US901813A - Rotary engine. - Google Patents

Description

W. S. MOSES.

ROTARY ENGINE.

APPLIGATION FILED JAN. 28, 190B.

g Patented 0.1.20,190'8.

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ROTARY ENGINE. APPLIOATION FILED 1.15.28, 190e.

901,813. Patented oen. 2o, 1908.

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Patented Oct. 20; 1908.

W. S. MOSES. ROTARY ENGINE.

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W. S. MOSES.

ROTARY ENGINE. APPLICATION FILED unas, 1908.

901,813. n Patented 0@t.2 0,19o8.

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ROTARY ENGINE.

APPLICATION FILED JAN. 2g, 1908.

961,81 8. Patented ont. zo, 1908.

as :a sectional view WILLIAM S. MOSES, OF TRACY, MINNESOTA.

ROTARY ENGINE.

Specification o1' Letters Patent. y Appiicauon filed January 2s, 190s.

To all whom it may concern.'

Be it known that I, WILLIAM S. Moens, a citizen of the United States, residing at Tracy, in the county of Lyon and State of Minnesota, have invented certain new and useful improvements in and l do declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilled in the art l@ to which itl apperta-ins'to make and use the saine.

' This invention relates to improvements in my rotary en ine, described in Patent No. 814,389, issue March 6, 1906; and has for its object to provide an engine of this kind which will ruii'with a minimum of friction and a. maximum of economy, and which may be cheaply manufactured and easily operated. y' .f

Another object is to provide in an engine 'of this kind a simple andeasily operated steam feed and exhaust mechanism whereby the en iiie may bereversed and whereby the cut. o islsor controlled that advantage is taken of the 'expansion Iof-the steam, and .whereby the steam may be' compounded.

Another object is to provide a roller abutnient inl sections provided with means to lioldthe abutment against the walls of the housingsteam channels, whereby the steam is` constrained from passing the abutment.

2 Anotherobject is to. provide such an arrangeinent'f parts, that an engine of this kind may' be manufactured' adapted forspeed, power and simplicity of operation, as

inaybe desired. f fliithe annexed drawing, forming a part of' this' specification,-Figiire 1 is an end view 4of my engine; Fig. 2 is a plan View; 4013 is a longitudinal sectional view; Fig. elvis a section on the line flu- 1 of Fig. 3. fFig. 5 is a view similar to Fig. 4, taken on theline 5--5 of Fig; 2, and showing a' modif'iedjform of the eccentric piston. Fig. 6 is of the abutment; Fig. 7 is a detail view of Fig. 8 is a detail view of the haust valve; and Fig.4 9 is a the cutoff sprocket wheel. 15o'4 As illustrated my engine comprises a base ,1, a cylindrical casing 2 supported thereon,

a' housing 3, abutments e in said casing, eccentric pistons 5 in'said casing, and a steam ,chest 6. ll provide a feed pipe 9 to conduct the steam through the steam chest '6 to the feedv and exdetail view of the rotatable cut-off valve;l

.Rotary Engines;

and

lthis is the case l its inlet port its exhaust which are cut at Patented oca 2o, 190s. Serial No. 412,972.

abutment chamber 7. When great diversity of power and efficiency are desired, the steam chest 6 is provided with the rotatable cut-od valve 8, to be described hereinafter, and as shown in Fig. 4'.

When speed or simplicity of construction operation is desired, the steam chest 6 is left without the valve 8. In the cylindrical casing 2 are one oi nore eccentric pistons 5. Theselmay be of any number desired, and foreach eccentric there is provided feed and exhaust ports,

scribed, and an abutment Il. The eccentric pistons 5 are provided with spaced flanges 11, which are. rotatively mounted on a power shaft 12 extending through the ends of the casing 2 means, not shown, for transmitting power.

AThe peripheries of the flanges 11 closely fit the cylindrical casing 2; ing and the shaft being concentric. flanges are spaced the flanges, the casto` snuglyl receive v therebetween the abutment a, the weight of the abutment and the steam pressure thereon causingA the abutment to lie against the surface of the eccentric and to move up and down in the abutment chamber as the eccen-l tiic pistons rotate.

`By reference to Figs. 4 or noticed that the abutment -1 the eccentric piston and the point most removedl from its shaft is distant from the abutment, thereby forming two iiiclosui'es 12 and 18 bounded by the housing' 3, the abutment, the piston and the cylindrical casing 2. Communicating` withltliese inclosuies are inlet ports 14 and 15, either of which may be opened as by the rotary inlet and exhaust valves 16 and 17 to pass live steam from the 5 it will be lies against chamber 7 into either of the iiiclosures 12 or 13. As shown in Fig. fl, the inlet port 14- is open 'and the inlet port 15 is closed. When the exhaust poi-t 18 is closed and the exhaust port 19 is open, as shown iii Fig'. 5.

The. valves 16 and 17 are provided with segmental inlet openings 2Q, (Fig. 4), and segmental exhaust openings 21, (Fig. 5), an angle to each other and situated on the valves 16 and 17, as clearly shown in Fig. 8, so that when a valve closes port will be open and vice versa.

When the valves are iii' the position shown in Fig. et, the inclosure l2 communicates with The V and provided with a rotatableA .inelosures l2 or li.

valve being held in the the feed pipe 9. and the inelosure 13 com-A iiiunieates with the exhaust. lt will thus be evident that the pressure will be greater in the inelosure 19 than in the inelosiire 13, and the piston will be driven in the direction of the arrow ot Fig. 4.

The valves lti and 17 are provided with handles which may be used for stopping. starting and reversing the engine. The engine may be reversed by closing inlet port- 1-'t and opening the inlet port 15, and may be stopped by elosing both ports.

'.lhe engine -as thus tar deseribed does not provide t'or the expansion ot steam in the 'l`o aeeoiiiplish this. l employ in the steam ehest t the rotatable eut-ott valve H. (Figs. 4 and H). 'l`he valve H is provided with a shatt 24. passing longitudinally therethrough and rigidly held eoaxial therewith b v the supportingpipes 25. whieh torm a .steam-tight jointA with both the shat't aiul the valve.

'l`he outside ot the valve S and the inside the steam ehest is ot eonieal shape` the steam ehest by the spring 26 pressing against the shatt Q4. whereby wear is eonipensated and a steam.- tight lioint between the valve and steam ehest is maintained. 'l`he opposite end ot the shal't l is provided with a sproeket wheel 2T or the like. loosely mounted thereon and eonneeted by t'he ehain or band .S to the wheel 2.) on the shaft l2..

lieyond the wheel "3T on`the shatt' 24 is the lateral projeetioii one ot the pins 31 or 32 in the wheel QT, whereby the eut-ott' valve S is eonstrained to rotate ii. step with the eeeent'rie pistons.

'l`he eut-ott' valve His provided with openings It?, adapted t( a portion ot' the rotation ot' the sinne to register with the passage 34 by whieh the steam ehest ti eommunieates with thealuitment eliamber T. 'lhe eut-ottI `valve H is also provided with openings of thein' so disposed that. one or the other registers and establishes eonimuiiieation with the teed'pipe t) when the openings 33 register withthe openings i-l. 'l`he openings 33, the projeetioii lit), and the pins 3l and i12/are so positioned relative to the pistons 5 that. the passage 3l is opened t'or lonly a part...o1c the revolution ot the pistou :'i. the piage :il being elosed iluring the latter part orfthe revohitiou ofthe p'iston. whereby tliersteain is allowed to expand. thus ell'eetiiig eeonoiny ot steam. 'lhe pins Ill and 32 are sofspaeed apart that eontaet ot the projeetion 3() with one pin plaees ttie valvev t4 in position for proper eut-ott' when the engine is run in one direetion. and eontaet with the other pin plaees said valve in position `for proper eut.- oti' when the engine. is runningin the opposite direetioii. '.llhe wheel 2T is loosely mounted on the shaft 24 so that when the engine is reversed the changing ofthe prolt) adapted to eontaet jection 30 from one pin 31 or 39, to the other is automatic as will be readily understood.

