US3582599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal welding tool
Assignee: McKenzie-Ris Mfg Corp
•
Filing: 1968-07-29
•
Granted: 1971-06-01
•
Expires: 1988-07-29
Abstract
Abstract A welding head construction for use with typical traveling head automatic welding equipment to form submerged or shielded arc welds internally in confined spaces too small to receive the usual welding head of the equipment and where the welding operation and its progress cannot be observed visually. The internal welding head is provided with forming rolls which impart a curve to the weld wire or rod fed to the submerged weld-arc location. The internal welding head in order to enter a confined space extends parallel with and very close to the weld to be formed, and the weld rod and shielding material feed means likewise extend parallel to the weld to be formed. The curved forming of the weld rod enables the weld rod to be fed to the weld-arc location substantially perpendicularly.
Inventors
- 👤 Melvin G Yohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:42
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/133; B23K9/1336; B23K9/18; B23K9/186
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
257 words
An internal welding tool for use on automatic welding equipment, including elongated generally tubular wand means having a connector end and a nozzle head end; the wand means including a current-conductive weld rod delivery tube member extending between the connector and nozzle head ends of said wand means, insulation means surrounding the delivery tube member, and flux supply means assembled to the delivery tube member; coupling means at the wand connector end for connecting the flux supply means and weld rod delivery tube to a traveling carriage of automatic welding equipment; split member electrode nozzle head means mounted at the nozzle head end on the wand means, said nozzle head means being connected to said delivery tube member; support and guide means mounted on the nozzle head means; shaft joUrnaled forming roll means mounted within the nozzle head means and communicating with said delivery tube for imparting a bend to a weld rod moved and delivered to said roll means through said delivery tube; and a nozzle tip having and enlarged throat mounted on said nozzle head and projecting at an angle substantially differing from 90* with respect to said delivery tube from said nozzle head, said forming roll means importing sufficient bend to said weld rod that its angular disposition upon exiting from said nozzle tip is substantially vertical with respect to said tubular wand means, whereby a weld rod reformed to curved shape by said forming roll means is delivered through said nozzle tip to the weld area of an arc weld to be formed.
Claim 2
Dependent Claim
257 words
An internal welding tool for use on automatic welding equipment, including elongated generally tubular wand means having a connector end and a nozzle head end; the wand means including a current-conductive weld rod delivery tube member extending between the connector and nozzle head ends of said wand means, insulation means surrounding the delivery tube member, and flux supply means assembled to the delivery tube member; coupling means at the wand connector end for connecting the flux supply means and weld rod delivery tube to a traveling carriage of automatic welding equipment; split member electrode nozzle head means mounted at the nozzle head end on the wand means, said nozzle head means being connected to said delivery tube member; support and guide means mounted on the nozzle head means; shaft joUrnaled forming roll means mounted within the nozzle head means and communicating with said delivery tube for imparting a bend to a weld rod moved and delivered to said roll means through said delivery tube; and a nozzle tip having and enlarged throat mounted on said nozzle head and projecting at an angle substantially differing from 90* with respect to said delivery tube from said nozzle head, said forming roll means importing sufficient bend to said weld rod that its angular disposition upon exiting from said nozzle tip is substantially vertical with respect to said tubular wand means, whereby a weld rod reformed to curved shape by said forming roll means is delivered through said nozzle tip to the weld area of an arc weld to be formed.
Claim 3
Dependent Claim
68 words
The construction defined in claim 1 in which the wand means includes a tubular current-conductive support member in which the delivery tube member is telescoped and mounted, in which the insulation means surrounds the support member, in which the flux supply means is carried by the support member, and in which the nozzle head means and contained roll means are mounted on and connected to the support member.
Claim 4
Dependent Claim
92 words
The construction defined in claim 1 in which the nozzle head means includes a tubular shank into which the nozzle head end of the delivery tube member extends, in which a wear bushing is mounted in said tubular shank adjacent the nozzle head end of said delivery tube member, in which the nozzle head is formed with a cavitylike passageway extending between said wear bushing and the angularly arranged nozzle tip, and in which said forming roll means are journaled on lateral shafts mounted within the nozzle head means along said passageway.
Claim 5
Dependent Claim
29 words
The construction defined in claim 3 in which said forming roll means comprises a series of grooved rollers having their grooves aligned with the passageway in said nozzle head.
Claim 6
Dependent Claim
25 words
The construction defined in claim 1 in which the support and guide means includes an insulation material bracket through which the flux supply means passes.
Claim 7
Dependent Claim
25 words
The construction defined in claim 1 in which the support and guide means includes an insulation material bracket, and a roll mounted on said bracket.
Claim 8
Dependent Claim
49 words
The construction defined in claim 6 in which said bracket-mounted roll has edges beveled at 45*, whereby a fillet weld may be formed between wall surfaces oriented at 45* with respect to the horizontal by guiding the tool with the beveled roll edges engaged with the 45* oriented surfaces.
Claim 9
Dependent Claim
41 words
The construction defined in claim 6 including guide track means removably assembled with said wand means formed with a guide slot having slot surfaces engaged by the insulation material bracket for guiding said nozzle tip during movement of the wand means.
References Cited (Backward Citations)
US2260260A
Cited
US2289938A
Cited
US2444834A
Cited
US2786933A
Cited
US2881305A
Cited
US3009048A
Cited
US3060307A
Cited
US3209119A
Cited
US3424887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |