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The head frame you speak of is known as the "poppet head".The old ones were timber then along came iron & steel.Here's a simple oldy.[ATTACH=full]116945[/ATTACH]
The head frame you speak of is known as the "poppet head".
The old ones were timber then along came iron & steel.
Here's a simple oldy.
[ATTACH=full]116945[/ATTACH]
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