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Soil compacting machine

  • US 3,961,856 A
  • Filed: 02/20/1975
  • Issued: 06/08/1976
  • Est. Priority Date: 02/20/1975
  • Status: Expired due to Term
First Claim
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1. A soil compacting machine comprising frame means with a rotary shaft mounted thereon, a plurality of hammers serving as compacting elements, each of said hammers having a curved opening through which said shaft extends, each said hammer having a ground-engaging surface, ground-engaging means on said frame means for stabilizing the machine during its soil compacting operation, arm members mounted along said shaft for rotation therewith, one of said arm members being associated with each of said hammers and each being mounted eccentrically with respect to said hammer openings at different radial positions along said shaft, means for rotating said shaft to effect a walking movement of the machine in forward and reverse directions whereby, upon said rotation, said hammers are caused to be moved successively upwardly as said arm members each rotate between an approximately forward or rearward horizontal position and an upward vertical position, and whereby said hammers are permitted to be moved successively downwardly into contact with the soil as said arm members rotate beyond their approximately rearward or forward horizontal positions, each said hammer remaining in contact with the soil at said opposite end thereof during rotation of its respective arm member between the approximately rearward or forward and the approximately forward or rearward horizontal positions thereof, whereby said hammers effect a kneading action against the soil to thereby expel the air therefrom and effect an orientation of the soil crystals for improving upon the compaction of the soil surface.

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