US1009213A

US1009213A - Rotary engine.

Info

Publication number: US1009213A
Application number: US60870211A
Authority: US
Inventors: Benjamin F Augustine
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-02-15
Filing date: 1911-02-15
Publication date: 1911-11-21
Anticipated expiration: 1928-11-21

Description

Patented Nov. 21, 1911.

l n vanter @Wohnfl ENGINE.

ROTARY APPLICATION ILED FEB. l5. 1911.

B. F. AUGUSTINE.

wh. m. N wm.

B. P. AUGUSTINE.

ROTARY ENGINE.' APPLICATION Imm 1113.15, 1911.

Patented Nov. 21, 1911 8 SBUETS-SHBET 2.

B. F. -iIGIS'lIlIE.

ROTARY ENGINE.

'APPLIOATIQE FILED PEB. 15, 1911.

8 SHEETS-SHEET 4.

' eigjmz B. F. '\.U(}US'1`INE. A

ROTARY ENGINE.

APPLICATION FILED rms. 15, 19u.

1,009,213. l Patented Nov. 21, 1911-.

8 SHEETB-SHBET 6.

WI 21V/51515.- INz/ENTo/Q B'. P. AGUSTINE.

ROTARY ENGINE.

AWLIGATION FILED P33115, 1911.

'1,009,2 3. Patented 11011.21, 1911. 1

8 SHEETS-SHEET 7.

B. P: AUGUSTE ROTARY BNGIEE.

APPLICATION FILED 11:21.15, 1911.

Patented Nov. 21, 1911.

8 BHEETS-SHEET 34 [Nl/ENTO/e W1 mvg-5555 -f AUNITED STATES PATENT oEEIoE.

1,009,213. Specification 0f Letters Patent Patented Nov. 21, 1911.

I Application tiled February 15, 1911. Serial No. 608,702.

To all whom it mayvconcern: f a transverse sectional View on the line a-a' Be it known that I, BENJAMrN F. AUGUS- of F ig. l. F ig. 3 is a. transverse scctioiial TINE, a citizen of the United States, residview on the line b-b of Fig. 1. Fig. 4 is ing at Buffalo, in the county of Erie and a transversesectional view on the line c-c 60 5 State cf New York, have invented certain of Fig. 1. Fig. 5 is a detail perspective view new and useful Improvements in Rotary Enof the rotary carrier with the telescoping gines, of which the following is a specificaps applied thereto and shown in section cation. and with the piston carrying and balancing A This invention relates to rotary devices, .means shown ready for application to the 65 1o such as rotaryr engines or the llke. plstons. Fig. 6 1s a detall perspective One object is to provide a rotary engine view of the abutment illustrating one of the emhoc'iying such characteristics as to provide telescoping caps ready to be positioned .t`or an elli-cient balancing of the pistons and thereon. Fig. 7 is a detail perspective view other parts of the engine. of one of the cam rings forming part of the 70 Another object resides in the provision piston supporting and balancing means. 1, of a rotary engine whose parts are so formed Fig. S iS a detail perspective view of the and constructed that the. abutment has an other cam ring that forms partof the pisarea of fluid pressure on one side substanton supporting and balancing means. Fi tiolly commensurate with the lateral fiuid 9 is a detail fragmentary 'view of the anti- 75 pressure on the iotating carrier, together friction means associated with the pistons. with devices whereby the fluid pressure on Fig. 10 is a fragmentary vieu' illustrating a. the abutment may be utilizedv to counterface view of one of the parts of the anti-fricbalance the carrier. tion hearing retaining elements. Fig. 11 is A stil further objgct is to provide a. roa view of the centrifugal governor, a part 8G tary. steam, gas, air, combustion, or other being broken awa-y. v

fluid operating engine embodying a novel Referring now more particularly to the organized mechanism designed to overcome accompanying drawings the reference charmmccessary vibration, noise, undue wear of acter 1 indicates a base provided with a parts and leakage. v valve chamber 2 with which communicates 85 3o A stili further object is to provide two asteam inlet 3, there being an automatically fixed contacting members and a movable balanced valve el disposed in said chamber member mounted within the innermost fixed and operable according to the varying load member with means constructed and arunder the influence of the centrifugal govranged whereby pressure may be transferred ernor mechanism, indicated generally by the 90 f between the lined. members and utilized to reference character 5, said valve having a -balance the movable member. stern 6 which has connection with the gov- It still further designed to provide a orner mechanism hereinafter' more fully denovel lne-ans tor supporting and balancing scrihed.- This valve 4 is preferably cylindri- 'the operating pistons whereby the pistons calin cross-section and reduced intermediate 95 40 are held in proper operative position and its ends to provide a dat portion 7 having the centrifugal force acting on the pistons a pluraiiy of apertures 8 through which the incident to the rotation thereof is eii'ectually steam may pass to the. rear of the chamber overcome. 2 or. to the side of the valve opposite that With the above and other objects in view, toward which the steam enters the valve 45 the present invention consists in the conehalnher through the inlet 3 and by virtue struction and arrangement of parts hereirv of the stam expanding upon opposite sides after more fully described, illustrated in of the valve. 4 the latter is balanced because g the accompanying drawings and particuthe -force of the incoming steam against the v y larly pointed out in the appended claims, it piston is eounterhalanced by the steam be- 50 being understood that changes may be made hind thevalve intermediate the ends of the in the form, proportion, size and minor delatter. Thus the valve pr ctically divides tails withoutdeparting from the spirit or the valve chamber 2 into separate steam tsacrificing any ot' the advantages of the in compartments, and by reason of the lower vcntion. I v edge of the valve being reduced or tapered, a5 ln the drawings: Figure 1 is a longitudias at 54 the steam upon opposite sides therenal sectiona view or the engine. Fig. 2 is of will expand beneath` the valve and lift Q p v 1,009,213

tion with the valve chamber 2 by way of said port 70.

Disposed in the steam cylinder 9 is rigidly mounted an abutment 7', which is cylindrical in shape and is provided with a cylin drical chamber 71 located eceentrically therein, thus forming in etiect a member cam shaped in cross section and which has its thickened portion preferably at the lower side of the casing. This abutment has pe'- culiar exterior formation, by virtue of which, it has comparatively small surface contact with the interior of the casing, there being an external, annular outstanding, ring-like enlargement 10 which is the only part of the abutment which contacts with the casing, the external portions of the abutment upon opposite sidesof the annular enlargement 10 being reduced and provided' with spaced ribs 11 disposed longitudinally of the abutment and leading from the ends thereof to corresponding rings 12 adjacent opposite sides ofsaid enlargement. On the interior of the abutment at its thickened portion between the inlet port and the exhaust port 73. are staggered grooves 71 that become lilled with oil and other foreign matter and form a seal to prevent the escape and waste of the operating Huid.

The numeral 13 indicates a rotary piston carrier rigidly secured on the power shaft 14:

to rotate therewith. Said shaft is centrally journaled through the heads 15 and en'd sections 16 of the cylinder.

17 indicates stuliing boxes formed prefer. ablyY on the heads 15 with which'coperate packing glands 18.

19 indicates lubricating wells and in each of which and supported on the power shaft, is a ring or other suitable element 20 adapted to feed the lubricant from the bottom or' the wells 19 to the power shaft automati cally, the rings being let down through the opening 21 in the top of the wells 19 and disposed in alinemer with the bores 22 of the wells to receive the power shaft 14. I

The piston carrier is eccentrically disposed witllin the cylindrical chamber in said abutment and has its outer wall or surface in running contact with the wall of the chamber. Said carrier has ianged ends 23 adapted to overlap the ends of the abutment. The carrier is formed in sections so that it maybe disposed in the abutment oven though the flanges 20 be integral with the body of the carrier. I provide a plurality of bores 2- in the ends'ot the abutment which are? adapted to "eceive the stems 25 of the pack- I ing bloei@ 26, helical or other springs or pressure exerting means-27 being confined within the bores and engaging said stems at the ends of the latter to force the acking blocks normally against the inner aces of the end tlanges o the piston carrier, the packing 28 forming a steam tight joint between the abutment and the flanged ends of the carrier. It will be noted that the stems 25 are preferably of a diameter substantially the same as the diameter of the bores and that the springs 27 are of substantially the same diameter as the stems, and these sizes and this arrangement of these elements have been adopted for the purpose of insuring an even pressure upon the packing blocks by the pressure exert-ing means so as to prevent tilting of the packing blocks and insuring an even bearing surface. Sleeves or

tianged disks

29 and 30, hereinafter referred to as caps telescope 'the ribbed ends of the abutment for cooperation ,with the ribs 11 and with the enlargement 1() to form chambers 31 (see l.g. 1) between the ribs to provide for steam cushioning or balancing of the piston. carrier. These chambers 31 are connected with the steam chamber 7a by a series of ports 32. The operating uid in 32 into the chambers 31 and create a pressure on the caps.' The innerends of the

caps

29 and 30 have running joint connections with tlievrespective rings 12 and are tixe'd to the ends of the rotary piston carrier through the instrumentality of screws or other suitable fastenings 33. In vorder to prevent leakage between the inner ends of said caps and the sides of the enlargement 10 of the abutment I provide the inner ends of the caps with packing 34.

Formed in the piston carrier are radial piston guide-

Ways

35 and 36 in which are monntedthe radial pistons 3T and 3S, respectively, which slide relative to the carrier as the carrier rotates. Each piston carries packing 39 in its outer edge and which is adapted to bear against theinner Wall of the abutment and against the pistons the steam nnpinges to drive the piston carrier and pistons and consequently operate the engine as will be hereinafter more fully explained.

The piston blades 3T and 3S eaclr'have i projections 40 at their ends that project through the slotted openings tl1 of the caps 25) and 30 und which are preferably rectangular in cross section for engagement in the similarly `formed openings in the

bearings

42 and 43 looselyv mounted in the

lugs

44 and 43 of the rings 4H and 47. respectively. These rings are mounted on fixed eccentric bearin,"r hubs 4S on the heads 15 of the cylinder. i These eccentric bearings` form means for supporting or holding the pistons in running contact wifi; the wall fit' 'the chamber T as the carrier rotates. lf desired. balls, roller i or other bearing elements are preferably disthe chamber 7 will pass through the ports posed Vbetween the hubs 48 and the innermost ring and also between the rings as clearl)r shown in Figs. l and 4.

In order to counter-balance the centrifugal force acting on one piston by the centrifugal force acting on the other piston the rings 46 and 4'( are inonntedupon each other with.

the innermost ring loose on the corresponding eeeentrie hub :1S and the outermost ring loose on the innermost ring, sothat. both rings are permitted to move or oscillate slightly on said eteentriolinonntings and also with relation to each other so as to perand balancing means. Afore, perform more than one lui mitl the pistons to slide radiallY relative to the, carrier as the carrier rotates. Moreover, hy reason of these rings, the distance between the hearings TL and 43 of said lugs iS equal at all times across the axis of the cylindrical bore, thereby insuring. not only an etcient balance of the pistons but obviating undue wear onV the piston 'supporting These rines, there` .elion7 in that they support the pistons in their guidewzrys so that they slide relalive to the earier in the guideumys and also halanre the pistons. By virtue o' these characteristics the cam rings may be termed combined piston supporting and balancing means."

The structure of the rings G :nal l? is peculiar, one ring fitting within the other. the ring" il having one side reduced and upon nich redueetlvportion the companion ringr ed' is xnomted, whereby they overlap oircuinfereniiall'v and inter-engage with relation to each other, the .lugs als and of the rings being of a thickness eqnai to the thickness of both rings when assembled andV having their inner overhanging ends curved to conform to the curvature of the rings with their outer ends curved to conform to the curvature of the outer tlang'ed wall 5l of the heads ib whereby the lugs et and 1&5 have movement in the space betweenthe outer circumference of the rings and the.

inner circumference of the flanges il of the heads. l

'lo facilitate an efficient sliding inoxeinent of the pistons in their guideways and to reduce friction to a Inininiuni, one side of eac-n guide-way nav he milled ont to provide a shoulder te receive the wear plate 52' (see Figs. 9 and itl) 'against which the rollers or other hearings of the roller hear- :ng retainer 3l travel, one of .which retailiers is slipped over eerh end ot each pistonA 3'-3S, the langes 55 and 5o fitting over the outer and inner longitudinal edges o' the pir-tons.. The roller hearings :33 are. held against lengnvv'ise movement from the retainer 54 and plaie 5:? by virtue of the faut that their ends bear against the sides of the slots 53 of the retainers.

. The centrifugal governor ereinoefore referred to is constructed preferably o a lighten the same if disk 57, which may have openings 58 t0 desired, and is tixedly mounted upon the power shaft '14. This disk has a Cain 5S pivoted thereon olf from the center thereof by means of a suitable pivot .39, the arm G0 olf the eccentric cani 58 having adjustable pivotal connection at 61 witha link G2 pivoted to the weight 63 secured to the outer end of the lent` spring (S4,

ixedly secured at one end. as at 65, to the* disk 5?, there being a. suitable tensioning means 66 for thc spring (il. r[he (fam 58 has the cam slot. 5S which embraces the power shaft 14 and the strap (3T of the eccentric cam 55 has link connection GS with a shaft (39 to'whieh latter is connected the crank 71' which connects with the siem 6 of the valve Ll. Th got ernor mechanism is designed for the purpose of vanioinatirally regulating the valve -l to supply the operating lluid to the engine .recording to the .arying loads. Obviously ai j other governor itiechanism may be employed.

ln the operation of the engine the fluid enters vthe init-t 3. and passes through the opening: 5 in the that interinediae portion S) of the vaive 4, and in the event that the enginll be at rest and the. rotary carrier oil center with the valve i in closil position, steam may he. supplied to the inlet port T0 through a liv-pass il. and permitted to cuter the steam cylinder to start the engine. "Cfluether the s am enters the port 70 by way of tilt-inletA 3 or the ily-paas Ti, it passes unvardly in the port T0 and out of the upper cmi of the latter through the spaced orifices 73', bj.' virtue of which latter, the steam is spread. and passes into the cylinder and expands and iinpinges against the corres-pointing piston, causing the rotary carrier and the pmver shaft. H to rotate. As

the steam expands am? iiupinges against the.

stenza passing out ot' the steam cylinder buv.

way ot' the exhaust ports 2l-Til as the driven piston pnsses the exhaust ports and when the rotary carrier reaches a predetermined speed the centrifugal governor rots upon the automatic-ally l,-al:1rn'erl valvev l to .regulate the supply o? steam to the steam ('ylinder according to the .jarying load. i

As above noted, the piston carrier 'is eounterbalanced throughout its entire rotin tion through the connection of the chambers 3l on the cuter side. of the abutment with the cinunher "Za wherein the operating tluicl is expanded to rotate the carrier. The pressure of the operating fluid creates a rotating force operating upon the Carr-.er to rotate the sinne and also non-rotating forces which apt laterally upon the carrier and also lat-- erally .against the outer wall of the chainher 'if'. These lateral forces of the outer well of the chamber 7': are, of course, im-

material. The lateral forces, however, operating upon the rotating carrierlwill forcev the same against the supporting bearings therefor, thereby creating great friction and Wear and loss of power. It is these lateral forces against the rotating carrier which it is desired to counterbalance so that the carrier may rotate freely and with little or no friction in the cylinder. This complete counterbalancing of the lateral or nonrotat-ing forces on the carrier is brought about in the following manner. In the rapid rotation of the piston carrier, the centrifugal force acting upon the operatingj fluid will carry the lubricant therein and a certain part of the water of condensation to the outer wall of the chamber 7* and through the ports 32 formed in the abutment to the chambers 31. Thus, a portion of the operating fluid is transferred to the outer face of the abut-ment end is forced against the caps in a lateral direction opposite to the lateral forces of the operating lluid acting upon the piston carrier in the chamber 7a. The caps, as above noted, are connected with the rotating piston carrier, and therefore, this lateral force on the caps will' offset or counterbalance the lateral force on the carrier, provided of course, that the area of the surface on the caps exposed to the lateral force of the operating fluid, is substantially equal to the area of the outer surface 'of the pist-on carrier whicl. is exposed to the lateral force of the opcr ating'iluid in the chamber 7a. These chambers 3l are so constructed that the surface areas, above referred to, are substantially equal, and therefore, these parte constitute devices for utilizing a portion of the oper ating fluid for creating an opposing force y en the piston carrier which is substantially equal to the lateral or non-rotating force of the operating `fluid on the piston carrier. lVhen a radial piston has just passed the inlet port, the surface area on the rotating carrier exposed to the steam or fluid pressure is comparatively small. This surface area gradually increases with the rotation of the piston carrier. The chambers 3l are arranged in succession circumferentially about the abutment and as the radial pistons rotate with the carrier, first one port and then another will be uncovered and therebyY the area on the caps exposed to the pressure of the operating (luid will be increased in substantially the same increments and simultaneously with lthe increased area on the piston carrier which is exposed to the pressurcvof the operating fluid. Therefore, during the entire rotation of 4the piston carrienrthe area of the surface on the caps expos-ed to the fluid pressure will be substantially equal to that on the carrier ex posed to the operating fluid presione- Fur thermore, 'when the operating fluid tust en ters the chamber 7, the pressure on the carrier is, of course, much greater than after said operating fluid has expanded and its active force. substantially spent. By my improved eonstruction, however, wherein ve portion of the operating fluid is utilized to effect a counterbalancing of the rotating carrier, the counterbalancing Aforce on the capa would always equal, for each unit area, the lateral or non-rotating force on the rotating carrier. These lateral forces ofthe operating fluid on the rot-ating carrier not only cause friction and wear and thereby loss of porer but also tend to lift the rotating carrier in its bearings away from the abutment at the point of running Contact, thereby causing a. leak. of the operating luid and a further loss of power. 'By my construction, however, wherein the caps are connected to the rotating carrier in such a manner that the abutmentat the-point of running contact is embraced at the inner side by the rotatin carrier and at the outer side by a cap and y the further providing of the cap at this point with an opposing force substantially equal to the non-rotating force on the carrier, through the chambers 31 and ports 32, above referred to, the rotating carrier is held in perfect running con-v tact with the `wall ofthe chamber 7a. In other words, the Wall of the chamber and the carrier may be ground so as to have a. perfect running fit and through the aid of the caps contacting with the outer face of the abutment, said rotating carrier will be held in the same predetermined position, regardless of the varying fluid pressure on the rotating carrier and regardless of the fact that there is necessarily a slight side play in. the bearings of the rotating carrier.

Furthermore, the accumulation of the lubricant. in the chambers 3l forms in eiecta lubricant support furthe caps, which causes the caps to run freely and smoothly ,on the abutnient, and lhrouejh the counterbalancing of the non-rotating 7threes, euses the piston carrier to practically float in the cylinder ir perfect peripheral balance with no lateral or non-rotating strains thereon` By my improved structure 1 provide highly etlicient and durable rotary engine and one that is not limited to the use of :steam as a driving medium but one Operable under the influence of gas, air, combustion, or other operating Huid.

