BRUNEL (MARC ISAMBARD) Autograph designs and engineering drawings for bridges
Lot 79
BRUNEL (MARC ISAMBARD)
Autograph designs and engineering drawings for bridges
Sold for £10,625 (US$ 14,213) inc. premium

Lot Details
BRUNEL (MARC ISAMBARD)
Autograph designs and engineering drawings for bridges, comprising:

(i) Sheet of designs annotated by Brunel in his minute calligraphic hand and dated by him "31 July 1819", comprising a "Transverse Section of a Bridge on a great span", "Transverse section of a Bridge by Suspension", two elevations (one marked "This Elevation corresponds with the Transverse Section A"), and engineering drawings showing rods and the manner in which they should be secured ("These holes should be very long so as to admit of adjust.t"), one transverse section showing a carriage, another a pedestrian, another a man and boy; captioned in another hand "Transverse Section of a Bridge by Trussing & Suspension", pen, ink and grey wash, with additional or preliminary studies in pencil, on paper, centre-fold, some dust-staining, creases and tears in the margin, but nevertheless still in attractive and sound condition, c.580 x 680mm., archival mount, 31 July 1819

(ii) Watercolour design of a suspension bridge, showing traffic passing over it (including a coach, pedestrians, man with a ladder, hay-wain and troop of soldiers led by officers on horseback), plus pencil sketches, indistinctly annotated below in pencil [?] "Deflection 12 6 1", on one sheet of wove paper, light dust-staining, a few glue-stains, especially verso, 210 x 305mm., undated

(iii) Two engravings of Brunel's iron suspension Bridge for the Isle of Bourbon (Réunion), marked-up; plus a steel engraving of the brickwork on London Bridge, the Réunion designs on wove paper, minor stains, tears etc., each c.230 x 550mm, one in archival mount

Footnotes

  • The two Réunion engravings are reproduced by Stephen Brindle, with the note: 'Marc Brunel's design for one of two suspension bridges commissioned by the French government and built on the Ȋle de Bourbon, now known as Réunion, in the Indian Ocean, 1822-4. The ironwork was manufactured in Sheffield, and Isambard had to make several journeys to supervise the work before it was finally shipped out in November 1823' (Brunel: The Man who Built the World, 2005, pp.48-9). One of the engravings bears a small engineering design in pencil, with measurements, and, in ink, a note of costings ("£36 per Ton/ cost £2,500/ 350 feet long"). A decade later, Marc Isambard was to play a major part in drawing up his son's designs for the Clifton Suspension Bridge.
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