From: MV (MV@dc9.tzo.com)
Date: Fri Aug 19 2005 - 22:22:46 PDT
OK,
I'll take a wing at this. If the bolts go through the aluminum and are
threaded in the aluminum and the end of the bolts bear on the steel, and
do not thread into it, then those bolts are probably used to remove the
aluminum cones that clamp the cable. If they are used in that manner,
they would be considered jack screws.
Consider this and see if it makes any sense?
I don't know how big this tapered cone is, but I doubt that they would
use something like that as a giant screwed in plug.
Also, if they are using a tapered fitting to grab a cable, then the
normal way to do that would be to have the pull on the cable attempt to
pull the wedges deeper into the tapered hole. Hence the harder the
pull, the more clamping action on the cable.
How did you manage to move that anchor? Load it on a trailer, etc?
Dave
Douglas B Rupp wrote:
>
>
> -----Original Message-----
> From: Douglas B Rupp [mailto:rupp@gnat.com]
> Sent: Wednesday, August 17, 2005 11:26 AM
> To: 'Military Vehicles Mailing List'
> Subject: How do you unscrew an Army anchor?
>
> I bought a 25000 lb anchor at a Government Liquidation auction a while back.
> I thought at first it was Navy but a) the color is wrong, b) it doesn't
> appear to have ever been in sea water, c) the shape is unusual.
>
> A friend (who was very persuasive) claims it's an Army "dead head" used on
> (for example) a Ranger training course to counterbalance an suspended
> cableway or something similar.
>
> I want to use it for a similar purpose (couterbalance) but I can't get the
> top off. The anchor is made of steel filled with cast iron with a
> hemispherical bottom and a 6' tall 10" diameter post sticking up. In the top
> of the post there's a 2 piece funnel shaped *aluminum* clamshell with 6
> recessed allen headed bolts in a circle around the edge of the clamshell
> top. There's a 1-3/8" hole at the bottom of the "funnel" and wire rope marks
> on the tapered sides, so it seems clear that the clamshell is supposed to
> come out and apart so that a wire rope with a knob on the end can be
> inserted.
>
> I got the bolts out and the funny thing is that the bolt heads are resting
> on steel anchor, not aluminum, so the bolts aren't holding anthing *down*.
> The only other purpose they could serve is to prevent the aluminum top from
> rotating. So the only conclusion I can come to is that the aluminum top is
> like a gigantic bolt that unscrews from the anchor once 6 smaller bolts are
> removed. I made an unscrewing tool and put about 600 ft-lbs of torque on the
> top but it didn't budge. The next step would be lubrication, heat and more
> torque.
>
> I'd appreciate hearing from anyone who has seen one of these things and
> knows how they work.
>
> --Douglas Rupp
>
>
>
>
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