Four bar manifold

Claim 1

A manifold for uniformly and equally distributing gas to each of a plurality of burn bar torches for burning holes in objects comprising: a body member having at least one face, said body member further including; a central plenum chamber having an inlet for receiving the gas, a plurality of equally spaced radially extending cross passages, each of said passages having one end connected to said plenum chamber for carrying the gas out of said plenum chamber, a plurality of orifices, each of said orifices having an inlet end connected to one of said respective cross passages and extending from said cross passage in perpendicular relation to said body face for receiving the flow of gas from said cross passage, said orifices adapted to maintain sonic gas flow therethrough, a plurality of outlet chambers, each of said outlet chambers having an inlet end connected in co-axial relationship to one of said respective orifices and extending perpendicularly to said face for receiving the flow of gas from said orifices and for distributing the gas to the burn bar torches, said outlet chambers adapted to receive the burn bar torches whereby, the flow of gas is distributed uniformly and equally to each of the burn bar torches and the burn bar torches burn holes of equal size in the object.