If all you're trying to do is save data, have you tried just opening a copy of the files in Windows. Word will generally open (almost) anything that "contains text" although it may display a lot of trash along with the text if the file has executables or escapes also in it. (Often something that it declines to open can still be examined just by changing the file extension to .txt.) After you clean up a file in Word, you can "save as" back to plain text.

A USB external 3.5" floppy drive should be about $20 (US), and it would be likely that the old computer has a floppy drive to make copies of the files onto floppies(?) - or onto "a floppy" re-used until they're all transferred.

I vaguely recall having lpt2fil on an early DOS machine, but used it so seldom I can't recall WHY.

John