Thread catching structure
AssigneeRieter Machine Works, Ltd.
InventorHeinz Oswald
Life of this patent
Estimating the term…
Abstract
The thread catching structure is mounted on a chuck and includes a winding-on surface from which a thread winding may extend into a shaped recess under an overlying projection. The thread catching structure also has a clamping element which presses outwardly under centrifugal force against an underside of the projection to clamp the thread therebetween. Upon a subsequent severing of the thread, the resulting thread tail extending to the break location remains firmly clamped.
Claims20
A thread catching ring structure for use on a chuck of a filament winding machine, said ring structure comprising at least one axially directed projection having an underside facing radially inwardly and a thread guiding edge, a guide surface for guiding a thread radially inwardly under the projection and a clamping element for clamping the thread against the underside of the projection, said element comprising a first portion securing the element to the structure and a second portion connected to the first and extending away therefrom, the second portion being pivotable relative to the first portion under the influence of centrifugal force acting thereon in use to cause a surface portion to press against the underside of the projection.
A thread catching structure comprising
- a ring member for mounting on a chuck and having an annular recess in an outer surface;
- a first member mounted on said ring member and having at least one axially directed projection disposed over said recess, said projection having an underside and a thread guiding edge for guiding a thread to said underside;
- and
- a clamping element having a first portion clamped between said ring member and said first member and a second portion integral with said first portion and extending over said recess between said projection and said recess, said second portion being of a material and thickness to bend outwardly under centrifugal force against said underside of said projection to define a controlled thread clamping zone therebetween.
In a thread catching structure, the combination comprising
- an annular member having at least one axially directed projection, said projection having an underside and a thread guiding edge for guiding a thread to said underside;
- and
- a clamping element having a first portion fixed within said annular member and a second portion integral with said first portion, said second portion being disposed opposite and in spaced relation to said underside of said projection, said second portion being of a material and thickness to bend outwardly under centrifugal force against said underside of said projection to define a controlled thread clamping zone.
Dependencies are inferred from the claim text.