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Old 01-07-22, 09:10 AM
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Sonofacqms Sonofacqms is offline
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Default Blowholes?

Has anyone got a timeline when badges were first made without blowholes?

Rob
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Old 01-07-22, 09:28 AM
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It depends how you mean Rob, some V.B. badges do not have them, however, rather than being tightly overlaid I’d describe such examples as of a loose fitting ‘tagged’ construction which I’d theorise allowed hot gas or excess braze to escape.

If counting such examples then they would in a very limited sense pre-date 1908.

Certainly in WW1 companies like Tiptaft and Lambourne weren’t using them. The Board of Trade Labour Gazette 1914-19 shows the award dates of these ‘badge metal’ contracts.
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Old 01-07-22, 10:21 AM
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Default Blowholes

Thanks Luke for that information.

Rob
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Old 01-07-22, 10:41 AM
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Keith Blakeman Keith Blakeman is offline
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Quote:
Originally Posted by Luke H View Post
It depends how you mean Rob, some V.B. badges do not have them, however, rather than being tightly overlaid I’d describe such examples as of a loose fitting ‘tagged’ construction which I’d theorise allowed hot gas or excess braze to escape.

If counting such examples then they would in a very limited sense pre-date 1908.

Certainly in WW1 companies like Tiptaft and Lambourne weren’t using them. The Board of Trade Labour Gazette 1914-19 shows the award dates of these ‘badge metal’ contracts.
In my opinion where VB's are involved it's joining or overlaying two whitemetal parts where an overspill of copper braise can ruin the looks. Silver solder can be used at lower temperatures so no need for vent holes.
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