not the correct Orient fork or chainring
bikes looks earlier than 1899, maybe closer to 1895 ..... could be wrong
almost looks like an early 1895 Pierce model (fat fork crown, no lugs, similar chainring)
about the "brake", cool idea, but friction braking directly on the chain like this would probably put so much tension on it that it would get ruined in a short time.
cool family history!
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