DOBBY FOR LOOM Russian patent published in 1997 - IPC

FIELD: textile industry. SUBSTANCE: loom dobby has crank drives according to number of hardness. Crank of each drive has wedge retainer engageable with main shaft and kinematically connected with levers located on opposite sides of crank and spring-loaded towards each other. Those levers are kinematically connected with program mechanism. Each drive has oscillating mechanism for equalizing speed of crank with that of main shaft with change of harness moving character. Main shaft is installed for rotation at invariable angular velocity. Oscillating mechanism has gear and yoke-cam pairs and additional shaft parallel to main shaft. Gear of gear pair is freely mounted on crank and has slots for wedge retainer on internal cylindrical surface, and wheel of gear pair and yoke are attached to additional shaft. EFFECT: higher efficiency. 5 cl, 10 dwg