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US 4,397,137 AGranted
Pneumatic yarn splicing
AssigneePentwyn Precision, Ltd.
InventorsGerald B. Davies, Roger J. Shea
Life of this patent
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AssigneePentwyn Precision, Ltd.
InventorsGerald B. Davies, Roger J. Shea
Estimating the term…
Yarn splicing chambers which in one form comprise a block with an open channel therethrough, one wall of the channel being vertical and the other inclined to form an included angle of between 30.degree. to 45.degree. . An inlet is provided centrally of the bottom of the channel for admission thereto of gas under pressure of 5.5 bars to produce vortex flow having a predominant direction of rotation when, in use, the open top of the channel is sealed by a shutter, the gas exhausting out of the open ends of the channel into which yarns are introduced for splicing. An alternative form of chamber comprises a block having an open channel therethrough wherein each wall of the channel comprises a first wall portion substantially vertical with respect to a flat bottom portion of the channel at respective end portions of the channel, and a second wall portion inclined with respect to the said flat bottom portion, and the inlet means is located within the central portion of the channel. Other forms of chamber include blocks having V-channels with two small holes in the base of the channel tangential to a blind bore in the block forming the inlet for high pressure gas.
A yarn splicing chamber for use in pneumatic yarn splicing apparatus, comprising a block for receiving the ends of the yarns to be spliced having a longitudinal channel of asymmetrical configuration about its axis and being open at its top, inlet means for the admission of gas under pressure to the channel, and means for sealing said channel at the top thereof to form outlets at opposed ends of said channel, whereby a vortex flow having a predominant direction of rotation is created in gas admitted through the inlet means as it passes towards said outlets to be exhausted therefrom.
A yarn splicing chamber for use in pneumatic yarn splicing apparatus, comprising a block defining a channel therethrough for receiving the ends of yarns to be spliced, and inlet means for admission of gas under pressure to a central portion of said channel, the channel comprising a flat bottom portion, a first wall at between 0.degree. and 5.degree. to the vertical with respect to the flat bottom portion and a second wall inclined between 30.degree. and 75.degree. to said flat bottom portion, and said inlet means including at least one opening into said flat bottom portion to create vortex flow having a predominant direction of rotation as, in use, gas under pressure is admitted to said chamber through said opening with the open top of said channel sealed by a shutter.
A yarn splicing chamber for use in pneumatic yarn splicing apparatus, comprising a block defining a V-shaped channel therethrough to receive the ends of yarns to be spliced, said channel having a substantially flat bottom at least along the central portion thereof, inlet means for admission of gas under pressure to said channel, a shutter for closing the open top of said channel, and at least two holes in said flat bottom, said inlet means including a blind bore and said holes being tangential to said bore so that in use of the chamber with the shutter sealing the top of said channel vortices having a predominant direction of rotation are produced by gas issuing from said two holes into said channel.
Dependencies are inferred from the claim text.