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Uninked Ribbon Fabric: Narrow Woven Cotton Strip with Two Selvages (Rogers, US 420,312, 1890)
Early typewriter ribbons were cut from a roll of fine cotton cloth and the cut edges glued; the edges came out zigzag and the glue spoiled the inking surface. Rogers wove the ribbon to width instead, so it has two true selvages and needs no glue.
Result: a narrow cotton ribbon with straight woven edges, ready for inking.
Source: Rogers, US 420,312 (1890). He chose cotton over silk: silk cost more, held less ink and sagged in the middle. Not given: width, thread count. Picture drawn by Youblob.
中级
Factory process
说明
1
1
Warp a narrow loom with fine cotton
Warp a narrow loom with fine cotton
Set up the loom for a ribbon of typewriter width, not a wide bolt. Rogers used fine cotton; width and thread count: not given. Ours: a power loom (Rogers built his own machinery).
此步骤所需材料：
棉线1 as required所需工具：
动力织机2
2
Weave the ribbon to width
Weave the ribbon to width
Weave the strip at its final width so both edges are selvages: straight, unravelling-free, with no cut edge to glue.
此步骤所需材料：
棉线1 as required所需工具：
动力织机3
3
Wind it off for inking
Wind it off for inking
Take the woven ribbon off the loom; its whole surface is free for ink. Rogers then inks it on one side only.
所需工具：
动力织机此蓝图制作
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