US1770085A - Twister tube for spinning frames - Google Patents

Description

' July 8, 1930. H A OWEN 1,770,085

TWISTER TUBE FOR SPINNING FRAMES Eiled Jan. 8, 1930 2 Sheets-Sheet 1 Fig 1.

4 Pp-:1; 28 30 H5 3| a5 9 fi as if 27 u ase' n '2: e if'fi 5' 5 InvenTor. I Henry A. Gwen AT Tys.

H. A. OWEN Jul 8, 1930.

TWISTER TUBE FOR SPINNING FRAMES 2 Sheets-Sheet 2 Filed Jan. 8, 1

, InvenTor. Henry A. Gwen.

b fwwkw ATTys.

Patented July 8, 1930 UNE'BTED stares earner orrics HENRY A. ownlv, or FOXBORO, MASSACHUSETTS, Assienoa TO DAVIS & FURBER MA- CHINE COMPANY, or NORTH Annovna, Massaonusnrrs, A CORPORATION OF MAs- SACI-IUSETTS TWISTER- TUBE FOR SPINNING FRAMES Application filed January 8, 1930. Serial No. 419,428.

This invention relates to spinning frames of the type in which a false twist is lnduced in the roving during the drawing operation, and particularly to improvements in the means employed to induce such twist, and has for its general object to provide a twister tube constructed in a manner to increase its operating etficiency- Y A specific object of the invention is to provide a twister-tube which rotates in completely closed cylindrical bearings.

A further specific object of theinvention is to provide a tube which can be readily re moved or replaced Without disturbing or stretching the driving belt thereon.

Afurther object of the invention is to provide a twister tube having a totally enclosed lubricating system incorporating an eflicient method of feeding lubricant directly to the journals on the tube. 7 A further object of the invention is to provide a safety device which limits the downward movement of the tube when making adjustments thereon.

These and-other objects and features will more fully appear from the following specification in connection with the accompanying drawings, and will be particularly pointed out in the claims.

In the drawings: v

Fig. 1 is a cross sectional'view through a portion of a spinning frame embodyinga preferred form of the invention.

Fig. 2 is a plan view of a portion of the i spinning frame illustrating the manner in which the twister tube is supported thereon.

Fig. 3 is a cross section on line 33 Fig. 1.

Fig. 4 is a sectional view on line M Fig. 3.

It is a well known fact that the spinning frame of the usual type fails to produce ahigh quality even run of yarn when spinning certain materials such, for instance, as woolen yarns. The introduction of a false twist into the roving while it is being drawn has been found greatly to increase the quality of the yarn. In order to maintain a uniform high quality in the product, the means used to produce the false twist must function uniformly. It is the purpose of the present invention to produce a twister tube which will function uniformly and with a minimum,

of attention.

To illustrate the construction and function of the tube, a portion only of a spinning frame including the elements associated with the twister tube is illustrated. The adaptation of the improvements included in the present invention to the elements not shown will be readily understood by those skilled in the art. A pairof feed rolls 1 and 2 de-, liver the roving 3 from a suitable source of supply, not shown, to the twister tube through which it is threaded and delivered therefrom to the bite of the draft rolls'5 and 6. The speed of the roll 5 with relation to the,

feed rolls 1 and 2 isvaried to produce the required draft in the roving. Upon passing between the draft rolls the roving is given its final twist by means of a ring spinning mechanism,-not shown. The roll 6 is held in yielding engagement with the roll 5 by means of the stirrup 7 actuated by the weight 8.

The twister tube itself must be provided with suitable means for engaging the roving and imparting a false twist thereto. Any

suitable means for this purpose may be employed. The means illustrated and described herein is shown as of the type illustrated in the U. S. patentto' Pease No. 983,641.

The general construction. of the tube in;

volves certain novel features. The complete tube assembly designated by4 is supported in a specially constructed bracket 9 secured to a rail 90 mounted in the main frame, 10. The

tube 4; consists of a tubular body member'll,

rotatably mounted in the bracket 9 and having an axial bore 12 therein. A whorl 13 is detachably secured to the bore member 11 in any suitable manner as by means of the set screw 14. The upper end of the member 11 is provided with pins 15 which intermittently engage the roving as it passes into the tube and assists in the uniform drawing thereof. A Thelower end of the twister tube is provided with a detachable roving engaging and twisting head 16 secured thereto in any suitable manner as by means of a set screw 17. The set screw is preferably pointed at its inner endto be received by a properly positioned spot or recess on the end of the tube.

