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Publication numberUS3661342 A
Publication typeGrant
Publication dateMay 9, 1972
Filing dateAug 19, 1970
Priority dateAug 19, 1970
Publication numberUS 3661342 A, US 3661342A, US-A-3661342, US3661342 A, US3661342A
InventorsSears Charles K
Original AssigneeJackson Controls Co Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Operative winding separator
US 3661342 A
Abstract
A partition mountable on a core to form winding spaces on a bobbin, the partition having a plurality of coacting surfaces cooperatively operative to captivate and conduct a strand being wound on the core from one side of the partition to the other.
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United States Patent Sears I 4 1541 OPERATIVE WINDINGSEPARATOR 72 Inventor: Charles K. Sears, Chicago, 111.

[73] Assignee: Jackson Controls Company, Inc., Chicago,

Ill.

[22) Filed: Aug. 19, 1 970 [21] Appl.No.: 64,995

[52] U.S.Cl...

[56] References Cited uumzo STATES PATENTs' 1 2,604,275 7/1952 Hull .,...242/11s.41

"242/1184", 336/208 1 51] ..B65h 75/14 H0lf27/30 v [581' Field oi Search ..242/i 18.41, 8; 336/l98, 208

1 51 May 9, 1972 1,272,228 -2/1942 Thornburg .f. ..242/117 3,461,414 8/1969 Fedron ..-...242/11sx Primary Examiner-George F. Mautz Assistant Examiner-Edward J McCarthy Attorney-Rummler & Snow 1 1511 sneer A partition mountable on a core to form winding spaces on a bobbin, the partition having a plurality of coacting surfaces cooperatively operative to captivate vand conduct a strand being wound on the :core from one side of the partition to the other.

12 Claims. IZDnwing figures PATENTEDMY We 3,661,342 v SHEET 2 HF vZ //vvE/vr0/?. CHARLES K. SEARS Fi-H 5.

1 OPERATIVE WINDING SEPARATOR BACKGROUND OF THE INVENTION The instant invention has been directedtoward the problem of constructing a coil having successive windings wound on a tape. After many experiments, a practical solution has been found to make up a plurality of closely arranged separate windings which are serially connected to each other without stopping thewinding machine. The separate windings are set apart by an insulating partition which is secured tov the core to form a bobbin. The subdividing of'thebobbin winding is done to reduce the potential difference betweenany two adjacent turns. By subdividing the windings into sections is to reduce. the volts per layer to such a value that the magnet wire insulation will not break down. However, the manufacturing costs of sucha coil must be minimized in order that it can be commercially practical. Onemethod of minimizing these costs is'to assure that such multiplewindings be wound quickly andefficiently without extensive set-up or modification of existing equipment. Also, it is desirable in many applications that each of the succeeding windingson the core be serially wound by a single strand in a continuous manner without the need to stop at each subordinate winding to place or fit the strand in proper orientation across the separating-partition. v

An object of the invention is to provide a partition mountable on a core to form a bobbin therewith, wherein the partition serves to separate a coil into individualwindings and is also operative to act upon a' strand during winding operations FIG. 7 is a sectional view: taken substantially at line 7-7 of FIG. 5;

FIG. .8 is a sectional view taken substantially at line 8-8 of FIG. 5;

FIG. 9 is a fragmentary sectional view taken substantially at line 9-9 of FIG. 3;

FIG. 10 is a fragmentary sectional view taken substantially at line l0-l0 of FIG. 3;

FIG. I l is a sectional view taken substantially at line 1 I-- I I of FIG. 3; and 1 FIG. 12 is a sectionalview taken substantially at line 12-12 of-FIG. 3'.

DESCRIPTION OF THE PREFERRED EMBODIMENT consequenceas relatedto the invention itself.

whereby that strand is arranged transversely of the partition such that it is in proper orientation for construction of another winding in a succeeding space. v

Another object of the invention is to provide that the partition be adaptable for usein coil-winding operations wherein the strand and the partition move transversely and circumferentially relative to each other.

A still further object of the foregoing is to provide that during the winding operations, the partition be operative to captivate and conduct the strand thereacross as the stra'ndtrans versely engages the peripheral edge of the partition.

A stillfurther object of the invention is to provide that the partition have a plurality of cooperating surfaces coacting with the strand to effect a transfer of the strand thereacross such that the strand traverses through the partition inwardly of the peripheral edge thereof.

Another object of the foregoing is to provide that the action of the partition on the strand, effecting the captivating and the transverse conducting of the strand across the partition, occur during continuous winding operations wherein it is not necessary to interrupt the winding of the coil to effect 'such a transfer.

