Trench digging, cable laying and trench filling apparatus

• US 4,825,569 A
• Filed: 05/17/1988
• Issued: 05/02/1989
• Est. Priority Date: 05/17/1988
• Status: Expired due to Fees

• Current Assignee: Roger D. Porter
• Original Assignee: Roger D. Porter
• Inventors: Porter, Roger D.
• Primary Examiner(s): Eickholt, Eugene H.
• Application Number:
  US07/195,338
• Time in Patent Office: 350 Days
• Field of Search: 37/101, 37/142.5, 37/87, 37/91, 37/94, 37/80 A, 405/154, 405/157, 405/174-177, 405/179-183
• US Class Current: 37/142.5
• CPC Class Codes: E02F 5/08 with digging wheels turning round an axis E02F5/109 takes precedence; with digging wheels per se E02F3/18
• CPC Class Codes: E02F 5/101 forming during digging, e.g. underground canalisations or conduits, by bending or twisting a strip of pliable material; by extrusion
• CPC Class Codes: E02F 5/12 with equipment for back-filling trenches or ditches

Abstract

A trench digging apparatus which is provided with a safety shield shaped to direct dug dirt back into the trench. The trench digger is also provided with a cable laying device which lays the cable in the dug trench ahead of the refilling dirt. A pipe pulling attachment may also be provided for laying a pipe while digging and refilling the trench.

Claims

1. A trench digging, cable laying and trench filling apparatus which comprises a main frame, front and back wheels supporting said frame and rotatable about respective axles,

a handle secured to said frame for moving said apparatus relative to a surface,

a cutter blade secured to a rotary axle supported by said frame,

a pulley means secured to said rotary axle for rotating said axle,

drive means for driving said pulley means,

control means for controlling rotation of said pulley means and said cutter blade,

a safety shield secured to said frame relative to said cutter blade for protection from said cutter blade,

said safety shield including inner and outer spaced plates on opposite sides of said cutter blade, a top enclosure for closing an area outwardly of said cutter blade and a front plate that closes a portion of an area in front of said cutter blade, and

said front plate forming with said spaced plates and said top enclosure, an opening forming a safety shield chute which extends downwardly and forwardly of said front plate through which loose dirt is thrown by said cutter blade during use.

2. An apparatus as set forth in claim 1, which includes:

an upwardly extending frame secured to said main frame for supporting a cable spool, and

a cable chute secured to said front plate through which a cable is fed for laying a cable in said trench during forming a trench by said cutter blade.

3. An apparatus as set forth in claim 2, which includes:

means for securing said inner plate of said safety shield to said upwardly extending frame.

4. An apparatus as set forth in claim 1, in which:

said drive means is a power engine which drives a drive pulley, and

belt means operative relative to said drive pulley which drives said pulley means secured to said rotary axle for rotating said cutter blade.

5. An apparatus as set forth in claim 2, in which:

said drive means is a power engine which drives a drive pulley, and

belt means operative relative to said drive pulley which drives said pulley means secured to said rotary axle for rotating said cutter blade.

6. An apparatus as set forth in claim 3, in which:

said drive means is a power engine which drives a drive pulley, and

belt means operative relative to said drive pulley which drives said pulley means secured to said rotary axle for rotating said cutter blade.

7. An apparatus as set forth in claim 2, in which said cable chute is adjustable relative to a plane along said front and rear wheels.

8. An apparatus as set forth in claim 3, in which said cable chute is adjustable relative to a plane along said front and rear wheels.

9. An apparatus as set forth in claim 5, in which said cable chute is adjustable relative to a plane along said front and rear wheels.

10. An apparatus as set forth in claim 6, in which said cable chute is adjustable relative to a plane along said front and rear wheels.