'hat. is claimed is:

1. In a rotary engine, a cylinder, flanged heads secured to the ends of the cylinder and each provided with an eccentric hub, a. power shaft journaled through the eccentric hubs of the heads, a rotatable piston carrierh secured to the shaft and provided with pie ton guide-ways,- :1 piston slidably mounted in each guide-way, each piston having longitudinally projecting stems at opposite ends, rings mounted on the eccentric hub of'each tiangcd head, said rings overlapping each other and having movement one on the -other with the innermost ring movable on ceive the corresponding stein of the correspondingpiston to support and balance the pistons, a vaive, and means for operating the valve to'supply the operating tiuid to the cylinder according to' the varying loads,

2. In a rotarj; engine, a cylinder, fiauged heads secured to the' ends of the cylinder and each provided with an eccentric hub, a power shaft. joprnaied through the eccentric hubs of the heads, a rotatable piston carrier secured to the' shaft and provided with piston guide-ways, a piston slidably mounted in each guide-way, each piston having longitudinally projecting stems at opposite ends, rings mounted on the eccentric hub of cach fianged head, each ring havingr a lug provided with a bearing to receive the correspondingstcm of the corresponding piston to supporty and balance the pistons, a valve, and means for operating the valve to supply the operating fiuid according to the varying loads.

3. Tn a rotary engine, a cylinder, heads secured to the ends of the cylinder and each provided ivith an eccentric hub, a. power shaft journaled through the eccentric hubsv of the heads, a rotatable piston carrier secured to the shaft and provided with piston guide-Ways, a piston slidably mounted in each guide-way, each piston having longitudinally projecting stems atopposite ends.

. rings mounted on the eccentric hub of each head, said rings circumfercntially overlapping each other and having movement one on the other vviththc innermost. ring movable on the corresponding eccentric hub,each ring having a lug provided with a bearing to receive the corresponding stem of the cor. responding piston to support and balance the pistons, a valve chamber having communication with the cylinder. a valve mounted in the valve chamber, and a governor mechanism having connection with the valve to operate the latter automatically to supply the operating Huid according to the var vng loads.

` 4. In a rotary engine, a cylinder, flanged disk heads secured to the ends of the-cylinder and cach provided with an eccentric hub, a power shaft. journaled through the eccentric hubs of the heads, a rotatable piston cnrrier secured to the shaft and provided with piston guidoways, a piston slidalily mounted in each guide-way, each piston having longitudinally projecting stems at. opposite ends, rings mounted on the eccentric hub of each flanged head, said rings circumferentialiy intereng'aging and having movement one on the other with the innermostring movabie on the corresponding. eccentric hub, each ring having a lug provided withv a bearing to receive the corresponding stein of the corresponding piston to support and balance the pistons, the upper ends of said lugs being curved to correspond with the curvature of the Hanges of sa'id heads and oscillating against said tianges, the 'lugs beingl of a. thickness equai to the thickness of both' rings and having their inner ends curved to correspond vvith the curvature of the outer circumference of the corresponding rings, said 'lugs oscillating between the tianges of the heads and the circumference of thex rings, a

.valve, and means for operating the valve to supply the operating tiuid according to 4the varying loads.

5. In arotary engine, a c viinder, flanged disk heads secured to the ends of the cylinder, a power shaft journaled eccentrically through the heads, a rotatable piston carrier secured to the shaft and provided with piston guide-ways` a piston slidably mounted in cach guide-way, means operable Within the flanges of the heads and contacting with the Ranges and operatively connected to the pistous to support and balance the latter, a. valve, and means operatively connectedwith the valve to supply the operating fluid according to the varying loads.

6.' In a rotary engine, a cylinder, heads secured to the ends of the cylinder, a power shaft journaled eccentrically through the heads. a rotatable piston carrier secured to the shaft and provided with piston Iguideways, .a piston slidably mounted in each guide-way, rings having oscillatory movement with relation to and upon each other and connected to the pistons to operate the same, said rings having inter-engaging parts to counterbalanee the pistons.

7. In a rotary engine, a cylinder, heads secured to the ends of theicylinder, a power shaft journaled eccentricnlly through the heads, a rotatable piston carrier secured to the shaft and provided with piston guideways, a piston slidably mounted in each guide-way, combined piston supporting and balancing means disposed at the ends of the pistons and having operative connection therewith, a valve, and means for operating the valve. Y

8. In a rotary engine, a cylinder, an abutment rigidly mounted in the cylinder, heads secured to the ends of the c vlinder, a power shaft iournaled eccentricaily through the heads, a rotatable piston carrier secured to the shaft and provided with piston guideways. a piston slidably mounted in each guide-Way, counterbalancing means having veonnnon operative connections with the connection with the pistons to support andr balance the latter, a valve, and means operatively connected with the valve to operate the latter automatically.

10. In a rotary engine. a cylinder, an abutmentfixedly secured in the cylinder and hav- `ing its ends reduced, heads-secured to the ends of the cylinder, caps telescoping the reduced ends of the abutment and provided with slotted openings` a rotatable piston carrier secured to said shaft and provided with piston guide-waysfa piston slidably mounted in each guide-way with portions of each piston projecting through said slotted openings oz-' the caps, counterbalancing means for the pistons interposed between the heads and said caps and operatively connected to the projecting parts of the pistons, a valve and means for operating the valve, to supply the operating [luid to the cylinder according to the varying loads.

11. In a rotary engine, a` cylinder. an abutment fixedly mounted in the cylinder and having its ends reduced, a power shaft journaled eccentrically through the heads, caps confined within the cylinder and telescoping with the reduced ends of the abutment and provided with slotted openings, a

llrotatable piston carrier secured to the shaft and .provided with piston guide-ways, a piston slidably mounted in each guide-way, each piston having parts projecting through the openings of said caps, means mounted between each head and the adjacent cap and operatively connected to the projecting parts of the pistons to balance the latter, a "alve,

and means for ope-rating the valve to supply the operating fluid to the cylinder.

12. In a rotary engine, a cylinder, an abutment rigidly mounted in the cylinder, caps teiescoping with the ends of the abutment, heads secured to the cylinder in spaced -elation to said caps, a power shaft journaled eccentricallv through the heads and caps, a

rotatable piston carrier secured to the shaft and rovided with piston guideways, a piston slide. ly mounted in each i'eide-Way, means operable between each hea and the adjacent cap and having operative connection withv the pistonsto sup ort and balance the latter during the centri gal force developed incident to--operation of the rotatable piston carrier, a valve. and means for operating the valve to supply the operating fluid to the cylinder.

13. In a rotary engine, a cylinder, an abutment rigidly mounted in the cylinder, caps telescoping with the ends of the abutment and provided with openings, heads secured to tbecylinder, a .power ,shaft journaled eccentrically through the heads and caps. a rotatable piston carrier secured to tbe shaft and provided with piston guide-ways, a piston slidably mounted in each guide-way and having parts projecting through said openings of the caps, said heads having eccentric hubs, inter-engaging rings movably mounted ou said eccentric hubs and having operative connection with the projecting parts of the pistons to counterbalance the latter during operation of the piston carrier, a valve. means for operating the valve automatically, and a by-pass to supply the operating fluid to the cylinder independently of the valve operating means.

14. In a rotar)Y engine, a cylinder. heads provided with piston guide-ways. a piston.

mounted in each guideway to slide relative to the carrier, inter-engaging rings counected to the pistons for counter-balancing the pistons during the operation of the piston carrier, a tluid inlet. a valve interposed between the inlet and the cylinder, and means for operating the valve to supply the operating Huid to the cylinder.

15. The combination with a cylinder, a fixed member within said cylinder, a rotatable member within said fixed member, sliding pistons mounted for radial movement on said rotatable member. means for supplying an operating fluid between said members to operate the rotatable member, of a fluid pressure means to` oppose and counterbalance the non-rotating forces of the operating fluid on said rotatable member, and means operatively connecting the pistons together to overcome the centrifugal force incident to rotation of the rotatable member and thereby counterbalance the pistons.

16. In a rotary engine, a cylinder, an abutment rigidly mounted in the cylinder, caps telescoping with the ends of the abutment and provided with radial openings, heads secured to the cylinder in spaced relation to said caps, a power shaft journaled eccentrically through the heads, s. rotatable los piston carrier secured to the shaft and proisc.

,a piston slidably mounted in each guideay. means t'or securing said caps to the ends of the said piston carrier, means eoni strueted and arranged` and interposed he.-

tween eaeh head and lthe adjacent cap and having operative connection with said pisg tous through thn openings or the caps to counterlmlance the pistons during operation thereof ineident to operation of the piston carrier. and means for suppiying operating tluid to the eyiinder according to the varying' loads. t

13.1n a rotary engine, a cylinder7 an abutment in the cylinder. caps teles'eoping with' the, ends of the abutment, the exterior of the abutment being constructed to provide #luid rereiving chambers between the raps and the, abutment. said abutment having ports leading into said chambers, heads secured to the cylinder, a power shaft journaled through the. heads. a` r iaiv piston carrier seemed io the shaft and provided with piston 'uide\vay-a pisxons slidablc in z the. guidon-nys, means ior counterhalaneine y the pistons. means for connecting the caps to the iiston carrier and iin-ans for sun ilV- .Y

ing operating` lluid to the Cylinder to drive the piston carrier.

19.11) a rotary engine, a'ffylinder.y an abutment in the. Cylinder. raps teleseoping with the ends of the abutment, the. exterior of the abutment. being eonstructiul lo provide i'iuid receiving ehamhers between the- Caps and the abutment, said abutment. having ports leading into s id ehambersJieads secured to the cylinder, a power shaft iournaled through the heads, a rotatable piston carrier secured to the. shaft and provided with piston guide-ways, pistons slidable in the guide-Ways, means for connettine,r the pistons whereby one piston eounterbalanees the other. and means for supplying an op erating fluid to the cylinder.

Q0. In a, rotar)` engine. a cylinder,v an abutment xedly mounted in the cylinder. a rotary piston carrier journaled in the cylinder and provided with piston guide-Ways. pistons mounted in the pist-on carrier and slidahle relatively thereto, means for coun-l terbalancing the pistons, means for supplying operating tuid to the cylinder to operate the carrier. and means constructed and arranged to utilize a portion of the operatl'ing Huid to equalize the non-rotating force of the operating fluid on the rotatable carrier to counterhalance the same.

21. n aV rotary engine. a cylinder, an abutment fixed in the cylinder and reduced at. its ends and at its reduced ends provided with ribs7 caps tting over the reduced ends of the abutment ind coperating with the ribs to provide fluid receiving chambers= the abutment havingports leading into the Chambers, a rotatable piston carrier journaled in the cylinder and connected to the raps. pisirns. mounted in the-carrier to -slide relatively thereto, and means for supplying operatin,r iiuid lo the cylinder aecordiin,Y to the varying' toads. a portion ot the operating iiuid entering' said chambers through the ports of the abatuzent, for eqnalizing the teral force of the operating duid on the piston carrier to eouuterbahinee the same.

The combination with two fixed members having circumferential contact with eaeh other. a movable member within the innermostfixed member and means t'or supplying an operatingr fluid between the innermost member and the movable member to arranged to utilize a. portion of the operating tluid to eounterlmlanee the movable member.

Q3. The combination with two fixed members having circumferential contact Awith each other. a movable member within the innermost lixed member. said movable member having pistons; mounted therein. and means for supplying au operating?r tiuid between i the innermost fixed member and the vmovi able member to operate the latter. of means 'constructed and arranged to utilize a portion of the operating tluid to eounterbalanee the movable member, and means for coun- `terbalancing the pistons. Y

Q4. The combination with two fixed members having circumferential contant with each other. a movable member within the l innermost fixed member, said movable member having pistons mounted therein. and means for supplying an operating fluid between the innermost fixed member and the mo able member, of means constructed and arranged to utilize a portion of the operating fluid to counterbalane-e the movable member, and sets of interengagiug rings eecentrieally mounted adiacent said members` to counterbalance the pistons.

25. The combination with two fixed members having circumferential contact ivith .ach other, a movable member within the. innermost fixed member,said movable member having pistons mounted therein to slide relative to the movable member, and means for supplying an operating duid between the innermost xed member .and the movable member, of means constructed and arranoed to utilize a portion of the operating fluidA to operate the latter, of means constructed and.

counterbalance the movable member, and means constructed and arranged adjacent said members to counterbalance the pistons.

26. The combination with fixed members having circumferential contact with each other, a rotatable member within the innermost fixed member provided with pistons slidablc relative thereto and means for supplyingan operating fluid between the innermost fixed member and the rotatable member, of means constructed and arranged to utilize a portion. of the operating fluid to' Vcounterl'ialance the rotatable member, and

means constructed and arranged adjacent said members for connecting Caid pistons together to countcrbalancc them against the centrifugal action incident to rotation of the rotatable member.

27. In a rotary engine. a cylinder, an abutment rigidly mounted in the cylinder, and having its ends reduced, heads secured to the ends of the cylinder, a. power shaft journaled through the heads, a rotatable piston carrier fixed to the shaft within the. cylinder, pistons mounted iu tbe carrier, to slide relative thereto, caps fixed to the piston car rier and teleseoping with the reduced ends of the abutment. to form fluid receiving chambers, means for supplying an operating fluid to the rotatable carrier, means to convey a portion of the operating fluid to said chambers to create an opposing force on the caps to equalize the lateral force of the operating fluid or. said rotatable carrier` a valve, and means for o ,erating the valve.

28. In ay rotary engine, a. cylinder,'an abutment rigidly mounted in the cylinder and having its ends redtuwl, heads secured to the ends of the cylinder. a power shaft journaled through the heads, a rotatable piston carrier fixed to the shaft within the cylinder, pistons mounted in the t-aLrier to slide relative thereto, caps fixed to piston carrier and telescoping with thc reduced ends of the abutment to form fluid receiving chambers. and means to transfer a portion of the operating fluid to oppose the non-rotating force of the operating fluid against the rotatable carrier to counterbalance the pistoncarrier. means constructed and arranged between each head and the adjacent cap and having operative connection with. the pistons to eounterbalancc the latter, a valve, and means for operating the valve.

29. The-combination with two flxed members having circumferential contact with each other. a movable member within the innermost fixed member and means for sup- --plying an operating fluid between they movable member and tbe innermost fixed membei', 'of means constructed and arrangiert tn 1 transfer a portion of the operating fluid on the outer side of the innermost fixed member and means to utilize the transferred final to oppose the non-rotating force of the op eratmg fuid to counter'oalance .the movable member.

30. The eombinationwith a cylinder, a fixed member, a movable member, and means to supply an operating fluid between said members, of means arranged to transfer a portion of the operating fluid to the outer side of the fixed member, and means for utilizing the transrerred fluid on the out side Aof the fixed member to eounterbalancc the movable member, the utilizing means including a movablev member connected to said first named movable member.

31. The combination with a cylinder, a fixed member, a rotary member, the rotary member having radially slidablepistons and means to supply an operating fluid between said members, of means constructed and arranged to transfer a portion of the operating fluid-to the outer side of the fixed member, and means for utilizing,r the transferred Huid on the outside of the fixed member to counterbalance the rotary member,- ihe utilizing nie-ans including a. movable member, and means constructed and arranged to operatively connect the pistons to counterbalance` the'latter during operation of the rotary member under the influence of the operating fluid.

32. Tle combination with a cylinder, a fixed member, a rotatable member, the rotatable member having radially slidable istons and means to supply an operating uid between said members, of means constructed and arranged to transfer a portion of the operating fluid to the outer side of the fixed member, andmeans for utilizing said translOO ferred portion of the operating fiuid on the y outside of the fixed member to counterbalance the rotatable member, the utilizing means including a movable member, and

means connecting the pistons whereby one` piston counterbalances the;other during operation of the rotatable member under the inliuence of said operating fluid.

33.11": a rotary engine,'a cylinder, an abutment fixed in the cylinder and having its ends reduced, heads secured to the ends ot' the cylinder, a power shaft journal-ed in said heads, a. rotary piston carrier secured to said shaft and provided with piston guide-ways, pistons slidably mounted in the guide-ways. the abutment having ports at its reduced ends, caps secured over the reduced ends of the abutment to provide fluid receiving chambers at opposite ends ofthe abutment which fluid enters the chamber by way of said ports and which counterbalances the piston carrier, said caps having openings and the pistons having parts projecting through the openinos, and means mounted adjacent the heads of the cylinders and operatively connected to the projecting portions of the pistons to eounterbalance the latter during rotation of the piston carrier, a valve and means for operating the valve.

3l. The combination with a cylinder, a fixed member, a movable member, and means for supplying an operating fluid between said members, of means constructed and arranged to transfer a portion of the. operating fluid to the outside of tlie fixed member at the ends only of the latter, and means for utilizing the fluid on the outside of the fixed member to counterbalance the movable member.

The combination with a cylinder, a fixed member, a movable member, and means for supplying an operating tiuid between said members, of means constructed and arranged to transfer a portion of the operating fluid to the outside of the fixed member at each end of the latter, and means to utilize the transferred fluid on the outside of the fixed member at the ends thereof to eoanterbaiance tbe movable member, the utilizing means at one end being independent of the utilizing means at the opposite end.

3G. The combination with a cylinder', a fixed' member, a rotatable' member, and means for supplying an operating fluid between said members, of' means constructed andarranged to ltransfer a portion of' the operating fluid to the outside of tbe fixed member at each end of tbe latter and means to utilize the transferred portion of the operating fiuid on the outside of the fixed member at its ends only to counterbalanee the rotatablemember, parts of said utilizing means being carried by the rotatable member for rotation therewith. n

37. The combination with a'cylinder, a

- fixed member, a movable member within the fixed member and means for supplying an operating fluid between said members, of means composed of parts carried by the tlxed and movable members to provide chambers on the outside of the fixed member -to receive a portion of the operating fluid i fixed member, a movable member, and means for supplying an operating fiuid between the members, of means constructed and arranged to transfer a portion of the operating fluid to the outside of the fixed member and means to utilize the transferred operating fluid to oppose the non-rotating forces of the operating fluid on the movable member to counterbalance the same, said utilizing means including a fioating member.

40. The combination with a cylinder, a fixed member, a movable member, and means for supplying an operating fluid between said members, of means constructed and arranged to transfer a portion of the operating fluid to the outside'of the fixed member, and means to utilize the transferred operating fluid to balance the movable member, said utilizing means including a,`iloat' ing member carried by the movable member.

41. The combination with a cylinder, a xed member Within said cylinder, a movable member within said fixed member, and means for supplying an operating fiuid between said members to operate the movable member, of means to transfer a portion of the operating fluid to the outer side of said.,

fixed member, and means operated by the transferred fluid to counterbalance the movable member.

42. The combination with a cylinder, a fixed member within said cylinder, a movable member witbin said fixed member, and means for supplying an operating fluid between said members to operate the movable member, of means to transfer a portion of the `operating fluid to the outer side of the fixed member, and means for utilizing tbe transferred portion of the operating fiuid on the outer side of tbe fixed member for crean ing opposing force on the movable meinber substantially equal .to the lateral force of the operating fiuid on the movable member.

43. In a rotary engine, in combination, a

cylinder, a rotatable piston carrier mounted in the cylinder, pistons carried by the carrier, means for supplying an operating fluidv between the carrier and cylinder to operate tbe-carrier, and means constructed and arranged to receive a portion of the fluid delivered between the carrier and cylinder, and devices for utilizing the same to countcrbalance the carrier.

ffl. In a rotary engine, in combination, a cylinder` an abutment fixedly mounted in the cylinder, a rotatable carrier journaled in the cylinder and having a flange at each end adapted to overlap the sides ofthe abutment, means for supplying operating fiuid between the carrier and the abutment to operate the carrier, and means constructed and arranged to transfer a portion of the operating firid to tbe outside of the abutment, and means to utilize the transferred portion of the operating fiuid on the outer side of the abutment between the latter and the cylinder to counterbalance the rotatable piston carrier.

