Items available for Education Loans from The Davistown 07-Aug-
Tools
Center bit 3312T6
5 1/4" long, 1 1/2" wide
signed "EARNSHAW BRO SHEFFIELD"
This is an English company. Courtesy of Liberty Tool Co.
Countersink bit 31611T1
4 3/4" long, 1/2" countersink
signed "C. STEEL"
This bit is made for use with a brace.
Diamond center gimlet bit 8912T8
3 7/8" long, 5/8" wide
signed "S" in a diamond
Expansion bit 21812T2
7 1/4" long, 1/2" diameter bit and 7/8" diameter bit
signed "GENUINE" "MUR MAC" "W. A. CLARK"
William A. Clark patented an expansive bit on May 11, 1858 (Nelson 1999, 171). He patented
an improvement in 1873. See ID# 021812T1 for a version of his bit patent that was
manufactured by R. H. Brown & Co.
Expansion bit 021812T1
10 1/2" long, 1/2" diameter
signed "THE CLARK BROWN MODEL" "MADE BY R.H. BROWN & CO"
William A. Clark patented an expansion bit on May 11, 1858 (Nelson 1999, 171). Reuben H.
Brown bought the patent and manufactured it. The 1873 patent is one of Clark's improvements
on the1858 bit here:
http://www.google.com/patents?id=kLVQAAAAEBAJ&pg=PA1&dq=141324+1873&hl=en&sa=X
&ei=cgFRT4efMcXn0QHvyYmEDg&ved=0CDQQ6AEwAA#v=onepage&q=141324%201873&f=
false. By 1894, R.H. Brown was the sole manufacturer of the bits and was patenting
improvements on them himself:
http://www.google.com/patents?id=SJ9WAAAAEBAJ&pg=PA2&dq=Brown+expansive+bit&hl=e
n&sa=X&ei=9QBRT9uYOOSs0AHEzrD8DQ&ved=0CDIQ6AEwAA#v=onepage&q=Brown%20ex
pansive%20bit&f=false.
Expansion bit 22612T5
7" long, 2 sizes of bits, small from 5/8" to 1", large 1" to 1 3/4"
signed "IRWIN No 21A US of A"
These were manufactured around the 1980s; courtesy of Liberty Tool Co.
Expansion drill 3312T11
10 1/2" long, bit from 7/8" to 1 3/4"
signed "THE CLARK, BROWN MODEL" "MADE BY R.H.BROWN & CO."
DATM (Nelson 1999, 119) lists R. H. Brown & Co. as making machinist tools, bits, braces, and
screwdrivers in Westville, CT, from 1873 to 1905. Courtesy of Liberty Tool Co.

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