Patent for a new and improved knee pad. This design consists in "the combination of a body or main portion, padding contained therein, a re-enforcing piece secured to the said main portion, and a spring interposed and bearing between said main portion and re-enforcing piece . . . [a] cap-piece for knee-protectors slitted from its opposite edges . . . forming flaps, combined with connections for securing said flaps to the body of the cap-piece" (lines 72-81).