Abstract: A hydrodynamic coupling for driving pumps, fans, and the like at variable shaft speeds includes coaxial primary and secondary impellers. The space defined within these impellers contains variable quantities of working fluid for transmitting the shaft torque from one impeller to the other. One of the impellers is equipped with a co-rotating casing, which encloses the other impeller and may serve to force working fluid into the working chamber. The fluid exits from the working chamber through an aperture in the higher-lying impeller and returns to a storage chamber from which a conduit transports it to the casing. A control valve in the conduit permits external flow control.

Abstract: A fuel injection system includes a metering valve assembly whose control slide is actuated by the air flow through the induction tube and by an opposite restoring force provided by fluid pressure. The magnitude of this restoring force may be altered by the action of a pressure control valve. The back pressure downstream of this control valve and downstream of a main fuel system control valve is regulated by a back pressure regulating valve. This valve is responsive to signals related to the atmospheric pressure or to operating parameters of the engine, e.g., the induction manifold pressure and it regulates the back pressure of the fuel to maintain a desired fuel-air ratio.

Abstract: A thread breakage repair apparatus for use in open-end spinning machines includes a fixture which holds the thread and trims its broken end and it also includes a movable assembly, on which a drawoff tube is mounted which is connected to a source of suction. This drawoff tube is brought close to the end of the thread held by the clamping and severing fixture, whereupon a controller releases the clamped thread which is then aspirated into the interior of the drawoff tube. The mechanical transport mechanism for the thread may be reversed in motion by the controller, permitting already spun thread to be backspaced so that the end of the thread may be reattached to the fibers located in the spinning rotor. The drawoff tube may also be of the telescoping type whose extension is determined by the controller.

Abstract: In each fuel injection valve forming part of a fuel injection apparatus and associated with an internal combustion engine, there is disposed an electric heater which transmits heat to the fuel by contact-type heat exchange. The heat output of each heater is controlled by a device which processes input signals representing different engine variables.

Abstract: A diaphragm valve which may serve as an equal pressure valve or as a pressure equalizing valve of a fuel metering and distributing unit for an externally ignited internal combustion engine. The valve has a flexible diaphragm having a clamped diameter and to which a valve plate is connected. The valve plate operatively cooperates with a valve seat of the valve and has a diameter which is as large as possible in relation to the clamped diameter of the diaphragm. The valve also includes a stationary thrust plate which is concentrically disposed relative to the valve seat, which defines a knife-shaped edge which lies in a common plane with the valve seat and which operatively cooperates with the valve plate. The knife-shaped edge has a diameter which is as large as possible in relation to the diameter of the valve plate.

Abstract: A food preparation appliance with two hinged parts, usable as a waffle iron and also as a meat grilling utensil. The two movable parts contain heating rods over which are slipped hollow contact members. Each of these contact members has two different surface patterns, each surface pattern being designed for the specific type of food preparation, i.e., either baking or grilling. The contact members may be removed and turned over so that matching surface patterns face one another.

Abstract: A method for open-end spinning according to which discrete fibers are fed into the interior of a rotor located in a spinning chamber and deposited in a fiber groove of the rotor. The fibers are thereafter drawn out of the spinning chamber as twisted fibers formed into a thread. The air which flows into the interior of the rotor is evacuated from the spinning chamber by suction.The apparatus of the invention is arranged so that the spinning chamber has at least one air outlet opening through which air flowing into the interior of the rotor leaves the spinning chamber. The outlet is located in the cover portion of a housing and is connected to an air suction device by at least one air channel.

Abstract: A fuel injection system utilized with an engine having pre-combustion chambers, main combustion chambers, a fuel metering and quantity distribution valve, a suction tube and an air measuring member are described in further detail hereinafter. The fuel metering and quantity distribution valve has a control slide member which is controlled in its displacement by the air measuring member. The control slide member controls the fuel metered to the engine. The fuel metering and quantity distribution valve has a first differential pressure valve associated therewith which maintains the pressure difference between the fuel pressure prevailing upstream and downstream of the fuel metering location constant during injection. Structure is provided to change the pressure difference in dependence on engine parameters.

Abstract: A fuel injection system for externally ignited internal combustion engines in which fuel is individually metered to each injection valve through mutually displaceable metering valves. A diaphragm-type pressure valve is disposed between each metering valve and each injection valve. One of these valves is a differential pressure valve, which maintains a constant pressure difference across the metering valve to which it is connected. The remainder of these diaphragm valves are pressure equalizing valves, controlled by the output pressure of the differential pressure valve to maintain the same constant pressure difference across each of the remaining metering valves. The injection valve supplied with fuel by the differential pressure valve, opens at a higher fuel pressure than the remaining injection valves, thus also serving as a pressure valve.

Abstract: A tire truing machine having a carrier for supporting and moving a motor-driven cutter to and from a mounted and driven wheel having a tire with means to vary the travel of the cutter according to the desired contour of the tire, including a new and improved cutter head having means for mounting the cutter blade onto the motor drive shaft so that the distance between the cutter blade and the housing may be closely controlled to prevent dirt and rubber from entering the motor housing and further having a new and improved means for both automatic and manual sharpening of the cutter blade, and more importantly, for preventing rubber from being drawn between the carbides and the blade to prevent binding of the machine.

Abstract: The invention relates to a relatively small, compact, easily disassemblable, hydroponic unit which comprises superposed telescopic trays one of which is provided with a free flowing liquid that may be transported by a pump positioned in the lower tray to an upper aggregate supporting tray by a suitable conduit whereupon it may thoroughly moisten the extent of the aggregate and flow back to the lower tray. The structure further includes suitable timer means for controlling nutrient flow as well as facilitating removal of the pump from the lower tray without disturbing the aggregate.

