The Jacquard machine analyzed and explained: with an appendix on the preparation of Jacquard cards by Posselt Emanuel Anthony 1858-

Author:Posselt, Emanuel Anthony, 1858- [from old catalog] & Philadelphia museum of art. [from old catalog]
Language: eng
Format: epub, pdf
Tags: Jacquard weaving
Publisher: Philadelphia, Pa., Published under the auspices of the school [Pennsylvania museum and school of industrial art]
Published: 1887-03-25T05:00:00+00:00

Fig. cxv.

cylinder. The black spots represent the knots, either as caught in the slot or passing free in the hole.

Looms tied-up on the foregoing principles have but one operation of the Jacquard needles for every two picks of the loom, there being an operation of the ground and figure lifter-boards in succession between the operations of the Jacquard needles. Each Jacquard needle controls two tails, one connected with the warp for the figure, (red and black in our example), and the other to the warp for the ground, (olive and white in our example). The drawing of the lifter-boards shows the slots for catching the tails in opposite directions from each other ; hence, when the figuring tail of the needle is adjusted so as to be lifted by the figure lifter-board, the ground-tail will not be acted on by the ground lifter-board when it rises.

To give a clear understanding of the foregoing explanations, a detailed statement of the operations of the loom necessary in weaving a piece of the fabric is shown in sectional cut Fig. CVIL, as follows :

Fig. CXV., p. 76, illustrates a fabric design for an ingrain carpet, straight-through tie-up, a and b forming one repeat, (or one division), equal to one-half yard.

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