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AUTOMATIC LOADER HEADS

  • US 3,637,249 A
  • Filed: 06/29/1970
  • Issued: 01/25/1972
  • Est. Priority Date: 06/29/1970
  • Status: Expired due to Term
First Claim
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1. A vacuum egg-lifting device comprising a vacuum head, a housing member provided at its upper end with means for securing the housing member to the vacuum head, said housing member having a passage therethrough presenting an upper guiding portion of a predetermined internal diameter and a lower spring enclosing portion of a greater internal diameter, there being a radially extending shoulder at the lower end of the guiding portion facing toward the spring enclosing portion of the holding member, a stem slidably movable within the housing member and having an air passage therethrough, said stem having an upper portion which is somewhat smaller in diameter than the guiding portion of the housing member and slidably received therein, said stem having a shoulder thereon slidably movable within the spring enclosing portion of the holding member, a spring compressed between the shoulder on the housing member and the shoulder on said stem for urging said stem outward with respect to the housing member, stop means on the lower end of the housing member for limiting outward movement of the stem under the action of said spring, said stem having a lower portion projecting beyond the lower end of the housing member and having a flexible egg-engaging cup thereon, said cup having an opening therein communicating with the air passage through the stem for the passage of air from the cup through said stem and housing member to the vacuum head for applying a vacuum or air pressure to an egg engaged by said cup.

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