Patent GB-190813838-A (GB)
Title: Improvements in Organs.
Inventor: BRINDLEY CHARLES FREDERICK
Filed: 1908-06-30
Granted: 1909-06-03
Abstract: 13,838. Brindley, C. F. June 30. Organs.-In an organ, means are provided whereby the control of a department or departments may be transferred from one clavier to another, the department or departments, when so transferred, being wholly disconnected from the normal controlling clavier or claviers. To effect this transfer of control, mechanical, electrical, or pneumatic means are employed, which are put into operation by hand movement, by pneumatic means, or by pedals. The clavier A normally controls a register comprising departments 1, 2, and the clavier B controls a register comprising departments 3, 4. If a key of clavier A is depressed, wind is admitted through the tube 60 to a bellows 52<a> thereby opening the valve 57 and connecting a compartment c or d, according to the key which is depressed, to the wind-chest 49. If the compartment c is connected to the wind-chest, the wind passes through the duct 37, causing the valve 34 to close the tube 46, and through a tube 27 to a bellows in the department 2, corresponding to the bellows 23 in department 1. This bellows expands, disconnecting a bellows, corresponding to the bellows 21, from the wind-chest a and connecting it to atmosphere so that it collapses, thereby causing a pipe or pipes to speak. If a key in connexion with department 1 is depressed, wind passes from the chest 49 through compartment d, duct 41, and tubes 45, 25 to the bellows 23, causing the valve 33 to close the duct 39 in its course. The bellows 23 expands, causing a pipe or pipes to speak in the manner previously described. The keys of the clavier B control the pipes of the departments 3, 4 in a similar manner. The pipes of the registers controlled by the claviers A, B are unaffected by the depression of a key of clavier C, which normally controls another register. If, however, it is desired to transfer the control of say department 4 from clavier B to clavier C, a translator is operated in order to admit wind through the tube 109 to the bellows 105, causing it to expand and connect the channel 84 to the wind-chest 102. The valves 74 are operated by the bellows 75 to connect the ducts 44 with the compartments k of the intermedian chamber 12, so that if a key of clavier C is depressed, wind passes to a bellows 56, operating the valve 59, so that wind passes from the wind-chest 51, through the compartment k, duct 44, tubes 48, 31, to operate valves controlling a pipe or pipes in the department 4. In its course, the pipe causes the valve 36 to close the duct 38. The department 4 is disconnected from the clavier B owing to the action of the valve 66, which disconnects the ducts 38 from the compartments e owing to the collapse of the bellows 67, which are connected to atmosphere by the operation of the valve 95 controlled by the bellows 90. The control of the other departments may be transferred to the clavier C by admitting wind to the tubes 108, 110, or 111. In a modification, there are two claviers each controlling two departments, and the control of one of the two departments controlled by each clavier can be transferred to the other clavier.