Who is an adjuster? [closed]

Then Hartstein, the adjuster for the insured, and Lazard, the adjuster for the company, both of whom had had more or less to do with her in connection with settling up for other fires, recognised her.

It's a phrase from a story, written in 1912 year. In the dictionary said that an adjuster is someone whose job is to get information about an accident, theft, etc. in order to decide how much money to pay an insurance customer.
In the sentence there are two kinds of adjusters, could anyone try to explain the duties of both of them, please.

Here is a definition of insurance adjuster:

An insurance adjuster is someone who investigates claims to determine how much (or if) your insurance company should pay you for damages/losses to your stuff or place.

Source

In general, the implied duty of the adjuster for the insured (Hartstein) would be to get as much money as possible for the claim; the implied duty of the adjuster for the company (Lazard) would be to grant as little as possible.

In practice, these two parties would attempt to come to an equitable agreement, or if unable, would go to court.