Unwinder arm rotating about a pivot suspended above a two-for-one twisting spindle for unwinding superposed bobbins
AssigneeSavio S.p.A.
InventorLuigi Colli
Life of this patent
Estimating the term…
Abstract
This invention is a device for unwinding and guiding yarn from a feed bobbin located in a feed box. The device has an arm which is rotated by the tension of the unwinding yarn. More specifically, this invention is a device for unwinding and guiding yarn which has first unwinder arm rotating around the bobbin rotatably connected to a pivot positioned above the spindle head, and a second unwinder arm rotatably connected to the spindle for producing twisted yarn. The first unwinder arm is supported by a frame which is connected to the box containing the two superposed bobbins so as to allow the second unwinder arm to rotate within the rotatable trajectory of the first arm.
Claims4
A two-for one spindle assembly for producing twisted yarn from at least two separate yarn sources, comprising;
- (a) a rotatable spindle having an opening in its top for receiving the separate yarns and a bottom end for emitting the twisted yarn;
- (b) a pair of superposed upper and lower feed bobbins having an orifice through which said spindle passes, wherein each of said bobbins is adapted to supply yarn to said opening in said spindle;
- (c) a pivot positioned above said spindle opening;
- (d) a first unwinder arm rotatable about said spindle and rotatably connected at one end to said pivot, and having at its other end an eyelet through which yarn from said lower bobbin passes as it is fed to said spindle opening and while said eyelet rotates about said spindle;
- and
- (e) a second unwinder arm rotatably connected at one end to said spindle and having at its other end an eyelet positioned within the rotatable trajectory of said first arm eyelet and through which yarn from said upper bobbin passes as it is fed to said spindle opening and while said second arm eyelet rotates about said spindle.
Dependencies are inferred from the claim text.