US3120732A - Belt drive for spindles of spinning or twisting machines - Google Patents

Description

1964 F. STAHLECKER ETAL' 3,120,732

BELT DRIVE FOR SPINDLES OF SPINNING OR TWISTING MACHINES Filed June 8, 1962 9 Sheets-Sheet 1 I! iilii I II 7511111111111 II II INVENTORS Fmrz STHi/LEC KER HTMRNEYS 1964 F. STAHLECKER ETAL BELT DRIVE FOR SPINDLES 0F SPINNING 0R TWISTING MACHINES Filed June 8, 1962 9 Sheets-Sheet 2 F/G. /a

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Fmrz STFI/ILECKER HHN s 5 THHLECKER BwQAQLJQA flrroRA/EYS F 1964 F. STAHLECKER ETAL BELT DRIVE FOR SPINDLES OF SPINNING OR TWISTING MACHINES Filed June 8, 1962 9 Sheets-Sheet 3 /NVENTO/PS FRITZ STHHLECKER Hfllvs STHHLECKER 8Y- Ml RTTORNEYS Feb. 11, 1964 F. STAHLECKER ETAL BELT DRIVE FOR SPINDLES OF SPINNING 0R TWISTING MACHINES Filed June 8, 1962 9 Sheets-Sheet 4 Fmrz STHIILHZKER Hnns s-rnu LECKER BY- MMQ HTTAR NEYS 1964 F. STAHLECKER ETAL' 3,

BELT DRIVE FOR SPINDLES OF SPINNING 0R TWISTING MACHINES Filed June 8, 1962 9 Sheets$heet 5 l/w twrops STr-zHLEaKm HTToRNEK 11, 1964 F. STAHLECKER ETAL 3,120,732

BELT DRIVE F OR SPINDLES 0F SPINNING 0R TWISTING MACHINES Filed June 8, 1962 9 Sheets-Sheet 6 FRITZ QTHHLECKER H nus Srm/z EOKEI? F. STAHLECKER ETAL Feb. 11, 1964 3,120,732

BELT DRIVE FOR SPINDLES 0F SPINNING 0R TWI STING MACHINES I Filed June 8, 1962 9 Sheets-Sheet 7 llvrewmes FRITZ STHHLECKER HFms STHH LEcKER B ZQQ/QVaMQ 1964 F. STAHLECKER ETAL 3,120,732

BELT DRIVE FOR SPI NDLES OF SPINNING OR TWISTING MACHINES Filed June 8, 1962 9 Sheets$heet 8 42/ as I all l/vnwraes FRITZ STHHLECKER Hrms STHHLECKER BY MAQQ' HTTORNEYS Feb. 1964 F. STAHLECKER ETAL 3,120,732

BELT DRIVE FOR SPINDLES OF SPINNING OR TWISTING MACHINES Filed June 8, 1962 9 Sheets-Sheet 9 /NVENTOIPS FRITZ STHIILEKER HnNs 8TH H LEG/(ER flTToRNEYS United States Patent 3,120,732 BELT DRIVE FUR SPINDLES OF SPINNING 0R TWISTING MACHINES Fritz Stahlecker, Botzgensteige, Bad Uherkingen, and Hans Stahlecker, I-Ialdenstrasse 20, Sussen, both of Wurttemberg, Germany Filed June 8, 1962, Ser. No. 201,083 Claims priority, application Germany June 9, 1961 15 Claims. (Cl. 57105) The present invention relates to a belt or string drive for the spindles of spinning or twisting machines of the type which the belt or string for each spindle is driven by a separate drive pulley which is mounted closely adjacent to the spindle, and in which this belt or string (hereafter collectively referred to as a belt) which consequently is :of a short length is guided by a guide pulley and a tension pulley, and wherein the tension-pulley holder is slidable on a slideway and pressed against the latter by the tension of the belt and the tension exerted by a spring, weight or similar means.

In one prior device of this kind, each tension pulley was slidably mounted on a separate slide member, while in another prior device each tension pulley and its tension means together with the guide pulley were mounted on a common support which was secured to the spindle rail by means of the housing of the spindle bearing and the mounting nut of the respective spindle. Although these prior devices have proved to be practical in the production of machines with frequently changing distances between their spindles, their production is very uneconomical if it concerns larger series of machines in which the spindles are spaced at a uniform distance from each other.

It is therefore an object of the present invention to provide a belt drive of the general type as mentioned in the beginning which may be built more economically and with greater technical advantages than the devices mentioned above and which is especially suitable for the production of a greater number of spinning or twisting machines in which the spindles are spaced at a uniform distance from each other. For attaining this object, the invention provides that the machine may be assembled of a number of equal units, each of which contains a certain number of spindles forming a group with separate drive, guide and tension pulleys, and that the slideways for the tension-pulley holders of each group are mounted on a common rail which extends in the longitudinal direction of the machine. This mounting rail may be designed so as to serve itself as a slideway for the tension-pulley holders. This is especially of advantage if the tension-pulley holders are not provided with lateral guiding means but are guided on their slideways merely by being pressed thereon, for example, by springs, weights or similar means which also serve as the belt-tension means.

The mounting rail may also be made, for example, in the form of an angle rail which may then also serve as a support on which the guide-pulley holders are mounted. The mounting rail according to the invention may furthermore be utilized for securing thereon the means for stopping the spindles, for example, belt lifting'brakes.

Another feature of the invention consists in designing the tension-pulley holders so that each of them is slidable on the mounting rail along a circular path about a pivot which is directly connected to the mounting rail. The tension springs for these pulley holders may then be connected to an angle rail or bar which is secured to the mounting rail.

For pressing the tension-pulley holders slidably upon the mounting rail, the latter is preferably provided with apertures through which the tension springs extend from one to the other side of the rail. These apertures may also be formed by dividing the mounting rail into several parallel longitudinal parts. The lower longitudinal rail part to which the tension springs are connected may then also be made adjustable relative to the other par-ts so as to permit the tension of the springs to be adjusted.

The mounting rail may be secured, for example, by being bolted to arms. or brackets which are mounted on or integral with the spindle rail or the bearing housings of the drive shaft which extends in the longitudinal direction of the machine.

A very advantageous feature of the invention further consists in designing the mounting rail so as to be pivotable, for example, about a horizontal axis which is disposed underneath the drive shaft. T he spindles are then more easily accessible and the sliding means as well as other parts which are connected to the mounting rail, for example, the guide pulleys and spindles brakes, may also be more easily serviced.

The accessibility to the spindles and other parts in the vicinity thereof may be still further improved by designing the mounting rail so as to be pivotable about an axis which is disposed above the drive shaft. If the swivel axis of sucha mounting rail is located in the proper position, it is even possible to swing the rail upwardly without displacing the belt from its driving, tension and guide pulleys. The same result may also be attained if, instead of suspending the mounting rail on fixed pivots, it is pivotable about a lever bearing.

According to another embodiment of the invention, the mounting rail may be connected to and form a part of the boxlike housing which fully or partly encloses the spindle drive.

It is one particular advantage of the invention that it permits the mounting rail for the slide and tension means of a group of tension pulleys to be combined with the associated belt guiding means to form a structural unit which may be easily installed in or, if necessary, removed from the machine. In certain cases it is even possible and advisable to extend this unit so as also to include the two drive-shaft hearings to which the mounting rail is secured, as well as a section of the drive shaft which is mounted in these bearings and carries the drive pulleys.

