US Patent: 42,863
|
| Improvement in machines for boring angular holes
|
|
Patentee:
|
|
| Benjamin Merritt, Jr. (exact or similar names) - Newton, MA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Granted: |
May 24, 1864 |
|
Patent Pictures:
[
1 | 2
]
|
|
|
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Jeff Joslin
|
|
Description: |
| This patent is mentioned in "Knight's American Mechanical Dictionary" of 1874: "MERRITT'S Machine for boring Angular Holes, May 24, 1864. The holes are bored by rotary cutters; fixed, and reciprocating in a plane at right angles to the axis of the hole. The relatively fixed auger makes a round hole, as usual; certain cutters which partake of the circular motion have also a reciprocation towards and from their axis of rotation, being projected outward and again retracted four times in a rotation, to cut out the angles left by the round auger, thus making a square hole." |
|
){kind=link}
){kind=link}