US903454A - Elastic-fluid turbine. - Google Patents

Description

G. W. DAKE. BLASTIG'FLUID TURBINE. APPLICATION FILED APB.23,1908.

903,454. Patented Nov. 10, 1908.

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UNITED STATES PATENT OFFICE. v

OHARLES W. DARE, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO THE BAKE-AMERICAN STEAM TURBINE UUMFANY, (IF GRAND RAPIDS, MICHIGAN.

Ensure-rum: runnmn.

Specification of Letters latent.

Patented Nov. 10, 1903.

To all whom it may concern:

Be it known that I, CHARLES \V. Dane, 11.

' citizen of the United States, residing at the city-of Grand Rapids, county of Kent, State of Michigan, have invented certain new and useful Improvements in Elastic-Fluid Turbines, of which the following is a specification. a

This invention relates to improvements in elastic fluid turbines.

The objects of my'invention are: first, to increase 'the efficiency-moi elastic fluid turbines bv a more effective form of the buckets in combination with the nozzle; second, to lessen the cost of construction both in the economizing of material and in lessening the labor cost of production; third, to provide a construction which is readily assembled and disassembled, and in which' injured parts can be quickly substituted or repaired; and fourth, to improve the specific details of construction of the bucket.

Further ob'ects will definitely appear from the detai ed description to follow.

I accomplish the objects of; my invention by the devices and means described in thefollowing specification.

The invention is clearly defined and pointed out in the claims.

In the accompanying drawing I illustrate such parts of an elastic fluid turbine as are necessary to the ,pro er understanding of my invention, in whic Figure 1 is a sectional view transversely throu h the rim of a turbine, showing a detail of the rough blank in the first step of the rooess of manufacturing the buckets of my improved turbine, the view bein Y taken on a plane indicated by the section l-fines ZZ of Figs. 6 and 7. Fig. '2 is a similar sectional view showing the-next step of the-method of manufacture in which the annular groove for the buckets has been formed in the blank. Fig. 3 is a similar sectional vicw, showing the groove formed for receiving and seating the partition walls between the buckets. Fig. 4 is a detail elevation view of one of the said partition walls or plates. Fig. 5 is a detail sectional view similar to that appearing in Fi it. 2 and 3, except that the rim of the tur nor is laid on its side, showing the partition nulls in place in the lllll. Fig. (3 is a detail View of a portion of the rim of a turbine and nozzle in position, being a. side elc- .vation looking squarely at the side into the buckets. Fig. 7 is a. detail sectional view of the structure as appearing in Fig. 6, taken or. a lane corres onding to the curved line X--l of Fig. 6, coking in the direction of the little arrow. Fig. 8 shows a modified arrangement of the turbine wheel with the buckets on the periphery in place of on the face; and Fig. .9 is a cross section throughthe turbine nozzle 10.

In the drawing,. similar numerals of'reference refer to similar parts throughout the several views.

Considering the numbered parts drawing, a bucket segment or ring 1 is formed in-the manner usual with my construction of elastic fluid turbine engine with a suitable shank with bolt hole therethrough for attachment to the central disk nothere shown. In the face of this segment or ring, I cut a roove 2 which is in form one-half 'of an elipse, the ellipse being divided on the long axis. This broad groove 2 is read-- ily turned outafter the'turbine wheel has been assembled with the ring 1, either a full or segmental ring. After this has been done,

of the I cut grooves 4 transversely across the ann'ular bucket groove at an angle of about 20 degrees, by a suitable rotary cutter. The ellipse is of such form that when the cutter is set atan angle of 20 degrees it forms a true circle, so that the tool cuts an even groove out of the back wall. This tool, in cutting the metal, turns up a thin bur. After the groove is'cut, I cut a notch 5, which is a continuation of the groove 4 out through the edge of the outer portion of the ring to receive a lug on the bucket partition wall.

The buckets are 'formed by inserting semicircular pieces of sheet metal 7 with lugs 5 formed at: the upper outer angle within the groove 4. When these se1nicirculardisks are punched from a sheet of metal, a. bin S is raised around the edge of the some from the action of the punch, which bur I :nn careful to preserve on this sheet metal partition wall. It is utilized in the proper securing of the said partition wall within the bucket groove 2. 'lhcsemi-circular partition wall7 is inserted in the groove with the *kted down intothe' notch 5, whenthe partifirst I tam theminsuitable slots.

' ring may be roughly formed to shape'an Y ,tion walls can then be inserted by the action ofa light tool, forming a comparatively indicated in Figs. 5 and 6.

-' elastic fluid-most efl'ectively into the buckinet'al bucket partitions, which are made proper strength onlybeingrequired.

'inserted' in transverse grooves bent .by'the rubbing action of a tool, somewhat like the spinning of metal, to engage the bur on the semi-circular partition plateand this very eflectively retains the said artition in place. The lug 5' is then rivt-ion wall is'efiectively and safely held in place. When this is done, the turbine wheel isput intoallathe" and the partition walls turned oil to' make them even, and a broad notch' 7 is formed in the same towards the receiving end .of the bucket, the discharge end of the bucket being indicated at 6. The

osition of this bucket partition 7 is clearly A nozzle 10 with itsend' cut'oblique is arranged in this broad'notch 7 to deliver the ets, and, as this construction enables Very .thin partition-walls to be placed between the buckets, the bucket capacity of a turbine is correspondingly increased and the angle of the nozzle and the position which it occupies, projecting into the notch, enables the elastic fluid to be thus delivered most eflect- The result is a very marked increase efiicieny of the entire engine.

In Fig. 8,'I' have shown how thebuckets can be arranged on the peripherv-of a turbinewheel, in which event I refer to form lugs 5 on both sides of'the ucket and re From this de scription it will-be seen that the hue 'e turned true. The bucket groove'2. may then be formed therein by the use of a heavy tool, cutting the metal very rapidly; .The partishallow groove to receive the thinflsheet from punchings. The pnnohings should not be finished, because the buris utilized as a partof. the attaching means. This forms the buckets very economically and very ef fectively, andby then shaping the buckets with the broad notchto receive theobIique-r ended no'zzle, the fullbucket capacity and the most eifective delivery of elastic fluidis secured. Aside'froni economy in construc: tion, greater efliciency in the elastic fluid turbine is thus secured. The partitions 7 can bereadily withdrawn and repaired or new ones -in serted,'a tool of Having thus des ibed my invention, what I claim as ne'wan desire to secure by Let-' ters Patent is: v v

- 1*. In an elastic fiuidturbine, the combination of the turbine wheel, wi h' a -bjucket ring with an annular groove to 10d therein of semi-elliptical cross section on the long axis; seirsi c irc iar rest metal basket rtitiens in tlie'bucket into a notch inthe .w purpose specified.

groove and set at .an angle theret f Said" sheet metal partitions having-a bur formed on their edgbe and being retained by coinpressing" the ur on the edge of the said transv rse groove against the same, the saidpar tit" ts having a lug extending to one side and riveted'into a suitable notch, t e said 'bucket-s'partitions having a broad not" h 7 in their nee edges; and a nozzle with its. end

cut oil obliquely ,to', conform to the said notch, coacting substantially as described and for the purpose 5 ecified.

2. In anelastlc flui 'turbine,'thecombination of the turbine wheel, with 'a bucket' -ring with an annular bucket groove formed;

thereinsemi-elli tical in cross section on the long. axis 0 the ellipse; substantially semi-circular sheet metal bucket partitions inser ed at an angle in the'said bucket" groove and ret-ainedthere by suitable means,

a broad notch being formed inthe free ed e of the'sai'd' partitions; and a suitable nozzle with its end cut off oblique to; conform 'to the said notclrin said .partition's, coacting substantially: asdescribed and for the 'fpurpose specified.

3.111 an elastic turbine, the'combina -i tion of the turbine-wheel with a bucket ring with an annular buck t groove formed theret'ransverse 'to'the said-bucket groove in a suitable notch'in the, wall thereof; a burformed on the said sheet metal a-rtition, enagedbyva bur on the ed e 0 ,the groove, eing compressed against t e same, coac'ting 4; .In an elastic fluid turbide the combination 'of'theturbine wheel with a bucket, ring with an annular bucket groove formed there in; a sheet metal bucket partition arranged transverse to the said .bucket. groove in a suitable 'notc ,formed on the said sheet metal aged by a bur on the edge 0 ei'ng compressed a ainst thesame, an expartition, en-

tension .or lug of t e said partition beingriveted, into a notchnin the wheel, coacting forthe purpose specified. 5. In an elastic fluid turb ne, the combination of the turbine wheel with a bu'cket'ring I I with an annular bucket groove formed: there I ingja sheetinetal bucket-partition arranged.

the groove, I

in; a sheet metalibuc et partition'arranged in a the wall thereof; a bur transverse to the said Y bucketzgroove a' suitable notch in the wall thereof, an extension or lug of the said artition beingrriveted In witness whereof, I my hand and seal inlthe presef ceuo witnesses, p a;

CHARLES BAKE. -[i..s'.]

Witnesses: r

wa s. a Jngr NI; rm-swearin eel, coaeting for the

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