US873201A - Rotary engine. - Google Patents

Description

. PATE-NTED DEC. 10, 1907.

B. P. AUGUSTINE.

ROTARY ENGINE APPLIOATION FILED DEO.17, 1906.

3 SHEETS-SHERT 23.0. wfiwmd No. 873,201 PATENTED DEC. 10, 1907.

B. F. AUGUSTINE. ROTARY ENGINE.

APPLIGATION FILED DEO.17,1906.

3 SHEETSSHEET 2.

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- provided in rear of the pistons with admisf through main and supplemental exhaust ports in the casing.

wide the cylinder with a separate abutment of the'rotary core to properlytime the cut- To all whom it may concmt:

steam or motive fluid exerts its pressure to i, I the supply passages to admit the motive .30 l and the abutment and cut (iii the flui to act 'made' and fitted'tc the c linder at small expense and can be rea ily replaced when claims. i

- of three sheets: Figure ,1 is a longitudinal Fig. 2 is aperspective view of the abutment W en s'iigarns BENJA IN F. AUGUSTINE,

v no'rhny- No. 873,201. Specification of Parana cemen- OF BUFFALO, NEW YORK.

Enema.

Letters Patent. Patented Dz-20:10, 1907.

Application filed December 17. 1906-. Serial No. 848,275.

Be it-known that I, BENJAMIN F.-A eUs- TINE, a citizen of the United States, residing l at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Rotary Engines, of which the following is a specification.

This invention relates'more particularly to improvements in the rotary engine disclosed in U S. Letters Patent No. 810,601, granted to me Jan. 23, 1906, and which, briefly stated, is constructed as follows: A rotary piston carrier or core is arranged to rotate ina stationary casing which contacts at one side with the core to form an abutment. The-- pistons 'or blades against which the sion ports which successively register with fiuidinto the cylinder. between the is'tons expansively. The fluidleaves the cylinder The objects-of the'invention are to propiece or wear piece which can be accurately" worn; also to secure a better arrangement of the pistons or blades and counterbalancing weights; also 'toprovide automatic cutoff means to cooperate with the admissionports off in accordance with variations in load on the engine; and to otherwise improve rotary engines of the type mentioned in'the respects hereinafter described and set forth-in the In the accompanying drawings, consisting sectional elevation. of an engine provided with theimprovement, in line 11, Fig. 3.

or wear piece removed. Fig. 3 is a trans- Verse sectional elevation of the engine in hne i 3-3 Fig. '1. Fig.4'is a fragmentary 'hori zontal section thereof, on a. reduced scale, in

line 44,- Fig. 3, showing'the steam ports 'and assages. Fig.5 is a transverse sectiona elevation thereof in line 55, Fig. 1,

showing the automatic cutoff mechamsm; Fig. 6 is a perspective viewofthe piston carrier or core removed, without the end lates and pistons. Fig. Z is 'adetail sectiona view of the cutoff ring andass'ociated parts,

77,Fig. 5. v I

Like-letters of reference refer to likeparts in the several figuresm a A represents-the stationarycylinderor casing;'---;B' the power shaft which passes through. the casing and is ,.journaled in suit- I able adjustable bearings b on the opposite "ends of the casing; C therotarypiston carrier or. core which is fixed to the shaft to turn therewith and is arranged in the casing to contact at one side therewith, tvhereb is provided an abutment for the motive fiui .to

act against in driving the engine; D the pistons or blades which are arranged in piston pockets or chambers d in the rotary core to move in and odt as the core rotates pand E the stationary camsor eccentrics which are against which the ends of the pistons bear and by which they are held in sliding contact with the inner surface of'the cylinder as the core rotates.

The cylinder or casing may be'of'the construction described in said patent or of any .fixedtothe opposite ends of the casingand 3 othersuitable construction, except instead of having an inner surface formed partly by-a portion of the body of the casing concentric.

with theaxis of the core, and partly by anaoutment block at one side of the cylinder and having an inner face eccentric. with the axis of the core, the body of the casing has a cylindrical here or hole aextendi to end thereof concentric throng out with the axis-of the power shaft and core, and a from end 1 separate hollow cylindrical abutment piece or wear-plate a is-provided having a cylindrical outer surface and a cylindrical bore or inner surface eccentric to its-outer surface and to theiaxis of the rotary core The abutment pieceis fitted in the cylindricalbore ort'hole of the casing. and forms a lining or wear-piece therefor. As the bore of the cylinder body and the inner and outer surfaces of' the abutment piece are all e linabutment piece fitted in the casing with nicev drical,th ese surfaces can be turned an the The rotary core C, Figs. 1 and 6, has ens larged ends or flan es c which, in the present "ment piece and the ends of the casing, against posite ends of'the cylinder around the power Qeach piston can between theother two pistons. The weights the Weights can be located farther from the engine, straddle the thick portion of the abutment pi ece and are surrounded by and l form a'running joint with the end flanges a} of the abutment piece, and circularplates c which are secured to the opposite ends of the core and close the ends of the piston'cham-. bersdf These .end lates are of larger diameter than the flanged ends of the core and extend between the end flanges of the abutwhich the end ,plates bear.

