Pneumatic crossbar device

Claim 2

A pneumatic crossbar device comprising a plurality of inflatable flexible tubes, each tube being sealed at one end thereof, said tubes being arranged in two adjacent parallel planes with the tubes in each plane being disposed parallel to each other and at right angles to the tubes of the other plane, fluid pressure source means and a plurality of individual fluid control means fluidicaLly connecting the other end of each of said tubes with said fluid pressure source means for selectively controlling inflation and deflation of each of said tubes to provide specific inflation characteristics at selected crossover points.

Claim 3

A pneumatic crossbar device as claimed in claim 1, further comprising a plurality of multiposition switch means positioned at the intersections of said tubes for actuation upon inflation of said tubes, a first position of said switch means being obtained when both of said tubes at an intersection are deflated, a second position of said switch means being obtained when one of said tubes is inflated and the other of said tubes at an intersection is deflated, and a third position of said switch being obtained when both of said tubes at an intersection are inflated; the inflation and deflation of said tubes being controlled by said individual fluid control means connected thereto.

Claim 4

A pneumatic crossbar device as claimed in claim 1, wherein each of said individual fluid control means comprises a valve body having a first passage therein, one end of said first passage being connected to said fluid pressure source means and the other end of said first passage being open to the atmosphere, a second passage intersecting said fluid passage in said valve body, said second passage being in fluid communication with one of said tubes, a valve disc located in said first passage and being connected to a valve stem extending beyond said valve body for selective engagement with said valve body on opposite sides of said second passage for selectively connecting said second passage with said fluid pressure source means for inflation of said tube and with said opening exposed to the atmosphere for deflating said tubes.

Claim 5

A pneumatic crossbar device as set forth in claim 3, wherein said valve stem is operatively connected to electromagnetic actuating means.

Claim 6

A pneumatic crossbar device as set forth in claim 3, wherein said valve stem is arranged for manual operation.

Claim 7

A pneumatic crossbar device for controlling the flow of air to the pipes of a pneumatically operated organ of the type having a pressurized chamber, said crossbar device comprising a plurality of flexible inflatable tubes located within said pressurized chamber of an organ, said flexible tubes being positioned in two adjacent, parallel planes with the tubes located in each plane being disposed parallel to one another and at right angles to the tubes of the other plane, the intersections of said tubes being located adjacent to and spaced from openings in said pressurized chamber, a plurality of organ pipes being positioned above the openings in said chamber for actuation by air pressure delivered through said openings, a support means positioned below said intersections of said tubes to retain said tubes adjacent said openings, the spacing between said support means and said openings being such that when both of said tubes at an intersection are deflated, communication is obtained between said chamber and the opening adjacent said intersection and when one of said tubes is inflated said opening is closed by said tubes, each of said tubes having one end thereof sealed and the other end thereof fluidically connected to individual fluid control means, actuating means for operating each of said valve means, a pneumatic pressure source means connected to said pressurized chamber and with each of said valve means for supplying pneumatic pressure to said pressurized chamber and to said flexible inflatable tubes.

Claim 8

A pneumatic crossbar device for controlling the flow of air to the pipes of a pneumatically operated organ of the type having a pressurized chamber, said crossbar device comprising a plurality of flexible inflatable tubes located within said pressurized chamber of an organ, said flexible tubes being positioned in two adjacent, parallel planes with the tubes located in each plane being disposed parallel to one another and at right angles to the tubes of the other plane, the intersections of said tubes being located adjacent to and spaced from openings in said pressurized chamber, a plurality of organ pipes being positioned above the openings in said chamber for actuation by air pressure delivered through said openings, a support means positioned below said intersections of said tubes to retain said tubes adjacent said openings, the spacing between said support means and said openings being such that when both of said tubes at an intersection are deflated, communication is obtained between said chamber and the opening adjacent said intersection and when one of said tubes is inflated said opening is closed by said tubes, each of said tubes having one end thereof sealed and the other end thereof fluidically connected to individual fluid control means, actuating means for operating each of said valve means, a pneumatic pressure source means connected to said pressurized chamber and with each of said valve means for supplying pneumatic pressure to said pressurized chamber and to said flexible inflatable tubes.