US900410A - Rotary engine. - Google Patents

Description

I W. s. MI NOR.

, ROTARY ENGINE.

APPLICATION FILED APR. 9, 1908. I 900,410. Patented Oct. 6, 1908.

a sums-sum 1.

W. S. MINOR.

ROTARY ENGINE.

APPLICATION IILED'APR. 9, 1908.

900,410. Patented 0015.6,1908.

- 3 sums-dun 2.

i A a r- H1 I I JM R,

W. S; MINOR.

ROTARY ENGINE. urmoumn IILEI) APB. 9, 190a.

Patented Oct. 6, 1908.

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UNITED STATES "I gENT OFFICE...

WALTER S. MINOR, OF CUNNINGHAM, TENNESSEE.

Berni: 121mm;

To all whom it mag concern.-

Be it known that' I, WALTER S; MINOR, a

citizen of the. United States, residing at Cunningham, in the county of Montgomery and State of Tennessee, have invented certain new and useful- Improvements in R- tary Engines, ofywhich the following is a specificatiop, reference being bad to the accompanying drawings, o My invent on relates to improvements in rotary engines for steam or other fluid under pressure, and it consists of the novel features of construction and the combination and arrangzment of parts hereinafter fully descri d and claimed.

The object of the invention is to provide an engine of this character which will be sim le and practical in construction, strongi an durable in use, andhighly cflicient in operation. y A further'obfiect of the invention is to provide improved packing devices for the piston blades and other parts of an engine of this character. 1

The above and other objects of the in-vention, as will hereinafter more fully appear, are attained in its preferred (embodiment illustrated in the accompanying drawings, in which Figure 1 is a vertical transverse or cross section through my improved rotary'engine; Fig. 2 is a lon 'tudinal section taken on. the. I lanegindica by the line 22 in. Fig. 1;

ig. is ,a horizontal section taken on the lane indicated bythe line 33 in Fig. 1; ig. 4 is a side elevation ofthe inner face of one of the epd plates or heads of the cylinder; Fig. 5 is an elevation of the inner side or face of one of the end lates of the piston; Fig. dis a detail view 0 .one of the packing rings for the end of the piston; Fig. 7 is a detail view of one of the blades of the pieton; Fig. 8 is a detail perspective view of the jointed angular packin strips for oils of the piston lades; and ig. 9 1s adetail section through the packing ring.

' My improved rotary steam engine comv prises a casing or cylinder 1 formed with a suitable baseand open ends adapted to be closed by similar end plates or heads 2 which may be suitably secured. I prefer- -ably, however, e the innerface of each of the heads ad acent to their outer edges so as to receive the ends of the cylinder and secure them to the latter by boltsv or similar s ecification, Letters Patent. i am ma Aprim, 1908. Serial No. 426,115;

Patented Oct. o, 1.608.-

removable fastenin s 3, as shown more clearly in Fig; 2; ormcd within the bore of the cylinder and extendiiig longitudinally thereof at any suitable point, but preferably at its top, as shown in-Fig. 1, is'a rib or projection 4 which serves as an abutment and which is provided with one or more packing strips-5 to engage the periphery of :ucylindrical rotary piston 6 w ichv is included concentrically on a longitudinal shaftl'l, the 1-.

ends of which project through" and are mounted for rotation in bearii rgs forn'ie'd at the centers of the heads 2 and )I'OVldtlWltll. suitable stull'ing boxes or glan s 8 Steam inlet and exhaust passages 9, 10, respectively, are provided in the cylinder on opposite sides of the abutment 4;;1nd cornmunicate with the annular steam passage or space 11 formed between the piston ani'l, cylinder and ada )ted to be separated at intervals to break t e communication between the inlet and exhaust passages, by piston blades or valves 12. The portion of the bore of tlia' cylinder 1 adjacent-'to the exhaust port or passage 10 is sli htly enlarged by cutting away a portion 0 the inner wall of the cylinder, as shown at 13, thereby facilitating the outlet of steam, as )resentl y explained. .The piston 6 is pre erably in tho-form of a solid cylindrical body bored conce 'itrically to receive the shaft 7 which is keyed or otherwise secured therein and formed n its periphery a't diametrically opposite points are longitudinal grooves or channels ltto receive the piston blades 12. The latter are in the form of flat, rectangular plates of such size as to slide freely in the grooves or recesses-14 and to drop entirely within the same to permit them to pass under the cylin dcr abutment 4. Said recesses 14 are shaped as clearly shown in Fig. 3 and in their bottoms are smaller recesses 14 to receive extensions 12 formed at the ends of the rear edge of the valve blades or plates 12. \Vhile said blades may be projected and'rctracted by airy suitable means 1 preferably employ the one illustrated which consists in provi ing at the ends of said blades outwardly rojecting ins or extensions 15 adaptw travel through grooves or chmmels 16 formed in the inner faces of the cylindcr heads 2. As illustrated in Fig-u 4, 'each of the ooves 16 has a little more than half of it disposed concentrically with res 'icctto' 'the piston so that when the pins pass through its no v

