This section is from the book "Spons' Mechanics' Own Book: A Manual For Handicraftsmen And Amateurs", by Edward Spon. Also available from Amazon: Spons' Mechanics' Own Book.
In the case of chairs covered with morocco, roan, or American leather cloth, with plain seats and welted borders, the springs are usually left a little higher than in the previous case, otherwise they do not differ in the first stuffing. The skin is best cut on the first stuffing; lay it clean out without straining, pin round, allow for turning, and cut to shape; but some prefer to finish the seat in calico and cut the skin on that. The border and welt are cut and joined as before; after straining on, notching, and sewing, the welt is hammered flat, and the strain on the border prevents wrinkles. When the skin is thus prepared, the second stuffing commences by picking on the hair; then it is finished in calico, and temporary ties are stitched up through webs, springs, and seat, pulling all down flat, and knotted beneath. Now the skin can easily be drawn on, the welt is stitched to the edge of the first stuffing, and the border tacked down in place; on the temporary ties being cut and pulled out, the seat rises up tight. If the welting is omitted, as usual in all but first-class articles, the skin is tacked down to the seat-rail moulding, and the same process followed out.
Plaits can be eased out by temporary tacking and shrifting, except on round articles, when care must be taken to have them vertical.