U.S. Patent Specifications

A cooling construction for internal combustion engine cylinders comprising in combination, an engine cylinder, spine cooling members thermally integral with the wall thereof and projecting gcnerally radially outward therefrom, a heat conducting jacket surrounding said cylinder and spines, said jacket being thermally united to said spines, and an inlet member having an opening at one side thereof and attached to and surrounding said cylinder and jacket at one end thereof for admitting air to the space within said jacket uniformly distributing said air circumferentially of said cylinder, whereby said cooling air may pass axially through said jacket and about said spines.