US100294A - John howarth - Google Patents

Description

cited States esta can.

Letters Patent No. 100,294, dated .March 1, 1870.

STEAM BLOWER AND EXHAUSTER.

The Schedule referred to in these Letten; Patent and making part of the same.

To whom tt fmayconcern:

Be it known that I, JOHN HOWARTH, of Salem, county of Essex, and State of Massachusetts, have invented a Combination Blower and Exhauster; and do hereby declare the following to he a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which Figure 1 is a longitudinal section of my apparatus, and

Figure 2 fig. 1.

The object of my invention isto produce means by which I can utilize steam to its fullest extent in drawing into an apparatus the largest' volume of air and gases, and discharging it with the degree of force requisite to the accomplishment of the particular result sought; that is, to produce au apparatus by which I is a cross section of same on line x y of can secure an increased blast power from a givenl weight of motor, or best create avacuuin in a given time and-with the greatest economy of steam. y

The nature of my invent-ion consists in adjusting a series of tubes, regularly increasing in diameter, set in a line as to their axis, with a space between the one and the succeeding, so that in looking through the series from the least in size to the greatest, there appears to be but one tube, telescope form, in .a frame, so that steam is admitted to the vsmallest tube by an induction-pipe from the boiler, and passing through the seemingly one tube, air and gases are admitted through the succeeding spaces between the tubes, where air or gases are united with and carried by the steam y to the largest end of the tube and discharged, either as a blast or as au exhauster, when the induction end of the apparatus leads from a vessel; and

The nature of my 'invention consists, further, in uniting the volume of combined air and steam attained through a series of tubes with a still further quantity of air by means hereinafter described.

In the drawings- A A is a pipe, which sustains and incloses the ap paratus hereinafter described.

- This pipe has anges a a at each end, and is smaller in diameter tiom b to c than from cto d, thus forming a neck, b c.

B is a frame, in which are held the tubes 1 2 3 4 5 6 by means ofprojectious or clamps E E. These tubes are heldin a line, their 'axis being parallel with the axis of pipe A, and are bored through their horizontal centers,-` number l being the smallest of the series, and thel others increasing in diameter regularly from l to 6.

C is an' induction-pipe leading from a boiler to tube No. 1.

D is a slet-screw holding the discharge end of the apparatus in its propel' position within pipe A.

The projections E E arealso clamps, and each has set-screws u n; thus the tubes 1 2,3, &c., are compressed and firmly held in their position, which, by the a space of one-sixteenth of an inch' between each tube and the succeeding one. These dimensions, of course,

are given for example, but I have found by experiment that they serve the purpose well.

Steam is represented by dotted arrows, and air or gases by full line arrows.

Operation.

Steam from a boiler enters the apparatus through induction-pipe C, passing its tube 1 att with a velocity comparative with the weight of steam; it passes into tube No. 2 with the same velocity'. 'lhus is created about the space between tube l and 2 a vacuum, which is filled at once by air coming inA at k, and the air is combined with the steam within tube No. 2, and parl takes of the steams velocity. This volume of combined steam and air or gases 'passes on to tube No. 3, where alfuller supply of air or gases is taken through space between No. 2 tube and No. 3, and so on through the whole series, until the volume of combined steam and air or gases is discharged from the outer tube at K S into the neck b e of pipe A.

At thev point t t the already acquired volume receives a fresh quantity ot' air or gases, which combines with the acquired volume, and this increased volume Vis discharged at mouth h of pipe A, thus securing the The construction of pipe A at this point favors or se- I cures this result, for it will be observed that by diminishing the diameter of pipe A from c to b, and allow ing'the discharge end of series of tubes to projectintol their diminished portion of pipe A, I have a continuance of the series of tubes, but on an enlarged scale.

The limit-to whiehthe number of tubes can be eX-, tended is the vacuum force to absorb air or gases, and

the force required to expel them with the requisite velocity from the apparatus.

The number shown is used to illustrate my invention, for I use them extended to ten or twelve.1

The vacuum force and blast force are diminishedas the number is increased, or as their diameters are increased relatively to each other.- I find itimportant not to admit too much air or gases to combine with steam at once, lest the velocity of the steam should be reduced too suddenly, for it is my aim to combine and utilize the largest possible amount of air or gases and Steam and it' the whole quantity of air and steam were permitted to come together at one point, the ve locity of the steam would be arrested at once, and less air or gases would. be moved by a given amount of steam.

I can apply this apparatus to a great variety of uses, and in many different forms, some ot' them requiring new combinations, which I leave for further patents; but as a. blower or exhauster, wherever such may be used, its utility is beyond a doubt, for, having carried it through a series of actual experiments, I speak from experience and not theory.

I am aware that the specic arrangement of tubes described and shown, alone, is not new, nor do I claim such arrangement; but,

.as described.

3. The combination of tubes l `2 3, '&c., frame B,

' pipe A, and induction-pipe C, allarranged and operating substantially as herein set forth.

1n testimony whereof -I have signed my name to this speeication in the presence of two subscribing witnesses.

JOHN HOWARTH.

Witnesses:

CARROLL D. WRIGHT, AUSTIN S. HOWARTH.

Images