The UNITED STATES AIR COMPRESSOR Co.

by Roy
(16948)

UNITED STATES AIR COMPRESSOR Co

UNITED STATES AIR COMPRESSOR Co

This is a 1947 66 gal 7CFM 1 pump with a slow start 220+v motor Air Compressor. This was my dads old compressor and I'm in the process of restoring it. Mainly I want to know the technical name and information on the original motor and if I can alter somehow the motor I have to correctly run the compressor. The pictures show the information on the new motor we had operating the compressor but incorrectly. The old motor started out real slow then clicked and sped to full speed. The new motor nearly rips the belts off as it starts. Please help me with this information and possibly if you have a motor that will operate my pump a little more efficiently than the old one and would consider trading for my new motor. Unfortunately I can't upload any more pictures nor can I post a simple link from photobucket, everything has changed!!!

Thanks

Comments for The UNITED STATES AIR COMPRESSOR Co.

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Dec 27, 2015
u.s. air compressor
by: hank

hello:

It looks like the MK model, should be 1 to 3
h.p. motor depending on motor pulley size, 1 hp at 280 rpm and 3 h.p. at 684 rpm at 12.3 cfm

Sep 06, 2015
slow start compressor,
by: Anonymous

you should be sure your check valve between the tank and compressor pump is working and make sure your compressor is unloading. It has to bled the air between the check valve and pump off so its not starting with a load. If its got pressure coming back from the tank it will start hard, tear belts off and so on.

Jun 19, 2015
its working
by: Roy

Well my 2010 or something Crapsman 60 Gal air compressor that I just bought used took a crap. Goes to 90 lbs of pressure and just keeps running, won't fill up. So, I got the antique working, just put it all back together tightened the belts and wired it up to the new plug I made for the crapsman and it works. I need some fittings and I should be back in business. I think all I need is a compassitor wired in to my motor to make it start slower. I'm still not sure how to do this but I'll figure it out.

Jun 14, 2015
Photos
by: Bill

To add photos to an existing thread, please start a new thread, and cross reference the new to this one... " The UNITED STATES AIR COMPRESSOR Co. " and I will will move the images for you.

Jun 14, 2015
Additional Pictures
by: Anonymous

How can I add pictures?

Jun 14, 2015
on to something
by: Anonymous

Ok, I think were on to something now, forgive my ignorance in electronics but can anyone tell me what voltage controller I need like a part number Or I may even have it if its not part of the original motor. my father gave that to someone to scrap. Thanks so far, I might be able to start asking the right questions to get me where I need to be. I'll try to post a picture of the motor data I have.

Jun 14, 2015
Motor
by: Doug in s.d.ca

Just a thought -

I wonder if maybe the original motor actually started a half voltage (special winding - 120V), and then the click was switching to full 220V.

Can't say I've seen that, but it's a possibility.

Anyone seen such a beast?

Jun 14, 2015
Motor
by: Doug in s.d.ca

OK, what you have is probably a capacitor start motor, which as you have seen, jump to speed.

You can get a "belt drive" motor, or use a "soft start" controller to get it to ramp up in an orderly fashion.

Grainger, for e.g., has both.

Jun 14, 2015
old motor
by: Anonymous

Doug I forgot to mention the old motor is gone and I have no information on it.

Jun 06, 2015
Motor
by: Doug in s.d.ca

Does the old, slow start motor have capacitors? The slow start may be due to the mass of the flywheel + a bad cap. The click is when it starts the run phase of the startup.

What are the motors? Manufacturer and model.

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Need pressure switch for a United States Air Compressor of Clevlend

by Jay D.
(Orlando)

Diaphragm United States Air Compressor

Diaphragm United States Air Compressor

Diaphragm United States Air Compressor
Diaphragm United States Air Compressor of Clevlend
Compressor pressure switch diaphragm
Diaphragm from compressor pressure switch

Here are some pics of the pressure switch off my vintage compressor.
As you can see the diaphragm is coming out of the metal piece.
My question is, can I replace this diaphragm? If so how is it held in place? I cant seem to figure out how it is held in there and I don't want to just pry it all apart for fear of destroying it.
If the diaphragm can't be replaced, then I guess I need to replace the whole piece. If this is the case, does anyone have this piece? I can provide more info about the compressor.

Thank you

JD

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Jun 26, 2015
update
by: Jay D.

I did get a replacement pressure switch and installed it this morning. It went right on and works good. $20 on amazon.
But it does not have the vintage look, it is black plastic. So I will continue to keep an eye open for either how to fix the original or for a vintage replacement.

Thank you

JD

Jun 25, 2015
material
by: Jay D.

No I haven't gotten as far as the material yet.
It feels like leather though.

Jun 25, 2015
diaphragm
by: Doug in s.d.ca

I see why you'd be reluctant, but if it's doable best wait a bit to see if Buster comes back with ideas.

Have you tried to find the material?

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Pressure switch for a United States Air Compressor of Clevland

by Jay D.
(Orlando)

I have an older air compressor made by the united sates air compressor company of Cleveland. The diaphragm in the pressure switch has gone out. Do you know where I could find one?

johnddurocher@msn.com

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Jun 23, 2015
thanks
by: Jay D.

cool thank you

Jun 23, 2015
Post pics
by: Bill

Start a new thread. Refer to this one in your new one. Upload up to 4 photos. I'll move them here.

Jun 23, 2015
How to post pics?
by: Jay D

How do I post pics here? I can't seem to see how...



Jun 23, 2015
Thank you.
by: Jay D.

Thank you for the responses. I will post some pics in the next few days. Yes I have the switch apart. I cant see how the diaphragm is held in place. It looks like the piece is pressed in there.

In the mean time I have ordered a new switch and hope it will fit. But I would like to fix the old one to keep the look of the compressor.

Jun 23, 2015
Air Compressor Diaphragm
by: Buster

Hey Jay, I had a similar problem and found the diaphragm material at our local industrial hose and belt supplier. Check around if you have an industrial supply house and they can fix you up. Hope this help, have a great day.
Buster

Jun 22, 2015
diapragm
by: Doug in s.d.ca

Most likely, you'll need to make one or replace the entire unit.

Can you get some pix?

I take it you have it apart or at least unmounted - any mfr info on it?

Looks like USAC of C only makes pumps, now.

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