CHAPTER XXVII.

=VISE WORK= (Continued).

=Examples in Vise Work= 113 to 127 The various form of connecting rods 113 Solid ended connecting rods 113 Clip ended connecting rod 114 Strap ended connecting rod 115 Double gibbed connecting rod 115 Locomotive connecting rod 115 Bolted connecting rod straps 115 Marine engine connecting rod 116 Tapered connecting rod ends and their advantages 117 Stepped connecting rod straps and their advantages 117 Fitting up connecting rods 117, 119 Welding up stub ends of connecting rods 118 Aligning welded connecting rods 118 Fitting on connecting rod straps 119 Filing out connecting rod keyways 119 Fitting the keys and gibs 119 Fitting connecting rod brasses to their straps 120, 122 The joint faces of connecting rod straps 121 Disadvantages of joints left open to take up the wear 121 Obviating this disadvantage 121 Marking the lengths of connecting rods 122 Fitting up a fork end connecting rod 122 Aligning fork end connecting rods 123 Repairing connecting rods 124 Setting connecting rod brasses together 125 Lining up connecting rod brasses 126 Adjusting the lengths of connecting rods 126 Setting up the keys of connecting rods 126 Shapes of the crowns of brasses 127 Fitting up a link motion 127 Templates for filing the link slot 127 =Case-hardening= 128 to 133 Sheehan's case-hardening process 128 Preparing work for 129 Setting work after 129 Fitting brasses to pillow blocks or axle-boxes 130 Bedding brasses 132 The proper shape for the patterns of brasses 132 =Originating a True Plane= 133 Finding which of three surfaces is the nearest to a true plane 133 Methods of testing the surfaces 134 A new process of originating surface plates 134 The deflection of surface plates 134 =The Friction of Plane Surfaces= 135 =Oiling True Surfaces= 135