US394684A - Rotary engine - Google Patents

Description

4 Sheets-Sheet 1.

(No Model.)

J. M. FARMER.

ROTARY ENGINE.

Fay.

WITNESSE INVENTOR: mv JIM/W ATTORNEYS.

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4 Sheets-Sheet 3.

(No Model.)

d Dec. 18

INVENTOR: Jam

WITNE S: M

ATTORNEYS,

4 Sheets-Sheet 4.

(No Model.)

J. M. FARMER.

' ROTARY ENGINE.

No. 394,684. Patented Dec. 18, 1888.

fiyf 2% r E f 17 i E F a 4 6 77 Z WITNESSES} INENTOR: M Y (t ATTORNEYS.

UNITED STATES PATENT OFFICE.

I JULIUS M. FARMER, OF NE\\' YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF PART TO CHARLES FREDERICK FOGG, OF SAME PLACE,

AND HORACE C. STROU'I, OF BROOKLYN, NEXV YORK.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 394,684, dated December 18, 1888.

Application filed January 31, 1888. Serial No. 262,492. (No model.)

To all 1072 0710 it may concern: disk D, so that when the latter is rotated it Be it known that I, JULIUS M. FARMER, of also rotates the shaft B. The disk D is the city, county, and State of New York, have mounted to turn on a conical hub, E, secured invented a new and Improved Rotary Engine, to one of the standards of the frame A, and 5 of which the following is a full, clear, and ex- 011 the top of the said conical hub E is formed act description. a steam-chest, F, provided with a steam-inlet The object of the invention is to provide a pipe, G, and also provided with a slide-valve, new and improved rotary engine which H, adapted to open and close alternately the simple and durable in construction and very live-steam ports a and b, extending inward in to effective in operation, utilizing the steam to the hub E from the interior of the steamthe fullest advantage, at the same time being chest F. A suitable mechanism, I, is used for easily reversed. moving the said slide-Valve II over the re The invention consists of a revolving disk spective ports a and 1) whenever the operator n secured to the main driving-shaft and carrydesires to reverse the engine. It is under- 15 ing one, two, or more sets of cylinders, each set stood that when one of the ports a or b is consisting of two cylinders placed diametricopened the other port is closed, and vice versa.

ally opposite each other and connected with On the disk D are secured one, two, or more each other by a piston-rod carrying a cross sets of cylinders, J J and K K, the cylinders head held to slide on a fixed pin arranged ecof each set being placed diametrically oppo- 20 centrically to the said revolving disk, and of site each other, as is shown in Figs. 1 and 4. P a steam-chest formed on the bearing of the In the cylinders J J operate the pistons L disk and connected l.) \fh'lllttl l(; ports with the and Ii, respectively, connected with each sets of steam-cylinders. other by a pistona'od, L carrying in its mid- The invention also consists of certain parts dle a cross-head, L ,131Old6d with a slot, L 2 5 and details and combinations of the same, as extending at right angles 011 each side of the will be fully described hereinafter, and then piston-rod L The cylinders K and K are pointed out in the claims. provided with pistons N and N, respectively, Reference is to be had to the accompanying connected with each other by piston-rod N k drawings, forming a part. of this specification, also provided in its middle with a cross-head, 30 in which similar letters of reference indicate N, having a slot, N", extending at right ancorres 'ionding parts in all the figures. gles to the pistonrod N Thus the two cross- Figure 1 is a front elevation of the imheads L and N are held at right angles to provement. Fig. 2 is a sectional end elevaeach othcrone in frontof the other so that tion of the same on the liner .1." of Fig. i. Fig. a pin, O, extends into the slots I. and N of 35 3 is a like view of the same on the line 1 yof the said cross-heads L and N The pin 0 is L Fig. 4. Fig, 4 is a sectional end elevation of secured to a standard, I, fastened on the main the improvement on the line .2 of Fig. 1. frame A, and the said pin 0 is held eccentric Fig. 5 is a side elevation of the disk-bearing to the main driving-shaft B, the distance beand steam-chest; and Fig. i; is a sectional eletween the axes of the shaft B and the pin 0 4o vation on the line "w u of Fig. 5, showing part being equal to one-half of the stroke of each of the disk in section. of the cylinders J J and N N.

On a suitably constructed frame, A, is On the shaft B is coiled a spring, R, one 0 L mounted to rotate the main driving-shaft B, end of which rests on the hub E, its other end provided with a driving-pulley, C, for transpressing against a collar, S, secured on the 45 mit-ting the rotary motion of the shaft B. The main shaft B. The spring R exerts a pressfront end of the shaft B is provided with a ure against the shaft B in the direction of the head,B,having lugs B fitting in correspondarrow to, so thatthe disk D is firmly held on 5 ing recesses formed in the front end of the I its conical bearing or hub E, thereby forming a steam-tight joint between the said disk D- and its bearing El 5 In the outer end of the cylinder J is formed a port, d, which connects permanently with a channel, 6, formed in the disk D, and extending to a port, (1, formed in the inner end of the cylinder J. A port, f, is formed in. the inner end of the cylinder J, and connects permanently with a channel, g, formed in the disk D and extending to a port, f, formed in the outer end of the cylinder J. The channels e and g extend on opposite sides of the hub or hearing E, as illustrated in Figs. 2 and 3.

