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1. 发明授权

US4467738A Detachable drive for sewing machine trimming knife 失效
标题翻译：可拆卸驱动缝纫机修边刀
公开(公告)号：US4467738A
公开(公告)日：1984-08-28
申请号：US435498
申请日：1982-10-20
申请人： Karl-Heinz Walther , Kurt Vollmar , Albert Dusch
发明人： Karl-Heinz Walther , Kurt Vollmar , Albert Dusch
IPC分类号： D05B37/06 , D05B65/00 , D05B73/12 , D05B37/04
CPC分类号： D05B37/063 , D05B37/06 , D05B73/12 , D05D2207/02
摘要： A sewing machine comprises a rotatable main shaft which drives a needle upwardly and downwardly over a sewing station to sew through material which is moved thereover and which includes a trimming knife mounted adjacent the needle for upward and downward movement for selectively and periodically cutting the material. The trimming knife is driven by a linkage mechanism from an eccentric drive and the eccentric drive is detachably connected between the main shaft and the linkage mechanism and permits the knife to be driven with the mainshaft of the sewing machine or by an independent drive through a separate detachable drive mechanism. In one embodiment a positioning motor is connected to the drive through a hand wheel and an engageable and disengageable clutch so that it may drive a linkage mechanism including an eccentric to move the knife upwardly and downwardly for cutting the material being sewn during the operation of the sewing machine or separately when the sewing machine drive is discontinued. The drive is defined from the positioning motor to the hand wheel and through a clutch to the main shaft of the sewing machine which drives an eccentric for operating the linkage mechanism to reciprocate the knife. Another embodiment includes a separate trimming drive including two free wheel clutch arrangements permitting the knife to be driven synchronously with the sewing machine needle drive as well as its separate drive.
摘要翻译：一种缝纫机包括一个可旋转的主轴，其将针头向上和向下驱动在缝合台上以缝合通过其上移动的材料，并且包括邻近针安装的修剪刀，用于上下移动以选择性地和周期性地切割材料。修剪刀由偏心驱动器的联动机构驱动，偏心驱动器可拆卸地连接在主轴和连杆机构之间，并允许刀用缝纫机的主轴驱动或通过独立的驱动通过单独的可拆卸驱动机构。在一个实施例中，定位电动机通过手轮和可接合和可分离的离合器连接到驱动器，使得其可以驱动包括偏心件的连杆机构以向上和向下移动刀具，以在切割正在缝合的材料期间切割正在缝合的材料缝纫机或缝纫机驱动器停止时分开。驱动器由定位电动机定义为手轮，并通过离合器到缝纫机的主轴，该离合器驱动用于操作连杆机构的偏心件以使刀具往复运动。另一个实施例包括单独的修整驱动器，其包括允许刀与缝纫机针驱动器同步驱动的两个自由轮离合器装置以及其单独驱动。

2. 发明授权

US4476795A Reversible feed mechanism for sewing machines 失效
标题翻译：缝纫机可逆进给机构
公开(公告)号：US4476795A
公开(公告)日：1984-10-16
申请号：US473143
申请日：1983-03-07
申请人： Kurt Vollmar
发明人： Kurt Vollmar
IPC分类号： D05B27/22
CPC分类号： D05B27/22
摘要： A setting mechanism for the feed dog of a sewing machine having a setting member secured to a setting shaft for determining the amount and direction of the feed movement for the feed dog, comprises a reversal lever which is pivotable between two end positions and biased into one of the end positions by a return spring. To be able to vary the setting torque by which the return spring opposes the setting motion of the reversal lever, the other end of the return spring is connected to the reversal lever through a linkage. This linkage includes an end member having its pivotal axis coaxial with the setting shaft. The torque of the return spring, which normally increases with the progressing pivoting of the reversal lever may be reduced by a linkage design wherein the torque acting on the reversal lever through this linkage reverses within the actuating range of the lever.
摘要翻译：一种用于缝纫机的进给狗的设置机构，其具有固定到用于确定进给狗的进给运动的量和方向的设定轴的设定构件，包括可在两个端部位置之间枢转并被偏置成一个的反转杆的返回弹簧的最终位置。为了能够改变复位弹簧与反转杆的设定运动相反的设定扭矩，复位弹簧的另一端通过连杆与反转杆连接。该连杆机构包括具有与安装轴同轴的枢转轴线的端部部件。返回弹簧的扭矩通常随着反转杆的进行转动而增加，可以通过联动设计来减小，其中通过该连杆作用在反转杆上的扭矩在杆的致动范围内反转。

