DE85277C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 86: Weaving.

Patented in the German Empire on January 19, 1894.

Mechanical looms equipped with shuttle changing devices generally not that speed and efficiency as such without them. Especially those with devices for more than fourfold change and riser arrangement are limited in their number of tours, because the larger number of cells at least so great complications in the execution require that all the main requirements of one Change of contactors, such as smooth, shock-free movement, absolute - ^ 'safe lifting and Lowering the boxes with minimal effort, usually not available at the same time are.

The present new shooter changing device for multiple (eightfold) changes fulfills all these conditions to such an extent that the performance and number of tours such looms is almost equivalent to those without a changing device.

It is arranged so that all moving parts of the on a shaft next to each other mounted cranks or eccentrics up to the contactor box itself in quite are firmly connected, whereby the lifting or lowering of the contactor box is effected in a completely positive manner.

The end positions of the individual boxes are determined by the end positions of the cranks or eccentric fixes the positions (dead points) in which each pressure of the fixed shaft is recorded.

To avoid inaccuracies in the different lifting heights, the arrangement taken to give the lifting members of the device that small stroke that the arc length in the movements achieved is small and hardly deviates from a straight line, therefore at the end positions of the relevant lever cannot be inequalities in the stroke due to shortening.

To the occurring mass effects with larger number of revolutions of the chair, as well as the Preventing wear and tear on the moving parts is the dead weight of the contactor box and carrier by a corresponding spiral spring attached to the carrier during lifting as well as sinks completely eliminated and balanced.

Description.

In Fig. 1 and 3 the side view, in Fig. 2 the front view, in Fig. 4 the view from above according to section AB, in Fig. 5 the shooter changing device is shown schematically, Fig. 6 shows schematically the entire arrangement of the b crank up to the riser charging w, and further, FIGS. 7 to 11, the various end positions of the shuttle box w of multiple protecting changing device for six positions. Fig. 12 gives the schematic representation and Figs. 13 to 19 show the different positions of this multiple shooter changing device for eight positions.

(■ 2nd edition, published on November 28th igojj.j

From the crankshaft a of the mechanical loom, the short shaft a ^l , on which the crank b sits, is driven by conical wheels. The same moves (Fig. 12 and 3) the lever d firmly connected to the shaft e, of which the two knife rails gg ^{l are set} in upward and downward movement by the tie rods / '. From the sample card h (FIG. 1), depending on whether it has a roller or sleeve, the perpendicularly arranged toothed plates kk ^l k ^{2 are brought} with their noses H ¹ P in front of the knives g'g · ¹ , grasped by them and taken away . The teeth of each plate engage in a corresponding tooth segment / Z ¹ Z ' ² , the latter sit next to each other loosely and rotatably on the fixed bolt x. The toothed segment Z carries a circular center m cast, which is enclosed by the eccentric ring r and is guided at point ο by the lever arm ρ mounted on the fixed pin y . Similarly, the toothed segment Z ¹ carries a circular center m ^l , which is enclosed by the eccentric ring r ¹ and receives guidance from the lever s at point o ¹ , which has its pivot point in the bolt q attached to the first lever arm ρ .

Furthermore, the toothed segment Z ² carries a cast-on crank Ot ² , which is connected by the tie rod η at point o ² to the lever t , which in turn has its pivot point in the bolt q ¹ attached to the second lever s.

From the point o ^{3 of} the lever t , the pull rod u goes to the contactor box support ν (at point o ⁴ ), which is firmly connected to the contactor box n> . With each tooth segment there is also a small recess for receiving a brake band, which in its effect only has the purpose of preventing any advance of the toothed plates kk ¹ k ² during the movement.

A short lever arm, in which the spring \ is suspended, sits on the contactor box support ν. The other end of the same is attached to the side wall of the chair.

Mode of action.

Depending on whether the tooth plate k (FIGS. 12 and 1) is pulled up or down by the up and down blades gg ^l , the toothed segment Z with the circle center m receives a downward or upward half rotation. The eccentric ring r surrounding it, which has a guide in 0, lowers or rises, with it the lever arm p mounted on the bolt y , and consequently the bolt q as the fulcrum of the lever s lowers or rises.

Depending on whether the second tooth plate A: ¹ is pulled up or down by the ascending and descending knives gg ¹ , the second tooth segment Z ¹ with the second circle center nz ¹ receives a half-turn down or up. The eccentric ring r 'surrounding it, which has guidance in 0', lowers or rises, along with the second lever s mounted on the bolt q.

Depending on whether the third tooth plate A: ^{2 is} pulled up or down by the ascending and descending knives gg ^] , the third tooth segment Z ^{2 is given} half a turn down or up and the cast-on crank m? Movement to or fro in the horizontal direction, as well as the third lever t connected by the tie rod η at point o ² , which has its bearing, ie the pivot point, on the bolt q ¹ .

As a result of the upward and downward movement of the two levers ρ and s, as well as the pivot point q, the end point ^ ¹ in the perpendicular direction is given four positions, which are communicated to the lever t mounted in q ¹ and moving back and forth in the horizontal direction, so his point o ² receives eight different positions, which lie in a figure, similar to a rectangle. However, these eight positions come into play at point o ^{3 of} the lever t, which is constructed as an angle lever, as eight exactly the same height positions or positions, which are almost perpendicular to each other.

The angle lever t , through the sole pull rod u, gives the contactor box support at point o ⁴ , and the contactor box has eight equally high end positions.

By appropriate choice of the stroke of the two circle centers mm ¹ , instead of four, three positions in the perpendicular direction can be achieved in the same way at the end point q ^{1 of} the lever s, which then, in conjunction with the angle lever t at point o ^3, express six exact heights bring and give a six-line contactor box its end positions (Fig. 6 to 11).

By reducing the stroke of the crank m ² is further by coincidence of two positions in Fig. Created a middle position 20 and 21 so that THEREFORE t the angle lever at the point o ³ five exact altitude is reached (Fig. 20 to 24), while by distant Reduction of the stroke of the eccentric m ^l the three positions in the perpendicular direction can be reduced to two, so that now the point o ^{3 of} the angle lever t only expresses four exact heights, in which case the stroke of the eccentric m is then equal to zero ( Figs. 25 to 28).

All movements of the circle center and cranks are closed, i.e. inevitable, and the end positions are fixed by the perfect half-rotations of the same in the dead points.

Claims (1)

Patent claim:
A shooter exchange device of the type characterized by patent specification no. 32963, in which .the required number of box positions for a vertical drawer with eight respectively. six cells comes about by the fact that with the help of three independent circular centers or cranks (m ιη ^Λ m ² ) rotatably arranged on a shaft, three levers (pst) are acted on, the first of which around a frame pin, the second about a pin arranged on the first, the third can rotate about a pin located on the second and this third lever (t) transmits the movement received for each shot to the riser. In addition 6 sheets of drawings.