  Unitary anti-self-dual connections on Asymptotically Locally Flat (ALF)
hyperk\"ahler spaces are constructed in terms of data organized in a bow. Bows
generalize quivers, and the relevant bow gives rise to the underlying ALF space
as the moduli space of its particular representation -- the small
representation. Any other representation of that bow gives rise to
anti-self-dual connections on that ALF space.
  We prove that each resulting connection has finite action, i.e. it is an
instanton. Moreover, we derive the asymptotic form of such a connection and
compute its topological class.
