Idoson Motor Cylinder Co
of Ballot St., Smethwick (1938)
of Tipton, supplier of cylinder barrel and head castings to the motor cycle factories
1926 was in business[1]
1927 New workshop built for the company in Ballot Street[2]
1947 William Jackson was a director of Idoson Motor Cylinder Co. and T. and J. Foundries, Ltd., Birmingham.[3]
1955 Acquired by BSA[4]. Became one of BSA's general engineering companies.
1962 Had one of the most highly mechanised shell moulding units in the country.[5]
By 1963 was a member of the BSA Metal Components Division
1965 Became B.S.A. Foundries[6]