To avoid assigning duplicate hood linings to colleges and universities that used the same school colors, the Intercollegiate Bureau of Academic Costume (IBAC) used different types of heraldic patterns to divide the two or more colors in an academic hood. One of the heraldic divisions the Bureau employed was a “double chevron”. The typical width of a normal chevron was between three and four inches, but the double chevron pattern used two chevrons of about 1½ inches in width placed approximately two inches apart so that the color of the hood lining showed between them.

The IBAC assigned Trinity Seminary and Bible College a hood lining that was royal blue with two white chevrons in the late 1940s or 1950s. Lists compiled by Kevin Sheard in Academic Heraldry in America (1962) and Academic Dress and Insignia of the World (1970), as well as an Intercollegiate Bureau list from 1972 all described Trinity’s hood lining as royal blue with two white chevrons.