Lab Safety Goggles: Cover-All Body with Baffled Side Vents and a Snap-In Lens (Bausch & Lomb, US 2,715,223, 1955)

Cover-all goggles in two moulded plastic parts: a one-piece body that wraps the eyes and nose, and a flat clear lens panel sprung into a curve across its front. A raised rib round the front hides the lens edge so no particles can get in. The vents sit in set-back panels at the sides, and baffles inside turn the incoming air away from the eyes. Result: ventilated goggles that keep out flying particles and splash, with a lens that snaps out for replacement. Source: R. F. E. Stegeman and F. G. Gay (Bausch & Lomb), US 2,715,223 (1955). Unknown: sizes, the moulding and the strap. Picture: the patent drawing.