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81. 发明授权

US3832613A Sewing machine motor and control circuit 失效
标题翻译：缝纫机马达和控制电路
公开(公告)号：US3832613A
公开(公告)日：1974-08-27
申请号：US35987073
申请日：1973-05-14
申请人： UNION SPECIAL MACHINE CO
发明人： BERNSTEIN B , CRAWSHAW J , MC CURRY M
IPC分类号： D05B69/12 , D05B69/22 , D05B69/26 , H02K11/00 , H02K29/12 , H02P3/14 , H02P6/08 , H02P7/28 , H02P8/00 , H02K29/00
CPC分类号： H02K29/12 , D05B69/22 , H02P6/08
摘要： A solid state sewing machine drive system includes a brushless direct current motor, the speed of which is set and maintained by controlling the width of the field energization pulses. The motor is accelerated and maintained at a selected speed while operating in a closed loop mode, decelerated quickly to a stop by means of a dynamic brake, driven in an open loop stepping mode to a selected angular position, and then magnetically held in that position. Alternatively the motor may be decelerated to a predetermined low speed near stop by a dynamic brake and then driven in an open loop stepping mode to a predetermined angular position where it is held magnetically in that position. The motor includes fixed sensing inductors which sense the proximity of metallic segments rotating with the permanent magnet motor rotor for providing motor commutation signals and signals representing one possible stopping position of the rotor, and other sensing inductors which may be rotated relative to the motor field windings for providing signals representing another, angular positionable stopping position of the rotor. The circuit for supplying energization pulses to the motor field when operated in the open loop mode is provided with information regarding actual rotor position while the motor is decelerated so that when the stepping mode is actually begun, the rotor will continue to rotate in the same direction and will be synchronized with the rotating magnetic field.
摘要翻译：固态缝纫机驱动系统包括无刷直流电动机，其速度通过控制场通电脉冲的宽度而被设定和维持。电动机在闭环模式下运行时被加速并保持在选定的速度，通过动态制动器快速减速，以开环步进模式驱动到选定的角位置，然后磁力保持在该位置。或者，电动机可以通过动态制动被减速到预定的低速停止，然后以开环步进模式被驱动到预定的角位置，在预定的角位置处，电动机被磁力保持在该位置。电动机包括固定感测电感器，其感测与永磁电动机转子一起旋转的金属部分的接近，用于提供电动机换向信号和表示转子的一个可能的停止位置的信号，以及可相对于电动机励磁绕组旋转的其它感测电感器用于提供表示转子的另一个角度定位停止位置的信号。在开环模式下操作时，向电动机场供给通电脉冲的电路具有关于电动机减速时的实际转子位置的信息，因此当步进模式实际开始时，转子将沿相同方向继续旋转并将与旋转磁场同步。

82. 发明授权

US3812801A Pneumatic drive system for a sewing machine 失效
标题翻译：用于缝纫机的气动驱动系统
公开(公告)号：US3812801A
公开(公告)日：1974-05-28
申请号：US32516773
申请日：1973-01-19
申请人： LUKOWICZ N
发明人： LUKOWICZ N
IPC分类号： D05B69/22 , D05B3/00 , D05B69/08
CPC分类号： D05B69/22
摘要： A pneumatic drive system for controlling the stitching direction of a sewing machine including a base and having a needle bar with a sewing needle driven between uppermost and lowermost position by a motor connected to the sewing machine through a clutch comprising a main air supply, a clutch air control cylinder, a clevis assembly connecting between the clutch air control cylinder and the clutch a four-way air control valve, and various pneumatic lines interconnecting the clutch air control cylinder, the four-way air control valve and a main air regulator that connects to the main air supply, so that the sewing needle sews straight stitches as a foot pedal is depressed closing the various pneumatic lines between the main air supply and clutch air control cylinder and releasing the clutch. A brain member connects to the machine, and a jet sensor is attached to the brain member and has a structure defining a substantially Ushaped member having at least one opening in each arm through which air from the brain member flows. Various pneumatic lines and regulator valves interconnect with the main air regulator and are closed to the main air supply as a second pedal is depressed to send air to the brain member. A flag member breaks the flow of air through the openings in the arms which causes a number of flow control valves and booster valves interconnected by pneumatic lines to cause the base of the machine to oscillate and cause the sewing machine to reciprocate and sew zig-zag stitches.
摘要翻译：一种气动驱动系统，用于控制包括基座的缝纫机的缝合方向，并且具有针杆，缝纫针由最上位置和最下位置之间的缝纫针驱动，所述缝纫针由连接到缝纫机的马达通过离合器连接，所述离合器包括主空气源，离合器空气控制气缸，连接在离合器空气控制气缸和离合器四通空气调节阀之间的U形夹组件，以及将离合器空气控制气缸，四通空气调节阀和连接的主空气调节器的各种气动管线到主供气口，使得缝纫针缝制直线针脚，当脚踏板压下时，关闭主空气供应和离合器空气控制气缸之间的各种气动管线并释放离合器。大脑构件连接到机器，并且喷射传感器附接到脑部构件，并且具有限定基本上U形构件的结构，该构件具有在每个臂中的至少一个开口，来自脑构件的空气通过该开口流动。各种气动管线和调节阀与主空气调节器互连，并且当第二踏板被压下以将空气送到脑部构件时，与主空气供应关闭。标志构件通过臂中的开口破坏空气流，导致多个流量控制阀和增压阀通过气动管线互连，使机器的基座振荡，使缝纫机往复运动并缝制曲折针迹

