cobbledstones
spending too much on rocks
Member since January 2014
Posts: 482
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Post by cobbledstones on Mar 25, 2015 9:13:07 GMT -5
Late to the party, but I think it looks like a homemade preforming device to make round cabs. Place cutout slab between the 2 round 'pads', set the depth with the screw fixture and place in front of a wheel. Needs a spring or something to keep pressure on the grinding wheel. Motor turns the preform slowly, wheel eats the high spots till the prescribed diameter is reached. Really similar in concept to, but much more crude than...a rose engine.
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Post by gingerkid on Mar 25, 2015 11:13:29 GMT -5
Tommy, I looked around on the internet earlier and wondered if it might be some type of punch press such as a tablet/pill making machine or something?
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Mar 25, 2015 13:38:29 GMT -5
I wonder if inventor wasn't trying to make a round cab preform lathe. Perfectly round and the flip is for polish. Imagine a sorta round preform placed between the two aluminum disks, then clamped in place. Turn it on and using sandpapers rough, medium and fine grind the edge, then flip it to polish. Remove perfectly round cab, then is cabbed normally on regular machines. TommyCrap, cobbled stones beat me to it!
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Post by MrP on Mar 26, 2015 16:39:08 GMT -5
I can't believe you people have not figured out what it is. Anybody can plainly see it is a..............................
..........................What was the question?.......................................................MrP
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Post by gingerkid on Mar 27, 2015 13:56:06 GMT -5
Mystery machine has arrived! Rick is not scheduled to work this weekend so we should have lots of time to 'play' with it.
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Post by gingerkid on Mar 27, 2015 14:03:11 GMT -5
Thank You Very Much, Tommy, for the 'extra padding'!!
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Post by jakesrocks on Mar 27, 2015 14:58:54 GMT -5
Need pics of the experiments Jan.
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Post by snowmom on Mar 29, 2015 6:59:18 GMT -5
watching with interest gingerkid Jan!
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Post by gingerkid on Mar 29, 2015 9:58:48 GMT -5
jakesrocks, I will post pics. I want to try and give it a good scrubbing today. There are not any serial numbers on the machine that we can find. We believe Cowboy orrum may be right on his first guess about Tommy's mystery machine, and that it may be an unfinished project or there are parts missing. Rick thinks the machine may have been mounted vertically. ...I think it looks like a homemade preforming device to make round cabs. Place cutout slab between the 2 round 'pads', set the depth with the screw fixture and place in front of a wheel. Needs a spring or something to keep pressure on the grinding wheel. Motor turns the preform slowly, wheel eats the high spots till the prescribed diameter is reached. Really similar in concept to, but much more crude than...a rose engine. We also agree with cobbledstones that it was probably used as a homemade preforming device where you could place a slab with an 1 1/2" diameter between the 'cams' and set the depth with the screw fixture and place cams in front of a grinding wheel. You could also make round cabs without the cams. It could be modified to make different shapes with different cams. If there was a missing tension spring it may have been used to keep it against the grinding wheel. When we purchased my used Graves CabMate, the lady I purchased it from sent me the Graves preformer with the motor, dop, bracket to mount to the machine, and a couple of cams. The preformer can be attached to most cabbing and faceting machines. We purchased a spindle and cam set since she misplaced them. I haven't used the preformer. I think it may be missing the parts that hold the cab. Graves CabMate preformer with spool attachment Link to Graves Company's preformer attached to faceting machine and CabMate: www.gravescompany.com/preforme.htmI wonder if inventor wasn't trying to make a round cab preform lathe. Perfectly round and the flip is for polish. Imagine a sorta round preform placed between the two aluminum disks, then clamped in place. Turn it on and using sandpapers rough, medium and fine grind the edge, then flip it to polish. Remove perfectly round cab, then is cabbed normally on regular machines.We may try your experiment, @shotgunner, but we may have to figure out how to get water to the cab so we don't have to get the daylights shocked out of us, lol.
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Post by gingerkid on Mar 29, 2015 12:03:14 GMT -5
Rick corrected me on calling the silver recessed round pieces, "cams." He said they might be called 'guides,' but they were not cams.
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Post by gingerkid on Apr 1, 2015 18:01:23 GMT -5
Here's some pics I took of Tommy's mystery machine. After having a bath Test subject slab of about 4.9mm thick used to see if the 'guides' would hold it when placed on each of shafts Shafts do not open very wide when knob is turned all the way out Knob that extends/closes the shafts Slab + guides are too wide to fit between shafts (bet Tommy already knew this ) But, slab will fit inbetween the shafts and preform a round cab. The slab would have to have a diameter of 1 1/2 and cannot be any larger. Since we believe the unit was mounted to something (base or another machine?), I tried to stand it up on its side as close as I could to the grinding wheel. Will keep y'all posted. Would like to have the machine mounted on its side and figure out how to get it closer to the wheel. Now I'm wondering along the lines as I think snowmom suggested that it may have been used to cut glass. I'm thinking maybe lenses for eyeglasses, and maybe felt or something was in the recessed cups. LOL.
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Tommy
Administrator
Member since January 2013
Posts: 12,673
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Post by Tommy on Apr 1, 2015 19:24:58 GMT -5
Slab + guides are too wide to fit between shafts (bet Tommy already knew this ) Did you try placing the aluminum discs on the shafts then sliding the slab between them? My test slab might have been thinner than yours but I did get one to work. Thank you for the slabs btw! That was very nice of you guys
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Post by jakesrocks on Apr 1, 2015 20:26:04 GMT -5
The plot thickens. Who will solve the mystery ?
Everything so far doesn't explain the mystery arm on the back side, which appears to be some sort of tool holder which is free to slide back & forth on its shaft. Could it have held some sort of special sharpening stone ? Possibly to sharpen slitting discs for roles of paper or some other material ? Slitting discs have to be removed from the slitters from time to time for resharpening.
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Post by gingerkid on Apr 1, 2015 21:20:10 GMT -5
I am glad you like them, Tommy, and you are very welcome. Rick tried to place a slab in the guides while they were placed on the machine when it arrived, and only part of the slab would fit. i took a pic of my effort of trying to place an obsidian slab while the guides were on shaft, and will post pic tomorrow. henpecking on tablet trying to type... jakesrocks, i am not sure which piece you are mentioning. is it the stop?
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Post by jakesrocks on Apr 1, 2015 22:33:50 GMT -5
Jan, on page 1, the 3rd pic shows what I'm talking about. It's some sort of clamping device or tool holder.
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Post by mohs on Apr 2, 2015 2:23:55 GMT -5
The plot thickens. Who will solve the mystery ? Everything so far doesn't explain the mystery arm on the back side, which appears to be some sort of tool holder which is free to slide back & forth on its shaft. Could it have held some sort of special sharpening stone ? Possibly to sharpen slitting discs for roles of paper or some other material ? Slitting discs have to be removed from the slitters from time to time for resharpening. Its stellar idea Don ! and especially the holder idea I could turn into something for sharpening slitter blades? Possibly like glass the idea could also do something with the rock'n hearts anyway it would fit in with my arsenal of tooling
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Post by snowmom on Apr 2, 2015 4:16:06 GMT -5
watching with interest. Jan, try cutting thick felt, leather or cork pads to place in the cup ends of the aluminum disks. They will need to be thicker than the rims of the cups. leather, suede side out, would grip the slab the best, I think.
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Post by gingerkid on Apr 2, 2015 7:53:18 GMT -5
on page 1, the 3rd pic shows what I'm talking about. It's some sort of clamping device or tool holder. I'll try to take a pic of it to make sure I understand what part you are pointing out, Don. Are you speaking about the bolt that hits against the stop? I think when it is against the stop, you use it to adjust the grinding or polishing? Or maybe it held a sharpening or polishing tool as you suggested. There is a spring, possibly a tension spring, on the stop. You cannot really tell what it is from my craptastic photos. Thanks, y'all, and please keep sharing your ideas with me, and I'll see if we can give your ideas a try. Rick is working 12-hour shifts, so it will be a couple of days before he can help me with it. Will post pics later today or tomorrow.
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Post by gingerkid on Apr 4, 2015 15:57:22 GMT -5
Tommy, here is a pic of an obsidian slab (almost 5mm thick) that would fit half-way through the guides while the guides were on the machine. I did not tighten the guides. Would your slab fit all the way through the guides? Maybe a piece fit in here where the arrow is pointing? jakesrocks and mohs™ - I wondered if this is the area (the spring?) where you mentioned you thought tooling of some sort fit? There may be a missing screw above the spring where the arrow points Here is a shot of the spring, the bolt hitting the stop, and one of the shafts Bolt that hits the stop is a round-end (?)
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Post by mohs on Apr 4, 2015 18:19:26 GMT -5
well that where I thought some tooling went where you turn the carriage over it would clamp in?
my idea on the keyway cut out was so that larger wheel (or whatever goes between the collar) would have clearance...
just a wild guess that machine may not have anything to do with the way I'm thinking ...
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