Practice & Theory of the Injector

by Strickland Kneass

Injectors are magical. To push water into a boiler pressurized to 100 psi, you must use more than 100 psi pressure. Yet an injector can use 100 psi steam from the boiler itself to inject more water. It's magic.

There are a number of old books on injectors and they're quite good. But this is better. Here you not only learn how injectors work, but you get lots of engineering details and formulas you can punch into a pocket calculator so that you can design your own.

Chapters include early history (about how in Henri Giffard invented injectors in the 1850's), development of the principle, definition of terms, the delivery tube, the combining tube, the steam nozzle, the action of the injector, application - both foreign and American practice, and determination of size.

Learn about single and double jets, automatic or re-starting, open overflow and more. And you'll get details on the Sellers' Injector of 1876, the Monitor injector, the Nathan WF injector, the Schutte, Belfield, Sellers' of 1887, Metropolitan and others.

Again, this is a cut above. This is NOT a dumb book: drill a hole here, put a bolt there. This is a smart book that allows you to say "what if I did this? or can I do that?". Kneass, a well known engineer of his time, will teach you the secrets of a device essential to steam power.

Excellent book from 1894. Unusual quality. Lots of cross section drawings and simple formulas. If you're into steam power, consider this very carefully. 5-1/2 x 8-1/2 softcover 132 pages

No. 23063 ... none left - no plans to reprint