Automatic bobbin winder system

An automatic bobbin winder system for replenishing a bobbin in a convenient and economical manner without unthreading a sewing machine comprising, in combination:

• a housing having a lower flat base in a generally oval configuration with a major axis and a minor axis and an upper major surface at one end there above at a first distance and an upper minor surface at another end there above at a second distance less than the first distance, the housing also having a periphery coupling the base with the major and minor surfaces to create a major chamber and a minor chamber with a wall separating the major and minor chambers, the wall having a center of curvature at the center of curvature of the periphery at the end of the major axis there adjacent;
• a motor secured within the minor chamber with a drive shaft extending upwardly through the minor surface, the drive shaft above the minor surface having an inverted U-shaped spring for rotation therewith;
• a pair of batteries removably secured within the major chamber with a removable panel in the housing to permit access by a user to the batteries for repair and replacement,
• electrical components including a button mounted on the major surface with associated wires coupling the button and the motor and the batteries to allow a user to selectively depress the button for energizing and de-energizing the motor to selectively start and stop the rotating of the drive shaft;
• a removable bobbin positioned on the drive shaft and the U-shaped spring above the minor surface for rotating to thereby wind a bobbin thread thereon with the starting of the motor;
• a generally U-shaped channel formed in the major surface extending downwardly to a depth adjacent to the minor surface, the channel having an input end laterally offset from the axis of rotation above the wall in proximity to the periphery, the channel having an output end above the wall in proximity to the major axis, the channel having a first linear extent beginning at the input end and a second linear extent ending at the output end with a semi-circular extent there between;
• thread guides including a pair of elastomeric pads in the channel adjacent to the input end for applying a restrictive force to a thread being pulled there through, the pads having associated coil springs adapted to exert a force to the pads and thread there between, the guides also including a cylindrical post at the midpoint of the semi-circular extent of the channel for thread guiding purposes;
• and
• electronic sensors mounted on the minor surface laterally offset from the bobbin to detect the presence of thread wound on the bobbin with electronic controls coupling the sensors and motor and batteries to automatically inactivate the motor upon a predetermined quantity of thread having been received on the bobbin.