Anyone Remember This?

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Pauliewog
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Post by Pauliewog » Tue. Dec. 20, 2016 10:16 pm

I just picked this up on E-Bay. Im not sure, but it looks like an early complimentary manometer. :cry:

Paulie

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Hambden Bob
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Post by Hambden Bob » Tue. Dec. 20, 2016 10:21 pm

Not Shabby ! They knew how to cover the process in them 'thar days ! :up:

 
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CoalisCoolxWarm
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Post by CoalisCoolxWarm » Wed. Dec. 21, 2016 10:05 am

Nice find!

Interesting reminder of how "simple" things can be 8-)

 
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Lightning
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Post by Lightning » Wed. Dec. 21, 2016 10:32 am

Hook it up, I wanna see it go lol :D


 
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Pauliewog
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Post by Pauliewog » Wed. Dec. 21, 2016 8:25 pm

Filled her with water, added a drop of food coloring, and hooked it up to the upper test port in my flue.

It only moved a hair to the negative with a draft of - .04 reading on the magnehelic. When I moved the hose near the combustion air intake it picked up to almost a -.50

Wonder if it was used to set up the combustion air on the early stokers rather than chimney draft? We're barometric dampers around in the late 40's and early 50's?

Paulie

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cabinover
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Post by cabinover » Wed. Dec. 21, 2016 9:30 pm

My manometer uses a substance that isn't water IIRC. Some kind of very light oil maybe? As for where the draft is measured I can't see where there would be a difference before or after the fire providing there is no baro to affect things.

Could it be a different graduation? Like inches of water column vs 1/10th inch WC?

Just throwing it out there for a thought.

 
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Post by coaledsweat » Wed. Dec. 21, 2016 9:36 pm

https://www.google.com/patents/US2033398

January 28, 1933 is the original patent.

 
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Pauliewog
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Post by Pauliewog » Wed. Dec. 21, 2016 10:49 pm

cabinover wrote:My manometer uses a substance that isn't water IIRC. Some kind of very light oil maybe?

Yes, the Dwyer manometers that a lot of our members installed use a special fluid. I'm pretty sure someone posted a replacement oil with a compatability specific gravity
.

As for where the draft is measured I can't see where there would be a difference before or after the fire providing there is no baro to affect things.

A while back there was a thread questioning the correct manometer location. I added another port above my barometric damper and connected a second magnehelic guage to to that port. Over the next few weeks I found there to be very little difference between the readings on either
.

Could it be a different graduation? Like inches of water column vs 1/10th inch WC?

The graduations are in 1/10" from Zero to +or- 2" I am assuming it would refer to WC


Just throwing it out there for a thought.
I appreciate your input, that's why I posted it :) ....... When I get time I think I'll bench test it against the manometer using a slightly higher vacuum or pressure.


 
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Pauliewog
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Coal Size/Type: Stove, Chesnut, Pea, Rice / Anthracite

Post by Pauliewog » Wed. Dec. 21, 2016 10:57 pm

coaledsweat wrote:https://www.google.com/patents/US2033398

January 28, 1933 is the original patent.
Thank You ! :D I didn't realize they were in use that early. I didn't see my first new fangled automatic stoker till the mid 50's. :D

And, that was in my neighbors house! We grew up with a hand fired Octopus and a MPD.

Paulie

 
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Post by coaledsweat » Thu. Dec. 22, 2016 7:36 am

I don't think they saw widespread use until the '50s, you know how those old timers were! :)

 
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Post by Lightning » Thu. Dec. 22, 2016 8:19 pm

Yeah it appears to me that this mano uses an actual vertical column of water marked in tenths of an inch. It would be difficult to read hundredths on it very accurately. But none the less, a Neato piece of equipment :)

 
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Doby
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Post by Doby » Thu. Dec. 22, 2016 8:23 pm

coaledsweat wrote:I don't think they saw widespread use until the '50s, you know how those old timers were! :)
Yea all these new fangled gadgets wonder if a canarie would work for a co detector

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