The pulsation pattern of the liners and the operating parameters of the pulsator affect the health of the cows’ udders and the quality of the milk produced. Quarter milking clusters are rarely used in cowsheds. Their use allows for individual control of the teatcups during milking, which helps, among other things, to reduce the negative effects of empty quarters in cows’ udders. This study provides an overview of quarter milking clusters, both prototypes and those in mass production. Older designs (up to the 1990s) were based on mechanical and electrical components, whilst the main function of the quarter milking system was the individual removal of milking cups. In the 21st century, mass-produced quarter milking cluster appeared on the market, and in selected academic centres, prototypes of modern quarter milking clusters were developed. The quarter milking cluster with thermal milk flow indicators, developed at the Department of Biosystems Engineering at the Poznań University of Life Sciences, was the only design described and was the subject of scientific research. The main aim of this research was to optimise the operating parameters of the quarter pulsator and to evaluate the functionality of the thermal milk flow indicators fitted to the teatcups. Further research in cowsheds using quarter milking clusters requires the development of an effective method for mounting sensors on the teatcups or the development of a measurement module to be fitted inside the claw.