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Tool and workplace lubrication system having a modified air line lubricator to create and to start the delivery of a uniformly flowing pressurized air flow with oil, to deliver the oil continuously and uniformly where a metal part is being formed

  • US 5,086,878 A
  • Filed: 05/23/1990
  • Issued: 02/11/1992
  • Est. Priority Date: 05/23/1990
  • Status: Expired due to Term
First Claim
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1. A lubrication system to lubricate tools and workpieces to eliminate most of the friction during the forming of metal parts, so little heat is generated and coolants are not required, wherein an air line lubricator, originally designed for internally lubricating compressed airflow driven pneumatic tools, is modified to create and to start the delivery of a pressurized airflow with oil, so the oil becomes the lubricant at a location where metal parts are being formed, comprising:

  • a) an air line lubricator, before modification, including the entire assembly thereof comprising;

    a housing;

    a compressed overall airflow entry thereof;

    a venturi portion thereof to receive, at low airflow rates, the majority airflow of this overall airflow along one path of the overall airflow;

    a throat section thereof where a pressure drop is created upon passage of this majority airflow;

    a pre-departure mixing basin thereof to receive the majority airflow;

    a compressed air exit thereof to receive and to pass the majority airflow out of this housing;

    an air receiving portion thereof to receive, at low airflow rates, the minority airflow of this overall airflow along another path of the overall airflow;

    a restrictor disc thereof which slightly deflects to allow this minority airflow to enter the pre-departure mixing basin and to continue on through the compressed air exit;

    an oil reservoir bowl thereof having an oil pickup tube and a check ball;

    an oil metering block thereof having a rotatable metering screw;

    inner and outer sight domes thereof having a clearance between them to view flowing oil, having an entry to receive oil from the metering block and an oil discharge exit by the throat section forming oil drops which drip into the throat section;

    an oil receiving entry thereof having a removable cap, for filling the oil reservoir bowl;

    a drain for the oil reservoir bowl; and

    a check ball subassembly thereof to seal off the oil reservoir bowl from the pressure of the compressed airflow through the housing, when the oil receiving entry is opened;

    whereby this air line lubricator, before modification, is ready to receive oil in the oil reservoir bowl and when oil is so filled and the cap is replaced, and compressed air, at a low airflow rate, is directed into the overall airflow entry, the compressed air follows the two airflow paths, with the majority airflow meeting and carrying the oil drops at the throat section and then meeting the minority airflow in the pre-departure mixing basin, and thereafter the overall airflow with the oil leaves the air line lubricator; and

    b) an added modification structure installed in the housing of this air line lubricator to direct the compressed overall airflow and the oil carried within this overall airflow from the pre-departure mixing basin through the compressed air exit in a controlled delivery of the compressed airflow and oil in a continuous operation, which insures a continuity of this controlled delivery even through a tilting of the housing might occur, otherwise causing a tipping of the pre-departure basin, which otherwise would cause an over abundance of oil passing through the compressed air exit of the housing, or alternately no oil passing through this compressed air exit of the housing, and which insures a continuity of this controlled delivery even through an unwanted short delivery time of more overall compressed airflow might occur, comprising;

    an oil and overall airflow pick up passageway structure arranged within the housing of the air line lubricator and having a continuous uniform diameter to direct the oil and overall airflow from near the bottom of the pre-departure mixing basin, up to the compressed air exit of the housing, and then through this compressed air exit of this then modified air line lubricator.

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