Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1983-06-09
1985-07-09
Gilreath, Stanley N.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 564, 83919, 83614, B65H 3502, B26D 520
Patent
active
045277508
DESCRIPTION:
BRIEF SUMMARY
THE BACKGROUND OF THE INVENTION
In conventional paper making machines paper is produced in the form of a continuous web, which--after having passed the driver section and any platers of the machine--is wound up onto the so called jumbo reel. This consists of a heavy steel cylinder which is capable of carrying wound paper webs having a length of ten thoudsands of meters and a width of about 3 to 10 meters. When the winding of the web onto the jumbo reel has been finished it is necessary to select therefrom a number of test samples in order to make it possible to lay down the quality as well as other properties of the paper produced. Simple tests may be made by the machine operator himself, while more complicated tests have to be accomplished in a laboratory. Irrespective of the testing technique used the selection of the necessary test samples from the wound and roll-shaped paper web, which rests motionless on the jumbo reel, has hitherto been carried out quite simply by letting two operators manually tear off or by means of a knife cut off a strip along the entire machine width (i.e. along the entire length of the wound paper roll). The strip thus torn or cut off may then either be divided into smaller pieces or in its entirety be brought into the test equipment in question. To tear or cut off a strip in the manner described is, however, connected with many disadvantages. Firstly it is a troublesome and ergonomically unfavourable work for the operators to try to extract an expedient strip, which often is very long, from a material which is flabby and cumbersome. In pratice the result usually will be that the extracted strip is more or less sharply battered; what makes the strip unsuitable for certain tests. Further the strip seldom becomes straight, but rather wry or wave-like with irregular borders. When handled in sophisticated test equipment such strips will cause problems. Finally it should be stressed that the necessity of having two operators to carry out the test sample extraction may involve extra costs.
BRIEF DISCLOSURE OF THE INVENTION
The present invention aims at facilitating the extraction of strips from paper or similar webs and making it possible to obtain undamaged and exactly straight strips which are easy to handle. This is achieved by an apparatus comprising a carrier having at least two mutually spaced-apart cutting members for cutting out at least one strip therebetween. This apparatus is characterized in that the carrier is movable along a substantially immobile web and comprises a core which is rotatable about its own axis, a web strip cut out by the cutting members being windable onto said core with a periphery speed which is substantially equal to the speed of motion of the carrier in relation to the web so as to always keep each strip neatly stretched during the winding thereof onto the core.
FURTHER ELUCIDATION OF THE PRIOR ART
By the DE patent specification No. 1067616 and the Swedish patent application No. 16832/67 (publication No. 346618) it is previously known to cut out test strips from paper webs by means of apparatuses comprising two spaced-apart cutting members mounted on a carrier. In these cases, however, the apparatus is stationary and arranged to cut out a single strip from the running paper web in a paper making machine and none of the apparatuses presents any means whatsoever for winding up the strips in such a manner that the strips do not risk to be mechanically damaged. As a matter of fact the apparatuses of the above-mentioned publications are moisture test auxiliary devices.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view illustrating the apparatus according to the invention when cutting out a test strip from a paper roll,
FIG. 2 is a perspective view of the apparatus looked at obliquely from above, portions of the apparatus having been cut away for the purpose of clarification,
FIG. 3 is a perspective view of the apparatus looked at obliquely from below,
FIG. 4 is an enlarged lateral view showing a cutting member included in the appara
REFERENCES:
patent: 2519159 (1950-08-01), Talbot
patent: 2837155 (1958-06-01), Cundiff et al.
patent: 3668922 (1972-06-01), Fleming et al.
patent: 4022095 (1977-05-01), Jones
Gilreath Stanley N.
Peters Leo J.
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