US2753126A

US2753126A - Yarn winding drum

Info

Publication number: US2753126A
Application number: US416762A
Authority: US
Inventors: Marcellus Lydia Bergstrom
Original assignee: Barber Colman Co
Current assignee: Barber Colman Co
Priority date: 1954-03-17
Filing date: 1954-03-17
Publication date: 1956-07-03
Anticipated expiration: 1973-07-03

Description

July 3, 1956 P. B. MARCELLUS J 11 YARN WINDING DRUM Filed March 1'7, 1954 5 Sheets-Sheet 3 IN VEN TOR. P/7 /'///'ps Ema/f5 Name/M5, Decease d Lye fa Begszrom Mane/Kw; fi ecuzrrbr BY MR, 4 60%;

ATTORNEYS y 3, 1956 P. B. MARCELLUS 2,753,126

YARN WINDING DRUM Filed March 17, 1954 5 Sheets-Sheet 4 IN V EN TOR. P/Yf/los Ema/ 3 /7arce //U6, Deceased L 51d fa flags fro/r7 Mme/m5, EYeculf/k BY My W (a) July 3, 1956 P. B. MARCELLUS 2,753,126

YARN WINDING DRUM Filed March 1'7, 1954 5 Sheets-Sheet 5 IN V EN TOR. Pb fl/z'ps Ema/f5 Mame //1/5 ec eased Lydia Be 95 fro/17 Name/k0; [xecuzfr/k B Y W AWv- Aria/mm;

United States Patent YARN WIN DING DRUM Phillips Brooks Marcellus, deceased, late of Rockford,

Ill.., by Lydia Bergstrom Marcellus, executrix, Rockford, 111., assignor to Barber-Colman Company, a corporation of Iliinois Application March 17, 1954, Serial No. 416,762

9 Claims. (Cl. 242-43) This invention relates to a drum for winding yarn at high speed by driving the yarn package such as a cheese, cone or the like and having an outwardly opening groove extending helically around and along the drum periphery to receive the yarn approaching the package and traverse the same back and forth. In drums of this character, the groove takes the form of a figure eight with the opposite end loops thereof bent laterally from the point of crossing and encircling opposite end portions of the drum so that by-passing back and forth between the two grooves the yarn traverses a range substantially equal to the full length of the drum.

The general object is to provide a drum of the above character which is simple and inexpensive to manufacture by virtue of its construction in separate parts which form the drum periphery and define different parts of the figure eight groove.

Another object is to construct the separate parts in a novel manner such as to enable them to be formed as sheet metal stampings.

A further object is to provide a novel construction of the intersection or cross between the two grooves whereby to insure proper crossing over of the yarn from one groove to the other under all conditions that may be encountered in service.

Still another object is to provide a cross-over structure in which the major wear in service occurs on one part which is readily removable and replaceable.

The invention also resides in the novel construction and arrangement of the parts which facilitates formation thereof as well as fabrication and assembly with a minimum of hand finishing operations.

Other objects and advantages of the invention will become apparent from the following detailed description taken in connection with the accompanying drawings, in which:

Figure l is a front elevational view of a winding drum embodying the novel features of the present invention.

Fig. 2 is a rear elevational view.

Fig. 3 is a diametrical sectional view taken along the line 33 of Fig. 4.

Fig. 4 is a development view of the drum surface.

Fig. 5 is a diametrical sectional view taken along the line 5-5 of Fig. 1.

Fig. 6 is an exploded elevational view with certain parts broken away and shown in section.

Fig. 7 is a similar exploded view of the central part of the drum.

Fig. 8 is an end view of the central part of the drum.

Fig. 9 is an exploded perspective view of the drum.

Fig. 10 is a fragmentary exploded perspective view of the cross-over device.

Fig. 11 is a fragmentary perspective view of the crossover portion of the drum.

