US546080A - p ponnay - Google Patents

Description

(No Model.) 2 sheets-sheet m.

R. PONNAY. ROTARY STEAM MOTOR.

Patented Sept. 10, 1895 Richard Ponnay.

WITNESSES: INVENTUR.

ATTEIRNEY ANDREW lGRAHAM. Puo'romnuwAsm NGTONIIC (No Model.) 2 Sheets-Sheet 2.

R. PONNAY.

ROTARY STEAM MOTOR.

No. 546,080. Patented Sept. 10, 1895.

Richard Ponnay,

WITNESSES: INVENTUR,

ATTEIRNEY.

a'rnivr FFlCE.

RICHARD PONNAY, OF PORTLAND, OREGON, ASSIGNOR OF ONE-HALF TO HORACE G. CAMPBELL, OF SAME PLACE.

ROTARY STEAM-MOTO R.

SPECIFICATION forming part of Letters Patent No. 546,080, dated September 10, 1895.

Application filed July 3,1894. Serial as. 516.444. (N0 model.)

To all whom it may concern.-

Be it known that I, RICHARD PONNAY, a citizen of the United States, residing at Portland, (Glencoe Park Addition,) Multnomah county, Oregon, have invented a new and useful Improvement in Rotary Steam-Motors, of which the following is a specification, reference being had to the accompanying drawings, as forming a part hereof.

My invention relates to that class of rotary steam-motors which are operated by a jet of steam thrown directly against the periphery of a wheel for the purpose of obtaining power from the rotary motion imparted to the shaft of such wheel; and the object of my invention is to perfect the contrivance heretofore used for this purpose.

In myinvention the wheel which is mounted on the revolving shaft is rotated by means of a jet of steam thrown directly against an endless series of radial paddles provided in such wheel, and the parts of my co-operating mechanism are so constructed, adapted, and combined as to utilize the effective energy of the steam.

It is further my intention to make my motor of light weight, so as to be easily transportable, to avoid having wearing parts or parts requiring packing or lubricating, except on the journals, and to obtain as large a percentage of power of driving force as is possible in proportion to the amount of steam used.

These advantages I obtain bythe use of the mechanism illustrated in the said accompanying drawings, the respective figures in which represent as follows:

Figure 1 is a side elevation of my invention with parts broken away to showinterior. Fig. 2 is an end view of the same. Fig. 3 is a transverse vertical section. Fig. 4 is an enlarged detail of wheel partly broken away to show construction of steam or expansion chambers and of the steam-tubes, one of the latter being shown in section. of one of the steam-tubes, and Fig. 6 is a detail of the expansive chambers.

Referring to the figures designating the parts of my invention, the housing 1 is provided with standards 2 for supporting the same.

Fig. 5 is a bottom View.

2 is an innercasing suitably supported within the housing.

3 is an annular steam-chamber tapped by the valve 4 admitting the steam from the boiler, and such steam-chamber 3 is provided with a series of angular recesses 5 on the outer surface of the casing 2,in which the steamtubes 6, which will be again referred to later, are inserted. One or both of the walls of the housing are removable, andthey are provided with boxes for the journals of the wheel to revolve in. Mounted within said casing is a wheel 1, which may consist of two plates 1, attached to a hub or collar 8 on the shaft, and in the rim of this wheel are provided a series of boxes, which constitute an endless series of paddles 9, radiating from the wheels axis, as well as an endless series of steam or expansion chambers 10, in which the steam issuing from the steam-tubes 6 is, for the instant, ejected and expands.

The steam-tubes 6 consist of pieces of tubing threaded at one end, which ends are screwed in the angular recesses 5 on the casing, such angular recesses having threaded apertures, in which such pieces of tubing may be inserted, the apertures in which no tubes are inserted being closed by plugs. (See Fig. 1.) 'In affixing the steam-tubes in said recesses 5 they are so adjusted as to throw the steam emitted through them against the paddles in the periphery of the wheel at an acute angle of twenty or thirty degrees in the line of rotation, the average incline which has given good results in practical experiments being about twenty-five degrees.

The apertures 11 at the extremity of the dis: charge ends of the tubes 6 are made of sufficient size to emit a volume of steam of about one-tenth the dimension of the expansionchambers 10in the wheel. Above such extremity 11 the tube is enlarged to four times this dimension, the object of such construction of the steam-tubes 6 being to maintain the jet of steam delivered through them as nearly as possible at boiler-pressure, and at the same time the enlarged area of the expansion-chambers 10, being, as stated, about ten times greater than the area of the discharge-apertures 11 of the steam-tubes, faciliber 10 the chambers on either side thereof are for the instant covered. Chamber 3 is divided into two compartments by two suitable steam-tight partitions 12 and 12 at the lowest and highest points of the casing 2'. (See Fig. 1.) The upper partition is situated between the steam-apertures 11 11, under valve 4, for the purposes hereinafter referred to. One or more steamtubes may be provided for propelling the wheel in one direction and an equal number of steam-tubes for propelling the wheel in an opposite direction, providing the same power is required, thus rendering my motor reversible by manipulating the valve controlling the admissionof steam into the tubes operating the motor in one direction or the other. The expansion-chambers 10 are steam-tight and of enlarged dimensions to allow the steam ejected therein to expand. After the wheel has attained certain speed the centrifugal force developed has a tendency to expel all steam that has been ejected into as well as the air contained in the expansionchambers 10, and thus allow the steam ejected from the steam-tubes free expansion.

13 is a suitable exhaust chamber.

Fig. 3.) s The power of my motor may be considerably increased by using a condensing contrivance (See in connection with my invention-that is to say, some means for producing more or less of a vacuum in the housing in which the wheel revolves.

The speed of my engine may be controlled by the use of any ordinary steam-engine governor.

Having thus described my invention, I claim as follows:

The combination in a rotary steam motor of a removable housing mounted on standards, an annular steam chamber, between the outer housing and cylindrical casing 2, divided into two compartments, said casing being supported within the housing, angular recesses on the outer surface of said casing, steam tubes secured in the angular recesses, passing through said casing and oppositely arranged therein with respect to the two compartments, reduced apertures in the inner ends of the tubes, a journal mounted in boxes in the side walls of the housing,awheel mounted on the journal to revolve within said casing, a series of boxes forming an endless series of paddles on the periphery of the wheel, a steam valve mounted on top the housing to admit steam into either compartment, an exhaust chamber at the bottom of the housing connected with the inner chamber, substantially as described and set forth.

In testimony whereof I have hereunto affixed my signature, in the presence of two witnesses, this 24th day of May, 1894.

RICHARD PONNAY. Witnesses:

H. G. CAMPBELL, T. J. GEISLER.

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