[Bonetools] Fwd: Mystery bone object

[François Poplin]

Oh Dear ! what a pleasure to see that ! I have only one picture and I 
cannot enlarge it this morning, but :

it's clearly and definitely a piece of, let us say : a machine where 
something rolled (as a condyle in it's articulation-cavity (would you 
say ginglyme ?) : I have a good example with an arthritic elbow-joint of 
stripped hyaena, with such groves/striations (excuse me, I cannot tell 
exactly what I would like to say). Maybe the rolling piece, a kind of 
axe, was supported by the bone with this face (ot the picture) facing 
the sky.
To keep te mobile part in place, you make a sort of ditch, and, 
afterwards, the wear grinds and enlarges the original grove/ditch and 
gives what you see here. And when the marrow cavity/chamber is to 
present, you have to change the bone, as the soles of shoes of the tramp 
played by Charlie Chaplin.


Je continue en français excusez-moi. Est-ce que le profil est purement 
circulaire ou un peu plus large, comme si la pièce tournante avait pu 
naviguer un peu ? Si c'est bien profil en arc de cercle, il faut penser 
à un dispositif en mâchoires, comme dans un casse-noix, saisissant la 
pièce "en mordant", par exemple pour  freiner/réguler la vitesse ; et 
est-ce que (très important aussi) le mouvement pouvait être alernatif ou 
continu (toujours dans le même sens, ce qui fait moins "naviguer") ?

That's all for today.

Alice Choyke a écrit :
> Dear François,
>      If you still cannot open the file I will try reducing the size of 
> the image which is huge (13+ megabytes)
>
> Best,
> Alice
>
> ---------- Forwarded message ----------
> From: *Leigh Allen* <leigh.allen at oxfordarch.co.uk 
> <mailto:leigh.allen at oxfordarch.co.uk>>
> Date: Thu, Mar 18, 2010 at 3:00 PM
> Subject: [Bonetools] Mystery bone object
> To: bonetools at listserv.niif.hu <mailto:bonetools at listserv.niif.hu>
>
>
> Dear All,
>
> I am new to this site, so let me briefly introduce myself. I am the 
> Finds manager at Oxford Archaeology and have been for the last 20 
> years !! I also write reports on Medieval/Post Medieval metalwork and 
> worked bone objects. I have an object from a site that we excavated in 
> Winchester that I would like to ask you about (see attached photos). 
> It is from a rubble later dated anywhare from 5th-13th century !
>
> The cattle metacarpal has a large scoop taken out of the proximal end, 
> the surface is perfectly smooth and very heavily polished but the rest 
> of the bone is not. At the distal end, which is damaged, another scoop 
> has been removed but it is not smoothed or polished to the same 
> degree. Striations in the polished surfaces indicate a longitudinal 
> direction of wear. The wear is so great and so regular it would almost 
> imply that it was machine made.
>
> Any help would be most gratefully received
>
> Kind regards
>
> Leigh Allen
>
>
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