U.S. Patent Specifications

Abstract

An exhaust device for internal combustion engines, comprising in combination a toroidal manifold which is transversely of substantially round cross section, a plurality of flared mouth pipes opening individually from said cylinders in a common direction substantially parallel to the toroidal axis and connecting upon the exterior of the manifold tangentially into the interior of said manifold, an engine cowling, and a plurality of flared mouth outlet pipes opening tangentially from the interior of said manifold and tangentially to the engine cowling in a common direction substantially parallel to said axis into the open air.

Citation

(1942), "U.S. Patent Specifications", Aircraft Engineering and Aerospace Technology, Vol. 14 No. 11, pp. 333-334. https://doi.org/10.1108/eb030969