摘要:
A spark plug including a housing as a ground contact to an internal combustion engine, a center electrode situated in the housing along a center axis of the spark plug, an insulator between the center electrode and the housing, and a two-legged ground electrode whose legs are located on the combustion chamber side of the center electrode and angled with respect to one another in a leg plane which is perpendicular to the center axis, the two ends of the ground electrode being connected to the housing respectively by one connection point, a first gap between one end of the housing on the combustion chamber side and the leg plane being smaller than or equal to a second gap between one of the connection points and the center axis, and/or the ground electrode being tapered toward the center axis.
摘要:
A spark plug including a housing as a ground contact to an internal combustion engine, a center electrode situated in the housing along a center axis of the spark plug, an insulator between the center electrode and the housing, and a two-legged ground electrode whose legs are located on the combustion chamber side of the center electrode and angled with respect to one another in a leg plane which is perpendicular to the center axis, the two ends of the ground electrode being connected to the housing respectively by one connection point, a first gap between one end of the housing on the combustion chamber side and the leg plane being smaller than or equal to a second gap between one of the connection points and the center axis, and/or the ground electrode being tapered toward the center axis.
摘要:
A spark plug includes at least one ground electrode with a reduced temperature level. The spark plug encompasses a tubular metallic housing that has, at the combustion-chamber end, an outer rim on which at least one ground electrode is positioned. The cross-sectional area of the at least one ground electrode increases toward the outer rim of the housing.
摘要:
A spark plug includes an insulator situated in a housing, in which the insulator has a sealing surface which lies against a sealing surface of the housing or against a sealing element that is situated between the housing and the sealing surface of the insulator. An arrangement exerts a force on the insulator that is directed in the longitudinal direction of the spark plug in such a way that the sealing surface of the insulator presses upon the sealing surface of the housing or upon the sealing element, and thus the insulator in the housing is sealed in a gastight manner.
摘要:
A buttonhole sewing machine comprises a top arm (1) with a needle (6) movable in up and down reciprocation and a base plate (2). A buttonhole cutting device (13) is provided, having a knife (36) which is disposed on the base plate (2) and comprises a straight cutting edge (37) that extends in the y direction and an eye cutting edge (38). A cutting block (15) cooperates with the knife (36). The knife (36) and the cutting block (15) are motor-adjustable one in relation to the other in the y direction.
摘要:
A buttonhole sewing machine for the production of a group of at least two buttonholes of varying design and/or size comprises devices for the entry, storage and processing of information on the varying design and/or size of the group of buttonholes and a device for triggering the drives for the successive production of buttonholes on the workpiece.
摘要:
A sewing machine having a machine arm, a rest for the material being sewn and a device for producing buttonholes, which comprises a cutting knife and a plurality of cutting blocks of respectively different lengths which are arranged on a common carrier. The buttonhole device is acted upon by an actuating device that can be moved from an upper position into a lower position, the cutting knife is arranged in a stationary manner underneath the sewing material, and the cutting block is lowered by the actuating device onto the cutting knife.
摘要:
So as to sew a pocket-flap to a workpiece, the pocket-flap and a cut-out pocket are positioned relative to each other at a predetermined distance, in which they do not overlap, and relative to the workpiece. The workpiece, the cut-out pocket and the flap are conveyed to a sewing position without being displaced one in relation to the other. In the sewing position the cut-out pocket and the workpiece are joined together by means of a seam. The pocket-flap is then moved from a first position into a second position, in which it partially overlaps the cut-out pocket. It is then connected with the workpiece by a fastening seam.
摘要:
An automatic sewing machine having a folding device and a feeding device is designed in such a manner that the folding device is designed to be displaceable and lockable on a stand of the automatic sewing machine in a feeding direction relative to the sewing head. The purpose of these measures is to achieve a minimization of the cycle times. In adapting to the size of the workpieces to be sewn together, the position of the folding device relative to the sewing head can thus be reduced to a minimum.
摘要:
A machine for sewing together two workpiece parts having edges of equal or unequal length by using a bead seam, especially for joining together the edge of a vamp and the shorter edge of a plug of a true moccasin shoe, so that the length of the plug matches that of the longer edge of the vamp, in only one operation. The bead seam forming device essentially consists of an auxiliary folding and ruffling finger acting in front of the needle of the sewing machine and in synchronous driving connection with the needle; several machines are described which are provided with different bead seam forming devices.