US3659795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for individually winding coils with paper separating its successive wire layers
Assignee: BACHI Inc
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Filing: 1970-01-02
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Granted: 1972-05-02
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Expires: 1990-01-02
Abstract
Abstract Paper strips are successively severed from strip stock by a guillotine knife which cuts obliquely across the strip stock with the angle of the cut being alternately towards the right and the left; the strips so severed from the stock are fed to a coil being wound with the foremost corner of the leading edge of the strip at the side edge of the strip which is in line with the end of the coil at which the first convolution of the next wire layer is applied, to be gripped between the then outermost wire layer and the wire forming said first convolution of the next layer and drawn about said existing layer while the trailing portion of the strip is held against edgewise displacement by a spring clip which grasps the strip and travels with the strip and is constrained to straight line linear motion normal to the axis of the coil.
Inventors
- 👤 Robert W Bachi
- 👤 John R Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
B; B65; B65H; B65H55/00; B65H55/04; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/064; H01F41/066; H01F41/068; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4475; Y10T83/4478; Y10T83/727; Y10T83/736
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
282 words
The method of individually winding wire coils with the wire arranged in defined superimposed said layers of contiguous helical convolutiOns, and said layers separated by interposed layers of paper, each of which is formed by wrapping a paper strip that is wide enough to encompass the entire length of the coil and long enough to have its ends overlapped about the then outermost existing wire layer during the winding of the first convolution of the next wire layer, said method being characterized by: A. feeding each paper strip lengthwise to the coil while the coil is rotating on its axis, to cause the leading edge of the strip to be gripped near one side edge thereof between the then outermost existing layer of the coil and the wire being wound thereon to form the next layer as the first convolution of said next layer is being formed whereby the paper strip is drawn onto and wrapped about said existing wire layer with its ends overlapped; B. causing the leading edge of the paper strip across the entire width of the strip to hug said existing layer so that said leading edge tucks itself smoothly under the trailing end portion of the strip as the ends of the strip are overlapped; and C. holding the paper strip against edgewise displacement from a path normal to the axis of the coil as it is drawn onto the coil, by frictionally gripping the strip in a grasp that is drawn along by the strip and is constrained to linear movement along a path normal to the axis of the coil, so that the ends of the resulting paper layer are square with the coil axis.
Claim 2
Independent Claim
282 words
The method of individually winding wire coils with the wire arranged in defined superimposed said layers of contiguous helical convolutiOns, and said layers separated by interposed layers of paper, each of which is formed by wrapping a paper strip that is wide enough to encompass the entire length of the coil and long enough to have its ends overlapped about the then outermost existing wire layer during the winding of the first convolution of the next wire layer, said method being characterized by: A. feeding each paper strip lengthwise to the coil while the coil is rotating on its axis, to cause the leading edge of the strip to be gripped near one side edge thereof between the then outermost existing layer of the coil and the wire being wound thereon to form the next layer as the first convolution of said next layer is being formed whereby the paper strip is drawn onto and wrapped about said existing wire layer with its ends overlapped; B. causing the leading edge of the paper strip across the entire width of the strip to hug said existing layer so that said leading edge tucks itself smoothly under the trailing end portion of the strip as the ends of the strip are overlapped; and C. holding the paper strip against edgewise displacement from a path normal to the axis of the coil as it is drawn onto the coil, by frictionally gripping the strip in a grasp that is drawn along by the strip and is constrained to linear movement along a path normal to the axis of the coil, so that the ends of the resulting paper layer are square with the coil axis.
Claim 3
Dependent Claim
72 words
The method of claim 1, wherein the leading edge of the paper strip is caused to hug the said existing layer of the coil about which the strip is being wrapped, by making said leading edge oblique and having its foremost corner at that side edge of the paper strip at which the strip is initially gripped, so that the leading edge of the strip wraps itself helically about said existing layer.
Claim 4
Dependent Claim
13 words
knife means at the cut-off station for severing strips from the stock, and
Claim 5
Dependent Claim
13 words
knife means at the cut-off station for severing strips from the stock, and
Claim 6
Dependent Claim
13 words
knife means at the cut-off station for severing strips from the stock, and
Claim 7
Dependent Claim
13 words
knife means at the cut-off station for severing strips from the stock, and
Claim 8
Dependent Claim
181 words
feeding means for gripping the strip stock and advancing the same along path to a position projecting a predetermined distance beyond the knife means, and said apparatus being characterized in that said knife means comprises: A. a guillotine knife; B. structure mounting the guillotine knife for up and down movement and for rocking movement about an axis intersecting said path substantially medially of its side edges between defined limits at one of which the guillotine knife extEnds obliquely to the left across said path and in the other of which it extends obliquely to the right across said path; C. power actuated means for rocking the mounting structure for the guillotine knife about said axis alternately to its defined limits; and D. power actuated means for lowering and raising the mounting structure for the guillotine knife when said mounting structure is at its limits of rocking movement, so that succeeding strokes of the guillotine knife impart to the leading edge of the successive strips an oblique disposition with the foremost corner thereof alternately at the opposite side edges of the strips.
