a reader of the blog sent me a link to the ehow article titled : What Does a Serger Sewing Machine do asking whether the Merrow history was correct
Well the article is certainly closer than most! However the author neglects to note that the father/son team first perfected the looping stitch with one thread (now known as the Whip Stitch) and modified this to trim with three threads, creating the first automated overlock stitch. The implications were broad and this invention changed how clothing and garments were manufactured.
Great stuff though -- we're proud to carry on the tradition!