A wheel-and-cord mechanism with a hanging weight
A toothed wheel linked by cord to a framed drum on a wall bracket
A wheel-and-cord mechanism is drawn on a wall bracket: a framed drum with a crank, braced diagonally, its cord running to a toothed wheel at the left from which a rod hangs a round weight. Only a fragment of text, 'Tell me how…', is transcribed, though mirror-script and further notes accompany the device on the sheet. Scholarly tags associate the sheet with the pressure and motion of a fluid escaping a vessel through its vent and with velocity being proportional to height.
On this page
Wheel-and-cord mechanism on a wall bracket
A framed drum-and-crank mechanism is fixed to a wall bracket with a diagonal brace; a cord runs from it to a toothed wheel at the left, below which a rod carries a round weight. A line of mirror-script and further untranscribed notes appear beside the device.