US720952A - Rotary engine. - Google Patents

Description

No. 720,952.' PATENTBD PEB. 17, 190s.

gi. NIBLSEN. ROTARY ENGINE.

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No. 720,952. f PATENTBDPBB. 17, l909.

H. NIELSBN.

. RQTARY ENGINE. Y

A'PLIGATION FILED JUNE 30, 1902. A

No MODEL. 2 SHEETS-SHEET 9.

1 By m4@ y V ATTORNEYS.

`Nieren STATES PATENT rri'ci.

HERMAN NIELSEN, OF BROOKLYN, NEWY YORK.

ROTARY ENGINE.'

SPECIFICATION forming part' 0f Letters Patent NO. 720,952, dated February 17, 1903. Application filed June 30,1902. Serial No. 113,795. (No model.)

Engine, of which the followingis a full, clear,`

and exact description. y

The object of the invention is to provide av new and improved rotary engine which is sin;d ple and durable in construction, very effective in operation, and arranged to utilize the motive agent to the fullest advantagato per-'f mit convenient reversing, and to allow of cuting oft the steam at any desired point ot' the piston-stroke to use the steam expansively.

The invention consists of novel features and parts and combinations of the same, as Will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings,

-\haust-port.

forming a part of this specitication, in which similar characters of reference indicate corresponding' parts in all the views.

Figure l is a longitudinal sectional elevation of the improvement on the line l l of Fig. 3. Fig. 2 is a transverse section of the same on the line 2 2 of Fig. 3. Fig. 3 is a plan view of the same.V Fig. 4 is an enlarged end elevation of the AVstopping, starting, reversing, and cutoff lever. Fig. 5 is an eularged inverted plan view of the steam-valve,

showing the ladmission-port5'and Fig isay plan view of the steam-valve, showing the ex- The improved rotary engine is mounted a suitably-constructed frame A, having ballbearings B, having a cylindrical casing 0,'in which is mounted to rotate a Wheel D, having its hub D' provided with a plurality of radially-disposed cylinders D2, D3, D, and D5, as plainly illustrated in Fig. 2. The Wheel D is arranged eccentrically in the casing C, and in the several cylinders D2, D3, D4, and D5 are mounted to reciprocate the pistons E E E2 E3, having their outer ends rounded off and in frictional contact with the inner surface of the rim of the cylindrical casing C, as plainly indicated in the drawings. The hub D' of the Wheel D is secured on an annular bearing F', formed on a hollow shaft F, jour- Oilnaled on ballbearings B', carried by the main frame A, eccentric to the ball-bearings B, as shown in Fig. l. One outer'end of the shaft F isthe inlet for the motiveagent and the other the outlet for the exhaust, andthe said inletend of the shaft F tits into a head G, connected by a pipe H with a boiler or other source of motive-agent supply. The other end of the shaft F connects With a head l, having an exhaust-pipe J for conducting the exhaust motive agent to the outside.

:Within the hollow shaft F is arranged a valve'K, formed with a transverse partition K', dividing the interior of the valve K into the inlet-compartment K2 and the outlet-compartment K3, the said inlet-compartment K2 being in communication with the inlet end of the shaft F and the outlet-compartment K3 being in communication with the exhaust end of the shaft F. The inlet-compartment K2 is provided With a port b, adapted to register with ports a, formed in the shaft F and the hub D and leading into the cylinders E, E', E2, and E3, as plainly shown in Fig. 2, the said ports o, being also adapted to register with an exhaust-port c, likewise formed in the valve K, but leading into the outlet-chamber K5.Y Oneend of the valve K is provided with avalve-stem K8, extending through a suitable stuffing-box in the head G, and outside thereof on the outer end of this stem K8 is secured a lever K4, having a horizontal eX- tension K5, reaching under the segmental iiange Gv2 on the head G. (See Figs. l and 4.) The entensionK5 is provided with stop-collars K6 K7 to limit the longitudinal sliding Vmovement of the extension Kv5 necessary to bring the valve K in the desired cut-oft position, as hereinafter more fully described.