j this portion of the rooves the bladeswill he held projected ant against the inner Wall or bore of thecylinder -1; and the remaining portion 17 of each of said grooves is eccen- --trical-l'y disposed to provide acam portion \vliichserves to move the pins 15' inwardly and outwardly witl' respect to the center of as piston and thereby retractthe blades .12

' as they approach the abutment 1: and pass under it and then project said. plates as they leave it. The blades 12 are retained in the grooves in the piston by-twoend plates-1'8 which are suitably secured and formed with oppositely disposed radially, extending slots pins formed iutegral with the blades to receive the 15, which latter are if-5 atp'oint; adjacent to their inner corners.

'- lt will he noted that the extensions 12 on the blades 12 will cover the slots 18 and prems the passage of steam through said slots. The packing. strips for the abutment 4 are in the form of metal plates arranged for radial sl iding movement f' groo ves 20 formed in the 'a hutments, said plates being grooves by transverse pins 21 said abutment and through or openings 22 formed in said '.lhe.latter are projected and held firmly against the periphery of the piston by leaf springs 23 which} are V-shaped and arranged as. clearly shown in Fig. 2.

For the purpose of of steam around the b 35 outer portions of each or 'channelsg24i to receive angular packing strips 25. Said groove 24. is formed longitudlnally in the outer ed e and also in the outer porti ns of the em and each of the right angular packing strips 25 is adapted to fit in-one-end of the groove 24 and to slide both radially and laterally withrespect to' the piston so that the long portion 'or-arm 26 of each of the strips will enga ethe inner Wallofthe cylinder 1 and retained in the passed through elongated slots ades '12'I provide t is thes ortportion or arm 27 of the same will,

engage one of the end plates 2. of the cylinder. The long arms 26 of the two packing strips on. each valve have their inner ends 59 recessed to-- overlap .and

by a transverse I in .28 passed through and fixed in one of said ends Tand adapted to ,proin a slot-29 inthe'other of' own-more clearly 'in- Fig. 8." The strips 25 are retained in the groove 24 ject'into and slide said ends, -assh .55 I

by transverse blade and'into ings 31 in said stri ated outwardly by arranged in the grooves 26, 27 of said strips, as cl or the of steam around the ends o e iston' I preterably fem i i-the inner faces 6 enlarged or elongate o'pen-.

s. Thelatter are beneath the arms 1y illustrated in 'rically opposite points.

packing strips.-

reventing the'leaka e of them with groovesv s of the blade 12 are loosely united.

pins 30 passed throtagh the actushaped leaf springs 32,

purpose of preventingl the escape plates 18 annular grooves to receive spin packing rings 34. Two of said rings are preferablyprovided at each end of the piston and they are split diagonally at. one point so that-their ends overlap; and the two rin at each end of the piston are arranged so that their split portions are disposed at diamet- Said rings are retained in position but at the same time per mitted to have radial movement, by means of inwardly projecting pins 35'fo1ined upon them and extending into recesses 36 f med in the end plates 18 and adapted 'to receive coil springs??? which latter surround. said pins and sci-veto project the rings and press them against the outer wall of circular depressions 37 formed in the inner faces of the cylinder heads 2, as clearly shown in the drawings. I

38 denotes oil passages formed in the cylinder heads and 39 denotes a waste passage for the outlet of oil and water of condensation from each of the recessesor depressions 37. If desired, suitable oil cups may be provided at the outer ends of the passages 38,

The operation is as follows. Assuming the parts to be in the posit-ion shown in Fig. l and steam to be admitted into the inlet. 9, it will be seen that both the pressure and expansion of the steam thus admitted will be against the blade 12 on the right hand side It will thus be seen that one of the blades is always projeeted'and serves to divide the annular steam space pactof the steann As the blades are re- .tracted the steam escapes around them and through the enlarged portion 13 of the steam space and from thence through the exhaust lO. The invention is entirely automatic in its operation-arid will be steady d powerful and free iron; vibration.- Furthermore, itiis exceedin 1y simple inconstruction and composedv o durable. E

