2. Construction And Durability
No appurtenance to a building should be more carefully selected than the Gas Machine, for in no branch of machinery are the extremes of good work and poor work so widely separated and so difficult of discernment to the ordinary purchaser.
This is evident when we consider :
First. That the Generator is always subjected on the outside to the action of moisture and the alkalies in the earth, and on the inside, to the action of Gasolene and any foreign substances it may contain.
Second. That the Air Wheel is operated in water, the parts never being more than partially submerged. It must, therefore, be protected not only from the corrosive action of the atmosphere (especially destructive on the sea-coast), but also from the galvanic action caused by the conjunction of nearly all metals with the acids frequently found in water.
Third. That the ordinary pressure upon illuminating gas is from one to three inch water-pressure (less than three ounces to the square inch), and while the Air Pump must be heavy and strong (for durability), the parts must be so well made and nicely adjusted that this delicate pressure shall be maintained without the slightest variation.
Fourth. That, notwithstanding these mechanical difficulties, it is imperatively necessary that the entire Machine shall be so simple that the ordinary house servant can attend to it.
These conditions, therefore, demand in the construction of a good Gas Machine, first-class work, simplicity in design and operation, and the use of only such metals as shall stand the various tests to which they are constantly subjected.
FIG. 2 Front End Of Air Pump Showing Simple Driving Mechanism Used On Smaller Sizes.
FIG. 3 Front End Of Air Tump Showing The Compound Driving Mechanism Used On Larger Sizes. The results of our observation and long practical experience are embodied in our IMPERIAL MACHINES.
Our Air Pumps are made of hard-rolled copper ; all seams riveted and soldered. All the mountings are of brass. The running gear is heavy, well proportioned and highly finished.
Our GENERATORS are made of heavy galvanized steel (or iron, if preferred) carefully selected, all seams close-riveted and sweated, and the whole covered with a thick coating of asphaltum.
We invite a careful and critical inspection of all parts and features of our apparatus and its comparison with machines of any other manufacture.
