DE28695C - HEILMANN embroidery machine with lever operation - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 52: Sewing machines.

Patented in the German Empire on August 30, 1883.

The embroidery machine shown in the accompanying drawing agrees with the so-called. Heilmannschen Embroidery machine agree that there are two points at both ends and one in the middle Needles provided with an ear are grasped by needle nose pliers and through the to be embroidered Fabric can be pulled through.

The main difference between the two embroidery machines lies in the fact that Heilmann's Embroidery machine the needle nose pliers move away from the fabric to be embroidered until the embroidery thread is pulled taut, while the needle nose pliers in the present embroidery machine only move away from the embroidery until there is enough space between the fabric and the pliers is for a thread guide and suit apparatus that pulls the embroidery threads out of the fabric and tighten the stitch.

The interaction of the tools required to produce the stitch is shown graphically on sheet III, ί is the substance through which needle nose pliers B pierced needle η in FIG. 8. During the next manipulation, the pliers B 'are closed and B opened, FIG. 9, whereupon the pliers B' with the needle η moves a few inches away from the plane of the fabric and remains in this position up to the position shown in FIG.

While B ¹ moves into the position shown in FIG. 10, the two hooks DD grip from above and the hooks M from below between the embroidery threads, FIG. 10, and then rotate about their axis so that they place the thread between them Include, Fig. 11.

Then the hook M, which has grasped the piece of embroidery thread lying between the hooks D and D , moves downwards until the stitch is tightened enough, FIG the stretches lying outside the hooks are stretched almost perpendicular to the plane of the fabric and in the direction of the needle.

While the pliers B ^1, to make the next stitch, the substance level again approaches, the hook DD rotate in the in Fig. 10 drawn position and lift from the thread back out, so they That the movement of the gun B ¹ are not a hindrance. From here on the same manipulations are repeated with the pliers B ¹ and the associated thread guiding and tightening devices, so that the thread is tightened alternately to one and the other side of the fabric, as required by the embroidery.

Movement mechanisms.

The needle-nose pliers do not need to be attached to a carriage, as they are only slightly removed from the plane of the fabric, as in the Heilmann embroidery machine, but are attached to frames A swinging around the axis p on which the impression shafts c are stored, which in a known manner cause the opening of the spring-locked needle nose pliers B Β ^Λ at the appropriate moment.

The frames A are pressed outward by the eccentric H and held in the outermost position by a spring J , FIGS. 1 and 2. At the same time, the thread guide device C shown in FIGS

Claims (2)

the pins U are placed between the threads, the toothed steel bar o, FIG. 4, shifts sideways and the hooks D D provided with toothed segments rotates so far that they assume the position shown in FIG. Then the pin y located on the lever Q, FIG. 2, presses on the rod s1 and the lever connected to it 'A! and thus also the thread pulling apparatus L connected to the latter by pull rods, whereby, similar to the thread guiding apparatus, a toothed rack o is shifted laterally and the rotation of the hooks M is effective. By turning the crank F backwards, the eccentric H moves back, releases the spring J, and the counterweights R push the frame A with the row of needles B on it back to the fabric and at the same time bring the hooks D that have come from above and hold the threads with the whole apparatus C back into its vertical position. The triggering of the needles on one side and the simultaneous holding of the same on the other side is effected by the double eccentric V. The same presses the protruding lug /, Fig. 2, down; when it goes down, the other lug / is raised. Both lugs are connected by tie rods g to a double lever h, which sits on the axis i. Behind the double lever h sits a second double lever on the axis i, which is connected by tie rods W, Fig. 1, which guide themselves through pins k in the coulisses X in the levers A and mediate the rotation of the eccentrically mounted impression shafts c, whereby the opening and closing of the needle nose pliers is effected automatically. The same activity is now repeated exactly as described on the other side in its different tempo. The mounting frame A α for the fabric and its balancing together with pantograph or cranesbill remains the same as on conventional embroidery machines. In Fig. 5, a hook is shown with rollers, such as those used with less strong yarn. Patenτ claims: 1. The interaction of the tools (needle nose pliers BB ¹ , thread guide hook DD and thread pulling hook M) in such a way that while needle pliers remain at a sufficient distance from the plane of the fabric, the thread pulling hook M moves the thread E held and guided by the thread guide hook DD through the fabric through and tighten the stitch. 2. The arrangement of the needle nose pliers swinging open, moved by eccentric H and counter weight R frame A. In addition 3 sheets of drawings.