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Elastic Cord: Cotton Braided over a Stretched Rubber Strand (Blakesley 1889)
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27. Oktoba 2026FO
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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.
Kati
2 hours

Maagizo

1

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.

Vifaa kwa hatua hii:

Uzi wa mpiraUzi wa mpira1 as required

Zana zinazohitajika:

Mashine ya kusukaMashine ya kusuka
2

Braid on a cotton cover

Let the machine braid a covering of cotton thread over the stretched rubber with a rapid feed.

Vifaa kwa hatua hii:

Uzi wa PambaUzi wa Pamba1 as required

Zana zinazohitajika:

Mashine ya kusukaMashine ya kusuka
3

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.

Zana zinazohitajika:

Mashine ya kusukaMashine ya kusuka
RulaRula
4

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.

Vifaa kwa hatua hii:

Uzi wa haririUzi wa hariri1 as required

Zana zinazohitajika:

Mashine ya kusukaMashine ya kusuka
5

Reel it

Wind the cord on a reel as it leaves the braider.

Zana zinazohitajika:

Seti ya bobini za uziSeti ya bobini za uzi

Vifaa

3
  • 1
    Uzi wa mpira
    1 as required
    Kishikilia Nafasi
  • 2
    Uzi wa Pamba
    1 as required
    Kishikilia Nafasi
  • 4
    Uzi wa hariri
    1 as required
    Kishikilia Nafasi

Zana Zinazohitajika

3

Mchoro huu unatengeneza

Thumbnail
Kishikilia nafasi

Kamba ya mpira

Free

115
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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Rubber Thread: One Long Strand Cut Spirally from Cured Sheet (Gibbons 1934)

Rubber Thread: One Long Strand Cut Spirally from Cured Sheet (Gibbons 1934)

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Nguo na Ngozi

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