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Jan. 22, 1963 M. V. ALTICE ETAL 3,074,286 TRAVERSE WINDING APPARATUS Filed March 27, 1961 2 Sheets-Sheet 1 on Jan- 22, 1963 M. v. ALTICE ETAL 3,074,286 TRAVERSE WINDING APPARATUS Filed March 27, 1961 6.2 so 2 Sheets-Sheet 2 United States Patent 0 cc IC€ Patented Jan. 22, 1953 2 3,074,286 Maryland "Virginia Altlce, New Castle, and Vincent ' TRAVERSE WENDING APPARATUS Howard Waldin and Warren Curlett Taylor, Wilming ton, Del, assignors to E. I. du Pont de Nemours and Company, Wilmington, Del. a corporation of Delaware Filed Mm. 27, 1%1, Ser. No. 98,588 15 Claims. (Cl. 74-59) a pair of end supports 10, 12, a rotatably driven barrel cam 14, a bridge 16, elongated upper and lower cover members 18, 28, and a yarn guide 22. A guide which is particularly suited for use with the present assembly has been disclosed by Altice and Waldin in copending ap plication Serial No. 859,323, ?led December 14, 1959. As best shown in FIG. 1, the end supports Ill, 12 have stepped peripheral surfaces 24, 26, 28‘, a bearing hous ing Sll and ‘a bore 32. Barrel cam 14» has a shaft 34» This invention relates generally to the traverse winding 10 which is journaled in a bearing 3d located in each bore 32. of yarn at high speeds and more particularly to improve Yarn guide 212' includes a follower portion which travels ments in the cam and rail assembly of a winding appa in ‘a continuous, generally helical cam groove 38 in the ratus. conventionally such an assembly includes a rotatably driven barrel cam having a continuous groove in which the follower portion of a reciprocating yarn guide travels. surface of cam 14 and is constrained to a reciprocating linear path of travel by rails 4;}, 42 which are bonded to the aligned longitudinal edges of cover members 18, 2d. The upper arcuate member 18 is slidable relative to intermediate surfaces 26 in covering relationship to cam The guide is constrained to a linear path of travel by a pair of rails which are bolted or otherwise fastened to the 14. Member 18 overlaps and fits beneath flange portions assembly frame in such a manner as to make it both 44 of bridge 16. it is urged downwardly into engagement di?icult and time consuming to disassemble the rails for 20 with stops as by the action of hairpin springs 48 which the replacement of a worn guide. There are similar ‘are fastened to the inner surf-ace of bridge 16 as at 58*. problems involved in positioning and aligning the rails on Each stop 46 is provided with a through passage 47 (PEG. the frame. Optionally, the cam and rail assembly may 3) for a suitable fastener by means of which it is at be provided with an independent cover or housing for tached to an end support, in a longitudinally extending protecting the equipment as well as its operator. 25 radial groove 51 (PEG. 2) provided therefor in outer The most important object of the present invention is cylindrical surface 24». to provide for the quick and easy replacement of a worn The lower cover member so also ?ts ‘against the inter guide in a traverse winding apparatus. mediate surfaces 26 on end supports lo, 12 and is held Another important object of the invention is the pro thereon by a pair of tabs so which are attached to the vision of improvements in a cam and rail assembly by 30 end supports, in notches 64%, by suitable fasteners 62. means of which the precise alignment of interrelated Although ‘the fasteners 62 are threaded to an end support, parts is facilitated. tabs an overlap a portion ‘of cover member 28', within A further object of ‘the invention is to provide guide notches 66, and thus wedge the cover member into en rails which are not only capable of extended use, but gagement with stops as. The latter are radially aligned also may be replaced easily. 35 and therefore function to locate and position rails 49, 42 These and other objectives are accomplished in a with respect to each other and with respect to the rota cam and rail assembly which includes a pair of spaced tional axis of barrel cam lid. Thus, ‘the spaced, parallel circular end supports on each of which a stop is peripher and aligned relationship of the rails is assured. ally mounted. A pair of opposed arcuate cover members The assembly is mounted on cradles 52, 54» in which are positioned against the stops, ‘the latter being radially 40 it is positioned by a pair of pins 56, 58 projecting from aligned. The ?rst cover member is mounted for sliding the housing 3h. Cradle 54 has been omitted from FIG. movement relative to the peripheral surfaces of the sup 2 for purposes of clarity. ports whereas the second cover member is ?xedly at As shown in FIG. 3, the cover member 18 has a V tached. Each member has a longitudinal edge to which groove 68 machined in its lower longitudinal edge and a formed rail is bonded. Means are provided to hold 45 has bonded thereto a formed rail insert 40 which, on its the first cover member against the stops which thus func exposed side, is generally complemental to the shape of tion to maintain the rails in proper spaced relationship. the opposed V-notches in stops 46. It should be noted Other objectives will become apparent in the fol that the stop 46 of FIG. 3 is that which would be located lowing speci?cation wherein reference is made to the ac at the left end of the assembly shown in FIG. 1. companying drawings in which: The rail inserts 40 may be formed from a suitable heat 50 FEGURE 1 is a side elevation of the instant cam and treated, wear-resistant material such as Ohio die steel by rail assembly, parts having been broken away and shown drawing or