Pattern selection system for sewing machines

Claim 2

A sewing machine having stitch forming instrumentalities capable of producing successive stitches in a variety of different stitch patterns and including a needle, a mechanical actuator for imparting repetitive stitch forming cycles of operation to said stitch forming instrumentalities, an electromagnetically influenced actuator operatively connected to said stitch forming instrumentalities for controlling the stitch pattern produced thereby, memory storage means for data regulating the placement of each stitch in a stitch pattern and having the capacity for the storage of separate data relating to each of a plurality of different stitch patterns, operator influenced pattern selection means for rendering effective data stored in said memory storage means relating to any selected one of said plurality of different stitch patterns, a skip stitch mechanism for separating said mechanical actuator from said needle, and means responsive to the operation of said pattern selector means for operating said skip stitch mechanism for one stitch forming cycle of said sewing machine.

Claim 3

A sewing machine as set forth in claim 1 in which said operator influenced pattern selector means includes an electric circuit having a plurality of operator influenced switches, means connecting said switches in said circuit effective upon closure of each switch to render effective the data in said memory storage meanS relating to one of said different stitch patterns, an electromagnetically influenced skip stitch device actuator for said skip stitch device operating means, and connections in said electric circuit for energizing said electromagnetically influenced skip stitch actuator in response to closure of any one of said switches.

Claim 4

A sewing machine as set forth in claim 1 including means for inhibiting retrieval of data from said memory storage means during operation of said skip stitch mechanism in response to operation of said pattern selector means.

Claim 5

A sewing machine having stitch forming instrumentalities capable of producing successive stitches in a variety of different stitch patterns and including a needle and a loop taker, a mechanical actuator for imparting repetitive stitch forming cycles of operation to said stitch forming instrumentalities including endwise reciprocation of said needle into a position for needle thread loop seizure by said loop taker, an electromagnetically influenced actuator operatively connected to said stitch forming instrumentalities for controlling the stitch pattern produced thereby, memory storage means for data regulating the placement of each stitch in a stitch pattern and having the capacity for the storage of separate data relating to each of a plurality of different stitch patterns, operator influenced pattern selector means for rendering effective data stored in said memory storage means relating to any selected one of said plurality of different stitch patterns, means rendered effective by said mechanical actuator at a predetermined position of said mechanical actuator prior to each work penetration of said needle for extracting from said memory storage means data pertinent to the placement of the next succeeding stitch in said selected stitch pattern and for energizing said electromagnetically influenced actuator in accordance with said extracted data, a skip stitch mechanism for separating said mechanical actuator from said needle, and means responsive to operation of said pattern selector means during a predetermined interval after extraction of pattern information data from said memory storage means for operating said skip stitch mechanism for one stitch forming cycle of said sewing machine.

Claim 6

A sewing machine having stitch forming instrumentalities capable of producing successive stitches in a variety of different stitch patterns and including a needle and a loop taker, a mechanical actuator for imparting repetitive stitch forming cycles of operation to said stitch forming instrumentalities including endwise reciprocation of said needle into a position for needle thread loop seizure by said loop taker, an electromagnetically influenced actuator operatively connected to said stitch forming instrumentalities for controlling the stitch pattern produced thereby, memory storage means for data regulating the placement of each stitch in a stitch pattern and having the capacity for the storage of separate data relating to each of a plurality of different stitch patterns, operator influenced pattern selector means for rendering effective data stored in said memory storage means relating to any selected one of said plurality of different stitch patterns, means rendered effective by said mechanical actuator at a predetermined position of said mechanical actuator prior to each work penetration of said needle for extracting from said memory storage means data pertinent to the placement of the next succeeding stitch in said selected stitch pattern and for energizing said electromagnetically influenced actuator in accordance with said extracted data, a skip stitch mechanism for separating said mechanical actuator from said needle, and means responsive to operation of said pattern selector means during a predetermined interval after extraction of pattern information data from said memory storage means for operating said skip stitch mechanism for one stitch forming cycle of said sewing machine.

Claim 7

A sewing machine having stitch forming instrumentalities capable of concatenating thread into successive stitches in a variety of different stitch patterns, a mechanical actuator for imparting repetitive cycles of operation to said stitch forming instrumentalities each cycle including a position in which thread concatenation becomes irrevocable for the stitch then being formed, an electromagnetically influenced actuator operatively connected to said stitch forming instrumentalities for controlling the stitch pattern produced thereby, memory storage means for data regulating the placement of each stitch in a stitch pattern and having the capacity for the storage of separate data relating to each of a plurality of different stitch patterns, operator influenced pattern selector means for rendering effective data stored in said memory storage means relating to any selected one of said plurality of different stitch patterns, means rendered effective by said mechanical actuator at a predetermined position of said mechanical actuator prior to said position in which thread concatenation becomes irrevocable for extracting from said memory storage means data pertinent to the placement of the next succeeding stitch in said selected stitch pattern and for energizing said electromagnetically influenced actuator in accordance with said extracted data, a skip stitch mechanism for separating said mechanical actuator from said needle, and means responsive to operation of said pattern selector means for a predetermined interval after extraction of said pattern information data from said memory storage means for operating said skip stitch mechanism for one stitch forming cycle of said sewing machine.

Claim 8

A sewing machine having stitch forming instrumentalities capable of concatenating thread into successive stitches in a variety of different stitch patterns, a mechanical actuator for imparting repetitive cycles of operation to said stitch forming instrumentalities each cycle including a position in which thread concatenation becomes irrevocable for the stitch then being formed, an electromagnetically influenced actuator operatively connected to said stitch forming instrumentalities for controlling the stitch pattern produced thereby, memory storage means for data regulating the placement of each stitch in a stitch pattern and having the capacity for the storage of separate data relating to each of a plurality of different stitch patterns, operator influenced pattern selector means for rendering effective data stored in said memory storage means relating to any selected one of said plurality of different stitch patterns, means rendered effective by said mechanical actuator at a predetermined position of said mechanical actuator prior to said position in which thread concatenation becomes irrevocable for extracting from said memory storage means data pertinent to the placement of the next succeeding stitch in said selected stitch pattern and for energizing said electromagnetically influenced actuator in accordance with said extracted data, a skip stitch mechanism for separating said mechanical actuator from said needle, and means responsive to operation of said pattern selector means for a predetermined interval after extraction of said pattern information data from said memory storage means for operating said skip stitch mechanism for one stitch forming cycle of said sewing machine.

Claim 9

A sewing machine as set forth in claim 5 in wHich said operator influenced pattern selector means includes an electric circuit having a plurality of operator influenced switches, means connecting said switches in said circuit effective upon closing of each switch to render effective the data in said memory storage means relating to one of said different stitch patterns, an electromagnetically influenced skip stitch device actuator for said skip stitch device operating means, connections in said electric circuit for energizing said electromagnetically influenced skip stitch device actuator in response to closure of any one of said switches, gate means in said last mentioned connections, and means for opening said gate means only during a predetermined interval after extraction of pattern information data from said memory storage means.

Claim 10

A sewing machine as set forth in claim 6 including means for inhibiting retrieval of data from said memory storage means during actuation of said skip stitch device in response to closure of any one of said switches.