The HV batteries were normally dry batteries and no rechargeable. The filament of 1 V tubes as well. Filaments with larger voltages were normally lead acid batteries and the voltage was adjustable in the radio with a variable resistor.
Any idea of the year of manufacturing?
Replying to this very old, specific topic.
The date of manufacture is well before 1933. In 'Radio Retailing Magazine', January 1933, there is an exhortation to radio salesmen to find these "old timers, perhaps still operating in somebody's sitting room", and sell in a modern replacement.
So, on that old rig, I have drawn a schematic from examination.
It's confirmed from analyzing the schematic to be operated from a single 32VDC source, so that would be the old "Farm System" of yore, with a 32V battery or bank of cells, and if one was doing well a 32V gasoline powered generator to complement that, which is what my grandfather had.
The plate supply is 32VDC, and the type 32 and 21A filaments are individually operated via dropping resistors from this B+.
To confirm it, The dropping resistor value for each tube was added to the quotient of the filament voltage over the filament current, to give the total resistance. 32V divided by that number is equal to the tube's filament current. It would not be too wasteful if one has a large secondary battery that is kept charged by a gas or wind generator.
Figuring that bit out helped me with the pilot lamp identification (it is missing).
A spreadsheet was made up wherein one enters the battery voltage, dropping resistance, candidate lamp data: voltage and current. A column provides a degree of error for each case of the battery voltage, series dropping resistor, and lamp voltage and current data. The number closest to zero is the best bet, with negative values being preferable (lower voltage to the lamp)
That workbook is attached, perhaps it will help someone.
At this time, too many estates have caused the radio to be inaccessible, but it's still safe here and when I can get to it I can report on it further and maybe have a few pictures of it. Thanks to all who have helped about the tubes information and all.
BTW I recently found a "Talking House 5.0" part 15 AM transmitter. It sounds good, and there are some improvements to be done and mods on the web demonstrating the better audio quality afterward. Later on the PC can play oldies through it.