Anti-balloon device for weft feeders for weaving looms
AssigneeL.G.L. Electronics S.p.A.
InventorsPietro Zenoni, Rosario Castelli
Life of this patent
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Abstract
An anti-balloon device, to be placed downstream of a weft feeder for weaving looms, comprising a structure which forms a substantially tubular through cavity, preferably substantially frustum-shaped; the cavity is crossed by an unwinding thread that arrives from the weft feeder and controls the passage of the thread, by opposing the centrifugal force that affects it. The structure is shaped like a bottomless basket which is formed by rods lying longitudinally between end elements which connect the rods; the end elements are end rings which are mutually angularly spaced so as to surround the cavity in order to control the passage of the thread.
Claims21
An anti-balloon device, to be placed downstream of a textile weft feeder for weaving looms, comprising a structure which forms a substantially tubular through cavity which is substantially frustum-shaped and for being crossed by an unwinding thread coming from said feeder and for controlling the passage of the thread through said cavity, opposing the centrifugal force that affects said thread, wherein said structure is shaped like a bottomless basket which comprises formations of rods lying longitudinally with respect to said tubular shape of said through cavity, said formations of rods being angularly spaced around said tubular through cavity in order to circumscribe said cavity in a grid-like fashion and control the passage of said thread through said cavity, connecting formations being also provided in order to mutually join said longitudinally extending rods, and wherein the cylindrical rods have a lens-shaped profile in cross section.
A textile weft feeder for weaving looms, comprising a drum and a swiveling arm that winds a plurality of turns of thread on the drum, an anti-balloon device being arranged downstream of said drum, said anti-balloon device comprising a structure which forms a substantially tubular through cavity which is substantially frustum-shaped for being crossed by a unwinding thread coming from said feeder and is for controlling the passage of the thread through said cavity, opposing the centrifugal force that affects said thread, wherein said structure is shaped like a bottomless basket which comprises formations of rods lying longitudinally with respect to said tubular shape of said through cavity, said formations of rods being angularly spaced around said tubular through cavity in order to circumscribe said cavity in a grid-like fashion and control the passage of said thread through said cavity, connecting formations being also provided in order to mutually join said longitudinally extending rods.
Dependencies are inferred from the claim text.