In the form shown in the drawings, the improved winding drum indicated generally at 10 is an elongated cylinder whose periphery is interrupted by two outwardly opening peripheral grooves 11 and 12 which encircle and Patented July 3, 195 8 extend helically back and forth around opposite end portions of the drum and intersect each other at a cross 13 so as to form a figure eight whose opposite loops are bent laterally from the cross. The cylindrical periphery of the drum is divided by the grooves into

opposite end portions

18 and 19 and an intermediate portion 20 whose adjacent spaced edges coact to define the grooves 11 and 12.

The inner and

outer walls

14 and 15 of the groove 11 substantially parallel each other throughout the length of this groove and the

walls

16 and 17 of the groove 12 are similarly spaced over the trailing half portion of this groove. The leading half portion of the latter groove is widened substantially to insure proper entry of the yarn laid against the drum periphery. This is accomplished by stopping the inner wall 16 of the groove 12 at a point 21 short of the point of yarn cross-over and offsetting the point 21 from the center of the cross. The groove thus tapers gradually away from its maximum width adjacent the cross. The grooves 11 and 12 are inclined at substantial angles relative to a perpendicular plane of the drum. Herein the

axially projecting apices

22 and 23 are disposed close together and define the center of the cross but are offset circumferentially a short distance as best shown in Fig. 4. The other or circumferentially projecting

apices

24 and 25 are spaced farther apart and, because of the widening of the groove 12, the apex 25 is offset laterally from the center of the cross.

In the winding of a package resting on and driven by the drum, the yarn approaching the package lies in one of the grooves 11 and 12 and, as the drum rotates, follows the contour of this groove. After the cross-over at 13, the inner wall of the groove 11 guides the yarn outwardly along the drum for a half revolution after which the outer wall 15 carries the yarn inwardly to the point of crossover or transfer into the groove 12. Thereupon the guiding action is repeated by the inner and

outer walls

16 and 17 acting successively to move the yarn outwardly to the left end of the drum and then reversely to the cross-over point. After a new strand has been tied onto a partially formed package and laid against the central part of the drum, this strand will, when tensioned by the initial turning of the package by the drum, be drawn into the upwardly moving widened portion of the groove 12 after which the two grooves 12 and 11 operate successively to traverse the yarn first to the left and then to the right of the cross over 13. During this movement, the yarn engages progressively along the groove walls as indicated by the arrows in Fig. 4.

In accordance with the present invention, the

parts

21, 22, and 23 of the drum are formed as separate struc tural parts that cooperate with each other in the final assembly to define the bottom and both side walls of the two grooves 11 and 12. At the same time, the construction of each part is such that they may be formed as sheet metal stampings. The part 19 (Figs. 1, 3 and 9) comprises a cylinder 26 squared at its outer end and terminating at its inner end in a right angle bend 27 which defines the outer edge of the groove 11. The bottom of the latter is defined by a cylindrical hub 28 concentric with the drum axis and terminating at its inner squared end in an inturned flange 29. The hub is very narrow adjacent the cross 13 but increases in width progressively in both directions from this point and around the drum to the outermost part of the groove. A web disposed perpendicular to the cylinder 26 and the hub 28 and integrally joining the two forms the outer side wall 17 of the groove. The outer end of the cylinder 26 is closed by a disk 30 having a flanged center hole 31 and a flange 32 extending around the outer periphery and pressed into the cylinder 26 to which the flange is joined as by spot welding.

- The stamping 18 forming the other end portion of the drum and the bottom and outer wall of the groove 11 is identical in size and shape to the first stamping except for the slight offsetting of the apex 22 from the apex 23 to shape the cross over 13 as above described. Accordingly the corresponding parts of the second stamping are identified by the same but primed reference numerals.

By forming the

parts

18 and 19 as sheet metal stampings, all of the surfaces thereof which define parts of the grooves 11 and 12 are inherently rounded and permit free sliding of the yarn therealong. This is true particularly of the

bends

27 and 27 which not only define the outer ends of the grooves but also form the two

apices

22 and 23 of the cross over 13. p

The intermediate unit 2t) is of equally simple construction insofar as the

inner groove walls

14 and 16 and the

apices

24 and 25 of the cross over 13 are concerned. These elements are formed by a metal sheet 34 punched to correspond to the shape of the inner walls of the grooves 11 and 12 and bent into arcuate shape to lie on a cylinder of revolution of the same diameter as the

cylinder

26 and 26. The pointed end 25 and the more blunt end 24 are spaced apart circumferentially to provide for the desired crossing of the grooves.

