Re: Merlin inspection building question
Posted by Steve203 On 2014/5/24 10:47:20
<i>I never took notice of whether Lakey's casting logo is also on various other castings like transmission parts and the like.</i>
Sorry, forgot about that question last night.
Lakey cast grey iron, which is used for blocks and heads. In grey iron, the graphite in the iron forms flakes which tend to block sound, so a grey iron engine runs quieter than an engine made of other materials.
iirc, the Ultramatic cases by 55 or 56 were aluminum, so would have been produced elsewhere. The gears inside were probably forgings.
Differential carriers, gear cases (which hold the diff gears inside the carrier), U joint yokes, steering knuckles and other parts are usually cast in malleable iron, which is stronger and less brittle than grey iron.
In the summer of 75, I was working in a malleable foundry in Albion, Mi. While searching through some old files, I found drawings for Packard diff carriers dated around 48, so it looks like Packard didn't cast malleable even when the Harper foundry was open.
The foundry mark for Albion Malleable was an A in a circle. It's sister foundry in Tiffin, Ohio used a T in a circle, but Tiffin looked too new to have been operating when Packard was in business. The Albion foundry closed and was torn down about 10 years ago.
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Sorry, forgot about that question last night.
Lakey cast grey iron, which is used for blocks and heads. In grey iron, the graphite in the iron forms flakes which tend to block sound, so a grey iron engine runs quieter than an engine made of other materials.
iirc, the Ultramatic cases by 55 or 56 were aluminum, so would have been produced elsewhere. The gears inside were probably forgings.
Differential carriers, gear cases (which hold the diff gears inside the carrier), U joint yokes, steering knuckles and other parts are usually cast in malleable iron, which is stronger and less brittle than grey iron.
In the summer of 75, I was working in a malleable foundry in Albion, Mi. While searching through some old files, I found drawings for Packard diff carriers dated around 48, so it looks like Packard didn't cast malleable even when the Harper foundry was open.
The foundry mark for Albion Malleable was an A in a circle. It's sister foundry in Tiffin, Ohio used a T in a circle, but Tiffin looked too new to have been operating when Packard was in business. The Albion foundry closed and was torn down about 10 years ago.
Attach file:
(37.30 KB)
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