the dynamo itself was but an ingenious channel for conveying somewhere the heat latent in a few tons of poor coal hidden in a dirty engine-house carefully kept out of sight; but to Adams the dynamo became a symbol of infinity. As he grew accustomed to the great gallery of machines, he began to feel the forty-foot dynamos
Although the imagery of the Dynamos is ambiguous in many ways, i feel the description Adams is using for a force of power within the Dynamos can be related to a train. When he speaks of the coal, dirty engine, and forty foot dynamos it reminds me of the power a coal powered train can attain. I feel the Dynamos almost encompasses the power and imagery of the male’s presence.