chinese lathe main screw clutch

hi
i have a chinese lathe and there's some systems that doesn't work well when you carry relatively heavy work ,the clutch is one .
i've found a solution based on scrap parts , my English is a little rusted so i put pictures ,the first is the molding of the bloc
Attachment 6751
here the casting raw

Attachment 6752
this is the parts that drives the added clutch shell
i' ve made a new nut in two parts , one moved by the original system one by the added system

Attachment 6754
unclutched position

Attachment 6755
clutched

Attachment 6756
finished work
i hope that will be usefull
cheers
nico

ok i've to add some détails to my post just to make the way clear .
Attachment 6757
so after casting the work begins by cutting around the blank
Attachment 6758
after milling the faces cut the slot ,bore the pignion place and the main screw hole
Attachment 6759
it will look like this now lets machine the front face
Attachment 6760
first step ,the square boss is for the clutch bar it will be rounded later
Attachment 6761
the boss rounded
Attachment 6762
the parts together just to see
Attachment 6763
the external nut with four small screws to adjust the play between the nut and the screw(the adjustment must be done before mouting the system on the lathe)
Attachment 6765
on the front face a bearing is set to guide the screw
Attachment 6766
the parts pré set
Attachment 6764
the bar that supports the added nut
that's all for the moment
if some want more infos please ask
cheers
nico

Thanks jetpack2013! We've added your Lathe Main Screw Clutch to our Lathes category, as well as to your builder page: jetpack2013's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/lathe-main-screw-clutch"><img src="http://www.homemadetools.net/uploads/137330/lathe-main-screw-clutch.jpeg" /></a></div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/lathe-main-screw-clutch">Lathe Main Screw Clutch</a> <span> by <a href="/builder/jetpack2013">jetpack2013</a></span> </div> <div class="tags">tags: <a href="http://www.homemadetools.net/tag/lathe">lathe</a>, <a href="http://www.homemadetools.net/tag/clutch">clutch</a></div> </div> </div> </div>