US506999A - Rotary engine - Google Patents

Description

(No Model.) Y l 4 Sheets-Sheet 1, 0. 0. GOULD.

ROTARY ENGINE.

4 Sheets-Sheet 2'.

Patented Oct. 17, 1898.

0.0. GOULD. ROTARY ENGINE.

(No Mod'l.)

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(No Model.) 4 Sheets-Sheet 3,

0. 0. GOULD. ROTARY ENGINE.

No. 506,999. Patented Oct. 7, 1893.

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ROTARY ENGINE.

VPaaeniled 0011.17, 1893.

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(No Model.)

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W TNE SSE S 6%@ UNITED STATES PATENT EEICE.

ORALDUS'ORVEL GOULD, OF SPRINGDALE, MICHIGAN.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 506,999, dated October 17, 1893.

Application filed May 31, 1893. Serial No. 476.081. (No model.)

.To all whom it may concern.-

Be itknown that LOEALDUs ORvEL GoULD, residing in Springdale township, near Copemish, in the county of Manistee and State of Michigan, have invented a new and Improved Rotary Engine, of which the following is a full, clear, and exact description.

The object of the invention is to providea new and improved rotary engine, which is simple and durable in construction, very effective in operation, adapted to be reversed, and arranged to utilize the motive agent economically and to the fullest advantage.

The invention is an improvement in the class of rotary engines having a cylinder provided with steam chests, valves and gates on opposite sides of the shaft.

The improvement consists in the construction, arrangement and combination of parts hereinafter described and claimed.

The invention also consists of certain parts and details and combinations of the same, as will be hereinafter described and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is aside elevation of the improvement. Fig. 2 is an end elevation of the same, with the cam for` moving the gates shown in section. Fig. 3 is a transverse section of the improvement on the line 3-3 of Fig. 1. Fig. 4 is a side elevation of the improvement with one-half of the cylinder removed. Fig. 5 is an enlarged sectional plan view of the same on the line 5-5 of Fig. 4. Fig. 6 is a perspective view of the packings for the piston arm. Fig. 7 is a side elevation of the cylinder with the steam chest covers and the slide valves removed. Fig. 8 is a face view of the cam for moving the gates. Fig. 9 is an enlarged rear face view of one-of the slide valves. Fig. 10 is a sectional plan view of the same on the line 10-10 of Fig. 9. Fig. 11 is a cross section of the same on the line 11-11 of Fig 10. Fig. 12 is an enlarged side elevation of one of the gates. Fig. 13 is an enlarged face view of one of the cams for shifting the slide valves. Fig. 14 is a sectional side elevation of the same on the line 14-14 of Fig. 13. Fig. 15 Vis an enlarged face view of an arm for adjusting the said slide valve cam. Fig. 16 is a sectional side elevation of the same on the line 16-16 of Fig. 15. Fig. 17 is a face view of part of the valve gear for a single or non-reversing engine. Fig. 18 is a face view of the cam for the same; and Fig. 19 is a sectional side elevation of the packing for the piston. The improved rotary engine is provided with a cylinder A preferably made in two parts bolted together, as plainly illustrated in the drawings, the said cylinder being rigidly supported on a frame A attached to a suitable foundation or other means of support.

The cylinder A is provided with a central bore A2, see Fig. 3, into which fit heads B and B in which is journaled the main driving shaft C also journaled in a suitable bearing arranged on one side of the cylinder, as plainly shown in Fig. 3, the said main driving shaft being provided with the usual pulleys C for transmitting the power developed by the rotary engine to other machinery.

On the shaft C Within the central bore A2 is secured a disk D projecting into the interior of the cylinder and supporting at its periphery a piston E provided with suitable overlap pingandspring pressed packing plates E engaging the sides and inner cylindrical surface of the rim of the cylinder, as will be readily understood by reference to the drawings, the said packing plates being shown in detail in Figs. 6 and 19.