45. In a rotary engine, in combination, a cylinder', an abutment within the cylinder, a

rotatable carrier journaled in Vtbe cylinder, and located within said abutment, means tor supplying an operating fluid between the abutment and carrier to operate the latter, and means constructed and arranged to transfer a portion of the operating tinid to the outside of the abutment for action against the ends of the carrier to overcome end thrust on the latter.

46. In a rotary engine, in combination, a cylinder, a tixed member, a rotatable carrier iournalcd in the cylinder, and located within the tixed member, means for supplying an operating fluid between the'eylinder and carrier to operate the latter, and means coustructed and arranged to transfer a portion ol the operating fluid to the outer side of the fixed member, and means to utilize the transfer-red tlnid to provide for a'peripheral balanco of the movable member.

47. in a rotary engine, in combination, a cylinder, a rotatable piston carrier journaied in the, cylinder, pistons carried by the carrier, means for supplying an operatin, \,r fluid bet.veen the cylinder and the rotatable car rier to operate the latter, and means constructed and arranged toircceive a portieri of the operating fluid, and devices for utili?.- ing the same to eonnterbahtnce the carrier during the entire rotation of the carrier.

4S. In a rotary engine` in combination, a cylinder, a power shaft jonrnaled in the cylinder, a rotatable piston carrier seem' ft to the shaft, pistons carried by the carrier, a valve` means for operating tite valve to snp ply the operating tluid to' the c vlinder to drive the carrier, and a set of rings operatively connected to the pistons at each end of the carrier, said rings 'having interengaging parts whereby one. piston balances the other in all parts of the revolution of tho carrier.

49. In a rotary engine, in eon'ibination, a cylinder. a power shaft journaled in the cylinder. a rotatable piston carrier secured to the shaft, pistons carried by the carrier, di vices operatively connected to the pistons to hold tbe pistons in constant running joint with the cylinder wall, and means for corr meeting the devices whereby one of the pistons balances the other duringr all parts of the rotation ol" the carrier.

5). ln a. rotary engine, in combination, z. cylinder, a power shaft journaled in the c vlinder,` a rotatable piston carrier secured to the shalt. pistons carried b v the carrier, a valve. means for operating the valve to sup pl)Y the opernieg fluid to the cylimler t:-

drive the carrier. means constructed and arranged and operatively connected to me pistons to balance the latter, one piston balana ing tbe other in all parte ofthe revolution ot' the carrier with the pistons having a eonstant running joint with the c vliuder wall, and means constructed and arranged to transfer a portion of the operating fluid from between the carrier and cylinder for cooperating with the operating fluid between the carrier and cylinder to oppose the nonrotating force ot the fluid on the piston carrier to etfect a balancing action upon the carrier. i I

:31. ln a rotary engine., in combination, a cylinder,'a power shaft jonrnaled in the cylinder, a rotatable piston carrier secured to the shaft, pistons carried by the carrier, a valve, means for operating the valve to supply the operating fluid to the cylinder to drive the carrier, means constructed and arranged and operativeiniY connected to the pistous to balance the latter, one piston balancing the other in ail parts of the revolution of the carrier with the pistons having a conetant running joint with the cylinder wall, means constructed and arranged to transfer a portion of the operating fluid from between the carrier and cylinder exteriorly of the carrier, and means for utilizing the transferred operating uid to counterbalance the rotatable piston carrier.

52. ln a rotary engine, a cylinder, an abutment, a rotary carrier journaled in the cylinder and located in said abutment, pistons carried by the carrier` means constructed and arranged to snpplyan operating fluid to the cylinder to rotate the carrier, and means` constructed and arranged to transfer a portion of the operating fluid to the outer side of the abutment, said carrier having means operated upon by the tanserred tluid to provide for a 'peripheral balance of the carrier.

5ft. ln a rotary engine, in combination, a cylinder, a carrier journaled in the cylinder, pistons carried by the carrier, means to supply the operating Huid to the eylinder to operate the carrier, a tioating member secured to the carrier and operated thereby, and means cooperating with the floating member to counter-balance the latter.

5l. The combination with a cylinder, a fixed member, a movable member with means for supplying an operating fluid between said members to operate the movable member, of floating members` having direct, connection with the movable member, and means constructed and arranged whereby 'the movable and floating members arc remnterbalanced one by the other.

55. 'ihe combination of a cylinder, a fixed member, a rotatable member within the txed member.v a movable member connected to the rotatable member and having a running contact with `the fixed member, means l'or 'supplying an operatingr fluid between said members for operating the rotatable member, and nie-.ins for receiving t' e. lubricant separated from the operating tlaid by eentritugal force and applying the same to the running contact between the movable member, pistons mounted on said carrier and j movable radially relative ther \io. a movable l member connected to thc carrier and having' running contact with the outer face ot' the fixed member. means for supplyingr said i 'l5 chamber with an operating;r fluid. and means 5 for receiving; thelubricant separated Vfrom the operating fluid by centrifugal force and applying the same to the. running contact between the movable member and the fixed member, whereby the movable member is supported on the fixed member, and the rotatable carrier caused to float in said chamber.

57 The combination of a cylinder, a fixed member located in the cylinder. and ha ving! a cylindrical chamber disposed eceentrieally to the cylinder, said fixed member having contact centrally thereof with the walls of the cylinder and at each end thereof spaced from the walls of the cylinder. a shaft centrally of the cylinder, a cylindrical carrier mounted on the shaft and having itsvouter Wall in Contact with the wall of the chamber, pistons mounted on the carrier and movable radiallyl relative thereto, movable members located at each end of the fixed member. and in the space between the fixed member and the cylinder, said movable members having running Contact with the fixed memlo ber, means for connecting the movable niembers with the carrier, means for supplying said chamber with an operating fluid. and means for receiving the lubricant separated from the operating fluid by centrifugal force.

5 and applying the saine to the running contact between the movable members and the i tween said members for operating: the robers are supported and the carrier caused fixed members, whereby the movable inemto float in said chamber.

58. The combination of a fixed member, a

rotatable member within the fixed member. caps connected to said rotatable member and having running contact with the fixed meniber. means for supplying an operating fluid f l 5" between said' members for operating the rotatable member. said fixed member having pockets formed in its face contacting.1 with the caps and having passages leading Vto sail pockets whereby the lubricant in the operating fluid may be causedby centrifugal force to accumulate in said pockets and provide a support on whih the capsand rotating member float.

). The combination of a cylinder, 'a 'rotatable member withinsaid cylinder, meansA for supplying an operating fluid to the ro. tatable member for rotating the saine. and fluid pressure means for providing said rotatable memberwith an opposuugir torce substantially equal to the non-rotating force of 1 the operating fluid against. said rotatable member to eounterbalance the same during,` the entire rotation ofl the rotatable member.

