Ukusebenzisana
UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
English
Youblob · CC0
Elastic Cord: Cotton Braided over a Stretched Rubber Strand (Blakesley 1889)
Braid cotton round a rubber strand while the rubber is stretched, and the cord springs back when it is let go. Gilbert Blakesley of Bristol, Connecticut set the stretch so that the braid stops the cord before the rubber is pulled past the point it fully recovers from, and so that at rest the rubber carries no tension at all. The braid protects the rubber and it lasts.
Source: G. H. Blakesley, US 411,416 (1889). The rubber strand is our rubber thread blueprint; the tools are ours. Picture drawn by Youblob.
Ophakathi
2 hours
Imiyalelo
1
1
Feed the rubber under tension
Feed the rubber under tension
Pass a long rubber strand, or several, under tension through a braiding machine. Round or flat, one strand or more: Blakesley says it does not matter.
Izinto zokwakha zalesi sinyathelo:
Intambo yerabha1 as requiredAmathuluzi adingekayo:
Umshini wokuluka2
2
Braid on a cotton cover
Braid on a cotton cover
Let the machine braid a covering of cotton thread over the stretched rubber with a rapid feed.
Izinto zokwakha zalesi sinyathelo:
Intambo Yekotini1 as requiredAmathuluzi adingekayo:
Umshini wokuluka3
3
Set tension against feed
Set tension against feed
Adjust the rubber tension and the braider feed so that, when the cord is pulled, the braid reaches its full length before the rubber reaches its safe stretch, the stretch it fully recovers from without risk of breaking. At rest, the rubber should be under no tension at all.
Amathuluzi adingekayo:
Umshini wokuluka
Irula4
4
Optional soft second cover
Optional soft second cover
For a softer cord, pass it again, under tension, through a braider that lays a loose second covering of soft thread such as silk or wool.
Izinto zokwakha zalesi sinyathelo:
Intambo kasilika1 as requiredAmathuluzi adingekayo:
Umshini wokuluka5
5
Reel it
Reel it
Wind the cord on a reel as it leaves the braider.
Amathuluzi adingekayo:
Isethi yamasonto entambo yokuthungaIzinto
3- 1 as requiredIsibambeli
- 1 as requiredIsibambeli
- 1 as requiredIsibambeli
Le blueprint yenza
Ama-blueprint ahlobene
Lama-blueprint abelana ngolwazi — amasu, izinto noma izimiso
CC0 Isizinda Somphakathi
Le blueprint ikhishwe ngaphansi kwe-CC0. Ukhululekile ukukopisha, ukuguqula, ukusabalalisa, nokusebenzisa ngaphandle kwemvume.
Sekela uMenzi ngokuthenga imikhiqizo nge-Blueprint yabo IKhomishane Yomenzi kumiswe ngabathengisi, noma dala inguqulo entsha yale Blueprint bese uyifaka njengoxhumaniso ku-Blueprint yakho ukuze wabelane ngemali engenayo.