US907843A - Rotary engine. - Google Patents

Description

A. E. MILLER. ROTARY ENGINE. APILIQATION FILED MAY8,1908.

Patented Dec. 29, 1908.

and

A. E. MILLER. ROTARY ENGINE. APPLICATION FILED MAY8,1908.

9 7;'343, Patented Dec,,29,1908.

2 SHEETS-SHEET 2.

PATENT OFFICE.

usrnv E. MILLER, or RURAL RETREAT, VIRGINIA.

noramr ENGINE.

v v No. 907,843.

Specification of Letters Patent.

Patented Dec. 29,1908.

Application filed. May 8, 1908. Serial No. 431,6d0.

Torall whom it may concern:

' Be it'known that I, AUSTIN E. M LLER, a citizen of the United States, residing at Rural Retreat, in the county of Wythe and State of -Virginia,, have invented a new. and useful Rotary Engine, of which the following 1s 8f P 01fiCat10n. a

This invention relates "to. rotary engines with special rreferenge to rotary engines ofth'e compound type. 1 v

' The invention further relates to combined rotary engines and turbines. --One ob eot of the invention isto'provide an improved general construction of a rotary .englne.

Another object of thejinvention is to provide a sliding piston of. improved 1 form actuated by the steam-pressure.

A still further object or the invention a to provide an improved 'form "of combined rotary engine and turbinejin' which the exhaust fluid pressure from the rotary engine will be utilized to actuate the turbine;

The invention consists in general 'of a rotary engine mounted in (SOIHIBGUOH with a turbine, sald rotary engine being provided 'with exhaust ports and passages leading to the nozzle of a turbine mounted upon the same shaft. ,The invention further consists in such novel details of arrangement, and combination of arts hereinaftenfully described, illustrated in the accompanying drawings, andspecifically setforth in the claims.

In the accompanying drawings like char acters at reference indicate like parts in several views. g

Figure '1 is a sideelevation. of an engine constructed in accordance'with this invention. Fig. an end elevation thereof. Fig. 3 isa vertical section of the invention showing the valve and sliding. piston I arrangenient in the rotary engine. F1g. 4 is a transversesectionv part1 in elevat on showing the arrangement of rotary'eng' ne and turbine Fig. '5 is a partial sect onal view through the turbine showing. the nozzle,

blades, and exhaust.

The numeral ,10 indicates a cylindrical casing in which the rotary parts are heldto move. Uponeither side. of the casing 10 are heads 11 provided with aperturedlugsl? and downwardly extending portions 13 being-arranged to form a base or frame [or said engine.

Within the apertured lugs 12 are held lar form arranged to contact with the cylindrioal casing 10' and thus prevent thefesca e of steam from oneport to the other." The central portion of the rotorfwhich lies within the turbine is in the formof a solid web and is keyed securely to the shaft 15 asbest seen in-Fig. 5. The portionsl? of the rotor are centrally. recessed as shown in Fig. 3 and eachof said portions is provided with steam passages 19 having enlarged shouldered porionsf20. It is preferred that the steam passagps in one of the portions 17 shall lie at 5 other ortions 17 as indicated by the dotted and in lines in Fig. 3. Rigidly attached to each of the plates forming the heads 11 is a boss 21 which extends within the recess in the center of the portion 17. The boss 21 is provided with arms 22- arranged to contact withthe side walls of said recess. By the peculiar arrangement of the lugs 22the centralrecesses are each divided into four parts two of which form steam passages 23' and the other two exhaust passages 24.

Between the casing 10 and the rotor 1por-v tions 17 are formed annular spaces 25 w ich are broken by fixed abutments 26 referably disposed opposite each other an provided with an' inc med face 27. Hold within and closely fitting the passages 19 and 20 are pistons 28' having shouldered ortions 29 wthich lie within the portion 20 o the recess. The shouldered portions 29 are-of less length then the portion '20 of the recess and it is therefore possible for the piston to slide in and'out, the motion being limited .;by the coaction of the shoulderedportion 29 and enlarged" ortion 20 ofthe recess.- The piston 28 is he low as indicated at 30 and is provided t angles to the steam passages in thewith an opening 31 arranged to permit the passage of steam through t is slidably mounted a valve 34. Openi g episton and into". the annular recess 25. Fixedly mountedwhile the exhaust steam ahead of the piston away to any suitable point.

