US7990A - Jagqtjaed-machine - Google Patents

Description

` 3 sheenssheen 1. J. sGoTT a; J. TANNAHBLL.

No.7,990. Patented Mar. 18., 1851.

` J.sooTT &

3 Sh.eets-Sheet J.TANNAHBLL; LooM.` i

Patented Mar. 18, 1851.

LOOM.

Patented Mar. 18, 1851.

f UNITED STATES rATENTorrion. i

JOHN SCOTT AND JOHN TANNAHILL, OF PHILADELPHIA, PENNSYLVANIA.

JAcQUARD-MACHINE.

Specification `ozt Letters Patent No. `7,990, dated March 18, 1851.

quard machine, the treadles being connect-` ed with it, but the other parts ofthe loom being omitted as unnecessary forthe explanation of the invention. Fig. 2 is a :tront elevation oi''r the same. `Fig. 3 is a trans-` `verse vertical section` of "thejsame through the center. Fig. 4 is a detached view in perresponding' spective of one ofthe double `lockers for giving motionto thecylinder frame.

*Similar letters of reference indicate"corparts in` each of the several figures.` f j" y l The nature of our invention consists firstly, in an improvement in the `manner of operating thecylinder "for the purpose of turningit and changing the pattern card more qulckly and, secondly, in applying tubular leaden weights to the tail cords above the harness of the` loom for the purpose of keeping tensien onthem and insuring their proper operation as the trap boards are raised or lowered.` 1.

Te enebie cenere ekiiieei in the eef te mere and use our invention, we will proceed to describe fully its construction and operation.

yA, A, representpartof the frame of the loom; B, B, the rameof the Jacquard inachinev-which has twotrap boards(C),(O) attached to plates (D), (D), capable o sliding up or down in suitable guides; these trap boards are each lsuspended by straps (E) (E), which are secured to the peripheries of rollers (F), (F), mounted on a rocking shaft G, which has bearings in the upper part of the frame, the boards being thus attached one must be always ascending while the other is descending.

`H, H, (nearthe top of the frame) are the suspending boards from which hang the knotted tail cords (a), (a), (a), (a).

I, I, are the .neck or directing boards through which the tail cords pass, below the trap boards.

J, J are the treaddles for raising and lowering the harness so as to` govern the shedding of the warp; J, is connected tothe` frontA trap board O; `and J', tothe back trap board C; the connection being formed by rods (b), (b), leading lfrom the plates D, D, to cross pieces (c), and (0'), which are connected `with the treadle by short rods (d), and (cZ). i i

(l, d, are the needles which are arranged and supported in the usualmanner, having eyes (e), (e), (e), through which the tail cords pass and `by which when moved by the cylinder `the action of the harness i's governed; the tail cords have small tubular ieeden weights (l), (z), (l), et`

tached to the below the neck board for the purpose of keeping them tight so that their knots cannot be missed or wrongly caught by the trap boards. These weights will 1 supercede` the necessity of having the weights below the harness as heavy as usual and will bemoreieii'ective in preserving` the correct operation of it.

\ K, is `the cylinder which is constructed in the usual manner, and hung in a frame con- `sisting of two parallel rods (L), (L), `which slide bearing boxes (f), (f), attached to the sides of the frames, and are held togetherin front by a transverse rod M, and

at the back bythe bar N; lc, is `the catch which turns the cylinder.

O, O, (one on `each side of the machine) are what we term the dowel lockers consisting` of plates ofmetal having bosses fitting on the `sliding. bars L, L, towhich `they are secured by set screws (g), (9,) they have grooves (z',), nearly in the form of the letter D, the straight side being slightly elongated at the bottom, a step or fall being made in the groove as thetop and bottom in the corners (see h, 7L', Fig. 4,); a spiral spring (P,) (See Fig.` 1) is coiled around Y other treadle and its board to be similarly operated, making one shed at each operation; in that case the cylinder is moved forward during the upward motion of the back board O, by which it is turned for taking another pattern card, and it is brought back to its place by the downward' stroke of the board; the groove in the locker for that purpose being nearly in the form of the letter s.

Our machine is operated by the weaver placing his right foot on the treadle J and his left foot on the treadle J, and keeping up a continuous treading motion with both feet, at the same time, causing one treadle to ascend as the other descends, and raising one board as he depresses the other, making a rising and falling shed, one part of the shed rising as the other part is falling, which allows two sheds to be formed, in the same time as one when the boards are detached; this requires the cylinder to be thrown forward, turned, and brought back to its place, by one motion of the backboard, as, if it were brought forward and turned by the upward motion, and returned to its place by the downward motion, the cards could not be properly presented to the needles.

The operation of the double locker will be seen by referring to Figs. 3 and 4. The back board C, is represented in all the Figs.; in its lowest position and the friction rollers n, a, in the lowest part of the groove z', i; as the board O is raised by depressing the treadle J, and front board C', the roller passes up to the curved part of the groove, overcoming the resistance of the spring P; and throwing forward the cylinder frame until itl (the roller) arrives at the most prominent point r, of the curve, at which time the frame has carried the cylinder to its most forward position and it (the cylinder) has been turned by the catch L, in the usual manner, so as to present its next side and another card to the needles; as the roller a, continues ascending the groove z', t',

the spring P, carries back the frame, and

of the upper step h, in the groove, is forced below it and prevented from returning down the curved part; during the downward motion of the boa-rd O, and the raising the front part of the shed, the roller works in the straight part of the groove, and the cylinder and pattern are held stationary, the roller having arrived at the bottom falls over the lower step Zt, and is prevented returning in the same direction; the two steps L, Zi, always preserving the proper direction of motion of the cylinder frame. By making the rising and falling shed, the weft is filled into a crossed shed and a closer and firmer texture is given to the cloth. The loom can also be worked at a high speed, the weights Z, Z, Z, Z, on the tail cords keeping them tight and preventing them from being displaced, at whatever speed the loom works.

l/Ve have proved by experiment that a hand loom with our improvements in the Jacquard machine will Vweave as much Vingrain carpet as any power loom, and works lighter than any loom now in use. y y

What we claim as new in our invention and desire to secure by Letters Patent is l. The manner of operating the cylinder by means of the double lockers O, O, in combination with the springs P, P, whereby its `complete operation is effected by the upward motion of the trap board O, substan' tially as, and for the purpose herein described.

2. The application of weights Z, Z, Z,Z, to the tail cords above the harness for the pur# pose of more efectually keeping them tight or straight and thereby ensuring the more correct operation of the trap boards and needles upon them substantially in the manner herein set forth.

JOHN SCOTT. JOHN TANNAHLL.

Witnesses v JOHN BINNs, J AMES MARTIN.

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