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The axial flow valve, or Thayer valve, is a brass instrument valve design patented in 1978 by American inventor Orla Ed Thayer. [1] Designed with assistance from instrument maker Zigmant Kanstul, it was originally intended to replace the traditional rotary valve on the French horn , but instead revolutionized the design of trombone valve ...
This reduces acoustic impedance effects, providing a more open "feel" for the player and a "crisper" tone more similar to a standard trombone. [4] While the Hagmann valve does not achieve the low 20–25° angle of deflection in axial flow valves, it is still about as free-blowing and, being otherwise substantially similar to a standard rotary ...
Axial flow valve in default (A) and engaged (B) positions. 1. airflow, from mouthpiece; 2. airflow, to bell; 3. valve tubing; 4. valve casing; 5. conical rotor; 6. input (a) and return (b) valve ports; 7. spindle axis of rotation. Axial flow valves are an alternative for the traditional rotary valve found on trombones with valve attachments.
The valve trombone emerged concurrently with the invention of valves in the early 19th century. Most early instruments retained the shape and form of the slide trombone, employing three valves with the tubing arranged in place of the slide; others used the new valve mechanism as an opportunity to explore different configurations while retaining the overall cylindrical bore and bell profile.
The most common type of valve seen for valve attachments is the rotary valve, appearing on most band instruments, as well as most student and intermediate model trombones. Many improvements of the rotary valve, as well as entirely new and radically different valve designs, have been invented since the mid 20th century to give the trombone a ...
The bell of an F. E. Olds trombone, c. 1927, with the trademark "Golden Bear" and date of the 1912 patent. F. E. Olds was a manufacturer of musical instruments founded by Frank Ellsworth (F. E.) Olds in Fullerton, California, in the early 1900s. The company made brass instruments, especially trombones, cornets, and trumpets.
The Superbone can be played as a slide trombone, a valve trombone, or in combination. Using the slide and valves in combination requires the slide positions to be adjusted, just as when using the trigger of an F attachment on a tenor or bass trombone. Using the slide with the first and third valves engaged has the same effect as using an F ...
It was originally designed to be used as a marching trombone, and has valves rather than a slide thus superficially resembles a tenor horn or euphonium. [1] It was used by the University of Southern California Marching Band [ 1 ] and on a handful of jazz recordings (e.g., Jay and Kai + 6 ).
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