| All Patents in class 279/69 |
Patents 1 -
15
of 34
      |
| Number | Date | Patentee | Title | Type |
| 44,067 | Sep. 06, 1864 | E.B. Beach | Improved self-centering chuck | drill chucks |
| RE2,104 | Nov. 14, 1865 | E.B. Beach | Self-centering chuck | drill chucks |
| 54,760 | May 15, 1866 | L.H. Olmsted | Improvement in chucks | drill chucks |
| 90,338 | May 25, 1869 | G.E. Brettell | Chuck | drill press chucks |
| 146,262 | Jan. 06, 1874 | W.H. McKoy | Improvement in Chucks | |
| 194,122 | Aug. 14, 1877 | H.B. Beach | Improvement in drill-chucks | drill chucks |
| 206,320 | Jul. 23, 1878 | G.W. Hayden | Means of keeping the jaws in alignment | |
| 210,075 | Nov. 19, 1878 | C.H. Amidon | Improvement in bit-braces | brace chucks |
| 274,135 | Mar. 20, 1883 | C. Morrill | A single coaxial spring uges the jaws apart to receive the bit. | |
| 310,060 | Dec. 30, 1884 | H. Johnson | Lathe Chuck | metal lathe chucks |
| 323,178 | Jul. 28, 1885 | W. Mason | Drill-chuck | drill press chucks |
| 374,363 | Dec. 06, 1887 | H. Ihsen | Wood-boring machine | portable timber borers |
| 384,928 | Jun. 19, 1888 | R.J. Pratt | Drill Chuck | metal lathe chucks |
| 489,862 | Jan. 10, 1893 | F. Blessing | Chuck | metal lathe chucks |
| 499,377 | Jun. 13, 1893 | J. Emig | Chuck | metal lathe chucks |
