US848587A - Elastic-fluid turbine. - Google Patents

Description

PATBNTED MAR.- 26, 1907. G. W. BAKE. ELASTIG FLUID TURBINE.- APPLIATION FILED MAR.22, 1906.

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@h mmwEn-WEE WTNESSES Nrrnn sT'ATns-PArEN-T OFFICE;

CHARLES W. DAKE, oF GRAND nAPrps,Micl-GAN.

ELAsTlC-FLUID TUBBINE.

.To all whom it mrtg/concern.-

Be-lt known that I, CHARLES W. DAKE, a citizen of the United States, residing at Grand Rapids, in the county of Kent, State of Michigam have invented certain new and useful Improvements in Elastic-Fluid Turbines, of which the following is aspecication. This invention relates to improvements in I' elastic-Huid turbine-engines; and it relates more particularly to improvements in the conformation of buckets. The objects of the invention are first, to increase the bucket capacity within a specified area, and, second, to provide an improved construction and arrangement of buckets for elastic-fluid turbines in which the energy of the jets is utilized to the fullestY degree in actuating the turbine with the minimum loss on account of friction of Huid in the passages and parts.

Further objects and objects'relating to the details of construction will definitely appear from the detailed description to followf I accomplish the objects ofmy invention bythe devices andv means described in the following specification. 1

The. invention is clearly defined, and4 i pointed out` in the claims.

' Portions of an elastic-Huid turbineillustrating. the features of my invention are' clearlyl illustrated in the accompanying drawing7 forming a part of this specification, inwhichj Figure 1 is a detailed sectional view -through 'a nozzle and rowof buckets em-- bodying the features of my invention, taken on a line corresponding'to line S S of Fig. 2.

Fig. 2 is'a plan view looking at the faces of said series of buckets, the nozzle bein omitted. y 3 is a detail sectional viewo one of the composite buckets, taken on line a:

= of Fig. 1 and Fig. 4 is a.detailed view of a'single bucket as embr'aced between the lines Z' and Z of Fig. 1 looking .directly into' the mouth ofthe bucket, as indicated by the little arrow on the said Fig. 1.t

In thev4 drawings similar numerals o f reference refer to similar parts throughout the several views.

vA ortion'of the Iturbine-diskl 14 is illuls- Hated) with the U-shaped recurved buckets 4 2, machinedinto the side'thereofb y suitable ,milling-tools. So far as this invention is concerned, however, it is 'immaterial how these buckets are formed. QA, secondary 4Tbucket isforjmed bythe dividing-wall 4 Specification of Letters Patent. a Application filed March 22, 1906. lSerial No. 307,456.

tom ofthe bucket 2.

not pertain tothe nozzle construction.

Patented March 2e, 1907.

which is arranged within the bucket 2,'corresponding in contour to the bottom thereof, and it is separated from the curved bottom wall 5-of the said bucket 2 in about the proportion illustrated in Fig. 1.

A portion of wall 4 is cut away, as at 4i', to

permit the passage of steam or other eX` ansive fluid past the said wall ,4 into the otvA passage 7 is thus formed at the intakeside of the bucket 2, Where the fluid passes behind the curved wall 4 of saidbucket 8'. The intake-passage is somewhat contracted; but thel side of the bucket is formed at an angle, as indicated by' the dotted line '6, (see Figs. l and 4,) so that the iiuid can expand to the full Width of the bucket by the time it reaches the bottom thereof,and thus secure the best effect of the impact. It will thus-be seenthat `the buckets 2 and 3 really constitute a composite sinfor increasing the efficiency of the jet of glebucket` provided with two bottom walls i steam or elastic Huid and increasing the surl faces on which it reacts in drivingtheturbine-disk within the space usually occupied by a single bucket. ets are separated from each other by thedividing-walls 8, the Walls 8 having circular notches. at their center which accommodate the shaft or shankof the milling-tool used in for'ming the same, lthat being so far as I am able to discover, the best method of form- These composite bucking the main parts of these buckets, although they might be formed otherwise so long as the contours I have described arel preserved. I have shown a nozzle-bowl 1 1 and nozzle I0' in a conventional way, as my invention does I have shown my composite buckets as provided with two curved walls; but it is perfectly clear that that number could be increased to suit different circumstances.-

In the drawings the long curved arrows show the direction of the iiuid through the buckets. The same is delivered at a point corresponding to the upper side of Fig. 3 in the direction of the long straight arrow apearing there, and as the jet of Huid passes into thev buckets itis divided, one part reacting againstthe wall 5 of the main bucket 2 IOO' and anotherpart reactin against the wall of the inner bucket 3.' j he steam or elastic Huid-is thus provided with an abundance ofsurface vfor reaction, and its fullforce is `util,-

ized in close proximity tothe mouth of the v nozzle. ,The machine discharges outwardly, y

as indicated in the said Fig. 3. The bucket,

it Will be observed, can be forrnedeither on the periphery or on the Side of a turbine-disk,

and the advantages of my invention can be substantially secured. I prefer the face of the Wheel. i Y 1 Having thus described my invention, what I claim as new, andl desire to secure by Letters Patent, is-` l. In'anelastic-luid turbine, the combination f a turbine disk or Wheel l, With a series of composite buckets arranged therein, each bucket consisting of a main bucket 2, With a curved Wall 5, and an auxiliary bucket 3 Within the same, formed by the curved Wall or partition 4, the said wall 4 be- A ing cut away at 4 to form a assage for iiuid against the Wall 5 of the mainbucket 2, the passage expandin at 6 and a nozzle arranged to deliver e astic fluid under pressure to impactand react lon, both of said Walls 4 and 5, as specified.

2. In an elastic-fluid turbine, the combination of a turbine disk or Wheel W'itha series of 3. In an elastic-fluid turbine, the cornbination of a turbine disk or Wheel; a bucket with a recurved Wall, arranged therein, with an annular auxiliary bucket varranged Within the said main bucket and having its inlet Within the Walls of the 'main bucket, with 'passages formed to deliver into both the main and auxiliary buckets troni substantially the same point anda nozzle arranged to deliver elastic fluid under pressure to sei,

cure its impact and reaction on the curved Walls of said buckets, as specified.

4. In an elastic-fluid turbine, a bucket of the recurved type, with a plurality of similar Walls, with inlet-passages thereto connecting within the Wall of the main bucket and a nozz'le arrangedto deliver elastic fluid to impact and react on the said Walls, as speciiied.

5. In an elastic-'fluid turbine, a bucket of the recurved type, with a plurality of similar walls, with inlet# assages thereto connecting Within the Wall o the main bucket,'the same being arranged4 to receive a jet of elastic fluid, coacting as specified.

6. In anfelastic-iluid turbine, the combination of a turbine-disk with main buckets of` the recurved type with an annular auxiliary bucket Within each of the said main buckets,

the said auxiliary buckets having their in- .lets Within the Walls of the said main buckets with a. passage or passages to deliver the iiuid to both the main and theauxiliary buckets from substantially the same point, to

secure its .impact and reaction on the curved i Walls thereof, as specified. I

In Witness whereof I have hereunto set my hand and seal in the presence of two Witnesses.

CHARLES W. [1.. s] Witnesses:

- FRED L. CHAPPELL,

CLARA. A. SABIN.

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