US2472226A

US2472226A - Driving arrangement for spindles of spinning and doubling frames

Info

Publication number: US2472226A
Application number: US764652A
Authority: US
Inventors: Naegeli Werner
Original assignee: Joh Jacob Rieter und Cie AG
Current assignee: Joh Jacob Rieter und Cie AG
Priority date: 1939-02-07
Filing date: 1947-07-30
Publication date: 1949-06-07
Anticipated expiration: 1966-06-07
Also published as: BE475179A; FR863290A; CH212624A; GB534365A

Description

June 7, 1949. w NAEGELl DRIVING ARRANGEMENT FOR SPINDL'ES OF SPINNING AND DOUBLING FRAMES Filed July 30, 1947 Patented June 7, 1949 DRIVING ARRANGEMENT FOR SPINDLES OF SPINNING AND DOUBLING FRAMES Werner Naegeli, Winterthur, Switzerland, as-

signor to Actiengesellschaft Joh. Jacob Rieter & (lie, Winterthur, Switzerland Application July 30, 1947, Serial No. 764,652 In Germany February 7, 1939 2 Claims.

The invention relates to a driving arrangement for spindles particularly adapted for ring spinning and ring doubling frames.

Known driving arrangements of this type are generally provided with a sheet metal driving roller or drum extending through the whole frame. The driving means (e. g. gut bands, or the like) are slung around the roller and pass tension devices, whereupon they are led to the spindles or groups of spindles to be driven. These spindles are arranged on one side or on both sides of the frame. In order to obtain a good running of the spindles it is necessary that the driving means leaving the roller and running on to the spindles be tensioned in a horizontal plane passing through the middle of the wharves of the spindles.

The known driving arrangements do not completely meet this requirement. In these arrangements the sheet metal roller is always mounted somewhat below the aforementioned plane to prevent the driving means passing from the wharves on one side of the machine to those on the other side from rubbing against the roller. This difference in mounting must be larger if broad band shaped driving means are used along their path from one side of the frame to the other are running edge on corresponding to the vertically arranged driving surfaces of the wharves. The lower mounting of the driving roller causes the driving means to run obliquely onto the wharves. This is disadvantageous as the band brushes against the rims of the wharves, thus causing increased wear. Further the fact that the bands run on to different diameters of the wharve causes a braking action which disturbs the uniform running of the spindles.

It has already been proposed to obtain a horizontal running of the driving means on to the wharves by interposing guide rollers, but because these are additional structures which consume power, render the working difficult and increase the costs of the frame. Further an arrangement has been propsed in which instead of the driving roller driving disks are used, between which passes the band running from one side of the frame to the other. This arrangement is also disadvantageous as disks in contra-distinction to rollers have heavier moving masses, whereby the danger of causing vibrations is increased. Furthermore the provision of disks causes a draught of air which not only results in losses of power but impairs the spinning process and enhances the formation of fly. Disks are particularly unfavorable when the direction of the rotation of the spindles has to be reversed, as in this case the tension device has to be displaced. This again requires correspondingly broad and heavy disks.

These disadvantages are overcome according to the present invention by providing the sheet metal roller with circumferential grooves in which the driving means on passing in a tensioned state from the spindles on one side of the frame to the spindles on the other side is located. The driving roller may in this case be mounted at such a height that its upper part is situated in the plane passing through the middle of the wharves. The driving means, for instance the band, running off the roller as well as running on to this roller passes in a perfectly horizontal plane to the wharves, hence it does not brush the brim of the wharve no is it displaced on the latter. The wear of the driving means is thereby reduced and the drive of the spindles is quite uniform. On the other hand the driving means does not contact the driving roller during its passage from one side of the frame to the other and the roller can be made of thin sheet metal having small moving masses. Unfavorable draughts of air do not occur, have the use of additional structures such as guide rollers and the like are avoided. On reversing the direction of rotation of the spindles the band can be shifted on the roller, as the band passing from one side of the frame to the other does not alter its position in this case.

The arrangement according to the invention is particularly favorable when the tension device is located below the driving roller as in this case the part of the driving means running on to the roller and that running off the latter run always in a horizontal plane on to the spindles and a ready reversal of the direction of rotation of the spindles is obtained by a displacement of the tension device. The roller affords thereby always the necessary bearing surface for the driving means.

The grooves present the further advantage that the roller made of sheet metal is stiffened and much more resistant against vibrations.

A constructional example of the invention is illustrated on the accompanying drawing, in which Fig. 1 shows diagrammatically and in vertical section a driving device according to the invention, and

Fig. 2 is a plan view of Fig. 1.

The driving means I which is shown in the drawing to be a band, passes round the wharves 2 of the spindles and around the driving roller or drum 3. The latter is provided at several places with grooves 4 in which the driving means i is located without getting into contact with the roller 3 when passing from the wharves Z on one side of the machine to those on the other side. The roller 3 is so mounted that its uppermost portion is situated in a plane passing through the middle of the width of the wharves of the spindles 5. The driving means I run, after having been turned through an angle of 90, in a perfectly straight manner on to the wharves. As the face of the latter is slightly convex the band runs exactly in the middle of that face and does not rub against the rim.6. A tension device consisting of a roller 1 is arranged below the roller 3 and is mounted on a lever 8 loaded by the tension weight 9. In order to reverse the direction of rotation of the spindles the direction of rotation of the roller 3 is reversed and moreover all the tension devices are moved from the position I (Fig. 2) into position II by displacing all the levers 8, but the bands do not need to be reversed. The portion of the band passing from the wharves on one side to those on the other side remains always in the groove 4 of the sheet metal roller.

1. A driving device for spindles of spinning and doubling frames, comprising a thin sheet metal driving roller extending through the frame and provided with circumferential grooves, spindles on both sides of the frame, and driving means for said spindles, the parts of said means passing from the spindles on one side to those on the other side being situated in said grooves.

2. A driving device for spindles of spinning and doubling frames, comprising a thin sheet metal driving roller extending through the frame and provided with circumferential grooves spindles on both sides of the frame, bands for driving said spindles, the parts of said bands passing from the spindles on one side to those on the other side being situated in said grooves, and tension means for said bands arranged below said driving roller.

WERNER NAEGELI.

REFERENCES CITED The following references are of record in the file of this patent:

FOREIGN PATENTS Number Country Date 174,992 Switzerland May 1, 1935 217,738 Switzerland Feb. 16, 1942 505,004 Great Britain May 3, 1939