US 3807370 A
A rotary engine comprising a stationary, cylindrical case containing an axially sinuous, stationary, circular guideway, a rotor concentric with the guideway, a plurality of open-ended bores extending generally longitudinally through the rotor, equally spaced peripherally about the rotor and inclined away from the guideway and in the direction of rotation of the rotor, a piston reciprocably received in each bore and tethered at its proximal end to follow the guideway, a closure for the end of the case remote from the guideway, and a fuel intake port, an ignition station and an exhaust port in the closure positioned for successive registry of the distal end of each bore as the rotor rotates.
Description (OCR text may contain errors)
nite States [191 Baugh ROTARY ENGINE Archie Baugh, 212 Matlock Rd., Bloomington, 1nd. 47401  Filed: Dec. 29, 1972  Appl. No.: 319,741
 US. Cl. 123/43 C, 92/56  Int. Cl. F02!) 53/08  Field of Search..... 123/43, 43 A, 43 AA, 43 B,
[451 Apr. 30, 1974 A rotary engine comprising a stationary, cylindrical case containing an axially sinuous, stationary, circular guideway, a rotor concentric with the guideway, 21 plurality of open-ended bores extending generally longitudinally through the rotor, equally spaced peripherally about the rotor and inclined away from the guideway and in the direction of rotation of the rotor, a piston reciprocably received in each bore and tethered at its proximal end to follow the guideway, a closure for the end of the case remote from the guideway, and a fuel intake port, an ignition station and an exhaust port in the closure positioned for successive registry of the distal end of each bore as the rotor rotates.
8 Claims, 6 Drawing Figures e g/ m F fi llll 11 7 ROTARY ENGINE The present invention relates to a rotary, internal combustion engine which is simpler, more efficient and less likely to emit noxious effluents than internal combustion engines heretofore known. The primary object of the invention is to provide an engine in which a stationary, cylindrical case receives a stationary, circular cam guideway and receives also a rotor block formed with a plurality of through bores, all inclined forwardly and away from the guideway and each receiving a reciprocating piston, the pistons being operatively connected to the guideway and the ends of the bores remote from the guideway being arranged to register successively with a fuel intake port, an igniter station and an exhaust port as the block rotates.
Further objects of the invention will appear as the description proceeds.
To the accomplishment of the above and related objects, this invention may be embodied in the form illustrated in the accompanying drawings, attention being called to the fact, however, that the drawings are illustrative only, and that change may be made in the specific construction illustrated and described, so long as the scope of the appended claims is not violated.
In the drawings:
FIG. 1 is a vertical section through an engine constructed in accordance with the present invention;
FIG. 2 is a horizontal section taken substantially on the line 22 of FIG. 1;
FIG. 3 is a horizontal section taken substantially on the line 33 of FIG. 1;
FIG. 4 is an enlarged, fragmental section upon a diameter of the block including the axis of a bore;
FIG. 5 is a similar section taken at a 90 angle to the plane of FIG. 4; and
FIG. 6 is a fragmental section taken substantially on the line 66 of FIG. 4.
Referring more particularly to the drawings, it will be seen that I have illustrated a case indicated generally by the reference numeral 10 and comprising a cylinder 11 closed at its opposite ends by heads 12 and 13 secured together by tie rods 14 and nuts 15. The head 13 is formed with a fuel intake port 16, a bore 17 to receive an igniter and an exhaust port 18.
A cam base 19 is secured to the inner face of the head 12 by means of screws 20 or other suitable fastening means and said base carries a cam guideway 21 shaped as a double sine wave and having one surface 22 facing away from the base 12 and a parallel surface 23 facing toward said base 12.
A shaft 24 has one end stepped into a bearing means 25 carried by the head 12 and has its distal region supported in a suitable bearing means 26 carried by the head 13. Between the bearings, said shaft carries a rotor block 27.
The block 27 is formed with four through bores 28, 29, and 31. Since the several bores are identical in arrangement and function, only one will be described in detail.
The bore 28, for instance, is inclined forwardly (in the direction of rotation of the rotor 27) and away from the guideway 21. As is most clearly to be seen in FIG. 4, the bore 28 is also inclined inwardly and away from the guideway so that the diameter of the circle upon which the axes of the ports 16, 17 and 18 are located is less than the diameter of the guideway 21.
In each of the bores 28, 29, 30 and 31 there is reciprocably mounted a piston such as the piston 32 shown in the bore 28. Sincethe pistons are identical, only one will be described in detail.
The proximal end of each piston is double bevelled as at 33, 34 (FIG. 5 to define a diametral ridge 35. On the axis of the piston, a part-spherical snap socket 36 is formed partially to receive a ball 37 to bear upon the guideway surface 22.
At a point somewhat above the bevelled surfaces 33 and 34, the piston is formed with a diametrical bore 38 parallel with the ridge 35 to receive one leg 39 of a clip 40 whose body 41 is partially received in a longitudinal, semicylindrical groove 42 in the side of the piston. A mating semicylindrical groove 43 is formed in a wall of the bore 28 to receive the other portion of the clip body, whereby said piston is afiirmatively held against any rotational movement about its own axis within the bore 28.
A leg 44 parallel with the clip leg 39 underlies the guideway 21 and there carries a roller 45 bearing upon the guideway surface 23. Thus, the piston 32 is tethered to the guideway 21 which may be said to be gripped between the antifriction ball 37 and the antifriction roller 45 so that, as the rotor 27 turns, the proximal end of the piston is forced to follow the sinuous contour of the guideway 21.
It is undesirable for the noncircular, open ends of the bores 28, 29, 30 and 31 to bear directly against the lower face of the head 13 as the rotor 27 turns. Therefore, I have shown a plate 46 secured by screws 47 to the distal end of the rotor 27 and formed with rectilinear ports 48 always in open communication with the distal ends of the several bores. Said ports in the plate 46, of course, come into successive registration with the ports 16, 17 and 18 of the head 13.
As has been stated, the port 17 is adapted to receive an igniter such as, for instance, a conventional sparkplug 49. The reference numeral 50 indicates a fuel conduit leading to a source of fuel (not shown).
As the rotor 27 turns, each piston will be moved downwardly (as viewed in FIG. 1) to create a vacuum just before its bore registers with the intake port 16. A charge of fuel will be drawn into that bore and that charge will be compressed as the piston moves upwardly under the influence of the guideway 21 until, when the bore communicates with the port 17 and the spark plug is energized to produce a spark, the charge will be burned to drive the piston downwardly. As the piston is thus powerfully moved downwardly, its stem will bear against an inclined portion of the trackway 23 to push the rotor 27 in a clockwise direction as viewed from above FIG. 1.
As the rotor continues to turn, the piston will be again forced outwardly by the guideway 21 to scavenge the products of combustion when the bore reaches communication with the port 18. As the rotor continues to turn, the piston will again be retracted by the guideway 21 and, as the bore again reaches communication with the port 16, a charge of fuel will be drawn into the bore for compression and combustion as described above.
Of course, it will be understood that the specific details of the case 10 as illustrated and described herein form no part of my invention and probably will not be used in commercial engines. Instead, the parts 11 and 12 may well be integrated and the part 19 and/or 21 may well be integral parts of the case. Similarly, other means may be used to tether the several pistons to follow the guideway 21. Additionally, of course, suitable lubricating and cooling means will be incorporated into the engine. I have refrained from illustrating such lubricating and/or cooling means in order to avoid complication of the drawings, since conventional fins and/or coolant or lubricant passages may obviously be built into an engine of the character herein disclosed.
1. In an internal combustion engine, an internallycylindrical case, a stationary trackway within said case near one end thereof and formed substantially as an endless double sine wave, a cylindrical block received within said case for concentric rotation therein, a plurality of bores formed in said block, each bore being inclined in the direction of rotation of said block and away from said trackway, a piston reciprocably received in each bore, means at the proximal end of each piston gripping said trackway to follow the curvature thereof, a closure for the other end of said case, said closure being formed with a fuel intake port, a port for reception of an igniter device, and an exhaust port all of said trackway. 4
4. The engine of claim 3 in which the proximal end of each piston is double bevelled to define a diametrical ridge and said first-named antifriction means is a ball permanently seated in said ridge.
5. The engine of claim 3 in which said other antifriction means is a roller joumalled on a hanger fixed to said piston.
6. The engine of claim 4 in which said other antifriction means is a roller' joumalled on a hanger fixed to said piston.
7. The engine of claim 1 including means cooperating with each piston and the wall of its associated bore to restrain said pistons against turning about their respective axes.
8. In a rotary machine, an internally-cylindrical case, a stationary trackway within said case near one end thereof and formed substantially as an endless double sine wave, a cylindrical block received within said case for concentric rotation therein, a plurality of bores formed in said block, each bore being inclined in the direction of rotation of said block and opening through both ends of said block, a piston reciprocably received in each bore, means at the proximal end of each piston gripping said trackway to follow the curvature thereof, a closure for the other end of said case, said closure being formed with an intake port and an exhaust port, said ports being arranged on a common circle forsuccessive registration with the distal ends of said bores, and means rotationally fixed relative to said block and accessible outside said case.
$22353? UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTIN Patent No- 3,807,370 Dated April 30, 1974 Inventofls) Archie Baugh It is certified that error appe ars in the above-identified patent and that said Letters Patent are hereby corrected as shown below;
Column 1, line 64, after "inclined" insert radially Signed and sealed this 8th day of October 19740 (SEAL) Arrest:
MQCOY M. GIBSON JR. C. MARSHALL DANN Atteting Officer Commissioner of Patents