US3783597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thread-twisting apparatus with dual thread guide
Assignee: Hamel GmbH
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Filing: 1972-06-19
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Granted: 1974-01-08
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Expires: 1992-06-19
Abstract
Abstract A thread-twisting apparatus has a hollow stem through which the threads to be twisted together are drawn axially. A pair of axially spaced thread brakes are provided in the stem, and a hub carrying a thread guide is rotationally mounted on the stem. This guide is a bent wire having a C-shaped central portion embracing the hub and formed with an inwardly directed finger engaging in a radially open hole in the hub for rotational coupling of the hub and guide. A rotation brake acts on the hub and the adjustment for this brake and for one of the thread brakes can be carried out in a single operation whereby both braking effects are either increased or decreased simultaneously.
Inventors
- 👤 A Greive
- 👤 A Treus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:15
CPC Classifications
D; D01; D01H; D01H13/00; D01H13/10; D01H13/104; D01H13/106
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
71 words
A guiding and braking arrangement for a thread-twisting apparatus comprising: an axially elongated hollow stem; a pair of axially spaced thread brakes in said stem; a hub rotatably mounted on said stem; a thread guide removably mounted on and rotationally fixed to said hub; and means for braking rotation of said hub relative to said stem, said guide being a bent wire having a C-shaped central portion snugly embracing said hub.
Claim 2
Dependent Claim
71 words
A guiding and braking arrangement for a thread-twisting apparatus comprising: an axially elongated hollow stem; a pair of axially spaced thread brakes in said stem; a hub rotatably mounted on said stem; a thread guide removably mounted on and rotationally fixed to said hub; and means for braking rotation of said hub relative to said stem, said guide being a bent wire having a C-shaped central portion snugly embracing said hub.
Claim 3
Dependent Claim
33 words
The arrangement defined in claim 1 wherein said hub is formed with a radially open hole, said guide being provided in said portion with a radially inwardly extending projection receivable in said hole.
Claim 4
Dependent Claim
23 words
The arrangement defined in claim 2 wherein said guide has a pair of substantially diametrically opposIte arms each provided with a thread-receiving eye.
Claim 5
Dependent Claim
24 words
The arrangement defined in claim 1, further comprising means interconnecting one of said thread brakes with said braking means for simultaneous adjustment of both.
Claim 6
Dependent Claim
28 words
The arrangement defined in claim 4 wherein said one of said thread brake comprises a pair of axially open conical seats and a compressible body engaged there between.
Claim 7
Dependent Claim
19 words
The arrangement defined in claim 5 wherein said braking means includes a first spring bearing axially against said hub.
Claim 8
Dependent Claim
164 words
The arrangement defined in claim 6 wherein said means interconnecting said one brake to said braking means includes: an axially elongated tube in said stem carrying an abutment, and provided at one end with one of said seats of said one brake, said first spring bearing against said abutment and against said hub; a nut threaded into said stem and formed with a central hole, said tube passing through said central hole; means rotationally coupling said tube to said nut for rotation and axial displacement of said nut relative to said stem on rotation of said tube; a second spring braced between said nut and said one seat whereby axial displacement of said nut changes the pressure exerted by said one seat on said body and thereby axially displaces said tube; and means for permitting rotation of said tube relative to said stem in a first axial position of said tube and for pre-venting rotation therebetween in a second axial position of said tube.
Claim 9
Dependent Claim
33 words
The arrangement defined in claim 7 wherein said hub has one end turned toward said one seat and an end turned away there-from, said first spring bearing against said end turned away therefrom.
Claim 10
Dependent Claim
93 words
A guiding and braking arrangement for a thread-twisting apparatus comprising: an axially elongated hollow stem; a pair of axially spaced thread brakes in said stem; a hub rotatably mounted on said stem; a thread guide removably mounted on and rotationally fixed to said hub; means for braking rotation of said hub relative to said stem; and means interconnecting one of said thread brakes with said braking means for simultaneous adjustment of both, said one of said thread brakes comprising a pair of axially open conical seats and a compressible body engaged there between.
Claim 11
Dependent Claim
93 words
A guiding and braking arrangement for a thread-twisting apparatus comprising: an axially elongated hollow stem; a pair of axially spaced thread brakes in said stem; a hub rotatably mounted on said stem; a thread guide removably mounted on and rotationally fixed to said hub; means for braking rotation of said hub relative to said stem; and means interconnecting one of said thread brakes with said braking means for simultaneous adjustment of both, said one of said thread brakes comprising a pair of axially open conical seats and a compressible body engaged there between.
Claim 12
Dependent Claim
19 words
The arrangement defined in claim 9 wherein said braking means includes a first spring bearing axially against said hub.
Claim 13
Dependent Claim
164 words
The arrangement defined in claim 10 wherein said means interconnecting said one brake to said braking means includes: an axially elongated tube in said stem carrying an abutment, and provided at one end with one of said seats of said one brake, said first spring bearing against said abutment and against said hub; a nut threaded into said stem and formed with a central hole, said tube passing through said central hole; means rotationally coupling said tube to said nut for rotation and axial displacement of said nut relative to said stem on rotation of said tube; a second spring braced between said nut and said one seat whereby axial displacement of said nut changes the pressure exerted by said one seat on said body and thereby axially displaces said tube; and means for permitting rotation of said tube relative to said stem in a first axial position of said tube and for pre-venting rotation therebetween in a second axial position of said tube.
Claim 14
Dependent Claim
33 words
The arrangement defined in claim 11 wherein said hub has one end turned toward said one seat and an end turned away therefrom, said first spring bearing against said end turned away therefrom.
Claim 15
Dependent Claim
111 words
The arrangement defined in claim 12 for a double-spool two-thread twisting machine, wherein said means rotationally coupling said tube to said nut and said means for permitting rotation and for preventing rotation of said tube both include axially extending interfitting formations on said tube, nut and stem, said guide being unitarily bent from a single wire with a spreadable C-shaped central protioN, a pair of arms extending outwardly from said central portion, and a pair of guide eyes bent into the ends of said arms, said hub having a portion of noncircular cross-section releasably engageable by said central portion of said wire for rotational coupling of said wire to said hub.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |