Such counties of the State of Oklahoma as are not ready or able to purchase or erect an indigent care facility, but which desire a place to keep the indigent of the county together, are authorized to rent a suitable place and establish an indigent care facility in all other respects the same as though such county or counties had purchased an indigent care facility, and thus obtained a facility for the indigent, except that instead of levying a tax to pay for such facility, the overseers shall levy a tax annually to pay the rental of such facilities.