What type of motor is this OLD GE motor

All,
I have an old GE motor that I cannot either date or figure out exactly
what type of AC motor it is. The label says it's a 110 volt, 60 Hz.,
1/4 Hp. , single phase machine. It runs well. Power to the motor is
connected to a couple brushes that rub on rotor mounted slip rings.
The slip rings are flat rather than cylindrical. The motor has a wound
rotor with a centrifugal switch on board. This starting switch
switches a winding on the rotor. The stator is made of laminated
steel. The laminations are slotted. The slots are sorta keyhole shaped
with the narrow part of the slot opening into the interior of the
motor. The round part of each keyhole slot is filled with a metal rod
that has been peened over like a rivet to keep it in place. The motor
looks to me like a typical resistance start split phase single phase
motor, but inside out. I wonder if the construction was used to avoid
patent infringement. Anybody know anything about these motor types?
Like what type it really is and maybe when it might have been made?
Thanks,
Eric

 

[M Philbrook]

In article <8vomcbpsbfvg22h24jn7icbq9vtsl34kl6@4ax.com>,
etpm@whidbey.com says...

All,
I have an old GE motor that I cannot either date or figure out exactly
what type of AC motor it is. The label says it's a 110 volt, 60 Hz.,
1/4 Hp. , single phase machine. It runs well. Power to the motor is
connected to a couple brushes that rub on rotor mounted slip rings.
The slip rings are flat rather than cylindrical. The motor has a wound
rotor with a centrifugal switch on board. This starting switch
switches a winding on the rotor. The stator is made of laminated
steel. The laminations are slotted. The slots are sorta keyhole shaped
with the narrow part of the slot opening into the interior of the
motor. The round part of each keyhole slot is filled with a metal rod
that has been peened over like a rivet to keep it in place. The motor
looks to me like a typical resistance start split phase single phase
motor, but inside out. I wonder if the construction was used to avoid
patent infringement. Anybody know anything about these motor types?
Like what type it really is and maybe when it might have been made?
Thanks,
Eric

You have an antique ( real old one ).

Slip phase wound rotor..

They made pholyphase motors also with wound rotors via slip rings.
those you could tie a 3 pole rheostat to adjust the current in the rotor
to control starting torque and tension or running speeds.

Many times switched in R's for soft starting and then connect all three
rings for full power once up there.

Jamie


Jamie

 

On Mon, 22 Feb 2016 19:55:18 -0500, M Philbrook
<jamie_ka1lpa@charter.net> wrote:

In article <8vomcbpsbfvg22h24jn7icbq9vtsl34kl6@4ax.com>,
etpm@whidbey.com says...

All,
I have an old GE motor that I cannot either date or figure out exactly
what type of AC motor it is. The label says it's a 110 volt, 60 Hz.,
1/4 Hp. , single phase machine. It runs well. Power to the motor is
connected to a couple brushes that rub on rotor mounted slip rings.
The slip rings are flat rather than cylindrical. The motor has a wound
rotor with a centrifugal switch on board. This starting switch
switches a winding on the rotor. The stator is made of laminated
steel. The laminations are slotted. The slots are sorta keyhole shaped
with the narrow part of the slot opening into the interior of the
motor. The round part of each keyhole slot is filled with a metal rod
that has been peened over like a rivet to keep it in place. The motor
looks to me like a typical resistance start split phase single phase
motor, but inside out. I wonder if the construction was used to avoid
patent infringement. Anybody know anything about these motor types?
Like what type it really is and maybe when it might have been made?
Thanks,
Eric

You have an antique ( real old one ).

Slip phase wound rotor..

They made pholyphase motors also with wound rotors via slip rings.
those you could tie a 3 pole rheostat to adjust the current in the rotor
to control starting torque and tension or running speeds.

Many times switched in R's for soft starting and then connect all three
rings for full power once up there.

Jamie


Jam

Greetings Jamie,
Do you know if this type was made to avoid patent infringement? Any
idea how to find out how old it is? I have been trying on the
interwebs with little results. I'm hoping it was made in 1906 or
before.
Eric