US1061648A - Blades. - Google Patents

Description

G. WESTINGHOUSE.

BLADES.

' APPLIoAflon nun AUG.'27,1910.

Patentedll Iay 13, 1913.

s ATTORNEY 1'11 FACT.

a ononen WESTINGHOUSE, on PITTSBURGH, PENNSYLVANIA.

f Application filed August 27, 1911;.- Seria1No..ti79 ,247.

Specification of Letters Patent.

, Patented May 1351913.

To all 'wlmm it may concern v Be iti known that I; 'GEORGE W'Esfrmo- HOUSE, a citizen'of-the United States, and a resident of Pittsburgh, in .the county of Allegheny and State'o'f Pennsylvania, have made a newand useful-Invention in Bladesf and Means for- Mounting Blades of which.-

- the following is a Specification.

My invention relates to blading andparticula-rly to turbine blading,- k An object of my invention is to produce a new and improved blading and also new and I improved means for assembling and mountin'gblades. w

. These and other-objects I attain by means of the blades and bIading illustrated inthe drawings accompanying.thisapplication and.

- forming a part thereof.-

In the" drawings, Figure l is a'perspective -viewof bladingembodyin'g my Invention shown; in connection With'a' portion .ofa 'blademoimting elementj. Figs; 2. and 3 are.

invention; I group'of blades taken alongthe longltud mal perspective views-of blades embody ng my Fig, 4 is atransverse section of a axes of the blades and illustratesa modifica f tio'n'ofmy invention.

. For'convenienceof' descripti'bn, -I have illustrated my invention m'connection with bla'des adaptedto be employed-in a turbine,

in which motive. fluid is delivered to a row of blades, 'andafter having traversed the of turbine,

blades isre-directedtan d re-delivered to the "blades: I do not desire to limitthe ap plication of myinventipn to blades for thls type nor to the arrangement. or. con

struction' illustrated, .andI desire-it to be 'understood that the drawingsar'e merely tee- 1mm:-

illus'trative-and' that various changes and modifieationsimay be made wlthout departthesplrit andscope of my inven- Referring a5 the drawi ngsf'each blade illustrated 6. The body portion islsubstantially cres-.--'

consists of a body portion 4", a" mounting portion 5-,.and a shroudin'g flange I cent shaped in cross section, being'provided; on one side Witconcave .workmg face-"7 v i and on the other side with a' convex working face 8. The oonjv'iex face i's divided into two portions by an intermediate spacing piece 9,, I which is formed integrally with the body portion of-the blade and which is provided with a convex face 10 adapted to en age the concave face oithe next adjacent bla again;

the blades are assembled n a. row.

. face of the operate with the flanges 6 of all the-other through the body portion of-theblades and assembled on the.

formed by axially with tween the mounting 1 tongue 14 isadapted to. fit-snugly into a slot ,15' formed in a mounting element 16, andeach blade is 'rigidly' and positivel secured a of rivets 17, which n versely extending}holes 18 provided'.' in the .tonguel of each blade and gistering holes 1 [-19 provided in the blade mQlIIIiGLDF The over-portlqnso v shrouding flange 6 provided at theend of each blade projects laterally beyond the convex face of the blade in the same'direct-ion I as the spacingpiece 95 and is provided" with a convex edgeadapted to engage the concave next'adjacent blade and to 00- blades to form a shroud forthe row ofhlades' whenithe blades are assembled in a row.

I contemplate assembling the bladesinto short segments prior to mounting-them on the'blade carry-fngelement, and 'to thisend I provide holes 11, which extend transversely the intermediate spacing pi'eces 9. I then assemblei several blades ton a binding member or pin12, which are shaped and'extends" through'th'e holes 11 in the blades. Th-Ipins 12 fit snugly into the holes 11 and are so arrangedjth'at' theseparate segments-may be -lblade: mount ng element.v into anorgamzed row, 'in'which thepins 1 2 all codperate. to hold the blades in placeand to laterally strengthen-the row ofiblades, I accomplish this byso arranging the ins mt-hat: they project beyond thel'ast bla eof s m nt at one end of the Se ment and dO'IlOt extnd'entirely throu h the final bladeat theother end of the segment. With this arrangementthe 1 projecting end ofthe pin of one segment extends into the:

hole..l 1 ofthe adjacent blade of the next; segment when thesegments are assembled in an annularrow. 1

