Aktiengesellschaft Adolph Saurer

Aktiengesellschaft Adolf Saurer

Kurt Huber

Hans Wallimann

Georg Comploi

Wilhelm Hutter

Arthur Loacker

Roland Heimgartner

Artur Loacker

Armin Kobler

Gabriella F Viniczay

Gabriella Fuchs-Viniczay

Willi Hutter

A relatively great number of embroidering locations with the appropriate embroidering implements are arranged in at least one row. The embroidering implements are capable of being coupled to and uncoupled from the embroidering implement drive of the embroidering machine according to a predetermined repetition and color-change program by electromagnetic actuation devices. Therefore, according to the invention, a so-called group-switching of the embroidering locations, respectively of their electromagnets, is performed such that groups of a few embroidering locations, respectively their electromagnetic actuation devices, form switching groups or units. The electromagnetic actuation devices of each switching unit are connected in parallel at their input sides. An input conductor common to the switching unit connects them to the embroidering location control device. A number of output conductors corresponding to the number of electromagnetic actuation devices per switching unit connects the individual electromagnetic actuation devices at their output sides in series with the embroidering location control device. A minimum of electrical conductors and a very rapid switching of all switching groups is attained with a minimum of power consumption by these measures and by an optimum choice of the number of grouped embroidering locations, in this case for instance four per switching unit.

Embroidering machine

The needle thread-break monitor for embroidery machines comprises a double-armed rocking lever acting as a switch in an electrical circuit of an alarm system. The rocking lever is mounted on a bearing shaft forming one pole or terminal of the switch. The other pole or terminal of the switch is formed by a limit or abutment shaft arranged substantially vertically above and extending substantially parallel to the bearing shaft. The arm of the rocking lever not having a thread guide cooperates with the limit shaft, which carries a sleeve of electrically insulating material forming a stop limiting the open position of the switch. The arm of the rocking lever having a thread guide cooperates with the sleeve. The sleeve is rotatable between a terminal or limit position on the terminal or limit shaft enabling electrical contact and another limit position inhibiting electrical contact. The sleeve serves as a support for a needle thread in the relaxed or non-tensioned state. These measures permit the design of a simple yet reliable needle thread-break monitor which fulfills all requirements.

Needle thread-break monitor for embroidery machines

A relatively great number of embroidering locations with the appropriate embroidering implements are arranged in at least one row. The embroidering implements are capable of being coupled to and uncoupled from the embroidering implement drive of the embroidering machine according to a predetermined repetition and color-change program by electromagnetic actuation devices. The pattern and machine-function control of the embroidering machine is performed via a data carrier whose reading and evaluation unit controls a pattern and machine-function control device. Data for the repetition and color-change program are also placed on this data carrier for pattern and machine-function control. Suitable further data are also placed on this data carrier for actuating a switch associated with the reading and evaluation unit for transmitting the repetition and color-change program to an embroidering location control device connected to the electromagnetic actuation devices of the embroidering implements. The employment of the same data carrier hitherto employed for pattern and machine-function control also for the repetition and color-change programs, has the great advantage that all devices for introducing or correcting data on the data carrier, for reading such data and for archiving the data carriers can be retained and that there can be used a relatively uncomplicated design for the control switch and the embroidering location control device.

A positioning device for a mechanical switching lever arrangement in an embroidery machine comprises an electromagnetic device which serves for displacing a pawl lever between a first end position and an intermediate position. The pawl lever serves for actuating a switching lever arrangement. The positioning device further comprises a mechanical amplifier device for displacing the pawl lever between the aforementioned intermediate position and a second end position. At its free end region the pawl lever carries a permanent magnet which continuously adheres to the electromagnet when the same is deenergized. The mechanical amplifier device, which cooperates with the pawl lever, comprises an externally actuatable switching lever arrangement. By pivoting this switching lever arrangement the pawl lever can be displaced from its intermediate position to the second end position and vice versa. In this way there can be initiated, at first, a displacement operation, by means of a relatively small arrangement of magnets, whereupon the actual positioning or adjustment work is carried out exclusively by means of the mechanical amplifier.

Electromagnetic pattern selector for an embroidery machine

At an embroidery machine there are mounted and displaceably guided two rows of embroidering implement rods which can be connected so as to be operatively coupled or decoupled in accordance with a desired program to a related one of two operatively associated oscillating drive rails. The embroidering implement rods which are related to the same embroidery location or position and which are, for instance, arranged in superimposed relation, can be simultaneously coupled to or decoupled from the operatively associated drive rail by means of a common switching lever. This switching lever can be actuated either directly or manually by means of adjustment levers and automatically by means of an electromagnetic device. This individual switching of all implements of an embroidery location enables easily adjusting any desired combination of working and inactive embroidery locations.

Embroidery machine pattern mechanism

A weft or filling thread monitor comprises a wire-shaped feeler pin which is pivoted by a thread, against the action of spring force, in the region of a measuring field. The measuring field encompasses a light-emitting diode and a photocell and enables generating, in a contactless manner by the feeler pin, an electrical control signal which is related to the monitored thread. This control signal is infed to a first input of a gate switching stage, at the second input of which there is applied a machine-controlled reference signal. In the absence of the control signal there appears at the output a work signal suitable for shutdown of the machine. Due to these measures such thread monitoring apparatus, working with contactless signal triggering, can fulfil all of the requirements placed thereon.

Thread monitoring apparatus for textile machines

An apertured disk which is mounted on a shaft in a loom causes a first photocell to transmit a first signal once during each revolution of the shaft in a preselected angular position of the shaft, and a second photocell to transmit a second signal in response to each incremental angular displacement of the shaft through one degree. A counter is reset to zero in response to reception of each first signal, and the counter thereupon counts the second signals until the shuttle of the loom causes the generation of a third signal which is generated when the shuttle reaches a predetermined portion of its path. The counter displays or otherwise indicates the number of second signals which are generated between the generation of a first signal and the generation of the next following third signal. The means for transmitting second signals to the counter is a logic circuit which begins to transmit second signals to the counter on reception of a first signal, and terminates the transmission of second signals to the counter on reception of the next-following third signal. The number of second signals which are stored in the counter when the shuttle causes the generation of a third signal denotes the extent of angular displacement of the shaft from its preselected angular position.

Apparatus for monitoring the motion of shuttles in looms or the like

The present invention relates to an optical-electrical system for monitoring filaments etc. of narrow, fine configuration by means of an optical sensor, which includes one light guide mounted between a light source and the region monitored in which the filament is disposed, and another light guide between the monitored region and a photodetector.

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Arbon, Switzerland

Kurt Huber