By 1828, as the business had grown, Cyrus appointed his younger brother James (1811–1906) as an apprentice. Educated away from Street, James was meant to be apprentice to a chemist in Bath, but successfully pleaded with his parents to let him stay in Street and help Cyrus. In 1828–1829, whilst serving this apprenticeship, James began utilising the offcuts that were too short for making rugs to produce slippers (known as Brown Petersburgs). The slippers were made using outworkers who collected materials from the factory, assembled footwear in workshops at home and returned the finished product for payment. This trade rapidly evolved, providing James with a legitimate claim to an equal partnership in the business when his apprenticeship was served in 1833. Thereafter, it traded as C. & J. Clark.