In my country, a lot of libraries are now open again, so I could acess the book.
As I suspected, it is not of much help. There's a short entry for every Zurich family name, without any sources. Just at the end of the book, there is one page with sources, mainly books. The sources in the book seem only to contain original sources before 1500. So I don't think they will be of any help if you are stuck around 1700.
But at least the introduction of the book now gives us a clue: on each familyname, there are the nowaday "Heimatorte" (swiss hometown, which is not necessarily the birthtown or place of residence), the earliest mentioned people of that name and the meaning of the name.
So what happened here, is the autor of the book just listed some random early mentioned people with the family name, in this case "Heini Ernst 1416 Dättlikon" and "Heiny Ernst 1463 Dättlikon" and others from other towns.
It doesn't mean that this Heini and Heiny are related or related to other Ernst from Dättlikon (as he states in the introduction). It could be, but not necessarily.
So there are just the early mentioned people, but there's no family tree behind it at all.