These and other objects and advantages will become more readily apparent-when the following description delineating the construction and operation of the instant invention is read in conjunction with the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. I. is a perspective view of a bobbin having separating partitions which incorporate the inventive concept herein disclosed;

FIG. 2 is an enlarged perspective view of one of the partitions of FIG. I; v

FIG, 3 is an elevational view of the lead or obverse side of the partition;

FIG. 4 is a plan view of the partition;

FIG. 5 is an elevational end view of the partition;

FIG. 6 is an elevational view of the reverse shed the partition;

Turning attention to FIGS. 2 through 6, it can be seen that peripheral edge 20. The partition hasacentrally located op'en ing 22 shaped to snugly'fit on the core 12.

As best seen in FIG. 3, a lead surface 23 is formed on the obverse side 18 anddisposed angularly from the peripheral edge 20 to produce a bevel thereat which extends about the partition.

A transfer surface, generally. designated 25, defines-an indentation inthe form of a recess 26 and channel 27 (see FIG. 4) each of which extends inwardly into the partition 14 from the peripheral edge 20thereof. The recess 26 and channel 27 are cooperatively arranged to provide communication between the obverse and reverse sides at locati ons inwardly of theperipheral edge 20. The recess26 extends-partially into the partition from an opening 28 on the obverse side 18. It can be seen-that'the lead surface 23 terminates at the opening 28 to form thereat a side wall 30 and a common edge 31.

The other side of the recess 26 is bounded by a radially disposed intercepting surface 33 oriented in normal alignment with the principal axisX-X of the core 12. This surface 33 is arranged in flanking relation to the opening 28 and in circumferential alignment with the common edge 31. Abeveled surface34'extending angularly from the peripheral edge 20 to the partially obverse side terminates at the intersecting surface 34. It can the point and is disposed in transversealignment to the common edge 31, that is, a projection of the intercepting edge 40 traverses the common edge 31. Also of equal importance is that the point 38 is positioned outwardly beyond any point on the common edge 31.

The recess 26 and channel 27 have a common back wall 41. The recess has a bottom surface 42 which merges with a ramp surface 43 of thechannel 27. The. ramp surface 43 extends inwardly between the sides (18, 19) of the partition from a position adjacent the intercepting edge 40 to terminate proximate the. core 12 as seen in FIG. 7 The back wall 41 has an inwardly curving edge 45 which begins its arcuate path approximately from that portion of the recess 26 bounded by side wall 30 and continues to curve inwardly until it terminates coincidentally with the inward termination of the ramp surface 43. (See FIG. 8.)

As best seen in FIG. 6, the reverse side 19 has a relief surface 48 which is arranged angularly inward to form a fold line 49 at said one wall 36 of the channel 27. The relief surface 48 and its attendant fold line 49 are oriented at an angle substantially perpendicular to the principal axis x-x of the core 12 with the fold line 49 extending outwardly to the peripheral edge 20 from the place of termination of the ramp surface 43 and the inwardly curving edge 45. A wiping'surface 51 is also located on the reverse side 19. This surface 51 is angularly disposed relative to the reverse side 19 and intersects with the relief surface 48 as shown.

For the purpose of disclosure only, it being understood that the present invention is not limited to values hereinafter described, the various previously described surfaces having relative angular orientations as designated by letters in the figures may ,have approximate values in degrees as listed, wherein A is 45, B is 60, C, D and E are 45, F is 30, and G is 15.

The partition 14 not only serves as a permanent partition for separating serially arranged windings on a common core, but also is operative to act upon a strand to captively transfer the same to a succeeding winding space during winding operations. In the usual winding operation, the strand is circumferentially moved relative to the bobbin and the principal axis of the core thereof. The strand is then traversed back and forth axially of the core within a winding space until a designated number of turns are wound thereon. When this occurs, the strand is transversely advanced until it advances across the partition 14 whereat the strand engages the lead surface 23 as depicted in FIG. 2. It must be remembered that at this time, the strand and partition 14 are moving relative to each other as indicated by the arrows shown in FIG. 2. As the strand passes into the opening 28 of the recess 26, the curving edge 45 of the back wall 41 tends to give relief to the strand to move inwardly of the partition 14. Because the lead surface 23 is transversely disposed to the intersecting surface 33 and edge 40, the strand will be engaged thereby and guided into the channel 27. Due to the relative circumferential movement, the strand is conducted down to the ramp surface 43 between the walls 36 and 41 and is guided inwardly by the inwardly curving edge 45 of the back wall 41. At the same time, the relief surface 48 guides the strand out from between the walls (36, 41) to the'reverse side 19 while the strand continues inwardly of the partition until finally it reaches the most inward part of the channel, i.e., the termination place of the ramp surface 43, the

' inwardly curving edge 45 and the fold line 49. of the relief surface 48. It is here that the strand emerges from the interior of the partition at a position adjacent the core 12 in a proper orientation for commencement of winding operations on a succeeding winding, or, if desired, termination of the coil.

