An Elementary Text book On Mechanical Drawing

Cover An Elementary Text book On Mechanical Drawing
An Elementary Text book On Mechanical Drawing
John Ernest Jagger
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What is the pitch of the bolts along the bolt circle, in terms of the bolt diameter in Drawing No. 20 ? In calculating the bolt diameter, the steam pressure is taken as acting on the area of a circle touching the inner edges of the bolt-holes.
HYDRAULIC PIPE JOINTS.
Drawing No. 20A.
ONE of the chief difficulties in connection with the hydraulic transmission of energy is that of preventing leakage of water from the various joints in the distribution pipes. Fig. 86 shows a hydraulic screw joint,
...as used for coupling up two lengths of 1^-inch bore hydraulic piping. The end of one pipe is swelled up and screwed. The end of the other is formed with a collar. A gun-metal hexagon nut or coupling pulls the two ends together against a gasket or gutta-percha washer, bedding on, which makes the joint tight.
For joining up two lengths of a cast-iron transmission main, flanges with circular registers are cast on the ends of the pipe. On the flanges being drawn together, the protecting register beds on the gutta-percha ring, making the joint watertight.


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