Iu the profile elevation, Fig. 7, not only the general appearance of the loom will be exl.ibited in a dill'erent point of view, but akc some parts not she wil in Fig. 6. and between both every thing of consequence will be found. A recapitulation of the whole reference letters will be sufficient for what appears in Fig. 6. and a short description for those which do not. AA are two of the upright posts extending from the floor to the roof, and firmly secured to both. B is the post for the barrel, and is here supposed to be fixed at the top to a ero,• rail, nailed or screw ed to the roof. C, ll, and E do not appear, being behind the post B. F is the end of the axis of the barrel appearing through the upright post, and G the barrel itself, the rachet being here placed to the left hand. H is the catch by which the rachet is pulled. I the lower part of the lashes fixed like the semples of a common draw-loom, the lashes forming a small curve, in order to ensure a constant pressure against the barrel. K and Y the wheel and pinion, by which the barrel is moved round. L, M, 0, and P do not appear, the view being the opposite side of the loom. N shews one of the heddles, the wipers which move them being concealed by the wheel K. Q, the lashes. R, the pullics which support the four leaves of heddles omitted in Fig. I, and the heddles themselves appear at S. At T is the lay and reed, at U are the rods for the two warps, and at V the double cloth. The two beams
are at a b, and the tension of the web is preserved by two inverted balances, the lighter weights being at X, and the heavier suspended on levers at WW. The le vers acting as steelyards, the tension may be increas ed or diminished at pleasure, merely by moving the weights.
It has been deemed unnecessary to specify particularly any way of moving the web from one beam to the other, because three different plans will be found, which are in actual use in the representations and descriptions of pow er-looms, given under the article CLOTH MANUFAC TURE ; and either of these may be applied to this loom with equal facility as to any other. It is, however, ne cessary, in order to complete the automatic properties of the loom, either that one of these, or some efficient substitute for them, should be adopted. The shuttle and lay motions being also common to all power-looms, are therefore totally omitted here.
The above description will probably enable an intelli gent mechanic to comprehend the principles of the inven tion; but in this, as in all new discoveries, much im provement is always to be expected and acquired by actual trial. Its obvious utility, even as a first sketch, • may render it of service to those who find it their inte rest to prosecute this manufacture. (J. D.)