With the basic designs of his machines long established, W.F.Thomas' 1856 patent focusses on peripheral devices for specific applications.
Fig.1 shows a sprung, obliquely mounted presser wheel "d" - this being employed to keep the edge of the work up to a guide. Glove sewing is one application cited for its use.
In fig.4, a rotary brush "f", is used when applying edge bindings. The resulting action keeps the underside of the binding smooth against the fabric, which is shown at "h".