US3567900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding method and apparatus
Assignee: Battelle Development Corp
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Filing: 1968-08-14
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Granted: 1971-03-02
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Expires: 1988-08-14
Abstract
Abstract A method and apparatus for welding metal members wherein a consumable welding wire having a permanent set imparted thereto is directed into the joint and emerges at a constant predetermined angle toward one of the members. The wire is oscillated about its longitudinal axis during feeding whereby the emerging arcuate portion travels in a predetermined arcuate pattern within the joint.
Inventors
- 👤 Jerome W Nelson
- 👤 Robert E Pollock
- 👤 Robert P Meister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:30
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/24; B23K9/28; B23K9/30; B23K33/00; B23K33/004; B23K9/02; B23K9/0213
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
121 words
In the method of consumable electrode narrow gaP welding wherein a consumable wire welding electrode connected to a source of power is continuously guided through a contact tube and into a narrow gap formed between metal members to deposit metal from said consumable wire electrode in said gap by striking an arc with said metal members, the improvement comprising imparting a permanent set to said consumable wire prior to passing said wire through said contact tube such that the portion of the wire emerging from said contact tube has an arcuate shape determined by said permanent set, and oscillating said wire about its longitudinal axis whereby the emerging arcuate portion of said wire swings from side to side within said gap.
Claim 2
Dependent Claim
121 words
In the method of consumable electrode narrow gaP welding wherein a consumable wire welding electrode connected to a source of power is continuously guided through a contact tube and into a narrow gap formed between metal members to deposit metal from said consumable wire electrode in said gap by striking an arc with said metal members, the improvement comprising imparting a permanent set to said consumable wire prior to passing said wire through said contact tube such that the portion of the wire emerging from said contact tube has an arcuate shape determined by said permanent set, and oscillating said wire about its longitudinal axis whereby the emerging arcuate portion of said wire swings from side to side within said gap.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein said consumable wire electrode has a permanent set imparted thereto to provide a wire coil diameter of about 4 to 10 inches.
Claim 4
Independent Claim
124 words
A method of welding metal members comprising the steps of: a. aligning said metal members to form a gap; b. continuously feeding at least one consumable welding wire from a source of wire through a contact tube, said wire having a permanent set imparted thereto prior to entering the contact tube; c. guiding said wire into said gap with said wire emerging from the contact tube and extending into said gap, the emerging portion of said wire having an arcuate shape determined by said permanent set; d. oscillating said wire about its longitudinal axis whereby said emerging arcuate portion swings from side to side within said gap; and e. melting said emerging arcuate portion of said wire to deposit weld metal in said gap.
Claim 5
Independent Claim
124 words
A method of welding metal members comprising the steps of: a. aligning said metal members to form a gap; b. continuously feeding at least one consumable welding wire from a source of wire through a contact tube, said wire having a permanent set imparted thereto prior to entering the contact tube; c. guiding said wire into said gap with said wire emerging from the contact tube and extending into said gap, the emerging portion of said wire having an arcuate shape determined by said permanent set; d. oscillating said wire about its longitudinal axis whereby said emerging arcuate portion swings from side to side within said gap; and e. melting said emerging arcuate portion of said wire to deposit weld metal in said gap.
Claim 6
Dependent Claim
29 words
A method of welding metal members as in claim 3 wherein said source of wire is a spool having wire wound thereabout, said wire having a permanent predetermined set.
Claim 7
Dependent Claim
29 words
A method of welding metal members as in claim 3 wherein said wire is directed from said source of wire to forming means to impart a permanent set thereto.
Claim 8
Dependent Claim
25 words
The method of claim 5 wherein said wire is directed to forming means comprising drive rolls at an angle determined by the desired permanent set.
Claim 9
Dependent Claim
25 words
The method of claim 5 wherein said wire is directed to forming means comprising forming rolls having a diameter determined by the desired permanent set.
Claim 10
Dependent Claim
28 words
The method of claim 5 wherein said wire is fed 360* about forming means comprising a single forming roll having a diameter determined by the desired permanent set.
Claim 11
Dependent Claim
29 words
A method of welding metal members as in claim 3 wherein said permanent set imparted to said wire provides a wire coil diameter of about 4 to 10 inches.
Claim 12
Dependent Claim
35 words
A method of welding metal members as in claim 3 wherein said wire is connected to a power source to strike an arc between said emerging arcuate portion of said wire and said metal members.
Claim 13
Dependent Claim
36 words
A method of welding metal members as in claim 3 wherein the emerging arcuate portion of said wire is fed directly into a source of intense heat to melt and deposit weld metal in said gap.
Claim 14
Dependent Claim
23 words
The method of claim 11 wherein said source of intense heat is the arc formed between a tungsten electrode and said metal members.
Claim 15
Dependent Claim
97 words
In a consumable electrode welding apparatus having means for feeding a consumable electrode wire through a contact tube and into a gap formed between metal members, the improvement comprising means for imparting a permanent set to said consumable wire prior to passing said wire through said contact tube such that the portion of the wire emerging from said contact tube has an arcuate shape determined by said permanent set and including means for oscillating said consumable wire about its longitudinal axis whereby the emerging arcuate portion of said wire swings from side to side within said gap.
Claim 16
Dependent Claim
97 words
In a consumable electrode welding apparatus having means for feeding a consumable electrode wire through a contact tube and into a gap formed between metal members, the improvement comprising means for imparting a permanent set to said consumable wire prior to passing said wire through said contact tube such that the portion of the wire emerging from said contact tube has an arcuate shape determined by said permanent set and including means for oscillating said consumable wire about its longitudinal axis whereby the emerging arcuate portion of said wire swings from side to side within said gap.
Claim 17
Dependent Claim
43 words
The method of claim 18 wherein said wire is guided into said gap by an idler roll positioned between said contact tube and said source of wire and wherein said wire is oscillated by moving said idler roll with a cam drive means.
Claim 18
Dependent Claim
46 words
The method of claim 3 wherein the contact tube includes an extension thereof at the entrance end of said contact tube, said extension being formed to guide said wire, and wherein said wire is oscillated by moving a portion of said extension from side to side.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |