Muanyagipari Kutato Intezet

Robert Tihanyi

Gyorgy Virag

Geza Kecskemethy

Zoltan Czirmai

Method and apparatus for dispensing material from a hand-held gun connected by a flexible conduit to a source of the material under pressure. The control of material flow is effected by a valve in series between the flexible conduit and the source of material, and hence remote from the gun, thereby to reduce the weight of the gun and to provide a gun that has no moving parts for controlling material flow. One or more orifices is provided in the handle of the gun for the continuous discharge of low pressure control air that actuates the valve or valves; and the selective opening or closing of the orifice or orifices by the hand or fingers of the operator, thus controls the valve or valves and hence the flow of material for materials to the gun. The invention is particularly useful for dispensing synthetic resins, which may require the provision of separate streams of resin, catalyst or hardening the resin, compressed air for atomizing the resin-catalyst mixture, chopped glass fiber, compressed air for actuating the glass fiber chopper, and solvent for flushing the mixing chamber of the gun.

Dispenser having manually operated air controlled valves

In a batcher plant at least one pair of reciprocable pressure cylinders are provided one of which as a first pressure cylinder is connected to a source of pressure medium while the other one as a further pressure cylinder is supplied with pressure medium in dependence on the number of strokes per minute of the first pressure cylinder. Both pressure cylinders drive delivery pumps. The total amount of delivered material is controlled by the speed and the number of cycles of the piston of the first pressure cylinder while the mutual proportions of delivered material are controlled by varying the length of stroke of the further pressure cylinder. Thus, on the one hand, mutual proportions of delivered substances can be finely adjusted within very wide limits and, on the other hand, the pressure cylinders of the various batcher units may be located in considerable distances from one another so that the plant is suitable to perform the most various functions.

Growing community of inventors

Budapest, Hungary

Robert Tihanyi