m - HKU Libraries
m - HKU Libraries
m - HKU Libraries
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II. Trade Skill: Be competent in:<br />
1. Starting and stopping a comber,<br />
changing laps, piecing slivers or<br />
laps, doffing full cans.<br />
2. Cleaning the comber efficiently<br />
according to schedule.<br />
3. Taking corrective action, if the<br />
operation of cylinder needles,<br />
rollers and coilers are not in<br />
order.<br />
4. Differentiating between the markings<br />
on laps and cans of different<br />
counts.<br />
III. Skill Standard:<br />
"A" Grade Standard<br />
(a) Change 1 lap in 7 seconds.<br />
(b) Repair 1 break between front<br />
roller and calender roller in 10<br />
seconds.<br />
"B" Grade Standard<br />
(a) Change 1 lap in 8 seconds.<br />
(b) Repair 1 break between front<br />
roller and calender roller in 13<br />
seconds.<br />
"C" Grade Standard<br />
(a) Change 1 lap in 10 seconds.<br />
(b) Repair 1 break between front<br />
roller and calender roller in 16<br />
seconds.<br />
IV. Trade Tests:<br />
1. Change laps and piece slivers and<br />
laps perfectly within a certain<br />
time as specified in the Skill<br />
Standard. All piecmgs made<br />
should be clean and good.<br />
2. Clean a comber efficiently within<br />
a reasonable time.<br />
3. Answer questions satisfactorily<br />
on:<br />
(a) The dangerous parts and<br />
safety devices on a comber.<br />
(b) The purpose of combing.<br />
(c) The names of the main parts<br />
of a comber.<br />
(d) The effects of imperfect<br />
cleaning work on quality and<br />
machinery.
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