Illustrated Catalogue Of Magic Lanterns (after November 1889, probably 1890)

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BO McIntosh battery and optical co., Chicago, ill., u. s. a. retort. J is a piece of flexible tubing, or as it is sometimes called, high-pressure steam hose, and being flexible enables the wash-bottle and retort to be used at any angle, so that any style of stove or heating apparatus can be used for generating gas. The washers furnished with this outfit are Asbestos; ordinary sole-leather washers, however, can be used just as well, the only precaution being that they must be kept soft and pliable by soaking them in warm water and keeping them in oil when not in use. A careful attention to these details which have been given at length in order that the novice may have every direction for his guidance, regard being paid to closing unions tightly, and that the washers should always be soft and pliable, and a good grade of potassium, preferably the French chlorate; that the chemicals are free from impurities, that no straw, bit of paper, or chip, or piece of string be mixed with them, will insure a safe and easy method of generating oxygen to high pressure, which can only be appreciated by those who have used it. With this outfit is furnished a large wrench for the tightening up of the large burrs of the various unions, a long poker for breaking up the slag and debris in cleaning out the retort, a funnel for pouring the chemicals into the retort, plug-cap for safeguard against the escape of gas, and a number of extra washers, and also a number of metallic discs to be used in the safety blow-out.