US869032A - Rotating engine. - Google Patents

Description

PATENTED OCT. 22. 1907 F. STRATTON.

ROTATING ENGINE- v APPLICATION FILED DBO. 6, 1906.

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PATENTED 061222. 1907.

F. STRATTON.

ROTATING ENGINE.

APPLIQATION FILED DBO. e. 190s.

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. @MMM No. 869,032. PATENTBD 00122. 1907.

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. ROTA'TING ENGINE.

APPLICATION FILED D110. e, 190e.

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PATENTED OCT. 22. 1907.

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ROTATING ENGINE.

APPLIGATION FILED 1320.6, 1906I PATENTED 00T. 22, 1907.

No. 869.032.v

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llIIglIllI/IIJ No. 869,032. PATENTED OCT. 22. 1907.` P. STRATTON.

RUTATING ENGINE.' APPLICATION FILED 1320.6, 1906.

8 SHEETS-SHEET` 6.

PATENTED 00T. 22. 1907.

P. STRATTON.

ROTATING ENGINE.

APPLICATION FILED D1|(J.6.,1906.A

8 SHEETS-SHEET 7.

1HE NuRRls Permis co., WASHINGTON, nA c.

l N. 869,032, PATENT-ED 00T. 22. 1907.

P. STRA'TTON..

ROTATING ENGINE.

APPLIUATION FILED DBG. 6, 190B s SHEETS-SHEET 8.

H accessible to UNITED sTATEs PATENT oEEieE.

FRANKLIN STRATTON, OF BUFFALO, NEW YORK, ASSIGNOR TO THE STRATTON ROTA'IING ENGINE COMPANY, OF BUFFALO, NEW YORK, A CORPORATION OF ARIZONA TERRITORY.

ROTATING ENGINE Specification of Letters Patent. Application filed December 6,1906.

To all whom 'it may concern.'

Be it known that I, FRANKLIN STRATTON, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Rotating Engines, of which the following is a specification.

This invention relates to rotating engines, such as are driven by steam, air, or other fluid agents, and which may be used as a pump when power is applied thereto.

The primary object of my invention is the production of an engine of the rotating type which is particularly adapted for use in a` traction-wheel and forms part thereof, and which serves to revolve said wheel.

Another object is to provide an engine which can be easily converted into a pump, by replacing the center valve with a similarly constructed valve havingI larger ports so as to increase the capacity and effectiveness of its pumping-action.

Another object is to provide an engine in which vibration and friction are reduced to a minimum, and in which dead-centers are dispensed with.

Still further objects are, the production of an engine which is economical inl the use of the motive-power, compact and simple in construction, easily reversible, all parts, and well balanced, and also to improve the details of construction and operation so as to produce points of advantage which will be amplified as they occur hereinafter.

With these and other objects in view, I have illustrated my invention in a representative way, the mechanical elements used in combination in preferred form, being those now thought to be best adapted under the principle involved, in order to obtain the highest elliciency; and as I do not only claim the combination of mechanical elements'herein shown and described, but claim the essential elements in any arrangement and construction adapted for use under the principle involved, it is to be understood that this invention can be embodied in various ways, which will be readily understood by those skilled in the art.

In the accompany ing drawings, my invention is illustrated for use as a steam-engine, but I do not wish to limit myself to such use, since air, gas or any other vapors may be used in propelling the engine; and if desired, power may be applied to adapt the same for use as a pump.

The invention consists in a plurality oi rotating piston-cylinders constituting a spider and having pistons reciprocal therein, an inlet and an exhaust for the motive power common to all cylinders, a fixed track or guide, and devices connected with the pistons to cause the spider to rotate when the motive power acts upon the pistons.

My invention further consists in the construction, arrangement and combination of elements or parts to be hereinafter described and particularly pointed out in y the appended claims.

In the drawings,-Figiue l is a side elevation of a traction-wheel showing my invention embodied therein, part of a running gear of a vehicle being shown in connection therewith. Fig. 2 is a side elevation of my improved engine showing the same adapted for stationary use. Fig. 3 is a front elevation of the same. Fig. 4 is a front elevation showing the engine inclosed within a casing, the lower portion of which is shown in section. Fig. 5 is a vertical section taken just outside of the spider and its rollers and through one cam. Fig. 6 is a vertical section taken through the center of all the cylinders. Fig. 7 is a vertical section taken at right angles to the plane of Fig. 6. Figs. 8 and 9 are partial sections in the same plane as that of Fig. 6. Figs. l0 and Il are side elevations of the spider viewed from opposite sides. Fig. l2 is an edge view and Fig. I3 a vertical section through the spider and its trunnion. Fig. I4 is a perspective detail of the trunnion. Fig. I5 is a vertical section through the casing. Fig. I6 is a section through Fig. I5 on the line 16-16. Fig'. I7 is an enlarged sectional detail showing the catch in the casing. Figs. I8 and I9 are side and edge views of the link mechanisms for connecting the pistons in pairs. Fig. 20 is a disconnected edge view of one of the linkmembers of one of the link-mechanisms. Fig. 2l is a plan view of the device shown in Fig. IS. Fig. 22 is a section on the line 22-22 of Fig. 2. Fig. 23 is a perspective detail of the cam. Fig. 24 is a side elevation of the same. Fig. 25 is a perspective detail of the regulating-valve.

Referring to the drawings in detail, corresponding numerals of reference refer to corresponding parts in the several iigures.

Reference being had to Fig. I, the numeral I designates the running-gear of a vehicle, and 2 a tractionwheel journaled to revolve in said running-gear. Wheel 2 comprises the wheel-felly 3 having suitable tires 4. and inwardly directed lugs 5 to which are connected lugs 6 extending from the engine, designated 7, which serves as the hub of the wheel.

When used as a stationary engine, standards S are provided, as shown in Figs. 2 to 7, in which the engine is supported. It is apparent that the running-gear shown in Fig. l or the standards just referred to, must serve to support the engine and both carry boxes 9 which support the hollow hubs l0 of two cams or roller guides Il (see Figs. 7 and 23), which hubs form the bearing for a hollow trunnion I2 on which the revolving spider or cylinder-body 13 is supported. Said spider or cylinder-body is preferably cast in the shape best shown in Figs. 10, 11. and 12, with details of construction which will be described below', and transversely through its thickened hub is drilled an axial hele having radial recesses 14 in one end of the hub an d an annular recess 15 in the other end. The trunnion is preferably of tool steel, and is forced tightly into this hole. 1t has exterior wings 1G which fit into the radial recesses 14, and exterior threads 17 at a proper point on its body so that when the wings fit accurately into the recesses, a collar 1S can be screwed onto the thread and into the annular recess 15, thereby rmly and yet removably centering the trunnion within the casting and affording a steel shaft upon which the whole can revolve within the hollow hubs ot' the cams. This l consider an important feature of my invention. because it simplifies and cheapens the construction, permits the wearing parts to be made of steel, and also utilizes steel for those parts which must be accurately made or provided with ports.

The spider 13 contains four radial cylinders 20 notched at their outer ends, as at 2l, and within these cylinders are located properly packed pistons 22 h av i ng (,ugtwardly projecting piston-rods 23. A t the o'uter ends of the latter are cross-heads 24 projecting tlnough said notches 21 andconnected in dametric pairs, as best seen in Figs. 5, 1S and 19. Each end of each ci osshead carries an inwardly and laterally curved arm 25 (all the arlns curving in one direction from the pistonrods), and between the inner ends of each pair of arms is supported a box 2G having an opening which slides on a guide rod 27. The latter is preferably square and of steel,and its reduced inner end is stepped in a socket 2S in the spider near the hub of the latter', its body standing parallel with the adjacent cylinder7 and its reduced outer end is held in place by a nut 29 screwed into a threaded opening in the spider-see Fig. t5. This view shows the box 26 as a single member having an opening through it for the guide-rod, but in Figs. 1S to 22 half the opening is formed in the outer tace ot the box and a plate 30 is screwed or bolted to the box and forms the other half of the openingthus permitting the replacing of parts which may become worn. l consider the removability of the guide rods 2T an important feature of my invention, because they can readily be removed or replaced by taking off the casing described below, unscrewing the nuts 29, and withdrawing the rods bodily. Also, any one of the boxes can then be removed without disconnecting other parts of the machine than those attached to it.

Links 32 connect oppositeboxes in pairs, there being preferably two of these links on each side of the spider. 1n Fig. 5 the two upright links are shown moving astride the trunnion and bei ind the caln, and it will be understood that the other two links, which atthis time stand horizontal, connect the other two boxes on the other side of the spider-hence one pair of links does not interfere with the operation of the other. ly preference each link takes through an ear 33 formed on one box, in which it is adjustable between nuts 34 on either side of the ear', while the opposite end of the link is integral with the opposite box 26 in which one of two stub shafts 3G is journaled to revolve. 1f desired the links may be separate and provided with eyes through which said stub shafts may project. On said i t l i stirb shafts are journaled rollers 37 which travel on the active faces of the cams ll. l have described and shown stub shafts and rollers on beth sides of each box, and cams at both sides ofthe machine; but it is possible that one cam and one set of rollers could be omitted entirely, although I prefer the construction shown because it prevents the cramping of the boxes on the guide-rods.

The casing which incloses the spider is best shown in Figs. 4, 15, and 16, and is indicated in dotted lilies in Fig. 2. lt comprises an annular rim section 40 having internally projecting lugs 41 adapted to be bolted to the lugs G on the spider 13 of the engine', two end plates 43 whose peripheries tit theaxial ends of said section and whose centers have openings 44 of sufficient size to loosely inclose the hubs of the cams; and bayonet-joints 45 by which the end pla-tes are connected with the interposed rim section. 1n assembling the parts, after the bayonet-joint elements have been connected, a catch (best shown in Fig. 17 may be employed to prevent them from becoming disconnected. This consists of a stud 4G projecting inward from the rim section, and a spring-pressed bolt 47 carried by the end plate and whose tip engages behind the stud after the end plate has been turned so that the bayonet-joint members are engaged. invention, because it permits the readyremoval of the casing when access to the interior mechanism is desired, it holds the part of the casing in place against all ordinary vibration; and it provides a catch and a bayonet-joint which do so hold the parts connected and which permit their instantaneous disconnection when required.

The regulating-valve, best shown in Figs. G, 7, and 25 is a tubular member exteriorly shaped to fit the interior of the trunnion 12. The latter (Figs. 7 and 13) is formed with a large bore 4S at its outlet end, a smaller bore 49 at its inlet end, and an intermediate taperedportion 50 through which are cut four radial ports 5l, the extremities of the trunnion being internally threaded for the reception of the nipples 52 and packing to make a tight joint around the tubular valve, designated 53. 1t will be understood that the latter is normally stationary while the trunnion revolves. The valve 5?) has at its larger end a thread 54 for receiving nuts 55, between which and the nipple 51 there are ball-bearings 56', and it has at its smaller end similar threads 540 for nuts which adjust ball-bearings 560 against the nipple at the other end of the trunnion; an adjustinggear (5() being here interposed as described below. At opposite ends of the valve are stufiing-boxes 57, one connected with the inlet 58 and the other with the outlet 59 so as to permit the valve to rotate while the inlet and outlet remain stationary. Gear 60, fixed on the valve as above mentioned, is engaged by a sector G1 having a handle 62, and the sector is pivoted on a pin o?) projecting from the forward standards on the stationary engine, and from the running gear in the application of the engine shown in Fig. 1', the construction being such that when the handle is moved, the sector will turn the gear and the valve. Within its tapered portion the latter' is provided with an oblique partition (S4, on opposite sides of which are the inlet port and the outlet port (5G, both arranged so that they register with the port 51 in the trunnion 12 than which they are l consider this an important feature of my j of greater length so that the valve may be adjusted longitudinally Within the trunnion to take up Wear between these parts. I consider this an important detail of my invention, because it permits the adjustment oi the valve to take up Wear or its longitudinal removal for repair vor substitution both Without disconnecting other parts of the machine. The valve may well be made of tool steel to prevent its rapidly Wearing away, and if the size and the shape of parts therein are to be changed, it can be done by removing the valve only. Moreover, as described below the manipulation of a single lever which oscillates this valve within the tiunnion is sufficient to start or stop the engine, to drive it forward or backward, and to drive it at variable speeds; and this also I consider an important feature of the invention.

In operation, the steam is admitted through a cock (not shown) and let into the inlet 58, whence it fiows through the valve and by the partition therein is directed ont through the port 65. Ii the valve is set as shown in Fig. 6 so that this port is directed toward the shortest diameter of the cams, the engine will stand at rest; but by turning the valve in either direction while the cams remain stationary, the engine will be caused to rotate in that direction and at a speed proportionate to the degree to which the valve is turned', hence the manipulation of a single handle such as that numbered 62, Will start or stop the engine, will drive it in either direction, and Will control the speed. In Figs. 8 and 9 the valve' is shown as turned with respect to the camsA The result is that the inflowing steam passes out the inlet port 65, and through one ol the ports 5l in the trunnion when that port registers with the inlet port 65. Entering the cylinder, it moves the piston outward, and through the links this piston causes the opposite piston to move inward, while the exhaust steam in the opposite cylinder passes through the opposite port 5l in the trunnion, through the outlet port 66 in the valve, and ont the exhaust 59. Because the outlet end oi the valve is made oi larger diameter than the inlet end, the exhausting steam has a chance l'or expansion without retarding the rotation of the engine. As the opposite pistons move as just described, their rollers impinge against the active faces oi the cams and pi'oduce the rotation of the spider in a manner which will be clear, the direction of rotation depending upon the direction in which the valve has been turned, and the speed of rotation depending upon the degree to which the valve has been turned. It will be clear that by setting the cams upon the trunnion, the proper lead can be secured so that the engine will take in its live steam and exhaust its dead steam at points which will secure the highest eiiiciency olf action.

At diametrically opposite points, or approximately so, the active iace oi' each cam is concentric with respect to the trunnion of the spider on which it is mounted, said concentric portions being in arcs ol' circles of different diameters and serve to cause a meinentary. cessation of movement oi the pistons. These concentric portions are connected by eccentric or cam portions which cause the pistons to travel within the cylinders when the rollers ride over the latter. The cams are so affixed to the support that when the rollers ride over their concentric portions, opposite pistons are at their outer and inner limits ot travel, respec- V tively. This provides for the free escape of the fluidagent from the exhaust and consequently assures lree action and high eliiciency.

Having thus described my invention, what I claim is,

l. In an engine or the like, the combination with a rotating element having a plurality of radially disposed cylinders of a valve around which said rotating element rotates, a piston reciprocal in each cylinder, a fixed guide, and connections between opposite pistons and between the pistons and said guide.

2. 1n an engine or the like, the combination with a plurality of radially disposed rotating piston-cylinders, of a valve around which said cylinders rotate, a piston reciprocal in each cylinder, a fixed guide, and link-mechanism having' connection with opposite pistons and being guided oli said guides.

Ji. In an engine or the like, the combination with a plurality of rotating piston-cylinders, o1 a valve around which the cylinders rotate, a piston reciprocal in each c vlinder and having a piston-rod, means for connecting' the pistons in pairs, and a fixed cam or guide over which said connecting-means travel to govern the movement of the pistons and the rotation ot the cylinders.

si. In an engine, the combination with a spider having a plurality of radially disposed piston-cylinders, of a wheel-rim connected to said spider, a valve controlling the admission ot the duid-agent to and theexhaust ther-coi from said cylinders, a piston reciprocal in each cylinder. fixed guiding-means, and connections with the pistons traveling around said guiding-means and governing the movements or' the piston and the rotation of the spider.

5. The combination with a support, of a hollow valve having an inlet-port and an exhaust-port, a fixed cani or guide held on said support, a spider rotatable on said valve and having radially disposed cylinders with ports al; their inner ends for the admission land exhaust o1" the fluidagent, pistons connected in tandem and reciprocal within the cylinders, and means on the connections of' said pistons co-acting with said cam or guide to govern -the Inovement of the pistons and the rotation of the spider.

G. In a rotating-engine, the combination with a support, oi' a hollow-valve having an inlet and an exhaust, a spider rotatable around said valve and having a plurality of cylinders and a hollow trunnion extending from opposite sides thereof", a fixed cani or guide on each side of the spider through which said hollow shaft extends, pi" :ons

reciprocal in said cylinders, connectionsito said pi is guided on said cam or guide, and means ior adjusting the valve to position the inlet thereof in line with the vertical center ol. the engine or to either sides oi' the vertical center, for the purpose described.

T. In a rotating-engine, the combination with a support. of a hollow-valve having an inlet and an exhaust, a spider rotatable around said valve and having a plurality of cvlinders and a hollow trunnion extending from opposite sides thereof, a fixed cam or guide on each side of the spider through which said trunnion extends, pistons reciprocal in said cylinders, link-mechanisms connecting le pistons in tandem and having rollers adapted to travel on said cam or guide, and means for oscillating the valv within said spider to regulate the speed thereof", to govern the direction or rotation ol said spider, and to stop the engine.

S. In a rotating engine, the combination of a spider having radially disposed cylinders, a hollow center valve having its axis coincident with the axis of said spider, a fixed cani, pistons reciprocal in said cylinders, mechanism connecting the pistons in pairs and having rollers riding around said cani or guide, and means for guiding said mechanism on the spider.

il. In a rotating engine, the combination ol a spider having piston-cylinders connected by webs and a hollow trunnion extending from opposite sides of said spider, a tubular valve within said shaft and arranged to admit the fluidagent to and exhaust the same from the cylinders, fixed cams on opposite sides of the spider through which said hollow trunnion passes, pistons reciprocal in said cylinders, a link-mechanism on each side of. the spider connecting eoiso incident pistons and having a roller adapted to travel around said cam, and guides on said spider for guiding the link-mcchanisms.

