DE29625C - Innovations on the HEILMANN lever-operated embroidery machine - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS S2: sewing machines.

Patent addition to No. 28695 of August 30, 1883.

. Patented in the German Empire on March 27, 1884. Longest duration: August 29, 1898.

In order to save a few speeds with the interaction of the tools, as shown in the main patent, and to simplify the construction of the machine, the tools are arranged as shown in the accompanying drawing, FIGS. On both sides' of the fabric s are the rails a a ' to which the U-shaped bent wires bb' are attached.

The rails c c ', which take part in the movement of the needle-nose pliers, carry the open wire hooks h h'.

The interaction of these tools with the needle nose pliers B B ', the needles »and the threads / is as follows:

While the wires bb ' and the hooks h are low and the hooks h' are high, the pliers B pierce the needles η through the fabric s, FIG. 1; the clamps B ' are closed and the clamps B opened, FIG. 2.

Then the rail "'is raised so high that the thread / rests on the wires b' , Fig. 3b, and the needle-nose pliers are removed a few centimeters from the fabric, whereby the rails c ' do not move quite as far sideways with it they come to stand in front of the needles η , FIG. 3.

After this, the rail c 'is down

and the rail c is moved upwards until the hooks h ' have tightened the stitch, Fig. 4, and the hooks h are so high that they cannot be sewn into place, Fig. 4a.

Finally, after the bar a 'has returned to its lowest position and the sticker has shifted the fabric by the stitch length in a known manner, the pliers B' pierce the needles through the fabric and the game repeats itself on the other side of the fabric in the same way Way.

The purpose of the devices of the machine shown in FIGS. 5 to 14 is to produce the movements of the tools described above completely automatically. The needle-nose pliers BB ', the rails cc' to which the thread pull hooks hh 'are attached, as well as the eccentrically mounted impression shafts d d' carry a carriage w w 'in front of and behind the fabric plane in a double arrangement.

The rails cc ' push themselves on the tracks e e', which by shaft e ₂ e ₃ and the bolts surrounded by gas pipes <? ₄ e _{h are connected} to form rotatable frames, up and down when the brackets gg 'connecting the rails cc' are moved up and down by the lever mechanism h ₃ Z ₁ A ₄ , Z ₂ Zi ₅ Z ₃ , FIG. 11.

This lever mechanism is moved by the eccentric z, Fig. 5, 6, 10, 13 and 14, which is stuck on the main shaft fF, by pressing it against the conical tip of a bolt Z ₃ , which is attached to the lever A _{3 and slidable in the housing z 2,} and thus depresses lever Zi ₃ ; the pull rod Z ₁ transmits the movement to lever h _lt from where it is transmitted through Z ₂ h $ Z ₃ to bracket g . Since the bracket g the car

movement, the lever Zi _{5 is} mounted in a swinging arm a _3.

The movement of the carriage -ω is brought about by the eccentric k by moving it back and forth through the roller k ₂ connected to the carriage by the arm k _x , FIGS. 5, 7, 8 and 9.

When both carriages have driven in, the thumb stuck on the main shaft W _x hits the nose of the horizontally displaceable bolt m, Fig. 5, 6, 7 and 12, and pushes the same to the side, Fig. 8. Here, one of the pushes inclined surfaces of the bolt down the role M ₁ , while it _{allows the role Ot 2} to lift.

The rollers mm ₂ are connected to the lever M , which can be rotated by χ and which carries the pulling hooks d _z d _t at its outermost ends, Fig. 5, 6, 7 and 12. The rollers d ₅ d _{e are in these outwardly open hooks} retracted, FIGS. 7 and 12, which are connected by levers d _% d _% to crank d _{9 of} the impression shafts dd _x . The cranks on the right-hand side, FIG. 12, are therefore pulled down and the crank d 'on the left-hand side pushed upwards, so that the pliers JB' are closed and B are opened, as in FIG. When the shafts W ₁ W _{2 continue} to turn, of which W _{1 is to the} right and W%, since it is connected to W ₁ by gears r _x r ₂ , moves to the left, the eccentric k ^] hits the carriage roller and thereby moves the Carriage w ' outwards, so that the tools assume the position shown in FIG. 3, since the carriage depresses lever a ² when it moves out and thereby lifts the rail "". At the same time, also the rail <fall r 'carrying rails e ^1, which had previously on the right side of Fig. 5 position shown occupied by, rotate about the shafts i ³ thus forward until the collar e ⁶ rests against the guide eye £ ₇ , as a result of which the rail c assumes the position shown in FIGS. 5 and 3. The eccentric / bolt i _z , FIGS. 10 and 11, and thus, as described above, also presses the rail C _x down until the hooks have pulled the threads / taut, FIGS. 4 and 11. From here onwards the threads oppose such a significant resistance to the further movement of the bolt i ₃ that i ₃ is pushed back into the housing by the beveled contact surface of the eccentric i, FIGS. 13 and 14, and does not prevent the further movement of the eccentric, FIGS. 9 and 14. A spring / 'stuck in the housing i _{2 , which always presses the bolt z 3} outwards, can be tensioned more or less so that the strength of the spring tightening can be precisely adjusted as required.

This means that the suit is not left to the feeling of the sticker, that the movement of the waves W _x W ₂ always takes place in one direction and that the machine can therefore be driven by elementary force.

In Fig. 5, for the sake of clarity, the bolt m and the tie rod m ± are exposed on the right half and the bracket W _{3 has also been} omitted.

From the eccentric positions shown in FIGS FIG. 7 corresponds to FIG. 1, FIG. 8 to FIG. 2, FIG. 9 to FIG. 4 and FIG. 10 3 of the tool positions.

Claims (2)

Patent claims: 1. The use of the non-rotatable wire bracket bb ' instead of the rotatable hook DD of the main patent and the use of the non-rotatable hook hk ¹ in place of the rotatable hook M of the main patent. 2. The movement mechanism of the embroidery machine, characterized by: a) the lever mechanism actuated by eccentric i h _z z _x h _t 2 ₃ which the Rails cc ¹ moved; b) the device that the bolt i _% , as soon as the tension of the threads has reached a certain level, is pushed back and then allows the further movement of the main shafts W _x W ₃ with the lever system A ₃ to Z ₃ stationary; c) the application of the horizontally slidable. The bolt m, which, displaced by the thumb / /, moves with its inclined surfaces the lever M carrying the pulling hooks d _s d _{& in} such a way that the impression waves dd ^x close and open the needle-nose pliers at a suitable moment. For this purpose 2 sheets of drawings.