Author Topic: Lever Locking Topslide  (Read 359 times)

Offline jackary

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Lever Locking Topslide
« on: November 24, 2023, 05:28:46 AM »
This is my Lever Locking Topslide on my modified Colchester Chipmaster cross slide ( I have added tee slots to it).
I have been using this for many years and find it an absolute boon. It enables the topslide to be positioned on the far side of the cross slide for easy screwcutting for example, as well as many other operations.
Alan


Offline hermetic

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Re: Lever Locking Topslide
« Reply #1 on: November 26, 2023, 07:28:46 AM »
That looks like a really excellent mod, very usefull!
Phil
Man who says it cannot be done should not disturb man doing it! https://www.youtube.com/user/philhermetic/videos?

Offline BillTodd

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Re: Lever Locking Topslide
« Reply #2 on: December 01, 2023, 08:01:41 AM »
Excellent.  I guess, a cam on the manual lever raising another lever pulling the stud up ??
Bill

Offline jackary

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Re: Lever Locking Topslide
« Reply #3 on: December 01, 2023, 12:08:04 PM »
Hi Bill, Its more involved that that. The lever operates a stirrup lever that locks the lower topslide to a central annulus with a 45 degree surface which pulls the disc upwards on a semi circular surface on the front of the lower slide. I t also pulls the lower face of the topslide into close solid contact with the cross slide surface and lifts the tee bars into contact with the underside of the tee slots.
The result is a very solid lock with a slight pressure from the locking lever. This is my own design I first made about 1976. I have written it up in the Model engineers workshop mag and tried to get people to adopt it because it works so well and changes the way the lathe can be operated. If you interested I can send a more detailed description.

« Last Edit: December 02, 2023, 05:03:02 AM by jackary »

Offline BillTodd

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Re: Lever Locking Topslide
« Reply #4 on: December 01, 2023, 01:26:46 PM »
Oh yes, that's neat  :headbang:
Bill

Offline jackary

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Re: Lever Locking Topslide
« Reply #5 on: December 02, 2023, 10:12:59 AM »
Here is an underside view of  the lower slide