Diaphone

He also invented the "Diaphone," now being used by the Canadian Government for its fog signal stations and declared to be the most powerful producer of musical sound known (in a modified form also adapted to the church organ).

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

In Fig. 29 will be found an illustration of the Diaphone (or valvular reed) used in the Hope-Jones organ at St. Paul's Cathedral, Buffalo, N. Y.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

In Fig. 24 we illustrate the Diaphone in the Hope-Jones organ built for

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

The invention of the Diaphone by Hope-Jones in 1894 will some day be regarded as the most important step in advance hitherto achieved in the art of organ building.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

When the valves V and V | 1 | are in the position shown in the drawing, the Diaphone is out of action, for the wind from the box B will find its way through the valve V (which is open) into the interior of the motor M.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

Figs. 25, 26, 27 represent the first Diaphone heard in a public building in this country, namely that of a model sounded in St. Patrick's Cathedral, New York City, in 1905.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

It will thus be obvious that the Diaphone will always be in perfect tune with the resonator or pipe P | 1 |, and that the pitch of the note may be altered by varying the length of the pipe.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

The tone given by this particular form of Diaphone possesses a peculiar sweetness in quality, while the power is limited only by the pressure of air used to operate it.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

Diaphone as a foundation, is shared by all who have had opportunity to judge.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller

Diapasons added to the instrument in Ocean Grove, N. J., or to that in the Baptist Temple, Philadelphia, and were the Diaphone removed, the instrument would suffer most seriously.

The Recent Revolution in Organ Building Being an Account of Modern Developments George Laing Miller