US944362A

US944362A - Internal-combustion engine.

Info

Publication number: US944362A
Application number: US52118409A
Authority: US
Inventors: Dallas C Hathaway
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-10-06
Filing date: 1909-10-06
Publication date: 1909-12-28
Anticipated expiration: 1926-12-28

Description

D. C. HATHAWAY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED 001'. 2, 1908. RENEWED 001'. 6, 1909.

Patented Dec. 28, 1909.

2 SHEETS-SHEET 1.

l l I I II l [177/ [Ill Ill/l l/l/ ll f III II ll 1/ D. G. HATHAWAY.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED OCT. 2, 190a. RENEWED OUT. 6, 1909.

Patented Dec. 28, 1909.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

DALLAS G. HA'IHAWAY, OF SHELDON, ILLINOIS.

INTERNAL-COMBUSTION ENGINE.

Application filed October 2, 1908,

Specification of Letters Patent.

Patented Dec. 28, 1909.

To all '1 7720M it may concern:

Be it known that I, DALLAS C. HATHA- WAY, a citizen of the United States, residin at Sheldon, in the county of Iroquois and State of Illinois, have invented a new and -pal object to provide a novel form of engine in which the piston wings are driven under the impulse resulting from the explosion of the charge.

A further object of the invention is to rovide a rotar engine of this type which shall be self c earingfor the purpose of positively driving out all of the exploded gases.

A still further object of the invention is to provide a rotary compressor so arranged as to supply a charge of gas under pressure behind each of the piston wings as soon as the win s ass beyond the entrance port.

A stil urther object of the invention is to provide a compressor of such construction as to effect the formation of a partial vacuum in the chamber into which the explosive mixture is to be introduced from the carburetor, thus insuring the full supply and this gas being subsequently com pressed prior to its delivery to the explosion chamber of the en ine.

A stillfurther o ject of the invention is to provide a self closing valve in the inlet port so as to separate the explosion chamber from the compressor.

With these and other objects in view, as will more fully hereinafter ap ear, the in vention consists in certain nove features of constructio and arrangement of parts, hereinafter ful y describe illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form, proportions, size and minor details of the structure may be made without de artinig from the spirit or sacrificing any 0? the a vantages of the invention.

In the accom anying drawings :Figure 1 is a sectional e evation of an internal combustion engine constructed in accordance with the invention. Fi 2 is a transverse sectional view on the line 2-2 of Fi 1. Fig. 3 is a similar view on the line 3- of Fig. 1. Fig. 4 is a vertical section on the 7 discharge.

line 4-.4 of Fig. 2. Fig. 5 is a detail perspective view of one of the piston wings detached.

Similar numerals of reference are employed to indicate corresponding parts throughout the several figures of the drawings.

The engine casing comprises a single piece cylindrical casting 10 and a pair of detachable heads 11, the latter bein provided with bearings for the reception 0% a shaft 12 by which the power of the engine may be transmitted to any device to be operated.

Extending from the opposite sides of the main casting are lugs 13 which may rest on any suitable foundation for the support of the entire structure. The main casting 10 is divided into two cylinders 14 and 15 by a centrally disposed partition 16, that is also provided with a bearin for the shaft 12, and this artition as we 1 as the heads and the siren ar wall of the main casting 10 is provided with openings or recesses 17 which are connected to permit the free circulation of water or other coolin fluid.

The curved Wall of tie cylinder 14 is arran ed on two arcuate lines of different radii, the arc of smallest radius corres 0nding to the radius of a piston drum 19 t at is secured to the shaft 12, while the arc of' largest radius forms with the peri hery of the piston a Working space in whic the force is utilized in operating the engine. At the juncture of the arts of different radii at one side of the cylinder is an explosion chamber 20 to whichleads an inlet port 21 through which the explosive mixture passes into t e explosion chamber, and is there ignited by a sparkin plug 22 of any ordinary construction, a ump spark lug being shown in the present instance, w ile at the other side of the cylinder adjacent the juncture of. the portions of largest and smallest radii is an exhaust port 23 throu h which the waste gases may flow to a mu er or other point of The revoluble piston drum is (provided with one or more radially dispose recesses 24 within which slide piston wings 25, said piston wings moving outward into engagement with the wall of largest radius in order that they may be subjected to the force of the explosion and subsequent expansion of the (gases, and being then gradually forced inwar and they engage W1 h the cam like out through the exhaust port by the ad vancing piston wing.

The central. portion of the inner end of each piston wing is provided with a recess 29 for the reception of a. helical tension spring 30, the inner end of which bears against the lower wall of the recess 24. A pin 31 is employed to serve as a guide for the inner portion of the spring,

The outer face and side edges of each piston wmg'are provided with grooves for the reception of spring metal packing strips 32 of the type best shown in 5, each of these strips having

main portions

33, 34 in the form of a bell crank lever, and to each of the arms of the bell crank lever are attached

parallel arms

35, 36. The strips are arranged side by side so as to overlap at a number of points and form fluid proof packlngs which will prevent leakage of any of the gases past the piston wing,

The charges of ex losive fluid are introduced'into the chamb afterappear, and are successively exploded so as to drive the piston wings'around in the direction of the exhaust. port. In order that the piston wings may pass, over the explosion chamber, the walls of the chamber are extended inward to partly bridge the space between the explosion chamber and the arcuate working s ace of the cylinder without interfering with the free passage of the gas.

