US1595496A - Fluid motor - Google Patents

Description

Aug. 1d 1926.

T. R. BEGGS KFLUID MOTOR FiidwJune y4, 1924 She tad-Sheet l.l

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WI'TNESSES ATTORNEY T. R. BEGGS FLUID MOTOR Aug. 10,1926.

Filed June 4, 1924v 4 Sheets-Sheet 2 WITNESSES Aug. 1o', 1926.

T. R. BEGGS FLUID MOTOR 'Filed Jun'e 4. 1924 4 sheets-sheet s lNvENTo ATTORNEY 4 Sheets-Sheet 4 ATTORNEY Aug. 1o 1926 T. R. BEGGS FLUID MOTOR Filed June 4, 1924 INVENTOR)v i n A AW, Qu mm m www WITNESSES Patented ug. 10, 1926.

NETE@ inane earsui" ottica..

FLUID MOTOR.

Application filed June 4, 1924. Serial No. 717,752.

small difference in pressure is necessary for its operation, so that it is particularly adapted to be actuated by pressure generated by the rise and fall of t-lie tide, through the medium of a specially constructed apparatus disclosed in my copending applica tion, Serial Number 717 ,753, filed of even date herewith. The fundamental principle of the invention is equally well adapted tobe utilized for operation by steam pressure.

lVith the above and other `objects in view, which will be more fully explained hereinafter, the invention consists in certain de tails of construction and combinations ofV elements, the preferred arrangement of which is illustrated in the accompanying drawings.

In. the drawings:

Figure 1 is an elevation of t-he invention as viewed from one end.

Figure 2 is'an elevation as viewed from the opposite end.

Figure 3 is a side elevation. of the invention, with the inletand exhaust passages shown in cross section.

.Figure l is a vertical section taken substantially in the plane of the'motor shaft.

Figure 5 is a fragmentary sectional view, illustrating one of the vanes and its relation to the motor shaft.

Figure 6 is a fragmentary sectional view of one of the vanes, and the means for supporting and shifting the same.

Figure 7 guided.

Figure 8 is a detail view of the other cam track by which the vanes are guided.

Figure 9 is a section taken transversely of the motor cylinder, illustrating the various distinctive positions assumed by the vanes during the operation of the motor..

is a'detail view of one of the cam tracks by means of which the vanes are.

Figure 10 is a fragmentary sectional view illustrating how the cylinder heads are supported for rotation.

Figure 11 is a vertical longitudinal section showing a modified form of the invention., especially adapted for operation by steam.

Figure 12 is a detail view in elevation of one of the cylinder heads shown in Figure 11.

Figure 13 is a similar view of the opposite cylinder head.

The invention, as illustrated in Figures 1 to 10, inclusive, comprises a cylindrical housing 15 formed with a suitable base 16 by which it is supported. Secured to one end ofthe housing 15 is a. flanged retaining ring 17, the interior of which forms a cam track, as illustrated in Figure 8, for a pur pose which will subsequently be explained. A similar flanged retaining ring 18 is secured to the opposite end of the cylinder, and its interior forms a cam track of different shape, as illustrated in Figure 7. TheV main shaft 19 of the motor is sup ported centrally of cylinder heads 2O and 21, which are rotatably mounted in ball bearings 22 within opposite ends of the cylinder 15, and are secured to a central drum 23, which is keyed to the shaft 1). The motor shaft 19 may be provided with a pulley 24, or other suitable device, for transmitting power.

' he drum 23 is inthe shape of a cylinder, concentric with and of smaller diameter than the cylindrical housing 15 and has semi-cylindrical .recesses 25 formed diametrically opposite each other. Two shafts 26 are rotatably mounted in the cylinder heads 2O and 21, axially of the respective recesses 25. A vane 27 is keyed to each shaft 26, andheld against endwise movement by ball Vbearings 28. Each .of the shafts 26 is provided at one end with a cross head 29 having rollers 30, which are guided o n the cani track 18, and has at its other end across iead 31 provided with rollers 32, which ride on the cam track 17. During a portion of the revolution of the vane about the axis of the cylinder, the vane is disposed radially of thecylinder, and its side edges are iii contact with the bottom of the recess 25 and the inner surface of the cylindrical housing 15, respectively, so that it presents a surface Cil against which the incoming fluid n act. During the remainino` portion olf its revolution, the vane is disposed in the position shown in Figure in which one oft its convex faces forms a continuation ot the cylindrical surface of the drum 23.

'fees 3 and 9, the cylinis termed at one side with extending troni end to end and preteral'ily oit considen i itlier one ot these ports may e the inlet port and the other' the exhaust port, since the operation ot the motor is e in whichever direction it ,i iuits 35 and are connected rinsing 15, so as to provide passageconnecting the ports 33 and 3e to 'l ,ource ot pressure. .'llie presp ssageways and may he either above o below atmospheric pressure, long the said pressures are ditterent. i partition 37 se)L irates the ports and 3e, and extends radially across the annular space between the inner surtace ot the housing 15 and the surface ot the drum 23.

rllhe operation ot the invention will loe liest understood from a consideration ot Figures 7 and 3, taken in connection with Figure t, wherein several positions'ot the parts 27, 30 and are indicated by dotted lines. As each sha-tt 26 passes the partition 3T, the rollers are travelling along the portion a ot the cam track 17, and one or. the rollers 3) is travelling along the portion ce of the cam track 18. Thus, as the vane 27 passes the partition 37, it is disposed tangentially ot the drum 23, so as to permit compresse-d air or other tlnid to pass freely through the port 33, into the space between `he drun'i 23 and the inner wall ot' the housrEhe other vane 2?', which is now located dian'ietrically opposite to the partition 37 is disposed radially oit' the drum Q3 with its rollers 3G guided on the portion d ot the track 13, and with one oi the rollers 32 guided on the portion CZ ot the track 17. ln this position the vane entends completely across the space between the bottom of the recess and the inner wall ot the housingl 15, and any excess ot pressure entering` through the port will be exerted against the vane, and cause it to revolve with the drinn to fard the exhaust port 34. As the lrum 23 rotates forwardly, the roller 30, which is travelling along` the track portion a reaches the point whence it travels inwardly to the point c, while the corresponding roller travels trom the point o to the point c. luring this movement, the corresponding vane moves trom the position indicated oy the dotted lines B to that indicated'hy the dotted lines C. ln this last position, the vane extends across the space hetween the drinn 23 and the inner wall of the housing 15, while the other vane is approaching the position in which its roller 32 rides invardly on its cam track from the pont e to the point while at the Sametime, the corresponding roller 30 travels outw rdly trein the point e to the p int f. rThe arcugortions d and d of the cam tracks tend Yfor somewhat more than a semi-circumference, so that each vane is projected across the space between the drum A3 and the housing 15, he'l'ore the preceding vane is withdrawn. rl`hus, the pressure ot the iiuid is transmitted continuously and uniformly through tne vanes to actuate the power snat't 19.

ln the modification ot the invention illus traited in Figures 11, l2 and 13, which is more especially adapted for steam operation, the cylinder l() is formed with a supporting hase il, and is provided at its ends with heads e2 and i3 which are tirmly secured thereto by bolts lelextending longitudinally through the cylinder wall and heads, suitahle gaskets l5 being provided to prevent leakage. rlhe power shaft 13 is jiournaled centrally or' the heads 42 and 43, and its hearings are provided with suitable packing glands A drum 47 is keyed to the shaft 19, and is provided with pockets 47a within whi li are mounted vanes 48, similar to the vanes 27. The drum e7, however, is provided at each end with a Aboss 49, and the head and are each provided with corending flanges 50 and 5l, respectively, ,i are 'formed with internal cani tracks he understood that the cross sectional area so that a slight ditl'erence in pressure will impart considerable force to the power shalt.

Only a small pressure, therefore, is neces sary, provided that the fluid under pressure is supplied in sul'licient volume. lt will he apparent that the device will operate in thev same manner in either direction, depending only upon which side has the greater pressure. A negative pressure or suction through the exhaust port will loe just as effective as a positive. pressure through the intake port.

lihile l have shown and described in detail the preferred construction of the inven-Y tion, it is apparent that other modifications may he made therein without departing from the fundamental principles,l of the invention, and it is. therefore, my intention to include all such modilications within the scope et the appended claims.

What is claimed is:

1. ln a fluid motor, the combination of a cylindrical housing, a drum rotatably mounted axially of the housing Yand of smaller diameter than the interior of the housing and having recesses in its convex surface, vanes mounted for rotation within said recesses, retaining rings secured at the ends of the housing and holding the drum against endwise movement, the interior of each ring forming a cam track, means secured to the ends of the vanes and riding on the respective cam tracks as the drum rotates, said tracks being so formed as to project the vanes across the space between the drum and the interior surface of the housing as the drum rotates.

2. In a fluid motor, the combina-tion of a cylindrical housing, a substantially cylindrical drum rotatably mounted within the housing and coaxial therewith, said drum being of smaller diameter than the interior surface of the housing and having semicylindrical recesses in opposite sides thereof, vanes having shafts mounted for rotation at the centers of curvature of said recesses, retaining rings secured at the ends of the housing and holding the drum against endwise movement, the interior of each ring forming a cain track, means secured to the shafts of the respective vanes and riding on the respective cam tracks as the drumrotates, said tracks being so formed as to project the vanes across the space between `the bottoms of said recesses and the interior surface of the housing as the drum rotates.

3. ln a fluid motor, the combination of a cylindrical housing having heads rotatable therein, a shaft mounted axially of the heads, a drum keyed to the shaft and securedl between the heads, said drum being of smaller diameter than the interior of the housing, retaining rings secured at the ends of the housing and holding said heads and drum against movement longitudinally of said shaft, the interior of each ring forming a cam track, vanes journaled in said heads, and means secured t-o the ends of the vanes and riding on the respective cam tracks as the drum rotates, said tracks being so formed as to project the vanes across the space between the drum and the interior surface of the housing as the drum rotates.

,4. In a fluid motor, the combination of a cylindrical housing having an inlet port and an exhaust port, a drum rotatable within the housing and spaced from the interior surface thereof, retaining rinos secured at the ends of the housing and holding the drum against endwise movement, the in-. terior of each ring forming a cam track, vanes carried by the drum, and means secured to the ends of the vanes and riding on the respective cam tracks as the drum rotates, said tracks being so formed as to project and maintain the vanes across the space between the drum and interior surface of the housing while thevanes travel between said ports.

5. ln a fluid motor, the combination of a cylindrical housing having an inlet port and taining rings secured at the ends of theA housing and holding the drum against end wise movement, t-he interior of each ring forming a cam track, vanes carried by the drum and extending from end to end thereof, and means secured to the ends of the vanes and riding on the respective cam tracks as the drum rotates and operable to project and maintain the vanes across the space between the drum and the interior of the cylindrical wall while the vanes travel between said ports.

6. In a fluid motor, the combination of a rotatable drum, a cylindrical housing coaxial with and of greater diameter than the drum and surrounding the same, said housing having inlet and outlet ports separatedv by a partition which extends across the space between the drum and housing, retaining rings secured at the ends of the housing and holding the drum against endwise movement, the interior of each ring forming a cam track, said drum having recesses in opposite sides thereof, vanes mounted in said recesses, each vane having means secured to opposite ends thereof riding on the respective cam tracks as the drum rotates, said tracks being so formed as to maintain `each vane across the space between the drum and the interior of the housing during the major part of its travel and to dispose said vane angentially of the drum as it passes said partition, the vane when in said tangential position forming with the drum a continuous cylindrical surface in contact with the partition.

7. ln a fluid motor, the cylindrical housing, a drum rotatably mounted axially of the housing and of smaller diameter than the Ainterior of the housing and having recesses in its convex face, hafts journaled in the drum and extending longitudinally across said recesses, vanes carried by the shafts, retraining rings combination of a secured at the ends of the housing and liolding the drum against endwise movement, the interior of each ring forming a cam track, crois heads secured to the ends of said shafts and having rollers at their ends riding on the respective cam tracks as the drum ro fates, said tracks being so formed as to project the vanes across the space between the drum and the interior surface of the housing during rotation of said drum.

