Sewing apparatus employing twin needles

An apparatus for use in a sewing machine employed in the manufacture of two simultaneous tacks formed by joining a first unit of material to a second unit of material, after both have been fed into a sewing station including:

• a sewing machine head;
• said sewing machine head being defined by first and second independently driven sewing needles spaced apart with respect to one another in a vertical plane, each of said needles depending from first and second supporting members, said needles being movable in concert with respect to one another and to first and second units of material in said sewing station;
• needle adjusting means adapted to longitudinally displace said first supporting member with respect to said second supporting member in accordance with a predefined needle-to-needle distance, material guide means supported about said pair of needles for positioning said first unit of material with respect to said second unit of material, prior to initiating the movement of said pair of spaced apart sewing needles;
• first and second bobbins having associated first and second shuttle means, being adapted to cooperatively act with said pair of spaced apart sewing needles to form a plurality of stitches for joining said first and second units of material;
• material feed means disposed in proximity to said sewing machine, being defined by interconnecting members driven to control longitudinal and lateral movement of first and second units of material during movement of said needles;
• and drive means interconnecting each of said bobbins through shaft means, for operating said first and second bobbin shuttle means in synchronization the respect to the movement of said needles.