The objects, features, and advantages of the present invention will become more clearly apparent from the following detailed description thereof which is, to be read with reference to the accompanying drawings, in which I FIGURE 1 shows a cross section of a one-spindle belt drive with a mounting rail according to the invention and a separate slideway thereon;

FIGURE 1a is a cross-sectional view through a onespindle hand drive with a rail in accordance with the present invention, serving as a slideway for a group of tension pulley holders, whereby the means for arresting the spindle are provided on the rail and'the holders for the reversing pulleys are arranged on a further attachment rail;

FIGURE 2 shows a similar cross section of a one.- spindle belt drive, in which the mounting rail' is secured to arms which are integral with the bearing housing of the drive shaft, and in which the mounting rail itself forms the slideway for the tension-pulley holders and also carries the guideapulley holders;

FlGURE 3 shows a diagrammatic longitudinal view of a mounting rail which is secured to two shaft-bearing housings, while for the sake of clearness of this illustration the apertures in the rail as well as other parts of the apparatus are only partly indicated;

FIGURE 4 shows a front view of a part of a mounting rail which is provided with an additional longitudinal rail and with tension-pulley holders which are pivotably mounted on the mounting rail so as to be slidable thereon along a circular path;

FIGURE shows a cross section taken along line V--V of FIGURE 4;

FIGURE 6 shows a cross section of an embodiment of the invention similar to FIGURE 2, in which, however, the mounting rail consists of two parallel longitudinal parts;

FIGURE 7 shows a cross section of another modification of the invention, in which the mounting rail is pivotable about a horizontal axis which is disposed underneath the drive shaft;

FIGURE 8 shows a cross section of a further modification, in which the mounting rail is pivotable about a horizontal axis which is disposed above the drive shaft; while FIGURE 9 shows a cross section of still another modification, in which the mounting rail forms a part of the front housing of the spindle drive.

Referring to the drawings, the one-spindle belt drive as illustrated in FIGURE 1 comprises a drive shaft 1 which is mounted in antifriction bearings in bearing housings 2 which are secured to the spindle rail 3. Angular brackets 4 which are preferably made of steel plate are secured to the lower web of spindle rail 3 and support the longitudinal mounting rail 5 which is bolted to these brackets. Mounting rail 5 carries a group of slideways 6 for the individual tension pulleys 8, for example, for six to twelve spindles. Due to the resilience of the plastic of which these slideways 6 are made, they are securely clamped to but easil slidable along the mounting rail 5. The pulley holders 7 for the tension pulleys 8 are inserted into the slideways 6 so as to be slidable therein. The belt-tightening means consist of springs 9 which are connected at one end to the pulley holders 7 and at the other end to eyes 10 on the slideways 6. The guide pulleys 11 which are associated with each belt are rotatably mounted on brackets 12 which are secured to a separate rail 13 which, in turn, is secured to the bearing housings 2. The arms of each bracket 12 have an extension 12 which carries a pivot pin 14 on which a belt-lifting device is mounted, the rocking lever 15 of which is indicated in FIGURE 1 in dot-and-dash lines.

In FIGURE 1a, the arm 12" is screwed onto the rail of the slideway 5 which bears the pivot 14 about which the rocking lever 15' is pivotal by means of of the operating rod 15" for arresting the spindle movement by lifting the band off the driving disk.

In FIGURE 2, the bearing housings 22 have arms 22' integrally connected thereto, for example, by being cast in one piece. These arms 22 carry the mounting rail 25 of steel plate which is bent over at an angle at its upper and lower sides. This mounting rail 25 carries the tensionpulley holders 27 which are directly slidable thereon and are pressed upon rail 25 by springs 29 which extend through apertures 251 in rail 25 and obliquely thereto and are connected to pins 210 on the lower end of rail 25. Upon the upper web 25' of rail 25 the brackets 212 are adjustably bolted which carry the guide pulleys 213 and also the pivots 214 for the devices for stopping the spindles.

FIGURE 3 illustrates a mounting rail 35 which is bolted to the brackets 32 of the bearing housings 32, and it also shows parts of the adjacent mounting rails 35 and 35". These mounting rails are provided with elongated apertures 351 or recesses 352. Each mounting rail of this embodiment extends across twelve spindles and it is secured to the brackets 32' after each third and ninth spindle. The couplings 31' between the adjacent shaft sections 31 are also disposed within the same plane as the abutting ends of the adjacent mounting rails. This permits each mounting rail together with the belt guiding means thereon and the shaft bearings and the shaft sections with the drive pulleys thereon to be assembled so as to form a single structural unit.