Into the cylinder A are adapted to pass at opposite sides of the center of the cylinder the gates or abutments F and F mounted to slide radially and guided in suitable guideways arranged in the sides of the cylinder, as indicated in detail in Fig. 12. The outer ends of the gates F and F are provided with slotted heads F2 engaging the continuous rim of a cam G secured on the main driving shaft C so that when the latter revolves the said cam G turns and causes an inward and outward sliding of the gates F and F, it being understood that the said cam is arranged in such a manner that during one-half of the revolution one gate remains stationary in an innermost position, while the other gate is moved outward to its outermost position and back again to Vthe innermost position, as will be readily understood by reference to Fig. 1.

In order to steady the gates F and F', I

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provide the said gates with guides F4 and F5 respectively fitted to slide in guideways A3 and A4 respectively, forming part of the main frame A.

On the front of the cylinder A and on opposite points thereon are arranged the steam chests H and H connected by pipes I and I respectively with a steam supply pipe l2 connected with a suitable source of steam supply and provided with a valve I3 for controlling the steam passing to the said steam chests H and H. The latter are also provided with the exhaust pipes J and J respectively, connected with a common exhaust pipe'J 2 for carrying oi the exhaust steam.

In the steam chests H and H arev mounted to slide the slide valves K and K respectively,

each provided at its under side with two cavities K2 and K5, as plainly shown in Figs. 9 and 10. The slide valves K and K operate over the ports a., b and c d respectively, connecting the steam chests H and ll, respectively, with the interior of the cylinder A, as indicated in Fig. 4, the port-s a and b being arranged diametrically opposite the ports o and d respectively, vand the said ports a and b are located on opposite sides of the gate F and lthe other ports c and d are similarly arranged relative to the gate F. The slide valves K and K also operate over exhaust ports e and f respectively, connecting with the exhaust pipes J and J respectively. The

ports e and fare arranged midway between the openings of theports a and b, and c, d, respectively, in. the corresponding steam chests H and H as will be readily understood by reference to Figs. 1, 5 and 7. The slide valves K and K are secured on valve stems L and L respectively, extending through stuiing boxes in both ends of each corresponding steam chest H or H, the said valve stems being connected at their right hand ends by the links L2 and L3 with a lever L4 and at their left hand ends by links N and N with a hand lever N2 under the control of the operator. The levers L4 and N2 are fulcrumed at their middle on a slide O mounted to slide longitudinally in bearings A5 secured to the frame A.

On the hand lever N2 is secured a segment N5 formed with a segmental slot N4 engaged by a bolt N5 held on the slide Oso that when the nut of the bolt is looseneda swinging motion can be given to the hand lever N2 to change the position of the slide valves K and K to reverse the engine, as hereinafter more fully described. When the bolt N5, however, secures the segment N3 to the slide O, then the reciprocation motion of the latter causes areciprocating of the valves K, K iu unison in the same direction.

In order to impart a sliding movement to the slide' O from the main driving shaft C, I provide the said slide with the arms O and O2 located opposite each other and engaged by a cam Pheld looselyon the shaft C and adapted tobe carried around by the pin Qof a crank arm Q secured on the outer end of the shaft C. The pinQ engages a segmental slot P in the said cam P (see Figs. 1, 13 and 14A) so as to permit of changing the position of the slide O whenreversing the engine, Without disturbing the position of the main `driving shaft and the parts connected therewith. By reference to Figs. 1 and 13, it will be noticed that part of the peripheral edge P2 of the cam P is concentric, so that the valves K and K are held stationary during part of r a revolution of the shaft C and when in their outermost position in the steam chests H and H. Each full revolution of the shaft C imparts a full stroke to the right and to the left to each of the valvesI K and K.

