Brother B830 Series User Manual

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[I] UPPER SHAFT AND NEEDLE BAR MECHANISM
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I When pulley 0 t urns m the arrow d1rect1on. Its rotatmg motion IS conveyed to upper shaft f) to turn counter we1ght 0 .
2 The motion 1S conveyed to needle bar crank rod 8 v1a needle bar crank O wh1ch 1s connected to counter we1ght 0 The
shape
of arc motion 1s conveyed to th e thread hole 1n thread tak e-up lever ~ v1a thread take-up lever sl1de block 0
wh1ch 1s connec ted to need le bar crank rod 0
3 Needle bar 0 moves up and down v1a needle bar clamp 0 wh1ch IS connected to needle bar crank rod 0
4 Needle bar 0 IS gu1ded by needle bar support 0
(The arc motion 1s conveyed to the thread hole m thread take- up lever ~ v1a thread take- up lever slide block 0 wh1ch 1s
connec ted to needle bar crank rod 0 l
[I) NEEDLE FEED MECHANISM
When pulley 0 t urns 1n the arrow d1rect10n. ItS rotating motion IS conveyed to upper shaft f) to t urn t1m1ng belt wheel
upper 0
2 The mouon IS conveyed to t1m1ng belt wheel l ower 0 v1a tlmmg belt 0
3 Eccent r1c whee l 0 wh1ch 1s connec ted to lower shaft 0 rotates v 1a t1m1ng belt w he el lower 0 and lower shaft 0
4 Level feed arm ~ moves m the shape ol arc v 1a eccen triC wheel 0 . level feed connectmg rod 0 and level feed
connec tmg link O.
5 The moti on IS conveyed to needle bar rock crank 41) VIa feed ro ck s haft m.
6 Needle bar su pport G) mo ves back and forth VIa needle bar rock lmk m and needle bar connec ting rod 4D
7 Needle bar fD wh1ch IS connec ted to needle bar s upp ort G) moves back and forth .
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From the library of: Superior Sewing Machine & Supply LLC

Brother B830 Series Specifications

General

Brand	Brother
Model	B830 Series
Category	Sewing Machine
Language	English