Thread chaser I think.???????

[Walt Davies]

I bought this at the auction on Saturday I think its a thread chaser but I not real sure I Old but not this Old.

"Butterfield & Co."
"Derby Line VT."

" NO. 32B"
Walt

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[Anonymous-0]

I have one just like that. Dad had it around the farm before I took over, 50 plus years ago. Use it once in a while for cleaning threads. Frank

 

[Anonymous-0]

Called a die plate. It cut several different diameters with the same threads per inch, I think. Depended on the original rod diameter and the squeeze on the pieces. One set probably could cut 6-32, 7-32, 8-32, 9-32, and 10-32. 7 and 9 have been forgotten in the last 50 years.

Gerald J.

 

[Gene Davis (Ga.)]

It is sommetimes called a "split die". I have one that has 5/8"-1-1/8" threads that my father used when he ran a dealership shop for John Deere. The farmers were bad about forgetting to grease the front wheel bearings and when the bearings tore up it often bruised the threads. I use it occasionally, but not sure whether they are even still made.

 

[Paul from MI]

They really don't cut threads, more or less form them on the outside of any size rod within the range of the tool. Each set of dies fits a range of rod sizes, with thread pitch becoming smaller with each smaller die set. There used to be a matching slightly tapered set of taps to make inside threads to match. With them a nut could be made to fit whatever thread was formed by running the tap in to a depth, or diameter to suit. My grandfather was a part time blacksmith and he had a complete set of them. I think one of my cousins ended up with them.
Paul

 

[Larry59]

When it downloaded. I was setting here thinking I had seen one like that some where. But could not remember what it was called or did. Thanks

 

[guido]

Hello Walt Davis
I have used a similar tool. It was for chasing threads for an axle housing nut.
Guido.