  Spectroscopic orbits are computed for inner pairs in 9 hierarchical multiple
systems (HIP 19639, 60845, 75663, 76816, 78163, 78416, 80448, 84789, and HD
105080) and for one simple binary HIP 61840. All subsystems are double-lined,
and their periods range from 2.27 to 30.4 days. Five spectroscopic binaries are
twins with equal masses. Each hierarchical system is discussed individually,
providing estimates of outer periods, masses, orbital inclination, and axial
rotation. For systems with three resolved visual components (HIP 60845 and
80448), the outer and inner visual orbits are determined, complementing the
description of their architecture. The radial velocities of HIP 75663A, 76816B,
and 78163B are found to be variable with long periods, implying that these
hierarchies are 2+2 quadruples. The period-eccentricity relation for
spectroscopic subsystems is discussed.
