Main lever for a rotary dobby operating at high speed

Details Main lever for a rotary dobby operating at high speed Main lever for a rotary dobby operating at high speed

1990-04-12

1991-09-03

Falik, Andrew M.

Textiles: weaving

Warp manipulation

Shedding

74 42, 74519, D03D 100

Patent

active

050444077

ABSTRACT:
A main lever for a high-speed rotary dobby having two opposing sidepieces in which two corresponding opposing frusto-conically flared holes are formed in each side piece by pressing or milling for a removable main pin for coupling the lever to the dobby crank arm. Two inner annular recesses concentric with the holes are also formed for housing a bearing of increased axial length. The sidepieces are joined together without welding by a special annular spacer hub acting as the fulcrum for the lever and, at the free end of the curved guide for the slider which adjusts the travel of the heddle frames, by a spacing and vibration-damping block. The slider passes between the two sidepieces in the curved guide zone and is locked in position by a special locking device. Lever modifications and special reinforcements are also provided.

REFERENCES:
patent: 3958608 (1976-05-01), Rohr
patent: 4770584 (1988-09-01), Vinciguerra

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