You open 1♥, LHO doubles. Pard bids 1♠ (transfer to 1N, showing 6 to a poor 10). He doesn't deny 4♠, but he won't have 4 good ones. RHO passes.
Note: Obviously you aren't compelled to accept the transfer, so don't get all confused about the structure. If you can't conceptualize the problem, just pretend pard bid 1N over the x.
(Ben / Gerardo - if you want to add 2 and 3 hearts to the poll, please do so)

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