The Jacquard Machine Analyzed and Explained / With an appendix on the preparation of jacquard cards, and practical hints to learners of jacquard designing

by E. A. Posselt

[Fig. 86] shows a horizontal and vertical border, both of the same design. It is obvious that it would be a very imperfect design if either border should be allowed to form the corner, hence a union must be carefully constructed embodying the same general features as the design.

Fig. 86.

Transferring of the Sketch to the Squared Designing Paper.

Having obtained a perfect sketch of the design as it appears in the fabric, or as it is desired to show, the outlines are transferred to the □ designing paper. This always requires an enlargement of the design, and to accomplish this the sketch itself must be ruled proportionally to the heavy squares found on the □ designing paper. If these squares should be too small for the sketch, they may be enlarged by throwing 4, 9, or 12 of the “squares” into one large one; which is indicated by extra ruling off with pencil upon the required heavy lines. In this case the sketch is ruled off corresponding to these pencil lines. The transfer of the sketch to the required □ designing paper is governed by rules already explained for the enlargement of a design on the regular drawing paper. After the design is transferred to the □ designing paper it must be “outlined in squares.”

Outlining in Squares.

This consists in painting the small squares forming the outline of the figure as called for by the outline of the drawing. Two methods are observed: One “outlining in squares” inside the “drawing outline;” the other “outlining in squares” outside the “drawing outline.”

If painting outside the outline, no small squares are taken, in which the drawing outline, taken from inside the figure, encloses more than one-half of their surfaces. If painting the “outline in squares” inside the “drawing outline,” this rule is reversed, thus no small square can be taken which is overrun by the drawing outline more than one-half from the outside of the design. The most difficult part of the outlining in squares is to obtain the nearest possible reproduction of the drawing outline. If circles, curves, etc., are to be made, they must be reproduced as nearly correct as possible; no bunches, cuts, etc., should disturb its symmetry.