Mechanism for opening a water sluice
Pen-and-sanguine sketch of a sluice-gate device (drawn inverted)
A faint pen-and-sanguine sketch, drawn with the page inverted, shows a device for opening a water barrier or sluice. A boxed frame at the lower left carries an upright and a projecting handle or lever, above which sweeping curved strokes suggest the released flow or the raised gate. The drawing is a rough working study rather than a finished mechanism.
On this page
Opening of a water barrier
The sketch is captioned as the opening of a water barrier or sluice. The curved fan of lines rising from the framed structure reads as water being let through or the gate lifting clear of its channel.
Framed gate with lever
At the lower left a rectangular frame holds an upright member and a short projecting arm resembling a handle or lever. This appears to be the operating mechanism by which the barrier is drawn open.