What is it? Set 551

I need some help with 3217, 3219, and 3220 in this week's set:
formatting link

Larger images:
formatting link

Rob
Reply to
Rob H.
Loading thread data ...
No. 1 is some sort of telegraph mail-box, you spin the wheel and the rods move and make a noise/current/switch closure
No. 2 part of a plumber's spanner
No. 3 a shingle knife
No. 4 where they put everyopne too stupid to write properly in school
No. 5 is a microphone
No. 6 is some sort of acoustic demostration/experiment apparatus, you adjust the tension and free length, the holes in the box are to help it resonate.
Reply to
Stanley Daniel de Liver
3217: Must be a nail puller, eih? ;>)}
Reply to
Phil Kangas
Did we ever get the answers from last week?
Reply to
Stormin Mormon
I haven't looked, but given your track record, I would think you would be keeping a low profile about this (did you look?)
Reply to
Bill
Stormy, most newsreaders can display only the new posts, and most have filters to mark certain posters' messages for attention.
If it's so important, why not employ some of those tools?
As always, Rob gave the answers.
Lloyd
Reply to
Lloyd E. Sponenburgh
Could be! Someone else suggested it was pin puller. Thanks for the post!
Reply to
Rob H.
Posting from the usenet newsgroup rec.crafts.metalworking as always.
3217) Looks like a tool for pulling difficult to extract nails.
3218) A wire stripper -- for heavy gauge wires. Looks like it bolts down to a workbench, and it has small ratchet wrench as the operating lever -- with a knob added to the handle.
3219) It looks more like an operating lever which clamps onto a shaft (likely on a machine tool) instead of a tool in its own right.
3220) It looks to me to be an adaptor for something like a theodolite or transit to a tripod. Likely one which is rather more portable than most, based on how it folds up -- and on the relatively small size. (Unless that is a scaled-up quarter of reference. :-)
The three points receive three hollow cone adjustment points for setting the instrument properly level.
3221) Looks like something designed to grip the end of a leather strap. (the center bar would prevent it from being used to scrape a strap along its length, which otherwise might be be an option.
3222) Another interesting device.
My first guess (now rejected) was that it was for winding coils with a known number of turns.
Instead, it is something for applying a twist to something held between the two points, while one point is rotated a number of turns.
The dial tells both how many turns, and how far the vertical point has moved. The main beam is calibrated in 1/2" steps, and it looks like the dial represents 0.001" per division (not sure, with the 50-0-50 calibration, and difficult to get the gear ratio without a view which lets me count the teeth on each gear.
At a guess -- the screw in the bar is 20 TPI which would allow the 0-50 part to represent one turn of the screw and the crank.
Maybe it is for turning a really small drill bit, while feeding the workpiece into it, but it is difficult to see both how various sizes of drill bits could be held in the rotating part, and how various workpieces could be held in the vertical part.
Now to post and then see what others have suggested.
Enjoy, DoN.
Reply to
DoN. Nichols
It looks as though you got a previous set, not this week's set there, based on your descriptions. And the numbers are wrong for this set, which should be from 3217 to 3222, not 1 through 6.
Enjoy, DoN.
Reply to
DoN. Nichols
3220 Folding Trivet.
Reply to
G. Ross
3222 used to twist wire. The slide on the bar controls where the twisting starts to occur, and the holder on the top does the twisting. The counter keeps track of the number of twists put in. Nice little unit.
pretty good the last few weeks...
Reply to
woodchucker
Machine tool lever sounds like a good guess, but no luck yet finding a reference for it.
Well, I have a few answers posted for this set, still waiting on the others:
formatting link

Rob
Reply to
Rob H.
I have a tool like that but with a metal handle. It is used to hold an inside bore gauge to reach deep into a bored hole.
formatting link

John
Reply to
John
3221 -- Jar Opener?
Reply to
phorbin
Thanks, I'm not sure if both tools are for the same purpose but I'll pass your idea along to the owner.
Reply to
Rob H.
Rob, I don't believe that 3222 is a wire tester. There is no way that turning the wheel put's tension on the wire. It twists it. And the counter counts the number of turns.
Reply to
woodchucker
I think not. This one has a projecting point which tightens with the handle, and which goes into a dimple in the micrometer body (probably on the side away from us in the photo).
The one in the puzzle is clamped from the sides, with a stronger grip (not needed nor desired for a bore micrometer), and the heavy wood handle suggests a significant amount of operating force needed.
I still think that it is an operating lever for some machine tool.
Enjoy, DoN.
Reply to
DoN. Nichols
The vertical holder has a projection into a groove on the bar, where it engages a leadscrew on the same shaft as the handwheel. So, as you crank the handwheel, the vertical holder is moved either towards or away from the "headstock".
But what I *really* wonder about is whether the horizontal holder rotates with the geared screw in the top, or whether it remains stationary. Knowing that could help determine what it really does. If it does not rotate, then a wire strain gauge is likely. If it does, then either a self feeding drill assembly is a possibility -- or it could be a tool for straightening wire (twisting wire under tension tends to straighten it).
Enjoy, DoN.
Reply to
DoN. Nichols
Correct, the vertical part does indeed move back and forth when the handle is turned.
From what I remember it does not rotate but I just sent the owner an email asking about it, I'll post his answer here when he replies.
Reply to
Rob H.
There is nothing to indicate that the holder on the bar is screw driven. As a matter of fact quite the opposite. There is a knurled lock nu that indicates it's really stationary. So I don't believe it travels the rod... if it did why would it lock?
Reply to
woodchucker

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.