Carding engines
AssigneeCarding Specialists (Canada) Limited
InventorJohn M. J. Varga
Life of this patent
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Abstract
In a duo-card engine, a novel arrangement of crush rolls and toothed roller are used to break up the fibre web into individual fibres and fibre groups to free them from dirt, after which the fibres are reassembled on the surface of a perforated vacuum cage adjacent to and downstream of the toothed roller. This sequence of operations produces a yarn, not only of more regular texture but yarn in which the amount of trash, dust and small fibres can be reduced substantially by one half.
Claims7
A duo-card engine comprising a breaker card having a breaker carding cylinder, means for feeding staple fibres to the breaker cylinder, a breaker doffer for doffing a web of fibres from the breaker cylinder, a pair of crush rolls downstream of the breaker doffer, a toothed roller downstream of the pair of crush rolls, rotating at a surface speed sufficient to break up the web substantially into individual fibres and fibre groups and free dirt from the same, a partly shrouded, rotatable, perforated vacuum cage adjacent to and downstream of the toothed roller, on the surface of which the fibres are reassembled, means for feeding the fibres from the cage to the cylinder of a finisher card, and a finisher doffer for doffing the web from the finisher cylinder.
Dependencies are inferred from the claim text.