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Double barrelled air pump

1801-1900

Patent 'Geryk' high vacuum pump

1901-1920

Fleuss vacuum pump (two cylinders)

1900-1910

Gaede steel slit diffusion pump

1920-1927

Glass ionisation vacuum gauge

1955-1980

Double barrelled air pump

1801-1900

McLeod's vacuum gauge (imperfect)

1880

Open type liquid air vapour trap and vacuum pump mechanism display

1915-1925

Steel diffusion air pump

1915-1925

Liquid air vapour trap (enclosed type)

1915-1925

Hero's fountain apparatus

1770-1820

Modern glass filter pump

1925-1935

Cosmos 'Bottle' type vacuum pump

1917-1921

Gaede type rotary mercury pump

1916-1926

Gear type rotary vacuum pump

1918-1923

Sectioned Cenco-Hyvac two stage rotary oil pump

1921-1926

Oil Free Rotary Vacuum Pump/Air Compressor made by Lacy-Hulbert Division of C.S. Maden & Co. Ltd.

Veeco' brand glass ionisation vacuum gauge

1955-1980

Mercury diffusion pump

1960-1969

Double barrelled air pump

1801-1900

Gaede molecular vacuum pump

1910-1914

Gaede single stage all-metal pump with accessories

1923-1928

Tate's double acting vacuum pump

1871-1900

Oil Free Rotary Vacuum Pump/Air Compressor

Mercurial air pump

unknown date

Double barrelled air pump

1801-1850

Single barrel air pump

1871-1900

Brass and steel accessories for air pump

1871-1900

Bunsen filter pump mounted on board and fitted with mercury gauge

1918-1928

Magdeburg hemispheres

1780-1820

Example to illustrate use of charcoal to produce high vacuum

1917-1927

Double barrel air pump by Moritz Pillischer

1851-1887

Gaede 3-stage metal diffusion pump

1915-1927

Toepler Mercury Pump, c 1905

1905
Francis Hauksbee's air pump, ca. 1708.

Francis Hauksbee's air pump

Sprengel's mercury pump, with funnel and mercury trough

Sprengel's mercury pump

Sprengel's air pump (single form) by E. Cetti, 38 Brooke Street, Holborn, London, England, 1880-1885. Fitted with single fall with side flask near top connected by rubber tube. Used by the Normal School of Science part of thee Department of Science and Arts, South Kensington, London, later the Royal College of Science then Imperial College (see note).

Sprengel's air pump (single form) by E. Cetti

1880-1885
Mercury air pump designed by the late Capt J.H. Thomson to work automatically by means of a water pump

Mercury air pump

Tate's double-acting air pump with apparatus for various experiments, late 19th century ( B 1908)

Tate's double-acting air pump with apparatus for various experiments

Double transferrer for air pump experiments, on turned mahogany stand, by Horne and Thornthwaite, London, and Single transferrer for air pump experiments, unsigned, British, 1871-1900 (see note)

Double transferrer, and single transferrer for air pump experiments

Air pump and receiver, on mahogany stand, by Baird and Tatlock, Glasgow, Scotland, 1871-1900 (see note)

Air pump and receiver by Baird and Tatlock, 1871-1900

1871-1900
Five fall Sprengel mercury pump, made by L. Casella

Five fall Sprengel mercury pump

Mercurial air pump of the Kahlbaum pattern

Mercurial air pump of the Kahlbaum pattern

Full size coloured sectional drawing of Holweck's molecular pump

Full size coloured sectional drawing of Holweck's molecular pump

McLeod's apparatus for measuring low pressures of gases

McLeod's low pressure gas measuring apparatus

Coloured sectional diagram, pen and ink, of early statical mercury vacuum pump, made at the Science Museum, London, 1928.

Coloured sectional diagram

1928
Coloured sectional diagram of Gaede's original mercury vapour pump, 1915

Coloured sectional diagram of Gaede's original mercury vapour pump

1915
Coloured sectional diagram of Langmuir's original mercury vapour pump, 1916

Coloured sectional diagram of Langmuir's original mercury vapour pump

1916
Holweck type molecular vacuum pump by The Mullard Radio Valve Co. Ltd., Balham, London, 1920-1926.

Holweck type molecular vacuum pump by The Mullard Radio Valve Co. Ltd.

1920-1926
Metal water-jet filter pump (no.15220), sectioned, in two pieces, by E. Leybold's Nachfolger, Cologne, Germany, 1924-1934

Metal water-jet filter pump (no.15220)

1924-1934