Emblems and Allegory

Stacked machine casing

Hand holding a chain

Winged figure above a sea horse

Screw press with gauge

Basket of leafy branches

Bird on a pedestal between serpents

Lifting jack on a bed

Hand drawing a bow

Flower inside a serpent ring

Charcoal water filter

Trees on rocky crags

Hand holding a coiled serpent

Sand and charcoal filter

Birds in a cage

Sectioned flap valve

Hand holding a spear and shield

Sectioned centrifugal pump

Two torches crossed and tied

Dutch tower windmill

Torch burning downward

Windmill pump tower

Ring of twisted cord

Meshed hopper scoop

Star shining through clouds

Spiral cased fan

Altar under a dark sky

Twin rotor vane diagram

Two flaming hearts

Meshing rotor diagram

Empty chair

Twin rotor rotary pump

Flaming heart

Rope on a capstan drum

Tree beside a birdcage

Air and water discharge tank

Sunflower turned to the sun 02

Twin pipe valves and nozzle

Woman with a sword and flowers

Gear case in section

Small tree on bare ground

Sectioned engine block

Shore with a motto

Blowpipe burner

Figure with a beast at his feet

Anvil on a block

Figures among rocks

Twisted glass burner

Tree in fruit

Valved brass cornet

Crescent moon over a tree

Coiled horn

Village beside a stream

Upright brass tuba

Candle burning on a stand

Timber hopper

Painter at an easel

Levered grating machine

Crown and sceptre on a pedestal

Switch contact board

Rough sea on a low shore