Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1979-11-09
1982-11-09
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
B65H 5402, B65H 5434
Patent
active
043580653
DESCRIPTION:
BRIEF SUMMARY
Devices for producing thread or yarn reserve windings are commonly known in practical use, which are either relatively simple but depend on the thread tension, or which are relatively complex due to the elements to be controlled if they are independent of the thread tension.
In the German DOS No. 2,347,644 e.g. a device depending on the thread tension is described, in which the thread to be placed onto the bobbin tube is guided by a mobile suction gun to a thread stop, which is held back magnetically, and subsequently is guided into a thread catching zone at the face side of the tube for taking up the thread on the bobbin tube. After the thread is taken over by the rotating tube, a force increasingly acting onto the aforementioned thread stop is generated, which force pivots the stop out of the magnetic field. In this process the thread after initially forming thread reserve layers moves towards the center of the bobbin tube, i.e. into the zone of thread traversing motion.
Devices depending on the thread tension of such type show the disadvantage that the number of windings, or the distance between windings respectively, vary according to the thread tension which is adapted to the winding speed and to the thread material processed.
A device, which functions independently of the thread tension, but is relatively complicated, is described in German DAS No. 1,806,243. In this device, the thread reserve windings are formed by a lever arrangement activated stepwise by the traversing motion device.
It thus is the object of the present invention to create an apparatus, which functions independently of thread tension, and using which the thread in most simple operation and with simplest design can be transferred onto the rotating bobbin tube for producing thread reserve windings.
During use, the pivotally mounted lever is movable between a rest position and a set back position. When the lever is in the rest position, the thread guide is able to guide a thread into the thread catching zone of the bobbin 2. When moved from the rest position towards the set back position, the carrier element carries the pivotally mounted thread stop along with the lever. Upon release of the lever, the force means pivots the lever towards the rest position while the force means for the thread stop pivots the thread stop in the same direction. However, the damping element dampens the pivoting of the thread stop in this direction.
The thread guide is positioned to receive the thread thereon during pivoting of the lever towards the rest position and thereafter guides the thread towards the longitudinal center of the bobbin tube after catching of the thread in the catching zone of the bobbin tube.
Briefly, the invention provides an apparatus for producing thread reserve windings on a bobbin tube placed on a rotating bobbin chuck. This apparatus comprises a pivotally mounted lever having a thread guide for guiding a thread into a thread catching zone of the bobbin tube and a pivotally mounted thread stop offset from the thread guide towards a longitudinal center of the bobbin tube. In addition, a carrier element is provided for carrying the thread stop with the lever during pivoting of the lever. Separate force means are also provided for pivoting lever and the thread stop in the same direction while a damping element is provided for dampening the pivoting of the thread stop in this latter direction. Still further, a thread guide curve is positioned in a plane parallel to the bobbin tube and is downwardly curved in a direction towards the longitudinal center of the bobbin tube for guiding a thread thereon.
In one embodiment, the thread stop is mounted on a second lever which is supported concentrically with the first lever. In this case, the carrier member is mounted on the first lever and is disposed under the second lever so as to carry the second lever with the first lever.
In another embodiment, the thread stop is mounted on a sleeve which is supported coaxially with the lever. In this embodiment, the carrier member is in the form of a
REFERENCES:
patent: 2481031 (1949-09-01), McDermott
patent: 3488010 (1970-01-01), Parry
patent: 3741488 (1973-06-01), Wuest
patent: 3792818 (1974-02-01), Bauer et al.
patent: 3955768 (1976-05-01), Fluck
patent: 3964690 (1976-06-01), Tauleigne
patent: 3971518 (1976-07-01), Newman et al.
patent: 3999716 (1976-12-01), Spaller, Jr.
patent: 4049209 (1977-09-01), Bach et al.
patent: 4057196 (1977-11-01), Amos
patent: 4105165 (1978-08-01), Miyazaki et al.
patent: 4195788 (1980-04-01), Miyazaki et al.
Schwander Andreas
Thalmann Dieter
Gilreath Stanley N.
Rieter Machine Works Ltd.
LandOfFree
Apparatus for producing thread or yarn reserve windings on a bob does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for producing thread or yarn reserve windings on a bob, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for producing thread or yarn reserve windings on a bob will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-743035