US3794267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling the tension of yarn, wire, cord or the like
Assignee: W H K PROD Ltd
•
Filing: 1972-09-11
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Granted: 1974-02-26
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Expires: 1992-09-11
Abstract
Abstract An apparatus for controlling the tension of yarn, wire, cord or similar elongate material being withdrawn from or taken up on to a package. A spindle is mounted for rotation about its longitudinal axis and is also rotatable about a pivot at right angles to the longitudinal axis of the spindle in dependence on the weight of the package. Brake means are operable to apply a braking force to the spindle and a lever is movable in accordance with movement of the spindle about its pivot to control the braking force. A fulcrum bears on the lever. The position of the fulcrum is adjustable lengthwise of the lever. Means are provided for applying an adjustable pressure loading on the spindle to bias movement of the spindle about its pivot.
Inventors
- 👤 W Kimpton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:28
CPC Classifications
B; B65; B65H; B65H59/00; B65H59/02; B65H59/04; B65H59/043; B65H59/046; G; G01; G01L; G01L5/00; G01L5/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
An apparatus for controlling variation in the tension of wire, yarn or other material being withdrawn from or taken up on to a rotating package comprising a spindle mounted for rotation about its longitudinal axis and also rotatable about a pivot at right angles to the longitudinal axis of the spindle in dependence on the weight of the package, brake means operable to apply a braking force to the spindle, a lever movable in accordance with movement of the spindle about its pivot to control the said braking force, a fulcrum bearing on the lever, means for adjusting the position of the fulcrum lengthwise of the lever, and means for applying an adjustable pressure loading on the spindle to bias movemeNt of the spindle about its pivot.
Claim 2
Independent Claim
127 words
An apparatus for controlling variation in the tension of wire, yarn or other material being withdrawn from or taken up on to a rotating package comprising a spindle mounted for rotation about its longitudinal axis and also rotatable about a pivot at right angles to the longitudinal axis of the spindle in dependence on the weight of the package, brake means operable to apply a braking force to the spindle, a lever movable in accordance with movement of the spindle about its pivot to control the said braking force, a fulcrum bearing on the lever, means for adjusting the position of the fulcrum lengthwise of the lever, and means for applying an adjustable pressure loading on the spindle to bias movemeNt of the spindle about its pivot.
Claim 3
Dependent Claim
112 words
An apparatus as claimed in claim 1 and including a bearing housing rotatable about said pivot at right angles to the longitudinal axis of the spindle, the said spindle extending through the housing and projecting from each end thereof; said brake control lever being carried pivotally from the bearing housing; said brake means including a brake pulley on one end of the spindle and a brake pad bearing on said brake pulley and connected with the brake control lever so that the braking force applied to the brake pulley is dependent on the pivotal movement of the brake control lever; and said fulcrum including a roller bearing on the brake control lever.
Claim 4
Dependent Claim
52 words
An apparatus as claimed in claim 2, wherein said means for adjusting the position of the fulcrum roller includes a support bar mounting said roller and a screw threaded shaft connected to said bar whereby rotation of the shaft adjusts the position of the fulcrum roller lengthwise of the brake control lever.
Claim 5
Dependent Claim
54 words
An apparatus as claimed in claim 3, wherein said means for applying an adjustable pressure loading on the spindle includes a spring bearing on the bearing housing between the package and the pivot of the housing to bias movement of the spindle about its pivot, and means for adjusting the loading of the spring.
References Cited (Backward Citations)
US1187978A
Cited
US2417252A
Cited
US2670522A
Cited
US2877963A
Cited
US3540675A
Cited
US3575267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |