Name That Electric Motor

[Glenn F.]

While organizing my collection of spare used motors I come to this one. I pretty sure it’s repulsion induction. Currently wired for 120 volts. Pretty sure it’s running at 1725 rpm (maybe all RI motors do?). Shaft size is 3/4 inch. I carefully polished nameplate but can only make out a letter or two in top right area. Motor starts quickly and runs but makes a rather loud rhythmic noise. I know old 1.5 hp RI Wagoner motor ran quietly on my air compressor years ago. When did they stop making RI motors?

What can you tell me about this motor ….brand, horsepower, approximate age, etc.? Any point in hanging on to it? I am not interested in rebuilding it beyond possibly bearings or brushes, etc. (if available at a decent price).

I’m curious to know anything you can tell me about this motor.

Thank you,
Glenn F.

 

[Geo-TH,In]

While organizing my collection of spare used motors I come to this one. I pretty sure it’s repulsion induction. Currently wired for 120 volts. Pretty sure it’s running at 1725 rpm (maybe all RI motors do?). Shaft size is 3/4 inch. I carefully polished nameplate but can only make out a letter or two in top right area. Motor starts quickly and runs but makes a rather loud rhythmic noise. I know old 1.5 hp RI Wagoner motor ran quietly on my air compressor years ago. When did they stop making RI motors?

What can you tell me about this motor ….brand, horsepower, approximate age, etc.? Any point in hanging on to it? I am not interested in rebuilding it beyond possibly bearings or brushes, etc. (if available at a decent price).

I’m curious to know anything you can tell me about this motor.

Thank you,
Glenn F.

They are called

Emerson Repulsion Start Induction Run AC Motor​

Edmonton Power Historical Foundation presents the Emerson 1901, one half horsepower single phase AC induction motor. This is a repulsion-start induction-run motor. It starts as a repulsion motor and runs as an Induction motor. Until capacitors were added to the split phase stator winding, this scheme provided the starting torque needed for high ...

These motors were used on air compressors that require high starting torque. They were common before capacitors were used on motors.
I have a 1.5 HP motor and compressor. About 80 years old. Make me an offer I can't refuse. The air tank is junk. Because of it's age, I just bought a new DeWalt Air Compressor.

 

[stdsch40]

Ever hear of 'shaded pole' or 'eddy current', or 'homopolar' motors? Interesting antique motors from a bygone era.

 

[wore out]

They are called

Emerson Repulsion Start Induction Run AC Motor​

Edmonton Power Historical Foundation presents the Emerson 1901, one half horsepower single phase AC induction motor. This is a repulsion-start induction-run motor. It starts as a repulsion motor and runs as an Induction motor. Until capacitors were added to the split phase stator winding, this scheme provided the starting torque needed for high ...

These motors were used on air compressors that require high starting torque. They were common before capacitors were used on motors.
I have a 1.5 HP motor and compressor. About 80 years old. Make me an offer I can't refuse. The air tank is junk. Because of it's age, I just bought a new DeWalt Air Compressor.

Emerson?

Emerson old 'uns?

 

[zuhnc]

I have a 1/2 HP Westinghouse repulsion motor, Model CU, electrically reversible, on my 1932, 11-1/4" South Bend lathe. I had to rewind it a year ago, completely, and it works great. Nice and quiet; just a low hum. Turns 1140 RPM. It does NOT have any brush lifting or commutator shorting (necklace) arrangement and will NOT continue to run if the brushes are lifted; coasts down to a stop and just hums.

 

[caterpillar guy]

There are several possibilities. A GE,Emerson,Dayton and even an old Century motor. I suppose it could also be a Wagoner though I think maybe more likely to be a GE or Dayton. At the right there is a RorB A to the left of the rivet and slightly above to the left and slightly below there is G or C Oor 0 then below that there are some numbers 4096 or 4O96 not for sure if the O's are Os or zeros. the do believe the Ror B is an R though.

 

[Glenn F.]

There are several possibilities. A GE,Emerson,Dayton and even an old Century motor. I suppose it could also be a Wagoner though I think maybe more likely to be a GE or Dayton. At the right there is a RorB A to the left of the rivet and slightly above to the left and slightly below there is G or C Oor 0 then below that there are some numbers 4096 or 4O96 not for sure if the O's are Os or zeros. the do believe the Ror B is an R though.

Good eye on reading characters off the plate.

Glenn F.

 

[Geo-TH,In]

Ever hear of 'shaded pole' or 'eddy current', or 'homopolar' motors? Interesting antique motors from a bygone era.

The shaded-pole motor is the original type of AC single-phase electric motor, dating back to at least as early as 1890. A shaded-pole motor is a motor, in which the auxiliary winding is composed of a copper ring or bar surrounding a portion of each pole to produce a weakly rotating magnetic field.

The shaded pole motor is still used on small bathroom vent fans and used in refrigerators to move the cold air.

