US3581050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc-welding systems
Assignee: NAT RES DEV
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Filing: 1968-07-29
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Granted: 1971-05-25
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Expires: 1988-07-29
Abstract
Abstract Different preselected combinations of the values of welding parameters in a consumable electrode arc-welding process are obtained when a selector switch is moved through its different positions. The switch is inserted into the hub of the reel of electrode wire which is to be fed to the welding torch. The reels are coded so that the switch is moved to a position which will select a combination of values appropriate for the wire carried by that reel.
Inventors
- 👤 Kenneth William Brown
- 👤 Nigel C Balchin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:54
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/10; B23K9/1006; B23K9/1012; B23K9/1018; B23K9/16; B23K9/173
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
211 words
A consumable electrode, electric arc, welding system comprising; a. a welding torch; b. a supply of consumable electrode wire; c. a carrier for said supply of electrode wire; d. a mounting assembly for holding said carrier; e. drive means for feeding said electrode wire to said welding torch; f. control means for varying the speed at which said electrode wire is fed to said torch; g. a power supply for said welding torch; h. means for varying the power fed to said torch; i. a plurality of actuators connected to said speed control means and said power-varying means; j. a voltage source for energizing said actuators, different combinations of wire feed speed and power being selected by energization of predetermined actuators connected to said speed control means and power-varying means respectively; k. a selector unit including a plurality of electrical linking circuits for linking different combinations of said actuators; 1. a key switch connected between said voltage source and said selector unit, each position of said key switch connecting said voltage source to one of said linking circuits and m. means for turning said key switch to a position at which correct values of the wire feed speed and power are selected in accordance with said electrode wire on said carrier.
Claim 2
Dependent Claim
211 words
A consumable electrode, electric arc, welding system comprising; a. a welding torch; b. a supply of consumable electrode wire; c. a carrier for said supply of electrode wire; d. a mounting assembly for holding said carrier; e. drive means for feeding said electrode wire to said welding torch; f. control means for varying the speed at which said electrode wire is fed to said torch; g. a power supply for said welding torch; h. means for varying the power fed to said torch; i. a plurality of actuators connected to said speed control means and said power-varying means; j. a voltage source for energizing said actuators, different combinations of wire feed speed and power being selected by energization of predetermined actuators connected to said speed control means and power-varying means respectively; k. a selector unit including a plurality of electrical linking circuits for linking different combinations of said actuators; 1. a key switch connected between said voltage source and said selector unit, each position of said key switch connecting said voltage source to one of said linking circuits and m. means for turning said key switch to a position at which correct values of the wire feed speed and power are selected in accordance with said electrode wire on said carrier.
Claim 3
Dependent Claim
51 words
Apparatus according to claim 1 further comprising a plurality of carriers for different electrode wires and means responsive to the assembling of a carrier on to said mounting assembly for automatically moving said key switch to select a combination of said values appropriate to the electrode wire on said assembled carrier.
Claim 4
Dependent Claim
65 words
Apparatus according to claim 2 further comprising a manually operable selector switch connected between said key switch and said selector unit such that said voltage source is connected to different input connections of the linking circuit selected from said key switch and said values of wire feed speed and power are thereby further modified to permit welding of different thicknesses of a given job material.
Claim 5
Dependent Claim
116 words
Apparatus according to claim 1, in which said wire carrier includes a codes disc portion and a rotatably mounted central hub portion for housing said key switch, one end of said key switch including a boss mounted on a spindle, and said coding disc including means for forming a driving connection between said coded disc and said switch such that the position of said key switch is fixed with respect to said disc, and in which said mounting assembly includes a protruding pin and said coded disc includes a corresponding socket for said pin whereby to mount said carrier on said mounting assembly the key switch must be rotated until said pin mates with said socket.
Claim 6
Dependent Claim
46 words
Apparatus according to claim 1, in which said means for varying the power fed to said welding torch comprises tappings on a mains transformer supplying power to said welding torch, the said tappings being selected in response to the energization of preselected ones of said actuators.
Claim 7
Dependent Claim
38 words
Apparatus according to claim 1, in which different shielding gas supplies are supplied to said welding torch through control valves, said control valves being opened or closed in response to the energization of preselected ones of said actuators.
Claim 8
Dependent Claim
40 words
Apparatus according to claim 1, further comprising an inductance connected between said power supply and said welding torch, the inductance including a number of tappings, said tappings being selected in response to the energization of preselected ones of said actuators.
Claim 9
Dependent Claim
54 words
Apparatus according to claim 1, in which said drive means for feeding the supply of consumable electrode to said welding torch includes a drive wheel driven from a motor, said means for varying the wire feed speed comprising a servo-operated control for said motor in response to energization of preselected ones of said actuators.
Claim 10
Dependent Claim
85 words
Apparatus according to claim 8, including a magnetic transducer and rate meter for producing a current proportional to the speed of a toothed wheel connected to said motor, said selector unit feeding a current proportional to the required speed in response to the energization of preselected ones of said actuators, and an error amplifier and thyristor-firing circuit altering the firing angle of a thyristor regulator such that said motor speed is altered to balance the two currents and the motor runs at the desired speed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |