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1877. HARRISON, JOSEPH, 8 New Broad Street.
Patent cast-iron boiler.
IMPROVED STEAM BOILER, system of Joseph Harrison, Jun., Philadelphia, United States.
The advantages claimed for this boiler are-
1. Adaptation.— It may be adapted to any form or use (particularly to mining or ordinary stationary purposes), and is available in places of difficult access, or where the materials, skill, and means could not be easily had for making boilers of the usual kind.
2. Capacity for sustaining pressure.— It will sustain with entire safety 2 or 3 times greater pressure than the boilers in general use, and from being the multiplication of a single unit, entire uniformity of strength in all its parts is secured, no matter how large the boiler may be made. It has been proved by hydraulic pressure of 500 lbs. to the square inch without injury.
3. Facility of repairs or renewal.—It has less than ordinary liability to get out of order. It can be renewed in any part when necessary, much more speedily, and at much less cost than boilers of the usual construction. When repaired, it will, in all the renewed parts, be equally good as when new.
4. Explosion.—Serious explosions cannot occur in boilers of this construction, either from weakness of parts, too great pressure, or lowness of water. Under circumstances that would cause violent rupture in other boilers, every joint in this becomes a safety valve.
5. Facility of cleaning.—It can, by very simple means be kept free from injurious deposit, or incrustation in all its parts, with greater ease and certainty than boilers of the ordinary kind.
6. Facility of transportation.—However large the boiler may be, it can be carried in detail by a single man, and, if necessary, may be put into place, through an opening not more than 3 ft. square.
7. Economy of manufacture. —It can be made and kept in order at about one-half the cost of the boilers now generally used for stationary purposes. It will last equally long, and when worn out, the value of the old material will be much greater, in proportion to the original cost.