Offset hook, balanced center shed dobby apparatus

Details Offset hook, balanced center shed dobby apparatus Offset hook, balanced center shed dobby apparatus

1988-10-03

1990-08-21

Falik, Andrew M.

Textiles: weaving

Warp manipulation

Shedding

139 29, 139 65, D03C 106

Patent

active

049497600

ABSTRACT:
A dobby apparatus is provided for use with hand looms for automatically controlling the lifting sequence of a plurality of shaft assemblies in accordance with a predetermined weaving program. The dobby apparatus has a dobby operating drive mechanism connected to a dobby operating arm for pivoting the dobby operating arm downwardly from a neutral position and returning it to the neutral position during each dobby operating cycle. A plurality of dobby hook pairs are mounted in a transfer position when the dobby operating arm is in the neutral position. Each of the plurality of dobby hook pairs are connected to a different one of the plurality of shafts. A plurality of dobby hook positioner assemblies contact the dobby hook pairs to laterally transfer both of the dobby hooks in each of the pairs between capture positions in the dobby operating arm. A dobby program drive assembly in operative engagement with the dobby hook positioner assemblies controls lateral displacement of the dobby hook positioner assemblies in accordance with a predetermined weaving program. The dobby hooks of the plurality of dobby hook pairs each have two generally parallel sections connected by a terminal end and a hook portion extending from one of the parallel sections offset toward the other of the parallel sections and aligned directly beneath the parallel sections. Each of the dobby hooks are connected to one of the plurality of shafts from the terminal end.

REFERENCES:
patent: 2136064 (1938-11-01), Tandler et al.
patent: 2941551 (1960-06-01), Ballard
patent: 3669154 (1972-06-01), Horak
patent: 4291730 (1981-09-01), Kremer
Fannin, Handloom Weaving Technology, (1979), pp. 85, 88, 89, 91, 92.
Kinzer, Technologie der Handweberei, (1926) pp. 107, 108, 114, 116, 118, and 121 No Translation.

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