Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1985-03-12
1986-05-27
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 4702, 242 4705, B65H 5124
Patent
active
045911070
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Field of the Invention
This invention relates to a yarn storage and feeding device of the type comprising a drum-shaped storage body the circumference of which constitutes a storage surface for a yarn supply and which is provided with at least one interior hollow space to which at least one opening opens from the exterior.
2. Background of the Invention
Known from EPA No. 00 49 896 is a device of this type, wherein the storage body is formed as a double-walled cup-shaped moulding having its lengthwise end covered by an annular disk. This design prevents the intrusion of contaminants into the interior of the storage body, but manufacture of the moulding is rather complicated and expensive. Moreover, this principle cannot be applied in the case of yarn storage and feeding devices the storage body of which consists of a plurality of movably interengaging members, as in this case proper functioning of the device requires the presence of passages of or openings which permit dust and other contaminants to enter the storage body interior. This has up to now been accepted as unavoidable. In operation, however, this results in the permanent danger of failure. This danger can only be diminished by providing relatively short maintenance or cleaning intervals. This is because dust and other contaminants may enter delicate bearing assemblies or may interfere with the proper operation of feeler elements. Accumulations of such contaminants may even come to collision with the yarn supply.
It is an object of the invention to provide a yarn storage and feeding device of the type set forth above, including simple and inexpensive means which may even be installed in already existent equipment for preventing dust and other contaminants from entering the storage body and accumulating therein.
This object is attained according to the invention by inserting a filler body into the hollow interior of the storage body for closing off the openings.
The filler body fills those portions of the storage body's hollow space that are susceptible to the accumulation of dust and other contaminants. Dust and contaminants are prevented right from the start from entering the hollow space in the storage body. Dust and contaminants are of course also present, they are continuously and automatically removed, without being able to cause malfunctions. The filler body may be manufactured to any suitable shape by economical means and methods for installation in the hollow space of the storage body, with the particular advantage that the storage body of an already existent yarn storage and feeding device may be equipped with a filler body at any subsequent time. The filler body offers the particular advantage that it permits the employ of the constructional features of conventional storage bodies which disregard the contamination dangers, but which may rather be designed, as is frequently the case, as a rod- or rib cage the configuration-in-space of which has been found particularly suitable for temporarily storing yarns of widely varying properties. The filler body may also be employed for storage bodies formed of movably interengaged parts which during operation of the device continuously move relative to each other, as the filler body does not hinder these relative movements, while easily following these movements. A storage body of this type usually consists of two cup-shaped rod cages having their open ends engaged within one another, the outer surface portions of the rods of one of said cages forming a carrying surface for the yarn supply, while the outer surface portions of the rods of the other cage impart a feed movement to the yarn supply or yarn windings due to a certain tumbling or circulating movement of this cage. In addition, the storage body often has to be kept standing still relative to a moving yarn feeder element, which is accomplished by retaining one of the two rod cages, so that the other cage is also prevented from rotating due to the interengagement of the rods of the two cages. This construction necessitates th
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patent: 3796386 (1974-03-01), Tannert
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Aktiebolaget IRO
Gilreath Stanley N.
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