Mickey2

I have seen Singer machines converted to electrical and given the smaller solid cast hand wheel in the process. Pre 1930 hand cranks and treadles were more common than I though, from around 1920 electrical setups became more common, but not until after 1930 it seem to have become the new standard. Threadle and hand crank were still relatively common up until early 1950s, even if most by far went for electrical. The Singer lamp was often fitted on treadle 66 models. I have seen early 1920s 66 machines in original state, electrical motor and library cabinet. I have noticed hand cranks often was fitted with Singer motor and light pretty early on, especially in the UK and Scandinavian countries. It seems like it was a standard or even planned "upgrade" available in Singer shops.