Grooved joint ends

Hand-vise.—A hand-vis for holding wire, screws, etc., is needed. About four or fou r and a h x t i nches in length is most convenient. For holding small wire, cut a groove wdth a three-sqiiaro filo across the jaws toward the jointed end. Tlie cost will be from AO cents to 3.00 accoixlmg to quality. 

Similarly, despite Thamm s advice, some designers choose to try and reduce the stresses at the joint ends by reducing the stiffness. This is best achieved by tapering, although single or multiple grooves or milled ends may be used as shown in Fig. 72. 

If conditions are such as to require a duplex tube, it is quite likely that a plain end detail for the tube will not be satisfactory. Grooved or serrated joints are recommended for this type of tube, and the ends should be flared or beaded. Table 10-8 gives recommended flare or bell radii for copper-based alloys. Also see Table 10-8A. In service where galvanic corrosion or other corrosive action may take place on the outside material used in the tube, a ferrule of inside tube... 

Fig. 8.2a,h. Elbow joint. Articular anatomy, a Schematic drawing of a midsagittal view through an extended elbow with b CT scan correlation demonstrates the articular relationship between the trochlea of the humerus (H) and the trochlear groove of the ulna (U), leading to flexion and extension joint movements. The extrasynovial anterior (asterisk) and posterior (star) fat pads are closely applied to the distal end of the humerus and lie just superficial to the joint space (in black). Note the insertion of the brachialis (Br) and the triceps (tr) muscles, which are the main flexor and extensor muscles of the elbow respectively... 

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