DISRAELI DOCUMENTS

French Patent # 669,030 Addition # 37,905

French Patent 669,030 Addition 37,905- Simplex main image

In 1930, Simplex made this further addition to French Patent # 669,030. The design continues to use the double pulley configuration adopted in French Patent # 669,030 Addition # 37,231. But now the main mounting bracket is fixed and the pulley cage is sprung to provide chain tension - in the style of a Cyclo.


Share this page