US75279A

US75279A - Improvement in tubes ot steam-geneeatoes

Info

Publication number: US75279A
Authority: US
Publication date: 1868-03-10
Anticipated expiration: 1885-03-10

Description

No. 75,279. PATENTED MAR.10, '1868. P. M. KAFER. TUBE. FOR STEAM GENERATORS.

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Letters Patent No. 75,279, dated March 10, 1868.

IMPROVEMENT IN TUBES OF STEAM-GENERATORS.

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TO WHOM IT MAY CONCERN:

7 Be it known that I, PETER M. KAFER, of Trenton, New Jersey, have invented new and useful Improvements in Heating-Tubes for Bo'ilers; and I do hereby declare the following to be a full and'exact description of the same, reference being had to the drawings that accompany and form a part of these specifications, in which- Figure 1 isa vertical bisection of one style of my improved tubes.

Figure 2, sectional 'view of one slightly different from the first. v I

Letter A, attube, closed at the bottom; letter B, another tube, open at both ends, and of diameter much less than that,of A, .in which this latter is placed; letter 0,:1. strip, of width equal to the space between the inside 'of A. and the outside of B. This strip is arranged spi'rn'lly between A and B, as the drawings illustrate.

In the tube A, at the end of tube B, I place aconieal or V-shaped piece, shown at e in fig. '1. This has a small opening inthe centre, so as to allow a. portion of the water to pass between it and the end of the tube A.

This v-shaped piece serves to turn the current of the water up to be conducted by the spiral, 0, back through tube A.

The object of my invention is to make and produce, for the public, tubes for fire and other engines that will sccure more uniformityof heat, and be less liable to warp or suffer mis'plncement than those heretofore in use.

Generally in e'nginesytho heat cannot be uniformly applied. One side of the tiibes will be more heated than the other, and thus be less efi'eetunl. in its purpose, and, what is often worse, he warped or strained from its normal position. Many engines from these causes call for repairs almost at the very commencement of their use. The adoption of my plan obvintes all this.

When heat is applied, and the water begins to ascend it is, by the spiral, 0, carried around and upwards, coming in contact with all sides, both of the tube A and the tube B. Now, however rapidly the fire is kindled and the heat accumulates, a disproportionate heating of any parts will not take place.

I am aware that oblique or spiral fins or projections have been introduced into vertical or inclined watertubes of stcamboilers for the purpose of producing rotative motion in the contents thereof, and that theguides or fins-soplaced have been made of varying pitch. These, therefore, I distinctly disclaim; but

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The continuous spiral guide, of uniform pitch, forming a. continuous channel in vertical or, inclined water-tubes of steam-boilers, substantially as set forth end described.

2. -The V-shaped piece e, substantially as described and for the purposes set forth. I

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

- PETER M. KAFER. Witnessetz.

Gmnnss H. W. Humvee, Cannes Moan-sun.