Dredging crane: a toothed scoop slung from a swinging boom
A hand-cranked winch works a scoop that dips past an embankment
A pen drawing shows a lifting machine set on the edge of a raised embankment: a hand-cranked winch in a small frame at the left, a tall vertical mast, and a diagonal boom whose far end carries a large curved scoop by cables. The scoop, its lower rim set with a row of teeth or studs, hangs down toward the ground or water beyond the bank, in the manner of a dredge or excavating bucket. The bundle records no writing on the sheet ('devoid of writing'), so the reading rests on the drawing alone.
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Winch, mast and boom carrying the scoop
At the left a small frame holds a crank handle that drives a winch, and from it a tall upright mast and a long diagonal boom rise. Cables run from the head of the boom down to a large scoop suspended over the far side, so that turning the crank would raise and lower the load.
Toothed scoop for dredging past the bank
The suspended bucket is a broad curved scoop whose lower edge bears a row of teeth or nubs, dipping past the embankment toward the bed below. Such a device would bite into and lift spoil or mud, as in dredging or excavating a channel.