公开(公告)号：US3815530A

公开(公告)日：1974-06-11

申请号：US30240072

申请日：1972-10-31

申请人： DENTON M

发明人： DENTON M

IPC分类号： D05B35/10 ,  D05B27/10

CPC分类号： D05B35/10

摘要： A sewing machine for stitching leather or fabric sheet is provided with means for manually or automatically steering a work sheet past the sewing head to ensure that the line of stitching follows a required path, the steering being effected by imposing a local frictional drag on the sheet at a point offset from the line of action of the mechanical feed of the machine. The platen of the machine may be provided with a pair of domed studs which protrude upwardly one on each side of the feed line enabling the operator to press the work sheet down differentially on the studs with his fingers to effect a steering of the work by frictional drag. In another arrangement a yoke plate is rigidly or tiltably mounted on the presser bar of the machine and carries a pair of downwardly-protruding domed pressure studs which when pressed down differentially provide the required steering action. One of these pressure studs may be deeper than the other to act as an edge-follower for engaging a curved edge of the work sheet, whereby automatic steering of the work sheet is possible by which the seam will be stitched parallel to but inset from the edge being followed. Instead of cooperating with an edge of the work sheet itself, the edge-follower stud may follow an edge of a template or overlay placed on the work sheet, or an edge of a change in thickness or level in the work sheet, produced for example by a surface channel or the edge of an underlay. The invention may be applied to cutting, welding, finishing and other linear work as well as to stitching.

摘要翻译： 用于缝合皮革或织物片的缝纫机设置有用于手动或自动地将工作片转向通过缝纫头的装置，以确保缝合线遵循所需的路径，转向通过在片材上施加局部摩擦阻力来实现 在与机器的机械进给线的作用线偏离的点处。