How can I utilize the power at the range and dryer for other appliances?
According to the National Electrical Code, receptacles on 40 amp circuits have to be rated for the circuit meaning they have to be 40 or 50 amp receptacles. Or you will have to hard wire your equipment with #8 wire and remove the range receptacle. Not very practical.

There are many options to power your equipment but tapping off of a range or dryer circuit is probably not as cost effective as just running new circuits for your equipment or using the range circuit to feed a sub-panel for your equipment.