The archive collection
The personal archives of the inventor of the Citroën hydropneumatic suspension — digitised, transcribed page by page, explained.
Try: hydropneumatic suspension · patent · DS
- catalogued archives
- 584
- transcribed pages
- 1634
- from the digitised collection
- 7,14 %
- period-covered
- 1908–2019
7.14% of the archives digitised and analysed — the work continues, box after box.
Featured items
The entire collection
1946 technical note on the automatic height adjustment and stabilisation device
PM-0514 · 16 October 1946
Hydropneumatic suspension with automatic levelling (1944)
PM-0564 · 17 February 1944
Hydropneumatic suspension plans with differential interaction (17 February 1944)
PM-0319 · 17 February 1944
Ride height correction project: parallel-to-road and pendulum diagrams (1944)
PM-0494 · 11 January 1944
Notebook of the first 2 CV hydropneumatic suspension tests (May-July 1946)
PM-0326 · May-July 1946
Magès Minute: why a liquid spring cannot replace hydropneumatics (6 March 1961)
PM-0184 · 6 March 1961
The collections of the archive
A century of mechanics
Complete chronology1900
2 dated archives
Louis Renault Patent No. 392,320 (1908): progressive hydraulic gear change
1920
2 dated archives
Comparative sketches of mechanisms dated 1921 and 1931
1930
29 dated archives
German Patent No. 502623 (1930) — Elastic chassis suspension by Georges Messier
1940
62 dated archives
Pedal car project — sketches and dimensions (1940)
1950
174 dated archives
Motorhome on Citroën Type H van — photographic report (1950-1955)
1960
103 dated archives
Manuscript summary of hydrostatic transmission tests (1955-1960)
1970
86 dated archives
Diploma of the 1970 Grand Prix of Art and Industry awarded to Paul Magès
1980
11 dated archives
Commemoration programme for the submarine Eurydice, Ramatuelle, 9 March 1980
1990
24 dated archives
Presentation of the "Cahiers Experts de l'Hydraulique" — CIFC distance learning
2000
1 dated archive
Letter from Roger Brioult to Michel Magès regarding publication authorisation (2000)
2010
4 dated archives
“Birth of a myth”: the DS 19 as seen by L'Auto-Journal (2013)
Register of latest additions
Catalogue updated continuously, box after box.
The scientific approach
Faithful transcription
Each page is transcribed verbatim, period spelling preserved. Doubtful passages are marked [uncertain], illegible passages [illegible].
Cataloguing
The digitised boxes are divided into individual archives — a letter, a plan, a report — dated with the precision actually attested: day, month, year or decade.
Analysis and context
Each archive is explained and contextualised, always distinguishing what the document says (cited page by page) from the general historical context.
Reader's visa
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