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A doffing gun for aspirating yarn includes a vacuum chamber tube threadably connected to an ejector handle body formed with a first bore axially aligned with the vacuum chamber and a second bore substantially perpendicular to the first bore. The first bore includes a mixing chamber into which air un

A doffing gun for aspirating yarn includes a vacuum chamber tube threadably connected to an ejector handle body formed with a first bore axially aligned with the vacuum chamber and a second bore substantially perpendicular to the first bore. The first bore includes a mixing chamber into which air under pressure is admitted through the second bore and a third bore which extends between the first and second bores. The third bore is oriented so that it enters the mixing chamber at an angle of about 15°to 30°from the longitudinal axis of the vacuum chamber tube and axially aligned first bore. Attached to the outlet or exhaust end of the ejector handle is a noise reduction means which, in turn, is connected to a diffusing nozzle and collection bag. The collection bag comprises upper and lower sections of tightly woven and open mesh materials, respectively.

대표청구항 ▼

A doffing gun for aspirating yarn comprising: (a) an ejector handle body having forward and rearward ends and formed with a first through bore extending along a longitudinal axis, a portion of said bore defining a mixing chamber, a second bore extending in a direction substantially perpendicular to

A doffing gun for aspirating yarn comprising: (a) an ejector handle body having forward and rearward ends and formed with a first through bore extending along a longitudinal axis, a portion of said bore defining a mixing chamber, a second bore extending in a direction substantially perpendicular to said mixing chamber, and adapted to be connected to a source of air under pressure, and a third bore interconnecting the mixing chamber and said second bore, the third bore entering the mixing chamber at an angle of between 15°and 30°from said longitudinal axis, said rearward end of said ejector handle body terminating in an exhaust throat having a diameter equal to that of said mixing chamber; (b) a vacuum chamber tube having a suction inlet at a forward free end thereof, and connected at a rearward end to said mixing chamber at the forward end of said ejector handle body, upstream of said draft tube, so that air under pressure delivered to said mixing chamber through said second and third bores establishes suction in said vacuum chamber tube; (c) noise reduction means connected at an inlet end to the rearward end of said ejector handle body and provided with a tubular passageway axially aligned with said first through bore; and (d) exhaust air diffuser means operatively connected to an outlet end of said noise reduction means.