Abstract: A furnace insulation including fiber modules in the form of at least two cylinder segments (2, 3; 7, 8) that are placed against one another so as to form a cylinder whose internal volume constitutes the furnace space and that are adapted to allow an electrical resistance element (5) to lie against and be fastened in the inner surface (4) of the cylinder. The furnace insulation is characterized in that the inner part of the cylinder includes one or more radially extending or generally radially extending openings (12; 14).

Abstract: A method and a device for cutting at least an upper thread of a sewing machine provided with a fabric clamping member (20), wherein a length of the thread consumed for a cut can be set within a predetermined interval. The method for cutting at least the upper thread (4) of a sewing machine (1) includes the steps: feeding a predetermined length x of said upper thread (4) utilizing a thread feeder (15), pulling out the upper thread (4) said predetermined length utilizing a displacement of said fabric clamping member (20) from a current position to a second position executing by means of a sewing machine processor (C) program sequences stored in a memory (M) for controlling a thread cutter (10) to perform a cut of at least said upper thread (4).

Abstract: A method is provided for embroidering embroidery elements by means of a processor-controlled sewing machine (1). The method includes: the fabric (2) that is to be embroidered is placed in the required position in relation to a threaded needle (5) on the sewing machine; a plurality of embroidery elements (A, B, C) in the form of software products having pre-programmed embroideries are provided; a group of said embroidery elements, defined as stitch data objects in a memory (M), is selected; an arbitrary curve (KU) along which said group of embroidery elements (A, B, C) shall be embroidered on said fabric (2) is defined by the operator of the sewing machine; said embroidery elements of said group are distributed in a spaced relationship along said curve utilizing a positioning algorithm. According to the method of the invention, a coupling between the embroidery elements of the group and the arbitrary curve is preserved during the full processing by said positioning algorithm.

Abstract: A sewing machine including a needle that is supplied with an upper thread. A a reciprocating movement carries the upper thread through a sewing material and forms a loop beneath the sewing material. A shuttle houses a bobbin for lower thread and a shuttle arm catches the loop of the upper thread and carries the upper thread around the lower bobbin, so that a stitch is executed on the sewing material. A thread feeder feeds the upper thread to the needle and a control element on each stitch causes the thread feeder at the beginning of a stitch to advance a predetermined length of upper thread, including an excess thread, and at the end of the stitch to correct the length of the upper thread by recovering the excess upper thread, or advancing the further upper thread required.

Abstract: A method and device for free-hand embroidering on a sewing material with a sewing machine which has a memory for stitch data for a sewing pattern and a processor for reading the stitch data and for causing the sewing machine to execute stitches according to stitch data, which sewing machine has a needle and a sewing material feeder for moving the sewing material in a direction, which processor controls movements according to the direction relative to the position of the needle for the execution of stitches according to the sewing pattern, and which method includes during use of the sewing machine in a free-hand mode: storage in the memory of stitch data for at least one stitch type for free-hand embroidering, choice of a stitch type, maneuvering, via first control signals, a movement of the sewing material feeder in any desired the direction by using a hand-operated control, detection of the first control signals in the processor, calculation in the processor, from the first control signals, of the direction

Abstract: Furnace insulation comprising fibre modules in the form of at least two cylinder segments (2, 3; 7, 8) that are placed against one another so as to form a cylinder whose internal volume constitutes the furnace space and that are adapted to allow an electrical resistance element (5) to lie against and be fastened in the inner surface (4) of the cylinder. The present invention is characterized in that the inner part of the cylinder includes one or more radially extending or generally radially extending openings (12; 14).

Abstract: A sewing machine including a needle being supplied with an upper thread, a loop taker which accommodates a bobbin for a bottom thread, and a drive unit, which forces the needle to perform a reciprocating movement. The needle, during its movement and in cooperation with the loop taker, executes a stitch on a sewing material being advanced between the upper thread and the bottom thread. A take-up lever, for each stitch, pulls tight a knot being formed in the sewing material by the upper thread and the bottom thread in cooperation. The sewing machine further includes a thread transfer member supplying the needle with an upper thread with either a thread portioner or a friction braking assembly for friction braking of the upper thread. A switch switches between thread supply with the thread portioner or with the friction braking assembly. A control unit controls the thread supply from the thread portioner or, alternatively, controls the friction braking assembly.

Abstract: A sewing machine including an upper thread supply to a needle, a loop taker accommodating a bobbin for a bottom thread, a drive unit which through coupling elements affects a number of mechanical elements, of which the needle is one of the mechanical elements, to perform synchronous cyclic movements between themselves, wherein the needle during its movement in cooperation with the loop taker performs stitches on a sewing material which is transported between upper thread and bottom thread, by means of a take-up lever which in each stitch pulls tight a knot, which is formed in the sewing material by the upper thread and the bottom thread in cooperation, wherein the sewing machine includes a sensor function that detects a deviation between a set value for a point of time at which a predetermined value for a tensile force in the upper thread is reached at pull tight of a knot and an actual value at the time of point where the predetermined value of the tensile force in the upper thread is reached at pull tight o

Abstract: A sewing machine including a needle that is supplied with an upper thread. A drive element drives the needle to perform a reciprocating movement in order to carry the upper thread through a sewing material that is advanced between the upper thread and the lower thread, so that the upper thread forms a loop beneath the sewing material. A shuttle houses a lower bobbin for the lower thread and a shuttle arm on the shuttle which catches in the loop of the upper thread and carries the upper thread around the lower bobbin, so that a stitch is executed on the sewing material. A thread tensioning and take-up lever on each stitch draws the loop tight so that a knot is formed in the sewing material by interaction of the upper thread and the lower thread.

Abstract: A sewing machine including an upper thread supply to a needle, a loop taker accommodating a bobbin for a bottom thread, a drive unit which through coupling elements affects a number of mechanical elements, of which the needle is one of the mechanical elements, to perform synchronous cyclic movements between themselves, wherein the needle during its movement in cooperation with the loop taker performs stitches on a sewing material which is transported between upper thread and bottom thread, by means of a take-up lever which in each stitch pulls tight a knot, which is formed in the sewing material by the upper thread and the bottom thread in cooperation, wherein the sewing machine includes a sensor function that detects a deviation between a set value for a point of time at which a predetermined value for a tensile force in the upper thread is reached at pull tight of a knot and an actual value at the time of point where the predetermined value of the tensile force in the upper thread is reached at pull tight o

Abstract: A sewing machine including a needle being supplied with an upper thread, a loop taker which accommodates a bobbin for a bottom thread. and a drive unit, which forces the needle to perform a reciprocating movement. The needle, during its movement and in cooperation with the loop taker, executes a stitch on a sewing material being advanced between the upper thread and the bottom thread. A take-up lever, for each stitch, pulls tight a knot being formed in the sewing material by the upper thread and the bottom thread in cooperation. The sewing machine further includes a thread transfer member supplying the needle with an upper thread with either a thread portioner or a friction braking assembly for friction braking of the upper thread. A switch switches between thread supply with the thread portioner or with the friction braking assembly. A control unit controls the thread supply from the thread portioner or, alternatively, controls the friction braking assembly.