Sheet of devices: sound-maker, pincers and ox-less plough
Screw frames, rope-driven cylinders, remote-worked pincers and weapon studies crowd one page
A densely worked page gathers many small mechanical inventions. A frame with a double screw, cylinders wound with ropes, a hanging lantern-like device, remotely operated pincers and a plough meant to work without oxen are each labelled with a brief caption. One note tracks how far a wheel turns through successive stages, another proposes a machine to produce a great sound, and further sketches carry crossbow and bombard motifs recorded in the catalogue.
On this page
Fractions of a turn through successive stages
A note at the top records that in the first stage a wheel turns a quarter, in the second two eighths, in the third some further amount. It tabulates how the rotation is stepped down or accumulated across stages of the gearing.
A device to produce a great sound
Inside the larger drawing a caption declares its purpose is to generate a great voice or sound. It sits among the geared and screw-driven mechanisms filling the central part of the sheet.
Screws, rope-wound cylinders and remote pincers
At the left, details of screws and cylinders wound with rope are annotated with the remark that the action can be achieved by means of a rope. Below, pincers designed to be worked from a distance are shown, with a note on their cutting edge.
A way of ploughing without oxen
A caption at the left proposes a method of ploughing without oxen, replacing draught animals with a mechanism. It is one of several labour-saving contrivances jotted across the sheet.
Crossbow and bombard studies
Among the mechanisms are small studies catalogued as a dart-throwing wheel, trestle- and carriage-mounted crossbows, and bombards including one mounted on a boat. These arms are drawn rather than described, and no dedicated text for them is transcribed here.