Please note Figure 2 here:

http://www.google.com/patents?id=2SFlAAAAEBAJ&pg=PA43&dq=ininventor:Barnhart&as_drrb_ap=q&as_minm_ap=1&as_miny_ap=2007&as_maxm_ap=1&as_maxy_ap=2007&as_drrb_is=b&as_minm_is=9&as_miny_is=1889&as_maxm_is=9&as_maxy_is=1889#PPA43,M1

~~~~~~~~~~~~~
"There is also an artificial aristocracy founded on wealth and birth, 
without either virtue or talents ... The artificial aristocracy is a 
mischievous ingredient in government, and provisions should be made to 
prevent its ascendancy."

- Thomas Jefferson (1743-1826)
----- Original Message ----- 
From: "Bob Genheimer" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, September 12, 2007 12:48 PM
Subject: Re: Weird disks


> Candace
>
> Could they possibly be milk bottle stoppers.  Most were made from heavy 
> cardboard or cork, but these appear to be about the right size.
>
> Bob Genheimer
> George Rieveschl Curator of Archaeology
> Cincinnati Museum Center
> 1301 Western Avenue
> Cincinnati, Ohio 45203
> 513-455-7161
>
>
> -----Original Message-----
> From: HISTORICAL ARCHAEOLOGY [mailto:[log in to unmask]]On Behalf Of
> Candace Ehringer
> Sent: Wednesday, September 12, 2007 12:54 PM
> To: [log in to unmask]
> Subject: Weird disks
>
>
> I have several rubber? (or possibly ceramic?) disks which came from a 
> privy or
> trash dump next to a Los Angeles school cafeteria (ca. 1890s-1910s+). Has
> anyone ever seen anything like them before? Six of them have "M & M"
> stamped on both sides and one has "HQ" stamped on both sides. They
> measure 1-1/2 inches in diameter and are 1/8 inch thick.  I would 
> appreciate
> any help. My internet research has proved futile. Photos can be viewed at 
> the
> link below.
>
> http://www.flickr.com/photos/10925368@N07/