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McVitie Weston valve collection, Myers valve

Electronic Components

1924

Myers valve, marked M on red and black end caps, '-Made in Canada-' on glass envelope, (RMW/D127A - McVitie Weston number), by Myers, E.B. Co. Ltd., 1924.

McVitie Weston valve collection, Mullard valve, type HF

Electronic Components

1924

Mullard valve, type HF, red ring painted on glass envelope, (RMW/B123 - McVitie Weston number), by Mullard Limited, 1924.

locomotive worksplate

Locomotives and Rolling Stock Components

1925

Locomotive Worksplate, Southern Railway, "Southern Railway E188", red, brass, oval, ex SR 2-6-2T LEW (built by Manning Wardle & Co 2042/7/1925), for Lynton & Barnstaple Line, exported to Brazil November 1935.

locomotive worksplate

Locomotives and Rolling Stock Components

1924

Locomotive Worksplate, "Kerr, Stuart & Co Ltd. No 4298 - 1924, London & Stoke-on-Trent", brass, oval, 0-4-0 saddle tank outside cylinders locomotive, 2ft gauge KS Type "Wren", to H Boot & Sons, Elstree (contractors), to Alston Limestone Co, Cowfields Whinstone Quarry, to British Gypsum, Long Meg Gypsum Mines, Lazonby, scrapped May 1951.

Photograph of engraving of Napier's Bones, cylindr

Mathematics

1925

Photograph of engraving of Napier's Bones, cylindrical, from Leupold's "Theatrum arithmetico-geometricum" 1727

Photograph of engravings of Morland's multiplying

Mathematics

1925

Photograph of engravings of Morland's multiplying instrument; (from Morland's " Description and Use of two arithmetick instruments", 1673)

McVitie Weston valve collection, Western Electric valve, type 101-D

Electronic Components

c. 1925

Western Electric valve, type 101-D, marked 895, (RMW/E143B - McVitie Weston number), by Western Electric Company Limited, c. 1925.

McVitie Weston valve collection, Mullard valve, type S4

Electronic Components

c. 1925

Mullard valve, type S4, marked 1277, (RMW/D35 - McVitie Weston number), by Mullard Limited, c. 1925.

McVitie Weston valve collection, Cunningham valve, type CX-299

Electronic Components

1924

Cunningham valve, type CX-299, (RMW/D152B - McVitie Weston number), by E.T. Cunningham, Inc., 1924.

10-point 3-level minor switch, for dialled digit s

Telecommunications

1925

10-point 3-level minor switch, for dialled digit storage (1925)

McVitie Weston valve collection, Ediswan valve, type P.V.8DE

Electronic Components

1925

Ediswan valve, type P.V.8DE, brass and black moulded base, (RMW/C88 - McVitie Weston number), by Royal Ediswan, 1925.

Three photographic prints of Leibniz's calculating

Mathematics

1925

Three photographic prints of Leibniz's calculating machine

Green 'Universal' electric was

Domestic Appliances

c.1924

Green 'Universal' electric washing machine and spin dryer made by Landers, Frary & Clark, New Britain, Connecticut, USA and obtained at the Wembley Exhibition in 1924.

Ceramic cup, London & North Eastern Railway

Passenger Comforts

1924

Cup, ceramic, London & North Eastern Railway, white with dark blue band with blue LNER monogram

Microscope Objective

Scientific Instruments & Research

1925

Microscope objective and two slides, by Ernst Leitz.

Microphotograph of Niepce

Photographs

1925

Microphotograph portrait of Nicephore Niepce, by Emanuel Goldberg, 1925. This microphotograph was distributed by Goldberg to participants at the Internationl Congress of Photography in Paris in 1925.

locomotive worksplate

Locomotives and Rolling Stock Components

1925

Locomotive Worksplate, LNER, "London & North Eastern Railway 69838, Hawthorn Leslie & Co, 1925", cast brass, oval, A5/2 4-6-2T, LNER No. 1768, renumbered 9838 August 1946, British Railways 69838 March 1949, withdrawn November 1958.

Muller x-ray tube by C. H. F. Muller, Hamburg, Ger

X-rays

1923

Muller x-ray tube by C. H. F. Muller, Hamburg, Germany, 1923.

McVitie Weston valve collection, MOV/GEC valve, type L.S.2

Electronic Components

1924

MOV/GEC valve, type L.S.2, marked 311, L.F.1. stem marked E45A 4054, (RMW/B111 - McVitie Weston number), by M-O Valve Co. Limited; General Electric Company Limited, 1924.

McVitie Weston valve collection, Marconi Osram valve, type L.S.3

Electronic Components

1924

Marconi Osram valve, type L.S.3, etched L 32815, filament missing, (RMW/B112A - McVitie Weston number), by M-O Valve Co. Limited, 1924.

Tender worksplate, London & North Eastern Railway

Locomotives and Rolling Stock Components

1923

Tender worksplate, London & North Eastern Railway, "London & North Eastern Railway 8900, Darlington Works 1923", cast brass, oval, for Class B16 4-6-0.

Plaster cast of centenary medal, London & North Eastern Railway

Coins and Medals

1925

Plaster cast of medallion, London & North Eastern Railway, to commemorate 100th anniversary of Locomotion No.1, in glazed oak frame, 1925.

McVitie Weston valve collection, Marconi valve, type L.S.1

Electronic Components

1924

Marconi valve, type L.S.1, pinch marked 636-E45B, (RMW/B110 - McVitie Weston number), by Marconi Company Limited, 1924.

