Bradbury, F. (Fred) · Manchester : John Heywood Ltd. · leaf 24
ABCDFig. 9. In all the illustrations from Figs. 1 to 30, the following indica-tions are common.l — The lease rods.H1 etc. = the heddles. x = The order of drafting the warp threads through the heddles.t = The order of lifting the heddles, denominated tramp, pegging plan or shedding. 20 JACgUARD…
Textile machinery
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-364-42.webp)
