Im looking for a chart that helps you translates the old tube symbol into the new format.
Your tube symbol is indeed ancient. It seems to be a triode having three elements:
- A directly-heated filament/cathode (filament + cathode are combined into one element)
- A grid
- A plate
Most modern tubes have indirectly-heated cathodes. They separate cathode and filament into two separate elements. If you do have a tube with directly-heated cathode, you would show this as a filament, and omit the cathode. You should make it clear that the filament symbol serves two purposes: cathode + filament.
Many modern tubes contain two triodes. Like 12AX7. They are shown with a split-open envelope. One would be titled 12AX7a, the other 12AX7b.
Tube base pin #'s are very often added to a schematic.
It is often customary to not show indirectly-heated filaments. Their wiring clutters-up a schematic diagram. Filaments are shown elsewhere on a schematic, with pin #'s and text added to show which tubes they belong to.