Slotting machine, made by Sharp Roberts and Co., Manchester, 1835. Constructed from cast iron on sort of arched frame design. Table with cross and front to back movements placed in middle with slotting arm above it. Three stepped pulley and hand wheel on drive cross shaft to gears on left with a secondary shaft working the slotting arm. Operating arms are missing from the cam to the rachet levers.
The Manchester engineer Richard Roberts was a partner in the Sharp Roberts company that built this machine in 1835. Roberts is believed to have invented the slotting machine. This slotter is made of cast iron. The table can be moved backwards, forwards and sideways. It can also be tilted so tapered slots can be cut.