McVitie Weston valve collection, Ramsay C.R.T. (Experimental) valve

Electronic Components

1923

Ramsay C.R.T. (Experimental) valve, glass envelope 2.5in diam x 1ft 3.5in long overall, with end pip, marked 230C, (RMW/K23C - McVitie Weston number), by Unknown maker, 1923.

Model of a Bisquine from Cancale in Brittany

Water Transport

1923; 1958

Rigged model, scale 1:30, of a Bisquine from the Bay of Cancale in Brittany, named 'La Belle Bretonne', unsigned, Europe, 1923. With human figures by Barbara Mary Campbell, Kingston-upon-Thames, Greater London, England, 1958.

Photogaphic print and diagram showing the compound photo-electric effect in krypton, produced by X-rays of 90 kV

Nuclear Physics

1925

Illustrative photogaphic print and diagram on passe partout mount minus frame, showing the compound photo-electric effect in Xenon, produced by X-rays of 90 kV, unsigned, Europe, 1925

Medium type self aligning ball journal bearing in

Mechanical Power Transmission

1925

Medium type self aligning ball journal bearing in section made for a 1 3/4"shaft and fitted with end covers;made by Hoffmann, 1925.

Metropolitan-Vickers Cosmos thermionic triode valve

Radio Communication

1923

Metropolitan-Vickers Cosmos thermionic triode valve DE11

British Thomson-Houston triode valve

Radio Communication

1925

British Thomson-Houston Company triode valve. Type B5

Cossor triode valve

Radio Communication

c. 1924

Thermionic valve, triode, manufactured by A. C. Cossor Ltd, 1924, A26; Type no. PL; red capped

thermionic valve - valve,triode

Electronic Components

1925

Cosmos short path rectifying valve, SP41/U (half). Four prongs, black base, glass envelope; like a lightbulb with a sealing point on top. Dates c.1925. Manufactured by Metropolitan Vickers

Metropolitan-Vickers thermionic triode valve

Radio Communication

1925

Metropolitan-Vickers thermionic triode valve 3

Marconi Osram thermionic triode valve

Radio Communication

1925

Marconi thermionic triode valve V.T. No. 3

Marconi thermionic triode valve

Radio Communication

1925

Marconi thermionic triode valve D. E. R. L28766

Marconi thermionic triode valve

Radio Communication

1923

Marconi thermionic triode valve in brown cardboard box T. 15 2132

EKCO H.T. Unit Radio

Radio Communication

1925

A H.T. type DC 15/25 radio, manufactured by E.K. Cole (EKCO).

Marconi Osram thermionic triode valve

Radio Communication

1925

Marconi Osram thermionic triode valve DE5B

Light Switch

Electricity Supply

1925

Electric wall switch with flick mechanism, made by J.H. Tucker & Company Limited.

locomotive worksplate

Locomotives and Rolling Stock Components

1925

Locomotive Worksplate, "Beyer Peacock & Co Ltd, H.W. Garratt's Patent. No 17165 - 1907, Manchester 1925, BP 6209/25", brass, oval, if this plate for British built Garratt then must be for London & North Eastern Railway 280+ 0-8-2 tank locomotive, Class U1, No. 2395, renumbered to 9999 March 1946, renumbered to 69999 November 1948, withdrawn December 1955.

Illingworth's Evitone Self Tanning Paper

Photographic Technology

1924

One packet of Illingworth's Evitone Self Toning Paper 'Special Exhibition Sample', 3 1/2 x 2 1/2 inch. sealed.

Illingworth's Slow Gas Developer

Photographic Technology

1924

Packet of Illingworth's slow gas developer, wrapped in silver foil pactek and printed paper wrapper.

Leaflet For Illingworth's Gaslight Paper

Photographic Technology

1924

Printed leaflet for Illingworth's gaslight paper.

Theodolite, Great Western Railway

Tools of the Trade & Personal Accessories

1923 (repaired)

Theodolite, produced by Troughton & Simms, Great Western Railway, engraved GWR Divisional Engineers' Office, Gloucester no. 12, with box, tripod and two eye-pieces, repaired 1923.

Wellcome diary for 1924

Printed Materials & Ephemera

1924

Wellcome diary for 1924, published by Burroughs Wellcome & Co., London. 95 page diary and negative index. Pencil missing.

Film positive 9 7/8 x 7 3/4) Nebula N.G.C. 7217, e

Astronomy

1923

Film positive 9 7/8 x 7 3/4) Nebula N.G.C. 7217, exposure 5 1/2 hours, 60-inch Telescope, enlarged 11.4 diam

Barber-Colman knotter.

Textile Industry

c1925

Barber-Colman knotter.

The Model Engineer medal awarded to C L Bennett

Coins and Medals

1924

Silver award medallion, The Model Engineers awarded to C.L. Bennett for O-gauge model of Stroudley tank locomotive, 1924. (see1978-8739)

Dummy model of 3-volt dry battery of 1923, as used

Electricity and Magnetism

1923

Dummy model of 3-volt dry battery of 1923, as used with ship's wireless

McVitie Weston valve collection, Western Electric Wecovalve valve, type 4215A

Electronic Components

1923

Western Electric Wecovalve valve, type 4215A, (RMW/D93 - McVitie Weston number), by Western Electric Company Limited, 1923.

Substantive Union Dyes on Cloth, LB Holliday, 1924

Industrial Chemistry

1924

Dye book, ‘Substantive Union Dyes on Cloth Containing Cotton and Wool’, by LB Holliday and Company Limited, Huddersfield, Yorkshire, England, 1924