stitching for clothes may be accomplished by the overedge stitching mechanism 44 entirely similarly to a conventional overedge sewing machine and in a state as indicated by phantom line in this case even if the upper mechanism 25 in the lockstitch mechanism 24 is disposed at the foremost end of the arm frame 13 it is positioned greatly withdrawn from the upper surface of the bed 11 as shown in fig5 hence the upper mechanism 25 will not stand in the way of clothes 91 to be overedge stitched as shown in fig4 this facilitates the overedge stitched work it should be appreciated that in alternately carrying out the lockstitching work and overedge stitching as previously mentioned the lockstitch mechanism 24 and the overedge stitching mechanism 44 are positioned with respect to the machine frame 10 as previously mentioned in the present sewing machine so that either way of sewing may be initiated immediately only by slight movement of hand as shown in fig6 also in this case either sewing mechanism 24 or 45 may merely be moved by means of the selecting mechanism 77 accordingly the driving force of the motor 88 required is not very much further there prevention of accidents involved in a case for example where clothes to be lockstitched erroneously get entangled in the overedge stitching mechanism 44 during the operation of lockstitching sewing moreover since the upright support 12 is interposed between the lockstitch mechanism 24 and overstitch stitching mechanism 44 which are positioned to left of the upright support 12 and the selecting mechanism 77 which is positioned opposite thereof clothes may be moved by the.