Joints between cylinders of different materials

A connection between the ends of two coaxial cylindrical members having substantially different thermal coefficients of expansion, one cylindrical member having a first radial annular flange projecting therefrom, said first radial annular flange being spaced a short distance from its end providing a short cylindrical end extension, said second cylindrical member having a second radial annular flange projecting therefrom in the same radial direction, said second cylindrical member having said second radial annular flange located at the end of the second cylindrical member, said end of said cylindrical member having said second radial annular flange extending around and being radially spaced from said short cylindrical extension with the second radial annular flange abutting said first radial annular flange, said circumference of one of said radial annular flanges having radial projections, a torque and spacer means connected to said other radial annular flange adjacent the circumference of said one of said radial annular flanges and having contact with said radial projections to prevent a rotating movement of one of said cylindrical members with respect to the other cylindrical member, an axial load means connected to said other radial annular flange through said torque and spacer means to prevent axial flange separation between said first radial annular flange and said second radial annular flange and permit thermal growth therebetween, an annular resilient strain pad positioned between said short cylindrical extension and said other cylindrical member radially spaced therefrom to absorb radial growth and maintain said two cylindrical members concentric.