Welcome to Classical Images!
Description:This large original copper-plate engraved antique print by William Henry Hall was published in the 1798 edition of The new royal encyclopedia; or, complete modern universal dictionary of arts and sciences on a new and improved plan.... Charles Cooke, London.The Watt steam engine, alternatively known as the Boulton and Watt steam engine, was the first type of steam engine to make use of a separate condenser. It was a vacuum or atmospheric engine using steam at a pressure just above atmospheric to create a partial vacuum beneath the piston. The difference between atmospheric pressure above the piston and the partial vacuum below drove the piston down the cylinder. James Watt avoided the use of high pressure steam because of safety concerns. Watt\'s design became synonymous with steam engines, due in no small part to his business partner, Matthew Boulton.The Watt steam engine, developed sporadically from 1763 to 1775, was an improvement on the design of the 1712 Newcomen steam engine and was a key point in the Industrial Revolution. It was the first design to use a separate condenser.Watts two most important improvements were the separate condenser and rotary motion. The separate condenser, located externally to the cylinder, condensed steam without cooling the piston and cylinder walls as did the internal spray in Newcomens engine. Watts engine\'s efficiency was more than double that of the Newcomen engine. Rotary motion was more suitable for industrial power than the oscillating beam of Newcomens engine.
General Definitions:Paper thickness and quality: - Heavy and stablePaper color : - off whiteAge of map color: -Colors used: -General color appearance: -Paper size: - 15in x 9in (380mm x 230mm)Plate size: - 14 1/2in x 8 1/2in (370mm x 215mm)Margins: - Min 1/2in (12mm)
Imperfections:Margins: - Light age toning in marginsPlate area: - NoneVerso: - None
Hall, William HenryHall was responsible for a significant publication in the middle of the 18th century The new royal encyclopedia; or, complete modern universal dictionary of arts and sciences on a new and improved plan . containing a digest and display of the whole theory and practice of the liberal and mechanical arts comprising a general repository of ancient and modern literature . including all the material information that is contained in Chamber s Cyclopedia, the Encyclopædia Britannica, and the French Encyclopædie . first published in 1788 going into many re-issues over the next 50 years.The three volume set contained 153 copper-plate prints and maps, including some folding maps. Contained many brief encyclopedic entries in alphabetical orders plus longer, mainly illustrated, sections (systems or treatises) on a variety of subjects: Aerology; Aerostation (hot air balloons); Agriculture; Algebra; Amphibiology; Anatomy; Annuities; Architecture; Arithmetic; Astronomy (includes plates of telescopes); Book-Keeping; Botany; Brewing; Chronology; Chymistry; Comparative Anatomy; Concology; Dialling; Distillation; Drawing; Earth; Earthquakes; Electricity; Entomology; Farriery; Fencing; Fluxions; Fortification; Gardening; Geography (this section includes six folding maps); Geometry; Globes; Grammar; Heraldry; Hydrostatics and Hydraulics (one plate included a diving bell); Icthyology; Knighthood; Logic; Mammalia (included a plate showing whales); Mechanics; Medicine; Mensuration and Gauging; Miscroscopic Apparatus (microscopes); Midwifery; Military Affairs; Music; Natural History; Naval Affairs; Navigation (includes a folding map showing Cooks voyages); Optics; Oratory; Ornithology; Peerage; Perspective; Pneumatics; Projectiles; Steam Engines; Surgery; Surveying; Trigonometry; Vermeology; Volcanos; and War. Hard to find a complete set, as many have been broken up for their handsome copper plate engravings and maps.