AGROBRIDGE Russian patent published in 1996 - IPC

FIELD: agriculture. SUBSTANCE: device has cover reinforced by radial and circular threads of elastic cable. Secured on cable are rings to suspend cover from auxiliary rods. Secured on central support pedestal by means of brackets is tube in form of ring with longitudinal slot fixing the holders of cover inner edge. Holders are installed for movement along slot. Rod has eye on one end for connecting with trucks and spring-loaded catch on other end to hold rings of cover suspension fitted on rod. Trucks can move both along constant spiral track cultivating spiral bed by means of detachable tools and along circular tracks when stretching or folding up the cover. EFFECT: possibility of quickly covering the plants in case of nocturnal frosts, carrying out agricultural jobs earlier and do it under cover with heating of localized air. 5 cl, 14 dwg