Proper noun
Blaikley
A surname.
The most popular of the automatic compensation systems was invented by Blaikley (Bevan, 1978) and was patented by Boosey (later, Boosey and Hawkes, which also, later still, produced Besson instruments). Source: Internet
The Blaikley design plumbs the instrument so that if the fourth valve is used, the air is sent back through a second set of branches in the first three valves to compensate for the combination of valves. Source: Internet