Tilt hoists and lumber unstacking systems

A tilt hoist comprising:

• a rotation table, wherein the rotation table includes
• a tilt frame with an arcuate lower surface;
• and
• a support base with a frame and a plurality of contact members coupled to the frame, wherein the support base is configured to support the tilt frame on the contact members, and the contact members are configured to moveably engage the arcuate lower surface of the tilt frame, such that the tilt frame is movable in opposite rotary directions relative to the support base, along an arcuate path, to thereby rotate about an axis of rotation;
• and
• a platform assembly coupled with the tilt frame and having a first support surface and a second support surface that is transverse to the first support surface,
• wherein the tilt frame is movable along the arcuate path to rotate about the axis of rotation between an upright position, in which the first support surface is generally vertical, and a tilted position in which the first support surface is inclined,
• wherein the platform assembly is operable to support a stack of lumber on the second support surface while the tilt frame is in the upright position and to move the stack of lumber along the first support surface while the tilt frame is in the tilted position, and
• wherein the axis of rotation is above the arcuate lower surface in the upright position and in the tilted position.