Needle-bar and take-up lever selection apparatus for embroidery machine

Claim 1

In a multiple needle-bar and take-up lever embroidery machine supported by a support bar and frame stands, an apparatus comprising: a needle-bar case (22) positioned on a needle-bar case frame (9), comprising the following members; a. a frame structure consisting of two vertical frames (24a, 24b) and two lateral frames (26, 28), b. two pairs of projected arms (40a, 40b) (40c, 40d) through which lateral bars (16a, 16b) extend respectively, said projected arms being slidable in relation to said lateral bars respectively, c. a plurality of projections series (36) of needle-bar clamps series (38) which are respectively attached to needle-bars series (34) which can slide upward and downward respectively through holes series (30) positioned in said lateral frame (26) and holes series (32) positioned in the lateral frame (28), said projection series being slidable within a groove (14) positioned in a central frame (12), d. a needle-bar case slide bar (8) attached to a projection (44) by the media of a bracket (48) with a bolt (52) and fasteners (46a, 46b), e. a plurality of needles series (20) attached to the needlebar series (34); a structure of take-up levers, comprising a take-up lever guide bar (41) which are arranged between two projection arms (39a, 39b) and which are extending through equally spaced take-up lever guides series (43) which comprises take-up lever gears series (47), take-up levers series (45) provided with projected portions series (49) which are slidable within either a lateral groove (51) or a groove (55) positioned in a base (56) respectively; a motor and cam driving means, comprising a motor (88) having a motor gear (90) which starts operation in connection with electrical contact devices including micro-switches series (82) and silver paper contacts series (86) positioned on a punched Jacquard card (84), the motor gear (90) being in mesh with a cam gear (92) mounted on a cam shaft (72), and a slide cam (76) which is also mounted on the cam shaft (72) and has a cam groove (74) within which a roller (80) of a cam driver (78) mounted on the needle-bar case slide bar (8) is slidably positioned; a needle-bar driving means, comprising a needle-bar driver (54) extending through and in fixed relationship to a clamp (62) provided with a groove (60) and being arranged movable upward and downward through bushings (58a, 58b) by means of a needlebar driver crank (68) in operation with the rotation of a needle-bar driver shaft (6), and a groove (64) positioned in the central frame (12) behind of which the needle-bar driver (54) is positioned with its groove (60) being in a position ready to be engaged with one of the projections series (36) of the needle-bar clamps series (38), whenever a preselected needle-bar is positioned at the groove (64); and a take-up lever driving means, comprising a take-up lever driving gear (53) through which a take-up lever driving shaft (3) extends and to which the shaft (3) is in a fixed relationship, the driving gear (53) not only being arranged to be engagable with one of the take-up lever gears series (47) which is selected by means of this invention but also being arranged to be rotatable with the rotation of said shaft (3), whereby one of the take-up levers series (45) attahced to one of the take-up lever guides series (43) being arranged to move upward and downward with one of the projected portions series (49) sliding within the groove (55).