I into the recess 23 is a steam port 35 which is supplied with steam by means of a pipe 36.

40 formed on the exterior of said casing.

'1 his passage 40 is so positioned as to conduct the steam passing thereto to a nozzle 41 lying adjacent the path of the-turbine blades 42. Exhaust ports 43 are also formed inthe casing one of said ports being rearwardly disposed with reference to each of the nozzles 41. The exhaust ports 43 communicate with exhaust pipes 44 which may-connect with the exhaust pipes-38 or be separate as desired. p

In the operation of the device steam is admitted to the steam pipes 86 ports 35 and passage 23. From the passage 23 the steam passes through the recess 19 and the hollow pistons, the valve '34 being forced open by pressure of the steam. "lhe steam then passes out of the opening 31 and causes the rotor to move. It is to be observed that while the steam is passing through the hollow piston a certain amount of pressure will continue to be exerted against the valve 34 and the piston will thus be forced outward againstthe casing 10. The continuance of the revolution brings the passage 19 opposite one of the lugs22 and then opposite the exhaust passage 24. -When the piston arrives at this point steam is exhausted through the ports 37 and pipes 38. The valves 34 will then close, and, the pressure having been removed the pistons 28 will no longer be forced out against the casing 10 but will be readily forced back by the inclined face 27 of the abutment 26. As soon, however, as the piston passes the stationary abutment, the steam will again open the valve 34 and forces the piston out again the casing 10. M h

has been forced outward through the steam ports 39 and passage 4-0 and'into the nozzle 41 Where it serves to actuate the turbine element. This steam after acting upon the turbine element is exhausted through the port 43 and pipe 44.

It is obvious that on some forms of the engine one of the pistons 28 with the corresponding parts may be omitted and also that i on larger engines, where desirable, the numsenses ber of pistons, 28 and corresponding parts may be increased without affecting the scope .of the invention.

Having thus described the invention what is claimed as new is 1. In an engine of the class described, a rotor comprising a central turbine member anda pair of laterally disposed piston actuated members rigidly connected thereto, and a casing having inlet ports to admit steam to the piston actuated members of the rotor, exhaust ports leading rrom said members, nozzles to admit steam to said turbines, steam passages connected with the exhaust ports and nozzles, and other exhaust ports leading from said turbines.

2. In an engine of the class described, a rotor having a central recess and a passage therefrom to the periphery of said rotor, a hollow piston held to slide in said passage, a perforated disk in said piston, a boss held in said recess to form steam and exhaust pr sages, a casing carrying said boss provided with inlet ports opening into said steam passages, exhaust ports from said exhaust passages and other peripheral exhaust ports, and a stationary abutment.

3. In an engine of the class described, a rotor having a central. recess and a passage therefrom to the periphery of said rotor, a hollow piston held to slide in said passage, a perforated disk in said piston, valves in said pistons, a boss held in said recess to form steam and exhaust passages, a casing carrying said boss provided with inlet ports opening into said steam passages, exhaust ports from said. exhaust passages and other peripheral exhaust ports, and a stationary abutment.

4. In an engine of the class described, a rotor having a central recess and a passage therefromto the periphery of said rotor, a hollow piston held to slidein said passage, a perforated disk in said piston, a pin mounted on said disk, a valve slidably mounted on ,said pin, a boss held in said recess to form steam and exhaust passages, a casing carryinto said steam passages, exhaust ports from said exhaust passages and other peripheral exhaust ports, and a stationary abutment.

In testimony that I claim the foregoing as my own, I.have hereto aflixed my signature in the presence of two witnesses.

AUSTIN E. KILLER. Witnesses:

J. B. Snxnrrz, C. M. DAYIS.

ing said boss provided with'ports opening

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