Inthe outer end of the cylinder K is formed a port, 71, which registers permanently with a channel, 1', formed in the disk D and extend ing to a port, h,formed in, the inner end of the cylinder K. In the inner end of the cylinder K is, formed a port, j, which connects permanently with the channel 7:, leading to a port,' 7", formed in, the outer end of the cylinder K. The channels 1' and 7r; extend at opposite sides of the hubE and at right angles to the channels e and g, as illustrated in Figs. 1 and 3. The channel e leads into a U- shaped channel, 6, opening at both ends into the conical aperture D, which forms the bearing of the disk D on the hub E. The other channels, g, 2, and 76, open into like U-shaped channels 6 '5 and it" also leadin into the conical aperture D of the disk D.

J The U-shaped channels 6 g and t" it" are arranged opposite each other, as shown in Fig. 2, and the end openings of each of the said channels are alternately opened and closed by the slides 2 g*, F, and k respectively, so that when one of the end openings of the respective channel is open the other one is closed by its corresponding slide, and

vice versa. The open end of each U-shaped channel 6, g, i, or 7t registers alternately at each revolution of. the disk D with the open live-steam ports'a or b and with the exhaustport 0, formedin the hub E and leading to an exhaust-pipe, 0', extending to the outside in the usm l manner. The live-steam port a extends from the steam-chest F and opens into the periphery of the hub E at a near the inner end of the saidhub E, and the other livesteam port 1) extends from the steam-chest F and opens into the periphery of the hub E at 1), near the outer end of the said hub. The endopenings to and b of the live-steam ports a and b are placed a short distance 011 one side of the horizontal central plane of the I hub E, as is plainly shown in Figs. 2 and 3 that is, the endopening a of the live-steam port a is above themiddle line of the disk D and the end opening I) of the live-steam port I) is a like distance below the middle line.

The exhaust-port 0 opens at 0 into the periphery of the hub E, near the inner endof the latter, in a vertical plane with the end opening a of the steam-port a. From the exhau'st-port c, nearits end opening 0 extends a continuation of the exhaust-port c, which opens into the periphery of the hub E at 0 which is in a vertical plane with the end opening 1) of the live-steam port I).

The operation is as follows: As shown in Fig. 4, the live-steam port I) is closed by the slide-valve II, while the live-steam port a is open, so that the steam entering the steam-inlet pipe G passes through the steam-chest F and passes into the port a through the same and out of the latter at its opening a. The slides e i and k are in their outermost position, so that the innermost end openings of the U-shaped channels 6, g, i, and in register with thesaid end opening a, whereby the *live steam can pass alternately into the channels 0, 7;, g, and '1', thus supplying the respective cylinders J J K K with live steam:

\Vhen the channel g registers with the end opening a, the live steam passes into the channel g, and from the latter passes simultaneously to the ports f and fin the cylinders J J, whereby the piston li is moved outward and the piston L is moved inward,- so that the piston-rod Z slides across the face of the disk D in the direction of the arrow 13, whereby the cross-head L forms a fulcrumpoint for the disk D at the pin 0, so that the said disk is rotated in the direction of the arrow 8 and a consequent rotary motion is imparted to the main shaft B, which transmits its rotary motion to the machinery to be driven.

As the disk D revolves, the inner end of the the disk D the steam in the cylinders J and i J can exhaust on. the return-stroke of the pistons l. and L through the ports f and f and thechannel g, through which the steam originally entered. As soon as the channel g has cut off from the end opening a" of the live-steam port a, the next following channel, 1

70, connects by the open end of its U-sha-ped channel it with the said opening a of the live-steam port a, so that the live steam from the steam-chest F passes into the channel 7.:

and to the inner endof the cylinder K and the outer end of the cylinder K, the respect ive pistons N and N being in the same relative position described in reference to the cylinders J and J, and as shown in Fig. 4. The steam will thus act onthe pistons N and N and force the same outward and inward, respectively, whereby a new impulse is given to the disk D in the direction of the arrow 5 by the action of its cross head N "on the eccentric-pin O. Duringone-halfof a revolution the steam entered through the channel 10 into the cylinders K K expanded, forcing the pistonsN and N to the end of then-stroke,

