US530375A - Impact rotary steam-motor - Google Patents

Description

(No Model.)

W. H. WILLEY.

IMPACT ROTARY STEAM MOTOR.

No. 530,375. Patentedv Dec. 4, 1894..

y. [UNIT-ED 4-STATIEJS ,PATENT l'()IFICIa i WILLIAM H. WILLEY, OF SANTA MONICA, CALIFORNIA.

IM PACT ROTARY ,STEAM-M OTO a.

SPECIFICATION forming am of Letters Patent No. 530,375, dared December 4, 1894.

. Application filed January 29, 1894. Serial No. 498,416. (No model.)

y To all whom it may conceru` .illustrating my invention.

Be it known that I, WILLIAM H. WILLEY, a citizen of the United States, residing at Santa Monica, in the county of Los Angeles and State of California, have invented an Impact Rotary Steam-Motor, of which the following is a specication. i

My invention is more especially adapted for use' with an electric dynamo,butis applicable for all purposes to which power may be applied but especially in cases where high speed can be economically employed. The object of my invention is to provide a rotary motor which will be operated economically and practically without friction by the impact of a steamjet. i

`The accompanying drawings illustrate my invention.

Figure l is aV fragmental perspective view Fig. 2 isa vertical section transversethe axis ofthe motor. Fig. 3 is an enlarged detail of one ofthe l to the exhaust port a2.'

wings of the rotaryy Inotor showing the pressnre relief valve. Eig. Llis a fragmental view showing a modification of my invention, in

which a relief groove bs is provided to allow from the inlet the escape of steam pressure My invention comprises the combination ofthe inclosingcase A which has the circular rotary-piston chamber A', one or more steam inlets a a arranged substantially tan-,

gential to the circular chamber to discharge steam thereinto, a steam outletor exhaust a arranged substantially inv linejwith the inward discharge or jet from thesteam inletor supply port but deflected from' such line to correspond with the deflection of the steam caused by the rotation of the rotary piston `within the chamber to allow, practically, the direct escape of the injected steam, so that the impact of the steam acting upon thefarms 1 or wings b of the rotarypiston `B willv cause the' ,rotation ofsuch' arms or wings respecty; ively between the inlet and exhaust and Tthe,"y steam will be discharged freely through the i if-exhaust. with only such deiection from a right line as may be necessary to producethe, best effects.`` The piston-B provided with the piston wings?) each of which has a valved port arranged to allow the escape of steam inlowing jet of steam and the rotation of the rotary piston. y d

j In practiceit is` advisable to provide the motor with two or more inlets a a and two exhausts a a2 so thatthe steam may be applied to the piston on opposite sides of the axisthereof, thus to avoid strain upon the bearings `and to double the power without increasing the expense. A further advantage is that the backward escape of steam through the valves b finds exhaust within about one third of the circle of rotation and therefore will escape more freely than where the escape of such steam pressure would be through the exhaust a which is arranged for the practi`- cally direct discharge of the jet of steam which is operating the `rotary motor-that is to say if" but oneexhaust is employed the steam pressure would have to escapebackward through nearly all of the valves b and finally discharge from the discharge a whichwold retard 'the escape ofsteam in starting, but by employing two exhausts a a2 the same maybe arranged so that the back pressure will be discharged sooner than otherwise.

"The wings or arms b of the rotary motor fitfnicely within the circular chamber Aso as -to'be practically steam tight,`and the same are arranged "soas to avoid any undue fricd In the drawings I have shown a rotary piston havingsixwings, as I believe `the same to be most advantageous, a greater number being unnecessary for two ports and t-wo exhausts andwould increase the friction, while a smaller nnmber `will not -give thelatitilde for arrangement of the two inlet and discharge ports which I-prefer. rlthe inlet and dischargel ports a a are so arrangedwith re will at any time interpose between rthe inlet V lation to the rotary piston thatbut onewing i port a and-the outlet or exhaust port athat is to `say the space between the inlet and its outlet port does not exceed thespace `between two wings. In case more inlet ports and-exhaust ports are employed, the number offans or wings must be proportioned tothe number of ports. A' i The valvewhich Ihave shown comprises the valve port p and the spring valve o ari" ranged closing against the impact face b of the wing b, to close the port p againstthe passage of steam .in the direction of rotation kss but toallow the escape of steam in a direction opposite to that of rotation.

By my invention I am enabled to dispense with the use of movable parts which will develop friction, or which would cause the motor to become inoperative or less effective if run at a high rate of speed, and for this reason my new motor may be run advantageously connected direct to machinery which is adapted to run at a high rate of speed thus avoiding the friction and wear which is present where the engine must be geared up to give the desired speed to the machinery. v