In the present instance, the arcuate sheet 34 is wrapped around and secured to two

circular disks

36 and 37 cut away adjacent the cross over 13 and rigidly joined back to back as by spot welding. Flanges 35 around the disk periph-' cries are spot welded to the sheet 34 and form therewith a rigid unit. Flanges 38 around center holes in the disks are of the same size as the flanges 31 and cooperate with the latter to provide an elongated mounting hub for the final drum assembly. By sanding off any burrs resulting from punching of the sheet 34, the edges of the latter are made sufficiently smooth to guide the yarn without danger of breakages as it follows along the groove

inner walls

14 and 16 which these edges of the sheet define, there being no connecting web as in the case of the outer walls.

As a safety measure and to prevent any part of the operators hand from being caught accidentally in the widened part of the groove 12, the inner side of this part of the groove is closed by a web 39, The latter comprises a strip of sheet metal following the contour of the wall 16 and having right angular lugs 40 lying against and spot welded to the inner surface of the sheet 34 with the exposed face of the web coinciding with the edge of the sheet and preferably converging inwardly toward the opposed web 17. If desired, the web 39 may be brazed to the sheet 34 along the groove edge 16. Herein the web is shallower than the groove 12 since it is provided only as a safety measure. That is to say, if a finger of the operator is inserted accidentally into the widened part of the groove 12, the side wall 39 thereof will in the continued upward movement of the groove, act as a cam and force the finger radially out of the groove.

As the yarn approaching the cross 13 along the wall 17 of the groove 12 passes out of the latter, it is transferred into the diagonally opposite end of the groove '11 by the positive action of a guide 41 which extends across the widest end of the groove 12 and is' alined with the outer wall 17 of the groove 12 and the inner wall of the groove 11 on the opposite side of the cross over 13. This guide may be formed conveniently by extending the web 39 above described beyond the tip of the apex 25 and bending the extension laterally and into alinement with the wall 17 at the trailing end of the groove 12. Herein, the end of the extension 41 is projected into a slot 42 which is cut in the web 17 at the tip of the apex 23 on the part 19. Thus, the extension 41 whose width is substantially equal to the full depth of the groove 12 forms a continuation of the wall 17 of this groove and effectually guides the yarn across the widened mouth and into the leading end of the opposite groove 11. Since the yarn, while being traversed back and forth rides the bottoms of the grooves, any possibility of the yarn being shunted into the widened part of the groove 12 is effectually avoided. From Fig. 8, it will be observed that the outer edge of the cross over guide 41 is disposed close to the outer surface of the drum.

As the yarn being traversed passes out of the trailing end of the groove 11 and enters the leading widened end of the groove 12, it must pass over the guide member 41 whose upper edge 42, if permitted to contact the yarn during each cross over, would wear down in service. In another aspect, the invention aims to avoid contact between the yarn and the guide 41 and limit the engagement of the yarn during transfer from the groove 11 to the groove 12 to a part whose service life may be prolonged by hardening and which is readily replaceable when it becomes worn. Herein, the hardened part comprises a member 43 of L-shape having a short leg 43 extending across the trailing end of the groove 11 at the apex 22 of the cross over 13. The member comprises a metal plate whose long leg 43 is adapted to be inserted edgewise in between the laterally offset corner portions 44 where the

disks

36 and 37 are cut away adjacent the cross over point. These portions spring apart to permit the leg 43 to enter until short laterally spaced punched out projections 45 thereon enter correspondingly spaced slots 46 in the parts 44.

During the insertion of the member 43 between the

disks

36 and 37, the outer end of the short leg 43 enters a notch 48 cut in the stamping 18 at the apex 22 formed thereby. Thus, when the member 43 is pressed into place with the outer edges of the short and

long legs

43 and 43 substantially flush with the drum surface, the member is locked rigidly to the drum. In the rotation of the latter to traverse the yarn back and forth, the yarn, on reaching the trailing end of the groove 11, encounters the upper edge of the leg 43 and is raised above the bottom of the groove far enough to pass over the guide 41 and enter the widened part of the groove 12 without contact with this guide.

