US3687171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive shaft for a wave-type loom
Assignee: Ruti Machinery Works Ltd
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Filing: 1970-03-09
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Granted: 1972-08-29
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Expires: 1990-03-09
Abstract
Abstract A drive shaft for use on a wave-type loom which is adapted to swing reed teeth that are arranged side by side along a pivot shaft parallel to the drive shaft and which has a helical exterior or profile against which the reed teeth bear so that the teeth are swung about the pivotal shaft when the drive shaft rotates, the drive shaft comprising an inner core of constant cross-section extending over its length and a plurality of elements which surround the core. The elements are arranged in a row in the longitudinal direction of the core and bear against each other. Also, the elements are rotationally connected to the core so that they will rotate with the core.
Inventors
- 👤 Edgar H Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:38
CPC Classifications
D; D03; D03D; D03D47/00; D03D47/12; D03D47/26; D03D47/262; D03D47/263
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
197 words
A drive shaft for use on a wave-type loom adapted to drive reed teeth individually, which are arranged side by side along a pivot shaft which is parallel with the drive shaft, said drive shaft having a helical continuous exterior forming helically shaped continuous high and low portions against which the reed teeth bear, the teeth being swung about the pivot shaft when said drive shaft rotates, said drive shaft comprising an inner core of constant cross-section extending over the width of the loom, a plurality of cylinder-like elements having a hollow inner section extending in the axial direction, said elements being arranged in their axial direction in a row and longitudinally over said core, thereby surrounding said core and having their end faces bearing against each other, thus forming said high and low portions, said elements being rotationally connected to the inner core, so that the core and the cylinder-like elements will rotate together, each of said elements being provided with a section of said helical continuous exterior and including a high portion and a low portion therein that extends lengthwise and circumferentially of said element to form said helically shaped continuous high and low portions.
Claim 2
Dependent Claim
197 words
A drive shaft for use on a wave-type loom adapted to drive reed teeth individually, which are arranged side by side along a pivot shaft which is parallel with the drive shaft, said drive shaft having a helical continuous exterior forming helically shaped continuous high and low portions against which the reed teeth bear, the teeth being swung about the pivot shaft when said drive shaft rotates, said drive shaft comprising an inner core of constant cross-section extending over the width of the loom, a plurality of cylinder-like elements having a hollow inner section extending in the axial direction, said elements being arranged in their axial direction in a row and longitudinally over said core, thereby surrounding said core and having their end faces bearing against each other, thus forming said high and low portions, said elements being rotationally connected to the inner core, so that the core and the cylinder-like elements will rotate together, each of said elements being provided with a section of said helical continuous exterior and including a high portion and a low portion therein that extends lengthwise and circumferentially of said element to form said helically shaped continuous high and low portions.
Claim 3
Dependent Claim
25 words
The drive shaft of claim 1 in which the elements are slidable in the longitudinal direction of the inner core and can be individually replaced.
Claim 4
Dependent Claim
60 words
The drive shaft of claim 2 in which the inner core is of quadratic cross-section and the elements contain straight-through openings extending in their longitudinal direction, which openings are likewise of quadratic cross-section, and the cross-section of the core is minimally smaller than the cross-section of the openings in the elementS, so that the elements fit snugly on the core.
Claim 5
Dependent Claim
56 words
The drive shaft of claim 2 in which the elements are held at each end of the core by a securing means, and a resilient member is provided between at least one of the securing means and the elements so as to set up a biasing action whereby the elements are continuously pressed against each other.
Claim 6
Dependent Claim
50 words
The drive shaft of claim 1 in which the inner core is made of a material of great mechanical strength and the elements are made of a material which has a relatively small friction on the reed teeth and by which the reed teeth are subjected to relatively little wear.
Claim 7
Dependent Claim
18 words
The drive shaft of claim 1 in which the elements are made from a material containing polymethylene oxide.
Claim 8
Dependent Claim
47 words
The drive shaft of claim 1 in which the length of each of the individual elements is equal to the distance between two helical raised portions of the helical exterior of the drive shaft, said distance being a whole-number multiple of the pitch of the helical portions.
Claim 9
Dependent Claim
48 words
The drive shaft of claim 1 in which when the reed teeth are positioned at right-angles to the drive shaft and bear via their narrow sides on the drive shaft, the end-faces of the elements are disposed in planes inclined to the longitudinal axis of the drive shaft.
Claim 10
Dependent Claim
43 words
The drive shaft of claim 8 in which the tangent at the outer limits of the end-faces of the elements at the points on a raised edge of the exterior of the drive shaft are inclined to the axis of the drive shaft.
Claim 11
Dependent Claim
32 words
The drive shaft of claim 8 in which an angle of between 60* and 80* is formed between the axis of the drive shaft and each of the planes inclined relatively thereto.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |