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continued from previous page                         socket formed by notches 34, and bearing 31 is placed in
                                                              the socket formed by notches 36, with the outer races of
                                                              the bearings seated against the aligned faces of end walls
                                                              34a, 36a and the inner races free to rotate. Axle 27 is then
                                                              inserted into the body from the rear and passed through
                                                              bearing 29, spacer 32, and bearing 31. An annular washer
                                                              38 is placed on the end portion of the axle emerging from
                                                              bearing 31, and gimbal head 26 is then pressed onto the
                                                              emerging end portion, with an interference fit and friction
                                                              between the side wall of bore 33 and the axle securing the
                                                              two parts tightly together.
                                                               The axle, spacer, and washer are fabricated of a rigid
                                                              material such as steel, and in one exemplary embodiment,







         Figure 21: Exploded isometric view of one of the handle assemblies.
         32 disposed coaxially about the axle between the bearings,
         and the gimbal head affixed to the other end portion of the
         axle. In the embodiment illustrated, the gimbal head has an
         axially extending bore 33 of slightly smaller diameter than
         the axle, and the gimbal head is affixed to the axle by press
         fitting the end portion of the axle into the bore. However, the
         gimbal head can also be affixed to the axle by other suitable
         means such as a set screw or by threading the gimbal head
         onto the end portion of the axle.
           Bearings 29, 31 are mounted in sockets formed by axi-
         ally aligned notches 34, 36 in the end portions of ribs 37
         within the barrel section of the handle body. As best seen   Figure 23: End elevational view of the body shown in figure 22.
         in figures 22-24, the ribs are axially elongated and formed
         integrally with side wall 22. They are generally rectangu-
         lar in cross section and extend radially toward axis 21 from   the axle is fabricated of stainless steel, and the spacer and
                                                              washer are fabricated of mild steel. The spacer, washer,
                                                              and enlarged head of the axle are all smaller in diameter
                                                              than the outer races 29a, 31a of the bearings adjacent to
                                                              them and are, therefore, free to rotate with inner races
                                                              29b, 31b. A cylindrical hub 39 at the rear of the gimbal
                                                              head extends into the front portion of bore 17 and engages
                                                              the front face of the washer, with the axle being retained
                                                              in the bearings by the enlarged head at one end and the
                                                              gimbal head at the other.
         Figure 22: Vertical sectional view of the body of one of the handle   The gimbal head extends axially from the handle body
         assemblies.                                          and includes a base section 41 and a ring section 42. The
                                                              base  section  has  a  semi-ellipsoidal  shape,  a  major  axis
         the inner side of the wall. In the embodiment illustrated,   aligned with handle axis  21, and a diameter at the rear
         six such ribs are spaced equally about the axis in diametri-  corresponding to the diameter at the front of handle bar-
         cally opposed pairs.                                 rel 16b. Ring section 42 lies in an axial plane at the front
           Notches 34, 36 have end walls 34a, 36a that are perpen-  of the base section and is of greater diameter and lesser
         dicular to axis 21 and bottom walls 34b, 36b that diverge   thickness than the base section. In an exemplary embodi-
         toward outwardly toward the ends of the ribs at an angle
         of about 3 degrees relative to the axis. End walls 34a, 36a
         are axially aligned in radial planes and spaced apart by a
         distance  corresponding  to the  length  of  spacer.  The  depth
         of the notches is such that the distance between the bottom
         walls of opposing notches at the junctions with the end walls
         corresponds to the outer diameter of the bearings. Alterna-
         tively, if desired, the bearings can be mounted in the bore by
         other suitable means such as counterbores at opposite ends
         of the handle.
           The handle is assembled by placing one of the bearings
         into its socket from one end of the body, then inserting
         the spacer and the other bearing from the other end. In   Figure 24: Enlarged, fragmentary, sectional view of one of the handle
         the  embodiment  illustrated,  bearing  29  is  placed  in  the   assemblies.

         58     Wire Rope News & Sling Technology   February 2017
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