Lead filter for internal combustion engine exhaust gases

Automobile type lead filter, comprising in combination

• an elongated housing having an oval cross section shape and containing a mass of alumina coated steel wool centrally located therein,
• a pair of open mesh supports extending transversely across the interior of said housing at the ends of said mass for holding it in place,
• angle means centrally located longitudinally for stiffening said housing to maintain said oval cross section,
• an inlet pipe located at one end of said housing with the axis thereof offset from the longitudinal axis of the housing,
• an outlet pipe located at the other end of said housing with the axis thereof aligned with the longitudinal axis of the housing,
• a pair of impervious baffles integrally attached to said mesh supports and each being aligned with one of said inlet and outlet pipes,
• said baffles being spaced from the inside ends of said pipes to minimize pressure drops thereat,
• impervious material end walls on said housing forming a pair of plenums one at each end of said housing between said mesh supports and the end walls,
• said inlet and outlet pipes extending through said end walls of the housing, and
• means adjacent to the inside ends of said pipes for supporting the inner ends relative to the walls of said housing.