Combine machines for mechanical tea harvesting in Soviet Georgia, early 70s: same as those for grain crops, combine harvesters are machines  that combine separate operations (depending on the type of crop) into a single harvesting process. According to Novosti news agency’s 1975 yearbook, the combine harvester for tea would be an invention of «Soviet engineers».

(photo: © 1975 Novosti news agency, Moscow – personal collection)