Abstract A lap forming apparatus in which loose fibers are directed through a chute to a rotating condenser screen or drum by engaging the mass of fibers between a pair of rotating feed rolls adjacent the terminal end of the chute and directing the mass of fibers from the feed rolls through a passageway which terminates in a fiber density control zone alongside of the condenser drum and through which a suction air flow is effected into the condenser drum. The fibers are advanced and compacted against the drum at a compacting zone downstream of the control zone, and the density of the mass of fibers being fed into the compacting zone is controlled by sensing variations in suction pressure as effected by variations in the density of the mass of fibers in the control zone relative to a desired predetermined density, and the rate of suction air flow through the condenser drum is compensatively varied in response to the sensed variations in the suction pressure so as to carry forward with the condenser drum a uniform amount of fibers from the control zone for forming a lap of substantially uniform density therefrom in the compacting zone.
Inventors
👤 Iii Daniel G Rowe
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-31 18:06
CPC Classifications
D; D01; D01G; D01G23/00; D01G23/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
252 words
Apparatus for forming a lap of textile fibers comprising a chute adapted to receive a mass of loose fibers therein, a rotary condenser drum having a substantially cylindrical foraminate wall, duct means for directing fibers from said chute to said condenser drum and defining with said foraminate wall a fiber density control zone alongside of said condenser drum, spaced rotary feed rolls adjacent the terminal end of said chute for feeding fibers from said chute into said duct means, suction means for effecting a suction air flow through said control zone and into said condenser drum, means adjacent and downstream of said control zone for compacting the fibers against said wall of said condenser drum to form a lap thereof, means for sensing variations in suction pressure as caused by variations in density of the fibers in the control zone relative to a predetermined density, means responsive to said sensing means sensing said variations in suction pressure for compensatively varying the rate of the suction air flow through said control zone and said condenser drum so that said condenser drum will carry a substantially uniform amount of fibers therewith from said control zone to said compacting means to form a lap of substantially uniform density, means for driving said feed rolls, and means operatively connected to said driving means and responsive to said sensing means sensing said variations in suction pressure for compensatively varying the rate of rotation of said feed rolls to aid in forming the lap of substantially uniform density.
Claim 2
Dependent Claim
252 words
Apparatus for forming a lap of textile fibers comprising a chute adapted to receive a mass of loose fibers therein, a rotary condenser drum having a substantially cylindrical foraminate wall, duct means for directing fibers from said chute to said condenser drum and defining with said foraminate wall a fiber density control zone alongside of said condenser drum, spaced rotary feed rolls adjacent the terminal end of said chute for feeding fibers from said chute into said duct means, suction means for effecting a suction air flow through said control zone and into said condenser drum, means adjacent and downstream of said control zone for compacting the fibers against said wall of said condenser drum to form a lap thereof, means for sensing variations in suction pressure as caused by variations in density of the fibers in the control zone relative to a predetermined density, means responsive to said sensing means sensing said variations in suction pressure for compensatively varying the rate of the suction air flow through said control zone and said condenser drum so that said condenser drum will carry a substantially uniform amount of fibers therewith from said control zone to said compacting means to form a lap of substantially uniform density, means for driving said feed rolls, and means operatively connected to said driving means and responsive to said sensing means sensing said variations in suction pressure for compensatively varying the rate of rotation of said feed rolls to aid in forming the lap of substantially uniform density.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1 wherein said means for driving said rolls includes a speed variator drivingly connected to said feed rolls.