meaning - Is there a rule for "wouldn't" used to mean "didn't want"? - English Language & Usage Stack Exchange
Why ‘wouldn’t’ and not ‘didn’t’?
word usage - "would not" vs. "did not" - English Language Learners Stack Exchange
Wouldn't/Would not | WordReference Forums
Videos
Would is a modal verb with several uses, of which one is to express past intention or willingness. As you suggested, in your example, it expresses willingness, or rather, because of the negative n’t, unwillingness. You could say but he didn’t want to take me on, but the use of wouldn’t makes the statement a little less explicit.
It doesn't state that "he" didn't want to "take me on", it says that this is a thing that he was not going to do.
It could be that "he" didn't want to, it could be that he didn't have time, there was a full roster of people participating and no more could be added, that as much as he really did want to include the speaker they lacked the prerequisite skill at the task in question, or anything else.
We're informed of the lack of action, not of the motivation.
We can sometimes infer that the reason someone wouldn't do something is that they don't want to, but not always, and not here (in the bare sentence at least, perhaps in the full passage we can).
Wouldn't is a contraction of "would not" and denotes a lack of permission or willingness on the part of the subject. Your father didn't want to let you borrow the car, and the landlady didn't want you to have guests.
The meaning is the same in both 1. and 2.
wouldn't is stronger than didn't.
If your father didn't let you borrow the car, you asked him once, and he replied 'no'.
If your father wouldn't let you borrow the car, you pleaded and begged, and still he said 'No. Absolutely not!'
In many cases the exchange of words, does not actually need to take place. We play the scenario in our heads, and determine with ourselves whether pleading helps. If we determine that pleading would not help, we use wouldn't even if they actually might, if only we asked them.