If the shaft is thoroughly chalked or smoked the babbitt
will not stick to it. After pouring, remove the shaft and split
the bearing with a round, tapered wooden pin. If the bearing has
been properly made, it will split along the line of the notched
cardboard where the section of the metal is smallest. Then drill a
hole in the top as shown at A, Fig. 5, drilling just deep enough
to have the point of the drill appear at the lower side. This
cavity acts as an oil cup and prevents the bearing from running
dry.
The bolts B (Fig. 5) are passed through holes in the wood and
screwed into nuts C, which are let into holes
[Illustration: FIG. 6 Headstock Details]
D, the holes afterward being filled with melted lead.
This type of bearing will be found very satisfactory and may be
used to advantage on other machines. After the bearings are
completed the cone pulley can be placed on the shaft. To make this
pulley cut three circular pieces of wood to the dimensions given
in Fig. 6 and fasten these together with nails and glue. If not
perfectly true, they may be turned up after assembling, by rigging
up a temporary toolrest in front of the headstock.
Pages:
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216