Method and apparatus for manufacturing a lamp
First Claim
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1. A method for manufacturing a lamp, comprising the steps of:
- preparing a lamp assembly so as to have a bulb coupled to a base and having external lead-in wires, the base having an edge which mates with said bulb, one of the lead-in wires having an outer end which is drawn out between the bulb and the edge of the base;
applying a potential between a welding electrode of a welding device and a tip of said outer end of the external lead-in wire; and
during said potential applying step, interposing a gas flame between the outer end of the external lead-in wire and said welding electrode.
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Abstract
A method and apparatus for manufacturing a lamp involves preparing a lamp assembly having a base to which is coupled a bulb with external lead-in wires. One of the lead-in wires has an outer end which is drawn out between the bulb and the edge of the base. A potential is applied between a welding electrode of a welding device and the tip of the outer end of the external lead-in wire to weld the lead-in wire to the base. During this applying of potential, a gas flame is interposed between the outer end of the external lead-in wire and the welding electrode.
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Citations
13 Claims
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1. A method for manufacturing a lamp, comprising the steps of:
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preparing a lamp assembly so as to have a bulb coupled to a base and having external lead-in wires, the base having an edge which mates with said bulb, one of the lead-in wires having an outer end which is drawn out between the bulb and the edge of the base; applying a potential between a welding electrode of a welding device and a tip of said outer end of the external lead-in wire; and during said potential applying step, interposing a gas flame between the outer end of the external lead-in wire and said welding electrode. - View Dependent Claims (2, 3, 8, 9)
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4. An apparatus for manufacturing a lamp comprising:
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a support for supporting a lamp assembly, the lamp assembly having a bulb coupled to a base and external lead-in wires, the base having an edge which mates with said bulb, one of the lead-in wires having an outer end which is drawn out between said bulb and the edge of said base; a welding device cooperating with said support, said welding device having a welding electrode so disposed with respect to said support as to be adjacent to the outer end of said external lead-in wire, said welding device being for applying a potential between said welding electrode and the outer end of the lead-in wire; a gas burner so disposed with respect to said support and said welding device as to interpose a flame between the outer end of the external lead-in wire and said welding electrode. - View Dependent Claims (5, 6, 7, 10, 11)
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12. A method for manufacturing a lamp, comprising the steps of:
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preparing a lamp assembly so as to have a bulb coupled to a base and having external lead-in wires, the base having an edge which mates with said bulb, one of the lead-in wires having an outer end which is drawn out between the bulb and the edge of the base; applying a potential between a welding electrode of a welding device and a tip of said outer end of the external lead-in wire, the welding electrode and the tip of the outer end of the external lead-in wire defining a gap therebetween; and during said potential applying step, increasing the electrical conductivity in the gap to reduce the criticality of the size of the gap and to reduce the criticality of the characteristics of the electrical energy supplied to the welding electrode, said electrical conductivity increasing step being carried out by interposing a gas flame into said gap.
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13. An apparatus for manufacturing a lamp comprising:
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a support for supporting a lamp assembly, the lamp assembly having a bulb coupled to a base and external lead-in wires, the base having an edge which mated with said bulb, one of the lead-in wires having an outer end which is drawn out between said bulb and the edge of said base; a welding device cooperating with said support, said welding device having a welding electrode so disposed with respect to said support as to be adjacent to the outer end of said external lead-in wire, said welding device being for applying a potential between said welding electrode and the outer end of the lead-in wire, said welding electrode and the outer end of said lead-in wire forming a gap therebetween; and means for increasing the electrical conductivity in said gap to thereby reduce the criticality of the size of the gap and to reduce the criticality of the characteristics of the electrical energy supplied to the welding electrode, said electrical conductivity increasing means including a gas burner so disposed with respect to said support and said welding device as to interpose a flame into the gap.
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Specification