In the further embodiment of the invention as illustrated in FIGURES 4 and 5, the tension-pulley holders 47 which are slidable on the mounting rail and are pressed against it by the tension springs 49 are pivotably mounted on rivets 471 with crowned shanks. Springs 49 which again extend obliquely to the surface of rail 45 on which the pulley holders 47 are slidable are hooked at one end into the projecting lugs 49 on the pulley holders and at the other end into the angle iron 410 which is secured to the mounting rail 45.

In the embodiment according to FIGURE 6, the mounting rail which consists of the upper longitudinal part 65 and the lower longitudinal part 65 is bolted to the arms '62 of the bearing housings 62. By mounting the two parts of the rail at a distance from each other, the tension spring 69 may extend obliquely between them from one to the opposite side where it is hooked into the end of the angle 610 on the lower longitudinal part 65. This lower part is provided with vertical slots through which the mounting boits are inserted. When the latter are loosened, the lower part 65 may be adjusted in the vertical direction whereby the tension of the springs may be varied.

According to FIGURE 7, the arms 72' which are integral with the bearing housing 72 are provided on their lower ends with a shaft 721 on which hinge members 722 are pivotably mounted. On these hinge members 722 the mounting rail 75 is secured so as to be slidable thereon so that rail 75 may be adjusted to different inclinations. Rail 75 carries pins 751 to which one end of springs 752 are connected which are connected at the other end to the arms 72. Arms 72 are provided with contact surfaces 723 for the mounting rail 75. When the springs 752 are unhooked and the belts are taken off, the mounting rail 75 together with the tension-pulley holders which are secured thereto may be pivoted away about shaft 721 so that the spindles will then be easily accessible. The mounting rail also carries brackets 712 which support a shaft 713 on which means for stopping the spindle are pivotably mounted.

According to the modification of the invention as shown in FIGURE 8, the bearing housings are provided with pivot pins 821 on which the arms 822 are suspended which carry the mounting rail which is adjustable thereon to different elevations and to be bolted thereto in the adjusted position. Arms 822 are secured to the rigid arms 82 on the bearing housing 82 by a screw connection which may be easily loosened so that thereafter the mounting rail 85 together with the tension-pulley supports 87 may be swiveled outwardly and upwardly on the arms 822 while the belts remain on all of their driving and guiding means. The tension springs then compensate the changes in position of the tension-pulley supports on their slideways.

In the further embodiment of the invention as illustrated in FIGURE 9, the mounting rail forms a part of the box which encloses the spindle drive, and it is screwed upon the spindle rail 93. The tension-pulleyholders 97 are pressed upon their common slideway on rail 95 by the tension of the springs 99 which extend obliquely to the plane of the slideway.

Although our invention has been illustrated and described with reference to the preferred embodiments thereof, we wish to have it understood that it is in no Way limited to the details of such embodiments, but is capable of numerous modifications within the scope of the appended claims.

Having thus fully disclosed our invention, what we claim is:

1. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a slideway for each holder, said holder being slidably mounted on said slideway, tension-producing means connected to each of said holders, said holders being slidably pressed upon said slideways by the tension of said belts and the tension exerted by said tension-producing means, and a common mounting rail extending in the longitudinal direction of the machine for supporting the slide-ways of a group of a certain number of said tension pulley holders, said common mounting rail extending approximately parallel to a plane extending through the part of the driving belt directed from the drive pulley to the tension pulley in the longitudinal direction of the machine.

2. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension-pulley holders so as to permit said tension-pulle holders to slide on said rail, and tension-producing means connected to each of said tension-pulley holders and to said rail for pressing said tension-pulley holder upon said rail.

3. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the rela tively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys and each of said guide pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension-pulley holders so as to permit said tension-pulley holders to slide on said rail, tension-producing means connected to each of said tension-pulley holders and to said rail for pressing said tension-pulley holder upon said rail, and means for securing said guide-pulley holders to said rail.

4. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension-pulley holders so as to permit said tension-pulley holders to slide on said rail, tension-producing means connected to each of said tension-pulley holders and to said rail for pressing said tension-pulley holder upon said rail, a second mounting rail separate from said first rail extending in the longitudinal direction of said machine, and means for securing a group of said guide pulleys corresponding to said group of tension pulleys by means of their holders to said second mounting rail.

5. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension-pulley holders so as to permit said tension-pulley holders to slide on said rail, tension-producing means connected to each of said tension-pulley holders and to said rail for pressing said tension-pulley holder upon said rail, and means also mounted on said rail for stopping said spindles.

6. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension pulley holders, means for pivota-bly connecting said holders so as to permit said holders to pivot slidably on said rail along a circular path, and tension-producing means connected to each of said holders and to said rail for pressing said holder upon said rail.

7. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley tor the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of saidtension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension-pulley holders so as to permit said holders toslide on said rail, said rail having apertures, and tension-producing means connected at one end to each of said holders at one side of said rail and extending obliquely to said rail through said apertures to the other side of said rail and connected at the other end to said rail at said other side thereof for pressing said holder upon said rail.

8. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension-pulley holders so as to permit said holders to slide on said rail, said rail being divided into a plurality of longitudinal parts parallel to and spaced from each other and disposed above each other, tension-producing means connected at one end to each of said holders and at the other end to the lower longitudinal part of said rail, and means for adjusting said lower part relative to the upper parts of said rail for varying the strength of said tension-producing means.

9. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said tension-pulley holders so as to permit said holders to slide on said rail, said rail being divided into a plurality of longitudinal parts parallel to and spaced from each other and disposed above each other, tension-producing means connected at one end to each of said holders at one side of said rail and extending obliquely to said rail through the space between the upper and lower parts of said rail and connected at the other end to the lower longitudinal part of said rail, and means for adjusting said lower part relative to the upper parts of said rail for varying the strength of said tension-producing means.

10. In a belt drive for the spindles of a spinning or twisting machine having a drive shaft extending in the longitudinal direction of the machine, a separate drive pulrley for the relatively short belt of each spindle mounted on said drive shaft and closely adjacent to said spindle, bearings for rotatably mounting said shafts, a housing for supporting each of said bearings, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinai direction of the machine and secured to said bearing housings and forming slideways for a group of a certain number of said holders so as to permit said holders to slide on said rail, and tension-producing means connected to each of said holders and to said rail for pressing said holder upon said rail.

11. In a belt di'ive for the spindles of a spinning or twisting machine having a drive shaft extending in the longitudinal direction of the machine, a separate drive pulley for the relatively short belt of each spindle mounted on said drive shaft and closely adjacent to said spindle, bearings for rotatably mounting said shafts, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways 'for a group of a certain number of said holders so as to permit said holders to slide on said rail, tension-producing means connected to each of said holders and to said rail for pressing said holder upon said rail, and means for mounting said rail so as to be pivotable about a substantially horizontal axis disposed underneath said drive shaft.

12. In a belt drive for the spindles of a spinning or twisting machine having a drive shaft extending in the longitudinal direction of the machine, a separate drive pulley for the relatively short belt of each spindle mounted on said drive shaft and closely adjacent to said spindle, bearings for rotatably mounting said shafts, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said holders so as to permit said holders to slide on said rail, tension-producing means connected to each of said holders and to said rail for pressing said holder upon said rail, and means for mounting said rail so as to be pivotable about a substantially horizontal axis disposed above said drive shaft, said last means being disposed in a position so that, when said rail is pivoted upwardly, said belts will not be substantially displaced from said drive, tension and guide pulleys.

13. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a slideway for each holder, said holder being slidably mounted on said slideway, tensionproducing means connected to each of said holders, said holders being slidably pressed upon said slideways by the tension of said belts and the tension exerted by said tension-producing means, a common mounting rail extending in the longitudinal direction of the machine for supporting the slideways of a group of a certain number of said tension-pulley holders, and means for connecting said mounting rail for said group of slideways and said tension-pulley holders and tension producing means associated with said group to each other so as to form one structural unit adapted to be installed in and removed from the machine as a unit.

14. In a belt drive for the spindles of a spinning or twisting machine having a drive shaft extending in the a: longitudinal direction of the machine and divided into a plurality of shaft sections, coupling means for connecting the adjacent shaft sections to each other, a group of spindles associated with each shaft section, a group of drive pulleys corresponding to the number of spindles of each group mounted on each shaft section, each of said drive pulleys located closely adjacent to its associated spindle, at least one guide pulley and a tension pulley associated with each drive pulley, a relatively short belt connecting said pulleys for each spindle, each of said tension pulleys and guide pulleys having a holder, a plurality of mounting rails extending in the longitudinal direction of the machine adjacent to each other, each of said rails having a length substantially corresponding to the length of one of said shaft sections and forming slideways for said tension-pulley holders of each group so as to permit said tension-pulley holders to slide on said rail, tension-producing means connected to each of said tension-pulley holders and to said rail for pressing said tension-pulley holder upon said rail, means for connecting said guide-pulley holders of each group to said rail, bearing means for one shaft section connected to said rail, and means for connecting said rail and said pulley holders, tension-producing means, bearing means and shaft section of each group to each other so as to form one structural unit adapted to be installed in and removed from the machine as a unit.

15. In a belt drive for the spindles of a spinning or twisting machine having a separate drive pulley for the relatively short belt of each spindle mounted closely adjacent to said spindle, at least one guide pulley and a tension pulley for each of said belts, each of said tension pulleys having a holder, a mounting rail extending in the longitudinal direction of the machine and forming slideways for a group of a certain number of said pulley holders so as to permit said group of tension pulley holders to slide on said rail, tension-producing means connected to each of said holders, said holders being slidably pressed upon said slideways by the tension of said belts and the tension exerted by said tension-producing means, and a boxlike housing at least partly enclosing said group of holders and the drive guide and tension pulleys and tension-producing means associated with said group, said mounting rail forming a part of said housing,

References Cited in the file of this patent UNITED STATES PATENTS 2,869,317 Schurr et al. Jan. 20, 1959 2,953,894 Stahlecker et a1. Sept. 27, 1960

Claims (1)

1. IN A BELT DRIVE FOR THE SPINDLES OF A SPINNING OR TWISTING MACHINE HAVING A SEPARATE DRIVE PULLEY FOR THE RELATIVELY SHORT BELT OF EACH SPINDLE MOUNTED CLOSELY ADJACENT TO SAID SPINDLE, AT LEAST ONE GUIDE PULLEY AND A TENSION PULLEY FOR EACH OF SAID BELTS, EACH OF SAID TENSION PULLEYS HAVING A HOLDER, A SLIDEWAY FOR EACH HOLDER, SAID HOLDER BEING SLIDABLY MOUNTED ON SAID SIDEWAY, TENSION-PRODUCING MEANS CONNECTED TO EACH OF SAID HOLDERS, SAID HOLDERS BEING SLIDABLY PRESSED UPON SAID SLIDEWAYS BY THE TENSION OF SAID BELTS AND THE TENSION EXERTED BY SAID TENSION-PRODUCING MEANS, AND A COMMON MOUNTING RAIL EXTENDING IN THE LONGITUDINAL DIRECTION OF THE MACHINE FOR SUPPORTING THE SLIDEWAYS OF A GROUP OF A CERTAIN NUMBER OF SAID TENSION PULLEY HOLDERS, SAID COMMON MOUNTING RAIL EXTENDING APPROXIMATELY PARALLEL TO A PLANE EXTENDING THROUGH THE PART OF THE DRIVING BELT DIRECTED FROM THE DRIVE PULLEY

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