False twist drafting device for continuous working of slubbings of textile materials
OwnerIda Petracchi, Antonietta Assirelli +2inventors
InventorsIda Petracchi, Antonietta Assirelli, Carlo Pacini, Cesare Pacini
Life of this patent
Estimating the term…
Abstract
Two offset and opposite rotating members have annular shoulders which are surrounded by frontal surfaces that are being at right angles to the axis of rotation of the members and partially opposed to each other. A first one of the members is mounted on a rotation drive shaft, and is made up of two faced disks, while the other one rests with its own shoulders on the shoulders of the first member and rests also on another point for mutual positioning of the members. Material to be processed may be easily inserted sideways between the two opposite members.
Claims10
A false twist drafting device for slubbings of textile material, comprising:
- a frame support;
- a first shaft rotatably mounted to said frame support;
- at least two spaced apart first rotating members each having a first radially extending frontal surface and mounted for rotating with with said first shaft;
- at least two second shafts rotatably mounted to said frame support, being parallel to said shaft and axially offset from said first shaft, each of said second shafts having a free end;
- a second rotatable member having a second radially extending frontal surface and mounted for rotation with each of said second shafts at each free end to expose at least a portion of each second frontal surface and so that each second member overhangs each free end;
- said first and second frontal surfaces of one of said first and second members and said first and second frontal surfaces of the other of said first and second members facing and partly overlapping each other at a contact area for receiving textile to be drafted therebetween, each of said first and second frontal surfaces having a conical annular shoulder, with said conical annular shoulders of said overlapping first and second frontal surfaces approaching each other near a center of said contact area and extending tangentially to each other at said center of said contact area, each of said frontal surfaces having a toothed crown area surrounding and extending outwardly of each conical annular shoulder respectively for drafting textile in said contact area;
- transmission means for transmitting rotation of one of said first and second shafts to the other of said first and second shafts so that said first shaft rotates in a direction opposite to said second shafts;
- and
- biasing means for axially moving one of said first and second members with respect to the other of said first and second members to bias said first and second frontal surfaces together in said contact area.
Dependencies are inferred from the claim text.