Bob Tattersfield took over the business of his lifelong friend Tom Thickstun, and continued to develop, build, and showcase performance car parts, often times with his parts showcase wagon in tow.

Tom Thickstun's untimely death was in 1946 at age 34.  Tatterfield evolved the Thickstun’s PM-7 manifold and continued on plans to build superchargers.

http://www.worldofspeed.org/archive-blog-1/2018/1/11/tattersfield