IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Rubber Hose: Braided, Spirally Wrapped and Vulcanized in Long Lengths
Henry Cobb's wrapped hose (Revere Rubber, US 1,230,867, 1917). A rubber tube is forced through a ring die, braided over while held open by pressure, wrapped by machine with a helical strip of frictioned fabric overlapping half its width, covered in rubber and vulcanized. Wrapping by machine instead of rolling bias-cut fabric by hand lets the hose run 500 ft or more, and Cobb says it stands nearly twice the bursting pressure.
The patent gives no sizes, recipes or cure times. Couplings are not part of it: an air hose is this hose with couplings fitted. The picture: the patent's sheet 1.
Ilọsíwájú
1 day
Ìlànà
1
1
Force the inner tube
Force the inner tube
Force vulcanizable rubber compound through the ring-shaped gap between the two parts of a tube die to make the inner tube (1).
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àdàlù rọ́bà1 batchÀwọn irinṣẹ́ tí a nílò:
Mọ́ọ̀dù ìfúnjáde ọ̀pá2
2
Braid over the tube
Braid over the tube
Run the tube through a braiding machine that lays crossing helical strands over it (2), coating the strands with rubber compound as they braid. Keep the tube under air pressure so it does not collapse. Ours: the air from a compressor. The braid may be left out, but it holds the hose to size.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Òwú1 batchÀdàlù rọ́bà1 batchÀwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìdìrun
Ẹ̀rọ ìfun afẹ́fẹ́3
3
Cut the fabric along the warp
Cut the fabric along the warp
Cut frictioned fabric into a long strip lengthwise, along the warp threads; wound helically, both warp and weft then run round the hose as if cut on the bias.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Aṣọ tí a fi rọ́bà kún1 ìyípoÀwọn irinṣẹ́ tí a nílò:
Ọ̀bẹ iṣẹ́4
4
Wrap the strip half over
Wrap the strip half over
Feed the braided tube through the wrapping machine, which winds the strip (3) round it under tension, each turn over half the last: two plies, the whole length without stopping. For four plies wind a second strip (5) over the first, in the same pass or a second.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìwé ọ̀pá-omi rọ́bà5
5
Plies from the overlap
Plies from the overlap
Ń ṣí ìwé Jupyter…
6
6
Cover and vulcanize
Cover and vulcanize
Apply a layer of rubber compound (4) over the last winding for a smooth, protected outside. Vulcanize the hose for its whole length in a mould or otherwise.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àdàlù rọ́bà1 batchÀwọn irinṣẹ́ tí a nílò:
Mọ́ọ̀dù ìsè rọ́bàÀwọn irinṣẹ́ tó nílò
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