What is it? Set 373

Those are great, I added the first one to the site.

Thanks, Rob

Reply to
Rob H.
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What trumpet player inhales through it? The PSI would be a function between the relative sizes of the two ports. On any of Rob's posts we could always surmise that a piece is missing to make our guesses 'work'.

R
Reply to
RicodJour

Sounds reasonable, I'll add this to my list of possible answers. I think this one is going to hard to nail down, not really expecting to get a final answer for it.

Rob

Reply to
Rob H.
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Shielding -- keep the signal inside -- or keep an external signal from getting in.

Commonly supplied in colored pairs, as they are commonly used for speaker outputs on amplifiers. You can buy them all in one color, or in mounted pairs or whatever, but the most readily available are in red/black pairs. Aside from the red and black, in good quality ones, such as those by Greyhill, I also have some green and blue ones.

Here is what Graywhill's binding posts look like:

note that tehy come either with individual panel insulators, or ones which hold two at the standard 3/4" spacing. (For that matter, I know that they at least once had triangular patterns of three as well. Downloading the data sheet, I no longer see the triangular three post base insulator. But these were perhaps twenty years ago. :-)

From other makers, I have also seen yellow and white ones.

Others, once made by General Radio, were available in three colors -- red, black, and bare metal. The latter was used as a ground, the black was often right next to it with a sliding link to allow grounding it or not at need, and the third was red, which was the hot side.

But these look like the poor quality ones which were once sold by Radio Shack -- and those would have been sold with the assumption that they would be used as speaker terminals, thus the red and black pairs. Radio Shack also offers (at least on their web site) some better quality ones as well.

I just went searching on Radio Shack's web page, and found this (among others):

These look very much like the ones which were in the device under discussion. They are sold in packs of two pairs -- two red and two black.

Perhaps to even out clumping? Was there no carbon powder in contact with the rods?

Note that carbon granule microphones in use tended to clump, and had to be bumped to break up the clumps. Think of the old telephones (which used carbon granule microphones), and how occasionally they would produce weak sound. If you bumped the microphone end of the handset against a table it would break up the clumping and improve the sound level.

Could be -- or if it was unique -- or one of only a few, the distinctive color pattern could explain what it was to those who were presumed to need to know. :-)

A complete copper shield does not have to be grounded to block RF. It can be advantageous to ground it if you want to control buildup of static voltages, of course.

Or -- it could be that there was a connection from the black binding post to the copper case -- which would serve as the requested reason for the two colors.

Enjoy, DoN.

Reply to
DoN. Nichols

"Rob H." wrote in news: snipped-for-privacy@news7.newsguy.com:

2152 sure looks like it could be used for splitting logs. Go back and look at the videos you had links to a few weeks back. There was a cone shaped spindle that a guy was feeding logs into that would split the logs as it screwed in. Looked kinda dangerous if I remember correctly...

Larry

Reply to
Larry

2153 is a church candle lighter upper and putter outer

They don't have electric lights? :)

Steve R.

Reply to
Steve

If anyone happens to have the book "Mikatin" by Juha Vartiainen, item number

371 in it is this cigar holder. The title on the cover is actually "M?katin", it's an excellent 'what is it?' book from Finland, but hard to find in the U.S. The photo in the book makes the holder look a little different than the one on my site, in the book the black stem looks long and thin, about 1/4" diameter, with a small round hole in the end, similar to what you might find in a pipe mouthpiece.

The shadow on the photo on my site makes the stem look thicker, and wider at the end. I can't post the photo in the book because of copyright issues, but I'm sure that most people who saw it would agree that the small hole in the mouthpiece would work well for smoking a cigar with this holder.

Rob

Reply to
Rob H.

A couple of questions:

Have tesla coils ever been manufactured commercially / in volume?

Would someone bother to make such a nice case for a one off tesla coil?

Reply to
Dennis

I would tend to doubt it, particularly if your definition of volume was more than a few dozen.

