US953964A

US953964A - Rotary engine.

Info

Publication number: US953964A
Application number: US52149609A
Authority: US
Inventors: Samuel A Miles
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-10-07
Filing date: 1909-10-07
Publication date: 1910-04-05
Anticipated expiration: 1927-04-05

Description

s.- A. MILES.

ROTARY ENGINE. APPLIOATIOKI'ILBD OUT. 7, 1909.

Patented Apr. 5,191.0.

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UNITED STATES PATENT OFFICE.

SAMUEL A. MILES, OF PHILADELPHIA, PENNSYLVANIA.

ROTARY ENGINE.

Specification of Letters Patent.

Patented Apr. 5, 19110.

Application filed October 7, 1909. Serial 110-521,496.

engines of the rotary type and has for its objectto provide an engine of this type which may be driven by any suitable working fluid such as steam, gas, or water, and which includes a revoluble element or wheel adapted to form an abutment for the motive fluid whereby the motive fluid is caused to drive the piston in the proper direction.

A. further object of the invention is to provide means for turning the rotary element one notch forward at the proper time and at" each revolution of the piston.

A still further, and one of the principal objects of the invention is to provide a locking mechanism for locking the rotary element against rotation and'for releasing saidelement at certain periods during the revolution of the piston.

Another object of the invention is to proride. a feeding device for the steam or motive fluid adapted to so control the passage of such fluid into the piston chamber that the piston may ,be-driven in either direction with equal efiiciency.

Vi ith the foregoing. and other objects in View, the invention consists of certain novel features of construction, combination and.

arrangement of parts, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 's-a. perspective iew of a complete rotary T en ine, embodying my improvements; Fig. 2 1s a sideelevation thereof; Fig. 3 1s a .similar view with the cover plate removed showing thenormal position of the abutment forming member and the piston at tion of the complete device; Fig. 5 is a vertical section through the casing showing the abutment forming'member and the piston in elevation and showing the position of the piston when about to e acted upon by a which it apper-- new charge of the steam or other motive fluid; Fig. 6 is a central longitudinal section of the feeding device for the motive fiuid; Fig. 7 is an edge elevationof the operating cam for the locking pin; *and,

-Fig. 8 is a horizontal 'section taken on line 8-8 of Fig. 7. p

Referring to the drawings for a more particular description of the invention, the device comprises a casing having a lower cylindrical body 1 and an upper cylindrical head or portion 2,- which form the main and secondary piston and abutmentchambers 3 and 4, respectively. These chambers are closed in at opposite sides by the'removable cover plates 5, which are secured in position by the screws 6 or other equivalent means. The main or power shaft 7 extends centrally through the iston'chamber 3 and has keyed to one end a y-wheel 8. of any suitable form. The piston 9 comprises a cylindrical body 10 rovided with a piston head 11, which wor rs against the wall of the piston chamber. A rotary wheel If is mounted upon the shaft 13 extending through the secondary chamber 4 with Its ends mounted in the bearings 14 of the cover plates. Thiswheel is provided with a'series of radially projecting outwardly tapering arms-or blades 16 which work against the inner surface of the secondarychamber and one of which fit's against the periphery of the body 10 of the piston and forms an abutment for. the in coming steam or other motive fluid.

The motive fluid is admitted into the piston chamber at a point between the arm 01' blade of the rotary Wheel in abutment forming position, and the piston head 11' throu 11 either ofthe ports 17 and 18, res ctive y, either of which is adapted to act as an inlet port, or the exhaust 'port, depending on which direction the piston is to-be driven.

Steam is admitted to and discharged from the portsl'? and 18 b the pipes 19and' 20, the upper ends of wiich are suitably connected with a steam chamber or casing 21. Steam ipes 22 and 23, respectively, extend vertically from the top of the steam chamher or casin 21 in alinement with the pipes" 19 and 20, w ile asteam pipe 24 is connected with the top of the steam casin 21' between the pipes 22 and 23. A'cylin 'rical hollow slide valve 25 is mounted in the steam casing 21 and is provided inits to and near opposits ends with a pair of in et 0 Ill! 26 and 27,mspectively,eitherof whic is a apted to be brought into'registration with the lower end of the supply pipe 24. The slide valve 25 is also provided in its bottom with the discharge port 28, which is adapted to be brought into registration with the upper end of either of the

pipes

19 and 20. WVhen the inlet port 27 of the slide valve is moved into registration with the supply pipe I 24;, the discharge opening 28 of said valve is brought in registration with the supply pipe 19, in which case steam is fed into the piston chamber through the inlet port- 17 and drives the piston to the left, the exhaust steam passing through the port 18 and through the pipe 20 and steam casing 21 to the pipe 23 which, under these conditions, acts as an exhaust.

Should it be desired to reverse the direction of rotation of the piston, the slide valve is moved to the opposite end of the steam casing, which brings the inlet opening 26 of said valve into re istration with the supply pipe 24 and the discharge opening 28 in registration with the pipe 20, when steam will be admitted into the piston chamber through the port 18 and exhausted from the piston chamber through the port 17, The slide valve is provided with a handle 29 which extends through one end of the, steam casing and is provided with the hand wheel 30 for convenience of operation. The rotary wheel 12 is held stationary by suitable locking means, which will be hereinafter described, while the piston is making its revolution, but when the piston nearly reaches or completes its revolution, the rotary wheel is released by said locking means and is turned by means of the piston head to bring the next arm or blade 16 thereof into the position assumed by the previous one when the locking mechanism again operates to hold the rotary wheel in stationary position until the piston nearly completes its next revolution.

