US704943A - Rotary motor. - Google Patents

Description

No. 704,943. Pae'nted lilly l5, i902.

D. F. SMITH. RorAn'Y moron.

(Application led June 7, 1902.) (No Model.) 3 Sheets-Sheet I.

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l D. F. smTH.

ROTARY MOTOR.

(Application filed June '7, 1902.)

(No Model.) 3 Sheets-Sheet 2.

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(Application led June "l, 1902.]

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' UNITED STATESA PATENT EEICE.

DANIEL E. SII-1TH, 0E NEW YORK, N. Y;

FiOfT'ARY IVI OTO R.

SPECIFICATION forming* part 0f Letters Patent NQ. 704,943, dated July 15, 1 902.

Y Application iiled une '7, 1902. Serial No. 110,630. (No model.)

To all whom it. may concern:

Be it known that I, DANIEL F. SMITH, acitizen of the United States, residing in the borough of'Manhattan, city of'NeW York, State of New York, have .invented a certain new and Improved Rotary Motor, of which the followingis a specification. l Y

Thisl invention comprises the employment of a piston traveling ina circular path in a proper chamber a-nd anannular-ring abutment traveling in; a circular path eccentric to that of the piston, the organization being such that at certain points in the movement the piston crosses the ring abutmentnvhich at all tims'acts as'an abutmentfor the continuous progressivejrotation of the piston. So far as I am awareamovementof this character is novel.v

In the accompanying drawings, Figure 1 is a general longitudinal vertical section, but with some of the parts in alevationg-Fig, a transverse sectionon the line 2 2 of Fig. l; Fig. 3, a similar section on the line 3 3 of Fig. 1; Fig. 4, an elevation of a portion of one of the rotating end'. plates of the motor; Fig. 5, an elevation of the inner face ofthe circular member carrying the piston and showing a section ofthe shaftinwhich it is mounted; Fig. 6, a sideelevationthereof; Fig. 7, a detachedv perspective view of the abutmentring; Fig. 8, a View, partly in elevation .and partly in section, of the main shaft; Fig. 9, a section onthe line') 9 of Fig. 8; Fig. 10, a section on the line 10 104 of Fig. 8; Fig. 11, a longitudinal section of the end of the main shaft and-somerelated parts; Fig. 12, a-section on the line 12 12 of Fig. 1; and Figs. 13, 14., and 15 are sectional views of a diagrammatic character, illustrating the mode of operation of the rotary piston and eccentricallyrotating .abutment-ring.

' The principle of operation of this motor may be understood in a general Way by reference to Figs. 7, 13,14, and 15.

A is the stationary body of the-motor,hav ing an annular chamber A',a'round which the piston B is driven by steam or other-fluid under pressure admitted iuranyappropriate way.

C is the eccentrically-rotating abutmentring. If the piston Band abutment-ring be rotated in unison and steam be taken, for instance, on rthe upper side of the piston, as

viewed in Fig. 13, it will be perceived that the ring, which crosses the path of the piston at the left-hand side of Fig. 13, will act as an abutment. willintersect the abutment-ring thelatter is cut away or notched at C', and through this opening the piston passes, as seenin Fig. 14.

" The abutment-ring-'closes the annular chamber Al behind the piston, which being still propelled by steam taken on the same side again crosses the abutment-ring, as seen at the left-hand side of Fig. 15. In this Way continuous rotation is imparted to the piston tionary part or vbody A,is a projection from the face of the circular .plate B', which has also an annular Bange B2, including the base of the piston, which projects into the chamber'A'.-4 This flange aswell as the pistonand the Walls ofthe chamber are preferably tapered, as indicated in Fig.l 1. The part B is fast to the shaft l) and has steam-ports b b on each side of the pistonconnected`by passages?)2 with separate steam-passages bi in the shaft. The two motors'XYare coupled by an annular casing E, having radial langeslbolted to the respective body-pieces A. 1 Around the central part of the shaft and between the ends of the hubs B3 of the partsB B is an` annular chamber into which steam-admission ports d d in the shaft open, respectively, from-the passages Z13 b3 in the shaft.A Aroundthe shaftis applied a lon gitudin'alislidin g reversing-valve F, splined to the'shaftfand loosely embraced by a ring or sleeve F', seated in an annular groove F2, Fig. 8, in the valve .and engaged by one end of a bell-crank lever, to the other end of which is connected 'a rod, fpassing through a suitablestuffing-box, having its outer end connected with a hand-lever F3. In the valve F are openings f f, by means of At the point Where the pistonv IOO which eitherof the ports d or d may be opened to the annular chamber, which is supplied with steam through a pipe E'. In this or any other appropriate Way steam may be admitted continuously to either side of the piston B to effect its continuous rotation in either direction, suitable provision for exhaust being made.

Contiguous to the outer face of the bodyA and fast upon the shaft is an end plate Gr, having in its inner face a radial slot or groove G', Figs. 1 and 4. Into this slot projects a pin g, extending from the edge of the abutment-ringO. Theabutment-ringistherefore rotated in its annular seat formed in the body A, partly within the annular piston-chamber A and partly in the portion lying outside of such annular chamber, as clearly seen in Figs. 2 and 13 to 15. It will be observed that the abutment-ring traveling in the annular seat formed in the body part is held at one edge oy the end plate G and at the other by the face of the flange B2 of the piston member. The two motors X Y are placed at an angle to each other of one hundred and eighty degrees, and the steam-pressure upon the rigidly-coupled piston members B' B is neutralized. Steam may be exhausted at the proper time from the two parts or sections of the annular piston-chamber A', lying, respectively, within and outside of the eccentrically-disposed abutment-ring. Opposite ends of the portion of the chamber A lying outside of the abutment-ring are connected by passages H l-I'. which communicate with an exhaustchamber H2, opening to an exhaust-pipe H3. Within this exhaust-chamber is a rocking valve h, actuated by a rod h', attached to a pivoted hand-lever 71,2, by means of which the valve h may be rocked to close either exhaustpassage H or II', according to the direction in which the engine is running. To provide a suitable exhaust from that part of the chamber A lying within the eccentric abutmentring, the following arrangement is shown: Opposite parts of this portion of said chamber are respectively connected by passages I I' with annular exhaust-chambers it", formed as annular grooves in the body A in the bearingsurface for the shaft D. At this point the shaft is hollow and is formed with apertures 213, opening to the .annular exhaust-chambers t' i'. Within the hollow end of the shaft is splined a longitudinally-sliding hollow exhaust-valve K, having in it an exhaust-opening le and normally pressed outwardly by a spring K. In the outer end of the valve K is fixed a radially-projecting bolt or stud-axle M, which passes through a slot in the hollow shaft and has applied to its outer end a roller m, that travels upon a cam-face N, Figs. 1 and 12, on a circular` plate N', applied loosely around the hollow end of the shaft and having opposite segmental grooves n, through which bolts n pass and are screwed into the standards O, in which the shaft has its bearings. On a shaft P, extending between the base part of the body and the standard O, is a rocking sleeve P', havingaradial projection, to which is connected a rod P2, to the end of which is applied a hand-lever P3. From the rockshaft extends a toothed segment Q, which engages corresponding teeth q on the cam-plate N. Obviously by manipulation of the lever P the cam-plate N may be partially rotated, so that the cam-surface thereon may be adjusted to properly coperate with the springpressed exhaust-valve K to exhaust at proper times from that part of the piston-chamber A lying within the eccentric abutment-ring.

I have shown my invention organized in what is deemed by me to be a suitable and practicable form. Obviously, however, the details of construction may be varied without departing from the principle of the invention or its general mode of operation.

I claim as my invention- 1. A rotary engine comprisinga piston traveling in an annular steam or pressure chamber `and a movable abutmentring eccentrically disposed so as to divide the pistonchamber into two parts and within which the axis of the piston-chamber is located, the ab utment-rin g and piston being so constructed and operated that the piston may pass across the ring at the required point.

2. A rotary engine comprising an annular pressure piston-chamber, a piston traveling therein, and a rotating eccentrically-disposed abutment-ring intersecting said chamber at two points and formed with a notch through which the piston passes, and within which the axis of th'e piston-chamber is located.

3. A rotary engine comprising a stationary body portion having therein an annular piston-chamber with converging side walls, a piston-carrying memberhaving a correspondingly-tapered piston extending to the bottom of said chamber and a correspondingly-tapered ange extending partlyinto the chamber, an eccentrically-disposed notched abutment-ring traveling in a seat or bearing in the body portion and intersecting said chamber at two points, and means for rotating the abutment-ring in proper unison with the piston.

4. A rotary engine comprising a body-piece having an annular piston-chamber, a pistoncarrying member having a piston occupying said chamber and a flange part closing the vchamber' and a notched eccentrically-disposed abutment-ring traveling in a seat in the body part and held in position by the face of the flange on the piston member and within which the axis of the piston-chamber is located, and means for rotating the abutment-ring in unison with the movement of the piston for the purpose described.

In testimony whereof I have hereunto subscribed my name.

DANIEL F. SMITH. Witnesses:

EDWARD C. DAVIDSON, KATHARINE MACMAHON.

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