Grandpa's old compresser ID

[Tom Robinson]

Hi Thanks for accepting me to your group I sure have enjoyed looking at the different kind of compressers on this site and the nice restorations people have done. I own 3 Old compressers now and I bought this on Marketplace last week from a guy that said his Grandpa used this in his old service station and it was disassembled to remove from building another person got the original tank so I bought motor and pump and it came with a Manchester 80 gallon tank dated 1995 the guy picked up to build a compresser this Square D pressure switch that was used for this equipment switch closes at 145 and opens at 175 I would love to get it up and running again I have been searching to ID this for a few days and came across the GJ and seen compresser equipment and hope someone can ID 220 motor and 2 stage pump there is no tags yhe motor has a 4781 stamped in case on top I paid 120.00 for everything I like the sound they make like my big 2 stage on a 1957 orange Devilfish 80 tank thanks for your help with ID or information on Grandpa's compresser. Tom

 

[Fluxion]

That's an old Quincy looks like a model 310 I saw at an auction a while back. Even looks kinda like an early 325 looking at the cooling fins but it doesn't appear to have an oil pump so its an early ROC. Is there a number stamped on the end of the crankshaft? What is the diameter of the sheave on the pump? a 310 is 14" the 325 is 16".

 

[Tom Robinson]

Thanks for your time the crank has a #4 stamped and sheave is 16in

 

[Fluxion]

I think it’s a 320 after poking around a bit. The sheave would be 16” on the 320 as well. The number 4 would be its “Record of Change”. It’s an old one!

 

[Tom Robinson]

I thought I sent another message but I didn't hit reply I guess but wanted to thank you for your time helping me ID the Quincy pump Model 320 ROC 4 the tall acorn nuts on cly head I thought someone got creative and put them on and not factory installed it's been fun researching this 320 and learning about Quincy pumps I see they manufactured a lot of pumps that look very similar to each other so with mine being a older model under the blue paint is a green that looks like WW2 Army jeep green so I wonder if it's Military WW2 surplus that the guy's Grandpa bought for his service station maybe I'm not sure of the colors of Quincy equipment from that era other then blue here is the pressure switch that was used with this pump with green color and you can see the green on the pump in some places the pump turns over ok with the popping sound should pump be inspected or try and run it like it is and see how it does not sure if pump is worth putting money into being so old but I will if not to expensive. I have a Saylor Beal 2 stage on my DeVilbiss 80 gallon tank so I have air and the Quincy pump and motor and tank I have 120.00 into it so no worries there thought it would make a fun project to put back together again. any help is very much appreciated Thanks Tom