Niki,
 
Hey, thanks for the great information on the washers you found in Nevada. I  
have to say, I never researched bolts or washers before, so this is a  
fascinating line of inquiry.
 
Ron May
Legacy 106, Inc.
 
 
In a message dated 5/12/2008 8:37:59 A.M. Pacific Daylight Time,  
[log in to unmask] writes:

Ron,  

We have found these same washers in association with  mining and utility pole 
sites in Nevada.  The washers were patented  by Charles G. Ette, St. Louis, 
Missouri. The first was listed on 10 May  1904, Patent No. 759,599 (utility), 
for 
a term of 17 years, (United States  Patent Office 1904:110(2)484), and the 
second on 29 October 1907, Patent  No. 869,235 (utility), also for a term of 
17 
years (USPO  1907:130(4)2385).  This information can also be retrieved 
through the  United States Patent and Trademark Office website.  Utility is 
noted  because that number requires no letter preceding the patent number.  I 
 
believe the "MALL" stands for "malleable iron or other malleable  material," 
as 
noted by Ette in his second patent.  The first patent  describes the various 
uses of the washer on tie-rods employed in  structures that have heavy 
strains, such as bridges and roof structures,  as well as mining equipment 
and 
the like.  The washers apparently  came in more than one size or strength.  
The utility pole isolate had  two of these washers, one labeled with "5/8 10" 
and the other "...3/4  10."

Niki Kimball





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