General > General Technical Chat

Massive old vacuum tube, anyone know what it is?

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macona:
Oh, I realize that, my lathe is from that time period. But there are just parts here that scream production pieces to me. Plus this is a very small school, even smaller back then and I have seen a lot of their other glasswork and brought some of it home and non if it is anything like this.

Sent a message over to radiomuseum, we will see if they respond. Crossing my fingers.

macona:
The TSP has a extra tubulation for evacuation, there is only one connection to the main tube.

Untitled by Jerry Biehler, on Flickr

LaserSteve:
The thing that screams prototype is the ring
of screws in the base. That is one massive virtual leak waiting to happen. I work at a university, two of our more senior machinists regularly make stuff like that.
Now if a certain admin wanna-be hadn't ordered the destruction of our induction heating and hydrogen furnace systems  system I'd be making stuff like that.

Steve

LaserSteve:
If I have to guess a brand, Machlett Labs used to make tubes with similar hallmarks.

Steve

bsfeechannel:

--- Quote from: macona on July 13, 2021, 12:55:22 am ---Oh, I realize that, my lathe is from that time period. But there are just parts here that scream production pieces to me. Plus this is a very small school, even smaller back then and I have seen a lot of their other glasswork and brought some of it home and non if it is anything like this.

Sent a message over to radiomuseum, we will see if they respond. Crossing my fingers.

--- End quote ---

You can also try this guy. He claims to have a collection of more than 4000 lamps and tubes. In fact I found a tube that is very similar in shape to yours, i.e., it has two opposite electrodes, two glass bulbs, and a middle ring.



According to its datasheet, it is used to "decouple the receiver from a common transmitting and receiving antenna during a period of transmission".

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