US3572058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for feeding elastic yarn into a stitch-through type machine
Assignee: Individual
•
Filing: 1969-03-12
•
Granted: 1971-03-23
•
Expires: 1989-03-12
Abstract
Abstract A device, which can be in the form of an attachment to a stitchthrough fabric-making machine, such as a Malimo machine. The attachment is particularly useful for laying in elastic weft threads to be stitched in by warp threads into the fabric and takes a drive from the main machine drive to turn a drum or drums which receive weft or filling threads, such as elastic threads, from a beam or creels they drive. The rotation of the drum, while continuously in one direction, is at varying rates so that the elastic filling threads are fed to the machine carriage at the rate the carriage moves, which prevents stretching of the filling threads and produces a smooth, uniform fabric. The device can be in the form of an attachment to an already existing machine or, of course, can be built into a new machine.
Inventors
- 👤 Albert J Richards
- 👤 Fred E Bower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:16
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
In a stitch-through-type fabric-making machine having a drive, weft-laying carriage, and means for moving the carriage in simple harmonic oscillatory motion from the drive, the improvement which comprises: a. means for driving a drive system synchronously from the drive at the rate of one revolution per carriage reciprocation cycle; b. means for driving the drive system comprising varying ratio drive elements and an output shaft, the ratio variation being such that said shaft turns at a varying rate proportional to speed of carriage movement at various portions of its oscillation; c. at least one weft thread supply and at least one drum in driving contact therewith to receive weft threads therefrom; d. said drum being driven from the output shaft of the varying ratio drive at a rate so the drum periphery moves at a speed corresponding to that of the carriage at all portions of its reciprocation; and e. means for feeding weft threads from drum periphery to the carriage.
Claim 2
Dependent Claim
161 words
In a stitch-through-type fabric-making machine having a drive, weft-laying carriage, and means for moving the carriage in simple harmonic oscillatory motion from the drive, the improvement which comprises: a. means for driving a drive system synchronously from the drive at the rate of one revolution per carriage reciprocation cycle; b. means for driving the drive system comprising varying ratio drive elements and an output shaft, the ratio variation being such that said shaft turns at a varying rate proportional to speed of carriage movement at various portions of its oscillation; c. at least one weft thread supply and at least one drum in driving contact therewith to receive weft threads therefrom; d. said drum being driven from the output shaft of the varying ratio drive at a rate so the drum periphery moves at a speed corresponding to that of the carriage at all portions of its reciprocation; and e. means for feeding weft threads from drum periphery to the carriage.
Claim 3
Dependent Claim
24 words
A machine according to claim 1 in which the weft thread supply is a beam carrying the weft threads wound thereon side by side.
Claim 4
Dependent Claim
30 words
A machine according to claim 1 in which the varying ratio drive consists of an elliptical gear and an eccentric circular gear in mesh, the latter driving the output shaft.
Claim 5
Dependent Claim
30 words
A machine according to claim 2 in which the varying ratio drive consists of an elliptical gear and an eccentric circular gear in mesh, the latter driving the output shaft.
Claim 6
Dependent Claim
67 words
A machine according to claim 3 in which the carriage motion is effected by a large gear synchronously driven by main drive, near the periphery of the large gear a block pinned thereto and slidable on a movable rod whereby as the gear rotates the block slides and the rod moves up and down in simple harmonic motion, and drive means connecting the roD to the carriage.
Claim 7
Dependent Claim
37 words
A machine according to claim 5 in which the output shaft from the varying ratio drives drives sprockets and chains in a plane parallel to the drum axis and the drum drive includes a right angled drive.
Claim 8
Dependent Claim
24 words
A machine according to claim 5 in which the block is connected by a rigid arm to a shaft which turns the elliptical gear.
References Cited (Backward Citations)
US2441189A
Cited
US3440840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |