US3843866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic fillet and butt welding apparatus
Assignee: Individual
•
Filing: 1972-10-02
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Granted: 1974-10-22
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Expires: 1992-10-02
Abstract
Abstract Power propelled apparatus particularly for making fillet and butt welds along a weld joint axis between adjacent surfaces of plate members and other workpieces having converging relation on a plane in right angled relation to the joint axis, in which a power propelled carriage is guidingly supported for movement in parallel relation along the joint axis, and a welding torch carried along the joint axis by the carriage is actuated with a transverse oscillatory movement between the converging surfaces, provision being made to selectively adjust the torch movement to conform substantially to a linear path or a V-path of movement over the converging surfaces in a manner to properly maintain the necessary welding voltage-ampere relationship, the torch oscillating means also being adjustable to select and vary the speed of movement and extent of dwell interval at the sides and mid-points of the weld.
Inventors
- 👤 M Kensrue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:21
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/0209; B23K9/24; B23K9/28; B23K9/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
205 words
Welding apparatus operable to provide a continuous weld along a weld joint axis between adjacent surfaces having converging relation on a plane at a rightangle to the weld joint axis, comprising: a. a power drive carriage structure; b. means supporting said carriage structure for guided movement along said joint axis; c. a welding torch mounted on said carriage structure and being movable therewith along the joint axis including a welding tip; and d. mechanism for oscillating the welding tip in successively reversed paths of movement transversely of the joint axis, while moving said carriage along said joint axis, said mechanism comprising: a guide arm pivoted at one end for swinging movement; a head frame supporting said torch and being slidable in a linear path on said guide arm; a spring normally urging the head frame and torch towards a limit position of movement at the free end of the guide arm; and means operable in response to oscillatory swinging movement of said guide arm and coacting with said spring to vary the position of said head frame on said guide arm in a manner such that the combined oscillatory and linear movement of the head frame will conform the tip oscillating movement to a V-path.
Claim 2
Dependent Claim
205 words
Welding apparatus operable to provide a continuous weld along a weld joint axis between adjacent surfaces having converging relation on a plane at a rightangle to the weld joint axis, comprising: a. a power drive carriage structure; b. means supporting said carriage structure for guided movement along said joint axis; c. a welding torch mounted on said carriage structure and being movable therewith along the joint axis including a welding tip; and d. mechanism for oscillating the welding tip in successively reversed paths of movement transversely of the joint axis, while moving said carriage along said joint axis, said mechanism comprising: a guide arm pivoted at one end for swinging movement; a head frame supporting said torch and being slidable in a linear path on said guide arm; a spring normally urging the head frame and torch towards a limit position of movement at the free end of the guide arm; and means operable in response to oscillatory swinging movement of said guide arm and coacting with said spring to vary the position of said head frame on said guide arm in a manner such that the combined oscillatory and linear movement of the head frame will conform the tip oscillating movement to a V-path.
Claim 3
Dependent Claim
25 words
Welding apparatus according to claim 1, wherein the means coacting with the spring to vary the position of said head frame comprises a rocker cam.
Claim 4
Dependent Claim
24 words
Welding apparatus according to claim 2, including means for varying the cam action to selectively provide V-paths of movement of 60* and 90* respectively.
Claim 5
Dependent Claim
35 words
Welding apparatus according to claim 3, in which the head frame carries a follower plate and the means for varying the cam action comprises selectable pins on the rocker cam for engaging the follower plate.
Claim 6
Dependent Claim
55 words
Welding apparatus according to claim 1, including means for releasably locking said head frame in a fixed position on said guide arm and in which the means coacting with the spring to vary the position of said head frame is rendered ineffective, whereby the tip oscillating movement will be conformed substantially to a linear path.
Claim 7
Dependent Claim
61 words
Welding apparatus according to claim 1, including a driving arm having one end swingably mounted on a fixed pivot, power means for oscillating said driving arm including a connected rotatable eccentric, and an adjustable variable throw connection between said driving arm and said guide arm, whereby the lateral extent of the tip oscillations is variable to provide welds of different widths.
Claim 8
Dependent Claim
37 words
Welding apparatus according to claim 6, including means for selectively effecting a dwell characteristic in the movement of the tip at the sides and axis of the weld joint, and means for varying the dwell time interval.
Claim 9
Dependent Claim
172 words
Welding apparatus operable to provide a continuous weld along a weld joint axis between adjacent surfaces having converging relation on a plane at a rightangle to the weld joint axis, comprising: a. a power driven carriage structure; b. means supporting said carriage structure for guided movement along said joint axis; c. a welding torch mounted on said carriage structure and being movable therewith along the joint axis including a welding tip; and d. mechanism for oscillating the welding tip in successively reversed paths of movement transversely of the joint axis, while moving said carriage along said joint axis, said mechanism comprising: an electric motor having an armature energizing circuit; switching means controlled by the rotation of said motor armature for disconnecting said armature from said energizing circuit and effecting a braking action to stop the motor at a predetermined dwell position in the oscillation movement of the torch tip; and timing means activated by said switching means for reestablishing connection of said armature with said energizing circuit after a predetermined delay interval.
Claim 10
Dependent Claim
172 words
Welding apparatus operable to provide a continuous weld along a weld joint axis between adjacent surfaces having converging relation on a plane at a rightangle to the weld joint axis, comprising: a. a power driven carriage structure; b. means supporting said carriage structure for guided movement along said joint axis; c. a welding torch mounted on said carriage structure and being movable therewith along the joint axis including a welding tip; and d. mechanism for oscillating the welding tip in successively reversed paths of movement transversely of the joint axis, while moving said carriage along said joint axis, said mechanism comprising: an electric motor having an armature energizing circuit; switching means controlled by the rotation of said motor armature for disconnecting said armature from said energizing circuit and effecting a braking action to stop the motor at a predetermined dwell position in the oscillation movement of the torch tip; and timing means activated by said switching means for reestablishing connection of said armature with said energizing circuit after a predetermined delay interval.
Claim 11
Dependent Claim
22 words
Welding apparatus according to claim 8, wherein said switching means and timing means are operable at a plurality of predetermined dwell positions.
Claim 12
Dependent Claim
18 words
Welding apparatus according to claim 8 including means for adjustably varying the delay interval of said timing means.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |