Do You Know What This Is?

Discussion in 'Hobbies & Crafts' started by Ina I. Wonder, Jun 25, 2017.

  1. Ina I. Wonder

    Ina I. Wonder Very Well-Known Member
    Registered

    Joined:
    Jan 28, 2015
    Messages:
    3,502
    Likes Received:
    5,660
    This has been taking up half of my hallway for the last more than 30 years, but I can't just chunk it, and I haven't been able to work with it for the last five or six years now. If you know what it is, and happen to come through Houston, I'll let it go for free. I just want it to go to someone that would enjoy using it.

    One person can work it, or as large a group up to 12 as you wish.



    IMG_4820.JPG IMG_4819.JPG
     
    #1
  2. Patsy Faye

    Patsy Faye Veteran Member
    Registered

    Joined:
    Nov 21, 2015
    Messages:
    9,337
    Likes Received:
    10,355
    Ooo - looks like some sort of torture thingy :eek:
    Don't know what it is, hope someone does :)
     
    #2
    Yvonne Smith and Ina I. Wonder like this.
  3. Holly Saunders

    Holly Saunders Veteran Member
    Registered

    Joined:
    Nov 16, 2015
    Messages:
    29,108
    Likes Received:
    8,703
    Is it some kind of tapestry Rug making thing....
     
    #3
    Yvonne Smith likes this.
  4. Holly Saunders

    Holly Saunders Veteran Member
    Registered

    Joined:
    Nov 16, 2015
    Messages:
    29,108
    Likes Received:
    8,703
  5. Ruby Begonia

    Ruby Begonia Very Well-Known Member
    Registered

    Joined:
    Nov 1, 2015
    Messages:
    3,049
    Likes Received:
    4,602
    Is it a loom?
     
    #5
  6. Yvonne Smith

    Yvonne Smith Greeter
    Moderator Registered

    Joined:
    Jan 21, 2015
    Messages:
    5,605
    Likes Received:
    8,287
    My guess is that it might be a frame for quilt-making ? If it is, and you want to give it away, you can check and see if there are any quilting groups in your area, and they would probably love to have it.
     
    #6
    Don Alaska and Gloria Mitchell like this.
  7. Patsy Faye

    Patsy Faye Veteran Member
    Registered

    Joined:
    Nov 21, 2015
    Messages:
    9,337
    Likes Received:
    10,355
    I thought it was a loom, but doesn't look quite right
     
    #7
  8. Denise Happyfeet

    Denise Happyfeet Very Well-Known Member
    Registered

    Joined:
    Sep 26, 2015
    Messages:
    3,216
    Likes Received:
    3,704
    Ina, I know what that is! It's a fat-reducer and that's how you stay so nice and thin;)
     
    #8
    Holly Saunders and Ina I. Wonder like this.
  9. Ina I. Wonder

    Ina I. Wonder Very Well-Known Member
    Registered

    Joined:
    Jan 28, 2015
    Messages:
    3,502
    Likes Received:
    5,660
    Wow, those were some good guesses. :) It is a quilting frame that lets you do quilts that will drape to the floor of a California king, or so small that the quilt will fit a crib. The really neat thing as you can see, is that it can be folded up and slid up against the wall in between the periods of working on the quilt. I've made quilts that took no time at all, and then there were times when I had to stop before I was through, and the quilt would be rolled up on the frame, then fold vertically to be set up next to a wall until I could get back to it.

    @Holly Saunders it is a good thing I have never seen that rug loom, I'd probably own it as well. Right now all I can keep up with is my 48" ridged heddle loom. :confused:

    @Yvonne Smith, every since we talked of this when I visited you, over two years ago now, I've taken your suggestions to try churches, and quilting groups, but no one is interested. People just do not do such craftwork anymore, not around here at least. :(
     
    #9
    Ted Richards and Holly Saunders like this.
  10. Gloria Mitchell

    Gloria Mitchell Very Well-Known Member
    Registered

    Joined:
    Mar 18, 2017
    Messages:
    1,742
    Likes Received:
    2,449
    My granda ma and hubbys mother made quilts...and they used this. to make them.
     
    #10
    Ted Richards and Ina I. Wonder like this.
  11. Yvonne Smith

    Yvonne Smith Greeter
    Moderator Registered

    Joined:
    Jan 21, 2015
    Messages:
    5,605
    Likes Received:
    8,287
    Some of them are selling for up to $500 on eBay; so maybe you should sell it instead of giving it away, @Ina I. Wonder . What brand is it, and I can look it up more accurately ?

    Here is one that looks similar to yours, and it is sold with pickup only, so no shipping. If you do not want to list it yourself, @Michelle Anderson does this professionally, and would probably be able to help you sell it on commission.

    https://www.ebay.com/itm/322560043836
     
    #11
    Last edited: Jun 25, 2017
  12. Ina I. Wonder

    Ina I. Wonder Very Well-Known Member
    Registered

    Joined:
    Jan 28, 2015
    Messages:
    3,502
    Likes Received:
    5,660
    Hi @Yvonne Smith, I still have the instructions, so here's the info.

    IMG_4825.JPG
     
    #12
    Holly Saunders likes this.
  13. Yvonne Smith

    Yvonne Smith Greeter
    Moderator Registered

    Joined:
    Jan 21, 2015
    Messages:
    5,605
    Likes Received:
    8,287
    That is the same brand as the picture I posted from ebay. There is a facebook group of quilter from the Clear Lake/Friendswood area, which would be near you. If you join the group, you can probably sell it to someone there, or at least they could give you an idea of who might be interested.
    Which quilting groups did you try already ? there are a few other quilting groups in Texas listed on Facebook.
    I messaged (facebook) the info to you that you need to join that group and another one near Killeen.
     
    #13
    Ina I. Wonder likes this.
  14. Ina I. Wonder

    Ina I. Wonder Very Well-Known Member
    Registered

    Joined:
    Jan 28, 2015
    Messages:
    3,502
    Likes Received:
    5,660
    Thanks Yvonne, I'll try a Facebook search. That might work. I went online to quilting groups, and just started calling or dropping a note to see if someone might be interested. I've had a couple people show interest, but they turned out to be resale shops, and as soon as they found out how long the frame is, they wanted "me" to place a deposit down claiming it was for the space it would take up, or that it may not only take up space, but it might take a long time to sell. :mad:

    I just want it to go to someone that would truly use it. I more than got my money out of it long ago. :rolleyes:
     
    #14
  15. Hal Pollner

    Hal Pollner Well-Known Member
    Registered

    Joined:
    Feb 11, 2018
    Messages:
    602
    Likes Received:
    477
    I am at a loss as to the purpose of that apparatus.....

    .....but do you know what THIS is?

    Hal
    254.JPG
     
    #15
    Frank Sanoica likes this.
  16. Don Alaska

    Don Alaska Very Well-Known Member
    Registered

    Joined:
    Mar 6, 2018
    Messages:
    831
    Likes Received:
    1,060
    A variant on a Van deGraaff generator perhaps?
     
    #16
    Frank Sanoica likes this.
  17. Frank Sanoica

    Frank Sanoica Very Well-Known Member
    Registered

    Joined:
    Feb 21, 2016
    Messages:
    4,965
    Likes Received:
    4,479
    @Don Alaska
    Almost. A modernized version of a Wimshurst static electric generator. Principle is thus: a large glass disc is spun by a hand-crank, "brushes" carrying away electrons which are "stored" in Capacitors called "Leyden Jars". Quite a high static charge can be achieved, enough to throw a pretty long spark.

    Those of us who have resided in quite cold climates, when humidity is low in Winter, will recall shuffling their feet over a carpet, and jumping when a spark is produced upon touching an object or person. Same principle.

    The Van deGraaff generator uses a moving endless belt having pulleys supporting it, like a vertical conveyor belt, to store static charge at it's top on a spherical metal surface.

    [​IMG]


    Much more to my liking is the Tesla Coil, of which I have built many.
    • [​IMG]


    Tesla Coils operate differently from Static machines in that they are alternating current devices. Some incredibly pretty "fire" can be produced by them. A person hit by the "flame" experiences no shock, yet the Corona Discharge as it is correctly called, can easily ignite a scrap of paper through which it passes. Various "tricks" may be performed, such as the holding of a Fluorescent lamp in one's hand, which illuminates mysteriously without any wires as the Coil is approached.
    Frank

    • [​IMG]
     
    #17
    Don Alaska likes this.
  18. Von Jones

    Von Jones Veteran Member
    Registered

    Joined:
    Jan 25, 2015
    Messages:
    3,417
    Likes Received:
    2,081
    Very interesting @Don Alaska and @Frank Sanoica. Out of curiosity I had to google Wimshurst static electric generator to find its purpose.
     
    #18
    Frank Sanoica likes this.
  19. Hal Pollner

    Hal Pollner Well-Known Member
    Registered

    Joined:
    Feb 11, 2018
    Messages:
    602
    Likes Received:
    477
    It's an Electrostatic Generator, but it's NOT a Van de Graaff machine.

    Hal
     
    #19
    Last edited: Apr 16, 2018
  20. Hal Pollner

    Hal Pollner Well-Known Member
    Registered

    Joined:
    Feb 11, 2018
    Messages:
    602
    Likes Received:
    477
    Frank and Don, you are both knowledgeable in the operation of these machines, which I admire!

    The one in the picture, which I designed and built, is a Bonetti Machine, and uses TWO 36" acrylic discs which are counter-rotating on a common shaft.

    Both the Wimshurst and the Bonetti machines were developed in the 1870's in Europe.

    Unlike the Wimshurst, which also uses 2 counter-rotating discs, the Bonetti uses no conductive foils and brushes to pick up the electrostatic charge, but uses metal combs which do not touch the discs. The charge is transferred by induction, and is stored in the 2 Leyden Jar capacitors until the voltage is high enough to break down the gap between the 2 copper spheres. I calculate that I'm generating over 250,000 volts with the gap as shown.

    The Wimshurst is self-generating, but my Bonetti has to be "primed" with the small Van de Graaff shown to get it producing!

    I also built a Van de Graaff with a 30" discharge sphere, but no longer use it, as the long arcs interfered with the household wiring, and kept tripping breakers, so I dismantled it and use the sphere as a garden ornament! It generated over 1 million volt discharges which were 4 to 5 feet long.

    Hal
    158.jpg
     
    #20
    Last edited: Apr 16, 2018
    Frank Sanoica and Don Alaska like this.
  21. Frank Sanoica

    Frank Sanoica Very Well-Known Member
    Registered

    Joined:
    Feb 21, 2016
    Messages:
    4,965
    Likes Received:
    4,479
    @Hal Pollner
    Fantastic! How you have whetted my appetite for H.V. apparatus, something I have needed, being away from such activity since I taught High School Math in '02-'03 in Missouri. I gave the Seniors the opportunity to earn extra credit by building a Tesla Coil, under my direction. Sadly, I have no pictures of it, but a short description is in order. One girl supplied the Primary Coil form, a porcelain flower pot about 14 inches in diameter. The Secondary was wound on some plastic tubing about 3" in diameter, of AWG 24 speaker wire. I mounted it on rollered supports, and those kids hand-wound a perfect coil about 4 feet long! Primary power was supplied by one of my old neon sign transformers, 15,000 volts. I wound two short #10 choke coils, placed them in series with the transformer secondary, to protect it. Spark gap was enclosed within a teflon cylinder I turned on my lathe, ends having threaded electrodes for adjustability.

    Capacitors. 20 or so green glass beer bottles! They jokingly said that beer was the REAL reason for my proposal, as I had to empty the bottles! Those stood, filled with salt water, in a plastic dish tub, also full of salt water. 3/16-inch copper rods, nutted to bottle caps, reached down into the liquid in the bottles. Tuning was achieved by switching in bottles using clipped connecting leads.

    Streamers produced were on the order of a foot long or more. Fluorescent ceiling lights close to the coil in operation flickered ominously. Hand-held 4-foot tube illuminated at near-normal intensity. The school staff was as freaked out by this as were the students who built it!

    I long to build another. Perhaps I will!
    Frank
     
    #21
  22. Hal Pollner

    Hal Pollner Well-Known Member
    Registered

    Joined:
    Feb 11, 2018
    Messages:
    602
    Likes Received:
    477
    Frank, after building my last Tesla Coil about 15 years ago, I realized that the primary voltage was dangerous, as the transformer produced 15,000 volts at a lethal current of 50 milliamps, which could kill me if the 15KV 60Hz current contacted my body! No more Tesla Coils!

    The spectacular secondary discharge was harmless, as it was at a high RF frequency, which flows over the skin, rather than penetrating the body.

    Here's a shot of my Wimshurst Machine, which produces a mild discharge of 75,000 volts at just a few microamps! (Note the 2 small balls behind the discs where the arc is formed.)

    Hal
    095.JPG
     

    Attached Files:

    • 095.JPG
      095.JPG
      File size:
      93.9 KB
      Views:
      0
    #22
  23. Frank Sanoica

    Frank Sanoica Very Well-Known Member
    Registered

    Joined:
    Feb 21, 2016
    Messages:
    4,965
    Likes Received:
    4,479
    Hal
    @Hal Pollner
    Beautiful machine you built there! Just yesterday, doing some snooping about Tesla Coils, I learned something most interesting, as well as disappointing. It had been stated since Day 1 that "skin-effect", the fact that high-voltage high-frequency charge exists only on the surface of a conducting body, thus explaining the fact that one feels no "shock". It's not true! While "current density" is highest on the surface, and decreases towards the center of the conductor, where it is zero, it has been determined that the real reason we don't feel it is that our nerve endings just aren't sensitive to A.C. exceeding about 20khz.

    "The high voltage radio frequency (RF) discharges from the output terminal of a Tesla coil pose a unique hazard not found in other high voltage equipment: when passed through the body they often do not cause the painful sensation and muscle contraction of electric shock, as lower frequency AC or DC currents do.[58][17][59][60] The nervous system is insensitive to currents with frequencies over 10 – 20 kHz".

    "If the arcs from the high voltage terminal strike the bare skin, they can cause deep-seated burns called RF burns.[64][65] This is often avoided by allowing the arcs to strike a piece of metal held in the hand, or a thimble on a finger, instead. The current passes from the metal into the person's hand through a wide enough surface area to avoid causing burns.[17] Often no sensation is felt, or just a warmth or tingling."

    "However this does not mean the current is harmless.[66] Even a small Tesla coil produces many times the electrical energy necessary to stop the heart, if the frequency happens to be low enough to cause ventricular fibrillation."

    "An erroneous explanation for the absence of electric shock that has persisted among Tesla coil hobbyists is that the high frequency currents travel through the body close to the surface, and thus do not penetrate to vital organs or nerves, due to an electromagnetic phenomenon called skin effect.[67][17][70][71]

    This theory is false.[72][73][74][58][68][75] RF current does tend to flow on the surface of conductors, but the depth to which it penetrates, called skin depth, depends on the resistivity and permittivity of the material as well as the frequency.[76][77] Although skin effect limits currents of Tesla coil frequencies to the outer fraction of a millimeter in metal conductors, the skin depth of the current in body tissue is much deeper due to its higher resistivity and lower permittivity. The depth of penetration of currents of Tesla frequency (0.1 - 1 MHz) in human tissues is roughly 24 to 72 cm (9 to 28 inches).[77][76][58] Thus skin effect has little influence on the path of the current through the body;[75] it takes the path of lowest electrical impedance to ground, and can easily pass through the core of the body.[78][58][77] In the medical therapy called longwave diathermy, RF current of Tesla frequencies was used for decades for deep tissue warming, including heating internal organs such as the lungs.[78][59] Modern shortwave diathermy machines use a higher frequency of 27 MHz, which would have a correspondingly smaller skin depth, yet these frequencies are still able to penetrate deep body tissues.[73]."

    See: https://en.wikipedia.org/wiki/Tesla_coil#Health_hazards

    So, I live (very fortunate, considering a life-long exposure to the hazards of electrocution), and learn! Frank
     
    #23
  24. Hal Pollner

    Hal Pollner Well-Known Member
    Registered

    Joined:
    Feb 11, 2018
    Messages:
    602
    Likes Received:
    477
    Frank, I will concede that you are the Authority in explaining the effects of different kinds of Electric Currents and their effects on the human body.

    (This photo shows the setup in my home lab for calibrating the Right Ascension drive in tracking telescopes.The earth turns on its axis at the rate of one revolution in 24 hours, or 15 degrees per hour, or 1/4 degree per minute. (15 seconds of arc) If the scope's tracking rate is not true, the image will drift in the eyepiece.)
    Hal
    225.JPG
     
    #24
    Frank Sanoica likes this.
  25. Ruby Begonia

    Ruby Begonia Very Well-Known Member
    Registered

    Joined:
    Nov 1, 2015
    Messages:
    3,049
    Likes Received:
    4,602
    It's a coffee maker!
     
    #25

Share This Page