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Quick adjusting nut

  • US 4,693,656 A
  • Filed: 09/01/1983
  • Issued: 09/15/1987
  • Est. Priority Date: 09/01/1983
  • Status: Expired due to Term
First Claim
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1. A quickly adjustable stop nut assembly for use on a cylindrical threaded shaft of a milling machine, drill press or similar machine to provide a positive stop for relative motion between portions of the machine, which cylindrical threaded shaft has a predetermined major diameter, said stop nut assembly comprising, in combination:

  • a body having a generally cylindrical peripheral surface portion, having a through axial passageway including cylindrical portions slightly larger than the major diameter of the shaft to closely receive the shaft while affording free movement of the body axially along the shaft, and having a transverse cylindrical socket extending generally radially into said body, said transverse socket intersecting said axial passageway and opening through the cylindrical peripheral surface portion of said body;

    a cylindrical plunger disposed in said socket, said plunger having an outer end manually accessible from the periphery of said body, an inner end portion disposed within said body, and an axis extending between said outer end and end portion, said plunger also having a transverse through aperture which has an inner portion partially defined by threads adjacent the inner end portion of said plunger adapted for engagement with the threads of the shaft, and has an outer portion adjacent the outer end of said plunger affording free transverse movement of the plunger axially along the shaft, said plunger being movable within said socket between a released position with the outer portion of said aperture aligned with said passageway to afford axial movement of said nut assembly along the shaft, to an engaged position with the threads on said plunger engaging with threads on the shaft, said outer end of said plunger being generally aligned with said peripheral surface portion of said body when the plunger is in said engaged position; and

    biasing means between the said plunger and said body for biasing said plunger to said engaged position;

    said aperture being elongate axially of the plunger and said threads adjacent the inner end of said plunger being adapted for about 180 degree engagement with the threads on the shaft to lock said nut assembly against longitudinal movement on the shaft without relative rotation therebetween when said plunger is moved to said engaged position under the influence of said biasing means; and

    said body having a plurality of graduation marks about said generally cylindrical peripheral surface portion to facilitate fine rotational adjustment of the position of said nut assembly along the shaft when said plunger is in said engaged position.

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