The Recent Revolution in Organ Building | Page 7

of Hanterire, near Toulouse, improved on Moitessier's action by combining tubes conveying compressed air with the Barker lever. An organ was built on this system for the Paris Exhibition of 1867, which came under the notice of Henry Willis, by which he was so struck that he was stimulated to experiment and develop his action, which culminated in the St. Paul's organ in 1872. (From article by Dr. Gabriel Bédart in Musical Opinion, London, July, 1908.)
CHAPTER IV.
PNEUMATIC AND ELECTRO-PNEUMATIC ACTIONS.
Undoubtedly the first improvements to be named must be the pneumatic and electro-pneumatic actions.
Without the use of these actions most of the advances we are about to chronicle would not have been effected.
As before stated, Cavaillé-Coll and Willis worked as pioneers in perfecting and in introducing the pneumatic action.
The pneumatic action used by Willis, Cavaillé-Coll and a score of other builders leaves little to be desired. It is thoroughly reliable and, where the keys are located close by the organ, is fairly prompt both in attack and repetition. Many of the pneumatic actions made to-day, however, are disappointing in these particulars.
TUBULAR PNEUMATICS.[1]
In the year 1872 Henry Willis built an organ for St. Paul's Cathedral, London, which was divided in two portions, one on each side of the junction of the Choir with the Dome at an elevation of about thirty feet from the floor. The keyboards were placed inside one portion of the instrument, and instead of carrying trackers down and under the floor and up to the other side, as had hitherto been the custom in such cases, he made the connection by means of tubes like gaspipes, and made a pulse of wind travel down and across and up and into the pneumatic levers controlling the pipes and stops. Sir John Stainer describes it as "a triumph of mechanical skill." He was organist of St. Paul's for many years and ought to know. This was all very well for a cathedral, where
". . . . the long-drawn aisles The melodious strains prolong"
but here is what the eminent English organist, W. T. Best, said about tubular pneumatic action as applied to another organ used for concert purposes: "It is a complete failure; you cannot play a triplet on the Trumpet, and I consider it the most d----nable invention ever placed inside an organ." Notwithstanding these drawbacks this action became very fashionable after its demonstration at St. Paul's, and was used even in small organs in preference to the Barker lever. One builder confessed to the writer that he had suffered severe financial loss through installing this action. After expending considerable time (and time is money) in getting it to work right, the whole thing would be upset when the sexton started up the heating apparatus. The writer is acquainted with organs in New York City where these same conditions prevail.
The writer, however, will admit having seen some tubular actions which were fairly satisfactory, one in particular in the factory of Alfred Monk, London, England, where for demonstration purposes the tubes were fifty feet long. Dr. Bédart informs us that Puget, the famous organ builder of Toulouse, France, sets fifty feet as the limit of usefulness of this action.
Henry Willis & Sons in their description of the organ in the Lady Chapel of Liverpool Cathedral state that their action has been tested to a repetition of 1,000 per minute, quicker than any human finger can move. This is a square organ in one case, but we note they have adopted the electric action for the great cathedral organ where the distance of the pipes from the keys is too great for satisfactory response.
In view of the wide use at present of this action we give a drawing and description of its operation as patented and made by Mr. J. J. Binns, of Bramley, Leeds, England. J. Matthews, in his "Handbook of the Organ," says that this action is very good and free from drawbacks.
[Illustration: Fig. 5. Tubular Pneumatic Action]
The tubes, N, from each key are fixed to the hole connected to the small puffs P in the puff-board E. Air under pressure is admitted by the key action and conveyed by the tubes N which raises the corresponding button valves S|1|, lifting their spindles S and closing the apertures T|2| in the bottom of the wind-chest A, and opening a similar aperture T in the bottom of the cover-board F, causing the compressed air to escape from the exhaust bellows M, which closes, raising the solid valve H in the cover-board F and closing the aperture J|1| in the wind-chest A, shuts off the air from the bellows, which immediately closes, drawing down the pallet B, which admits air (or wind) to the pipes.
No tubular-pneumatic action is entirely satisfactory when the distance between the keys and the organ is great. This