Patent GB-136937-A (GB)
Title: A New or Improved Wind Musical Instrument.
Inventor: BRINDLEY CHARLES FREDERICK
IPC: G10B3/10
Filed: 1919-01-15
Abstract: 136,937. Brindley, C. F. Jan. 15, 1919. Organs; stop and combination actions; combined with pianofortes.-An organ has one or more keyboards, two or more tonal departments, of which the individual members are controlled by stops, and three or more transition controllers, one of which sets the instrument so that any one of the tonal departments may be used and may be superseded by another, and the others of which set the instrument so that one only of the tonal departments may be used. The instrument shown has three tonal departments. The first of these is controlled by two rows of stops B and produces the effects of a solo controlled by the upper row of stops and an accompaniment controlled by the lower. The second department is controlled by stops C and produces an ensemble effect of one or more instruments played in parts, and the third department is controlled by stops D and produces the effect of a variable grouping of instruments. Four transition controliers are actuated by pedals Z, E, F, G. Depression of the pedal Z enables any tonal department to be used; on drawing a stop in the second department, the first department is put out of action, and on drawing a stop in the third department, the first and second are put out of action. Depression of the pedals E, F, G limits the performer to the first, second, and third tonal departments respectively. Depression of the pedal Z connects a motor bellows 7 to a windchest 15, Fig. 2, by a pipe 16. The bellows 7 thereupon actuates a double valve 11 which connects a chamber 3 to a wind-chest 1 and shuts off connexion with a chamber 2 open to the atmosphere. The chamber 3 is connected to chambers 27, 28 by pipes 25, 26 and, by a pipe 21, with a valve casing 19, Fig. 2, through which it communicates with the motor bellows 10. The valve casing 19 contains a blow-to valve 20, which controls the connexion of one of two pipes with the bellows 10. Motor bellows 8, 9 are connected through similar valves 19 and pipes 37, 35 with casings 36, 29, which are connected by valves 34, 33 with the chambers 27, 28. The bellows 8, 9, 10 are therefore operated, and actuate the double valves 12, 13, 14, whereby chambers 4, 5, 6 are connected to the wind-chest 1. The chambers 4, 5, 6 are connected by wind. ducts 22, 23, 24 with wind-chests controlled by stops B, C, D respectively. When a stop B is drawn, a motor bellows 41 actuates a double valve 44 which places the wind-chest 38 in communication with the first tonal department through a pipe 50. When a stop C is drawn, the motor bellows 42 operates a double valve 45, placing the wind-chest 38 in communication with the second tonal department through a pipe 51 and also, through a pipe 52, bar L, and pipe 53, with a motor bellows 32, which thereupon actuates the double valve 34, shutting off the casing 36 from the chamber 27 and connecting it to the chamber 30, which is open to atmosphere. The bellows 8 is thereby connected to atmosphere, and shuts off the wind-duct 22 from the wind-chest 1, thereby putting the first tonal department out of operation. When a stop D is drawn, a valve 46 is operated by a bellows 43, placing the windchest 38 in communication by a pipe 63 with a bellows 57 which actuates a valve 61 placing a wind-chest 59 in communication with the third tonal department. The wind-chest 38 is also connected by a pipe 62 to the bar L, and thence by a pipe 64 to the bellows 31 and by a pipe 56 to the bellows 32, a blow-to valve controlling the connexion of the pipes 53, 56 to the bellows 32. Both bellows 31, 32 are thereby actuated, causing deflation of the bellows 8. 9 and closing communication between the wind-ducts 22, 23 and the wind-chest 1. The first and second tonal departments are thereby rendered inoperative. When the pedal E is depressed, the pedal Z is raised, and wind is admitted from the wind-chest 15. Fig. 2, through a pipe 18 to the bellows 8, thereby bringing the first tonal department into operation. Similarly, depression of the pedals F, G brings the second and third tonal departments respectively into operation. The instrument may be combined with a string percussion instrument such as a grand piano.