Thaum xaws, lub tshuab xaws ua lub tshuab rau kev xa tawm, rov qab cov koob xov thiab zawm lub plooj hauv txheej txheem ntawm kev tsim cov plooj. Feem ntau tuaj yeem muab faib ua cov hauv qab no:
1. Cam xov take-up mechanism: ib tug mechanism uas tsav cov xov coj-up lever mus los ntawm ib tug cam
2. Txuas pas nrig xov take-up mechanism: ib tug mechanism uas tsav lub zog ntawm cov xov take-up mechanism los ntawm ib tug plaub-bar linkage mechanism
3. Slide bar xov take-up mechanism: ib tug mechanism uas tsav lub zog ntawm cov xov take-up mechanism los ntawm lub crank-slide bar mechanism
4. Rotary xov take-up mechanism: ib tug mechanism uas siv ib tug los yog ob discs los yog lwm yam zoo li tus Cheebtsam nruab nrog thread-take-up pins ua ib tug xov-take-up tsab ntawv tsa suab nrog ib tug rotary tsab ntawv tsa suab.
5. Needle bar xov take-up mechanism: ib tug mechanism uas kho cov xov-dhau los yog xov-clamping ntaus ntawv nyob rau hauv lub koob bar, los yog ncaj qha kho cov xov coj-up lever ntsia ntawm lub koob bar.