' As the inner surface of the abutment piece on which the pistons travel is cylindrical, the jeceentrics E have circular peripheries on which-the ends of the pistons or blades bear. The eccentrics'are located, like the cams in said patent, in cavities in the ends of the core inside of the core end plates, being bolted 0rsecured in any other suitable way to the op- Threelpistons or blades, instead of four, as in the patent, are preferably employed, as thereby the counterbalancing weight F for side of the axis of the core from such piston are connected to their respective pistons byr-ods or bolts f, Figs. 1 and 3, which pass through the power shaft, and nuts and the weights are'located incav'itie s f pro vided for them in the core. In this way more room is provided for the movements of both the pistons and the counter-weights and larger pistons and weights'can be used and axis of the core where they will respond more readily to the centrifugal force. They 1, and it has annularend flanges a sh aft forwardly,

be arranged at the opposite can also be more readily adjusted when thus located, their securing bolts and nuts being reached through holes in the core which are o posite to thei bolts and are normally cosed by plugs f. The counterbalancing weight-s can be ad'usted to hold the pistons.

- on the abutment piece with just force enough 4 to prevent leakage past the the wear on the pistons and pistons, so that abutment piece is greatly reduced. v

G represents the admission ports extending through the end flanges and plates of the core in rear of the pistons and adapted in the rotation of the core to register with the supply ports g in the ends 1 levers of the cylinder, which are or pipes g with a main steam or motive fluid supply pipe H con-I trolled, by a throttlevalve h;

I indicates the valve rings which are located-inannular recesses in the ends of the cylinder opposite to the admission ports and are c or other means. The main exhaust port or port's K extr nd through the inner wall of the body of the cylinder, which is preferably hollow and communicatcs at its lower portionwith the exhaust pipe it. When a pair of admission ports G registers with the supply ports 9 the steam orother motive fluid will pass through them into the cylinder in rear of the adjacent piston, and, acting between said piston and the abutment, will drive the piston, core and that. is, to the right in Fig. 3, as indicated by the arrow When the admission ports pass the supply ports the steam will be out ofi' and will act expansively until the piston reaches the exhaust'ports K and escapes from the cylinder. This action is repeated for each piston. The arrangement of the ports and action of the engine are substantially the same as in said gin'e.

patented en-' addition 'w th automatic cut-oft means constructed astollows L, Figs-1', 5 and 7 repreheld against the end plates of the core by adjusting screws The engine herein described is provided in sents movable cutofi' rings arranged in an nular recesses 1n" the inner, sides of'the end plates of the core, against the core flanges c, and having ports or openings Z registerin with the adniissionports in said flan es an end plates. Byturning' or shiftin t 1e cutoff rings slightly about their axes the admission ports and so produce an earlier or later cut oil of the steam admitted to the cylinder. In the construction show. governor levers M are arranged. between the ends pf the cylinder and end plates of the core in chambers m, Fig. 1', provided for the purpose in the core end-plates. The levers are tulcrumed betweentheir-ends in any suitable manner to the end plates, and one arm of each lever is weighted and the othe arms of the levers have pin and slot or other loose connections with arms m projecting in. wardly from the cutoff ring into the governor chambers through slots m in the portions of the end plates, separating the governor chambers from the recesses for the cut-oll' rings. The weighted arms of the governor arc preferably supplemented by springs m Fig. 5, attached thereto and to suitable fixed partson the core end plates. \Vhcn the engine is in operation, the position of the governor lovers will vary under the centrifugal action in accordance with the pass and successively K speed of the engine in a well known manner and through their connections with the out their ports will more or less restrict the effective size of' in a 'correspondin I the valve'being he be placed in register witheither of t 20 5 passages stamoffring will shift the latter and properly time the cut-off in accordance with the con-- ditions of load;- Any other suitable-autodescribed.

and exhaust ports leading from the cylinder at opposite sides of the abutment to the' chamber 0 of the reversing valve vP located in the hollow base of the cylinder. A cylin-* drical valve is shown arranged to oscillate ly shaped valve chan' ber, low and connecting at one end with a passage or pipe p leading from the main steam or fluid suppl'y pipe Hand pro-- vided with a throttle valve 12. The reversingvalve has a through port 12 ada ted to lo supand side grooves or 3 p adapted to connect the supplementa ports N andN respectively with plemental. ports N N,

j discharge openings p 1) in the valve chamber indifferent positions of the valve. 1i. the

haust "port; By turning t until its stea m port p registers with t P Ni g' f direction.

to reverse the engine, t

' reversing valve open;

position of the reversin' valve shown in Fig. 3, its steam port and t e supplemental port N are closed and its passage p connects the supplementalport N with the discharge 3 opening 1), in which case said port N 'serves as a supplemental exhaust port for clearing the cylinden-fof steam remaii'iing in advance of'the pistons after they-pass the main exe reversin valve.

e supplemental port N its passage p 'will connect the suppl'ementahport N to the discharge 0 ening "The steam or motive fluid will t on enter the cylinder through the supplemental port N and exhaust through the mainexhaust port K and other supplemental the engine in the opposite When usin gthe' reversin valve is throttle va ve h of the main steam supply valve will be closed and the valve p of'the' pipe 11 leading to the Any suitable handle.

