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Element Holding Strips: Notched Steel Webs for a Cast-In Heating Coil
A tubular heating coil cast into a hot plate must not shift while the metal is poured. Jordan and Schneider (US 1,998,764, 1935) hold it with strips of sheet metal or wire fixed across its turns, or with webs notched for each turn whose slotted tongues are bent round the tube. These are the notched webs, cut from mild steel sheet; sizes are ours.
The picture: Figs. 3–7 of US 1,998,764: holding strips f, notched webs g.
Mwanzo
2 hours
Maagizo
1
1
Measure the coil
Measure the coil
Measure the tube diameter and the spacing of the coil's turns across the spiral, along the lines the webs will lie.
Zana zinazohitajika:
Kipima-unene cha dijitali cha inchi 6
Rula2
2
Cut the strips
Cut the strips
Cut strips 10 mm wide from 1 mm mild steel sheet, each long enough to cross all the turns.
Vifaa kwa hatua hii:
Bati la Chuma Laini1 kipandeZana zinazohitajika:
Kichora MistariRula
Mkasi wa bati
Glavu za Kazi za Ngozi3
3
Notch for each turn
Notch for each turn
Mark the turn spacing on each strip and saw a notch for every turn, as wide as the tube. Saw a slot down the middle of each tongue left between two notches.
Zana zinazohitajika:
Kichora Mistari
Msumeno wa chuma
Kibano cha meza ya kazi
Miwani ya usalama4
4
Deburr
Deburr
File off all burrs so the tongues can be bent round the tube without tearing. After the coil is pressed into the notches, the tongues are bent round each turn.
Zana zinazohitajika:
Seti ya tupaKibano cha meza ya kaziVifaa
1- 1 kipandeKishikilia Nafasi
Zana Zinazohitajika
9- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
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