It can be seen by the preceding description that the instant invention furnishes a novel partition for separating winding on a single core wherein that partition also provides the means for engaging, captivating, and then captively conducting a strand being wound thereon across the partition without interrupting winding operations. The partition protectively retains that portion of the strand disposed therein and positions the strand emerging from the partition in a suitable location for either subsequent winding operations or termination of the coil.

It will be appreciated that the embodiment of the invention chosen for the purposes of illustration and description herein is that preferred based upon requirements for achieving the objects of the invention and developing the utility thereof in the most desirable manner, due regard being had to existing factors of economy, simplicity of design and construction, production methods and the improvements sought to be of fected. It will be understood that the particular structure and functional aspect emphasized herein are not intended to exclude but rather to suggest such other modifications and adaptations as fall within the spirit and scopeof the invention as hereinbefore described.

lclaim:

1. In a. b 0bbin having a core and adaptable for winding thereon a strand having a transverse and circumferential relative movement between said strand and said core, the improvement comprising a partition transversely mounted on said core and operative to receive and captively conduct said strand thereacross, said partition including obverse and reverse sides terminating in a peripheral edge circumferentially disposed about said core;

a strand transferring surface in the form of a recess extending circumferentially and inwardly of said peripheral edge and defining an opening with said obverse side and said transferring surface forming a channel opening to said peripheral edge and conductively communicating said recess with said reverse side of said partition;

an intercepting surface on said obverse side disposed in v strand feeding relation to said transferring surface; and a lead surface on said obverse side disposed to guide said strand into receiving relation with said intercepting surface as said strand transversely engages said peripheral edge and relatively moves along said lead surface to said intercepting surface into said recess.

2. A partition for separating windings on a core and operative to captively transfer thereacross a strand movable transversely and circumferentially relative of this partition, said partition comprising a peripheral edge circumferentially disposed about said core; v

lead means on said partition and engageable with as it traverses against-said partition;

intercepting means on said partition disposed to interceptively receive the strand from said lead means as the strand moves circumferentially of said partition; and

transfer means including a recessed surface extending inwardly from said edge to define an indentation therein extending generally circumferentially so as to be operative for captively conducting the strand from one side of the partition to the other. I

3. The invention as recited in claim 2 wherein said lead means comprises a feed surface obliquely disposed relative to said core on said one side of said partition, said feed surface extending partially about said peripheral edgeand terminating to form a common edge with said recessed surface.

4. The invention as recited in claim 3 wherein said intercepting means comprises a guide surface radially'disposed in contiguous flanking relation to said recessed surface and forming therewith a strand intercepting edge transversely disposed in spaced relation to said common edge.

5. The invention as recited in claim 4 wherein said guide surface extends to said peripheral edge whereat said intercepting edge forms a distal end'therewith, and said end projects outwardly from said core a distance greater than said common edge.

6. The invention as recited in claim 1 wherein said intercepting surface being disposed contiguous with said transferring surface at said recess to form thereat a radially extending strand guiding edge disposed adjacent said channel.

7. The invention as recited in claim 6 wherein said lead surface being disposed angularly to said core in slanted orientation from said peripheral edge to said obverse side, said lead surface extending partially about said peripheral edge and terminating at said opening to fonn an edge with said transferring surface, and said edge disposed across said recess from said radially extending edge in a transverse disposition therewith.

8. The invention as recited in claim 7 wherein said strand guiding edge terminated in an outwardly projecting distal end which radially extends beyond said edge formed by said lead surface with said transferring surface.

the strand 9. The invention as recited in claim 7 wherein said partition includes a beveled surface sloping from said obverse side to said channel at said peripheral edge and extending therealong to said transferring and intercepting surface, said beveled, intersecting and transferring surface forming a trihedron defining a common end point disposed on said radially extending edge whereat said point lies radially beyond said edge formed by said lead surface with said transferring surface.

10. The invention as recited in claim 7 wherein said channel extending from said recess in substantial parallelism between said obverse and reverse sides and terminating at a distance spaced from said recess and that portion of said reverse side adjacent said channel to form thereat a rear wall defining a continuous rear surface of oneside of said channel and said recess, and said rear wall curving inwardly toward said core to produce an arcuate outwardly disposed and inwardly curving edge terminating substantially at that termination of said channel which is spaced from said recess.

edge to said reverse side in angular orientation therewith, said wiping surface extending in intersecting relation with said relief surface.

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US3461414 *May 13, 1968Aug 12, 1969Western Electric CoInductive coil and method of making the same
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Classifications
U.S. Classification242/118.41, 336/208
International ClassificationH01F5/02, H01F27/32
Cooperative ClassificationH01F5/02, H01F27/325, H01F2005/022
European ClassificationH01F5/02, H01F27/32D1