Help Identifying a Motor

[angsuman]

Hi everyone. It's been a long time since I've posted, but I need help identifying a motor. I've been tasked with restoring this old moving artwork at my school. There are these strange motors that move a drumstick and hit it on a drum.

The motors have very limited travel, they only rotate about 45 degrees. There is a hairspring that provides restoring force for the motor.

I have attached a few pictures. There is a plate that mounts on the surface and is connected to the hairspring. I took the plate off and wasn't able to put it back correctly.

I really appreciate the help in identifying the motor. Thank you.

 

[Frank Berry]

Those are rotary solenoids. If you Google the term, you'll find lots of information.

 

[angsuman]

Thank you so much. I just didn't know what to even look for.

 

[Frank Berry]

You're welcome. Good luck.

 

[kevinkr]

<snip>
I took the plate off and wasn't able to put it back correctly.

<snip>

Plate now facing the wrong way?

As Frank says they are rotary solenoids.