Let's Play, Name That Machine!

[Tuckerfan]

Okay, my boss bought an old parts store and is planning on liquidating most of the inventory. In the basement, where they used to have a machine shop are a couple of machines. I've got no idea of what they are, and we kind of need to know, since he wants to get rid of them. Sorry for the crappy pictures, but I can get better ones if they're needed.

http://i28.photobucket.com/albums/c2...fan/IMG_69.jpg

http://i28.photobucket.com/albums/c2...fan/IMG_68.jpg

[J Tiers]

Dunno about second, wish I had a pic not from straight-on of the first one..... that included the arm or whatever that seems to extend up.

If I had to guess only from this pic, I'd say a foot-operated brake shoe riveter.


[This message has been edited by J Tiers (edited 01-10-2006).]

[vmil3]

The first pic looks like a foot operated riveter. In the "old days" used for anchoring the brake linings to the metal shoe. I need a better pic of the second machine.

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Doug

[Doc Nickel]

Isn't the second one (#68) for grooving motor comms?

The second one looks like something for punching or riveting. Perhaps riveting brake linings?

Just guesses.
Doc.

[PTSideshow]

First one does look like a shoe riveter, and the second one probably is a armature lathe, refinishing the copper segments on the old style starter motors commutators, that is due to the number of holes in the facing dial and holes to hold the armature steady while the tool bit is passed along the copper segment.

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Glen
Been there, probally broke it doing that

[johnc]

The second machine is a piston knurler. The chuck on the right grabs the piston by the ring lands and there is a ram, usually pnuematic, that pushes a knurling wheel on the piston skirt. Under the ram there is a roller that supports the inside of the skirt. I've used one very similar and believe it was a Van Norman but it's been a few years.
I agree with the earlier posts on the first machine being a brake shoe riveter.

[This message has been edited by johnc (edited 01-10-2006).]

[Gary Reif]

The second machine is a Perfect Circle piston knurlizing machine. That was one of the first machines I used at my new job at a NAPA machine shop back in 1973. Worked there for 25 years used several old engine rebuilding machines. The knurling wheel left an imprint with the letters PC showing in the knurl. I think the one I used is still setting in that shop.

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[Fasttrack]

I'm sure this is a stupid question for all of you seasoned veterans of machining, but i ask you to excuse my ignorance. When/why would one knurl a piston?

[Tinkerer]

Knurling a piston raised material so the piston could be resized to fit the cylinder. If I remember correctly.

[larry_g]

FAst
Tinker is correct. Knurling the piston skirt would make it larger allowing the piston to be reused in a corrected bore.
lg
no neat sig line