. ever, be employed to positively retain the head on the tube such for example as aremovable, straight or taper pin in which casethe tube must be a-ppropriately re'cessed to retain the pin.- A desirable feature of such construction is that if the set- -sc-rewor pin M shouldbecome loosened during the running of the machine the head '16will not imme-. diately drop down but will be temporarily supported by the securing means thus ,provide an opportunity for detecting the loose Condition of such retaining means which condition may 'be reme'diedbefore any damage occurs. I 1 The head 16 isprovidedwitha pair of jaws 18' and l 9 which have clamping faces disposed 1 maxinalignment with the bore 12 of the tube and between whichthe roving passes to rei tively greatamount of wear takes place at bite ofthedraft rollsb and G. 'One or both of the jaws l8 and19 are preferably yielding with relation to theotherl As herein shown the jaw 18 *is pivoted totheihea d at 20, and has an upper weightedarm; 21. Since'a relathe clamping faces the j aws'are desirably detachably'se'c'ured to the head to provide for replacement. 'Ihe jaw ls is securedto the head by meansof a screw 22. 'fThejaw 19' is secured to its upper weighted arm section 21 by means ofa screw 28. Asthe tuberotates the weighted" is thrown outwardly by centrifugal force which rocks the jaw 19 aboutits pivot point 20' to grip the roving as i it emerges from the tubular member 4.

If desireda guiding tube 2'4:may be secured .to the head l6'in a'Xial alignment with the borel2 to directthe roving into the plane of the clamping faces of the jaws. As a result of theiconstructio'n above described, the-rotatin'g parts of the twistertube assemblymay be readily removedwithoutidisturbmg anyof the associated parts of the mechanism. Byl'oosening the set screw 17 the head -16. may be removed from'the end of the V tubular member 4, The tubular member itself may now'be removed byloosening the set screw 14 in the whorl and lifting endavise out of the bracket. It-will be noted that the abovefeature is accomplished without moving the whorl laterallyfrom its running position thus avoiding stretching or dis? turbing'the driving belt 25. U H

is common practice to mount'a'twi'ste tube in bearings which are partially open usually at the-front to permit'the' tube to be removed laterally forward. This method was necessitated chiefly because of the struccient and render proper lubrication thereof -ve ry difficult. tube is supported in completely closed cylin- * drical bearings 26 and 27 above and below the whorl 13 respectively;- Each of these bear- In' the present inyention the ings is provided with oil reservoirs 28 completely surrounding the tube and preferably situated in a plane'intermediate of the plane of the'upperand lower faces of the bearings. Preferably the reservoirs are provlded with oil feedingwicks 29 which engage the periph- ."Ea'jch reservoir is also providedwith a filling OrificeSO situated a readily accessibleposition in front'of the twistertubes.

v j There is thus provided eflicient bearings'havceive its temporary twist before entering the the;v bite of the rolls 5'and Smust be accurately adjusted. Inthepresent construction this is accomplishe'd'by loosening the set screw 14 in the whorl 1-3 and moving the tubularmember axially until the proper adjustment is secured after which the set screw istightened. The weight ofthe tubular member with its clamping head is thus supported by the whorl, theflower face ofwhich'engages the upper Y'face of'the bearing 27.

In order to prevent accidental engagement of the clamping jaws with'the draft rolls.

means are provided to limit the extent to which the tube may descend in its bearings.

If the set screw 14c should become loosened while the machine is running or if the operator is careless in adjusting the. tube a stop shoulder 31 on'the tubular member is provided and sopositionedthat it will stop the downward motion of the tube just before the jaws l8 and19 engage with the rolls 5 and 6. Damage to themachine is thereby positively preventedp The upper bearing'QS is slightly countersunk on its upper face to form a sunkenbearingface upon which the stop shoulder 81 may rest. hen the proper height of' the. jaws above the rolls 5 and G-has been determined, there may be .a slight space between the shoulder and its co-operat'ing bearing 'face on the bearing 26. If such a space 'exists abovef the surface of the-bearing there would be a tendency for foreign matter such as fibres and lint to accumulate therein. Furthermore should theroving become accidentally wound in the space'the elements of the tube would have to bedisassembled and cleared to again establish a free running tube. By locating the bearing surface for the shoulder 31 below the face of the bearing the difiiculties which arise due to the presence, adj a cent the roving, of a shoulder bearing upon or near a co-operating bearing face are elimi- 'nated.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is: a

