Books › A descriptive catalogue of the musical instruments recently exhibited at the Royal Military Exhibition, London, 1890 …, 1891 › scan 210
Scan 210
A descriptive catalogue of the musical instruments recently exhibited at the Royal Military Exhibition, London, 1890 …, 1891
14 lines. Read by computer on 1 October 2026. Printed page 190. See the scan on archive.org.
1tubings, gave eight dependent positions; as compared with the patent of 1857, the number of openings in the pump were considerably reduced, and the disposition of the passages gave greater freedom for the air column. An illustration of a euphonion thus constructed will be found upon page 209. The transpositeur met with success, and was patented in England in 1859. Various infringements were made upon the system, and the idea was largely made use of by various makers.
3In 1874 M. Léon Cousin patented in France a system somewhat similar to the six-piston arrangement of Sax, but in which the sixth piston is dispensed with. In M. Cousin's instrument the pistons are made descending, and produce the following scale:—
5[Music notation: Open, 1st, 2nd, 3rd, 4th, 5th]
7The pistons, however, are so constructed that they can be used in combination, hence the note c'♯, wanting in the above series, is produced by the combination of the second and fifth valves, and the compass of the instrument can be extended, by using combinations of valves, downwards chromatically to c♯; there is, of course, no compensation for valves used in combination.
9Passing by a device, invented about 1874 by M. Thibouville-Lamy, of Paris, in which, by means of two keys placed upon the bell, the length of the wind column is adjusted to the theoretical length required for the production of the harmonic series produced by combinations of valves, we arrive at the first really automatic arrangement for ensuring this result.
11This most ingenious device was invented in 1874 by Mr. D. J. Blaikley, and perfected and patented by him four years later. It consists in a peculiar construction of the valves, by which, when two or three pistons are employed in conjunction, the length of the air column is adjusted automatically to the exact theoretical length required to ensure absolutely correct intonation.
13The improvements, by which this is effected, consist in passing the tubing connected with the third valve through the first and second
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