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Excavating and pipe laying machines

  • US 5,707,175 A
  • Filed: 02/15/1995
  • Issued: 01/13/1998
  • Est. Priority Date: 08/27/1992
  • Status: Expired due to Fees
First Claim
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1. A pipe laying machine comprising:

  • a vehicle carrying excavating means for excavating a trench,a pipe laying box behind said excavating means which in use is positioned in the excavated trench,means in said pipe laying box for pressing a length of pipe positioned in use at the bottom of said box into connection with an immediately previously laid pipe length, andmeans in said pipe laying box for holding a supply of lengths of pipe and releasing said lengths one by one into the bottom of sad box for laying,said pipe laying box having a bottom wall adapted to receive a length of pipe from the pipe holding and releasing means, and said pipe holding and releasing means comprising means defining for a lowermost pipe length in said supply of lengths of pipe a ready-to-release position which is spaced upwardly from the position of a pipe length when in the bottom of the pipe laying box and from which the pipe length is released in operation to drop directly into the bottom of the box for laying,the means defining the ready-to-release position including means for holding up the next pipe length in said supply from moving into said ready-to-release position while the pipe length in the ready-to-release position is being released.

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