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LUBRICATOR SIGHT FEED DOME

  • US 3,707,204 A
  • Filed: 09/13/1971
  • Issued: 12/26/1972
  • Est. Priority Date: 09/13/1971
  • Status: Expired due to Term
First Claim
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1. In a lubricator of the type having an adjustable valve for metering lubricant to an air stream and a transparent sight dome body through which the rate of metering of the lubricant may be observed, the improvemeNts in combination, comprising:

  • a. said dome body having a discharge orifice and a valve cooperating therewith, b. said valve being affixed to a valve stem threadedly engaging the dome body, whereby rotation of the valve stem may vary the rate of flow through the discharge orifice, c. a knob affixed to the valve stem for rotating same, d. said knob having resilient first locking means adapted to be urged radially inwardly for engaging second locking means spaced circumferentially on the dome body, whereby the knob may be locked at desired increments of its rotation, e. said knob including a locking ring for rotating same, said locking ring being mounted for slidable movement in the axial direction of the valve stem, and f. a first camming surface on said locking ring adapted to cooperate with a second camming surface on said first locking means, g. the construction and arrangement being such that when the locking ring is moved axially in one direction, said camming surfaces cause said first locking means to engage said second locking means and lock the knob against rotation.

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