| Date | Snippets |
|---|
| 1827 | Wheatstone move to 20,Conduit Street,Regent St, W. |
| 1829 | Charles Wheatstone gains 'Symphonium' patent. A concertina like
instrument is shown in the final figure, almost as an afterthought! |
| 1844 | Charles Wheatstone gains 'Improvements to Concertinas' patent.
The concertina is shown much as it is today.
Wheatstone publish the first known tutor for the English system
Instrucción para tocar la Concertina |
| 1846 | 'Instruction Book for the Use of Learners of the German
Concertina, of Twenty Keys and Ten Keys' by Carlo Minasi published. |
| 1847 | Wheatstone listed as 'William Wheatstone, Concertina Maker' |
| 1848 | John Nickolds with his sons and John Crabb leave Wheatstone to set up as concertina
makers |
| 1850 | Jabez Austin founds firm that is to become G.Jones |
| 1851 |
|
| 1856 |
|
| 1860 | John Crabb starts his business at 3, Spring Street, Clerkenwell. |
| 1861 | Death of Louis Lachenal.
Edward Chidley listed as an individual maker at 28 Store Street, Bedford Sq. |
| 1862 | Death of William Wheatstone. |
| 1866/8 | Wheatstone listed as 'Wheatstone & Co'. Edward Chidley
starts producing the concertinas sold by Wheatstone, characterised by their riveted reeds.
|
| 1870~ | Edward Chidley is operating from Wheatstones Conduit St.
premises as an 'Maker and Importer of Harmoniums,concertinas, etc.'.
Charles & Mary Ann Jeffries and family move to White Lion Passage, Edgware Road. |
| 1873 | Lachenal change from ,'Mrs. Elizabeth Lachenal, Concertina
Maker' to 'Lachenal & Co'. |
| 1875 | Death of Charles Wheatstone. |
| 1877~ | The Jeffries family move to 102 Praed Street. |
| 1878 | Lachenal trade mark registered. |
| 1884 | John Hill Maccann gains patent for his Duet system. |
| 1885 | Alsepti and Ballinger register patent for the Bowing Valve. |
| 1886 | 
|
| 1889 | Lachenal 'Edeophone' design registered |
| 1892~ | Jeffries business moves to 23 Praed Street. Charles &
Mary Ann and some other family members are already living in the Kilburn area |
| 1896 | Butterworth gains patent for 'Crane' Duet system. |
| 1899 | Wheatstone produce first eight sided 'Aeola' design.
Death of Edward Chidley Snr. The firm of Wheatstone passes to his sons
Edward and Percy. |
| 1902 | 'The aeola, in its present form, was produced by my
father in about 1902': K.V.Chidley writing c.1955 |
| 1905 | Wheatstone move to 15, West Street,Charing Cross |
| 1906 | Death of Charles Jeffries at Willesden.
Kenneth Chidley joins the family firm. |
| 1907 | 'JEDCertina' design registered |
| 1910~ | 'Jeffries Bros.' (Charles, William, George and Thomas) first appears in listings. |
| 1919 | Death of Mary Ann Jeffries. The Jeffries business splits up shortly afterwards. |
| 1924 | K.V. Chidley takes over as Production Manager at Wheatstone. |
| 1925~ | Charles Jeffries Junior is producing concertinas from his home at
12 Aldershot Road, Kilburn. They are stamped 'C.Jeffries' and often have
a reversed 'N' in the address stamp. |
| 1933 | Lachenal close down. |
| 1938 | Listing for
Jeffries Bros. 18, Lincoln Mews,Kilburn NW |
| 1941 | Death of Edward Chidley Jnr. Some of the Wheatstone
shareholding is acquired by Besson & Co. |
| 1945/6 |
Wheatstone move manufacture to Frederick Close,Stanhope Place.
Sales premises remain at West St.
|
| 1948 | Besson acquired by Boosey & Hawkes. |
| 1949 | Death of Percy Chidley |
| 1951 | Wheatstone move manufacture to Ives St,Chelsea |
| 1952 | International Concertina Association founded. |
| 1953 | Death of Charles Jeffries Junior. |
| 1955 | Wheatstone Mayfair model launched. |
| 1956~ | Wheatstone move all operations to Ives St |
| 1959 | Wheatstone move all operations to Duncan Terrace,Islington.
Thomas Jeffries operating from Willesden using the name 'Jeffries Bros.' |
| 1960 | Wheatstone Sales finish |
| 1961 | Boosey & Hawkes move Wheatstone manufacture to a workshop at Sonorous
Works, Edgware, the main B & H Factory |
| 1963 | Matusewich orders start for Wheatstone |
| 1964 | Death of Kenneth Chidley.
Death of Thomas Jeffries |
| 1974 | Wheatstone workshop scrapped by Boosey & Hawkes on death of Sid
Watkins (December) |
| 1975 | Wheatstone Company Sold to Steve Dickinson in
December |
| 1980 | Death of Gifford Chidley
31st Dec: Name changed from C. Wheatstone and Company Limited
to Boosey & Hawkes (Concertinas) Ltd
|
| 1981 | Death of Henry 'Harry' Crabb. | |
| 1990 | 3rd July: Boosey & Hawkes (Concertinas) Ltd company dissolved.
| |