When, due to the rubbing contact with the yarn being wound, the outer edge of the member 43 becomes worn down an objectionable amount, this member may be removed and replaced easily. To this end, the portions 44 of the

disks

36 and 37 are wedged apart permitting the member 43 to be lifted out of the slot 48. A new similarly hardened member is inserted and locked in place as described above. a

In the present instance, means. is associated. with the replaceable guide member 43 to engage the yarn and carry it over the cut away edge portions of the

disks

36 and 37 so as to avoid any possibility of the yarn catching therein as it transfers from the groove 12 to the groove 11. This means, as herein shown, comprises an arm 50' (Fig. 10) projecting at right angles from a plate 51 lying against and secured to the short leg 43 of the replaceable member 43. The arm 50, which may be hardened, lies in the plane of the

disks

36 and 37 and overlies the cut away edges thereof at the bottom of the cross over 13.

After fabrication of the central unit 20 in the manner described above, it is combined with the

stampings

18 and 19 and the three units are fastened together to form a unitary drum structure. To facilitate this, fiat lugs 52 and "53 are spot welded to the interior of the sheet 34 in positions to enter

slots

54 and 55 sawed or otherwise cut in the widest parts of the hubs 28 and 28'. Following assembly of these parts, in end to end relation with the lugs 52 and '53 disposed in the

slots

54 and 55, and the end of the extension 41 projecting into the slot 42, the parts are joined together rigidly as by rivets 56 extending through alined holes in the hub flanges 29. At this time, the cylinders 26 and 26' and the sheet 34 wrapped around the

disks

36 and 37 are in precise axial alinement and will, after final grinding of the periphery of the assembly form a true cylinder of revolution.

7 The drum thus formed is extremely rugged in con-,

struction and well adapted for operation at winding speeds on the order of 1800 yards per minute. In addition'to its low manufacturing cost, the drum may be formed with grooves of any desired depth and width and is so strong as not to be subject to distortion in service use. The hand operations required in order to finish the drum are reduced to a minimum and the only parts subject to appreciable wear in service use are adapted to be rendered wear resistant by hardening and at the same time may be replaced quickly and cheaply.

The claimed invention is:

l. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, an integral sheet metal stamping comprising a cylinder having a hub at its inner end forming the bottom of one of said grooves and an intermediate right angular wall forming the outer side of said first groove and one side apex of said cross, a second similar stamping having a cylinder at the other end of the drum and defining the bottom and outer side wall of said second groove and the other side apex of said cross, a disk disposed between and secured to the inner ends of the hubs of said stampings, and an arcuate sheet encircling and secured to said disk and disposed between said cylinders to form with the latter a common cylinder of revolution, opposite side edges of said sheet forming the inner walls of said first and second grooves and tapering at their ends to define the other apices of said cross.

2. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two sheet metal cylinders axially spaced apart and defining the outer edges of said grooves and two apices of said cross, hubs rigid with the inner ends of said cylinders and defining the bottom of said grooves, an arcuate metal sheet of the same radius as said cylinders encircling the drum axis and defining the inner edges of said grooves and the other two apices of said cross, and separately formed means attached to said cylinders and said sheet, and rigidly joining the same into a unitary assembly.

3. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two sheet metal cylinders axially spaced apart and defining the outer edges of said grooves and two apices of said cross, a disk disposed between said cylinders, an arcuate metal sheet of the same radius as said cylinders wrapped around and secured to said disk and defining the inner edges of said grooves and the other two apices of said cross, and means rigidly joining said cylinders and said sheet.

4. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two cylinders axially spaced apart and defining the outer edges of said grooves and two apices of said cross, hubs rigid with the inner ends of said cylinders and defining the bottom of said grooves, an arcuate sheet of the same radius as said cylinders encircling the drum axis and defining the inner edges of said grooves and the other two apices of said cross, and separately formed means attached to said cylinders and said sheet and rigidly joining the same to form a unitary assembly.

5. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two cylinders axially spaced apart and defining the outer edges of said grooves and two apices of said cross, hubs rigid with the inner ends of said cylinders and defining the bottom of said grooves, an arcuate sheet of the same radius as said cylinders encircling the drum axis and defining the inner edges of said grooves and the other two apices of said cross, separately formed means attached to said cylinders and said sheet and rigidly joining the same to form a unitary assembly, the leading end of one of said grooves being widened adjacent said cross and tapering circumferentially around the drum, a member extending across the inlet end of the widened groove to guide the yarn being wound through said cross from the trailing end of the widened groove to the inlet end of the other groove, and a second member extending across the trailing end of the latter groove and to lift the yarn leaving such groove and hold the same above the edge of said first member during transfer of the yarn into the widened groove.

6. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two cylinders axially spaced apart and defining the outer edges of said grooves and two apices of said cross, hubs rigid with the inner ends of said cylinders and defining the bottom of said grooves, an arcuate sheet of the same radius as said cylinders encircling the drum axis and defining the inner edges of said grooves and the other two apices of said cross, means rigidily joining said cylinders and said sheet to form a unitary assembly, the leading end of one of said grooves being widened adjacent said cross and tapering circumferentially around the drum, a member extending across the inlet end of the widened groove to guide the yarn being wound through said cross from the trailing end of the widened groove to the inlet end of the other groove, 21 second member extending across the trailing end of the latter groove and to lift the yarn leaving such groove and hold the same above the edge of said first member during transfer of the yarn into the widened groove, and means on said assembly removably supporting said second memher for insertion into and removal from the assembly.

7. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two cylinders axially spaced apart and defining the outer edges of said grooves and first and second axially projecting apices of said cross, hubs rigid with the inner ends of said cylinders and defining the bottom of said grooves, an arcuate sheet encircling the drum axis and defining the inner edges of said grooves and the third and fourth circumferentially projecting apices of said cross, separately formed means attached to said cylinders and said sheet and rigidly joining the same to form a unitary assembly, a member extending across the inlet end of the first of said grooves from said first apex to said third apex, and a second member extending across the outlet of the second groove from said fourth apex to said second apex and operable to hold the yarn above said first member in passing through said cross from the second groove into the first groove.

8. A winding drum having first and second grooves encircling opposite end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two cylinders axially spaced apart and defining the outer edges of said grooves and first and second apices of said cross, an intermediate unit disposed between and rigid with said cylinders and encircling the drum axis to define the inner edges of said grooves and the third and fourth apices of said cross, the leading end of one of said grooves being widened adjacent said cross and tapering circumferentially around the drum, a member extending across the inlet end of the widened groove from said third apex to said first apex and operable to guide the yarn being wound through said cross from the trailing end of the widened groove to the inlet end of the other groove, a second member extending across the trailing end of the latter groove and to hold the yarn leaving such groove out of contact with said first member during transfer of the yarn into the widened groove, and means on said drum assembly supporting said member for insertion in and removal therefrom.

9. A winding drum having first and second grooves encircling oppos'i'te end portions of the drum to form a figure eight having a cross intermediate the drum ends, said drum having, in combination, two cylinders axially spaced apart and defining the outer edges of said grooves and first and second apices of said cross, an intermediate unit disposed between and rigid with said cylinders and encircling the drum axis to define the inner edges of said grooves and the third and fourth apices of said cross, the leading end of one of said grooves being widened adjacent said cross 10 and tapering circumferentially around the drum, a member extending across the inlet end of the widened groove from said third apex 'to said first apex and operable to guide the yarn being wound through said cross from the trailing end of the widened groove to the inlet end of the other groove, and a second member extending across the trailing end of the latter groove and to hold the yarn leaving such groove out of contact with said first member during transfer of the yarn into the widened groove,

References Cited in the file of this patent UNITED STATES PATENTS 2,184,723 Park-s Dec. 26, 1939 FOREIGN PATENTS 850,155 France Sept. 4, 1939 50,368 France Jan. 16, 1940 (Addition) 963,102 France Dec. 19, 1942