| The ideal mechanical advantage of a compound machine is the product of the ideal mechanical advantages of its components. |
| The steam-engine is a compound machine which exerts a moving force, and is the primum mobile or first moving power to give motion to other machines, mills, or engines. |
| In any compound machine, its power is to the weights in the compound ratio of the power to the weight in all the simple machines that compose it. |
| When two or more of the simple mechanical powers are made to act in conjunction, to produce a given effect, the contrivance resulting from the union is called a compound machine. |
| The mechanical advantage of a compound machine is much greater than that of a simple machine. |
| The ideal mechanical advantage of a compound machine is the product of the ideal mechanical advantages of the simple machines of which it is comprised. |
