| 摘要 |
491,547. Heald - levelling devices. ROTTON, W. S., and PATERSON, J. D. April 30, 1937, No. 12307. [Class 142 (i)] In heald-levelling devices for Leeming and other dobbies, a levelling bar c journalled in brackets can be turned by operating a handle lever from a position wherein it acts as a stop on which the lowered bowl levers rest to a position wherein it raises these levers, a second levelling bar d connected by lever mechanism to the first being similarly operated. At the same time, a finger h on the bar d is moved into the path of projections i<1>, i<2> on a disc i on a gear wheel in the train of gears by which and a hand wheel the dobby can be turned over when the power drive is disconnected. The abutments prevent the dobby being thus turned over, when the heald-levelling means have been operated. Furthermore, a short arm m on the bar d is connected to a slotted rod n receiving a pin on the usual clutch fork p on a vertical shaft driving the dobby. This rod prevents movement of the clutch to restart the dobby until the heald-levelling means have been moved into inoperative position. A modification is described wherein only one levelling bar is used. |