By reference to Fig. 5 it will be seen that the admission-port l) in the valve K is made in triangular shape, 'so that when the lever K4 is in an innermost position and the collar K6 abuts on the flange G2, as shown in Fig. l, then the base end of the said admission-port h is in register with one of the ports o., and consequently a large amount of steam can pass at a given time through the said ports b and a into the corresponding cylinder. By moving the lever K4 outwardly the valve K is moved in alike direction, and the base end of the admission-port h moves out of register IOO with a port a to cut off the steam from the corresponding cylinder. The exhaust-port c in the valve K is rectangular, as plainly indicated in Fig. 6, so that a full exhaust is had at all times from the cylinders at the time they move into an uppermost position and the ports ct register with the said port c.

The heads G and I are held stationary and are supported by suitable rods G and I', respectively, from the frame A.

The operation is as follows: When the several parts are in the position illustrated in the drawings, then the motive agent entering the shaft F by way of the pipe I-I and head G passes into the compartment K2 and from the latter through the port b into the port ct of the cylinder D4, then in a vlowermost position-that is, the cylinder nearest the rim of the casing C. Now the steam passing into this cylinder D4 at the inner end thereof presses against the piston E2, so that the latter presses against the rim of the casing C, and as the latter and the wheel D are mounted eccentrically one to the other it is evident that the force of the piston E2 on the rim of the casing C causes the latter to rotate and with it the wheel D. From the foregoing it will be seen that the wheel D and the casing C rotate together and in the same direction by the action of the piston on the rim of the casing C. Now as the Wheel D rotates the port ct of the cylinder D4 nally moves out of register with the port b, so that the motive agent is cut off from this cylinder and the steam contained therein acts expansively to continue therotary motion of both the wheel D and the casing C. At about the time the port a of the cylinder D4 is cut off from the port b the port a of the next following cylinder moves in register with the port b, so that live motive agent now passes into this next cylinder to again apply an impulse to the casing C and the wheel D in the manner above described relative to the cylinder D4 and its piston E2. The rotary motion of the wheel D finally brings the port Ct of the first cylinder D4 in register with the port c, so that the steam can now escape from the cylinder D4, by way of its port a, port c, and chamber K3, into the exhaust end of the shaft F to the head I and exhaust-pipe .I to the outside. This Jfakes place at the time the piston E2 moves into an uppermost position. It will be evident that by the operator turning the lever K4 the valve K can be turned in the shaft F to bring the port b to one or the other side of the vertical plane extending through the axis of the shaft, so that the live steam can be conducted into the next adjacent cylinder to insure rotation of the casing C and wheel D in either direction. In order to limit the turning movement of the shaft K4 for the purpose mentioned, I provide the ange G2 with stops G2 G4, adapted to be engaged by the extension K5, previously referred to and shown in Fig. 4. The extension K5 between the collars K6 K7 is of such length relative to 'extending through the hub and shaft to the the length of the admission-port b that when the lever K4 is pulled out until the collar K7 abuts against the flange G2, then the apex end of the port bis completely out of register with the port a of the cylinder then moving into working position. The motive agent is thus shut on? from the ports a and the engine comes to a standstill. When the lever K4 is in the position shown in full lines in Fig. 4, then the casing C and wheel D rotate in the direction of the arrow a', and when the lever K4 is swung to the position shown in dotted lines in the said Fig. 4:, then the casing C and the wheel D rotate in the inverse direction of the said arrow a.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A rotary engine comprising a cylindrical casing mounted to turn, a wheel within said casing and having a hollow shaft mounted to turn eccentrically relative to the said casing, the said wheel having a plurality of cylinders disposed radially from the hub of the wheel, the inner ends of the cylinders having ports extending through the hub and shaft to the inside of the latter, pistons in the said cylinders, acting on the rim of the cylinder-casing, and a valve mounted to slide and turn in the said hollow shaft, having compartments for connecting with the said ports leading to the cylinders, one of the compartments being connected with the Amotive-agent supply and the los other with the exhaust, the admission-port in the said valve being triangular, as set forth.

2. A rotary engine comprising a cylindrical casing mounted to turn, a wheel within said casing and having a hollow shaft mounted to 105 turn eccentrically relative to the said casing, the said wheel having a plurality of cylinders disposed radially from the hub of the wheel, the inner ends of the cylinders having ports extending through the hub and shaft to the 11o inside of the latter, pistons in the said cylinders, acting on the rim of the cylinder-casing,

a valve mounted to slide and turn in the said hollow shaft, having compartments for connecting with the said ports leading to the 115 cylinders, one of the compartments being connected with the motive-agent supply and the other with the exhaust, and a head on one end of the said hollow shaft, connected withthe motive-agent supply, the said end of the shaft opening into the said admission-compartment of the said valve, as set forth.

