Sam Thompson Posted August 25, 2011 Share Posted August 25, 2011 I bought a load of engineering stuff yesterday (mostly BSF taps and dies, drills, files and wad punches; it was in a nice box. Included in it were these four items. They are about 1.25" dia, they look like tool steel and there are no markings. My first thought was "blank dies" but the holes are not accurately central and the edges are milled. Anyone got any ideas? The pencil was in the box, it is unused and has never been sharpened, if it is of any interest to anyone, I'll happily send it over. Quote Link to comment Share on other sites More sharing options...
yesteryearforge Posted August 25, 2011 Share Posted August 25, 2011 look like knurls to me Quote Link to comment Share on other sites More sharing options...
John B Posted August 25, 2011 Share Posted August 25, 2011 Hi Sam, At first look they are very similar to knurling tools replacement wheels, except for the three holes another that springs to mind is cutters/blades from an industrial mincing machine being driven from the periphery, or they could be feed mechanisms for some machinery or other as the three holes would provide positive drive and easy to assemble/replace. All speculation of course, but would be interesting to know for sure Quote Link to comment Share on other sites More sharing options...
Sam Thompson Posted August 25, 2011 Author Share Posted August 25, 2011 I agree. they do look like knurls, but knurls have one central hole, the grooves are also at the same angle on all four so there could only be halves of four pairs. If they are meant to revolve. I can't imagine why there wouldn't be a central axle. The variation of the positioning of the holes that interests me; they all look slightly different. They were in the drawer with the dies which is why I thought they could be blanks when I first saw them but if I were making a die, I'd make the holes accurately and put a centre mark on them. Quote Link to comment Share on other sites More sharing options...
teenylittlemetalguy Posted August 25, 2011 Share Posted August 25, 2011 Could they be off center for use as a cam to hold something in place? three holes would make them adjustable over a range? Quote Link to comment Share on other sites More sharing options...
pkrankow Posted August 25, 2011 Share Posted August 25, 2011 Look sorta like part of a stud puller wrench. The eccentric wheel engages when turned. Phil Quote Link to comment Share on other sites More sharing options...
Sam Thompson Posted August 25, 2011 Author Share Posted August 25, 2011 Look sorta like part of a stud puller wrench. The eccentric wheel engages when turned. Phil I think you may be right, I've got a similar tool for turning studs, I'll have a look tomorrow Quote Link to comment Share on other sites More sharing options...
Bentiron1946 Posted August 25, 2011 Share Posted August 25, 2011 Interesting pencil, here is information on the ship: http://en.wikipedia.org/wiki/USS_Willard_Keith_%28DD-775%29 Quote Link to comment Share on other sites More sharing options...
arftist Posted August 25, 2011 Share Posted August 25, 2011 Those are known as parts. We have a lot of them over here too. Quote Link to comment Share on other sites More sharing options...
Sam Thompson Posted August 27, 2011 Author Share Posted August 27, 2011 Over here in the third world we prefer more specific terms. Quote Link to comment Share on other sites More sharing options...
macbruce Posted August 27, 2011 Share Posted August 27, 2011 Could they be off center for use as a cam to hold something in place? three holes would make them adjustable over a range? Or maybe if they were say all assembled on three rods with spacers in between the rods could act as a cam without having to machine a difficult central shaft with lobes and a keyway. That way if there was say a hand turn knob it could index feed something like typewriter paper.....?? Quote Link to comment Share on other sites More sharing options...
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