| Patents for G. L. Chapin |
Patents 1 -
15
of 29
      |
| Number | Date | Patentee | Title | Type |
| 81,967 | Sep. 08, 1868 | J.S. Williams | Improvement in double ratchet-lever power | woodworking machine mechanisms |
| 82,351 | Sep. 22, 1868 | C. Robinson | Improvement in miter-boxes | miter boxes |
| 91,387 | Jun. 15, 1869 | A. Vaughan | Improved post auger | |
| 107,861 | Oct. 04, 1870 | W. Bowman | Improvement in circular-saw mills | circular sawmills |
| 108,326 | Oct. 18, 1870 | J.C. Butterfield, J. Hay | Improvement in trip-hammers | drop hammers |
| 137,284 | Apr. 01, 1873 | E. Benjamin | Improvement in sawing-machines | clapboard machines |
| 142,669 | Sep. 09, 1873 | E. Benjamin | Improvement in cutter-heads | cutterheads |
| 145,304 | Dec. 09, 1873 | W.F. Moody | Improvement in rotary steam-engines | steam engines |
| 148,840 | Mar. 24, 1874 | W.F. Moody | Improvement in dovetailing machines | dovetailing machines |
| 150,524 | May 05, 1874 | J.C. Butterfield | Improvement in plow-beams | plows |
| 163,277 | May 11, 1875 | G.H. Strong | Pinchers | combination tools |
| 173,439 | Feb. 15, 1876 | E. Benjamin | Improvement in cutter-heads for planing-machines | cutterheads |
| 177,922 | May 30, 1876 | J.P. Burnham | Improvement in pressure-rolls for wood-planing machines | wood planers |
| 182,782 | Oct. 03, 1876 | H.M. Wilcox | Improvement in wood-planing machines | wood planers |
| 196,327 | Oct. 23, 1877 | E. Benjamin | Improvement in machines for planing wood | wood planers |