In practice the operation is as follows:- The steam is admitted through the port a and strikes upon the wing b which is between the inlet port a and thelexhaust port a' The direct escape of the steam to the exhaust a is thus intercepted by the wing b and its valve b. This tends to create a steam pressure within the space between the wing above mentioned and the one immediately back of it but thesteam escapes backward through the valves in the several wings which interpose between the inlet a and the exhaust a2 and thus escapes through the exhaust a2. The impact of the steam upon the wing b which is in the path of the jet is thus allowed to overbalance the pressure of the steam on the wings intervening between the exhaust a2 and the piston is thus caused to rotate in the direction of the jet and of the dotted arrow in Fig.,2. When the piston has thus begun to rotate it brings the wing which hadbeen interposed between the inlet a and outlet a below such outlet and thus allows the steam to escape through such outlet a but in the meantime-the next rearward wing has been brought into position to receive the impact of the steam jet and is operated upon the jet and is thus driven to continue the rotation of the piston. This rotation becomes more and more rapid until the inlet and discharge of the steam is practically in a right line from the inlet port a to the exhaust port ya. The escape of steam through'thevalves b occurs only at the beginning of the operation of the motor. The rotary piston and its power transmitting connectionsy (not shown) are to beso arranged as to allow such a rate of rotationof the piston as to prevent any pressure of steam between the wings of the rotating piston. This avoids backward escape of steam through the valves when the motor is running.

It will thusl be seen that the steam ports p which are provided in the valves b formin conjunction with each other a steam passage .leading from the inlet port to the exhaust, and'` that when the steam discharged from the `inlet port strikes upon avalve the port is thereby closed tightly and the wings which 4fit closely within the case between theA inlet .and exhaust thus intercepts all of the steam and; retains theforce thereof until such wing,

.reaches the exhaust, when the steam is then ward to the exhaust a2.

free to escape in practically the same line in which itis injected into the piston chamber.

The valve spring c is preferably made of steel or some other exible elastic material which will effectually close the port p against the impact of the steam but willvallow the steam pressure to escape when the piston is being started to rotate.

In Fig. 4 I have shown a modilication of the means'for allowing the steam pressure to escape.

This means consists of a groove b3 which is 'cut in the wall of the piston chamber and extends from the inlet port a back- This groove permits escape of the steam backward to the exhaust in somewhat the same manner in which the same is permitted to escape by the valves b and while I claim specically the peculiar arrangements of the valve which I have described, I do not desire my invention to be limited to any particular means of. permitting the escape of the pressure from the piston chamber when the motor is being started. While myimproved motoris'speciallyadapted for steam it is to be understood that compressed air or gas may be used to furnish the motive power to drive:` the motorif desired. A stuffing box D is arranged one upon each sidey of the case A surrounding the shaft D of the motor to prevent the escape of steam from the cylinder chamber. But one stuffing box is shown in the drawings but it will be understood that another one is arranged upon the other side of thecase. l

. Now having described my invention, wha

I claim as new, and desire to secure by Letters Patent, is-- 1. A rotary motor comprising. the inclosing case having the circular rotary piston chamber, a steam inlet arranged substantially tangential to: the. circular chamber to discharge steam thereinto, a steam outlet or exhaust arranged substantially in line with the inward discharge or jet from the steam inlet but deected from such line to correspond with the deli ection of thesteam caused by the rotation of the piston within the chamber to allow, practically, the direct escape of the injected steam, and the rotary piston arranged in such chamber, providedwith thewings arranged to fit closely inthe case between the inlet and theexhaust, and provided with a relief escape passage leading backward from the inlet to the exhaust, substantially asand for the purpose setr forth.

2; The rotary motor set forth comprising the case having the. circular rotary piston chamber,y two steam inlets arrangedsubstan- `tially tangential to the circular chamber to discharge steam thereinto in opposite directionsandfuponopposite sides thereof; two exhausts each arranged substantially in line with itsrespective inlet but deiiected therefrom to correspond tothe deiiection of the ,steam caused yby the rotation of the piston within the chamber to allow, practicallyfthe .direct escape of the steam the rotary piston IOO arranged in such chamber and provided with the Wings arranged 4to it closely Within the chamber to intercept the passage of steam between each inlet and its respective exhaust,

and suitable pressure relief passages leading backward from and communicating respectively between each inlet and the exhaust of the other inlet.

o 3. The rotary motor set forth comprising the case having the `circular rotary piston chamber; two steaminlets arranged substantially tangential to the' circular chamber to discharge steam thereintoin opposite directions and upon opposite sides thereof; two

exhausts each arranged substantially in line with its respective inlets but deflected therefrom to correspond to the deflection of the steamcaused by the rotation of the piston within the chamber to allow, practically, the direct escape of the steam; the rotary piston arranged in such chamber and provided with asteam inlet arranged to discharge tangentially into such chamber, and providedwith 3o a rotary piston having wings adapted to t practically steam tight in such chamber, each of such wings` being provided with a relief port anda valve arranged upon the impact face of such wing to receive the impact of the steam jet and to close such port.

5. The rotary motor set forth comprising the case provided with the circular rotary piston chamber, the steam inlet arranged substantially tangential to the circular chamber to discharge steam thereinto, a steam outlet or exhaust arranged substantially in line with the inward discharge or jet from the steam inlet; the rotary piston arranged in such chamber and provided with the wings, each of such wings having a discharge port arranged to pass through the path of the discharge jet, anda spring valve arranged to be operated upon by the impact `of the steam jet to close such port during theimpact of thesteam jet 5o thereupon.

W. H. WILLEY.

. Witnesses: y JAMES R. ToWNsEND,

ALFRED I. ToWNsEND.

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