S. ln a fluid motor, the combination of a cylindrical housing, a substantially cylindrical drum rotatably mounted within the housing and coaxial tl'iereivith, said drum being of smaller diameter than the interior o' the housing and having' semi-cylindrical recesses in opposite sides thereof, shafts journaled in the drum and extending loi'igitudinally across said recesses at the center oi' curvature thereof, vanes carried by the shafts4 retaining; rings 'secured at the ,nds ot' the housing and holding` the drum against la endvvise movement, the interior ot each ring; Forming a cam track, the shaft of each vane having` a cross head secured to each end, rollers carried at the ends oi' the cross heads and riding on the respective cam tracks to determine the angular positions of s: varies, said tracks being` so termed as to project the vanes across the space between the bottoms of said recesses and the interior surtace ot' the housing' as the drum rotates.

9. ln a iiuid motor, the combination ot a cylindrical housing having;l heads rotatable therein at opposite ends thereof, a shaft mounted axially oi the heads, a drinn keyed to the shaft and secured betvveen the heads, said druni being ot sinalier diamet r than the .interior ot the housing, shatts ournaled in said heads and having' vanes secured thereto, retaining rings secured at the ends ot the housing and holding' the drum and ieads against movement endivise ot the housing, the interior ot each ring 'forminga cam track, eroi-is heads secured to the shafts ot said vanos and havino rollers at their ends riding on the respective cam tracks as he drum rotates, said tracks beingv Vso formed as to project the vanes across the 'space between the drum and the interior Wall ot the housing` While the drum rotates.

l0. ln a fluid motor, the combination ot a cylindrical housing,` having` an inlet port and an exhaust port, a drum rotatable Within the l'iousingl and spaced troni the interior surface thereof, shafts rotatably carried by the drinn, vanes secured to said shafts, retaining` rings 'secured at the ends oi the housing and holding` the drum against endivise 1n vement, the interior ot each ringv tormi'ig a cani track,- cross heads secured to the ends ot each shaft and having` rollers at their ends riding on the respective cam tracks, aid tracks being 'so formed as to project and maintain the vanes across the drum and interior surface of the housing while said vanes travel between the ports.

l1. in a iiuid motor, the combination ot a cylindrical housing,` having an inlet port and an exhaust port through its cylindrical Wall extending trom endto end thereof, ai drum rotatable Within the housing 'and spaced from the interior surface thereof, shafts rotatably supportedrby the drum and havingl vanes secured thereto extending from end to end of the housing, retaining rings secured at the ends of the housingl and holding the orum against Yendivisc movement, the interior of each ring forming a cam track, cross heads 'secured to the Yends ot each shaft and having,` rollers at their ends riding` on the respective cani tracks to determine the position of the vanes as the drum rotates, said tracks being so formed as to project and maintain the varies across tht` space between the drum and the interior ot' the cylindrical Wall While the vanes travel between said ports.

l2. In fluid motor, the combination ot a rotatable drum, a c 'rlindricfalhousing coaxial With and oit greater diameter than the druni and surrounding the saine, 'said housing; having inlet and outlet ports through its cylindrical Wall extending from end to end thereof and separated by a partition which extends across the space between Vthe drum and housing, said drum having substantially semi -cylindrical yrecesses in opposite sides thereof, shafts journaled in the drinn and ez-:tending longitudinally of said recesses at the center ot curvaturethereof,

vanes secured to the respective shafts, re-

taining rings secured at the ends of the housing` and holding the drum against endwise movement, the interior of each ring form# ing` a cam track, cross heads secured to the ends ot said sha-tts and havingv rollers at their ends riding on the respective cam tracks to determine the position of said vanos, said tracks being so shaped as to maintain each vane across the space between .the bottom ot the respective recess and the interior or the housing during' the major part ot its travel as the drum rotates, and to dispose said vane tangentially of the drum as it passes said partition, the vane when in the tangential position torming With the drum a continuous cylindrical sur-V tace in contact With the. partition.

in testimony, that l claim the foregoing as my own, I have hereto affixed my signature.

THGMAS ROBERT BEGGS.

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