This week's set has been posted:
Rob
This week's set has been posted:
Rob
2964: Is a Dyna Jet model pulse jet engine. Had several as a kid, and firmly believe they're why my hearing isn't 100%.
Most had red anodized aluminum head (venturi) assemblies, and were marked under the name 'Dyna Jet Red Head'.
They were so loud they (literally) gave my dad nose bleeds...
Erik
2964 is a model pulse-jet.
2963 Toilet bowl mold core.
2964 Agree with E & E that this is a jet engine. To be very picky about answer language... This is a real engine used for model planes.
2960 Ring stamp for stamping the karat inside a ring. From the width it might well be for 'sterling'.
I hope someone knows some of these, I am seriously, totally, clueless.
. Christ> This week's set has been posted:
Thanks, Rob. This is one of the few things on usenet that is really worth my time. Wish I knew what any of the items was / were!
. Christ> This week's set has been posted:
2964 is definitely a model pulse jet engine.
I have a design for a model called "Lil' Torchy" that uses that same motor.
Lloyd
2959 is a hay knife
Yep, agreed... loud and hot...
2959. 30" long
It's a hay knife.
Correct, I've previously posted several other sand casting patterns but never got any answers for what the parts were specifically for.
Yes, I had heard that ear plugs are recommended when operating one.
Correct, I took a photo of the stamp but it turned out really blurry, I can read
14K but not the text before that. The top half of this image is my original photo, the lower half has been mirrored to make it easier to read. Can anyone tell me what the other text says?
Good answer, that's exactly what it is.
Posting from rec.crafts.metalworking as always.
2959) Looks like a cutter from a motorized harvesting machine.At a guess -- for harvesting a cane type crop.
The "larger image" links have gotten worse. Of three browsers, only one brings it up full size -- for a moment, and then goes blank.
2960) An old forged bit for a metal-turning lathe. This one designed for working around a ridge and turning inside that area.2961) Hmm ... from the angle of the photo it is not clear, but it *looks* to me as though the crank is too close to the backboard to allow it to be turned, so it is some kind of demonstration, not a working tool.
The smaller one might be for winding thread on a bobbin, but again, the clearance for a full turn seems to be missing, at this time on the cross-bar on the read part.
2962) For separating coarse from fine parts of some grain product at a guess.2963) A wood model of a shape to be cast in iron or bronze. The flat side is put down in a half box, "Green sand" is poured around it and pounded until it sets up fairly hard, then the half box ("flask" is the official term, I think) is turned over and a similar other half is prepared and joined to it -- with holes for guiding the molten metal into the mold. Once the metal cools enough, the sand is broken off and the metal then gets whatever other post-processing is needed to make the final part.
2964) A "Dynajet Redhead" -- a pulse jet for models which is started with a bicycle pump, and once it is running, requires hearing protection for all in the neighborhood. :-)Now to post and see what others have suggested.
Enjoy, DoN.
-------------------------------------------- Known as a pattern.
----------------------------------------------
------------------------------------------------------------------------ The top half of the box is called the "Cope". The bottom half of the box is called the "Drag". An assembled cope and drag is called the "Flask".
From an earlier life when I was involved in foundry automation design.
Lew
Rob looking here
This one can be confusing to someone who doesn't have any experience at jewelry karat markings. The "HGE" , "GE", or "HG" stands for hard gold electroplated, the 18k refers to the type of plating, not that the piece of jewelry is actually 18k gold. In other words, a piece of jewelry that is stamped 18k HGE is gold plated costume jewelry with little or no value
Robin
The "flask" is the outer containment structure for the sand mold. Usually a rectangular box. The two halves of the flask lock together and that keeps the two halves of the mold aligned and keeps the mold from separating due to the hydraulic pressure of the molten metal.
Most high production small castings are made using flaskless molding today. The mold are made as a long string of molds.
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