公开(公告)号：US5000104A

公开(公告)日：1991-03-19

申请号：US406051

申请日：1989-09-12

申请人： Stephan Marbacher

发明人： Stephan Marbacher

IPC分类号： D05B29/08 ,  D05B37/06

CPC分类号： D05B37/06

摘要： A trimming pressure foot that can be interchangeably attached to a sewing machine includes one scissors blade fixedly attached to a pressure foot and one scissors blade pivotable about a shaft. The cutting motion is derived from the up-and-down motion of a needle drive rod. To this end, a pivot lever which is essentially in the shape of an inverted T is used. The pivot lever is pivotable about a shaft connected to the pressure foot, and its upwardly protruding arm rests with spring pressure on a needle securing screw. A flank of the arm resting on the screw forms an acute angle with the path of motion of the needle drive rod. In operation of the sewing machine, the up-and-down motion of the needle drive rod is converted into a pivoting motion of the pivot lever. The pivoting motion of the lever is transmitted onto the pivotable cutting blade by a tang secured to the pivot lever and by engaging the inside of a slit of the blade. The long needle drive rod stroke is thus elegantly and simply translated into a much shorter stroke of the trimming pressure foot.

摘要翻译： 可互换地连接到缝纫机的修剪压脚包括固定地连接到压脚的剪刀刀片和可围绕轴枢转的一个剪刀刀片。 切割运动源自针驱动杆的上下运动。 为此，使用基本上呈倒T形的枢轴杠杆。 枢转杆可围绕连接到压脚的轴线枢转，并且其向上突出的臂以弹簧压力固定在针固定螺钉上。 靠在螺丝上的臂的侧面与针驱动杆的运动路径形成锐角。 在缝纫机的操作中，针驱动杆的上下运动转换成枢转杆的枢转运动。 杠杆的枢转运动通过固定到枢转杆上的柄并通过接合叶片的狭缝的内部而传递到可枢转切割刀片上。 因此，长针驱动杆行程被优雅地简单地转换成修剪压力脚的短得多的行程。

公开(公告)号：US4121324A

公开(公告)日：1978-10-24

申请号：US806896

申请日：1977-06-15

申请人： Stephan Marbacher

发明人： Stephan Marbacher

IPC分类号： F16B2/08 ,  A41F1/00 ,  A44B11/25 ,  A45C3/00 ,  A45C13/10 ,  E05C19/16 ,  H01F7/02 ,  A44B21/00

CPC分类号： A44B11/2592 ,  A41F1/002 ,  A45C13/1069 ,  A44D2203/00 ,  Y10T24/32

摘要： A magnetic fastening device comprises a fixed fastening component having a cam and a recess therein which is at least partially bounded by magnetic material, and a movable fastening component provided with a magnet dimensioned to fit into said recess. The fixed fastening component is arranged to provide a slideway adapted to receive the movable fastening component, the dimensions of the slideway being so related to the dimensions of the movable component that, when the magnet of the movable component is disposed within the recess of the fixed component, the magnet may be lifted out of said recess and the movable component may thereafter be drawn out of the slideway, by depressing the movable component toward a seat portion of the fixed component.

摘要翻译： 磁性紧固装置包括固定紧固部件，其具有至少部分地由磁性材料界定的凸轮和凹部，以及设置有适合于所述凹部的磁体的可动紧固部件。 固定紧固部件布置成提供适于接收可移动紧固部件的滑道，滑道的尺寸与可移动部件的尺寸相关，当可移动部件的磁体设置在固定的紧固部件的凹部内时 可以将磁体从所述凹部中提出，然后通过将可移动部件朝向固定部件的座部分压下，将可动部件从滑道中拉出。