machining. Uusally, they are specially drawn in section to reveal details of the inner construction; to the desired shape, heat treated and electrolytically FIG. 2 is a fragmentary end view of the assembly coated with copper. After a liquid solder has been shown in FIG. 1; 55 brushed into groove 68 (FIG. 3), the parts are clamped FIG. 3 is a perspective view of a stop shown in asso together and brazed. When an insert has become worn iation with the upper rail and cover member of FIG. 1; or damaged, it is removed by tapping one end with a ham FIG. 4 is a plan view of one of the hairpin springs mer whereupon the insert may be peeled from its asso shown in FlGS. l and 2; ciated V-groove 68 and replaced as described above. In FIG. 5 is a fragmentary perspective view of an alter 60 this respect, the upper and lower cover members are sub nate embodiment of the stop shown in FIGS. l—3; stantially identical. FIG. 6 is a fragmentary plan view of an alternate em Each hairpin spring 48 has a pair of legs projecting bodiment of the means for holding the slidable cover member against the stops; from an eyelet 7t} and terminating in specially shaped feet FIG. 9 is a longitudinal section of the cover lock shown in FIG. 6. The cam and rail assembly chosen for purposes of illustration may be used, for example, in a winding ap foot 72 of each of the springs 48 engages the upper edge FlGS. 7 and 8 are bottom and side views of the cam 65 72 which engage the upper edge of a cover member 18 and urge the latter into engagement with stops 46. One member shown in FIGS. 6 and 9; and paratus of the type disclosed by Alzers in US. Patent No. 3,008,658 and includes generally as components thereof of the cover member 18 shown in FIG. 1. As is appar cut from FIG. 2, the other leg of each spring 48 is on the opposite side of a vertical centerline. In this location, they engage another cover member 18 (not shown) cor responding to that which has been described herein. 3,074,286 3. 4 Thus, a single cam assembly functions as an integral-com 6. The cam and rail assembly of claim 4 wherein the ponent of two separate back-to-back windups. holding means is a cam. . The, alternate embodiment shown in FIG. 5 consists of 7. In a traverse winding apparatus, a cam and rail a cylindrical pin or stop 46' which has opposed V-notches for the reception of rails, 40', 42*and which is press ?tted into a radial opening provided-therefor in the surface 26 of each end support member 10, 12. When used in combination with the other elements of assembly comprising: a pair of spaced end supports hav ing generally circular peripheral surfaces; a stop mount ed at the periphery, of each support, said stops being radially aligned; a ?rstelongated arcuate cover member mounted for sliding movement relative to said surfaces a suitable winding apparatus, the cam and rail assembly and having a longitudinal edge adapted for engagement disclosed herein operates conventionally in that guide 22 travels between rails 40, 42 and is reciprocated by the with said stops; means in engagement with said ?rst camming action of groove 38. After extended use at high speeds, the guide and rails 40, 42 are subject to wear. stops; and a second elongated arcuate cover member bers 18, 20 with a spare. positioning said rails. member for releasably holding the latter against said ?xedly attached to said supports, said second member having a longitudinal edge in engagement with said stops If it is only the guide which requires replacement, this may be accomplished quickly and easily by sliding cover 15 on the opposite side thereof from said ?rst member, said edges having a reciprocating guide positioned therebe member 18 upwardly against the bias of springs 48. tween. When a new guide is in place, springs 48 again urgecover 8. The cam and rail assembly of claim 7 wherein said member 18 and rail 40 into the associated V-notches of longitudinal edges have formed rails bonded thereto stops 46. If a rail becomes worn or damaged, it is only necessary to remove and replace one of the cover mem 20 and said stops have opposed notches for receiving and This also can be done in a 9. A cam and rail assembly comprising: a support; a barrel cam rotatably mounted on said support and hav ing in its surface a continuous groove; a cam follower in In the embodiment of FIGS. 6-9, upper cover member 18' overlaps and ?ts beneath bridge 16’. Cover mem 25 said groove; a pair of rails mounted on said support in spaced parallelism with the. rotational axis of said cam, ber 18' is provided with a slot 74 which receives a shoul~ at least one of said rails being slidably mounted for der 76 of knurled cam 78. The latter has an eccentric movement toward and away from the other rail; and, bore 80 within which a stud 82 is freely rotatable. Stud resilient means on said support in engagement with said 82 is ?xedly. attached to cover member 18' and is in threaded engagement with a knurled lock nut 84. When 30 one rail for biasing the latter toward the other rail, said rails having the follower positioned therebetween. lock nut 84 is disengaged, cam 78 may be rotated to raise 10. In a traverse-winding apparatus a cam and rail and lower cover member 18' with respect to stops 46 minimum of time in view, of the manner in which stops 46 function to align rails 40, 42 precisely. (FIG. 1). When the cam lock’ is set, shoulder 76 en gages cover member 18' within slot 74‘ and holds rail 40 against stops 46. Replacement of a cover member is facilitated by removal of nut 84 and cam 78 from stud 82. It is apparent that other changes and modi?cations may be made in the disclosed cam and rail assembly with out departing from the spirit of the present invention which is therefore intended to be limited only by the scope ofthe appended claims. We claim: . . 