What is it?

This topic has 18 replies, 14 voices, and was last updated 15 October 2017 at 09:25 by Martin Connelly.

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11 October 2017 at 23:34 #321103
Bill Davies 2
Participant
@billdavies2
A friend sent a picture for me to identify. It's like a lathe dog but the wrong way round. The thread is on the vee side.

It has a countersunk hole on the other side. I guess it's some kind of clamp, but I've never seen anything like it.
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11 October 2017 at 23:34 #25552
Bill Davies 2
Participant
@billdavies2
11 October 2017 at 23:54 #321105
Neil Wyatt
Moderator
@neilwyatt
One of these :

**LINK**
11 October 2017 at 23:56 #321106
Neil Wyatt
Moderator
@neilwyatt
Actually it may be a nut splitter, a hardened wedge fits in the square hole.
12 October 2017 at 02:19 #321108
“Bill Hancox”
Participant
@billhancox
Appears to be a pipe hanger
12 October 2017 at 08:12 #321112
Simon Williams 3
Participant
@simonwilliams3
If it were stainless, it would possibly be a clamp off the regulator for a diving bottle. But it looks like its cast or malleable iron. So the tensile strength isn't huge. Still, my bet's on something along those lines
12 October 2017 at 08:31 #321116
john carruthers
Participant
@johncarruthers46255
Nutcracker?
12 October 2017 at 09:22 #321121
Bill Davies 2
Participant
@billdavies2
I like the nutcracker! and Neil's nut splitter. I had wondered if it was half of an old scaffolding connector, the type to allow for angle between the tube, but it's nothing like the 'modern' split pattern. Bill's hanger and Simon's clamp of a pressurised bottle seem plausible, too.

It looks like a double start thread, if it is, then faster locking would be more important than applied force.
12 October 2017 at 09:26 #321122
Bill Davies 2
Participant
@billdavies2
I note, too, that the range of travel of the thread looks like the entire space inside the ring. So perhaps not a dedicated item. I discounted a puller due to the radius opposing the thread and the hole, and various other reasons.
12 October 2017 at 09:59 #321129
JasonB
Moderator
@jasonb
Is the small hole theaded or plain?
12 October 2017 at 16:37 #321188
Colin Heseltine
Participant
@colinheseltine48622
As a diver there is no way on this earth I would have that as a clamp on a first stage and I'm certain that is not its function. I would go for a nut cracker. Again it is not strong enough to use as a splitter for metal nuts.

Colin
12 October 2017 at 17:25 #321193
Rik Shaw
Participant
@rikshaw
Scarfing clamp for gluing rods together to make gunwales for small boats and fishing net mouths – for instance.

Rik
12 October 2017 at 18:00 #321198
Mike
Participant
@mike89748
Another vote for a nutcracker. Google for "screw-type nutcracker" and you will find many variations on this theme. Or build your own with instruction at http://www.instructables.com/id/Over-Engineered-Nutcracker/
12 October 2017 at 18:54 #321205
Alan Vos
Participant
@alanvos39612
Looks like a multi-start thread, If so, speed of operation was a consideration.
12 October 2017 at 19:00 #321207
Bill Davies 2
Participant
@billdavies2
I took Mike's advice to Google and found some which similar, although nothing identical. There would appear to be a pad or (on some designs) a handle that makes use of the hole. My friend says he's been told it's a pecan nut cracker. I've never cracked those, so I don't know why it would be specific for this nut.

Many thanks, all.
14 October 2017 at 04:18 #321389
Tony Dimnick
Participant
@tonydimnick84271
Posted by Neil Wyatt on 11/10/2017 23:56:10:

Actually it may be a nut splitter, a hardened wedge fits in the square hole.

I guess so too.
14 October 2017 at 07:12 #321391
MW
Participant
@mw27036
It looks a bit too big to be a nutcracker to me. You could almost pass a coconut through that opening
14 October 2017 at 07:28 #321393
not done it yet
Participant
@notdoneityet
I think it may be a controlled cushing device, such as using a couple plates,with grain between, for preparation of samples for early moisture testers, or for compacting those ground samples into a standard sized pellet for use in the testing instrument. Early machines were far better than the farmer collecting a few grains and biting them between his/teeth as a test for readiness for combine harvesting.
15 October 2017 at 09:25 #321525
Martin Connelly
Participant
@martinconnelly55370
Maybe a parallel pin pusher for removing or refitting them without banging a parallel pin punch against the pin.

Martin C
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