1. A spinning frame comprising drawing rolls, a closed cylindrical bearing, a twister tube having a tubular body member through which the roving is threaded rotatably mounted in and axially removable upward from said bearing, a whorl detachably secured to said body member, a frame detachably secured to the lower end of said body member to permit the axial upward removal of said member and means on said frame to engage the roving as it emerges from the bottom of said body member and impart a fake twist thereto adjacent the bite of the r0 s.

2. A spinning frame comprising drawing rolls, a closed cylindrical bearing, a twister tube having a tubular member through which the roving is threaded rotatably mounted in and axially removable upward from said bearing, a whorl slidable longitudinally of said body member, means detachably to secure said whorl thereto, a driving belt on said whorl, a detachable roving engaging and twisting head extending adjacent the bite of the rolls and secured to the end of said tubular member, whereby the various elements thereof may be removed or installed without disturbing or stretching said driving belt by detaching said roving,

engaging and twisting head, loosening the means securing the whorl to said body memher, and removing said body member axially fr 1 1m its bearings upwardly away from said r0 s.

3. In a spinning frame, drawing rolls, a bracket mounted on the frame having closed cylindrical bearings extending substantially perpendicular to the rolls, a twister tube having a tubular body member through which the roving is threaded rotatably mounted in and axially removable upward away from said rolls from said bearings and a detachable roving engaging and twisting head extending adjacent the bite of the rolls and secured to the lower end of said tubular body member, said roving engaging head being of a size incapable of passing through said cylindrical bearings.

4;. In a spinning frame, drawing rolls, a bracket mounted on the frame having closed cylindrical bearings, disposed on an axis intersecting the bite of the rolls, a twister tube having a tubular body member through which the roving is threaded rotatably mounted in and axially removable from said bearings upward and away from the rolls, a whorl between said bearings detachably secured to said tubular body member and slidable longitudinally thereon, a detachable head of a size incapable of passing through said bearings secured to the lower end of said tubular body member engaging and twisting the roving as it issues from said tubular member and enclosed oil reservoirs in said bearings situated intermediate the upper and lower faces thereof.

5. In a spinning frame, the elements defined in claim 4 together with extensions on each of said bearings projecting forwardly and having filling orifices therein communicating with the oil reservoirs.

6. In a spinning frame, the elements defined in claim 4 together with oil feeding wicks within the oil reservoirs engaging substantially the full periphery of the tubular member;

7. In a spinning frame, drawing rolls, a bracket mounted on the frame having closed upper and lower cylindrical bearings, disposed on an axis intersect-ing the bite of the rolls, a twister tube having a tubular body member with a stop shoulder thereon rotatably mounted in and axially removable from said bearings away from said rolls, a bearing face on said upper bearing to be engaged by said step shoulder acting to limit the downward movement of said tubular member a whorl slidable on and detachably secured to said tubular member between said upper and lower bearings and a detachable roving engaging and twisting head secured to the lower end of said tubular member and of a size incapable of passing through said bearings.

8. In a spinning frame, a bracket mounted on the frame having closed upper and lower cyiindrical bearings, a twister tube having a tubular body member with a stop shoulder thereon rotatably mounted in and axially removable from said bearings, a countersunk bearingface in said upper bearing to be engaged by said stop shoulder to limit the downward movement of said tubular body member, a whorl slidable on and detachably secured to said tubular member between said upper and lower bearings and a detachable roving engaging twisting head secured to the lower end of said tubular member.

9. A spinning frame comprising drawing rolls, a closed cylindrical bearing, a twister tube having a tubular body member through which the roving is threaded rotatably mounted in and axially removable from said bearing upward and away from said drawing rolls, a whorl detachably secured to said body member of a size incapable of passing through said bearings, a frame on the lower end of said body member, a recess in the lower end of said body member, means in the frame adapted to enter said recess and act positively to: retainthe frame on said body membeg and meanson saidlframe to engage theroving as-it emerges from the bottom of saidnbody member and impart a false twist thereto; adjacent the bite of the rolls.

' In testimony whereof, I have signed my name to this specification.

HENRY AL OWEN.

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