Lock nut and method for making same
AssigneeSlip-on Lock Nut Company
InventorsJames H. Aldridge, Arvin H. Maitland
Life of this patent
Estimating the term…
Abstract
A lock nut arrangement formed of a first and second generally C-shaped nut member which are joined together in a manner allowing limited axial movement and free rotation relative to one another about the axis were two members were initially threaded to central openings. The nut assembly may be radially installed on a threaded lock and locked thereon by rotating the nut members relative to one another. A lock nut is manufactured by first forming a first and second nut blanks, axially pressing the nut blanks together, clamping the nut blanks and threading the central bore, rotating the nut blanks relative to one another a predetermined distance and slotting the nut blanks.
Claims20
A lock nut comprising:
- first and second generally C-shaped nut members, each having an internally threaded axial bore portion and a slot projecting radially from said bore portion, said nut members further provided with connection means for axially connecting the nut members to permit free relative rotation and limited axial displacement therebetween while preventing the total separation thereof.
The method of making a lock nut comprising the following steps:
- forming a first and second nut member blank each having a central axis and means for axially connecting the blank together;
- pressing the first and second nut blanks together while coaxially arranged, causing deformation to occur, thereby interlocking the two nut blanks together, enabling limited axial movement and free relative rotation therebetween;
- machining a tapped hole through the two nut blanks while said blanks are clamped together;
- rotating the first nut member 1/6 to 1/2 of a revolution relative to the second nut member in a direction opposite the direction of the machine threads when viewing the first nut member along the central axis;
- and
- machining a slot in the two nut members while clamped together, said slot extending radially outward from threaded hole to the periphery of said nut members to form two generally C-shaped interlocked nut members.
The method of making a lock nut comprising the following steps:
- forming a first and second nut member blank each having a central axis and means for axially connecting the blank together;
- pressing the first and second nut blanks together while coaxially arranged, causing deformation to occur, thereby interlocking the two nut blanks together, enabling limited axial movement and free relative rotation therebetween;
- inserting a spacer between the first and second nut members to axially separate them apart 1/6 to 1/2 of a thread pitch;
- machining a tapped hole through the two nut blanks while said blanks are clamped together;
- and
- machining a slot in the two nut members while clamped together, said slot extending radially outward from threaded hole to the periphery of said nut members to form two generally C-shaped interlocked nut members.
Dependencies are inferred from the claim text.