Eureka relieving tool

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Subject Author Date
Eureka relieving tool petercolman45 07-06-2008
Posted by on July 6, 2008, 2:55 pm
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Hi All
I am thinking ogf making a Eureka Relieving tool for machining gear
cutters to the Ivan Law design, I have a copy of the drawing. Have any
of you made and used one of these and are there any instructions or an
original article I can borrow to copy, Thanks
Peter

Posted by Alan Bain on July 6, 2008, 5:41 pm
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>Hi All
>I am thinking ogf making a Eureka Relieving tool for machining gear
>cutters to the Ivan Law design, I have a copy of the drawing. Have any
>of you made and used one of these and are there any instructions or an
>original article I can borrow to copy, Thanks

The website
http://www.csparks.com/VanDervoort/index.xhtml

http://www.csparks.com/watchmaking/Balzar.jpg

shows a description of the original tool and mentions that.
Lindsay Publications printed a description in "Tool Making 1905".

Alan



Posted by John S on July 6, 2008, 8:03 pm
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On 6 Jul, 19:55, petercolma...@hotmail.com wrote:
> Hi All
> I am thinking ogf making a Eureka Relieving tool for machining gear
> cutters to the Ivan Law design, I have a copy of the drawing. Have any
> of you made and used one of these and are there any instructions or an
> original article I can borrow to copy, Thanks
> Peter

I have built one but scaled mine up x 2 so it would hold 1" bore
cutters.
Used the words and music from the Ivan Law book, gears and gear
cutting, it's at the back.

Ironically I have used it quite a lot but never done any gear cutters
on it. All my cutters were special form cutters but same principle.
They are not hard to make but they are hard to visualise how they
work, until you see one working it's a bit of a dark art.

Crap movie here.

http://www.stevenson-engineers.co.uk/files/eureka.mpg

John S.

Posted by 1501 on July 7, 2008, 6:44 am
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>
> Crap movie here.
>
Agreed: But still good enough to make the idea understandable.


Posted by on July 7, 2008, 8:07 am
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> On 6 Jul, 19:55, petercolma...@hotmail.com wrote:
>
> > Hi All
> > I am thinking ogf making a Eureka Relieving tool for machining gear
> > cutters to the Ivan Law design, I have a copy of the drawing. Have any
> > of you made and used one of these and are there any instructions or an
> > original article I can borrow to copy, Thanks
> > Peter
>
> I have built one but scaled mine up x 2 so it would hold 1" bore
> cutters.
> Used the words and music from the Ivan Law book, gears and gear
> cutting, it's at the back.
>
> Ironically I have used it quite a lot but never done any gear cutters
> on it. All my cutters were special form cutters but same principle.
> They are not hard to make but they are hard to visualise how they
> work, until you see one working it's a bit of a dark art.
>
> Crap movie here.
>
> http://www.stevenson-engineers.co.uk/files/eureka.mpg
>
> John S.

Thanks John

Is all the dope I need in Laws book?

Peter

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