Face Shield with a Replaceable Window: Flood, 1946

A face shield is a transparent window hung in front of the face from a headband. Shields get pitted and worn and must be replaced, and if the fastenings are fixed to the shield they are thrown away with it. Oscar S. Flood of Chicago patented a remedy in 1946, US 2,406,598: punch a row of holes along the shield's top edge and fasten it to the visor with snap fasteners, or with a spring-steel strip whose tongues pass through the visor. A worn shield is unsnapped and a new one put in, and all the hardware stays on the visor.

초급

1 hour

안내

Headband and visor

Pivot the visor to the sides of an adjustable headband so it can be swung up or down.

이 단계의 재료:

조절식 헤드밴드1 개

회전식 바이저1 개

필요한 도구:

드라이버 세트

Shield

Cut the transparent shield, punch a row of holes along its top edge spaced to match the fasteners on the visor, and bind the bottom and side edges with metal or fabric.

이 단계의 재료:

투명 실드 판1 개

테두리 띠1 as required

필요한 도구:

커터칼

펀치(종이 구멍 뚫개)

펜치(콤비네이션 플라이어)

Fasten

Fix the female parts of the snap fasteners to the visor. Push each male part through a holding strip inside the visor and through a hole in the shield, and snap it home. (Alternatively, punch inward projections in the visor and lock the shield with a spring-steel strip whose tapered tongues pass through the visor.)

이 단계의 재료: