Welding hood with periscopic view piece

摘要

A welding hood is provided with a periscopic view piece to provide an elevated effective line of sight for viewing over and around objects during welding operations. The welding hood includes a face mask and a head band or other support which supports and positions the mask on the welder's head. A view piece includes an objective window which is normally tinted or filtered to protect the welder's eyes from brilliant light, a first mirror behind the objective window, and a second, lower mirror oriented to reflect the image passing through the objective window and reflected by the first mirror to the second mirror along the welder's unaided line of sight. The first mirror may be tiltably mounted to increase the field of view, and the objective window and the first mirror may be mounted on a housing coupled to the remainder of the mask by an extensible member such as a bellows to permit the welder to adjust the displacement between the first mirror and the second mirror and thus the displacement between the effective line of sight and his unaided line of sight.