taper screw cut upon raising one cover; D isa cover; Bis a space down, admitof the book being brought for- low the engineer to see the state of the boiler it, on which is fitted an expanding shell or always ata glance. nut formed of segments whose lengths lie lon- rage gitudinally with the arbor,… … of which two combs are made, the teeth of lighted up the pavement is illuminated with inside. rods, cb, fig. 2, have their inner ends ‘secured both being cut in one revolution of the wheel hundreds of flashing lights, glancing up from in a box, f,and they are supported on cross X, ¢ b are two of…
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