UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA

Eyecup Goggles: Shindel, 1919
Harry F. Shindel of Reading, Pennsylvania, assigned to T. A. Willson & Co., patented this goggle eye cup in 1919, US 1,296,707. Each cup is folded from one punched blank of sheet material: a beaded outer edge rests on the face round the eye and a recessed inner edge holds the lens. The ends of the folded blank turn outwards and are held together by a sliding channel-section sheath, which also carries the head-strap connection. Ventilating holes in the cup wall let air in, while a folded, crosswise-corrugated guard strip inside keeps out dirt and side light.
Hagati
Workshop process
Amabwiriza
1
1
Punch the blank
Punch the blank
Punch the eye-cup blank from sheet material with a beaded outer edge, a shorter inner edge that forms the lens recess, and the ventilating holes.
Ibikoresho by'iyi ntambwe:
Ibati ry'icyuma1 as requiredIbikoresho bikenewe:
Ikandagira ryo gukanda ibyuma2
2
Fold and fit lens and guard
Fold and fit lens and guard
Fold the blank into a cup with its ends turned outwards. Set the lens in the recess and the corrugated guard strip inside the wall over the holes.
Ibikoresho by'iyi ntambwe:
Lentiye y'amadarubindi yo kwirinda1 igice
Agace k'imiraba karinda imyobo y'umwuka1 igiceIbikoresho bikenewe:
Ifashi rikora byinshi3
3
Clamp
Clamp
Slide the clamping sheath onto the turned-out ends from its outer end until its stop meets them; its tapered flanges wedge the ends together and lock lens and guard in place.
Ibikoresho by'iyi ntambwe:
Igifuniko gifata igikombe cy'ijisho1 igice4
4
Pair and strap
Pair and strap
Two such cups, with the head strap fastened to the head-band connections on their sheaths, make the goggles.
Ibikoresho by'iyi ntambwe:
Umukandara w'umutwe w'amadarubindi yo kwirinda1 igiceIbikoresho
5- 1 as requiredUmwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Ibikoresho bikenewe
2- Umwanya
Iki gishushanyo gikora
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