As viscosity changes the quality of the animal oil paintings applied paint will change, and to provide optimum results a variety of paint characteristics need to be known which are not available with conventional paint circulation systems.Yet another object of the invention is to provide a paint circulation system employing a circulation pump wherein makeup paint is injected into the circulation system by a positive displacement pump driven by a signal analyzing electric motor which provides outputs pertaining to paint volume being utilized, paint viscosity and bearing wear characteristics of the circulating pump.
Paint circulation systems are basically "closed" wherein the paint circulates in a loop, and it is necessary to add paint to the loop to replace that ejected from the nozzles. The circlation of the paint is at a high rate and the paint will be cycled many times if usage is low. Problems have been experienced with existing paint abstract oil paintings circulation systems with respect to paint particles settling within the network conduits, and degradation of the paint occurs during extended circulation, including the degradation of metallic flakes and the like which may be added to the paint for aesthetic purposes. Additionally, existing paint circulation systems do not permit a ready indication of the volume of paint being used, nor indicate the viscosity of the paint.
Yet an additional object of the invention is to landscape oil paintings provide a circulating paint system having a plurality of dead-end drops wherein an oscillating reservoir is employed at the terminating end of the dead-end drop sensitive to pressure fluctuations within the circulating system to vary its volume and serve as a surge suppressor and thereby produce an oscillating paint movement within the dead-end drop to provide sufficient agitation to minimize the settling of paint particles.
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