[ H.M. Patent Office, London. ] Manuscript document containing 'Searches' into the 'Novelty' and 'Validity' of around 150 patent applications, with diagrams and index.

H.M. Patent Office, London (now the Intellectual Property Office) [ Sir Henry Bessemer; Sir John Coode; Gusttav Overbeck; Crosse & Blackwell; Wedgwood; Bryant & May ]
Publication details: 
H.M. Patent Office, 25 Southampton Buildings, London, WC. 13 March 1878 to 19 December 1882.

The Patent Office - now the Intellectual Property Office - was established by the Patent Law Amendment Act of 1852, which simplified the procedure for obtaining patents of invention and reduced costs. In 1883 another Act of Parliament brought into being the office of Comptroller General of Patents, with, according to the National Archives, 'a staff of patent examiners to carry out a limited form of examination; mainly to ensure that the specification described the invention properly, but without any investigation into novelty'.

[ R. E. B. Crompton, inventor and electrical engineer. ] Autograph Card in the third person, paying his subscription to the Royal Society of Arts.

R. E. B. Crompton [ Rookes Evelyn Bell Crompton ] (1845-1940), British inventor, electrical engineer and industrialist [ Crompton & Co. ]
Publication details: 
On letterhead of Thriplands, Kensington Court, W. [ London ] 31 January 1901.

On both sides of a 9 x 11 cm. grey card with embossed letterhead. In good condition, lightly aged. Docketted and with Royal Academy of Arts stamp. 'Lt. Colonel Crompton begs to enclose a cheque in payment of his subscription and will be greatly obliged to the Secretary if he will send him a form to enable his Bankers - Messrs. Barclay & Co. to pay the subscription in future.' Crompton's firm Crompton & Co. was one of the world's first large-scale manufacturers of electrical equipment.

[Arthur Campbell, Victorian photographer.] Memorandum of Agreement in which he undertakes to teach Leonard Langsford 'how to prepare the photographic paper called "Gelatino-chloride glossy printing-out paper"'. With three associated signed documents.

Arthur Campbell of 6 Brooks Road, Gunnersbury, Victorian photographer [Leonard Langsford of the Lisle Press, 24 Whitcomb Street, London, printer; Campbell Studios?]
Publication details: 
Memorandum: 17 June 1910. Receipt by Campbell: on letterhead of The Acacias, Brooks Road, Gunnersbury, W. [London]. 8 July 1910. Letter by Langford: on letterhead of The Lisle Press Ltd., 24 Whitcomb Street, Pall Mall. 17 June 1910.

The collection consists of four items. All four in good condition, on lightly-aged paper, with slight creasing. ONE: Typed Memorandum. 3pp., foolscap 8vo. Signed over a stamp by Campbell, and witnessed by Florence Campbell of Newcastle-on-Tyne. Campbell agrees to teach Langsford 'how to prepare the photographic paper called "Gelatino-chloride glossy printing-out paper" by the same formula and process as he uses and put him in the way to start and carry on a business for himself'.

Autograph Letter Signed ('Colladon' | professeur à l Ecole Centrale') to 'Monsieur le Directeur Général des Douanes, Paris'.

Jean-Daniel Colladon (1802-1893), Swiss physicist and engineer, Professor of Mechanics at the École Centrale des Arts et Manufactures, Paris [Eugène Flachat (1802-1873)] [steam engines; railway]
Publication details: 
27 January 1835; 'à Lyon chez Messieurs Pine Des Granges', on letterhead of the École.

4to bifolium: 2 pp, with address on otherwise-blank second leaf. Very good on lightly aged paper. Slight wear to extremities. A significant document, casting light on the relative states of engineering in early nineteenth-century France and England, and the role of the scientist in France at that time.

Autograph Letter Signed "C..T. van Straubenzee, Governor", WITH Autograph Note Signed "EA Inglefield"

General Sir Charles Van Straubenzee [ Admiral Sir Edward Augustus Inglefield ]
Publication details: 
The Palace Malta [Ist] November 1875 AND [Malta] Dockyard, 3 Nov. 1875

See DNB for both van Straubenzee and E.A. Inglefield (the latter Admiral and explorer (1820-94). One page, folio. Van Straubenzee feels it is important to visit Gozo "during this month on duty", and asks if Inglefield will be good enough to "grant [him] a steamer" on a named day, Inglefield's note is vertical in the margin, saying "Submitted for the information of the Commander in Chief, observing that the "Escort" has been lent for this service. / Dockyard, 3 Nov. 1875 ./ EA Inglefield AdmlSupt".

Four Autograph Letters Signed ('W. Marshall') to Messrs Bradley & Son Ltd[, The Crown Press, Printers, Caxton Road, Reading], giving formula for 'Spacine' ('for the prevention of rising spaces in Monotype') and instructions for its application.

W. Marshall, East Dulwich printer and inventor [Bradley & Son, Reading printers; Monotype; Spacine]
Publication details: 
30 Jan. [1929], 8 and 13 May 1929 and undated; the first three from 92 Upland Rd, East Dulwich, London, S.E.22.

The four items, all on aged and lightly spotted paper, are attached by four rusty staples. One (five pages, octavo): In reply to the firm's inquiry regarding 'the prevention of rising spaces in Monotype', Marshall states that, instead of giving information, he 'would rather send you the method and you try it out and prove for yourself its value, then pay me afterwards'.

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