Translucent green, glass round-bottomed vase with heavy rainbow luster throughout. Base of the vase is round and then attaches to a vertical tube in the center, top of the tube has an ornamental curved design that…

Millstone can be raised or lowered by a wedge. This mill grinds and sifts flour at same time.

Mechanics: overshot waterwheel; lantern and crown gear.

Millstone can be raised or lowered by wedges.

Mechanics: horse whim; spur gear and lantern; lantern and crown gear.

Mechanics: undershot waterwheel; noria; Archimedean screw; angle crown gears; lantern and crown gear.

Mechanics: internal vertical treadwheel; chain of buckets; spur gear and lantern; roller shaft bearing.

Can be operated by a single person, easily and with little noise. The device depicted here is also illustrated on Plate 166.

Mechanics: hand crank; worm and worm gear; double toggle linkage.

Mechanics: overshot waterwheel; sliding-vane rotary pump.

Mechanics: hand crank; lantern and crown gear; chain drive; flywheel.

Mechanics: horizontal submerged waterwheel; horizontal crankshaft; lift pump; spur gear and lantern; lantern and crown gear; horizontal working beam; crank and connecting rod.

Mechanics: undershot waterwheel; lift pump; grooved eccentric cam; horizontal working beam; roller guides.

Mechanics: hand crank; swinging-vane rotary pump; spur gear and lantern; worm and worm gear; lantern and crown gear; flywheel; slotted-head screw.

Mechanics: hand crank; Spur gears; worm and worm gear; lantern and crown gear.

Mechanics: winch; falling weight; spur gear and lantern; lantern and crown gear; ratchet.

Mechanics: horizontal spoked treadwheel; force pump; conical valve; double interrupted crown gears and lantern gear; spur gear and lantern; horizontal working beam.

Mechanics: hand crank; bucket; spur gear and lantern; flywheel.

Mechanics: undershot waterwheel; force pump; conical valve; double interrupted crown gears and lantern gear; spur gear and lantern; horizontal working beam.

Mechanics: hand crank; horizontal crankshaft; lift pump; horizontal working beam; crank and connecting rod; flywheel.

For launching rocks and fireballs to defend a city or fortress.

Mechanics: hand crank; worm and worm gear; spur gear and recessed face gear; projectile throwing engine.

Mechanics: hand crank; gated-lobe rotary pump.

Bridge sections composed of trapezoidal prisms are transported rolled up. Unrolled, the sections are connected together with hinges, and the bridge floats on the water.

Mechanics: winch; ratchet; projectile throwing…

Accordion folded bridge sections can be quickly and unexpectedly rolled out and brought up to the wall.

Mechanics: capstan bars; hand crank; worm and worm gear; lantern and rack; roller guides.

This device uses a paternoster pump, named for its resemblance to a rosary. Also known as a "rag and chain" pump or a "rubber bucket chain" pump.

Mechanics: hand crank; paternoster chain pump; flywheel.

Complete structure can be rotated by rudder to catch optimal wind. Sails can be stopped and secured. Contains mechanism to lift grain sacks.

Mechanics: windmill (post mill); lantern and crown gear.

Mechanics: undershot waterwheel; noria; spur gear and lantern.

The man looking out of the grilled window in the background foreshadows the section on screw-jacks (Plates 154–167).

Mechanics: machine crank; inertia chain; lift pump; flap valve.