83. 发明授权

US3804038A Sewing machine braking mechanism 失效
标题翻译：缝纫机制动机构
公开(公告)号：US3804038A
公开(公告)日：1974-04-16
申请号：US37072073
申请日：1973-06-18
申请人： PFAFF IND MASCH
发明人： MARTIN A , ALBRECHT E
IPC分类号： D05B19/00 , D05B69/22 , F16D59/00 , F16D71/00 , D05B69/20
CPC分类号： D05B69/22
摘要： A sewing machine comprises a main drive shaft which is driven through a clutch mechanism which includes a clutch disc having a stopping groove. The groove is engageable by a locking member of an operating lever. A centrifugal braking mechanism includes a weighted brake member which is supported around the shaft on a spring which biases the brake member to engage a fixed abutment of the housing surrounding the shaft. The brake member is held during rotation of the shaft by a holding collar which engages an outward extension of the brake member under the force of a biasing coil spring. The operating lever is held by a locking lever which may be released under the action of a control cam to permit displacement of the locking member out of the locking groove after the speed of the main shaft drops below a certain value. When the shaft does return below a predetermined speed, the weights move inwardly toward the shaft and they engage with the holding collar which is returned to an engagement position by its associated spring after the locking lever is moved to a position permitting the operating lever to move out of engagement with the clutch disc stop groove.
摘要翻译：一种缝纫机包括主驱动轴，其通过离合器机构驱动，所述离合器机构包括具有止动槽的离合器盘。槽可通过操作杆的锁定构件接合。离心式制动机构包括加权的制动构件，其在弹簧上围绕轴支撑，该弹簧偏压制动构件以接合围绕轴的壳体的固定邻接部。制动构件在轴的旋转期间通过保持套环保持，该保持套环在偏置螺旋弹簧的作用力下与制动构件的向外延伸部接合。操作杆由锁定杆保持，该锁定杆可在控制凸轮的作用下释放，以允许主轴的速度降低到一定值之后将锁定构件从锁定槽移出。当轴返回低于预定速度时，重物朝向轴向内移动，并且它们与保持套环接合，保持套环在锁定杆移动到允许操作杆移动的位置之后通过其相关弹簧返回到接合位置与离合器盘止动槽脱离啮合。

84. 发明授权

US3688713A Reciprocating motion control device 失效
标题翻译：再现运动控制装置
公开(公告)号：US3688713A
公开(公告)日：1972-09-05
申请号：US3688713D
申请日：1971-03-29
申请人： FARAH MFG CO INC
发明人： MCKEEN LEIGHTON R
IPC分类号： D05B69/22 , D05B69/30 , D05B55/14
CPC分类号： D05B69/22 , D05B69/30
摘要： A sewing machine having a rotary drive mechanism and a needle bar mounted for reciprocation between upper and lower positions with respect to a looper includes a transmission system operably connected between the rotary drive means and the needle bar to convert the rotary motion of the drive means to reciprocating motion of the needle bar. The transmission system includes a lever pivotally mounted intermediate its ends and pivotally connected at one end to the needle bar, a crank pivotally connected at one end to the rotary drive means, and a pitman pivotally connected between the crank and the other end of the lever to convert the rotary motion of the drive means and crank to reciprocating motion for oscillating the lever and reciprocating the needle bar. The crank is operatively connected to the looper for synchronously driving the looper with the needle bar. The transmission system also includes means for selectively maintaining the line of thrust of the pitman in a first position substantially perpendicular to the lever to transmit motion thereto from the drive means for reciprocating the needle bar and in a second position substantially in alignment with the lever whereby the pitman idles under the influence of the drive means without transmitting motion to the lever or the needle bar.
摘要翻译：一种具有旋转驱动机构和针杆的缝纫机，其安装成相对于弯针在上下位置之间往复运动，包括可操作地连接在旋转驱动装置和针杆之间的传动系统，以将驱动装置的旋转运动转换为针杆往复运动。传动系统包括杆，其枢转地安装在其端部的中间并且在一端枢转地连接到针杆，一端枢转地连接到旋转驱动装置的曲柄，以及枢轴连接在杆的曲柄和另一端之间的凹坑将驱动装置和曲柄的旋转运动转换成往复运动，以摆动杆并使针杆往复运动。曲柄可操作地连接到弯针，用于与针杆同步地驱动弯针。传动系统还包括用于选择性地将竖井员的推力线保持在大致垂直于杠杆的第一位置的装置，以便从驱动装置传递其运动，用于使针杆往复运动，并且在与杆大致对准的第二位置，由此驾驶员在驱动装置的影响下空转，而不会向杠杆或针杆传递运动。