I doubt it. But you're making quite a jump from "commercially in volume" to "one off". For a small unit like that I'd imagine it was used in scientific demonstrations in school settings, and inventor/ research labs. And maybe guys who were working on the development of their Ming The Merciless Death Ray. In portable form. ;)

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Cases like the one pictured were the equivalent of a blow-molded case today. Now they're considered really good cases and of exceptional quality, but back then they made them for everything.

Anyway, the Tesla coil was a guess, and I don't see how it could be verified without actually having a picture of one with the coil inside it.

R
Reply to
RicodJour

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People make nice one-off furniture. ;-)

Reply to
krw

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But you have to chose the people VERY carefully, and examine them closely for defects if you want nice furniture! ;-)

Reply to
Michael A. Terrell

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**IT'S PEOPLE!!!!**
Reply to
krw

Is PSI pressure? Pressure would be atmospheric pressure minus losses from restrictions. Those losses would vary according to flow. The losses of drawing a puff of smoke through a cigar and through a wire-sized orifice are likely to be small.

I put my finger over the little end of my trumpet mouthpiece, put my lips into it, and puffed in, moving my finger enough to let air leak with resistance. It worked fine. If I smoked a whole cigar that way, I might need to wipe away a ring around my lips.

Reply to
J Burns

:Xns9E7AB3DBA5FD3lloydspmindspringcom@216.168.3.70...

It was fabricated by someone comfortable with soldering irons...

Possibly one is not insulated from the case, that'd be the 'black' one.

The powder makes a better connection to the electrodes and keeps the assembly from breaking connection.

I'm guessing this was a dump resistor to make a HV capacitor safe; when working on HV electronics, it's common to use a shorting chain on a long wood pole as the final step before getting your hands into the works for maintenance, but sparks are annoying (and molten chain bits have to be chiseled off the insulators...) so there's usually a slow discharge resistor. I've seen long vinyl hoses filled with slightly conductive buffer solutions, with multikilovolt power capacitors. The likely voltage range for this construction is ~1kV or less. Calibration and stability aren't important in this use, but heavy conductors and failsafe conductivity are.

Reply to
whit3rd

The proportions are all wrong for any practical Tesla coil I've ever seen pix of. The post is too skinny, and what's with the big top hat?

Thanks, Rich

Reply to
Rich Grise

With a trumpet mouthpiece, I have found it easy to suck air against resistance with my lips in rather than around a mouthpiece.

45,215 (1864) is an earlier patent. It has no bulb to collect liquids. It has a place for a piece of sponge soaked in camphor, a sort of menthol filter.

Your patent says one advantage is that because the smoke is drawn from near the burning tip, the rest of the cigar is not spoiled if you decide to save it.

I think that's the big advantage of the mystery item. In addition, the large tube would cool the smoke. Any condensate could easily be wiped out of a tube that large, long before there was enough to run. So who needs a bulb or a sponge?

Reply to
J Burns

I seriously doubt if any real smoker would even consider such a thing. One of the most important, but most overlooked (or ignored) aspects of smoking anything is, it's something to stick in your mouth. :-)

Hope This Helps! Rich

Reply to
Rich Grise

Rich, The proportions don't seem too far from:

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Reply to
Kerry Montgomery

Oh. OK, I shouldn't have been so cocksure here. Especially now that I've seen one that it _could_ fit. :-)

But I wonder if anybody knows for sure yet?

Thanks! Rich

Reply to
Rich Grise

It's the 19th Century. You walk into a political caucus. The absence of footprints in the fresh snow has told you that nobody has stepped out for fresh air because it's very cold and nobody wants members to suffer frostbite.

A boss spots your case, rushes over, slaps you on the back, and invites you to the smoke-filled room in back. As he leads you across the floor, others join you. Your reputation has preceded you.

You set up your invention and they stand in a circle gushing praise. They agree that you will be the next President of the United States. They don't shake hands but are definitely relieved to conclude their business.

Reply to
J Burns

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