3. 发明授权

US4384540A Sewing machine having a cutting device 失效
标题翻译：缝纫机具有切割装置
公开(公告)号：US4384540A
公开(公告)日：1983-05-24
申请号：US310982
申请日：1981-10-13
申请人： Kurt Vollmar , Karl H. Walther
发明人： Kurt Vollmar , Karl H. Walther
IPC分类号： D05B37/06
CPC分类号： D05B37/06
摘要： A sewing machine has a work bearing surface in a substantially horizontal plane and a cutting device for the work including a bottom knife disposed in the horizontal plane of the work bearing surface and a top knife movable in the vertical direction. The cutting device has a toggle lever transmission drive comprising two articulatedly connected connecting rods, the joint of which is connected with a drive element. One of the two connecting rods is connected, at an outer joint thread with the top knife.
摘要翻译：缝纫机具有基本上水平的工作轴承表面和用于工件的切割装置，包括设置在工作轴承表面的水平面中的底部刀片和可在垂直方向上移动的顶部刀片。切割装置具有肘节杆传动驱动器，其包括两个铰接连接的连接杆，其连接件与驱动元件连接。两个连杆中的一个在与顶刀的外接头螺纹处连接。

4. 发明授权

US4487145A Presser foot drive linkage in a sewing machine 失效
标题翻译：压脚机联动在缝纫机
公开(公告)号：US4487145A
公开(公告)日：1984-12-11
申请号：US404335
申请日：1982-07-30
申请人： Kurt Vollmar
发明人： Kurt Vollmar
IPC分类号： D05B29/00 , D05B27/04 , D05B29/02
CPC分类号： D05B29/00
摘要： A sewing machine includes a presser foot which is driven on a main shaft by an eccentric drive which drives through a toggle mechanism to a crank lever driver which effects the raising of the presser foot synchronously with the upward movement of a sewing machine needle so as to release a workpiece for movement relative to the needle. The presser foot is biased downwardly by a spring which may be adjusted as to its tension. During a sewing operation a driver is moved to a position only slightly disengaged from the lifting surface of the presser foot and during periods of engagement of the presser foot with the workpiece the toggle mechanism ensures that the presser foot engages the workpiece gently, irrespective of the adjusted amount of total lift of the presser foot by the drive mechanism.
摘要翻译：一种缝纫机包括：压脚，该压脚通过偏心驱动器驱动，该偏心驱动器通过肘节机构驱动到曲柄杆驱动器，其与缝纫机针的向上运动同步地升高压脚，从而释放相对于针运动的工件。压脚由弹簧向下偏压，该弹簧可以根据其张力进行调节。在缝纫操作期间，驾驶员被移动到仅与压脚的提升表面略微脱离的位置，并且在压脚与工件接合期间，肘节机构确保压脚与工件轻轻接合，而与通过驱动机构调节压脚总升力的调整量。

5. 发明授权

US4476796A Upper cloth feed in a sewing machine 失效
标题翻译：上布在缝纫机上进给
公开(公告)号：US4476796A
公开(公告)日：1984-10-16
申请号：US374514
申请日：1982-05-03
申请人： Kurt Vollmar
发明人： Kurt Vollmar
IPC分类号： D05B27/04
CPC分类号： D05B27/04
摘要： An upper cloth feed in a sewing machine comprises a presser foot and an upper cloth feed foot, each connected over a linkage with a feeding and lifting drive. The drive is connected over a connecting member with a substantially vertically moving carrier for the presser foot. A spring acts on the connecting member, and an idle stroke connection is provided inside the lifting drive. For the adjustable distribution of the pressure force on the two sewing feet, the force of the spring acting on the substantially horizontally moving connecting member is variable. In order to obtain a simple constructional design, the spring presses over a pressure rod on a pressure piece mounted for displacement on the connecting member.
摘要翻译：缝纫机中的上布料包括一个压脚和一个上布进料脚，每一个都通过一个与进料和提升驱动的联动装置连接起来。驱动器通过连接构件与用于压脚的基本垂直移动的载体连接。弹簧作用在连接构件上，并且提升驱动装置内设置怠速行程连接。为了可调节两个缝纫脚上的压力分布，作用在基本水平移动的连接构件上的弹簧的力是可变的。为了获得简单的结构设计，弹簧将压力杆压在安装在连接构件上的位移的压力片上。

