Tessitura di cotone: il suo sviluppo, principi e pratica . om. E quando si aggiunge che egli includeda positiva assunzione moto per il panno e lasciar-offmotion per i fili di ordito, e anche la rottura di una trama-stoppingmotion, e la rottura di un ordito thread-moto di arresto, thereader concluderà che ha tentato di troppo e nowonder sarà ritenuto che egli non riuscito. Come è sulla sua fondazioni-zione che meravigliosamente il perfetto telaio automatico della presente giornata è costruito, sarà interessante per lo studente toexamine la realizzazione degli inventori idea in alcuni de-coda, mezzi per i quali è prevista nell'allegato I

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Cotton weaving: its development, principles, and practice . om. And when it is added that he includeda positive taking-up motion for the cloth and letting-offmotion for the warp, and also a broken-weft stoppingmotion, and a broken-warp-thread stopping motion, thereader will conclude that he attempted too much, and nowonder will be felt that he failed. As it is on his founda-tion that the wonderfully perfect automatic loom of thepresent day is built, it will be interesting to the student toexamine the embodiment of the inventors idea in some de-tail, means for which is afforded in the annexed illustration, fig. 17, which is a reduction of the drawings accompanyinghis specification of October 30th, 1786. We may premisethat the drawing is crude and imperfect, showing a want ofskill in mechanical drawing. The view given is, however, accompanied by a number of drawings of details, but thetask of combining them in one machine must have beenvery difficult. The language in which the specification isdrawn is as crude and incomprehensible as the drawings, . THE POWER-LOOM AND ITS DEVELOPMENT. 65 and would need the expenditure of much more time andpatience than the average reader would be likely to giveto get approximately near its meaning. This being thecase, the writer prefers to submit a paraphrase of it, whichhe hopes will remove most of the obscurity in which Dr.Cartwrights meaning was hidden, whether intentionallyor otherwise it is not necessary to inquire. It will be observed that the inventor has adopted theordinary hand-loom frame. Instead of the common singlebeam for the warp, he has substituted a yarn bobbin frame, from which the cloth can be woven, he says, withoutthe trouble of winding, warping, or beaming. It willbe remembered that it was customary for the hand-loomweaver to size or dress his warp in the loom in lengthsfrom near the healds to the warp beam. This practice thelearned doctor endeavoured to obviate by inventing theautomatic arrangement shown in the illus

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1890
• bookpublisheretcet
• bookyear1895