Multiple pattern sewing machine

A multiple pattern sewing machine, a feed mechanism for feeding a cloth, a bight mechanism for swinging a sewing needle in a direction crossing the cloth feeding direction, means for controlling the displacement of said feed mechanism, means for controlling the displacement of said bight mechanism, means for generating a timing signal for each stitch in the pattern, means for generating a plurality of different reference voltages for controlling said feed mechanism, means for generating a plurality of different reference voltages for controlling said bight mechanism, said feed control reference voltage generating means and said bight control reference voltage generating means each including a voltage divider network formed by a series connection of a plurality of resistor components coupled to receive a predetermined voltage at both ends of said series connection, feed switching means each including a plurality of two serially connected switching devices for selectively coupling said plurality of feed reference voltages to said feed controlling means, bight switching means including a plurality of two serially connected switching devices for selectively coupling said plurality of bight reference voltages to said bight controlling means, pattern selecting means for selectively rendering conductive predetermined ones of said first serially connected switching devices, and counter means responsive to said timing signal for making a stepping operation for selectively rendering conductive said second serially connected switching devices of said feed switching means and said bight switching means for each stepping operation.

In a multiple pattern sewing machine

• a feed mechanism for feeding a cloth,
• a bight mechanism for swinging a sewing needle in the direction crossing the cloth feeding direction,
• means for controlling the displacement of said feed mechanism,
• means for controlling the displacement of said bight mechanism,
• means for generating a timing signal for each stitch in the pattern,
• means for generating a plurality of different reference voltages for controlling said feed mechanism,
• means for generating a plurality of different reference voltages for controlling said bight mechanism,
• feed switching means including a plurality of switching devices for selectively coupling said plurality of feed reference voltages to said feed controlling means,
• bight switching means including a plurality of switching devices for selectively coupling said plurality of bight reference voltages to said bight controlling means, and
• counter means responsive to said timing signal for making a stepping operation for selectively rendering conductive the switching devices of said feed switching means and said bight switching means for each stepping operation.

In a multiple pattern sewing machine, including a power source, a driving motor coupled to said power source for energization, a main shaft coupld to be driven by said driving motor, a sewing needle operatively coupled to said main shaft, a feed mechanism operatively coupled to said main shaft for feeding a cloth, a bight mechanism operatively coupled to said main shaft for swinging said sewing needle in the direction crossing the cloth feeding direction, means for controlling displacement of said feed mechanism, and means for controlling the displacement of said bight mechanism, control apparatus comprising:

• pattern selecting means for selecting a desired one of a plurality of patterns to be sewn;
• means operatively associated with the up and down movement of said sewing needle for generating a timing pulse;
• a plurality of feed control voltage generating means, one being associated with one of a plurality of patterns to be sewn and being responsive to said pattern selecting means to be selectively enabled for generating a plurality of different voltages for controlling said feed mechanism;
• a plurality of bight control reference voltage generating means, one being associated with one of a plurality of patterns to be sewn and being responsive to said pattern selecting means to be selectively enabled for generating a plurality of different reference voltages for controlling said bight mechanism;
• feed switching means including a plurality of switching devices for selectively coupling said plurality of feed reference voltages from said selected feed control reference voltage generating means to said feed displacement controlling means;
• bight switching means including a plurality of switching devices for selectively coupling said plurality of bight reference voltages from said selected bight control reference voltage generating means to said bight displacement controlling means;
• and
• counter means responsive to said timing signal for making a stepping operation for selectively rendering conductive the switching devices of said feed switching means and said bight switching means for each stepping operation.

In a multiple pattern sewing machine, including a power source, a driving motor coupled to said power source for energization, a main shaft coupled to be driven by said driving motor, a sewing needle operatively coupled to said main shaft, a feed mechanism operatively coupled to said main shaft for feeding a cloth, a bight mechanism operatively coupled to said main shaft for swinging said sewing needle in the direction crossing the cloth feeding direction, means for controlling displacement of said feed mechanism, and means for controlling the displacement of said bight mechanism control apparatus comprising:

• means operatively associated with the movement of said sewing needle for generating a timing signal;
• means common to said plurality of patterns to be sewn for generating a plurality of different reference voltages for controlling said feed mechanism;
• means common to said plurality of patterns to be sewn for generating a plurality of different reference voltages for controlling said bight mechanism;
• feed switching means including a plurality of switching devices for selectively coupling said plurality of feed reference voltages to said feed displacement controlling means;
• bight switching means including a plurality of switching devices for selectively coupling said plurality of bight reference voltages to said bight displacement controlling means;
• pattern selecting means for selecting a desired one of said plurality of patterns to be sewn, and
• counter means provided for each of said plurality of patterns to be sewn and responsive to said timing signal for making a stepping operation for selectively rendering conductive the switching devices of said feed switching means and said bight switching means for each stepping operation in association with the selected pattern to be sewn.

In a multiple pattern sewing machine,

• a feed mechanism for feeding a cloth,
• means for controlling the displacement of said feed mechanism,
• a bight mechanism for swinging said sewing needle in the direction crossing the cloth feeding direction,
• means for controlling the displacement of said bight mechanism,
• means for generating a timing signal for each stitch in the pattern,
• a feed resistor network including a series connection of a plurality of resistor elements adapted to be supplied with a voltage between both ends of said series connection,
• a bight resistor network including a series connection of a plurality of resistor elements adapted to be supplied with a voltage between both ends of said series connection,
• a matrix including a plurality of column lines and a plurality of sets of row lines, said number of sets of row lines corresponding to the number of reference voltages, the intersections between each column line and said row lines being selectively coupled in a logical product fashion in a step sequence in accordance with one of the multiple patterns,
• feed switching means including a plurality of switching devices adapted to be turned on respectively in response to the outputs of the corresponding sets of row lines of said matrix and selectively coupling the reference voltages of said feed resistor network to said feed controlling means,
• bight switching means including a plurality of switching devices adapted to be turned on respectively in response to the outputs of the corresponding sets of row lines of said matrix and selectively coupling the reference voltages of said bight resistor network to said bight controlling means, and
• counter means responsive to said timing signal for making a stepping operation for selectively and sequentially rendering conductive the sets of row lines in said matrix.