US3859495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged-arc welding machine
Assignee: JFE Engineering Corp
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Filing: 1973-04-26
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Granted: 1975-01-07
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Expires: 1993-04-26
Abstract
Abstract A submerged-arc welding machine comprises a welding head pivoted to a frame of the machine so as to be rockable across the seam of a workpiece being welded, and a vertically movable oscillation mechanism provided with an eccentric cam engaging the welding head for causing the welding head to rock across the seam as the cam rotates. Further included is an oscillation amplitude adjusting device for moving the oscillation mechanism as well as the cam vertically, whereby the axis of rotation of the cam is adjustable relative to that point on the frame about which the welding head pivots to adjust the amplitude of the rockable movement of the welding head.
Inventors
- 👤 Nobuhiro Takahashi
- 👤 Tatsuo Ide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:37
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/025; B23K9/0253; B23K9/24; B23K9/28; B23K9/30; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18288
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
220 words
A submerged-arc welding maChine including: a frame; at least one oscillatory welding head pivoted to said frame so as to be rockable across the seam of a workpiece being welded, said welding head being made of electrically conductive material and supplied with a welding wire; an oscillatory mechanism comprising eccentric cam engaging one side wall of said welding head so as to rock said welding head across said seam of said workpiece, a shaft extending lengthwise of said welding machine and supporting said eccentric cam for rotation, and a vertically movable bearing member rotatably supporting said shaft; and an oscillatory amplitude adjusting device comprising a threaded shaft vertically penetrating said frame so as to rotate about the axis of said threaded shaft but to be prevented from being moved in the axial direction thereof, and a bearing mount having a cooperatively threaded bore engaged with said threaded shaft and supporting said bearing member being restrained against rotation about said threaded shaft while being free to move axially along the length of said threaded shaft, whereby the position of said bearing member and thereby the axis of rotation of said cam are adjustable relative to the point on said frame about which said welding head pivots to adjust the amplitude of said welding head rocking across said seam of said workpiece.
Claim 2
Dependent Claim
220 words
A submerged-arc welding maChine including: a frame; at least one oscillatory welding head pivoted to said frame so as to be rockable across the seam of a workpiece being welded, said welding head being made of electrically conductive material and supplied with a welding wire; an oscillatory mechanism comprising eccentric cam engaging one side wall of said welding head so as to rock said welding head across said seam of said workpiece, a shaft extending lengthwise of said welding machine and supporting said eccentric cam for rotation, and a vertically movable bearing member rotatably supporting said shaft; and an oscillatory amplitude adjusting device comprising a threaded shaft vertically penetrating said frame so as to rotate about the axis of said threaded shaft but to be prevented from being moved in the axial direction thereof, and a bearing mount having a cooperatively threaded bore engaged with said threaded shaft and supporting said bearing member being restrained against rotation about said threaded shaft while being free to move axially along the length of said threaded shaft, whereby the position of said bearing member and thereby the axis of rotation of said cam are adjustable relative to the point on said frame about which said welding head pivots to adjust the amplitude of said welding head rocking across said seam of said workpiece.
Claim 3
Dependent Claim
136 words
amended) The welding machine according to claim 1 wherein said welding head includes a main body and is pivotally mounted on said frame by means comprising another shaft extending from said main body lengthwise of said welding machine and provided with a smaller diameter section and a larger diameter section in the order as viewed from said main body; a sleeve into which said smaller diameter section is inserted; a bearing member made of electrically nonconductive material, into which said sleeve is inserted and which is fixed to said frame to hold said welding head so as to rock said welding head about said another shaft; a ring member into which said larger diameter section is inserted and which is supplied with electric power; and a spring means for pressing said ring member to said sleeve.
Claim 4
Dependent Claim
43 words
3. The welding machine according to claim 2 wherein there is provided at least one additional welding head carried by said frame, the lower end of which is inclined downward toward said oscillatory welding head and which is supplied with a welding wire.
References Cited (Backward Citations)
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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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |