US739288A - Rotary engine. - Google Patents

Description

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No. 739,288. PATENTBD rSEPT. 22, 1903.

' J. CADOO 6L J. M. VAN WHY.

ROTARY ENGINE.

APPLIOATION unanime. 9, 1902.

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i -T T- No. 739,288. PATBNTED SEPT. 22, 1903..

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//////////////////// l I (I ,Um-ie t'STATES Patented September 22, 1903*'.

PATENT OFFICE.

JAMEs H. oAooo AND JOSEPH M. VAN-WHY, or ELMIRANEW YORK.

RQTARYENGINE.

sPEcIFIcATroN forming pare or Letters Patent No. 739,288, dated september 2e, 1903. Application led December 9, 1902. Serial No. 134,597. (No model.)

T all wiz/0m it may con/cern:

Be it known that we, JAMES H. CADOO and JOSEPH M. VAN WHY, citizens of the United States, residing at Elmira, in the county of Ghemung and State of New York, have invented new and useful Improvements in Rotary Engines, of which the following is a specification. p

-Our invention relates to improvements in i rotary engines, and more particularly pertains to that class in which a series of cylinders arranged side by side and the pistons carried thereby'are mounted on a common shaft.

The object of our invention is to provide a rotary engine in which the expansion of the.

steam is more eifectively'utilized than has 'heretofore been accomplished.

Another object of our invention is to arrange several cylinders having pistons mounted upon a common shaft and to so arrange them that a separate piston is being acted upon by the direct force-of. the steam during each quarter revolution of the shaft, and thus giving a continuous pressure indirectly to the shaft. p.

A further object of our invention is to providea rotary engine in which all steam-pressure within the cylinder is taken o of the shaft upon which the pistons are mounted, .and thus reducing the resistance of the steam on the shaft and increasing the power of the engine in comparison with the'steam area.

A still further object of our invention is to provide a piston composed of a vertical diskl and having blades carried thereby and a slide carried by the cylinder adapted to be drawn upward and down at the proper instant to allow said blades to pass and havngfa valve operated by the shaft whereby the steampressure is cut off during said raising and lowering of theslide. l

In the accompanying drawings, Figure l is a vertical sectional view of a series of our engines arranged upon a shaft having the different arrangements of the vautomatic cut-offs and thepiston-'blades Fig. 2 is an endview of one of the cylinders, showing the handoperated valve for reversing the direction of the engine. Fig. 3 is a transverse horizontal sectional view taken on line 22, Fig. 2. Fig. 4 isan end view of one of the cylinders with one of the cylinder-heads removed. Fig. 5

lperiphery of the cylinder.

is a vertical sectional view of the steam-chest taken Online 3 3, Fig. l. Fig. 6 is a perspective view of one of the pistons removed. Fig. 7 is aperspective view of the automatic cut-off whichi is located within the steamchest. Fig. 8 is an end view of the cam carried by the shaft and showing the operatingarrn for raising and lowering the slide., Fig.

9 vis a' perspective view of the slide looking from the opposite side from that shown in Fig. 2.

teferring now to the drawings, A represents anelongated drive-shaft, which is adapted to be connected to the device to be vdriven in any desired manner, and loosely surrounding'said shaft are four cylinders l, 2, 3, and 4, although any desired number of cylinders may be used, as this forms no part of our invention. The said cylinders are preferably made of main or cylindrical portions B, which are supported by the cylinder-heads B', which have centrally-located openingsV b, through which the shaft A is adapted to pass and freely rotate therein. The said heads are providedwith inwardlyextending lugs or annular rings C, which are of a length to leave a central circumferential groove or recess c therebetween, the purpose of which we willnowproceed to explain. The shaftA carries the pistons 5, 6, 7, and 8, which are securely locked thereon by keysD, and said pistons are arranged respectively within the cylinders l, 2, 3, and d and are adapted' to freely rotate therein Vwith the shaft A.

