Serial No. 304737 Wheeler and Wilson, Mfg., Bridgeport, Conn. Style of head changed little during second half of 19th century but in 1861 a glass pressure foot was introduced to feed material through from left to right. The u shaped foot is made of metal but the needle descends through the glass plate which allowed the seamstress to observe the stitching and to produce very close edge stitching. In the late 1850s a table style sewing machine would cost around $100.00.