US3724515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for winding two pole dynamoelectric machine field coils
Assignee: Essex International Inc
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Filing: 1970-12-28
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Granted: 1973-04-03
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Expires: 1990-12-28
Abstract
Abstract A method and apparatus for winding field coils for a two pole dynamoelectric machine stator core member, the field coils comprising first and second pole groups of coils each having a plurality of progressively smaller concentric coils. In accordance with the method, the first pole group of coils is wound, without severing the wire from which the coils are wound, upon the first of two stepped, collapsible coil forms with the first coil form being expanded and at a winding position and the second of the coil forms being at an inactive position. Each of the coil forms has a forward distal end and a rear proximal end mounted on a rotatable turret, the smaller step of each coil form being adjacent its distal end and the largest step being adjacent its proximal end. The winding of the first pole group commences with winding of the smallest coil on the smallest step of the first coil form, progresses rearwardly toward the proximal end, and concludes with winding of the largest coil on the largest step of the first coil form. The turret is then indexed, still without severing the wire, thereby to move the first coil form with the coils wound thereon to the inactive position and to move the second coil form to the winding position. The second pole group of coils is then wound, still without severing the wire, upon the second coil form which is expanded and in its winding position, the winding of the second pole group commencing with the winding of the largest coil on the largest step of the second coil form, progressing forwardly toward the distal end, and concluding with the winding of the smallest coil on the smallest step of the second coil form. Finally, the coil forms are collapsed and the coils are removed therefrom.
Inventors
- 👤 R Eminger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:31
CPC Classifications
H; H02; H02K; H02K15/00; H02K15/04; H02K15/043; H02K15/0431; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/4902; Y10T29/49071; Y10T29/53; Y10T29/5313; Y10T29/53143
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
271 words
Apparatus for winding field coils for a two pole dynamoelectric machine stator core member, said field coils comprising first and second pole groups of coils each having a plurality of progressively smaller concentric coils, said apparatus comprising first and second stepped, collapsible coil forms each having a forward distal end and a rear proximal end which is mounted on a rotatable turret, the smallest step of each coil form being adjacent its distal end and the largest step adjacent its proximal end; a rotatable flyer for winding wire on said coil forms, said flyer when rotated describing a cylindrical path of rotation about an axis; means for rotating said turret thereby sequentially to position said coil forms in winding relationship with said flyer, said axis extending through the one coil form which is in winding position from said distal to said proximal end thereof and said path of rotation surrounding said coil form, said flyer including means for withdrawing wire from a source thereof whereby upon securing a starting end of said wire which extends from said flyer and rotating said flyer said wire is wound on said one coil form to form a respective group of said coils; and means for holding said starting end of said wire at a location adjacent said smallest step of said one coil form in its winding position and within said path of rotation of said flyer whereby the smaLlest coil may initially be wound upon the smallest step of said one coil form and the larger coils of the respective group wound progressively rearwardly toward said proximal end of said one coil form.
Claim 2
Dependent Claim
271 words
Apparatus for winding field coils for a two pole dynamoelectric machine stator core member, said field coils comprising first and second pole groups of coils each having a plurality of progressively smaller concentric coils, said apparatus comprising first and second stepped, collapsible coil forms each having a forward distal end and a rear proximal end which is mounted on a rotatable turret, the smallest step of each coil form being adjacent its distal end and the largest step adjacent its proximal end; a rotatable flyer for winding wire on said coil forms, said flyer when rotated describing a cylindrical path of rotation about an axis; means for rotating said turret thereby sequentially to position said coil forms in winding relationship with said flyer, said axis extending through the one coil form which is in winding position from said distal to said proximal end thereof and said path of rotation surrounding said coil form, said flyer including means for withdrawing wire from a source thereof whereby upon securing a starting end of said wire which extends from said flyer and rotating said flyer said wire is wound on said one coil form to form a respective group of said coils; and means for holding said starting end of said wire at a location adjacent said smallest step of said one coil form in its winding position and within said path of rotation of said flyer whereby the smaLlest coil may initially be wound upon the smallest step of said one coil form and the larger coils of the respective group wound progressively rearwardly toward said proximal end of said one coil form.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 wherein each of said coil forms comprises first and second longitudinally extending parts which are transversely spaced-apart to define a slot, said holding means being positioned in said slot of said one coil form.
Claim 4
Dependent Claim
46 words
The apparatus of claim 2 further comprising means for retracting said holding means in said slot rearwardly toward the proximal end of said one coil form thereby to pull said starting end rearwardly in said slot whereby said larger coils are wound over said starting end.
Claim 5
Dependent Claim
51 words
The apparatus of claim 2 wherein the distal end of said one coil form has means thereon for engaging said starting end of said wire, and means for rotating said flyer in a direction such that said starting end engages said engaging means and is then wound around said smallest step.
Claim 6
Dependent Claim
53 words
The apparatus of claim 1 further comprising second means for holding said starting end at another location rearwardly from said first-named location in a direction toward said proximal end of said one coil form and within said path of rotation of said flyer whereby said larger coils are wound over said starting end.
Claim 7
Dependent Claim
46 words
The apparatus of claim 1 wherein said holding means is selectively movable between an inactive position clear of said path of rotation of said flyer and an active position which establishes said location adjacent the rear end of the smallest step of said one coil form.
Claim 8
Dependent Claim
176 words
The apparatus of claim 6 where said flyer is axially movable between retracted and extended positions thereby to wind said coils on said coil form steps, said retracted and extended positions being respectively axially spaced from and adjacent said proximal end of said one coil form, said flyer being in its retracted position and clear of said holding means in its active position when winding said smallest coil on said one coil form, and further comprising means for securing said starting end at a first point rearwardly of the path of rotation of said flyer in its extended position in a direction toward said proximal end of said one coil form, and means for guiding said starting end from said first point forwardly within the path of rotation of said flyer in a direction toward said distal end of one coil form to said holding means in its active position whereby upon movement of said holding means to its inactive position following winding of said smallest coil the larger coils are wound over said starting end.
Claim 9
Dependent Claim
64 words
The apparatus of claim 7 wherein said guiding means is mounted on said one coil form at a second point adjacent the proximal end thereof and guides said starting end from said first point to said second point and thence forwardly in a direction toward said distal end along the side of said one coil form to said holding means in its active position.
Claim 10
Dependent Claim
76 words
The apparatus of claim 8 wherein each of said coil forms comprises two longitudinally extending parts which are transversely spaced-apart in the expanded position of the coil form to define a slot, said guiding and holding means guiding said starting end of said wire forwardly toward said distal end of said one coil form and holding the same adjacent said slot whereby said wire is pushed into said slot as said larger coils are wound thereover.
Claim 11
Dependent Claim
92 words
The apparatus of claim 9 wherein said guiding means comprises a first rod extending generally transversely with respect to said one coil form; said holding means comprising a second rod which in said active position thereof extends laterally into said slot, and means for selectively extending said second rod to said active position and retracting the same to said inactive position; and further comprising means for rotating said flyer in a direction such that said starting end of said wire is carried over said second rod and thence around said smallest step.
Claim 12
Dependent Claim
126 words
The apparatus of claim 10 wherein each of said coil forms is pivotally mounted on said turret for movement between a first unloading position in which said coil forms extend vertically downwardly with respect to said axis and are parallel and closely adjacent, and a second longitudinally extending position, each of said coil forms being in its second position when in its winding position, said first rod extending longitudinally forwardly toward said flyer when said one coil form is in its first position with said starting enc extending directly from said flyer over said first rod to said first point, movement of said one coil form to said second position thereof causing said first rod to engage said starting end thereof to define said second point.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |