BRIEF DESCRIPTION OF THE DRAWINGS
Other objects, features and advantages of the present disclosure will become clear upon reviewing the following description of the illustrative aspects with reference to the accompanying drawings, in which,
FIG. 1 is a front view of a lockstitch sewing machine in its entirety in accordance with a first illustrative aspect of the present disclosure;
FIG. 2 is a front view of a lockstitch sewing machine in its entirety with an embroidery unit attached;
FIG. 3 is a partial front view illustrating an inner configuration of a head of the lockstitch sewing machine;
FIG. 4 is a partial front view illustrating a needle-bar vertical drive mechanism and a needle-bar release mechanism;
FIG. 5 is a partial side view illustrating a needle-bar vertical drive mechanism and a needle-bar release mechanism;
FIG. 6 is a vertical sectional front-view of a first cam member;
FIG. 7 is a block diagram of a control system of the lockstitch sewing machine;
FIG. BA and 8B are flowcharts of a safety control;
FIG. 9 illustrates an image data captured immediately before sewing start;
FIG. 10 illustrates an image data captured after sewing start;
FIG. 11 illustrates an image data captured after sewing start; and
FIG. 12 is a flowchart of the safety control in accordance with a second illustrative aspect of the present disclosure;
Patent Application
20070227423