In order to properly center the main shaft C in the heads B and B, I yprovide the latter with adjustable centering arms B2 arranged radially and engaging with their inner ends the said shaft, as plainly illustrated in Fier. 7.

slhe operation is as follows: When the several parts are in the position illustrated in Figs. 1, 4 and 5, then the piston E is in an r angular position in the cylinder A, and both gates F and F are in their innermost position within the cylinder as plainly indicated in said Fig. 4:. The valve K now uncovers the port b while the other valve K covers up `all its portsc, dand f. The motive agent entering the pipe I passes into the steam chest H through the port b and into the cylinder A, to acton the piston E to turn the latter in the direction of the arrow a', thus revolving the shaft C in the same direction. When the piston E travels in this direction and rotates the shaft C then the cam P is carried around `by the arm Q', so that a shifting of the slide O takes place fromthe right tothe left, whereby the valve K moves over its portb and closes the same,.while the other valve K uncoversthe port c at the time the piston E has passed the said port. Simultaneously with this movement the gates F and F are shifted Yso that the gate F moves outward, while the other gate F remains inward, and the motive agent entering the port c, causes a further pressure on the moving pistonE to rotate the latter in the directionof the arrow a. When the valves K and K shift, as above mentioned, the cavity K8 of the said valve K connects the port b with the port e so that the steam in front of the piston E passes through the port b, the cavity K8 to the exhaust port e, and finally into the exhaust pipes J and J2. When the piston E in its onward movement nears the port b, then a shifting of the valves K and K again takes place so that the port b is uncovered at the time the piston has IOO IIO

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passed the said port while the other valve K covers its porte and connects the ports cand f, with each other. Thus, the forward movement is again given to the piston E by the motive agent entering the port b, it being un- F" has taken place at the time the valves K and K shifted. The exhaust steam in front of the piston E passes through the port c and through the cavity K2 in the valve K to the exhaust port f and from the latter to the exhaust pipes J and J2. Nowwhen it is desired to reverse the engine, the Operator loosens the bolt N and then imparts a swinging motion to the lever N2, the latter turning at its fulcrum on the slide O, whereby the valves K and K are shifted in Opposite directions, so that the ports a. andd then become the inlet and exhaust ports in the manner above described relative to the ports b and c, the only difference being that the piston E and shaft C now travel in the inverse direction of the arrow a.

For single Or non-reversing engines, I arrange the valve gear as illustrated in Fig. 17, in which case the slide valves K4 and K5 are secured on the stems L5 'and L6 respectively, extending to the outside of the steam chest ,v and connected with each other at their outer operator at will and a reversing is not permis sible.

It will be seen that an engine of this construction utilizesthe motive agent to the fullest advantage inasmuch as afull headof steam is always on the piston until the valves change, as above described.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a rotary engine, the cylinder, the central transverse shaft, the piston revolving with the latter, steam chests and ports arranged on and in the face of the said cylinder and on opposite sides of the shaft, slide valves and rods working parallel, slide, O, levers pivoted centrally to the slide on opposite side of the shaft, and working in guides, links which connect the above rods and levers, an adjustable slotted segment attached to one of said levers, and a bolt and nut for securing the segment in diiferent adjustments a cam P fixed on the shaft and having a portion of its periphery concentric, and provided with an arc reversing slot P, crank arms Q', keyed on the shaft and having a pin that works in the cam slot, the arms O and O2, attached to the slide O, and arranged for engagement with the cam, alternately sliding gates and the cam G for operating them, all combined as shown and described.

2. In arotary engine, the combination, with the cylinder, its shaft the steam ports and slide valves on opposite sides of the shaft rods pivoted levers anda cam for operating said valves, and a piston revolving in the cylinder, ofthe two gates F, F', arranged radially to the cylinder on opposite sides of the same and` having the slotted heads F2, and the cam G, xed on the shaft and having a peripheral rim fitting in the slots of'said heads,

all as shown and described.

ORALDUS ORVEL GOULD.

Witnesses:

GEORGE W. HALL, ALONZO CHUBB.

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