An extra pair of hands makes things easier at this
point. Be careful not to unsolder the spindle bearing, a thing which cannot
happen if the bearing is kept cool by an occasional drop or two of water. A
little extra solder should be applied round the points where the ports will
be.
The Steam Ports.--These are drilled (with a 1/32-inch twist drill), at an
angle of about 30 degrees to the plate, along the circle already scribed.
If you have any doubt as to your boiler's capacity, begin with one hole
only, and add a second if you think it advisable. As already remarked,
pressure must not be sacrificed to steam flow.
Lubricators.--These are short pieces of tubing hollowed at one end by a
round file of the same diameter as the bearings. A little "Tinol" is
smeared over the surfaces to be joined, and the lubricators are placed in
position and heated with the blow-lamp until the solder runs. To prevent
the oil flowing too freely, the lubricators should be provided with
airtight wooden plugs.
Escape Pipes.--The pipe for the exhaust steam is now soldered into disc
E, and a small water escape into the ring at its lowest point.
Pages:
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152