The said pistons are composed of an enlarged central portion E, which is adapted to bear against the rings C, and are pro vided with the outwardly-extending vertically-disposed circumferential member E', which passes within the opening o between the inner ends of the rings C,and thus it will be seen that the inward steam-pressure is directly on the rings C of the cylinder and not on the iiange ofthe piston'or shaft proper, and it will be seen that said rings C form annular steam-chests F near the Carried by the member F.' are theoutwardly extending wings or bladesAEz, which are of a size to snugly t within the chest F and close the same, and for the purpose of admitting the steam on both sides of the member E', as it is seen thatthe steam is admitted to one side of ICO the cylinder, We provide openings e and e', and thus it will be readily seen that the pressure on the said member is equalized and will not hinder or decrease the power of the engine. It will also be seen that the openings c and e are arranged one on each side of the blades or wings E2 for the purpose of allowing the steam to pass on either side thereof for the purpose of reversing the engine, as will be hereinafter more fully described. The upper end of each of said cylinders is provided with an upwardly-extending chamber G in communication therewith, and within said chamber is a slide G, which is provided with a vertical slot g, which is adapted to straddle the member E of the piston and allow it to freely travel therein. The upper end of said slide is provided with an upwardly-proj ecting rod g2, which passes through a packing G' at the upper end of the chamber 'G and by means of which the slide is raised and lowered at the desired time to allow the blades or wings E2 to pass, and said slide Gr acts as a resisting point for the steam. Connected to the upper end of said rod g2 is a lever H, which is intermediately pivoted to the arm H', carried by the upper end of the cylinder, and connected to the opposite end of the lever ll is a rod 7L, which has its lower end passing through a guide H2, carried by the cylinder, and above said guide it is provided with a slot 7i", which is adapted to receive the shaft ,A, and above said slot is a laterally-extending stud carrying a roller 7L', which is adapted to travel in the cam-groove h2, carried by the cam 71,3, which is keyed on the shaft A. The said cam-groove h2 is provided with a curved portion h4, whichis adaptedto raise and drop theslide G instantaneously. The said cams 7i. are rigidly connected to the shaft A and are arranged so that but one slide is being raised at a time and that is just before the wings or blades E2 reach their respective slide. It is understood that there are four pistons, and the wings or blades are arranged on the quarter-that is, during each quarterrevolution of the shaft one of said slides is raised and lowered, and steam is adjusted between it and the slide. By this arrangement it is readily seen that there is always steampressure on the blades of one of the said pistous, and, in other words, there is a continuous direct steam-pressure on one of the pistons, so there is a continuous power given to the shaft A.

As clearly shown in the drawings, the cylinders are arranged in pairs, and the cylinders of each pair are spaced apart, and the adjacent faces of each pair of cylinders are provided at their upper ends with cut-away portions l, and extending downwardly around the shaf t A are the two segmental grooves J and J which have their upper ends in com- 1n unication with the cut-away portion I. The said eut-away portion .l is provided with a transverse strip A1.', which forms a slideway i2, and extending from said slideway inwardly through the slides of the cylinder are the openings t, 7c', 7a2, and k3, and extending across said openings is a slide K, which is adapted in either position to cover the two steam-inlet openings 7c and 7a2, leaving either of the outer openings 7c and 7.33 in communication with the cut-away portion I, as clearly shown in Fig. 2. Connected with the slide L and extending through a packing K2 in the cylinder is the operating-arm K, which is adapted to be operated by hand. The said slide K is provided with a recess L, extending from the under side upwardly therein, and the side thereof adjacent the cylinder has an opening Z, communicating with the said recess L, by means of which the steam passes from the segmental slots or recess J and J to the cylinder, and between said slots is the segmental solid portion J 2, the purpose of which will be hereinafter more fully described.

As before stated, the cylinders of each pair are spaced apart, and between said cylinders is a casing or steam-chest M, which is secured therebetween to the sides B of the cylinder. The upper end of said chest is provided with a transverse independent passage m', which has its sides in communication with the eutaway portions I of the two cylinders forming the pair, and connected to the upper end thereof is an exhaust-pipem, which is adapted to convey the exhaust to any desired point, and in communication with the side of said chest M is a steam-supply pipe m2. lVithin said steam-chest is a rotatable spool N, which is secured to the shaft A by means of the key N and which is provided at its sides with the laterally-extending Iianges n', which extend outwardly and iit snugly against the inner side of the steam-chest M and against the side ICO of the cylinder and holding the slide-valve K in position. Each of said `flanges n' is provided With an opening n, which are arranged in different parts thereof in respect to the opening carried by the opposite flange, and in the other rotary spool or cu t-off openings are arranged at different parts in respect to the shaft, so that at each quarter-revolutionv 4of the shaft one cylinder is taking steam, one

expanding, one exhausting, and the fourth also exhausting, but more nearly in the position to take steam as the first commences to use the expansion of the steam. It will be seen that this is done by the rotary spool N, as just after the slide for the respective piston has moved upwardly and downwardly the opening u in the spool comes opposite to the segmental slot J and the steam passes up through the recess L in the slide K, and as the spool continues to rotate the opening' M comes opposite the solid portion J2 and the steam is cut oif. rlhe expansion of the steam now commences and continues until the blades E pass around beyond the opening It, and the steam is then exhausted. The openings in the spools are so arranged that one opening in one of said spools comes opposite the segmental slot J on cach quarter-revolureazssI segmental slot J, thus allowing the steam to pass into the cylinder through the opening 7c? on the opposite side of the slide, and thus re When it is desired to versing Athe .engine.

1o stop the engine, the slide K is drawn over to the center, andQinthis position the recess L;

in the slide is between the two steam-supply pipes k and 7 0, and the steam is entirely cut off from thecylinder.

I Having thus described our invention, what we claim, and desire to secure by Letters Patl l. A rotary engine comprising a stationary cylinder, a rotary piston therein, the side of said cylinder having segmental steam-channels communicating with thev cylinder, a rotary` automatic valve adapted to close said.

channels, and a slidevalve controlling the communication between said cylinder and channels.

2. A rotary engine comprising a stationary cylinder, a rotatable piston therein, a shaft carrying said piston, the side of said cylinder having segmental channels communicating v.

with the cylinder, a steamchestsurroundin g vsaid channels, a rotary valve. within said steam-chest and having an opening in a line with said channels, and a slide-valve' con. trolling the communication between the segmental channels and. the cylinder.

'3. A rotaryengine comprising arotatable Ashafta cylinder surrounding the same, a

.- p istonc'arried l bythe shaft; within the cylinder and composed of avertically-disposed disk having openings extending transverse thereof, steam engaging lwings carried by said disk, ya 'vertically disposed chamben carriedcylinder, a verticallydisposed circuinferenftial narrowmember carried by the piston and;

having openings extending vtransversetheref of, laterally-extending steam engaging wings 1 carriedby said circumferential narrow membera vertically-disposed chamber carried by theupper end of said cylinder, a verticallymoving slide within said chamber and having a slot adaptedto receive said vertically-dis posedfcircumferential narrow member, and` means :for raising and lowering` said slideat 6o theproper time. f y

5. A rotary engine comprising va rotatable shaft, a cylinder surrounding the same, a ve'rtically-.disposed piston having- Openingsiex-- tending transverse thereof and steam engag- 'ing ings carriedby the sides of said piston between said openin gs.

. 6.A rotary engineeomprisinga rotatable bringing the recess L in the slide opposite the shaft, a cylinder surrounding the same, Va piston carried by the shaftand rotating within the cylinder, the side lof said cylinder having 7c a segmental expansionchamber` provided with inlet-openings, a steam-chest surrounding said openings, a rotary valve within said y. steam-chest, and havingan opening in a lineY with the said segmental recess, a sliding valve closing the upper end of said segmental chan ber, substantially as described.

7. A rotary engine comprising a rotatable shaft, a cylinder surrounding the same, apisf ton carried by the shaft androtating within 8o the cylinder, the sideof said cylinder having exhaust and inlet openings, a steam-chest surrounding the yshaft and said openings, a slide-valve between said cylinder andjchestc and covering said openings,'and arotary valve 8 5 carried bythe shaft withinsaid chest, subi: stantiallyas described g 8. A rotary engine comprising arotatable shaft, a cylinder surrounding the same, a' pis? toncarried by the sh aft and rotating within the 9 cylinder, the side of said cylinderhaving inlet and exhaust openings, aslide-valve adapted', to slide across said openings, the side of said cylinder also having segmental expansionchambers in communication with the inlet- .95 openings, asteam-chestsurroundingtheshaft and said segmental chambers, and a rotary@ valve mounted upon the shaft vwithin the steam-chest, substantiallyas describedl n 9. A rotary, engine, comprising a rotaryl loo I shaft, a cylinder surrounding the same, a pis-f,

-ton carried by the shaft and rotating within the cylinder, the side of said `cylinder having inlet and exhaust openings, a slidefvalvecov-I 1 ering said openings, the ,side lof said cylinder also having segmental expansion-chambers: in communication with the inlet-openings, a

steam-chest surrounding the shaft andsaid,

segmental chambers, a rotary member within the steam-chest and an outwardly-extending,11o

flange carried by said rotary member and cov-A4 ering said segmental chambers andhaving an opening in a linetherewith, s ubstantiallyfas described. c f

l0. A'rotary engine comprising a cylinder, I 15 inwardlyextending flanges carried by the side thereof, a rotary piston composed of van enlarged hub portion, a vertically-disposednar: `row disk-shapedV portion extending Ibetween the inwardly-extending flanges of the cylinder.: I 2o and having two transverse openings, wings carried by said vertical portion between said openings 'and entirely iillingv the portion of the cylinder above the flanges, and means for admitting steam to said cylinder on either. side of said wings, substantiallyas described.l 11. A rotary engine comprising a cylinder, a a rotarypiston therein and composedof-fay verticallyfdisposed narrow disk, wings; c arried by said di sl a slide adapted tofstr'addlel- 13o said disk, and means for instantaneously raisingand lowering said slide, to allow the wings to pass, substantially' as described. l

,12 A rotary engine comprising a cylinder,4

a rotary shaft passing therethrough, an enlarged rotary piston mounted thereon, a circumferential narrow member carried by the outer circumference of said piston vand engaging the inner circumference of the cylinder, inwardly-extending circular flanges carried by the sides of said cylinder and resting upon the outer circumferences of the piston, and laterally-extending wings carried by said circumferential narrow member.

13. A rotary engine comprising a cylinder, a rotary shaft therein, a piston within the cylinder and carried by the shaft, the side of said cylinder having an enlarged recess therein and inlet and exhaust openings extending therefrom to the interior of the cylinder, segmental expansion-recesses communicating with the lower end of said enlarged recess, a slidewithin said enlarged recess and having' a vertical recess in its lower face and a transverse opening communicating with the inletopening in the side of the cylinder, a steamchest surrounding said valve and segmental chambers, and a rotary spool having an opening in the path of said segmental chambers, substantially as described.

14. A rotary engine, comprising a cylinder, a rotary shaft passing therethrough, a piston carried by the shaft, the side of said cylinder having an enlarged recess in one side and exhaust-openings in communication therewith and the interior of the cylinder and arranged in a horizontal line, and segmental slots in communication with the lower end of said recess, a slide Within said recess and adapted to cover the two central inlet-openings and one of the outer exhaust-openings, the under side of said slide having an upwardly extending recess, and transverse openings communicating therewith and with one of said inletopenings, a steam chest surrounding said segmental slots, a rotary spool within said chest and carried by said shaft, an outwardly-extending fiange carried by the spool adjacent the side of the cylinder and having an opening therein in a line with said segmental slot, substantially as described.

15. A rotary engine comprising a cylinder, a piston therein, the side of said cylinder having segmental expansion -recesses therein, and having inlet openings communicating with said cylinder, the side 0f said cylinder having a transverse recess in communication with the segmental recesses, and a slide within said transverse recess, substantially as described.

16. A rotary engine comprising a cylinder, a piston therein, the side of said cylinder having segmental expansion-recesses therein and having inlet-openings communicating with said cylinder, an enlarged recess above the segmental recesses and in communication therewith and having exhaust-openings in communication therewith and a slide-valve adapted to cover said inlet and exhaust openings, substantially as described.

17. A rotary engine comprising a cylinder, a piston therein, the side of said cylinder havin g. a segmental expansion-recess therein, an enlarged recess above the segmental recess and communicating therewith, and having two inner inlet-openings and an exhaust on each side of said inlet-openings, and a slide within the enlarged upper recess and having an opening adapted to communicate with one of said inlet-openings and the segmental recess, substantially as described.

18. A' rotary engine comprising a cylinder, a piston therein, theside of said cylinder having two segmental expansion-recesses therein, an enlarged recess above the segmental recesses and in communication with the upper end and having two inlet-openings and an exhaustopening on each side of said inletopenings, and a slide within the enlarged upper recess and of a length to cover the two inlet-openings and one exhaust-opening, and said slide having a recess communicating with one of said segmental recesses and one of said inlet-openings, substantially as described. i

19. A rotary engine comprising a cylinder, a piston therein, the side of said cylinder having two segmental recesses therein, and an enlarged upper recess in communication with the upper end of said segmental recesses, and having inlet and exhaust openings therein, a slide-valve in said upper enlarged recess, a steam-chest surrounding said recesses, and a rotary valve within said chest and having an opening in communication with said segmental recesses, substantially as described.

20. A rotary engine comprising a rotatable shaft, a cylinder, a piston within the cylinder and composed of a vertically-disposed disk having openings extending transverse there.- of, steam engaging wings carried by the side of said disk, and a vertically-moving slide within said chamber having a slot adapted to receive said vertically-disposeddisk.

21. A rotary engine comprising a cylinder, a piston therein, the side of said cylinder having segmental expansion chambers in communication with the cylinder, a rotary valve communicating with the sides of said expansion-chambers, and a slide-valve controlling the ripper ends of said expansion-chamber.

22. A rotary engine, comprising a cylinder, a shaft passing therethrough, a piston within the cylinder on said shaft, an outward-extending disk-shaped member carried by the piston, laterally-extending wings carried by said disk-shaped member, a slide carried by the cylinder and having avertical slot adapted to receive said disk-shaped member, an upwardly-extending arm carried by the slide and passing through the cylinder, a cam on said shaft, an intermediate]y-pivoted lever having one end connected to the upwardlyextending arm and a connection between said intermediately-pivoted lever and said cam.

23. A rotary engine comprising a rotatable shaft, a cylindersurrounding the same, a ver- ICO IIO

tically-disposed piston having openings eX-I tending transverse thereof, steam engaging Wings carried by the sides of said piston bev tween said openings and aslide having avertical slot adapted to receive the verticallydisposed piston.

24. A rotary engine comprising arotatable shaft, a cylinder surrounding the same, a vertically-disposed piston having openings eX- tending transverse thereof, steam engaging Wings carried by the sides of said piston between said openings and supply and exhaust openings `carried by one side of said cylinder.

25. A rotary engine comprising a cylinder, a rotary shaft passing therethrough, an enlarged rotary piston mounted thereon, a circumferential narrowr member carried by the outer circumference of said piston vand engaging the inner circumference of the cylinder and havingopenings extending transversely therethrough, inwardlyextending circular flangescarried by the sidesof the cylinder and resting upon the outer circumference of the piston, laterally-extending Wings carried bythe vertical circumferential narrow member, and a slide having an opening adapted to receive the said vertical circumferential narrow member.

26. A rotary engine comprising a rotatable shaft, cylinders surrounding said shaft, pis-A tons carried by said shaft Within the cylinders,vertically-,disposed circumferential narrow members carried by the pistons and having openings'extending therethrough at different parts thereof inrespect to each other, Wings carried by said narrow members adjacent the openings, the adjacent sides of said cylinders having segmental expansion-chambers therein and openings connecting the upper, ends thereof With ythe said r cylinders, steam-chests connecting the adjacent sides of said cylinders and rotary spools carried by the shaft Within said steam-chests and having openings therein registering with the segmental chambers and arranged at diiferentv points in respect to the wings carried by theA respective cylinders.

' In testimony whereof We have hereunto setour hands in the presence of two subscribing Witnesses.

JAMES n. cADoo. v Josnrn M. VAN' WHY.

' Witnesses:y

H. K. FUHRMAN, l. LEWIS E. WRIGHT.

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