Abstract: A method for the automatic repair of thread breakage in spinning machines includes the steps of searching for an end of a broken thread on a take-up thread holder. The method involves grasping the end of the thread, if found, pulling the thus grasped thread into a traveler and a thread guide and combining the thus pulled thread with roving emerging from delivery rollers. In the method it is determined if repair of thread breakage is not possible by the series of steps set out above, and then an auxiliary thread is supplied from an auxiliary thread supply and fastened on the thread holder. Subsequently, the auxiliary thread is detached from its supply thereby providing a new thread end on the thread holder, and thereafter the searching, grasping, pulling and combining steps of the method are performed. An apparatus is provided for carrying out the method.

Abstract: A gluing press for shoes or other similarly shaped workpieces having a pressure-medium operated pressure cushion whose highly resilient diaphragm fixes the sole to be attached during the gluing operation on the shoe upper placed on a last and retained in a shoe-receiving device, a feed movement taking place between the pressure cushion and the shoe-receiving device before the gluing operation. A switch is disposed on the shoe-receiving device the switch being constrainedly operated by the introduction of the upper shoe and switches on the drive for the closure movement of the operative parts of the gluing press formed on the pressure cushion and the shoe-receiving device. A safety device is connected to one of the operative parts of the gluing press which, when deflected by an obstacle in the path of movement of the movable part of the gluing press, switches off or reverses the drive.

Abstract: A telescopic crane for stores, in particular for cargo holds, designed for transportation and storage of loads placed in stacks or on racks, which consists of a two-girder bridge with the crane movably mounted thereon, and includes a crab with a rotary platform and a telescopic column with a clamp. The telescopic column has a mobile set of members slidable below or above a fixed member. The fixed member is slidably connected with the rotary platform in order that the fixed member may be lowered together with the other members to a level permitting the turning of the platform.The end member of the column has a fork and a movable member forming a clamp, which is slidable along the end member by means of a tie system of guiding, which consists of a winch connected with the fixed member and of lifting and lowering ties wound through all members of the column.In the case of an even number of members, during the movement of these members, the winch is coupled with a driving element for these members.

Abstract: In a fuel injection system for an internal combustion engine, a fuel metering valve is controlled by an air sensing element disposed in the air intake tube for metering fuel quantities proportionate to the intake air quantities, and by an electromagnetic valve and an associated control structure which varies the air-fuel ratio by changing the pressure difference across the fuel metering valve, as a function of engine temperature during warmup, then as a function of, for example, the oxygen content in the engine exhaust gases.

Abstract: A fuel injection system for externally ignited internal combustion engines in which a fuel metering and distributing valve is controlled by an air sensing element disposed in the air suction tube of the engine and by structure which is adapted to alter the restoring force exerted on the air sensing element through the fuel metering and distributing valve. The noted structure includes a control pressure conduit, an uncoupling throttle disposed between a fuel supply conduit and the control pressure conduit, at least one electromagnetic valve disposed in the control pressure conduit for varying pressure in the control pressure conduit in dependence on at least one operating parameters of the engine, at least one pressure regulating valve also serving to vary the pressure in the control pressure conduit, and a storage element for hydraulic integration during pressure changes in the control pressure conduit.

Abstract: A low profile air jack for lifting vehicles is described, in which the force exerted by a horizontally disposed air cylinder and piston assembly on the lever arm of a lifting member pivoted to the jack frame causes the lifting member to rotate, so that its front end engages and lifts the vehicle. The piston shaft of the air cylinder is connected to the lever arm of the lifting member by a flexible chain and sprocket assembly which acts as a force-multiplying mechanism so that the force acting on the lever arm of the lifting member is approximately double the force which would be exerted if the piston shaft were directly connected to the lever arm by a rigid member. The two flexible chains are connected to a stabilizing bar, which is pivotably attached to the jack frame for both vertical and horizontal movement thereto, rather than directly to the frame, so that equal forces are applied to both chains during the lifting operation.

Abstract: What follows is a description of an improved photochemical reactor which includes a reaction vessel, a UV-radiation source, and a structure defining an intermediate space between the reaction vessel and the radiation source. The reaction vessel is transparent to radiation and receives the substances to be irradiated. Within the intermediate space a luminescent material is disposed which transforms the UV-light of the radiation souce into a specific wavelength characteristic of the luminescent material and which effects the photochemical reactions of the substances within the reaction vessel.

Abstract: An automatic closure device for use in combination with a pressurized container which has a liquid or pasty filling dischargeable as a foam, as well as a propellant, and comprises a valve spring-biassed into the closed position is described, which closure device comprises an actuator head having a discharge orifice, a discharge duct in the actuator head which duct connects the discharge orifice with an entry port, remote from the orifice, in the actuator head and serving for connecting the latter to an outlet opening of the container controlled by the aforesaid valve, the discharge duct and orifice being surrounded by an integral wall consisting, at the discharge orifice and the wall portion adjacent the latter, of two wall zones the contact edges of which at the discharge orifice are of equal length and abut each other in closed position while, in open position, these contact edges merge with each other under an acute angle, one of these wall zones being elastically flexible and the other rigid; and a beak-s

Abstract: A clock or watch movement has a spindle assembly which includes an escape wheel, a pinion and a common spindle. The escape wheel is driven by a balance wheel and a driven wheel of the movement meshes with the pinion. The ends of the spindle are journalled in bearings which are adapted to permit relative movement of the spindle assembly radially of the axis of rotation of the driven wheel of the movement. A biasing spring urges the spindle assembly in the direction towards said axis.