DISRAELI DOCUMENTS

French Patent # 669,030 Addition # 37,231

French Patent 669,030 Addition 37,231- Simplex main image

Later in 1929, Simplex’s initial single pulley wheel design (see French Patent # 669,030) appears to acquire the option of a second pulley wheel - but this is rigidly fixed in relation to the mounting bracket. The chain is tensioned by movement of the whole gizmo.


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