85. 发明授权

US3647039A Apparatus for stopping a rotatably driven machine at a predetermined position 失效
标题翻译：用于在预定位置停止旋转驱动机器的装置
公开(公告)号：US3647039A
公开(公告)日：1972-03-07
申请号：US3647039D
申请日：1970-06-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： OKE SYOICHI , KOBAYASHI TAKANORI
IPC分类号： D05B69/22 , F16D71/02 , D05B69/26
CPC分类号： D05B69/22
摘要： A rotatably driven sewing machine is enabled to be stopped at a predetermined position through the use of a pilot generator which detects the speed of rotation of the machine and a position detecting device. The pilot generator includes a rotor and stator each of which have a plurality of magnetic poles. The position detecting device includes an auxiliary shaft which is connected directly to the main shaft of the machine and an annular segment thereon which includes an electrical conductor and insulating members. A plurality of brushes make contact with the annular segment and will contact the insulating members when the center of the magnetic poles of the rotor of the pilot generator are aligned with that of the stator.
摘要翻译：通过使用检测机器的旋转速度的引导发生器和位置检测装置，可旋转驱动的缝纫机能够停止在预定位置。导频发生器包括转子和定子，每个转子和定子具有多个磁极。位置检测装置包括直接连接到机器的主轴的辅助轴和包括电导体和绝缘构件的环形部分。当引导发生器的转子的磁极的中心与定子的转子的中心对准时，多个电刷与环形部分接触并且将接触绝缘部件。

86. 发明授权

US3602169A Automatic control and thread cutter for sewing machines 失效
公开(公告)号：US3602169A
公开(公告)日：1971-08-31
申请号：US3602169D
申请日：1969-09-11
申请人： REECE CORP
发明人： MILLER ROBERT F , MILLER ROY E
IPC分类号： D05B29/00 , D05B29/02 , D05B29/06 , D05B65/00 , D05B69/22
CPC分类号： D05B29/02 , D05B29/00 , D05B29/06 , D05B65/00 , D05B69/22 , D05D2207/02
摘要： The present attachment for sewing machines automatically positions the needle, raises and lowers the pressure foot, properly tensions the sewing thread, and severs said sewing thread and includes a control for starting, speeding up, slowing down, or stopping the operation of the sewing machine. The attachment also permits the operator thereof to put a plurality of stitches or single stitch at a time into the workpiece before automatically severing the thread therefrom and also provides means for automatically positioning the needle in its top position or lowermost position as well as means for stopping the sewing machine when the needle is in its up position opening said positioning means so that the operator can down position the needle and lift the pressure foot for turning the workpiece around the needle.

87. 发明授权

US3582986A Clutch motor 失效
标题翻译：离合器电机
公开(公告)号：US3582986A
公开(公告)日：1971-06-01
申请号：US3582986D
申请日：1969-05-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOKOYAMA MASAHIRO
IPC分类号： D05B69/12 , D05B69/22 , H02K7/10 , H02P3/04
CPC分类号： D05B69/22
摘要： A clutch motor for a sewing machine comprising a flywheel on the motor shaft and two concentric clutch wheels connected with one another through reducing gearing and alternatively engageable with the same face of the flywheel. One of the clutch wheels being on an output shaft which is thereby driven at a speed dependent on which clutch wheel is engaged. A lever arrangement makes it possible to stop the sewing machine selectively in different positions as desired.

