The two 'legs' of each trestle connected to the back of the body, which meant the pair of trestles provided four curved, solid vertical posts that joined the top to the back. Now, it began to add a 'trestle,' a sort of wide bridge-shape wooden section, to each of the rails.
The company was already gluing to the underneath of hollowbody tops a parallel pair of wooden rails to secure the pickups.
Gretsch followed his advice and installed what it called truss bracing, which has since become better known as trestle bracing.