1U. In a rotating engine, the combination ot a rotating spider having radially disposed cylinders and a center hollow trunnion tapered internally at a point between the cylinders to provide a tapered valve-seat, a hollow-valve in said trunnion having a correspondingly tapered portion tilting the valve-seat and having also an inlet-port and an exhaust-port, means tor movingl the valve lengthwise, means l'or rotating said valve, a lixed cam or guide, pistons reciprocal in said cylinders, and connections to the pistons adapted to travel around said cam or guide.

l1. ln a rotating-engine, the combination ot a rotating spider having a center bore and a plurality of radially disposed cylinders, a guide-rod parallel with each c vlinder, a hollow valve in the bore ot the spider having an inletport and an exhaust-port, a tixed cam or guide on each side oi' the spider, ypistons reciprocal in the cylinders, mechanism connecting the pistons in pairs and having` boxes fitting said guide-rods, a shaft in each box, and rollers on said shal't. adapted to travel around said cams or guides.

12. ln a rotating-engine, the combination ot a rotating spider having a center bore and a plurality ot radially disposed cylinders connected by webs, a hollow valve in the bore ol' the spider having an inlet-port and an exhaustport, a lixed cam or guide on each side ot the spider, a guide-rod parallel with each cylinder and removably secured to the spider, pistons re-iprocal in the cylinde s. and mechanism connecting the pistons in pairs and having boxes littingl said guide-rods, a shat't in each ot' said boxes, rollers on said shafts adapted to travel around said cams or guides, a gear atlixed to the hollow-valve, and a handle having a segment-gear in mesh with the gear o1' the valve.

l. in a rotating-engine, the combination with a spider having a center-bore and Iadially disposed cylinders, a hollow-valve in said bore having an inlet-port and an exhaust-port, means tor rotating said valve, a lixed cam or guide, pistons re u'ocal in said cylinders and each having a piston-rod, link-connections on the outside ot the spider having each connection with the piston-rods ot' opposite pistons. and rollers carried on said link-connections and adapted to travel around said cam or guide.

1-tA ln a rotating-engine, the combination with a spider ot' cast metal having cylinders therein and a central axial hole therethrough, pistons in said cylinder and means for driving them by the {luid-agent; ot' a steel trunnion iitting tightly into said hole, means t'or holding the trunnion within the spider, and ports t'or the admi on and exhaust ol' the duid-agent.

ing w adapted to engage said radial recesses and an exterior crew-tln'c:ul at a proper point, a collar on said tl'ir ad adapted to enter said annular recess, and ports for the admission and exhaust ot the duid-agent.

lli. In a rotating-engine. the combination with a spider having radial cylinders. pistons and piston-rods therein. and a trunnion and valve tor admitting and exhausting the iluid agent to and trom said cylinders: ol' guide-rods supported in the spider parallel with the cylinders, boxes moving on the guide-rods, and connections between the boxes and piston-rods.

1T, ln a rotating-engine, the combination with a spider having cylinder pistons and piston-rods therein, and a truanion and valve for admitting and exhausting the, fluidagent to and from said cylinders; of guide-rods parallel with the cylinders, sockets in the spider in which the inner ends ot said rods are stepped, nuts in the spider by which the outer ends ot. said rods are supported. boxes moving on the guide-rods, and connections between the boxes and piston-rods,

1S, In a rotating-engine, the combination with a spider having radial cylinders, pistons and piston-rods therein,

and a trunnion and valve for admitting 'the fluid-agent to and from said cylinders; o1' guide-rods supported in the spider parallel with the cylinders, boxes connected with the piston-rods and having pa ral openings moving on the guide rods, and plates detachably connected with the boxes andA having complementary openings moving on said guide-rods.

1E). In a rotating-engine, the combination with a spider having four cylinders, pistons and piston-rods therein` cross-heads on said rods, and boxes connected with the cross-heads; of links connecting the opposite boxes in pairs, the links which connect one pair ot boxes being on one side ot the spider' opposite trom those which connect the other pair ot' boxes, and a valve for the admission and exhaust ot the fluid-agent to and from said cylinders.

2t). In a rotatingl engine, the combination with a spider having tour cylinders, pistons and piston-rods therein, and boxes connected with said rods; ot' a trnnnion on which the spider rotates, a valve therein for the admission and exhaust'. ot the [luid-agent to and from said cylinders, and links connecting the opposite boxes in pairs, the links which connect one pair of boxes being on one side ot the spider' opposite from those which connect the other pair of boxes.

21. In a rotating engine, the combination with a spider having four cylinders, pistons and piston-rods therein, and boxes connected with said rods, of a trnnnion on which the spider rotates, a valve therein for the admission and exhaust o1' the lluid-agent to and from said cylinders, and links connecting the opposite boxes in pairs, the links which connect one pair o1 box s being `opposite from those which connect the other pair ot boxes, iixed cams in which the trunnion rotates, and rollers on the boxes traveling on thc active faces oi said cams, each pair of links standing astride said trunnion,

22A In a rotating engine, the combination with a spider having [our cylinders, pistons and piston-rods therein, and boxes connected with said rods, each box having stub shafts at one side ot the piston-rod and an ear at the other side; ot a trunnion on which the spider is secured, a valve therein for admitting and exhausting the tluidagent, non-rotary 'ams on said trunnion, rollers secured on the stub shat't and traveling on the active faces of the cams, and a link connecting each box with the ear on the box diametrically opposite.

23. In a rotating-engine, the combination with a spider having tour cylinders, pistons and piston-rods therein, and boxes connected with said rods, each box having stub shafts at one side oi' the piston rod and an ear at the other side; of a trunnion on which the spider is secured, a valve therein I'or admitting and exhausting the Iluidagent, non-rotary cams on said trunnion, rollers journaled on the boxes and traveling on the active faces of the cams. and a link connecting each box with the ear on the box diametrieally opposite, each link passing to one side ot said trunnion and heilig threaded where it extends through the ear, and nuts on the threaded portion at each side of the ear, i'or the purpose set forth.

24. In a rotating-engine, the combination with a rotary spider and its cylinders and pistons, a valve i'or admitting the tluid-agent to and exhausting it lfrom said cylinders, and cams with which said pistons co-act, of a casing comprising a rim member attached to the spider, and end plates det'achably connected with the rim member and having openings surrounding the hubs oi' d cams.

25. in a rotating-engine, the combination with a rotary spider and its cylinders and pistons, a `alve for admitting the iluid-agent to and exhausting it from said cylinders, and cams with which said pistons co-act', of a lasing colnprising a rim member surrounding the spider, end plates havinopenings surrounding the hubs of the cams, and bayonet-joints detachably connecting said plates and rim-member.

2G. In a rotating-engine, the combination with a rotary spider and its cylinders and pistons, a valve for admitting thc Huid-agent to and exhausting it from said cylinders, and cams with which said pistons co-act; of a casing comprising a rim member surrounding the spider, end plates having openings surrounding the hubs of the cams, del tachable connections between said end plates and rim its cylinders, a tubular valve-.within the trunnion and having inlet and with member, and catches for holding those parts together after the connections are engaged.

27. In a rotating-engine, the combination with a spider having cylinders, pistons therein, rollers connected with the pistons, and fixed cams Whose active faces engage said rollers; of a trunnion journaled in said cams and fast in the spider and having ports communicating with its cylinders, a tubular valve outlet ports, nipples on the trunnion, ball-bearings interposed between the nipples and nuts, an inlet and an outlet connected with opposite ends'oi said valve, and means for setting the latter with respect to the position of the cams.

30, In a rotating engine, the combination with a spider having cylinders, pistons therein, rollers connected with the pistons, cams engaging' trunnion fixed through the spider and journaled in the cams, the bore of the trunnion being tapered Where it passes through the spider there provided with ports leading' into said cylinders; of a tubular valve located within the trunnion and having a tapered portion tting the similar portion of the trunnion and provided with in said trunnion, ports, and means for setting the valve with respect to the positions of the cams.

28. In a rotating-engine, the combination with a spider having cylinders, pistons therein, rollers connected with the pistons, and fixed cams whose active faces engage said rollers; fast in the spider and having its cylinders, a tubular valve having inlet and outlet ports ports communicating with within the trunnion and adapted to register with the gear, and means for moving the sector to set the with respect to the position of the cams.

29. In a rotatingengine, the combination with a spider having cy1inders, pistons therein, rollers connected with Whose active faces engage said rollers; of a trunnion journaled in said cams and fast in the spider and having ports communicating with In testimony whereof. I have presence of two subscribing aiilxed my signature in the Witnesses.

FRANKLIN STRATTON.

said rollers, and a tubular'

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