It is manifest that, where space is to spare, purifiers containing the
materials mentioned in Chapter V. can be added to any portable acetylene
apparatus, provided also that the extra weight is not prohibitive. Cycle
lamps and motor lamps must burn an unpurified gas unpurified from
phosphorus and sulphur; but it is always good and advisable to filter the
acetylene from dust by a plug of cotton wool or the like, in order to
keep the burners as clear as may be. A burner with a screwed needle for
cleaning is always advantageous. Formerly the burners used on portable
acetylene lamps were usually of the single jet or rat-tail, or the union
jet or fish tail type, and exhibited in an intensified form, on account
of their small orifices, all the faults of these types of burners for the
consumption of acetylene (see Chapter VIII.). Now, however, there are
numerous special burners adapted for use in acetylene cycle and motor
lamps, &c., and many of these are of the impinging jet type, and some
have steatite heads to prevent distortion by the heat. One such cycle-
lamp burner, as sold in England by L. Wiener, of Fore Street, London, is
shown in Fig. 21. A burner constructed like the "Kona" (Chapter VIII.
Pages:
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659