US935343A - Rotary engine. - Google Patents

Rotary engine. Download PDF

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Publication number
US935343A
US935343A US31306606A US1906313066A US935343A US 935343 A US935343 A US 935343A US 31306606 A US31306606 A US 31306606A US 1906313066 A US1906313066 A US 1906313066A US 935343 A US935343 A US 935343A
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Prior art keywords
pistons
casing
pressure
rotary engine
rotor
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US31306606A
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George Westinghouse
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George Westinghouse
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/001Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle

Description

G. WESTINGHOUSE.

ROTARY ENGINE.

APPLIOATIOH FILED APB.. 21. 1906.

Patented Sept. 28, 1909. 4 SHBETS-S-HBBT 2.

W/TNESSES.

G. WESTINGHUUSE.

ROTARY ENGINE.

APPLICATION FILED APR. 21. 190e.

935,343. Patented sept.28,1909.

4 SHEETS-SHEET 3.

G. WESINGHGUSE.

ROTARY BHGINE.

PPLIUATIOH FILED APR. 21. 1906.

atenie Sept. 28, i909 i BEBETS-SEBBT 4.

WITNESSEIS IN1/ENT@ y C? y. im M im fh), #LQ-WA' A TTORME y.

t ionen ESTING'rHOU OF PITTSBRG, PENNSYLVANIA.

nonne? ENGINE.

Specification 'from 'may concern.'

' laown. that I, Geenen TVRSTIN@ eitinen ot' the United States, and a Dii'f.t.slnug, in the county ot' Alletate et' .Pennsylvania7 have made zt'ul lnventionin Rotary Eu- 'eration relatee to rotary e" thieA invention enieient, relatively by engine employing` pistons. y her el ieet ot ofI enginee.

the producsiinple and sliding or this invention is the eolnpound engine of this 'ent and Compact.

is the produetion ot' sim` gover ling or controlling fines ot' thufela'ss. i A=er ohja-et is the otthia class iu' wl e are reduced l'n'loduetion el iieh the ends ot' to a minimum size. and other ohjeets, which will f aprliear to those skilled in this art, I hy means; ol1V the' apparatus'described .speeitieation and i aeeonipanying and forming a part rizl aiinjlieation, and throughout which ilar elements are denoted hy like characthe drawings, Figure l a `Sectional elfen on the line in Fig. 2 --.lly on the lines B- and C-C Fig'. a eroflirseetional View 3.1 the line 'lL-l) in Fig. t; Fig. 3 is Qsnseetiomil View taken' on the lines ul. l'hl'fl in lllig. .ig-and Fig. l is a 'tial Section oi a portion of the governing employed in this engine 1li-H ot' Fig. 2. The engine Consists of high and low pres- Sure por-Lione arranged within a Common whieli cousin-ts ol a eylintler or easing o proiult with a hase portion 6 and cored ehamher 7 connecting the high and pres-sare portione. Endpieee or heads i) are bolted otherwise Secured withl or' the .asing and through these aft 1.0 extends. The shaft v10 is harp l within suitable oall ietl in Standards, heads. The hall hv n'ieans of Suit- -IJJ i [insti-ated in the ta ken on the iortionawithin the upper half Ito form a` of Letters Patent. appn'cam med .lip-n1 21, 190e.

l i l l l portion 2l of which truly in the nature of Patented Sept. 28, 1909. erial No. 313,066.

sure portion ot the casing, and low-pressure drinn 15 is Carried by shalt 10 within the lowpressure portion ot' the easing. Each drum is formed in the nature of a Sphere', or' more sphere, the lenel, walls'of which a re perpendieularto the shaft-axis. are turned in the drums and extend from end to end thereof. The drums, which, after being machined, are in the form of a double truncated sphere, in their formation, are east in the nature of spheres with openings `17 cored therethrough from end to end for 'the purpose shaft hole is drilled through the drums from end to end, and the ends are lfared off in two planeo perpendicular tof'the axis 'ofthe shaft. After this is done', the drums-are"ehueked and the pixton- 'aya vare en t in a lathe. will he Seen that this forms the bottom eaeh piston-way of concentric with the outer periphery ot the drum and is an extremely cheap and simple method of manufacture. The drums are keyed or otherwise secured to Shzy ft; l0.V

- The Walls at the ends ot' both eylinders extend into the eyliinilers in the nature ot sleeves which surround the Shaft and whose outer cylindrical surfaces 18 are eeeentrieI thereto. A bushing 19 loosely surrounds eaell rylindrieal'eeeentrie surl'ave. 'and7 resting on the bushing ie a flanged :sleeve )0, the flange is formed 'Separately therefrom and secured thereto hy means of screws Between the outer surface ol each vtlange 2l and the inner wall of the easing, which at that point Vis cylindrical, Splitpaeling rings 23 are interposed. These pael'hg rings tit in grooves out in the flange portion and bear singly against the inner surtaee ot' the cylinder and remain stat-ionin relation thereto. Slidably Fitting within each piston-way is a pieton 24 whose inner Surface iS eoneave to conform to the bottom ofthe way. The outer face of each piston, which is Convex, is grooved to receive packing stripsor members 25. The.` packing strips or meml'zers for each piston are forintd in three tral portion of which is riveted l(ir-otherwise secured to theqiiiston, while the outer portions are tree to play in 'and out radially, and are held out'hy centrifugal force, to pael; the joint hetween the cylinder and pieton.

The end of each piston ia squared. as

a double truneated Piston-ways 1G' of cutting down the weig'li'tlv A parts/r portions, the eenrespective ways .torce tends the piston ends are eccentric to the paths of travel of the pistons, a ground tit is constantly. maintained. Owing to the eccentricity of the sleeves 20, with relation to the shaft, the pistons,when not moved by centrifugal force, are moved in and out radially, relative tothe axes of the pistons, and into contact with the inner surfaces of the cylinders.

ln order to reduce the wear between the packing members 25 and the inner surfaces of the cylinders and to equalize the strains due to the centrifugal force of the pistons, rings 27, fitting within cylindrical chambers 28 eccentric to thc shaft, are utilizedv These vrings bear against the outer ends of all of the pistons at their centers and are caused to float within their housings by means of steam pressure admitted behind them near the steam inlets to the high and low pressure sections. lhe rings are provided with packings 29, located at opposite ends, which tend to confine the steam behind the rings and maintain an equal steam pressure between them and the back walls of the chambers.

The pistons are `kept tight withinV their by means of packings 30. Each of these packings consists of a circular V-shape'd channel cut into the side of the way and into which is inserted a prismsl'iaped metal packing strip. Centrifugal to move this radially and on account of the outer angle. of the wall of the strip-slot the strip is forcedin constantcontact'y with the piston by centrifugal force and steam pressure. The shaft 10, .which is stepped and langed as illustrated in Fig. 1 for obvious purposes of mamifacture, earries a series of packing rings ill which bear against the inner surface of the cccentrics;

'lhe steam or other motive fluid for operating thc engine enters the high-pressure cylinder through a valved inlet port 33,

. which extends around the cylinder, as Shown by dotted lines at 34, Fig: 2, and 1s provided with a regulating valve 35. The steam after entering the inlet port expands in the gradually-increasing steam space, rotates the high-pressure drum in the direction of the arrow in Fig. 2 and exhausts'through cxhaust port 36, shown in F ig. 2 partially in dotted lines. The exhaust steam from the higl'i-pressure` cylinder passes through the receiver chamber 7 to the inlet port 37 to the llow-pressure 'sectioii, and, in passing From the factV through the low-pressure section Idrives the drum l5 inv the same direction as drinn 14 and exhausts through the exhaust port Q8.

ln order to prevent any leakage of steam to the atmosphere around the shaft at the opposite ends of the engine, ports or ducts -lO lead from annular leakage grooves 41,A

formed at the center of each end packing device for the shaft, to the exhaust port 3S for the low-jnessure cylinder.

Inlet valve 235, which is illustrated in Fig. l. consists of a double-beat. p uppet valve provided with a cylindrical projection y-l2,which.

extends into a cylindrical chamber formed m the valve 'casmg to receive the same. 'lhe valve stemjl-l-l, which extends through a suitable guide, is surrounded by a helical spring l5 made adjustable by means of adjusting nuts lo threaded on said stem. '.lhe cylinder 42 may either loosely tit into thc cylindrical chamber 43 to provide a leakage passage around it or, as shownin the d awing, a leakage port 4T, adjustable bymeans of a valve screw 4S may be provided, in order that the outer end of the cylindrical projection at times will be subjected t0 a pressure equal to the pressure withinthe valve casing proper. When the pressure in the chamber 43 equals the pressure in the valve chamber proper, the valve is balanced, except. for the arca'of the under these conditions, s ring 45 yieldingly lirts and holds the valve rom its seat. so that -tcam will be admitted through the inlet port of the engine. The chamber 43 below cylindrical projection 42, and passages 49, connects with drilled holes 5l connect annular recess 50 with a passage 52, located centrally of the shaft, and which, by means ofradiallydrilled holes 53, and an formed in the shaft, and a passage 55, drilled through the upper )ortion of the casing, connect with the recelver chamber between the two cylinders. As, by meansof the ports and passages just described connecting the chamber 43 with the receiver chamber, the inner cud of cylindrical projection 42 is normally subjected to a pressure `lower than the pressure Within the "alve casing proper, owing to the fact that leakage port 47 is adjusted so as to be smaller than the ports 49, etc., thel valve 35 is held to its seat and the steam supply to the high-pressure cylinder is cut olf.I Spring 45 is when the ports and passages 49 are open' to the receiver pressure, the pressure tending to close the valve 35 will overcome the tendency of spring 45 to open the valve'.

The engine shaft. l0 has a hole drilled at its center and extending from its end adjacent to the high-pressure section tothe radial ports or passages 53. fithin this hole suitable bushings (Sl and ('2 are driven and a pin valve stem, and,

by means of ports an annular recess 50, formed in the shaft 10.' Radially-j annular recess 54,

adjusted so that l and Qcigmiisl; ille ends of i() iii/uw the :ame

)lllif ih@ Shaft. The npposile mid plie i'- said ring is locutd,

Chfmihei' 1|; ,h

` engine. (i Pasing, zi mitmii 'omy l Giunchi lm'zii'efl il'hizi Si id Casing, movable pislmis mmiiimd ou suini mm eleiiieiii', :md :i llmf'inw lzai'mmiiiiig said wim nml Q11- oqmilly npplimihh lo Qil'lmi' vrmipmiml m' .simple moi'ms 01' pumps :imi ill-nt lh@ Sumo l5 110i limited io :i (foiiipomid mmm' 0i* pump. Q imi (fi'msiilvled ln'oml enough i0 iucliiiie either single or compound zi zicxnilzmce with the Hemi Siiiliiw: l have ilewi' fili-4l. s.

prises a floating ring and a flanged ring con- I -centric therewith and provided with packing strips which engage the interior tace ot said chamber.

1Q. In a rotary engine, a casing, a chamber within said casing', a rotor element located within said chamber, lradially slidable pistons mounted on said element, a floating ring surrounding said rotor and engaging said pistons, and a iiuid packing between said ring and said casing.

13. 1n a rotary engine, a casing, a rotor element, ra'dially movable pistons carried by said rotor clement and a floating ring engaging said pistons and located between said pistons and said casing.

14, ln a rotary engine, a casing, a rotor element, movable pistons mounted on said element and a ring engaging the outer ends of said pistons,

15. In a rotary engine, a casing, a rotor element, movable pistons mounted on said element, packing strips located between said pistons and said casing and a 4floating ring engaging the outer ends of said pistons.

16. ln a rotary engine, a casing, a rotor element, movable pistons mounted on said element, packing strips located between said rotor and said casing and a tloatiug ring engaging the outer ends of said pistons.

17., in a rotary engine, a casing, a rotor element located eccentrically within said casing, pistons carried by said rotor,'a member located eccentrically ot said rotor and engaging with said pistons to move them radially and a lioating ring engaging said pistons and located between them and said casinof.

18. In a rotary engine, a casing, a rotor element located eccentrically within said casing, a .plurality of independently movable pistons carried4 by said element, members located at each end of said element for moving said pistons adially and means engaging said pistons and operating to counteract the centrifugal force.

19. In a rotary engine, a casing, a rotor element located eccentrically within said casing, a plurality of independently movable pistons carried by said element, means, located at each end of said element, for moving said pistons radially, and means, common to all ot said pistons, for counteracting the centrifugal force `and decreasing the 'friction between said pistons and said easing.

20. ln a rotary engine, a casing, a rotor element located ecccntrically within said casing, a plurality of independently movable pistons carried by said element, means for n'ioving said pistons radially of said element and means, common to all of said pistons, for counterbalancing the centrifugal force and relieving the friction between said piston and said casing.

21. ln a rotary engine, a casing, a rotor element located within said casing, a plurality ot independently movable pistons carried by said element, means for moving said pistons radially and means, common to all Aof said pistons, for counteracting the centrifugal force.

ln testimony whereof, l have hereunto subscribed my name this sixth day of April, 1906.

GEO. .VESTTNGHOUSE. Witnesses DAVID llf'iLL-IAMs, E. lV. l\'lcCALL1s'rnR.

US31306606A 1906-04-21 1906-04-21 Rotary engine. Expired - Lifetime US935343A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418081A (en) * 1943-10-02 1947-03-25 Christa Smith H Spherical fluid operated rotary motor of the axially moving sliding vane type
US3232173A (en) * 1964-02-27 1966-02-01 Cooper Bessemer Corp Air motor
US6599113B1 (en) * 2002-02-01 2003-07-29 Charles Matthew Lee Independent vane rotary gas compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418081A (en) * 1943-10-02 1947-03-25 Christa Smith H Spherical fluid operated rotary motor of the axially moving sliding vane type
US3232173A (en) * 1964-02-27 1966-02-01 Cooper Bessemer Corp Air motor
US6599113B1 (en) * 2002-02-01 2003-07-29 Charles Matthew Lee Independent vane rotary gas compressor

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