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.

مبتدئ

1 hour

التعليمات

Headband and visor

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

المواد لهذه الخطوة:

عصابة رأس قابلة للضبط1 قطعة

حاجب مفصلي1 قطعة

الأدوات المطلوبة:

طقم مفكات

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.

المواد لهذه الخطوة:

لوح واقٍ شفاف1 قطعة

شريط تحويف الحواف1 as required

الأدوات المطلوبة:

سكين قصّ

خرّامة ورق

زرّادية عادية

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.)

المواد لهذه الخطوة: