Book 3 — Opening Springs for a Tennis-Racket Clamp
Reading edition
When putting a tennis racket in a press, it is difficult to keep the press open to let the racket slip in. This can be easily remedied by simply putting a small coil spring around each of the four bolts, as shown. This will always open the press when the bolts are loosened.—Contributed by W. X. Brodnax, Jr., Bethlehem, Pa.