I own a Davis Sewing Machine Company "Dayton" tandem bicycle with a long block chain driven by two "Brumberger" cranks. The bicycle can be steered from front or rear -and the lady sat in front and the gentleman sat in the rear. It belonged to my paternal grandfather in Lac Megantic, Quebec and later in Kamouraska and later still Quebec City. The oldest date to be found on this bicycle is 1898 stamped into the cranks. It was originally red (now oxidized somewhat) and the wheels are steel (painted to match the bicycle). Does anyone possess further information on this bicycle model/design?