The ornamental design for a motor of sewingmachine, as shown and described.
FIG. 1 is a perspective view showing my new design for a motor of sewing machine;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view thereof showing the device in status of use.
The broken lines shown in the drawings are for the purpose of illustrating unclaimed environmental subject matter only and form no parts of the claimed design.