Before revision: Construction A cross-sectional view of a stud type cam follower The modern stud type follower was invented and patented in 1937 by Thomas L. Robinson of the McGill Manufacturing Company.
After revision: Construction A cross-sectional view of a stud type cam @Qbm5_]File:Cam follower-stud style.png| The modern stud type follower was invented and patented in 1937 by Thomas L. Robinson of the McGill Manufacturing Company.