Claim 9
Dependent Claim
181 words
feeding means for gripping the strip stock and advancing the same along path to a position projecting a predetermined distance beyond the knife means, and said apparatus being characterized in that said knife means comprises: A. a guillotine knife; B. structure mounting the guillotine knife for up and down movement and for rocking movement about an axis intersecting said path substantially medially of its side edges between defined limits at one of which the guillotine knife extEnds obliquely to the left across said path and in the other of which it extends obliquely to the right across said path; C. power actuated means for rocking the mounting structure for the guillotine knife about said axis alternately to its defined limits; and D. power actuated means for lowering and raising the mounting structure for the guillotine knife when said mounting structure is at its limits of rocking movement, so that succeeding strokes of the guillotine knife impart to the leading edge of the successive strips an oblique disposition with the foremost corner thereof alternately at the opposite side edges of the strips.
Claim 10
Dependent Claim
93 words
feeding means for gripping the strip stock and advancing the same along said path to a position projecting a pre-determined distance beyond the knife means and then advancing the strip severed from the stock to the coil, said apparatus being characterized by: movable guide means having opposed friction pads to grip the opposite faces of each paper strip so that as the strip is advanced to the coil the movable guide means is drawn along with the strip; and means constraining said movable guide means to linear movement parallel to said track means.
Claim 11
Dependent Claim
93 words
feeding means for gripping the strip stock and advancing the same along said path to a position projecting a pre-determined distance beyond the knife means and then advancing the strip severed from the stock to the coil, said apparatus being characterized by: movable guide means having opposed friction pads to grip the opposite faces of each paper strip so that as the strip is advanced to the coil the movable guide means is drawn along with the strip; and means constraining said movable guide means to linear movement parallel to said track means.
Claim 12
Dependent Claim
72 words
The method of claim 1, wherein the leading edge of the paper strip is caused to hug the existing layer of the coil about which the strip is being wrapped, by A. directing a blast of air tangentially against the coil substantially at the point the leading edge of the strip initially contacts the existing layer of the coil; and B. confining said air blast to a circular path encircling the coil.
Claim 13
Dependent Claim
185 words
The method of claim 2, wherein the first convolution of the successive layers of wire are alternately at the opposite ends of the coil, wherein all wire layers are separated from one another by interposed layers of paper and wherein the strips of paper which form said interposed layers are fed to the coil in timed relation to the formation of the succeeding wire layers to have the foremost corner of the leading edge of a strip reach the coil just as the first convolution of each wire layer is begun, and further characterized in that: A. the paper strips are severed from a web of paper of indiscriminate length; and B. severing the web to form the successive strips with the cuts extending obliquely across the web first at one angle and then the other, so that the foremost corners of the leading edges of the successive strips are alternately at opposite side edges of the web and the strips severed therefrom, and always at the side edge adjacent to the end of the coil at which the next successive wire layer is begun.
Claim 14
Dependent Claim
89 words
Apparatus for feeding paper strips successively to a coil of wire as it is being wound with the wire arranged in defined superimposed layers of contiguous helical convolutions, to be interposed between adjacent layers of wire by having the foremost portion of the leading edge of each strip gripped between the then outermost existing wire layer and the wire being wound onto the coil to form its next layer, and by being drawn thereby about said existing wire layer with the ends of the strip over-lapped, said apparatus having
Claim 15
Dependent Claim
89 words
Apparatus for feeding paper strips successively to a coil of wire as it is being wound with the wire arranged in defined superimposed layers of contiguous helical convolutions, to be interposed between adjacent layers of wire by having the foremost portion of the leading edge of each strip gripped between the then outermost existing wire layer and the wire being wound onto the coil to form its next layer, and by being drawn thereby about said existing wire layer with the ends of the strip over-lapped, said apparatus having
Claim 16
Dependent Claim
152 words
The apparatus of claim 5, further characterized by: A. said track means having a longitudinal slot extending from the cut-off station in the direction the strips are advanced, whereby strips on the track means bridge the slot; B. said guide means comprising a U-shaped spring clip which embraces the track means and has complementary friction pads on the ends of its arms in line with said longitudinal slot and yieldingly urged into engagement so as to engage opposite sides of the portion of a paper strip bridging said longitudinal slot, whereby said spring clip is drawn along the track means by the advancing paper strip and by frictional engagement with the track means imposes a drag upon the advance of the paper strip; and C. means on the lower one of the arms of the spring clip guidingly engaging the edges of the longitudinal slot to constrain said clip to linear movement.
