These included a seven hundredweight double-action self-acting steam hammer; a four hundredweight double-action single standard hammer; a pillar radial drilling machine; a six-inch centre slide and screw cutting lathe; a "very powerful" planing machine; and a ten-inch centre double-geared slide lathe.

[7] In 1869, Thwaites and Carbutt supplied the engines for a reversing rolling mill at Landore steel works.

[8] In 1877 Thwaites and Carbutt supplied a rolling mill engine (see illustration) for the Eston Ironworks of Bolckow Vaughan and Co.

[11][12] Another patent, taken out by Robinson's son William Henry Thwaites in 1877 with help from Edward Carbutt was for mine ventilation equipment, as installed at Chilton Colliery (see illustration).

From being purely a family firm, Thwaites Brothers had a professional managing director by 1895, Arthur Devonshire Ellis.

[19] Thwaites Brothers were still in business as Engineers in 1914, continuing to make steam hammers, "Roots' blowers" (to ventilate mines) and assorted foundry equipment.