WhileI have shown'and describedin de,

tail the preferredembodiment of my inven ,tion I 'wish it understood thatI do not wish few parts which are strong and Hand receive the imto be limited to the preciseconstruction set forth and that various chan proportion and sorted to without departingfrom. the s irit or sacrificing any of the advan'ta invention. also wish it distinc stood that-I may substitute other. forms packing devices for the ones herein set forth, and rovide he valve guide pins with ball -'-the end-i or r0 er bearings.

ge s in the form,.' minor details .may. .be re-' [0 y under" abutment and inlet and in et and exhaust Having thus described my invention what I claim is:

away portion, said abutment being .fo I ed with a longitudinal slot, a sprin a said sl cylin er packing-strap arranged in eads covering the open ends of the cylinder and formed in their inner faces with circular depressions, the latter being formed in their bottoms with grooves having concentric and cam or eccentric portions, a shaft arranged concentrically in the cylinder and having its ends journaled in said heads, a cylindrical piston fixed. concentrically on said shaft and formed at opposite points in its periphery with' radial grooves, end plates removably secured to the ends of the piston and arranged to project into the circular depressions in the cylinder heads, said end plates being formed with radial slots to aline with the ends of the grooves in the piston and having their inner edges formed with annular grooves, annular spring pressed packing strips arranged in the last mentioned annular grooves at the ends of the piston and adapted to engage the side walls of the circular depressions in the cylinder heads, piston blades arranged for radial sliding movement in the grooves in the piston and formed at their ends with pins to project through the slots in said end plates an into the'grooves in the bottoms of the circular depressions in the cylinder heads, the outer ends of said blades'being formed with grooves, and angular spring presset packing stri s arranged in the grooves in the piston b ades to bear against the inner wall of themylinder and the adjacent portions of the inner faces of the cylinder heads, substantially as shown and described.

2. In a rotary engine, the combination of a cylinder haviiu open ends, a longitudinal and exhaust ports on'opposite sides of the'abutment, cylinder heads closing the open ends of the cylinder and being formed with concentrically arranged circular depressions, the latter having in their bottoms grooves provided with concentric and eccentric or cam p tions, a concentric shaft journaled in the cylinder heads, a concentric piston fixed on said shaft and formed in its periphery with the radial grooves 14 and with the recesses 14' at the ends of the bottom portions of the recesses 14, entl plates secured upon the ends of the piston and. formed with the radial slotsl8 the grooves 14 in the piston,

to register with slidably mounted piston blades arran ed in the grooves of the piston and forme with extensions 12 to cover the slots in said end platesand to reject into said recesses 14 whenthe bla es are in retracted position, and pins carried by the ends of the blades and projecting through plates of the iston and into the roovesjn the bottoms o the circular depressions in the.

cylinder heads.

3. In a rotary engine, the combination of a cylinder having open ends, cylinder heads upon the same and formed with concentric circular depressions, a concentric rotary piston, concentric end plates upon the latter and formed in their inner edges with the annular rooves having the sockets 36 arranged at intervals in their bottoms. and the split packing rings 34 arranged in the grooves 33 between the end plates of the piston and the ends of the. latter and formed with the inwardly projecting radial pins to enter the sockets 36, and the coil springs 37 arranged upon the pins 35 for expanding the rings and holding them in contact with the side walls of the circular depressions in the cylinder heads.

-i. In a rotary engine, the combination of a cylinder, a piston therein formed with radial recesses, piston blades in said recesses and formed in their outer edges and the adjacent portions of their ends with the grooves 2-1, said blades being also formedwith the transverse openings 30- intersecting said grooves, the right angular packing strips 25 arranged in the grooves 2- and having short arms to project beyond the ends of the blades and 1011 r arms to project beyond the outer longitu inal edges of the blades, said long arms being formed with the elongated openings or slots 31 to re ister with the openings 30 in the blades, sai long arms of'the packing strips having their ends recessed and overla ping, the recessed end of one being form, with the slot- 29 and the reccssedend of the other carrying the'pin 38 to enter the slot 29, transverse pins passed through the openings 30 and 31 in the blades and melting stri s and springs arranged in the ottoms of t e grooves 24 and adapted to bear against WALTER s. MINOR.

Witnesses: J. AtIIARNEY, Emma ()amin.

the slots in the end

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