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公开(公告)号：JPH04292192A
公开(公告)日：1992-10-16
申请号：JP31496091
申请日：1991-11-28
Applicant: MEFINA SA
Inventor： ANTONIO HIMENNESU , PATORISU DOUPURANTO
Abstract: PURPOSE: To provide a reliable and inexpensive sewing machine by pulling out a metallic piece rather than mechanically working a solid block by considering the mutually complicated shape of a slide way. CONSTITUTION: A first driving mechanism 22 has a driving shaft 3 and a driving device 8 and the opposite end parts of the two are kinematically connected to the shaft 3 by two connecting rods and a lever transmission. One of them demarcates a first moving orbit in a direction parallel with the supporting surface of a cloth and the other demarcates a second moving orbit in a direction vertical to this surface. An adjuster used therefore is provided with a slide way 20 in the shape of a circular arc in a center of the orbit plotted by a link 12 between the connecting rods of mechanism 22. The slide way 20 is mounted in the state of being freely rockable around the shaft 3 passing through an orbit and a tracer means is engaged with the slide way 20 and integrated with the shaft 3.
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公开(公告)号：JPH04272789A
公开(公告)日：1992-09-29
申请号：JP31623691
申请日：1991-11-29
Applicant: MEFINA SA
Inventor： ANTONIO HIMENNESU , PATORISU DOUPURANTO , MITSUSHIERU KONBEPAN
Abstract: PURPOSE: To improve the rationality of the manufacture and assembling of kinds of elements incorporating the lower arm of a sewing machine. CONSTITUTION: This sewing machine is provided with a frame body formed of the rigid U-shaped frame 2 of a shell 1a. A bobbin 16, bobbin driving mechanism 17, 19, 10 and a material feeding drive mechanism are housed and supported in a case 6 being an intermediate supporter. The case 6 is fixed to a step motor 11 controlling the feeding width and direction of material to be sewn. The motor 11 is fixed to the frame 2 by a sleeve 23 engaged with the inside of the lower arm of the frame 2.
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公开(公告)号：JPH04266609A
公开(公告)日：1992-09-22
申请号：JP31464491
申请日：1991-11-28
Applicant: MEFINA SA
Inventor： ANTONIO HIMENNESU , PATORISU DOUPURANTO
Abstract: PURPOSE: To make two levers pivotable without a play, related to a device for pivotable linkage between the two levers. CONSTITUTION: One end of a lever 2b has a fork that receives a lever 5b between its crotched part 6a, 6b. Each of the crotched part 6a, 6b has a recess 9 made on its inner face. The recess 9 is parallel to the inner face and extends in the longitudinal direction of the crotched part, thus forming a passage for receiving a pivot 10. The end of the lever 5b has a lateral recess 11 intended to engage the pivot 10. One end of a draw spring 13 has one end secured to the lever 2b, while the other end is fixed in a groove 12 that is concentric with the axis of the pivot 10 and that is made at the end of the lever 5b opposite to the opening of the recess 11.
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