Bragg-Kliesrath Corporation v. Farrell

MACK, Circuit Judge.

In the operation of internal combustion automobile engines, the engine pistons suck into the cylinders successive charges of -an. explosive, mixture -.'of- air and-liquid fuel-delivered through a *847carburetor to tbe intake manifold under tbe control of a throttle valve. When the engine is running at maximum speed the throttle valve is practically wide open, the mixture passing to the engine cylinders is at approximately normal atmospheric pressure, and no appreciable rarifieation or vacuum exists in the manifold. As the throttle valve is closed, the suction passage through…