ES248180A1 - Improvements introduced in the dosing appliances (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improvements introduced in the dosing apparatuses, characterized by combining the conventional apparatus suitable for dosing a first liquid, such as gasoline, with an additive essentially comprising, and at least, an additional and displaceable dosing piston that moves in a cavity or cylinder additional that is in communication, through the corresponding valves, with the suction and delivery pipes of a second liquid to be dosed identical or advantageously different such as oil, with respect to the first liquid that is dosed in the conventional apparatus, with the particularity that said additional piston has in one of its two alternative directions of displacement, a forward stroke, whose path is free, said stroke being limited by an adjustable position stop means, at will, from the outside, while in the direction opposite of its displacement, corresponding to the return of the plunger, the latter saw it is actuated by a moving drag member controlled by the mechanism of the conventional apparatus, so that this driving part is able to slide relatively with respect to the additional piston during the direct flow path of this piston, so that a part, the said piston is subjected, during its free flow to the pressure of the liquid initially dosed in the conventional apparatus, whose pressure determines this path until the additional piston reaches the position defined by the position given to the stop means mentioned above, while, when starting the pulling part its reverse travel corresponding to the progress of the conventional dosing device, produces the reverse drag of the additional metering piston, with the consequent proportional suction of the second liquid to be dosed in correspondence with the first. (Machine-translation by Google Translate, not legally binding)