Even though the drilling and milling machine has been around for hundreds of years, the components are constantly evolving. Improvements are made to create a more efficient machine that produces more from less resources. A major improvement of the machinery was a change in process that gave it a reduced requirement for running water.
The first part of the drilling and milling machine, the hydraulic piston driven mechanism was developed by Frederick Dreyfus in 1834. This mechanism uses a lever to control the fluid into a closed cylinder. After the fluid is inside the cylinder, it continues to pump until the pressure of the fluid is equal to the amount of oil. The piston then opens the valve and permits the air to flow out of the cylinder.
While this was a very simple mechanism, it was extremely inefficient. Running water was needed to lubricate the piston. Any time the piston was not used, the water could not lubricate the piston. This system had a tendency to wear out the lubrication as well as produce a lot of noise. There were many machines built but none had the same efficiency as the Dreyfus design.
A better design was developed in the middle of the last century using an air jet pump. The air jet pump developed by W.A. Burns, Jr. uses a fan to rotate a shaft in a fashion similar to a propeller. The shaft transfers air from a tank attached to the machine through the fan shaft to the piston.
The use of the fan to transfer the air results in the excess pressure from the pump being eliminated from the machine. By working as a source of air instead of a means of taking air from the machine, the drilling and milling machine does not wear out as quickly. The smooth rotation of the fan also does not produce any vibration that could break the seal.
The plunger is the device that connects the fluid hoses. These hoses are located near the piston and air pump that allows the machine to be able to extract oil or other materials. An airport is attached to the machine and the plunger is connected to the line. The linings, valves and fittings are all made from metal or plastic that are resistant to wear and corrosion.
The linings of the hoses are also constructed with metal so they will last longer and do not become corroded. Unlike other models, the design of the drilling and milling machine does not produce any vibrations, which could damage the equipment.
The design of the drilling and milling machine is still in use today because it gives the machinery the flexibility that only metal can provide. Metal is not susceptible to heat or the effect of friction that can weaken or break the machine. Metal is a perfect material for creating a machine that is durable and reliable, but is also beautiful.