Valve trumpet. Nominal pitch: F etc.

T Key

Instrument

Valve trumpet

Instrument Family

Wind

Maker

T Key

Place Made

London; United Kingdom; England; Europe

Date Made

Circa 1850

Description

3 valves. Technical description: Brass; crooks all single-coil. The first and second valve tuning-slides are not interchangeable, one having moving inner slides and the other moving outer slides. Valve type: 3 Stölzel valves. Overall size: 360 (without crooks or mouthpiece); bell 115. Sounding length: without shanks or crooks, minimum 1754; overall air column lengths of E crook 159; E♭ crook 245; D crook 379; C crook 658. Bore: at c 37mm from mouthpiece receiver (minimum bore), 11.1; m.t.s. bore 11.2 11.3; at 877mm from bell end, c 11.4; v.t.s. bore (3,2,1) 11.4; at c 268mm from bell end, 16.1; at 11.5mm from bell end, 75.6. B = 0.77 (crooked in F); B = 0.79 (crooked in D). Bell cutoff = 1500 Hz. Dia of mouthpiece receiver: taper on instrument body to receive crooks, bits or mouthpiece 12.0 - 11.4. Inscribed on bell garland "KEY / 20 Charing Cross / LONDON". Decorative features: Repoussé stylised foliage on bell garland; barley twist embellishment on mouthpipe. Playing accessories: Crooks for E, Eb, D, C. Bell slightly crumpled just under the garland. Performance characteristics: High notes hard with mouthpiece (650); D crook less well in tune than the others. The input impedance and harmonicity of the air-column resonances are reported in Myers and Campbell 2006. Usable pitch: Plays c 50 cents above A⁴ 440 Hz. Purchased with, possibly formerly used with and possibly supplied by manufacturer with mouthpiece (650). Specific literature references: G.S. (1958) No. 56; G.S. (1968) No. 323; G.S. (1986) No. 153. Illustration references: G.S. (1968) Plate XVIII (3); G.S. (1986) No. 153.

Notes

Arnold Myers; L. Haigh, 23.9.85; R. Parks, 14.3.92.

Measurements

360 (without crooks or mouthpiece); bell 115.

Provenance

Purchased in 1983 with assistance from the Government's Local Museums Purchase Fund and the University's General Council Trust.

Collection

Glen Collection; MIMEd

Accession Number

0226