SUPPORT FOR SPADE Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: support has flat base with fastener for shoes and bracket rigidly secured on it at obtuse to its plane and shifted to the left relative to its axis of symmetry. Bracket is provided with stop made in form of half-ring and longitudinal stop which receives cross-piece engageable with lower ends of levers mounted on the axle. Upper ends of levers are linked with axle carrying the bearing roller. Pivot shaft of levers is located in the guide rigidly connected with bracket and located at right angle relative to the slot axis. EFFECT: enhanbced reliability. 5 dwg