The mounting portion 5 ofieach blade is Y piece of metal, the spacl'ng piece9 and the base portion fi-being the -,milling operation. The mounting portion consists of a shoulder 13 and-a narrow-tongue 14.-which projects'coj the body portion'ofthe blade. 'The'shoulder'i13-is soiiconstru'cted that it co; operates with the concave face. of I the next jacent blade andiiorms a spacing piece be ends of the blades, The

in place on the mountmgelementy means extend through transelement" a formed integrally with the bodylportion; 'in fact, each blade maybe milled out of a single fiangefi, the intermediate v pert esjs 1tsrmaes;m5 'sideof the -ton'guei e} couldffte Q-thinner: and; Sign the 1410 a'hla ea e pfiejdei' enmt W fl l'.

strength of bindingTmember could"- to; secure the'blades'. ofl' agrowag'ainst lateral working' passages'andagbindingmember'ex limotion." In: addition"tof'thigtthe pins 12 jtending,through-the bladesj-andrsai'd' meansi-zg firmly-thefbladesofeachsegment and ;-4}=In'combinationcwith 'ablade-mounting:

36] a a ldirectlonsjiiijthel blades illustrated" in the element, at'plurality of bladesprovided with ateral-istiffnessfjef- Having; t di'n place onv-the" What .1;A7lblzide PT S i g- '3 I .v thl-i 'in me eti pa'cingfi -pie e's' Zloca'ted between the ends' of j he bladesfand -fornied-. integrally therewith elinixtft' respe I 1=ljocatingthe bladesr. i n'...th ounting element gor, the g'blfade.

- andlS-drill'ed 2. Ablade-segmentcomprising-I pluralv 2' f{ntj'lof bla'desymeansformedintegrallyfitith J J 3 pparent-{thatthe; blades are l the-blades ford-iridingthe' passagesf between.

ach endfand at- -an'--;intermediate. =1-tl1e-blades'into' two 'sets of workingifpassages 7o po t ,etween'itheir'l'endsfwhen' theyarefin' and a binding member pnssfingthroughsaid, "Iilflfij an the; blade' mounting element and {means for securingzjthe,blades 'together;

that the jfianges' 16, the fintermedjiate is'pacing' :f 3. A blade segment .comprifsi-ng afplumb and 1 the base-portions '5' co6perate: ".ityfofblades, manger dividing t-hepas- E";

thithel jeoncave iace'spf. theladj aeent' blades 5 sages "between the blades into two? sets of-fl organized structure, andedd to the lateral mounting p'ortiopS,j-' and shro ding; flflan'gesj II ifin s ix h 'il d s;.gThe" intermediate vloca at 0PP 1 i ofrth blades n pacing:ipice 9, in addition to spa'cing the 'means extendingthroughfthebladesQ'andh v d r es divide. the--"1assages;between the located betWeensaid-flange's and saidr n( unt- Iade intoitwo. sets (if-working liassages mg p r -i n for se uringth mqtogether;-.-'--

h which'th'e fiiiid flo'wsid-opposite 5. Infcombinationiiiith a blademounting ."draiwings." The-flangesj fi, spacing pieces" 9- integrally formed spacingpieceslo cated"at a jd-fthesshoulderf13oftheblades are preftheir outer flor-free ends, and intermedia't ej ereb1 l sp-{formed that theblajdes' occupy- 'spacing pieces' located bet'wee n'ther outer ends a 1 rad iapositions when 'assembled'in segments. and themounting'end's ofthe b'lades; means In -F .ig.' ij4 I [have ';illust-ra ted."blades" in :for securing-said blades to'said mounting ele-' w jthef'shroudingiflangesti are-provided ment-"anda binding member extending with.holes flIfthrougli which-a binding memthrough said spacing pieces for securing the of theblades-shown in Figs-1,2 and 3. I

bet pi1122feirtends. The construction of blades togethe v o g I the bladesishowninrFig. 4 issimilar to. that 6. In combinatlon With a blade mounting '95 element, a plurality of blades,- a binding- 7 It. i11 b nt th t, th t r d member extending. through the outer or free "of theblades maybe flanged and secured toends of the blades, means for securing said I gether wi-thout the necessity of providing blades to said mounting element-and a bindthe intermediatespacing pieces 9,"and withing mem er x en ing r gh h bl des I00.

I out thejnecessity of providing intermediate and loc edbe we s d o n i g me ns binding member 01' pin 12. .Itwill alsofbe and said first mentioned binding member.

apparent that I may employ two u mo e 5 In testimony whereof, I have hereunto binding members 22 at" the outer ends of subscri y n m thlS 23rd day Of the blades, or that I may employ'two or August, 1910., moreplns 12 extending through'the inter- I medlate portions of the blades. With some GEO. WESTINGHOUSE.

Witnesses:

C. W. MOGHEE, E. W. McCALnIs'rEn.

constructions I may find it preferable to rovnde two binding members 22 in place M the single member illustrated, since the flanges Copies 9! this patent may be obtained .for five cents each, by addressing the Commissioner of Peter" Washington, D. G.

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