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#744452
Fri Feb 28 2020 01:41 PM
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Joined: Sep 2018
Posts: 40 Likes: 2
Active Member
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OP
Active Member
Joined: Sep 2018
Posts: 40 Likes: 2 |
Why were some of the visible pump glass cylinders blue? Seems like they are more desirable so there must have been less of them?
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Please - NO offers to Buy or Sell in this forum category
Statements such as, "I'm thinking about selling this." are considered an offer to sell.
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Joined: Jan 2011
Posts: 2,085 Likes: 11
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Joined: Jan 2011
Posts: 2,085 Likes: 11 |
There was a post on Oldgas some time ago. You first question came up and it was that blue cylinder kept fuel cooler
Someone correct me if I'm wrong.. done a search and couldn't find it..
*Wanted Pierce Pennant Petroleum*
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Joined: Feb 2003
Posts: 2,457 Likes: 24
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Theory was that the sun leached the strength from the gasoline. Cobalt was added to the glass to give it a blue color and act as sunshade. There were some deep purple cylinders out there too. I have one in a Fry Speedway. Paul www.severngaspumps.com
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Joined: Nov 2015
Posts: 458
Petro Enthusiast
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Petro Enthusiast
Joined: Nov 2015
Posts: 458 |
i think the sun turned the glass blue.we used to find mod t headlight linzes that had turned blue.they would not have made them way. charley
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Joined: Apr 2003
Posts: 2,195 Likes: 74
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Was some magnesium or flint in some of the glass back then and the sun would turn those cylinders a blue tint depending how much was in the glass.
Wanted early tin litho signage. petro, farm, auto, etc.
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Joined: Feb 2011
Posts: 1,158 Likes: 100
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Thank you Paul , your theory makes most sense to me.i always liked the blue tint cylinders.
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Joined: Apr 2003
Posts: 2,195 Likes: 74
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Posts: 2,195 Likes: 74 |
I don't know how sun would leach gasoline. In fact gas expands in the heat, so they never filled the cylinders to the top with gas when it was hot. Most of the time cylinders were empty and gas drained back to the tank.
Wanted early tin litho signage. petro, farm, auto, etc.
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