Fritz Gegauf Aktiengesellschaft Bernina-nahmaschinenfabrik

Bernina International Ag

Fritz Gegauf Aktiengesellschaft

F. Gegauf Ag Bernina Nahmaschinenfabrik

Heinz Janouschek

André Stucki

Niklaus Wacker

Hans Fluckiger

Hans Flückiger

Christian Ulmer

Lorenz Reber

A locking mechanism for a bobbin case () is provided with a locking lever () supported pivotally in the bobbin cover (). The locking lever is pivotal on a shaft (). A hook-shaped end () is formed at the locking lever (), which latches in the sleeve () in the hook and can hold the bobbin case () in the hook ().

Locking mechanism for a bobbin case

A hook () of a sewing machine () is pivotably mounted on a hook carrier (). The hook () is moved from a working position (X) into a bobbin case withdrawal position by a pivoting movement of the hook carrier (). The pivoting movement displaces the hook () and the bobbin case () towards or above the opening which is opened by the flap () in the lower arm (). In this way, the withdrawal of the bobbin case () or the bobbin is significantly simplified.

Sewing or embroidery machine

The hook () of a sewing machine () is mounted so that it can move on a hook carrier. Through a sliding movement of the hook carrier, the hook () is brought from its operating position into a bobbin case removal position. Through the sliding movement, the hook () with the bobbin case () is placed at or above the opening, which is created by the flap () in the lower arm (). In this way, the removal of the bobbin case () or the bobbin is made considerably easier.

A spool capsule for a sewing machine for receiving a lower thread spool, having a concentrically disposed bore for mounting the spool capsule on a spool carrier pin, with a spring, serving as a locking device for axially retaining the spool capsule on the spool carrier pin, being inserted into a spool receiving space of the spool capsule. A section of the spring is constructed so that it is elastically displaceable radially, relative to the concentrically disposed bore, penetrating the bore in a manner analogous to a tendon. The locking device includes only a single movable element, which serves for both arresting the spool capsule on the pin of the spool and as an actuating device. This single element includes a spring, which is retained in a centrally-extending groove in a deepening of the spool capsule, and projects outwardly, at one point, through an opening in the surface of the spool capsule. The spring, preferably, has a round wire, which first extends through a multiple bending along the periphery of the central groove of the spool capsule and, then, in one section, tangentially traverses the bore in the spool capsule in order to subsequently exit though an opening partly beyond the surface of the spool capsule.

Spool capsule for a sewing machine

A presser foot for a sewing machine includes a presser foot with a shank. The end of the presser-foot shank is articulated with a presser-foot sole having a stitching opening for a needle, which is attached to a needle bar. The presser-foot sole is capable of being swung relative to an upper-part of a housing therefor about the axis of the needle. In a preferred embodiment, the presser foot of the invention, which is connected to the sewing machine in a manner so that it is capable of being swung at least 180.degree., makes it possible for the operator of the sewing machine to adjust the presser foot and/or the presser-foot sole so as to make it essentially parallel to the sewing direction and, in this fashion, to allow the sewing-over of thickenings, hemmed borders and the like.

Presser foot with swinging presser foot sole for a sewing machine

The presser-foot of the fabric presser device in a sewing machine is pivotable about an axis of a presser-bar in order to provide space in the stitching region of a needle in order to allow manipulations to be made to the needle. The fabric presser device is constructed such that the presser-foot can be pivoted or swung away from the region of the needle only when the needle and the presser-bar are in a raised or elevated position.

Laterally swingable sewing machine presser device

A hem forming means comprising a guide shoe suspended with limited movability on a spring clip directly in front of the needle hole of the machine. The spring clip, which is arranged at right angles to the conveying direction of the sewing material is attached to a ruler forming an edge abutment surface for the sewing material. In the zone of the edge abutment surface, the guide shoe is provided with a turndown nose which has, on the side facing away from the ruler, a lateral surface extending with broadening of the turndown nose at an acute angle with respect to the needle hole. This lateral surface extends at a spacing parallel to a beveled surface of the base plate, said beveled surface extending toward the needle center. The beveled surface constitutes one limitation of a wedge-shaped edge cutout of the base plate, into which the turndown nose of the guide shoe disposed thereabove can enter under spring pressure. The point of engagement of the spring clip at the guide shoe is, as seen from the ruler, outside of the wide center of the guide shoe, so that the contact pressure of the guide shoe sole is higher on the outside than in the zone of the contact surface of the ruler. In this way a flawless, straight guidance of the edge of the sewing material is obtained, making it possible to maintain an always constant small hem width, even in case of very fine sewing material.

Growing community of inventors

Steckborn, Switzerland

Heinz Janouschek