(it). The combination with a cylinder, a

fixed member within'said cvlinder. a movable member within said tixed member, and means for supplying.r an operating fluid bctween .said members to operate the,mo\able u'embcr, of a fluid pressure means for pro- .'idinpr said movable. member with an oppos- 80 in;r force substantially equal tothe latei'al torce ot' the operating fluid against said movable member to counterbalance the same during the entire rotation of the movable member. 85 f 61..'f`he combination with' a cylinder. a

l fixed member within said cylinder, a ro tatable member within said fixed member, and means for supplying an operating fluid between said members to operate the ro 90 tatable member, of'v a fluid pressure means for providing said rotatable inembei' with an opposing force substantially equal to the non-rotating force of the operating! fluid 'against said rotatable member to coiinter- 95 balance the same during the entire rotation of the rota-table member.

(r2. The combination of a cylinder, a rotatable member within said cylinder. means for supplyingr an operating fluid to `the ro- 300 tatable nieinberfor rotating the same. and means for utilizing a portion of the operat me fluid to create. an opposing force on said vrotatable member substantially equal to th'e non-rotating force of the operating fluid against said rotatable niember to counterbalance the same.

(E3. The combination with a cylinder. a fixed member within said cylinder. a retatable member within said fixed member. 11u

means for supplying an operating fluid betafable member, and means t'oi' utilizing a portion of the operatin; r fluid to create an opposing force on said Habitable member substantially equal to the non-rotatiiig`r force ef the operating;r fluid against the. rotatable member to counterbalame the same.

(S4. The combination of a cylinder. a tixed member within the cylinder, a rotatable-1,20

meint-er -ind connect-ed to the rotatable member, and fluid pressure means acting on said caps fer providing a Yperipheral balance for said rotatable member.

65. T he combination of a cylinder, a shaft located centrally-if the cylinder, said cylllt! necting the.

indcr havingr a cylindrical chamber disposed rccen'trlcall to the shaft, a cylindrical carrier mounted rn thc shaft and located in said chamber with itsfiuter wall in contact with the wall of the chamber, radially disposed pistons mounted on the carrier, means for supplying;l a luid to Said chamber, and means l'or providing the. carrier with an opposing force substantially equal to the lat- 1. eral force ol' the liuid against the. carrier, to

counicrbalance the saine.

titl. 'lhe combination of a cylinder, a :shaft located centrally ot' the cylinder, said cylindex' having a cylindrical chamber disposed 15 ccceutrically to the shaft, a rotatable cylindrical carrier mounted on the Sli-.ift and located in said chamber, with its outer wall in contact with the. wall' of the chamber, pistons'inounted on the carrier and movable 29 radially relative thereto, means for holding!` the pistons in cont 1ct. willi the 'alle of the chamber as the carrier rotates, means for eounterbala:icing one piston by the other. means for supplying said chamber with a tiuid, and means for providing the carrier with an opposing force substantiall)7 equal to the lateral force of the tinid against the carrier. to counterbalance the same.

6T. 'lliel combination of a cylinder, a shaft 30 located centrally of the cylinder, said c vl- Inder having a cylindrical chamber disposed.

eccentrically to the Shaft, a rotatable cj:- lindrical carrier mounted on the :.lat't'. and located In the chamber with its outer wall in contact: with the wall ot the chamber. pistons mounted on the carrier and inm'able radially relative thereto, stationary eccentric bearings. rings (-.oiperating with the hearings i and connected to the pistons for holdin;r the 40 pistons in contact with the wall ot' the chainJ providing,1r the carrier with an opprsiug: foi-.1-

-snhslantially equal to the lateral torce ufg the fluid against the. carrier. to connterbalance tile-saine..

GS. 'l'lie combination of a cylinder. a shaf-i located cenlially of the' cylinder. a fixed abutment within the cylinder and haring a ment within the cylinder having a cylindrical chamber disposed ecceutricalll,Y to the v shaft. a rotatable cylindrical carrier mounted on the shaft and located in said chamber with its outer wall in contact with the Wall of the chamber, pistons mounted on the cal`- rier. and movable radially relative thereto, iin-ans for holdimgr the pistons in contact with the wail of the chamber. as the carrier rotates. means for connterbalancing one piston Vb i' the other. means for supplying said chamber with an opcratingtluid, and means for providing' the carrier with an opposing force substantially equal to the lateral force of the fluid against the carrier, to counterbalance the saine.

T0. The combination of a cylinder, a shaft loch-ted centrally of the cylinder, a fixed abutment within the cylinder and-having a c i'lindrical chalutier disposed eccentrically to the shaft, a rotatablel cylindrical carrier mounted on the shaft and` located in the chamber with its outer wall in Contact with the wall of the chamber, pistons mounted on the carrier and movable radially relative tlm-cio. stationary eccentric bearings,'rings coperating with the, bearings and connected with the pistons for holding the saine in contact with the wall of the chamber as the earrier rotates, means for connecting the rings whereby one piston counterbalance the other, means for supplying the chamber with an operating` fluid` and means for providing tlncarrier with :in opposing torce substantially equal to the lateral force of the operating tluid against the carrier. to counterbalance the Same.

Tl. 'llrc combination ol' a cylinder. a Shaft lot-ated eentrallj.' ol' tht cylinder, said cylinder having: a cylindrical chamber disposed ei'ccntrically to tho shaft. a rotatable cylindi-f-:il carrier mounted on the shaft and l0-l cated in said chamber` with its outer u all in contact with the wah of the chamber` pistons mounted on the carrier and movable radiall).r relative thereto. means for holding the pistons in contact. with the walls of the f chamber as the carrier rotates, means for e:noten-balancing one piston b v the other,

c \'liiidri ':\l chamber disposed 'eccentric-illy 5 to the shaft, a cylindrical carrier mounted on the shaft and located in said clniintiber with its outer wall in contact with the wall of the chamber. radially disprsed pistons mounted on the carrier and slidable relative thereto` means for supplying,r an operating fluid to the chamber. and f 60 means for providing the. carrier i'ith an o posing foi-ee substantially equal to t ic cated in the chamber with its outer wall in 35 located' centrally of the cylinder. an abutnn-ans for supplying said chamber with a. llnisl. and means for utilizing a portion of lla operating tluiil. for-providing the rotatable carrier with un opposing force substantially equal to the lateral force of the i opt-:ating fluid on the carrier to counter- -v balance llitv Stime.`

7;. The combination of a cylinder, a shaft lof-ated centrally of the cylinder. said cylindvibaring a cylindrical chamber' disposed cewntricallv to the shaft. a rotatable cyliudrical carrier mounted on the shaft and lol crntavt with the/null' of thc chamber. pis-