88. 发明授权

US3564376A Time delay armshaft positioning control system for sewing machine 失效
标题翻译：时间延迟定位机缝纫机定位控制系统
公开(公告)号：US3564376A
公开(公告)日：1971-02-16
申请号：US3564376D
申请日：1968-10-24
申请人： SINGER CO
发明人： MAIS JAMES W , NICHOLAYEFF GEORGE M , LEE DONNY V
IPC分类号： D05B69/22
CPC分类号： D05B69/22
摘要： A CIRCUIT IS DISCLOSED FOR AUTOMATICALLY, DRIVING A SEWING MACHINE TO A PREDETERMINED POSITION OF THE ARMSHAFT RESPONSIVELY TO THE NORMAL RELAXATION OF THE FOOT CONTROLLER. TWO SILICOAN CONTROLLED RECTIFIERS (SCR''S) ARE EMPLOYED. ONE SCR CONTROLS THE RANGE OF MOTOR SPEEDS BY VARIABLE GATE VOLTAGES SUPPLIED THERETO BY A FOOT CONTROLLER-ACTUATED RESISTANCE. A SWITCH SUPPLYING A.C. LINE VOLTAGE TO THE SPEED CONTROL CURCUIT IS NORMALLY OPEN IN THE RELAXED POSITION OF THE CONTROLLER BUT IS CLOSED RESPONSIVELY TO INITIAL ACTUATION OF THE CONTROLLER. THIS SWITCH IS CONNECTED IN SHUNT WITH THE ANODE-CATHODE CIRCUIT OF A SECOND SCR WHICH MAY BE MAINTAINED CONDUCTIVE ONLY FOR A PREDETERMINED TIME AFTER THE SWITCH IS OPENED. THIS CONDUCTIVE TIME IS ESTABLISHED BY A TIMING CAPACITOR WHICH IS CHARGED THROUGH A DIODE ONLY WHEN THE SWITCH IS CLOSED, AND IS DISCHARGED INTO THE GATE OF THE SECOND SCR WHEN THE SWITCH IS OPENED. A NORMALLYOPEN REED SWITCH IS POSITIONED TO BE INFLUENCED BY A SMALL PERMANENT MAGNET MOUNTED ON THE HANDWHEEL WHICH IS COUPLED TO THE ARMSHAFT AND CLOSURE OF THIS SWITCH IS THUS EFFECTED IN A PREDETERMINED POSITION OF THE HANDWHEEL. THE REED SWITCH IS CONNECTED ACROSS THE GATECATHODE CIRCUIT OF THE SECOND SCR AND, WHEN CLOSED, REMOVES THE GATE VOLTAGE TO TURN OFF THE SCR AND STOP THE MOTOR. THE RELAXED POSITION OF THE FOOT CONTROLLER PROVIDES A MINIMUM RESISTANCE FOR ESTABLISHING A FIXED LOWSPEED HIGH-TORQUE POSITIONING DRIVE FOR THE MOTOR. THE TIMING CAPACITOR IS CHOSEN WITH RESPECT TO ITS DISCHARGE RESISTANCE TO PROVIDE A LIMITED CONDUCTIVE TIME FOR THE SECOND SCR AT LEAST LONG ENOUGH TO ALLOW THE LOW-SPEED DRIVE TO FIND THE DESIRED STOP POSITION OF THE ARMSHAFT AFTER WHICH THE SECOND SCR IS RENDERED INOPERATIVE BECAUSE THE CAPACITOR HAS DISCHARGED BELOW THE FIRING VOLTAGE. THUS THE HANDWHEEL CAN BE READILY ROTATED MANUALLY TO REPOSITION THE ARMSHAFT WITHOUT DANGER OF INTERFERENCE FORM THE POSITIONING DRIVE WHICH HAS BEEN RENDERED INOPERATIVE UNTIL THE NEXT ACTUATION OF THE FOOT CONTROLLER.

89. 发明授权

US3538871A Sewing machine needle positioner 失效
标题翻译：缝纫机针脚定位器
公开(公告)号：US3538871A
公开(公告)日：1970-11-10
申请号：US3538871D
申请日：1969-06-11
申请人： TRILLI PAUL C
发明人： TRILLI PAUL C
IPC分类号： D05B69/22
CPC分类号： D05B69/22

90. 发明授权

US3534845A Structure for stopping a machine in a given position 失效
标题翻译：在停止位置的机器的结构
公开(公告)号：US3534845A
公开(公告)日：1970-10-20
申请号：US3534845D
申请日：1967-11-08
申请人： CHUDNER JOSEPH
发明人： CHUDNER JOSEPH
IPC分类号： D05B69/22 , F16D71/00 , D05B69/00
CPC分类号： D05B69/22

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