Allied Corporation

Allied Chemical Corporation

Wilbur L Stables

William Robert Weiss

James Judson Cooksey

David Pendlebury

Harry Lee Newell, Jr

Maxwell C Hamlyn

Anthony Michael Saich

Apparatus for determining the velocity of a gas in a gas supply duct is provided. The apparatus comprises a flow nozzle and a pitot tube. The flow nozzle has an inlet opening for receiving the gas and an outlet opening for expelling the gas after it has accelerated through a throat connecting the openings. The throat narrows in a curve from the inlet opening to outlet opening. The nozzle is mounted in the duct coaxially in a fluid-tight relationship therewith, the cross-sectional area of the duct and the cross-sectional area of the inlet opening being substantially identical. The cross-sectional area of the outlet opening is 40 to 60 percent that of the duct. The pitot tube comprises an impact tube and a static tube mounted in parallel through the duct downstream of the nozzle and both bending upstream toward the nozzle parallel to the duct axis. The opening of the impact tube is located in the volume bound by the cross-sectional area of the outlet opening and a distance of up to 6.25 percent of the duct inside diameter downstream of the outlet opening. The static tube has a plurality of apertures in the portion located in the volume bounded by the cross-sectional area of the outlet opening and a distance of up to 12.5 percent of the duct inside diameter downstream of the outlet opening.

Apparatus for measuring gas velocity

An apparatus for commingling yarn. The apparatus has an inner body having a yarn passageway with a diameter of about 1/4 inch to 5/16 inch. There are orifices through which a high pressure fluid such as air pass to the yarn passageway. The orifices have a diameter of about 0.060 to 0.80 inches.

Device having yarn passage of specified dimensions for interlacing

A muffler (10) for use in conjunction with an interfloor tube and aspirator (20) during the production of multifilament, synthetic yarn is provided. Audible noise which is emitted at the inlet end of the interfloor tube is reduced by up to 10 .DELTA.db(A) through the use of a perforated tube (11), restrictor plate (13) and sound absorbing material (16).

Interfloor tube aspirator inlet muffler

A muffler for use in conjunction with an interfloor tube and aspirating means during the production of multifilament, synthetic yarn is provided. Audible noise which is emitted at the exit end of the interfloor tube is reduced by up to 33.5 .DELTA.dB(A) and brought to within acceptable levels through the use of a perforated tube, resonant chambers, and sound absorbing means.

Interfloor tube aspirator muffler

A muffler for use in conjunction with an aspirator during the production of multifilament, synthetic yarn is provided. Audible noise which is emitted at the inlet end of the aspirator is reduced by up to 22.5 .DELTA.dB(A) and brought to within acceptable levels through the use of a perforated tube, resonant chamber, and sound absorbing means. The tension of the aspirated yarn is maintained by finishing the muffler inlet end with a high RMS surface.

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Matoaca, VA, United States of America

Wilbur L Stables