DISRAELI DOCUMENTS

French Patent # 785,015 Addition # 47,985

French Patent 785,015 Addition 47,985 - BGA Velectrik main image

This is the second of two patents covering Claudius Blanchard’s BGA Velectrik derailleur (see also French patent # 785,015).

This patent covers a simple (that word again) indexing mechanism delivered by making small indents in the slot along which the mechanism slides.

All the examples of BGA Velectrik derailleurs that I have seen do not have these indents - they have the plain vanilla slot shown in French patent # 785,015.


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