If it is desired to run the engine without. expansion. thev valve S may be turned by' hand until both ot' the passages 33 are open with the passage 34. and then the pins 31 and 3Q removed. 1t will be evident that the aetion then is the saine as if the valve was laeltino'.

lt desired the eceentrie piston 5 may be entirely round for speed, or ity maybe in the forni shown in Fig. in which the transverse eoiineetion thereof is so shaped that a supplementary and auxiliary valve or eutotl` is thereby provided for elosing the open exhaust port 19 or 1S until the open inletl port 14 or 15 is elosed bysaid valve that live steam may not be exhausted as otherwisewould be: and also for restraining the feed supplied through the regular eut-ott valve 8 85 and thereby varying the quantity of steam used. 'l`liis is shown in Fig. 5. th'at. is the eut-ott H is `inst moving ott' the port 34 and as the eeeentrie is moving in the direetion indieated by the arrow in Fig. 4. steam is evidently restrained hy the auxiliary valve,

from entering the iiielosure 12. until the said valve has passed the inlet port 14 whieh i"estraining lesseiis.'. so inueh the regular feed provided by the .valve h' :uid tliei'eby provides l'or greater expansion and eeoiioiny ot steam and provides an engine with varying degrees ot' power. For power` the shape shown in Fig. 4 is desirable, as it provides that the iiielosures 12 and 13 shall be ot' large steam eapaeity. This form may be made. as shown, supplementing the eeeentrie 5 with a 4rseginenta erest :to to eouiplete the piston. as shown.

ln order to insure good eontaet at the ends ot the abutment 4 and to compensate for wear. it desii'able. l may eonstruet the abutment ot two seetioiis. a body section provided witli a redueed end 3'( adapted to be reeeived b v the en'd seeti'on eliaiiiber otthe body and end seetions being the same. .\gainst the eireular eii'd plate of. eaeh seetioii l provide pushers 219 provided with shat'ts 4t). rigidly and eoa.\'ially eoliiieeted thereto and end .\rouiu l said shat'ts is the eoil spring 41, whieh pushes the seetio/ns( outwardly against the einl walls ot the abutment elianiberl and against the tlanges ll. To prevent steam. eseaping between the sections, l provide a bushing riiig412, adapted' to'till the spaee neeessarily lett .between` the seetioiis after the parts are worn` These bushing rings may be replaeed by thielter ones from time` to time.as the abutment and pushers l may ilse steam pressure .to hold the abutment ends. l aeeoinplish'this by putting a small amount ot' water in the abutment, and when the live steam is turned 3S, the outside 110 to end. as shown. 115

I and elianibeif wear'. 12a 4instead ot'ror iii` addition to the spring 4l into Ttheengi-ne the 'wateriin :the abutment is changed into steain,'which tends yto force a art lthe sections of the abutment; `Instead 'o this means the natural `expansion of n heated air in the abutment may be taken ad vantage of, or .the combi-nation of the air and the spring may be used.

In Fig. l the various attachments of thesprocket Wheel 27 are shown as arranged for regular feeding steam, with thel eccentric Shown in Fig. 4 and when the eccentnic and cutoff Valve are in the position sliown in said ligure. But when the cutoff valve 8 is vprovided for the eccentric shown in Fig. 5

the'lug pins 3l and 32 are placed' as shown in Fig. 9, ltpr short steam feed and long expansion. It will be noted that there are two openings 3l and 32 flor the lug pins; opening 31 for pin 3l and opening 32 for pin 32. lVhen the regular feed is required the pins are placed in these openings.

lt is thought that the operation and advantages of my invention will be imderstood without further described minute details. I do not limit myself to them as the details and arr'angeiiient of parts may be greatly varied without depart-ing from the spirit and scope of the invention.

l I claim as my invention l. ln coi'nbination, a cylindrical casing, an eccentric rotatively mounted therein, an abutment mounted to bear againstsaid eccentric, and inlet and exhaustports for said casing on opposite sides of said abutment, the length of said abutment being yieldably adjustable. e

2.; In combination, a cylindrical casing, an eccentric rotatably mounted therein, an abutment chamber, a cylindrical abutment in said chamber and bearing against said eccentric and ,dividing the casing into two inclosures, means to yieldably extend the length of said abutment, exhaust and inlet ports to said inclosures communicating with said chamber, a feed pipe, anda rotatable cutoti' valve between lsaid feed pipe andsaid chamber and connection between said valve and said eccentric, whereby said valve is constrained to rotate in step with said eccentric.

