Control device for the operation of a sewing machine

Claim 2

A control device for the operation of a sewing machine which comprises in combination: a sewing machine adapted to be driven for a cycle of sewing operation; a driving device; electromechanical means coupled between said driving device and said sewing machine for connecting said driving device to and disconnecting said driving device from said sewing machine; a manual control pedal movable among a forced neutral position, a driving position on one side of the neutral position, and a first heeling position and a second heeling position on the other side of said neutral position, said pedal being coupled to said electromechanical means for mechanically controlling said electromechanical means to drive and stop said sewing machine; an electric stop device forming part of said electromechanical device for selectively stopping the sewing machine needle at a predetermined upper or lower dead point; and circuit means including a plurality of switches acted on by said control pedal in its respective driving position and heeling positions, and said circuit means being coupled to said electromechanical means to said stop device for actuating the electromechanical means for driving the sewing machine needle upwardly and downwardly when the control pedal is in said driving position, for stopping and holding the needle at the predetermined upper dead point when the control pedal is in said forced neutral position, for stopping and holding the needle at the lower dead point when the control pedal is in said first heeling position, for stopping and holding the needle at the upper dead point when the control pedal is in said second heeling position, and for stopping and holding the needle at the lower dead point when the control pedal is moved directly from the first heeling position to the forced neutral position without being moved to the second heeling position.

Claim 3

A control device as claimed in claim 1 in which said electromechanical means includes clutch means for operating said sewing machine at a low speed and at a high speed and lever means for changing said clutch from low speed operation to high speed operation, said manual control pedal being connected to said lever means and movable from an intermediate driving position which is between said driving position and said forced neutral position to said driving position for actuating said lever means for changing said driving speed from the low speed to the high speed, one of said switch means being pOsitioned to be actuated by said manual control pedal when it is in said intermediate drive position for driving said sewing machine at said low speed, whereby said sewing machine is driven at a low speed when said pedal is moved to said intermediate driving position and at a high speed when said control pedal is moved to said driving position.

Claim 4

A control device for the operation of a sewing machine which comprises in combination: a sewing machine adapted to be driven for a cycle of sewing operation; a driving device; electromechanical means coupled between said driving device and said sewing machine for connecting said driving device to and disconnecting said driving device from said sewing machine; a manual control pedal movable among a forced neutral position, a driving position on one side of the neutral position, and a first heeling position and a second heeling position on the other side of said neutral position, said pedal being coupled to said electromechanical means for mechanically controlling said electromechanical means to drive and stop said sewing machine; an electric stop device forming part of said electromechanical device for selectively stopping the sewing machine needle at a predetermined upper or lower dead point; and circuit means including a plurality of switches acted on by said control pedal in its respective driving position and heeling positions, and said circuit means being coupled to said electromechanical means and to said stop device for actuating the electromechanical means for driving the sewing machine needle upwardly and downwardly when the control pedal is in said driving position, for stopping and holding the needle at the predetermined upper dead point when the control pedal is in said forced neutral position, for stopping and holding the needle at the lower dead point when the control pedal is in said first heeling position, for stopping and holding the needle at the upper dead point when the control pedal is in said second heeling position, and for moving and holding the needle at the upper dead point when the control pedal is moved directly from the first heeling position to the forced neutral position without being moved to the second heeling position.

Claim 5

A control device for the operation of a sewing machine which comprises in combination: a sewing machine adapted to be driven for a cycle of sewing operation; a driving device; electromechanical means coupled between said driving device and said sewing machine for connecting said driving device to and disconnecting said driving device from said sewing machine; a manual control pedal movable among a forced neutral position, a driving position on one side of the neutral position, and a first heeling position and a second heeling position on the other side of said neutral position, said pedal being coupled to said electromechanical means for mechanically controlling said electromechanical means to drive and stop said sewing machine; an electric stop device forming part of said electromechanical device for selectively stopping the sewing machine needle at a predetermined upper or lower dead point; and circuit means including a plurality of switches acted on by said control pedal in its respective driving position and heeling positions, and said circuit means being coupled to said electromechanical means and to said stop device for actuating the electromechanical means for driving the sewing machine needle upwardly and downwardly when the control pedal is in said driving position, for stopping and holding the needle at the predetermined upper dead point when the control pedal is in said forced neutral position, for stopping and holding the needle at the lower dead point when the control pedal is in said first heeling position, for stopping and holding the needle at the upper dead point when the control pedal is in said second heeling position, and for moving and holding the needle at the upper dead point when the control pedal is moved directly from the first heeling position to the forced neutral position without being moved to the second heeling position.

Claim 6

A control device as claimed in claim 3 in which said electromechanical means includes clutch means for operating said sewing machine at a low speed and at a high speed and lever means for changing said clutch from low speed operation to high speed operation, said manual control pedal being connected to said lever means and movable from an intermediate driving position which is between said driving position and said forced neutral position to said driving position for actuating said lever means for changing said driving speed from the low speed to tge high speed, one of said switch means being positioned to be actuated by said manual control pedal when it is in said intermediate drive position for driving said sewing machine at said low speed, whereby said sewing machine is driven at a low speed when said pedal is moved to said intermediate driving position and at a high speed when said control pedal is moved to said driving position.