Horn and Whistle Forum International

Here's a Nathan P5 drawing.

Dated 1999

April 1950 schematic. Predecessor to the M5

Some computer graphic illustrations I made several years ago of Nathan Airchime M, P, K series pneumatic horns.

Some computer graphic illustrations I made several years ago of Leslie S and RS chambers

Drawings of one of the rarer Leslie horns.

Document details the operation of the Leslie 'S' power chambers

Nathan K5 Drawing

Great informative document authored by Eric Larson and the late Fred Berry. Goes into great detail about the inner workings of a pneumatic horn.

Two great documents authored by Deanne Ellsworth in October - November 1974, detailing Leslie, Hancock, Nathan, Wabco etc.