Rotary hauling machine that pulls loads of any shape
Movable inner wheels drawn toward a fixed outer ring by a windlass
The upper drawing is a circular capstan-like drum studded with radial threaded rods and wound with a rope at its base; the lower is a frontal plan of a wheel whose many radial arms end in eyes arranged in two concentric rings on a trestle. The notes say this pulling device works for a load of any figure — square, triangular or round — and that the lower figure is the foundation of the upper. The wheels toward the center are movable and those toward the outer circle are fixed, so that turning the windlass (argano) draws the inner wheels toward the outer ones and hauls in whatever is attached.
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Movable inner wheels drawn toward the fixed outer ring
The lower plan is the foundation of the upper machine: the wheels toward the center are movable while those toward the greater circle are fixed. Turning the windlass makes a circular movement in which the inner wheels approach the outer ones and pull behind them whatever is attached.
One pull for loads of any shape
This pulling action serves for a load of every figure — square, triangular, round, or any other form that can be imagined. A single rotary mechanism thus applies to hauling tasks of widely differing geometry.