US3908918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doffing means for the package wound on a strand winding machine
Assignee: Individual
•
Filing: 1974-04-18
•
Granted: 1975-09-30
•
Expires: 1994-04-18
Abstract
Abstract An attachment for a strand winding machine for automatically doffing a package wound thereon after first releasing the leading bound end of the package, severing the strand from the supply and then gripping the severed end for the initial winding of a subsequent package with means for sequentially operating the different steps.
Inventors
- 👤 Gunnar A Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:54
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/70; B65H54/71; B65H67/00; B65H67/04; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
216 words
A doffing means for a strand winding machine having a driven package spindle supported at one end and free at the other end, a strand package measuring means for stopping said spindle at a predetermined package size, and a strand traversing frame, that improvement which comprises means for swinging the strand traversing frame from the package spindle, strand cutting means and strand clamping means reciprocably mounted to move parallel to the axis of said spindle and between the frame and the package after the traversing frame is swung away from the package to engage the strand as lead from a supply source to the package spindle, means to operate said cutting and clamping means to cut and clamp the strand, releasable strand clamping means mounted on said spindle to rotate therewith, means to release said rotatable clamping means after stopping of the spindle, a plate adjacent the driven end of the spindle and reciprocably mounted to move parallel to the axis of the spindle and engage the strand package to slide it off the free end of the spindle, means to reciprocate said plate during stopping of the spindle, said rotatable clamping means clamping the leading end of the strand after the reciprocable clamping means retracts and the traversing frame is swung back adjacent the spindle.
Claim 2
Dependent Claim
216 words
A doffing means for a strand winding machine having a driven package spindle supported at one end and free at the other end, a strand package measuring means for stopping said spindle at a predetermined package size, and a strand traversing frame, that improvement which comprises means for swinging the strand traversing frame from the package spindle, strand cutting means and strand clamping means reciprocably mounted to move parallel to the axis of said spindle and between the frame and the package after the traversing frame is swung away from the package to engage the strand as lead from a supply source to the package spindle, means to operate said cutting and clamping means to cut and clamp the strand, releasable strand clamping means mounted on said spindle to rotate therewith, means to release said rotatable clamping means after stopping of the spindle, a plate adjacent the driven end of the spindle and reciprocably mounted to move parallel to the axis of the spindle and engage the strand package to slide it off the free end of the spindle, means to reciprocate said plate during stopping of the spindle, said rotatable clamping means clamping the leading end of the strand after the reciprocable clamping means retracts and the traversing frame is swung back adjacent the spindle.
Claim 3
Dependent Claim
71 words
A doffing means as in claim 1 wherein the rotatable strand clamping means on said spindle comprises a member having recess coaxial with the package spindle, a strand clamp on its outer surface and means extending from said clamp to said recess, said releasable means including a member mounted for movement along the spindle axis into said recess to engage said means extending into said recess to release said strand clamp.
Claim 4
Dependent Claim
31 words
A doffing means as in claim 1 wherein the cutter and clamp are independently and adjustably tensioned, including separate biasing means for independently and adjustably tensioning the reciprocable cutter and clamp.
Claim 5
Dependent Claim
27 words
A doffing means as in claim 1 wherein the means to release the clamping means is reciprocatably mounted to move parallel to the axis of said spindle.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |