Textilma Ag

Fritz Gegauf Aktiengesellschaft Bernina-Nahmaschinenfabrik

Bernina International Ag

Itz Gegauf Aktiengesellschaft Rnina-Nahmaschinenfabrik

Gerard A Durville

Francisco Speich

Robert R Bucher

Niklaus Wacker

Beda Steinacher

Giuseppe Mele

Roland Beer

Michael Berger

A monitoring device () for monitoring the needle thread () on a sewing machine () is provided which includes a regulator spring () with at least one cam switch () being connected thereto in a rotational manner. In case of changing thread tension and/or thread consumption the cam switch () and/or the detection zones () embodied thereat passes through a sensor () with two sensor areas (a, b). Here, not only the presence and absence of the cam switch () can be detected but also a direction of motion and the speed of motion. From these measurements conclusions can be drawn on various parameters of the needle thread ().

Device for monitoring the needle thread

To determine the thread supply on a lower-thread bobbin (), holes () are arranged in the shape of a spiral in a flange () of the bobbin. Light from a light source (), which is directed towards the flange (), is reflected only by those holes (), behind which there is no longer any thread, so that the light beams () reach the rear flange () and can be reflected therefrom and received by the light receiver ().

Sewing or embroidery machine

Identification elements for identifying the size, shape, and kind of embroidery frame ( ) are installed on the embroidery frame ( ) for a sewing or embroidery machine with an embroidery module ( ). Furthermore, at least one reference cam ( ) is provided on the embroidery frame ( ), and by means thereof the precise position of the embroidery frame ( ) relative to the embroidery module ( ), and thus also relative to the needle ( ), can be derived. By a comparison of the actual position of the embroidery frame ( ) with the desired position, a fault can be detected and a new positioning of the embroidery frame ( ) can be performed in the case, for example, that switching steps of the drive element in the embroidery module ( ) have been lost.

Device for controlling the transverse movement of at least one thread in

Warp knitting machine, particularly galloon crocheting machine

Two rods are provided which are reciprocal between two end positions cooperating with two flexible retaining members, an electromagnet is located between the retaining members, the electromagnet includes a core having two flanged sections of different widths, an armature body each is mounted to the retaining members, the armature bodies are arranged such that they on the one hand abut flatly the border of the two flanged sections and such that on the other hand an air gap is provided between each armature body and the narrower of the flange sections, if the knife moves a rod toward its upper position the retaining member is deflected such to adjust the air gap prevailing between the narrower flange section of the electromagnet and the armature body to a predetermined value, and in operation this control means has two exactly defined control instances during which the deflection of the retained members proceed definitely toward the correct side regarding the function and the power consumption of the electromagnet is thereby extremely low and the heating thereof during operation is decreased.

Loom heald control means

A weft knitting machine includes a row of crochet needles and two rows of thread guides for guiding a respective basic warp thread or additional warp thread. Basic warp thread guides and additional warp thread guides are each attached to a carrier, of which one is fastened to a hollow rod and another to an inner rod arranged in this. Both the rods pivotable together about the same axis and displaceable along this axis independently of each other. The additional warp thread guides are moved in such a manner that each additional warp thread is laid alternately around one of two neighboring needles in the same direction of rotation. In this manner, a knitted article is formed which does not ravel on the tearing of a thread and which is produced on a machine equipped with crochet needles wherein the additional warp threads can also still form wale loops.

Growing community of inventors

Gipf-Oberfrik, Switzerland

Gerard A Durville