6. 发明授权

US4508043A Presser foot device on a sewing machine 失效
标题翻译：压脚装置在缝纫机上
公开(公告)号：US4508043A
公开(公告)日：1985-04-02
申请号：US550194
申请日：1983-11-09
申请人： Kurt Vollmar
发明人： Kurt Vollmar
IPC分类号： D05B29/02 , D05B29/00
CPC分类号： D05B29/00
摘要： A presser foot device on a sewing machine has a swingingly driven foot which can be shifted by two compressed air cylinders and piston combination and a spring mechanism into an inoperative position and, for adaptation to different work thicknesses, into a plurality of operating ranges, each with a different height position but constant amplitude of oscillation.
摘要翻译：缝纫机上的压脚装置具有摆动驱动的脚，其能够被两个压缩气缸和活塞组合以及弹簧机构移动到不工作位置，并且为了适应不同的工作厚度，每个操作范围分别具有不同的高度位置，但振幅恒定。

7. 发明授权

US4455957A Thread cutter for a zig-zag sewing machine 失效
标题翻译：一种锯齿缝纫机的螺纹切割机
公开(公告)号：US4455957A
公开(公告)日：1984-06-26
申请号：US386305
申请日：1982-06-08
申请人： Kurt Vollmar
发明人： Kurt Vollmar
IPC分类号： D05B65/02 , D05B65/00
CPC分类号： D05B65/00 , D05D2207/02
摘要： A thread cutter for a zig-zag sewing machine which has a needle which swings transversely to the material feed direction to form a zig-zag seam of predetermined width while the needle is reciprocated to pierce material to be sewn in cooperation with a revolving looper as the material being sewn is moved transverse to the swing direction and includes a cutting knife which cooperates with a movable catcher which is moved in time relationship to the rotation of the looper. The catcher is a plate-like member having an end terminating in the tip and a lateral edge on each side of the tip with one lateral edge having a first barb for engaging one leg of the needle thread loop and an opposite lateral edge having a second barb for engaging another leg of the needle thread loop, the one leading directly to the needle. The catcher is movable with the engaged thread portions into association with the knife to sever the threads so as to obtain a free length of thread ends independent of the piercing position of the needle. The second barb is advantageously staggered relative to the first barb by an amount which is less than the maximum width of the zig zag seam. The thread guide surface is provided next to the second barb which extends toward the catcher tip. The thread catcher may also have a third barb on the same side as the second barb which is provided for each half of the overstitch range for the leg of the thread which leads directly to the needle. The spacing between the barbs are equal to the maximum width of the zig-zag seam.
摘要翻译：一种用于锯齿缝纫机的螺纹切割机，其具有横向于材料进给方向摆动的针，以形成具有预定宽度的锯齿形缝，当针与旋转打针机一起作往复运动以刺穿要缝合的材料时被缝合的材料横向于摆动方向移动，并且包括切割刀，该切割刀与与活套的旋转时间关系地移动的可移动捕获器配合。捕获器是具有端部终止于尖端的端部的板状构件和在尖端的每一侧上的侧向边缘，其一个侧边缘具有用于接合针线环的一个腿部的第一倒钩和相对的侧边缘，其具有第二用于接合针线圈的另一条腿的倒钩，直线穿过针头。捕获器可移动，其中接合的螺纹部分与刀相关联以切断螺纹，以便获得独立于针的穿刺位置的螺纹端部的自由长度。第二倒钩相对于第一倒钩有利地交错一个小于之字形缝的最大宽度的量。线引导表面设置在第二倒钩旁边，朝向捕集器尖端延伸。线捕获器还可以在与第二倒钩相同的一侧具有第三倒钩，该第二倒刺针对直接引导到针的线的腿部的线圈范围的每一半设置。倒钩之间的间距等于曲折缝的最大宽度。

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