1. Ina traverse winding apparatus, a cam and rail as sembly comprising: a frame including a pair of spaced assembly comprising: a pair of spaced end supports; a ?rst elongated cover member mounted for ‘sliding move ment relative to said supports; a second elongated cover member ?xedly attached to said supports, said members having aligned parallel longitudinal edges, said edges each having an elongated rail bonded thereto and having a reciprocating guide positioned therebetween; and spring means in engagement with said ?rst member for urging the member and the rail thereon toward the rail on said second member. 11. A cam and rail assembly comprising: av pair of spaced end supports havingrgenerally circular peripheral endsupports; a stop mounted on each, support; a cover 45 surfaces; a barrel cam rotatably mounted between said supports and having in its surface a continuous groove; member mounted on said supports for sliding movement toward and away from said stops, said cover member hay: a follower in said groove; a ?rst elongated arcuate cover engagement with said stops; a second railrstructure ?xedly member bridging the distance between and mounted for sliding movement relative to said surfaces; a second elon structure against said'stops, said structures having a re the follower positioned therebetween. inga ?rst rail structure bonded, thereto and adapted for attached to said endsupports in engagement with said 50 gated arcuate cover member ?xedly attached to said sup ports; spring means in engagement with said ?rst mem stops on the opposite sidev thereof from said ?rst rail ber for biasing it toward said second member, said mem structure; and‘meanson said frame in engagement with bers having aligned parallel longitudinal edges having said cover member for releasably holding said ?rst rail ciprocating guide positioned therebetween. _ t 2. The cam and rail assembly of claimtl wherein the holding means is a spring. . . 3. The cam and rail assembly of claim 1 wherein, the holding means is a cam. , 4; In a traverse winding apparatus, a cam and rail as sembly comprising: a’ frame, including, a pair of spaced end supports; stop means on each support; a pair of elon gated’ rail‘ structures spanning the distance between said supports, oneof said structures being mounted onthe supports for-sliding movement toward and away from the 12. The assembly of claim 11 wherein is provided a stop on each end support, said stops being radially aligned and having opposed notches for receiving said edges. 13. The assembly of claim 11 wherein each end sup port has a stop projecting therefrom, said stops being radially aligned and having opposed notches for receiving said edges. 14. In a traverse winding apparatus, a cam and rail assembly comprising: a frame including a pair of spaced end supports and a bridge spanning the distance between 65 the supports; a stop mounted on each support; a ?rst elon-r gated cover member mounted on said frame for sliding stop means, the other structure being ?xedly attached‘to movement relative to said supports; a second elongated the supports in engagement with said stop means onthe cover member ?xedly attached to said supports, said opposite side thereof from said one structure; and means members having aligned parallel longitudinal edges, said on the frame in engagementwithsaid one structure for 70 edges each having an elongated rail bonded thereto and 'releasably holding the latter against said stop means, said having a reciprocating guide positioned therebetween; structures having a reciprocating guide positioned, there between. 7 5. The cam and rail assembly of claim 4 wherein the holding means is a spring. * and a cam movably mounted on said bridge, said cam having a surface normally in engagement with said ?rst cover member for releasably holding the rail thereon in 75 engagement with said stops. ' 3,074,286 5 15. A cam and rail assembly comprising: a frame in cluding a pair of spaced end supports having generally circular peripheral surfaces; a barrel cam rotatably mount ed between said supports and having in its surface a con tinuous groove; a follower in said groove; a stop mount~ ed at the periphery of each support, said stops being radi ally aligned; a ?rst elongated arcuate cover member mounted for sliding movement relative to said surfaces and having a longitudinal edge; cam means on said frame, said cam means including a surface normally in engage 10 ment with said ?rst cover member for releasably holding the longitudinal edge thereof against said stops; and a second elongated arcuate cover member ?xedly attached to said supports, said second member having a longitudi nal edge in engagement with said stops on the opposite side thereof from said ?rst member, said edges having said follower positioned therebetween. 6 References Cited in the ?le of this patent UNITED STATES PATENTS 84,107 459,039 1,657,181 2,216,990 2,225,623 2,251,838 2,573,415 Gerow ______________ __ Nov. 17, 1868 Foster ________________ __ Sept. 8, Sande _______________ _._ Jan. 24, Taylor ____________ __,.._.._ Oct. 8, Crawford ____________ __ Dec. 24, Baker ________________ __ Aug. 5, Ebert ________________ __ Oct. 30, 1891 1928 1940 1940 1941 1951 FOREIGN PATENTS 219,099 Australia _____________ __ Dec. 2, 1958 OTHER REFERENCES Mechanical Springs~Their Engineering and Design, copyright 1944, received Pat. Off. Jan. 24, 1945, Div. 46 (only pages 53, 96 are pertinent).