Hoist assembly

A hoist assembly, comprising:

• a frame;
• a first sheave assembly fixed relative to the frame, wherein the first sheave assembly comprises:
• a first sheave;
• and
• a second sheave;
• a second sheave assembly movable relative to the frame along a longitudinal axis, wherein the second sheave assembly comprises:
• a third sheave comprising a third axis of rotation;
• and
• a fourth sheave comprising a fourth axis of rotation angularly-oriented relative to the third axis of rotation, wherein the third axis of rotation and the fourth axis of rotation are positioned in a plane, and wherein the longitudinal axis extends between the third axis of rotation and the fourth axis of rotation and is oriented perpendicular to the plane;
• and
• a cable engaged with the first sheave assembly and the second sheave assembly.

A hoist assembly for hoisting an object onto a frame, comprising:

• a first sheave assembly fixed relative to the frame, wherein the first sheave assembly comprises:
• a first sheave;
• and
• a second sheave;
• a second sheave assembly movable relative to the frame, wherein the second sheave assembly comprises:
• a casing comprising:
• a first slot;
• and
• a second slot angularly oriented relative to the first slot;
• and
• a first replaceable sheave positioned in the first slot;
• and
• a second replaceable sheave positioned in the second slot;
• and
• a cable engaged with the first sheave assembly and the second sheave assembly.