Contractable winding mandrel

Details Contractable winding mandrel Contractable winding mandrel

1977-09-06

1978-11-07

Mautz, George F.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

2421101, B65H 5464, B65H 7524

Patent

active

041241711

ABSTRACT:
A contractable winding mandrel for forming yarn balls or the like and comprising a fit-on piece mounted upon a shaft, first arms articulated thereon, struts rotatably connected to the said arms and arranged generally parallel to the shaft, and second arms which are pivotably connected to the struts at their one ends and having their other ends pivotably mounted in a head piece which is slidable parallel and coaxially to the shaft, so that when the spacing between the fit-on piece and the head piece is increased or reduced the radial spacing of the struts can be reduced or increased respectively, wherein the outside surfaces of the fit-on piece and of at least the second arms are made rough and/or uneven to prevent slipping of yarn upon the mandrel when the spacing between the fit-on piece and the head piece is increased.

REFERENCES:
patent: 1220974 (1917-03-01), Gebhart
patent: 1246130 (1917-11-01), Macready
patent: 2535188 (1950-12-01), Beckner
patent: 2636695 (1953-04-01), Bixby
patent: 3421712 (1969-01-01), Scroggie et al.
patent: 3825196 (1974-07-01), Yamazaki

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