Daze fasteners

A daze fastener system for connecting two or more structural elements wherein the structural elements and fastener parts have substantially different coefficient of thermal expansion physical property characteristics is employed in this invention. By providing frusto-conical abutting surfaces between the structural elements and fastener parts any differences in thermal expansion/contraction between the parts is translated to sliding motion and avoids deleterious thermal stresses in the connection. An essential feature for isotropic homogeneous material connections is that at least two sets of mating surfaces are required wherein each set of mating surfaces has line element extensions that pass through a common point

Correspondence Course School: Correspondence Courses in Perspective

In the following paragraphs, Lieutenant Commander Robert H. Taylor, USNR-R, whose picture appears above, dis­cusses the evolution of the League of Nations and the United Nations, summarizes the functions and powers of major U.N. organs, and analyzes U.N. peacekeeping efforts