' Ior device 1Q, Fig. 3, can be'employ ed for turnwit movable pistons carried by said core, means mg the reversing valve.

. claim as my invention: v 1. Thecombination of a casing having a cylindrical bore, a hollow separate cylin: drical abutment'piece fitted insaid cylindrical bore of the casing and having a cylin= drical bore eccentric to its outer surface and end flanges concentric with said' outersurface, a rotary core arranged in's'aid abutmecillt, 1808 concentrically with the bore of 'sai casing and with one side in contact with the thick side thereof and having end en- .largfments located withiii and concentric said end flanges of the-abutment piece,

for hold ng said pistons sliding "contact, with the Inner surface of said abutment piece,

located of the cylinder in the rotation ofthe and.means,,= for admittingfluid to and exhausting V it from said casing, substantially as set forth.

'2. The combination of .a casing having cylindrical bore a, hollow separate cylma l drical abutmentpiece fitted in'said 'cyIin N N represent "supplemental admission drical bore of the casing and terminatingshort of the ends of said casing, said abut- I .ment piece having cylindrical end 'fianges,

and a cylindrical bore eccentric to its outer 1 1' surface, a rotary core arranged in said abutcated within said end flanges oi" the abutment piece, and endplates secured to said core and projecting between the'end flanges casing, movable pistons carried by said core,

of said abutment piece and the ends of said;

means for holding said pistons in sliding contact with the lnnei' surface of said abutment piece, and means for admitting fluid to and exhaustin it from said casing, substantially as set forlili.

3. The combination of a casing, a rotary core therein, an odd number of pistons carried by said-core and arranged to move radially toward and from the axis'oftli core, a counter-weight connected to each piston and at the opposite side of the axis of the core therefrom, said counter-weights being arranged between adjacent pistons, and means foradmitting fluid to and exhausting it from thecasing, substantially as set forth.

4. The combination of a, casing, a rotary core therein having an odd number of piston chambers therein and weight chambers between said iston chambers, pistons ar-' ranged to slide in said piston chambers toward and from the a'xis'of the core, coun-' tor-weights arranged in said weight chambers and eachconnected 'to a piston at the opposite side of the axis of the core therefrom, and means foradmitting fluid to and exhausting it from the casing, substantially as set forth. 5. The combination of a casing having an inlet port, a rotary core having an admission port at its peripheral portion which asses sa d port in the cyhnder, a piston carried by sa d core, a cut-oil rin which-rotates with said core and-1s locate near the periphery thereof and has an opening to register with 7 said adnnsslonport, and means located in a said casing within the space bounded by said cut-oll' ring for -shifting said cut-off ring relative to said 'eore, substantially as set forth.

6. The combination of a casing having inlet orts-in its ends, a rotary core wit and plates and register with said inlet'ports in the ends pistons carried by said core,

core, 3 i .cut-oif r ngs &

and rotate with said core and have openings to register with said admission ports, and means located between the ends of said core and the ends of the casing outside of said end plates and connected to said cut-off rings for riedby said core, sated in annular cavities in the ends ofsaid core and have openings to register with said shifting them relative to said core, substantially as set forth.

7. The combination of a easing havinginlet ports in' its ends, a rotary in its ends which pass through said end plates and register wlth said inlet ports in the ends of the cylinder in the rotation oi the eore, pistons carried by said core, packing rings between the end plates of said bore the ends of the casing opposite to said admission ports, cut oif rings arranged in annular cavities in the ends of said core inside re ister with said admission ports, and

.I ll can S core provided 1 with end plates and l1fi.V11'1" a(i1n1SS10Ii ports .L ends of the caslng concentrically within said and located Within said casing for-shifting.

ol said end plates and having openings to stantially as set forth;

4 8". The combination'ofacasing having inlet ports in its ends, a rotary core having admission ports in its ends which pass said inlet ports the ends of the cylinder, istons carent-ofl rings W 'ch are loadmission ports, and means locatedin chamhers between theyends of said core and the cut-off rings .for shifting said cut-off rings relative to said core, substantially as set forth.

Witness my hand, this fifth day of December, 1906. I

p I BENJAMIN F. AUGUSTINE. Witnesses: i

C. W. PARKER,

O. B. HoRNBEoK.

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