Samvinna
LIST
FEGURÐ OG VELLÍÐAN
HANDVERK
MENNING OG SAGA
SKEMMTUN
UMHVERFI
MATUR OG DRYKKUR
ÖFUGVERKFRÆÐI
VÍSINDI
ÍÞRÓTTIR
TÆKNI
KLÆÐANLEG TÆKNI
Safety Goggles: Soft Plastic Frame with Turnable Splash-Proof Vent Caps (Hirschmann, US 3,141,172, 1964)
Goggles that let air in but keep splashes out. A soft polyethylene frame seals on the face and holds one clear lens for both eyes. Four vents sit in the frame, each a short tube under a cup-shaped cap with holes on one side only. You turn each cap so its solid side faces the splash; air takes a winding path in, and any liquid that gets into a cap drains out of a hole at the bottom.
Result: ventilated safety goggles against liquids, chips and particles, with a lens you can replace.
Source: J. B. Hirschmann, US 3,141,172 (1964), with the frame and lens of his US 2,773,260 (1956). Unknown: sizes, the moulding, the strap. Picture: the patent drawing.
Miðlungs
Unknown
Leiðbeiningar
1
1
Mould the frame
Mould the frame
Mould a one-piece goggle frame of a soft, light-transmitting plastic such as polyethylene. Give it a front rim with one opening for both eyes, narrower above the nose, and a nose pad moulded with the rim. Behind the rim, a wall runs back and ends in a flange that fits the face. Form a flange on the front of the rim to seat the lens, and short shoulders with sloping backs round the inside of the rim. Put a strap loop near the back edge on each side: a soft frame strapped at the front would be squeezed out of shape. Ours: LDPE. Not given: sizes, how it is moulded.
Efni fyrir þetta skref:
LDPE-korn1 frameNauðsynleg verkfæri:
Óþekkt mál2
2
Make the lens
Make the lens
Cut one lens from clear, flexible plastic such as cellulose acetate, shaped to match the rim, and pre-curve it to the shape it takes in the frame. Fit male snap fasteners (the 'Dot' type) to its edge strip above and below the nose part, and matching female ones in the rim flange. Not given: the thickness.
Efni fyrir þetta skref:
Glær plastplata1 lens
Smellusett (fyrir mikið álag)1 2 pairsNauðsynleg verkfæri:
SkæriÓþekkt mál3
3
Make the four vents
Make the four vents
Mould each vent in two parts, of plastic or metal. The base is a short tube with a flange round its inner end; the cap is a cup that screws onto the tube (a press fit or solvent seal also serves), with a closed end and an outer flange. Through the cap's side, between the tube's end and the frame, make about three holes covering half the way round, and leave the other half solid. Not given: sizes.
Efni fyrir þetta skref:
Óþekktur efniviður4 vent bases and capsNauðsynleg verkfæri:
Óþekkt mál4
4
Assemble and set the caps
Assemble and set the caps
Make four holes in the frame wall: two at the top, two at the sides. Push each vent tube through from inside so its flange seals on the inside of the wall, and screw the cap on so its flange seals on the outside. Seat the lens against the rim flange, guided by the shoulders, and press the snaps home. Thread a head strap through the two loops. Before work, turn each cap so its solid side faces the expected splash, with one hole pointing down. Air then winds in under the cap and back down the tube; particles strike the walls and drop, and any liquid drains out of the lower hole. Not given: the strap material.
Efni fyrir þetta skref:
Óþekktur efniviður1 head strapNauðsynleg verkfæri:
GatariEfni
4- 1 frameStaðgengill
- 1 lensStaðgengill
- 1 2 pairsStaðgengill
- 1 head strapStaðgengill
Efni úr tengdum teikningum
10% eignun
Chemical Splash Goggles: One Sealed Lens in a Moulded Rubber Frame (Hirschmann, 1954)
eftir Emma
Vélfræði
9
0
0
0
1
0
Hættulegt
10% eignun
LDPE Pellets: Ethylene Polymerised at 1500 Atmospheres with a Trace of Oxygen
eftir Charlie
Iðnaður
13
0
0
0
2
0
10% eignun
Plastic Sheet and Blown Film Extrusion
eftir Emma
Sprautumótun
43
0
0
0
2
0
10% eignun
The Snap Fastener: A Spring That Pinches the Same Every Way
eftir Tex
Textíll og leður
42
0
0
0
1
0
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Tengd Blueprint
Þessi blueprint deila þekkingu — tækni, efni eða meginreglur
CC0 opinbert ríki
Þessi teikning er gefin út undir CC0. Þér er frjálst að afrita, breyta, dreifa og nota þetta verk í hvaða tilgangi sem er, án þess að biðja um leyfi.
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