Claim 17
Dependent Claim
125 words
The apparatus of claim 6 further characterized by: A. power actuated means for reciprocating the feeding means along the track means between a receiving position upstream of the cut-off station and a delivery position near the delivery end of the track means; B. means providing a lost motion driving connection between the feeding means the spring clip operable to move the spring clip from a position near the delivery end of the track means to a retracted position adjacent to but downstream of the cut-off station; and C. means operable upon the spring clip when the latter is in its retracted position to spread apart its friction pads to enable a paper strip advanced by the feeding means to be inserted between the friction pads.
Claim 18
Dependent Claim
89 words
Apparatus for feeding paper strips successively to a coil of wire as it is being wound with the wire arranged in defined superimposed layers of contiguous helical convolutions, to be interposed between adjacent layers of wire by having the foremost portion of the leading edge of each strip gripped between the then outermost existing wire layer and the wire being wound onto the coil to form its next layer, and by being drawn thereby about said existing wire layer with the ends of the strip overlapped, said apparatus having
Claim 19
Dependent Claim
89 words
Apparatus for feeding paper strips successively to a coil of wire as it is being wound with the wire arranged in defined superimposed layers of contiguous helical convolutions, to be interposed between adjacent layers of wire by having the foremost portion of the leading edge of each strip gripped between the then outermost existing wire layer and the wire being wound onto the coil to form its next layer, and by being drawn thereby about said existing wire layer with the ends of the strip overlapped, said apparatus having
Claim 20
Dependent Claim
76 words
The apparatus of claim 8, wherein the feeding means also advances the strip severed from the stock, and further characterized by: A. drag means operable to frictionally grip each paper strip being advanced to the coil and be drawn thereby along the track means; and B. interengaging guide means on the drag means and the track means to constrain the drag means to linear motion, whereby the drag means holds the paper strip against edgewise displacement.
Claim 21
Dependent Claim
93 words
The apparatus of claim 9, wherein the track means has a longitudinal slot which is bridged by a paper strip being advanced along the track means toward the coil, wherein said drag means comprises a U-shaped spring clip with upper and lower arms transversely embracing the track means and the end portions thereof frictionally gripping the portion of a paper strip which bridges the slot in the track means, and wherein said interengaging guide means comprises abutment means on the lower arm of the spring clip guidingly engaging the edges of said slot.
Claim 22
Dependent Claim
115 words
The apparatus of claim 10, wherein the arms of the paper clip are biased towards one another, said apparatus being further characterized by: A. means for retracting the spring clip from a position to which it has been brought by a paper strip in its grasp to a retracted position adjacent to the cut-off station; and B. means operable in timed relation with the feeding means and with the operation of the guillotine knife for spreading the arms of the spring clip to allow the feeding means to advance the strip stock past the cut-off station and into the space between the arms of the spring clip before the guillotine knife severs the strip stock.
Claim 23
Dependent Claim
57 words
The apparatus of claim 11, further characterized by: means operatively connected with the feeding means for rendering said arm spreading means ineffective until just before the feeding means begins to advance the paper strip just cut from the strip stock, so that throughout the advance of said paper strip, the strip is gripped by the spring clip.
Claim 24
Dependent Claim
179 words
The apparatus of claim 12, wherein said arm spreading means comprises: A. a lever mounted to rock about a fixed horizontal axis between a raised and a lowered position, and having an end portion thereon so located that in the lowered position of the lever said end portion is received between the arms of the spring clip as the latter reaches its retracted position; B. means biasing the lever to its raised position to lift the upper arm of the spring clip when the end portion of the lever is between the arms and said biasing means is unrestrained; C. means operatively connected with the feeding means for restraining said biasing means and holding the lever in its lowered position until the feeding means begins advancing the strip stock, whereby the arms of the spring clip are spread apart during such advance of the strip stock; and D. means operable during descent of the guillotine knife for depressing said lever to thereby free the spring clip for gripping engagement with the paper strip just severed from the strip stock.
Claim 25
Dependent Claim
115 words
The apparatus of claim 13, wherein said means for depressing said lever comprises: A. a plunger freely vertically slidably carried by the structure mounting the guillotine knife, the lower end of The plunger being in line with said lever; B. stop means defining the lowermost position of the plunger and holding the same off said lever when the guillotine knife is in its raised position; and C. a spring reacting between the plunger and the supporting structure for the guillotine knife, yieldingly holding the plunger in its lowermost position, whereby during descent of the guillotine knife the plunger is yieldingly pressed against said lever to hold the same down until the guillotine knife is raised.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |