US889359A - Power-developing apparatus. - Google Patents

Description

o. 889359 PATENTED JUNE 2, 1908. A. c. EASTWOOD.

POWER DEVELOPING APPARATUS. APPLIOATION FILED JUNE 29, 1906.

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No. 889,359. PATENTED JUNE 2, 1908. c. EASTWOOD.-

POWER DEVELOPING APPARATUS."

- APPLICATION FILED JUNE 29, 1906.

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WM 6W A gjws'aewm No. 889,359. PATENTED JUNE 2, 1908.

A. c. EASTWOOD. POWER DEVELOPING APPARATUS.

APPLIOATION FILED JUNE 29, 1906.

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ARTHUR G. EASTWOOD, OF CLEVELAND, OHIO.

POWER-DEVELOPIN G APPARATUS i Specification of Letters Patent.

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Application filed June 29, 1906. Serial No. 3%,102.

To all whom it may concern:

Be it known that I, An'rnUn (I. Ess'rwoon, a citizen of the United States, residing in Cleveland, Ohio, have invented certain improvements in a Power-Developing Apparatus, of which the following isa specification.

My invention relates to an improyed system of apparatus for developing power from steam or other gas under pressure, one object being to provide a paratus capable of using highly superheate steam at relatively high pressures without being subject to the various disadvantages at the present time usually encountered.

A further object of the invention is to provide such a combination of apparatus as will make it possible to obtain a large ratio of ex pansion oi the motive fluid and at the same time secure a uniform angular velocity in the prime mover operated thereby, regardless of the'reduction of the pressure of said motive fluid ('l i'iring its expansion.

Anotl er object of the invention is to provide apparatus for developing power from gas under pressure whose main moving parts I shall not require lubrication, and in addition 1 desire to provide a novel form of fluid operated rotary prime mover so designed as to maintain a constant angular velocity and operate at high clliciency regardless of variations in the pressure at which the motive fluid is supplied.

My invention is also intended to rovide a system, having the above noted 0 iaracteristicsfwith means for automatically controlling its operation under working conditions. These objects I attain as hereinafter set forth, reference being had to the accompanying drawings, in which: Figure 1, is a diagrammatic representation of the apparatus constituting my invention,

dia rammatic representation of the valve contro ling mechanism for the prime mover, certain of the parts being shown in vertical section, and Fig. 3, is a diagrammatic representation somewhat similar to Fig. 1, though with certain parts omitted, illustrating my system as provided with two expansion chambers,

in order that the operation of the primemover may be continuous.

In general terms my system includes a chamber capable of being-filled with liquid and connected to a source of supply of steam Hor other gas under pressure, as well as to a -prnn'en over of the rotary type, there being.

result by constructing the prime mover with a series of rings of buckets or vanes of different diameters and by automatically directing the How oi liquid to that particular one of the rings having the proper peri )heral velocity for producing the highest ei ciency at the particular pressure of the liquid existing at any given time.

In the above drawings, A represents the expansion chamber whose lower portion is connected bynneans of a pipe 0. to the valve chest I) of a rotary prime mover indicated at B. T he chamber A contains a loosely fitting piston E of relatively light cox struo'tion, dc signed to float on a body of liquid within said chamber and which is prevented from turn ing or getting out of a horizontal plane'by means of guidew'ays formed by ribs a. Connected to the top of the expansion chamber is a valve chest 0 communicating through a pipe 0 with a steam boiler or other sourceof gas under pressure, and there is a valve seatedopening between said valve chest and the expansion chamber, having a valve 0. Said valve has a stem. 0 on whiclracts a spring 0 tending to keep the valve seated and there is also on said stem 8. head flanged so as to be capable of engagement by a pair of pivoted hooks 0 carried on a suitable standard, preferably formed as part of the valvechest casing. A. s ring 0 tends to draw together these two hooirs, which also have pivoted to them two links d andd, in turn pivoted together so as to form a toggle for forcing them apart.

A cylinder D is supported adjacent to the expansion chamber A. and is connected to the lower portion of. the same through a pipe (Z and to its upper portion through a pipe 5, therebeing operative in said'cylindera' hollow weighted piston. Lltprovided with'a rod d zadjnstably'oozmected to an elongation of the link or lever 41''. The :valve c has a downwardly prgg'eoti 1kg cl'ldesigned to he engaged by the piston 4 Snoh'manner that are a number of pipes 7L2 to h inclusive and these are respectively connected. to the various cylinders ll so as "to deliver fluid under pressure to them in such manner as to cause each piston h to com )ress. its spring h and consequently open the-valve I) attached thereto.

The tubular portion j of the piston enters'a cylinder 3 conncctedby a pipe to the valve chest I), whereby liquid under pressure is supplied, not only to said cylinder J, but also to the annular groove of the'pistonj through the tubular plunger j and soto that )articular one of the pipes It, etc. whose inlet haupe'ns to be in the same plane'as that of said annular groove.

A weighted lever j is connected through a link j" and a rod j" to the piston j in such upon it at the highest efficiency for that parmanner as to'opposc movement of the latter in one direction and to assist it in the other direction, or, in other words, so as to tend to force the tubular plunger 7' into the cylinder J and to 0 )pose its movement out of said cylinder. 'Ilhe weight on said lever may be adjusted in order to vary the force acting on the piston j, as desired. It will be noted that said piston is so proportioned as to permit the various pipes it, etc, to be open to the and it will be understood that, if desired, the weighted lever y" may be replaced by a suitable spring without in any way departing from my invention.

When the liquid under pressure from the expansion chamber first enters the valve chest I), itwill be seen that all of the valves b are closed. A portion of said liquid, however, asses through the pipe to the cylinder J and'lorces the lunger j outwardly against the action of t 1e weighted lever j. This latter is so adjusted that the. maximum pressure of the liquid will move the said plunger with its piston '7' until the annular.

groove is opposite the inlet of the pipe h, and as'a consequence, li uid is free te'pass from vthe valve chest I) t rough the pipe 9' plunger'j, pipe h to the first one of the cylinders H, in which latter it acts upon the piston hso as to move it against the action of the spring h. Such movement opens the valve 1) o posite thevanes or buckets b, so that -liqui under pressure is delivered to the same. The diameter and other roportions of this particular ring of buckets is such that the liquid delivered from its nozzle b acts ticular pressure, and the said nozzle will remain open as long as the pressure remains within. certain limits in the expansion chamber A. As, however, this pressure l'alls after the cut oil' of the steam takes place, the pressure on the end of the plunger 7' is correspondingly diminished, so that the weighted lever j iorces this into the. cylinder J and at the same time moves the piston so that its atmosphere when they are not covered by it chamber annular groove communicates with the inlet of the pipe Jr' As a result, it will be seen that the pipe k is put in communication with the atmosphere, so that the spring h of the first cylinder closes the valve 1) controlling the flow of liquid to the ring I) of buckets, and at the same time liquid is free to flow through the pipes h from the cylin der.J to the second cylinder HQ The piss ton in this cylinder is then moved to compress its spring h and the second valve b will 0 en, thereby delivering the li uidto the ring 2 of, buckets, which, as in tie case of the first ring, is of such a diameter as to give the highestpfiiciency when operated by liquid at the then-existing pressure.

As the pressure in the expansion chamber continues to fall, the valves 1) of the various remaining nozzles are successively opened and then permitted to close, so that each 3 ring of. buckets receives liquid at the pressure giving the highest efficiency for its particular diameter. It will, of course, be noted that while the ex ansion' chamber is being filled with water, t ere is no fiow'of liquid to, 00 the rime mover B, and while there are a number of ways of providing for a continu ous flow of liquid under pressure through this latter, I. have shown in the present instance, in Fig. 3, a plurality of expansion 9 chambers A and A so arranged that they will operate alternately, one delivering liquid under pressure'to the prime mover B,whilc the other is taking in a supply of water to 1 ill its expansion chamber. ln order to secure this particular sequence of operations, 1 provide mcanswhereby, as long as there isany fluid above a predetermined pressure in one expansion chamber, it will be practically impossible for the admission valve 0 of the other to open, and one Way of securing this result'is to provide cylinders I and 1, respectively having plungers i and 1' directly connected to the valve stems c of the. valves 0.

The cylinder I is connected to the upper' portion of the expansionchamber A through a pipe i while the cylinder 1 is connected to the u pcr portion of the expansion A by means of a 1 Consecan )1 )e i; quently, it the admission va via 0 ol' the expansion .-.hamhcr A be open or if there be any )ressure existing in said chambpr, this wil e exerted u )on the plunger i, which will act to keep closed the valve connected to its valve stem 0'. When, howevei, pressure in thischamber has fallen to a predetermined point, the upward pressure of the piston in the expansion chamber A- will cause opening of its admission valve 0, as previously described, and liquid under pressure will then be delivered to the prime mover B throughthe pipe a In the meantime the chamber A is being filled with liquid until finally its piston engages the lug c of the valve stem, but is prevented 130 of supply of steam assess 1 52 for cutting oil said admission of ges'or vapor after a definite amount of liquid has been discharged from the chamber, and pressure-controlled means for governing the How of liquid from the chamber to the prime mover, sub-- stuntiiilly as described.

11. The combination of a chamber connected to sources of sup iv for gas or vooor under pressure and liqnic respectively, a tee piston within the chamber, a gas admission valve placed to be opened b said piston when at predetermined amount ol liquid has cnterei'l. the chsn'iber, ineensfor holding said valve open, means for automatically causing closing of one valve when a predetermined sinount of liquid has been discharged from the chamber, with means for controlling such discharge of liquid, and motor connected to lie sictnzrtcdlw the discharged liquid, substantially as described.

12. The combination of e chamber, sources and Writer respectively connected thereto, o steam admission valve,

ve, mechanism for causing closing of the valve when a predetermined mnount of liquid has been discharged from the chamber, means For controlling such discharge of lic old, and means for condensing the steam in the chamber, with a. motor connected to be actuated by the discharged liquid, substantially as described.

13. The combination of it chamber connected to'sources of supply of gas under presond liquid res iectlvely, means controlling the inlet of'sairl gas, a discharge pine for the chamber, ii vs. ve in the some, and two pistons operative on said valve, cylinders for the pistons, one of said cylinders com nected to the chamber, substantially as do scribed.

a iaiston in the chamber for opening said name to this specification, in t 14. The combination of means for supply- 111g liquid under varying pressure, a prime mover having a. series or rings or vanes of different diameters, a valve chest connected to' said source heving means for directing liquid to the various rings, a fluid operate valve for each ring or vanes, and pressure c011- roie niesns'io criusin 11' o oreivtld r h idt b ll rotary motor having rings of buckets of different diameters, and automatic pressure con trolled means for directing liqiiid to large diameter ring when i is pressure is high, end to rings of smaller diameter when its ressure diminishes, substantially as desoriheo.

16. The eonioinetion with a, source for supplying liquid under varying pressure, of a prime mover having rings 0 vanes of different diameters, a valve controlled nozzle for eech'ring, and means vior controlling said valve for the nozzles including a pining-ens cylinder therefor connected "to seid liquid source, means tending to move said olunger against the pressure of the liquid in the cyl- D I i inner, a valve operated by said plunger, and cylinders tor operating the nozzle valves respectively'connected to said plunger (3011* trolled valve, substantiallyas described.

In testimony whereof, l have signed my two subscribing witnesses.

' ARTHUR .C. EASTW l Witnesses: i

WILLIAM E. BRADLEY JosH, KLEIN.

be presence of v v

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