial segments, removal of treated pulp from the top of the vessel, and the introduction of treating liquid between the stationary screens, are coordinated so that uniform treatment of the upwardly flowing pulp results.

Abstract: A pneumatic spreader for the distribution of materials and a flow distributor for same are disclosed. The spreader includes a distribution chamber having multiple compartments with a gas inlet and material outlet defining a venturi in each of the compartments. The materials are discharged from the distribution chamber and its compartments through first conduits coupled to the respective material outlets and a plurality of second conduits communicating with each of the first conduits for receiving the materials and discharging them to the ground. A flow distributor adjacent the juncture of the first and second conduits equally divides the materials in the first conduit between the second conduits. The flow distributor includes a substantially circular plate having a plurality of openings which communicate to the second conduits and a substantially conical deflector which is adjustable both linearly and is eccentrically rotatable for adjusting the flow between the plate openings.

Abstract: Apparatus for attachment to an automated robot or other similar type of automatic machinery, for controlling paint spraying nozzles to provide additional degrees of freedom of spray direction and film coating, including a rack and pinion gearing housing attachable to the robot, one or more air cylinders mechanically linked to the rack and pinion gearing, a shaft rotatably coupled to the pinion gear and fixedly attached to one or more spray nozzles. Air activation of the air cylinders causes the pinion gearing mechanism to pivotally rotate about the shaft axis, rotatably positioning the spray nozzles in various preselected angular positions.

Abstract: There is described a carbon bed absorber (7) including a temperature sensor (10), e.g. a conduit (10) which fuses at a predetermined temperature, wherein the sensor (10) is operably linked (11, 15) to a supply of fire extinguishing fluid (14) to cause flow of the fluid to the bed (7) on the sensor (10) sensing a predetermined elevated temperature. In a preferred embodiment, the temperature sensor is an optical fibre (10) which fuses at the predetermined temperature.

Abstract: A sprinkler comprising a spray nozzle adapted to be connected to a water supply pipe and having an axially extending jet outlet opposite which a flow distributor head is mounted coaxial with and rotatable relative to the nozzle, the distributor head having limited vertical movement and being provided with a flow divider in its central region facing the spray nozzle from which flow divider at least two outflow passages extend outwardly, a deflector wall at an angle to each outflow passage being provided at the exit of each of the outflow passages, the wall, when the flow impinges thereon, causing the rotation of the head, the flow divider includes a part on both sides of an imaginary plane which divides and is parallel to those parts of the outflow passages which lie in the region of the axis of the distributor head, the part of the divider on each side of the plane being more remote from the deflector wall of one outflow passage at the exit than the axis of the head and being oriented to force the flow toward

Abstract: A trigger-type sprayer according to the present invention sucks up, pressurizes and sprays a liquid contained in a container having a mouth portion. The sprayer is provided with a housing attached to the mouth portion of the container, a trigger rockably attached to one end portion of the housing, a nozzle formed on the trigger and having an orifice, a cylinder supported at the middle portion on the housing and capable of facing the orifice, a suction tube attached to the other end portion of the cylinder and connecting the interior of the cylinder and that of the container, a piston one end of which is connected to the nozzle and the other end of which is located in the cylinder, the piston slidably touching the inner surface of the cylinder, a primary valve for selectively connecting the suction tube and the cylinder, and a secondary valve for selectively connecting the cylinder and the piston. The housing, trigger, nozzle, cylinder and suction tube are integrally formed.

Abstract: The spray valve comprises a cylindrical component having a central passage, which body is slidingly disposed in a widened portion of the valve body. The cross-sectional area of the central passage is smaller than that of the widened portion, so that the cylindrical component is displaced outwardly against the return force of a spring by the flow occuring when the spray valve is opened. A permanent magnet is embedded in the wall of the cylindrical component. In the wall of the valve body surrounding the widened portion thereof there is a blind bore in which a reed contact is inserted. Through the flow of liquid occuring when the spray valve is opened, the magnet is displaced into the field of response of the reed contact, which thus indicates the opening of the spray valve. This spray valve is intended to be utilized in a system for spraying a thawing agent. A plurality of control circuits are disposed along a roadway, one of the spray valves being associated with each control circuit.

Abstract: A novel ionic surface preparation for nozzles used in spraying fluid droplets such as used in ink jet printers is disclosed. In conjunction with an oppositely charged ionic anti-wetting agent dissolved in the sprayed fluid, the new surface preparation reliably reduces the wetting of the nozzle surfaces, thereby facilitating the production of more uniform and predictable droplets.

Abstract: A foam generating nozzle is provided for converting a liquid containing a gas maintained under pressure in solution in the liquid, to a foam for application to a substrate. Complete foaming of the solution is accomplished prior to discharge from the nozzle. This assures in some applications complete atomization before contact with the substance to be coated.

Abstract: A fuel injection valve has a collar-shaped stopper at the front of a plunger for restricting the plunger stroke between the stopper and the end of a guide pipe. The divergent conical surface or spherical surface is formed at the end of the guide pipe, a spherical surface which makes contact with the conical surface is formed at the opposite side of the stopper of the plunger to the ball, an automatic centering operation is performed at the stroke end of the plunger, thereby preventing the irregular wear of the ball valve and the seat surface to stabilize the performance for a long period of time.

Abstract: A heat activated device having a plurality of fusible elements for mounting in an aperture of a pressure fluid line which holds inactive safety fire control system which is actuated by loss of pressure in the pressure fluid line. The melting of any or all of the fusible elements at a preselected rise in temperature vents fluid pressure from the mounting aperture.

Abstract: A guard apparatus is provided for a rotatable, side discharge material distribution spinner having a given circumference and height and a predetermined lateral discharge area. The guard apparatus comprises an upper guard ring and a lower guard ring each defining an outer periphery at least as great as the circumference of the spinner. Coupling brackets are provided for coupling the upper and lower guard rings together in assembled condition in substantially parallel planes and spaced apart by an amount at least as great as the given height of the spinner. A mounting arrangement is provided for mounting the assembled guard rings respectively above and below the spinner so as to respectively overlie the outer circumference thereof while leaving the lateral discharge area thereof unobstructed.

Abstract: A system is disclosed for moving a load from an equilibrium position to which it is urged by extraneous forces, with reduced power required of the motive system. In the system, a load is engaged by means storing potential energy when the load is in its equilibrium position and returning the potential energy to the load as it is moved from the equilibrium position. Such a nozzle-actuating system includes generally a frame, an electric motor drive, and a member, driven by the electric motor drive, that is movably carried by the frame and connected with the rocket nozzle. The frame and driven member can include a cam and spring arrangement to provide a force counteracting the force imposed on the driven member by the rocket nozzle when it is displaced from its normal position by the electric motor drive.