| Items available for Education Loans from The Davistown | 19-May- |
| Tools |
| Bow drill | 9514T15 |
| 22 1/4" bow, 19" drill, 5/16" wide bit |
| unsigned |
| This contemporary bow drill was made in Egypt. |
| 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 | 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 | 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 | 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. |
| | 74 |