For this purpose the distance should be not
less than 10 inches.
17. CARBIDE CHAMBERS.--(_a_) Must be constructed of galvanised iron
or steel not less than No. 24 U.S. Standard gauge in thickness for
capacities up to and including 50 pounds and not less than No. 22 U.S.
Standard gauge for capacities in excess of 50 pounds.
(_b_) Must have sufficient carbide capacity to supply the full
number of burners continuously and automatically during the maximum
lighting period.
This rule removes the necessity of recharging or attending to the machine
at improper hours. Burners almost invariably require more than their
rated consumption of gas, and carbide is not of staple purity, and there
should therefore be an assurance of sufficient quantity to last as long
as light is needed. Another important consideration is that in some
establishments burners are called upon for a much longer period of
lighting than in others, requiring a generator of greater gas-producing
capacity. Machines having several generating chambers must automatically
begin generation in each upon exhaustion of the preceding chamber.
(_c_) Must be arranged so that the carbide holders or charges may be
easily and entirely removed in case of necessity.
Pages:
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305