The locking means comprises a longitudinally movable locking pin comprising a cylindrical body 31, which works in a tubular extension 32 projecting from one of the cover plates 5, and a reduced engaging portion '33, which extends through the cover plate and is adapted to engage any one of .the recesses or sockets 34 formed in the front faces of the arms or blades of the rotary wheel 12. The locking pin is intermittently released from the sockets or recesses at the proper time in the operation of the engine by a pin releasing member comprising a stem 35 which extends through the slots 36 of the tubularextension 32 and the body 81 of the locking pin, and a cylindrical head 37 at one end of said stem which fits in the cam groove 38 of the cam wheel 39 which is keyed to the power shaft. The inner edge of the cam wheel is suitabl notched, as at &1, so that when first appli in position the should this be found necessary.

head of the pin releasing member is permitted to slip in the groove 38 thereof. It will be evident that this notch or recess also provides for the removal of the cam wheel The coil spring 42 may be arranged in the outer end of the tubular extension 32 to bear against the body of the locking pin to compensate for any lost motion due to wear between the head of the pin releasing member and the walls of the groove 38 of the cam wheel,

It will be understood that while the piston is provided with but one piston head, the same may be provided with two heads,.1f necessary.

From the foregoing description taken in connection with the accompanying drawings,

the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changesm the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention, as defined in the appended-claims. For instance, while I have described the invention as an engine for gen erating power, it is obvious that if power is transmitted to the device by a separate engine or motor, said device may be used as a rotary pump or blower.

I claim as my invention:

1. In a device of the class described, a

casing formed with main and secondary chambers, a piston provided with a piston head rotatably mounted in the main chamber of the casing, a rotary wheel provided with a series of rotary arms or blades r0- 'tatably mounted in the secondary chamber tion, a releasing device for said pin, and a cam wheel keyed to the power shaft and hav ing a cam groove to receive the head of the pin releasing member.

2. In a device of the class described, a casin formed with main and secondary cham er's, a piston provided with a piston head rotatably mounted in the main chamber of the casing, a rotary,wheel provided with a series of rotary arms or blades rotatably mounted in the secondary chamber of the casing, each of said blades being provided in one face with a socket, and adapted, in its turn, to fit against the body of the pis ton and form an abutment, means for sapplying a motive fluid to the piston chamber at a point between the piston head and the arm or blade which is in abutment forming 'position, a locking device comprising a longitudinally movable locking pin adapted to engage the socket in the blade of the rotary wheel which is in abutment forming position, a pin releasing device comprising a stem extending through the pin and a head at one end of said stem, and a cam wheel keyed to the power shaft and having a'cam groove to receive'the head of the pin releasmg member.

3. I11 a device of the class described, a casing formed with main and secondary chambers, a piston provided with a piston head rotatably mounted in the main chamber of the casing, a rotary wheel provided with a series of rotary arms or blades rotatably mounted in the secondary chamber of the casing, each of said blades being provided in one face with a socket, and adapted, in its turn, to lit-against the body of the piston and form an abutment, meansfor supplying a motive fluid to the piston chamber at-a point between the-piston head and the arm or blade which is in .abutment forming position, a tubular extension projecting from one side of the casing, a locking pin having a cylindrical body mounted in said extension and a reduced portion adapted to engage the socket in the blade of the rotary wheel which is in abutment forming position, a pin releasing device comprising a stem extending through said tubular extension and the body of the locking pin, and a head at one end of said stem, and a cam wheel keyed to the power shaft and having a cam groove to receive the head of the pin releasing member.

I. In av device of the class described, a casin formed with main and secondary chambers, a piston provided with a piston head rotatably mounted in the main chamber of the casing, a rotary wheel provided with a series of rotary arms or blades rotatably mounted in the secondary chamber of the casing, each. of said blades being provided in one face with a socket, and adapted, in its turn, to fit against the body of the piston and form an abutment, means for supplying a motive fluid to the piston chamber at a point between the piston head and the arm or blade which is in abutment forming position, a tubular extension projecting from one side of the casing, a locking pin having a cylindrical body mounted in said extension and a reduced portion adapted to engage the socket in the blade of the rotary wheel which is in abutment forming position, a pin releasing device comprising a stem extending through said tubular extension and the body of the locking pin, and a head at one end of said stem, a cam wheel keyed to the power shaftand having ,a cam groove to receive the head of the pin releasing member, and a' spring arranged in the tubular extension to bear against the body of the locking pin, said spring adapted to compensate for any lost motionldue to wear between the head of the pin and the walls 'ofthe cam groove.

5. In a rotary engine, a casing comprising main and secondary chambers, a piston having a piston head mounted in the main chamber of the casing, a rotarywheel provided with a series of outwardly tapering radial blades mounted in the secondary chamber of the casing, each of said blades having straight sides and rounded outer corners, and the piston head having convex sides whereby both sides of the piston head are caused to closely fit the opposed faces of an adjacent pair of blades when the rotary wheel is turned. v

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

SAMUEL A. MILES. [L. 8.]

Witnesses:

' WILLIAM J. THoMAs, EDWARD B. GANN.