3. A rotary engine comprising a cylindrical casing mounted to turn, a wheel within said casing, havin gahollow shaft mounted to turn eccentrically relative to the said casing, the said wheel having a plurality of cylinders disposed radially from the hub of the wheel, the inner ends of the cylinders having ports 13o inside of the latter, pistons in the said cylinders, acting on the rim of the cylinder-casing, a valve mounted to slide and turn in the said hollow shaft, said valve having compartments for connecting with the said ports leading to the cylinders, one of the compartments being connected with the motive-agent supply and the other with the exhaust, and manually-controlled means for sliding and turning said valve in the shaft, for cutting off the motive agent sooner or later, and for reversing the engine, as set forth.

ai. A rotary engine comprising a cylindrical casing mounted to turn, a wheel mounted to turn eccentrically within the casing and having a plurality of cylinders disposed radially from the hub of the Wheel, a hollow shaft carrying the said wheel and having ports connecting with ports in the inner ends of the cylinders, pistons mounted to slide within the said cylinders and in contact at their outer ends with the inner surface of the cylinder-casing, and a valve mounted to turn and to slide in the said hollow shaft to reverse the engine and to start and stop the same, the valve having an admission-compartment and an exhaust-compartment, provided with ports for connection with the shaft and cylinder-ports, as set forth.

5. A rotary engine comprisinga cylindrical casing mounted to turn, a Wheel mounted to turn eccentrically Within the casing and having a plurality of cylinders disposed radially from the hub of the wheel, a hollow shaft carrying the said wheel and having ports connecting with the ports in the inner ends of the cylinders, pistons mounted to slide within the said cylinders and in contact at their outer ends with the inner surface of the cylinder-casing, and a valve mounted to turn and to slide in the said hollovT shaft, the valve having an admission-compartment and an exhaust-compartmenprovided with ports for connection with the shaft and cylinderports, the admission-port in the said valve being triangular in shape, as set forth.

6. In a rotary engine, the combination with a cylindrical casing mounted to turn, awheel mounted to turn eccentrically in the casing and having a plurality of radially-disposed cylinders, pistons in the cylinders and engaging the casing, and a hollow shaft carrying the wheel and having ports connecting with the ports of the cylinders, of a compartmentvalve mounted to slide and turn in the shaft, each compartment of the valve being provided with a port, means connected with the valve for turning and sliding the same, means for limiting the sliding movement of the valve, and means for limiting the turning movement of said valve, as set forth.

7. In a rotary engine, the combination with a revoluble casing, a plurality of revoluble cylinders eccentrically mounted in the casing, pistons in the cylinders and engaging the casing, and a hollow shaft upon which the wheels are mounted, of a compartment-valve mounted to slide in the shaft, each compartment being provided with a port, one-of the ports being triangular, and means for sliding said valve, as set forth.

8. In a rotary engine, the combination with a revoluble casing, a plurality of revoluble cylinders eccentrically mounted in the casing, pistons in the cylinders and engaging the casing, and a hollow shaft carrying the cylinders, of a compartment-valve mounted to slide in the shaft, each compartment being provided with a port, a handle connected with.

the valveand provided with a horizontal extension having spaced stops, and a projection with which .the stops of the extension are adapted to alternately engage, as set forth.

9. In a rotary engine, the combination with a revoluble casing, a plurality of movable cylinders eccentrically mounted in the casing, pistons in the cylinders and engaging the casing, and a hollow shaft carrying the cylinders and provided with ports, of a hollow valve mounted to slide and turn in the shaft and provided with compartments, each compartment of the valve being provided with a port, a handle connected with the valve and provided with a horizontal extension having spaced stops, and a flange at one end of the shaft and with which the said stops are adapted to alternately engage, lsaid flange being provided with oppositely projecting stops with which the extension of the handle is adapted to engage, as set forth.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing Witnesses.

HERMAN NIELSEN.

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