Internal-combustion engines irrespective of cycle or mode of operation, comprising a stationary inclosing casing, sections of which perpendicular to its axis are bounded by circular arcs concentric to said axis, and a movable member or piston therein moving in contact with the inner walls of the said casing, said piston partaking of an oscillating or swinging motion about the axis of the casing and, together with the walls thereof, inclosing a space or chamber within which the burned gases act expansively to impel the piston.
SEE OR SEARCH CLASS
91, Motors: Expansible Chamber Type,
223, and 339+ for cyclically operable expansible chamber motors of the oscillating piston type.
