Parnall Washing Machine

Part of Radiation
Presumably made by Parnall (Yate)
1954 (and 1956) Parnall (Yate) filed patents for inventions by Stanley Feneley Bickell for "Improvements in or relating to washing machines". Presumably these were commercialised as the Parnall Washing Machine.
1960s Advert for washing machine (attached)