 

[Fritz Maurer]

They are called

Emerson Repulsion Start Induction Run AC Motor​

Edmonton Power Historical Foundation presents the Emerson 1901, one half horsepower single phase AC induction motor. This is a repulsion-start induction-run motor. It starts as a repulsion motor and runs as an Induction motor. Until capacitors were added to the split phase stator winding, this scheme provided the starting torque needed for high ...

These motors were used on air compressors that require high starting torque. They were common before capacitors were used on motors.
I have a 1.5 HP motor and compressor. About 80 years old. Make me an offer I can't refuse. The air tank is junk. Because of its age, I just bought a new DeWalt Air Compressor.

George, sure would like to have a look at what you have for sale, I love old compressors

 

[buickanddeere]

While organizing my collection of spare used motors I come to this one. I pretty sure it’s repulsion induction. Currently wired for 120 volts. Pretty sure it’s running at 1725 rpm (maybe all RI motors do?). Shaft size is 3/4 inch. I carefully polished nameplate but can only make out a letter or two in top right area. Motor starts quickly and runs but makes a rather loud rhythmic noise. I know old 1.5 hp RI Wagoner motor ran quietly on my air compressor years ago. When did they stop making RI motors?

What can you tell me about this motor ….brand, horsepower, approximate age, etc.? Any point in hanging on to it? I am not interested in rebuilding it beyond possibly bearings or brushes, etc. (if available at a decent price).

I’m curious to know anything you can tell me about this motor.

Thank you,
Glenn F.

not going to lift any data from the serial number plate after grinding the numbers off .

 

[Glenn F.]

not going to lift any data from the serial number plate after grinding the numbers off .

No grinding. 0000 steel wool and WD40. Maybe a little aggressive but nothing else was working.

 

[caterpillar guy]

That looks to be about a horse motor. We have one I got inside and changed the leads to it since the insulation was all shot on them and cleaned it up inside some. Wired it up on the air compressor it was on with 220 instead of 110 it will now come off the starting necklace and get up to speed. Works well for that job. It is about a horse and a half. They are heavier than the newer cap motors.

 

[Geo-TH,In]

George, sure would like to have a look at what you have for sale, I love old compressors

I live in Terre Haute, In.
This compressor is in the attic of my old workshop.
I have no use for this antique compressor and motor. The tank has a pin hole in it.
I pushed on the hole with a screwdriver and the tank is paper thing.
When I was younger, I removed the motor and compressor. Somehow I got the tank in the attic. Then installed the motor and compressor.
You are welcome to it.
How do I send you an email on this new forum of you send me one.

 

[Jim.ME]

I live in Terre Haute, In.
This compressor is in the attic of my old workshop.
I have no use for this antique compressor and motor. The tank has a pin hole in it.
I pushed on the hole with a screwdriver and the tank is paper thing.
When I was younger, I removed the motor and compressor. Somehow I got the tank in the attic. Then installed the motor and compressor.
You are welcome to it.
How do I send you an email on this new forum of you send me one.

You use the Conversation feature, which is the site's private messaging system. Generally, "Start Conversation" is a button one will see when they click on another's avatar. It appears you have that turned off (conversations blocked) in your profile preferences as it is not visible when one clicks on your avatar. You should also be able to find the 'Start Conversation" to reach someone if you click on the envelope beside your username at the top of the page. You may need to unblock Conversations in your profile preferences to receive a reply.

 

[Geo-TH,In]

You use the Conversation feature, which is the site's private messaging system. Generally, "Start Conversation" is a button one will see when they click on another's avatar. It appears you have that turned off (conversations blocked) in your profile preferences as it is not visible when one clicks on your avatar. You should also be able to find the 'Start Conversation" to reach someone if you click on the envelope beside your username at the top of the page. You may need to unblock Conversations in your profile preferences to receive a reply.

I've never used emails on this site.
I just discovered YT has my outdated email address
Try sending me an email or check to see if it is open
Thank you.

 

[Jim.ME]

Geo-TH,In,

I don't have your email so I can't send you one.

This is not the old system where you had your email tied to a post so one could click on the Send email button in a post to send a private direct personal email to the person who wrote the post. I referred you to the Conversation feature which is like a private email between you and another member(s) on this site, using the site software system. It is separate from personal emails. Using that feature there you can swap personal email addresses, phone numbers, or just converse as you would with regular email.

Look at the differences seen when I click on your avatar and Glenn F.'s avatar. See the Start conversation button in his? See it is missing from yours? You have the Conversation feature shut off in your preferences. Turn it on then one can click on it, the conversation form opens to type a title and message in (swap real email addresses or phone numbers if you wish), then you send it. A red indicator will appear beside the envelope up by the recipient's username when a Conversation (message) is received.

Edited to add Geo-TH,In to avoid confusion of who the reply was to.

 

[Hdonly]

I have an old Saylor-Beall compressor from the 1930's. It has a brushed ac motor on it. Still pumps just fine. It is a small compressor. The motor is 1/3 hp.