Coloured sectional diagram of Gaede's original mercury vapour pump, 1915 Coloured sectional diagram of Gaede's original mercury vapour pump 1915
Langmuir type metal vacuum pump part sectioned, unsigned, American, 1915-1925 Langmuir type metal vacuum pump part sectioned 1915-1925
Coloured sectional drawing of Holweck's molecular vacuum pump, 1925-1931 Coloured sectional drawing of Holweck's molecular vacuum pump 1925-1931
Coloured sectional diagram of Langmuir's original mercury vapour pump, 1916 Coloured sectional diagram of Langmuir's original mercury vapour pump 1916
Coloured diagram showing arrangement for exhausting a large wireless valve, by Science Museum Drawing Office, South Kensington, London, 1927. A Herbert McLeod vacuum gauge is shown for measuring pressure. Coloured diagram showing arrangement for exhausting a large wireless valve 1927
Sprengel type mercury vacuum pump, unsigned, German, 1919-1929 Sprengel type mercury vacuum pump 1919-1929
Vacuum pump used by Glaxo at two pilot plants at their Greenford site during 1956-1970 and 1970-1994 for new drug development. Some of the principle drugs developed and marketed by GlaxoWellcome in which this pump would have played a part in the R&D process include: Becotide (asthma drug which received the Queen's Award; Zinacef (antibiotic); Fortum (third generation inhectable antibiotic which received the Queen's Award); Zinnat (oral antibiotic which received the Queen's Award); Flixotide (asthma). The pump was refurbished by APM Electro Mechanical Services Ltd. Vacuum Pump used by Glaxo circa 1920
Gaede type rotary oil pump, by W. Edwards & Co., London, England, 1916-1926 Gaede type rotary oil pump 1916-1926
Coloured sectional diagram, pen and ink, of early statical mercury vacuum pump, made at the Science Museum, London, 1928. Coloured sectional diagram 1928
Glass Gaede mercury diffusion pump, (3 pieces), unsigned, European, 1915-1925 Glass Gaede mercury diffusion pump 1915-1925
Glass globe containing bladder, unsigned, British, 1801-1900 Glass globe containing bladder 1801-1900
Complete educational high vacuum pumping equipment, model 2SC20A, Serial No. 11579, two stagerotary pump fitted with Solenoid Air Admittance valve, by Edwards High Vacuum Ltd, Manor Royal, Crawley, Sussex, England, 1955-1968. Complete educational high vacuum pumping equipment 1955-1968
Schematic drawing, pencil and paint wash, indicating the operation of a mercury vacuum pump, unsigned, British, 1870-1876. Schematic drawing 1870-1876
Double barrelled air pump by William Cary, London, 1801-1900 (see note) Double barrelled air pump by William Cary 1801-1900
Double barrelled air pump by Thomas Rubergall, London, England, 1805-1854 (see note) Double barrelled air pump by Thomas Rubergall 1805-1854
Double barrelled air pump with transferrer, unsigned, British, 1871-1900 (see note) Double barrelled air pump with transferrer 1871-1900