3. ln combination, a casing, an eccentric `ha ving end fianges and rotatably mounted in said casing, an abutment chamber, an abutment therein and ,bearing against the ends thereof, against said end flanges and said eceentrics, whereby said casing is dividedl into two inclosures, exhaust and inlet ports for said inclosnres, said abutment being dil vided into a body and an end section, said sections being adapted to contactthe ends of said chamber to contact said end llanges, and means to yieldably force said sections apart.

4. ln a rotary en fine, a cylindrical casing, an eccentric rotata ly mounted therein, an abutment chamberv comimmicating with said cylindrical casing, an abutment movable -in said chamber and bearing against said eccentric fto divide the cylii'id'ricalcasing into two inclosures, inlet and exhaust ports com municating with said inclosu'res, rotatable valves for said ports, means adapted to rotate said valves, the valves of each of saiinclosures being constrained to move together, whereby when one port is closed the other will be open,l a tapering steam chest communicating with said chamberfa feed pipe communicating with said steam chest, a cylindrical tapering rotary cut-off valve mounted in said steam chest, means to yield ably press said cut-off valve longitudinally in one direction, openings'in said rotary valve adapted to register with said feed pipe and the openings to said chamber through ay portion of the revolution of said cutfoft' valve, and means adapted to rotate said cutoff valve in step with said eccentric, the openings of said cut-off valve being so positioned that steam pressure is admitted into said chamber throughout only a portion of the rotation of said eccentric.

In combination, a cylindrical casing, a piston rotatable therein, means to bear against said piston to divide it into twoinclosures. inlet and exhaust ports communieating with said inclosures, a feed pipe, a tapering cylindrical steam chestcommunieating with said feed pipe and said inletl ports, a tapering cylindrical cut-olf valve ro tatably mounted in said steam chest, means to yieldably hold said cut-off valve against movement in one direction, openings in said valve adapted to register with said feed pipe and said inlet ports, and means adapted to rotate said valve.

(3.' ln in rotary engine, a rotary cut-ofi1 valve, openings in said valve adapted to establisheonununication at the saine. time with the feed pipe and the cylinder of said engine, a shaft projecting from the end of said cut-oil' valve, a wheel loosely mounted on said shaft,.spuced stops on said wheel, a projection on said shaft lying between said stops, and means to rotate said wheel.

7. In combination, a cylindrical casing, a cylindrical eccentric rotatably mounted tin-rein, an abutment chamber.` a cylindrical abutment in 'said chamber and bearing against said eccentric and dividing the casing into two inclosurcs. means to yi'cldably extend the length of said abutment., exhaust and inlet ports to said inclosures coininuuieating with said-cliainher, supplementai'y means for controlling the flow of live steam to said inclosuresI by closing and openingv said exhaust and feed ports in course, a steam chest or feed pipe cominunicating' with said chamber.

H. ln eomliination. a cvlindrieal casing, a` cyliiulrieal eccentric piston' mounted therein, an abutment chamber, a. cylindrical abutment in said chamber bearing against said eccentric and thereby dividing` the casing into two inclosures, means t0 yieldubly exl tend the lengthv of said abutment, exhaust and inlet ports leading to said inelosures.

the inlet ports Communicating with Said chambers, a, supplemental and auxiliary cutoff or Valve, controlling, regulating and restraining the steam feed, through the said In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

`VILLANI S. MOSES.

XV i tnesses J. A. RICKERT, H. E. ANSELME.

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