carriage member with a suitable supporting force further when a small frame member is fixed to the carriage member the small or light frame member is attracted by the magnetic force of the magnet member thus the small frame member is fixed to the carriage member with suitable supporting force application_number US 19261888 A description in fig1 a driving mechanism 1 is provided on a bed 3a of an embroidery sewing machine 3 the driving mechanism 1 includes two d c motors which are driven by a control circuit not shown of the sewing machine 3 in a synchronous manner with the up and down reciprocation of a sewing needle not shown one of the motors drives a carriage member 4 mounted on the driving mechanism 1 for travel on the bed 3a along x axis illustrated in fig1 the other motor drives the entire driving mechanism 1 for travel on the bed 3a along y axis which is perpendicular to the x axis a large embroidery frame 14 is fixed to the carriage member 4 accordingly when the driving mechanism 1 and the carriage member 4 are driven the embroidery frame 14 travels on the bed 3a along the x and y axes fig2 a is a plan view of the carriage member 4 and a small embroidery frame 2 according to the present invention further fig2 b is a.