after which the channel k, afterits U-shaped end opening 0 of the exhaust-channel 0, so that on the return-stroke ot the piston N and N the steam will be exhausted through the same channel 70, the respective ports jj, and the exhaustrport c. It is understood that the connection of the open end of the channel g and the channel 76 with the end opening a of the live-steam port A takes place during onequarter of a revolution of the disk D. During the next quarter-revolution ot' the disk D the open end of the Ushaped channel 6 will connect in the same manner as above described in relation to the channels g and It" with the open end a of the live-steam port a, so that the steam enters in the channel 6, and from the latter passes to the ports (1 and d at r the outer or inner ends of the cylinders J and J, respectively. As the pistons L and L in the cylinders J and J have traveled to their outer or inner ends, respectively, the steam entering through the said channel 6 and the ports (Z and (1 will cause the return-stroke of the return-pistons L and L, as above men tioned. This return-stroke takes place during one-half revolution of the disk D from the time that the steam-port g took steam from the live-steam port a, as above mentioned. The channel c, for cutting off from the end a of the live-steam port a, makes one-half of a revolution, and then connects with the end openings 1; of the exhaust-channel c. XV hen the disk D has made one-quarter of a revolution, beginning at the time when the channel e registered with the end opening a of the live-steam port a, then the open end of the U-shaped channel L registers with the open end a of the live-steam port a, so that steam from the steam-chest F passes into the channel 1', and through the outer and inner ends, respectively, of the cylinders K and K in the same manner as above described in reference to the cylinders J and J. Thus it will be seen that each set of cylinders, after taking steam with one channel at the end opening, a, of the two sets of cylinders J J and K K are placed at right angles to each other, it will be seen every quarter-revolution of the same. It will further-be seen that the "steam exerts its pressure on the two pistons of each set of cylinders at the same time, and, as the said two pistons by their piston-rod and cross-head and the eccentric-pin 0 act on the disk D in one direction, the latter is turned with twice the force that would be used if only one cylinder had been employed.

When the operator desires to reverse the engine, he turns the valve mechanism 1 so that the slide-valve H closes the live-steam port a and opens the live-steam port b. The

live steam now enters from the steam-chest F into the port I) and passes to its end opening, I), where it comes in contact with the outer end of the respective slide 0 k or (see Fig. 6,) so that the said slide is moved inward by the pressure of the steam, thereby closing the former open end of the U-shaped channel e, k, g, or i, and opening the other end of the said respective channel. As the open ends a and I) of the respective ports a and b are above and below the horizontal middle line of the disk I), as before described, and shown in Fig. 5, it will be seen that the live steam now passing from the live-steam port I) through the open end 6 of the respective channels e, [0, g, and i will cause the disk D to rotate in the inverse direction of the arrow 5.

The above operation is repeated, with the only. difference that the live steam passes through the port 1), its end opening, I), and into the respective channels c, k, and i, and the exhaust takes place through the same channels, registering with the open end of the exhaust-channel c. As the slides e k g and i are now in their innermost position, the end openings, (1 and 0 are closed on the revolving movement of the disk D by the said slides passing alternately over the said openings a" and Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a rotary engine, the combimttion, with a revolving disk secured to the main drivingshaft and carrying two or more sets of cylinders, each set consisting of two cylinders placed diametrically opposite each other, of a piston-rod connecting the two pistons of a set of cylinders and a cross-head secured on each of the said piston-rods and provided with a slot extending at right angles to the said piston-rod, a fixed pin held eecentrically to 3 the center of the said disk and extending into live-steam port a makes onehalf ot a revolu- I the said slots of the cross-heads, a steam-chest formed on the bearing of the disk and prof vided with two live-steam ports, and a slidevalve held over the said two live-steam ports, so that when one is opened the other is closed, whereby the engine can be reversed, substantially as shown and described.

2. In a rotary steam-engine, the combination, with a bearing provided with steam inlet that a new impulse is given to the disk D at ports and exhaust-ports, of a steam-chest formed on the said bearing, a valve held to slide in the said bearing over the said two ports, so that when one is open the other is closed, a disk held to rotate on the said bearing and secured to the main driving-shaft, said disk being provided with ports adapted to register with the said steam inlet and outlet ports in the bearing, two or more sets of cylinders secured to the said disk, each set consisting of two cylinders placed diametrically opposite each other and connected with each other by a piston-rod carrying a crosshead, and a fixed pin held eccentrically t the center of the said disk and adapted to engage the cross-heads of the said piston-rods, substantially as shown and described.

3. In arotary engine, the combination, with a bearing provided with inlet and outlet ports, of a steam-chest formed on the said. bearing and into which open the said inlet-ports, a

valve held to slide over the said inletports so that When one is open the other is closed, a disk held to rotate on the said bearing and provided with channels adapted to register with the said inlet and outlet ports, slides held over the said channels so as to connect the latter alternately with the respective inlet and outlet ports, two or more sets of cylinders held on the said disk and into which open the said channels in the disk, each set of cylinders consisting of tWo cylinders placed diametrically opposite each other, a piston held to slide in each of the cylinders, a piston-rod connecting the two pistons of one set of cylinders, a cross-head formed in the middle of each piston-rod, each cross-head being provided with a slot extending at right angles to the piston-rod, and a fixed pin held eccentrically to the center of the said disk and extending into the slots of the said crossheads, substantially as shown and described.

JULIUS M. FARMEB.

\Vitnesses:

'lHEo. G. HOSTER, C. SEDG ICK.

I re

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