Side cutting device for earth boring procedures

Details Side cutting device for earth boring procedures Side cutting device for earth boring procedures

1975-04-18

1976-10-26

Purser, Ernest R.

Boring or penetrating the earth

Enlargement of existing pilot throughbore requiring...

175326, 175414, E21C 2300

Patent

active

039878570

ABSTRACT:
When a pilot hole is pushed through the soil from one location to another prior to pulling an earth cutter through the pilot hole, it is often found that the pilot hole has deviated from a straight line. This deviation is usually at the maximum at the exit end of the pilot hole. The present device is a substantially rectangular cutter assembly having a pipe connection allowing it to be attached on the end or along the length of the pilot hole forming pipe. The offstanding cutter portion not only cuts a plug of soil as it is pulled through the soil in one direction, but compresses this plug slightly. When the device is moved in the opposite direction, projections or the like engage this compressed plug and facilitate the extrusion of the plug through the exit end of the pilot hole. The device is secured either to the end of the pilot hole forming assembly or adjacent thereto, at the exit end and is turned so that it is offset in the direction opposite to the direction of the deviation. It is then pulled back by the pilot hole forming assembly thus cutting a substantially rectangular plug which is then extruded back through the exit end. This action is repeated until the pilot hole is aligned.

REFERENCES:
patent: 2305200 (1942-12-01), Sitton
patent: 2664273 (1953-12-01), Merrick
patent: 2903252 (1959-09-01), Ebeling
patent: 3478527 (1969-11-01), Sherrod
patent: 3482641 (1969-12-01), Atkins et al.
patent: 3505826 (1970-04-01), Hamstorf
patent: 3754608 (1973-08-01), Baille et al.

Affiliated with

Also associated with

Rating

Side cutting device for earth boring procedures does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Side cutting device for earth boring procedures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Side cutting device for earth boring procedures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-180154