Secured to the shaft-12 at a point within the cylinder 15 is a cylindrical piston drum 40 having a plurality of piston wings 41 movable in radial recesses formed in the piston drum' and preferably of a construction similar to the wings .of the actuating pistons as previously described. The curved wall of the cylinder 15 is divided into two portions having arcs of different radii, the arc of smallest radius correspondi to the radius of the piston drum 40, and iiese arcuate' surfaces are connected at one side by thecam surface 43 and at the opposite side by a cam surface 44, these being so arranged as to permit the gradual outward movement of the piston wing into the working space, and the gradual return of the piston wing from the working space into the body of the p1ston.

Leading into the working space of the cylinder. 15 is a port 46, that is placed in communication with a carbureter or other suitable source of supply, and leading from chamber of the engine.

er 201 as will herein-.

the working space is the ort 21 which communicates with the exp osion chamber as previously described.

In the operation of the compression pump, the piston wings as they. pass from engagement with. the smallest arc of the cylinder into engagement with the largest arc and from thence on until they are opposite the inlet port 46, tend to create vacuums so that as soon as the'port 46 is uncovered by the piston wing, the charge will be drawn quickly into the working space 15 and as the piston continues its movement, the wing will then operate as a suction pump for the purpose of drawing in an additional quantity of the explosive charge, while-its forward face will operate to compress the charge previously admitted and to force such" compressed charge out through the connecting port 21 and into the explosion That end of the port 21 which communi cates with the explosion chamber is substantially parallel with the axis of the main shaft and is bored out for the rece tion of a valve seat member 50 that refera the form of a tubular casin aving o fie'end enlarged and provided wit a tapered seat for the reception of a correspondin ly shaped valve 51. The valve 51 is carried by a stem 52 that is slidable. in bearings formed by spiders 53 and on the stem is a shoulder 54 against which bears'one end of a spring 55 tending to maintain the valve in its closed position. The valve is'held in closed position so lon as the pressure in the explosion chamber ism excess of that in the compression chamber of the pump, and there ly is will always be a closing pressure sufficient to maintain the valve in closed position until. after each of the operating piston wings rides outward against the bars 38 into engagement with the largest portion of the cylinder and then the pressure being reduced below that in the chamber of the compression pump, a fresh supply of explosive compound will be forced into the explosion chamber and will be ignited at the propertime by the spark plug.

The engine is of very simple construction and re uires no valve operating mechanism, while t e s eed and power may be readily controlled 5y contro quality of the explosive compound allowed to enter the pumping cylinder through the port 46. i

What is claimed is 1. In a rotary internal combustion engine, a pair of cylinders arranged side by side, and each having curved surfaces of difierent mg the quantity or radii, pistons working in the cylinders, 21- Y shaft carrying both pistons, wings carried by the pistons, one of said cylinders,- and the piston working therein operating as a pump, and the other cylinder having an exp osion chamber in its wall (past which chamber the piston of said cylin one end with the pum cylinder, and at the other end with the exp osion chamber.

2. In a rotary internal combustion engine, a pair of c linders arranged side by side, pistons working in the cylinders, a shaft carrying both pistons, wings carried by the pistons, one of said cylinders and the piston 3. In a rotary internal combustion engine,

a pair of cylinders arranged side by side, pistons working in the cylinders, a'shaft carrying both pistons, wings carried by the pistons, one of said cylinders and the piston working therein operating as a pump, and the other cylinder having an explosion chamber in its wall past which the piston of said cylinder travels, a partition between the cylinders, said partition having a passage communicating at one end with the pump cylinder, and at the other end with the explosion chamber, and a valve in said passage, said valve "being held in closed position when subjected to the action of the exploded gases.

4. In a rotary internal combustion engine, a pair of cylinders arranged side by side, and each having curved surfaces of difi'erent radii, pistons working in the cylinders, a shaft carrying both pistons, wings carried by the pistons, one of said cylinders and the piston working therein operating as a pump, and the other cylinder having an explosion chamber in its Wall past which the piston of said cylinder travels, a rib extending over the discharge mouth of the 'explosionchamher, and a partition between the cylinders,

er travels, and a parti-- 'tion between the cylinders, said partition having a valved passage communicating atsaid partition having a valved passage communicating at one end with the amp cylinder, and at the other end with t e explosion chamber.

5. In a rotary internal combustion engine, a cylinder provided with curved portions of di erent radii, inlet and exhaust ports communicating with the cylinder, 9. piston drum, piston wings projecting from the drum, and an auxiliary exhaust port leading from the main exhaust port to the inner wall'of the cylinder and terminating at the latter approximately at the juncture ofthe surfaces of larger and smaller radii.

.6. In an internal combustion engine, the combination with an engine cylinder and piston therein, of a char e pumping cylinder having portions of di erent radii, a piston arranged in saidc linder, a plurality of piston wings carried by the piston drum,

and a suction inlet port communicating with that portion of the cylinder of largest radius, and distant from that portion of the cylinder of smallest radius'to thereby ermit the-formation of a partial vacuum be ore the opening of the port in the discharge leading from the cylinder and through which the charge is forced under pressure.

7. In a. rotary engine of the type described, a piston wing havin its ends and outer edge provided with a 5 0t, and a pair of spring strips mounted in said slots, each of the strips extending across the slot at the outer edge, and. each being further provided with a single arm fitting within the slot at one end of the wing, the strips being further provided with parallel arms which .are disposed in staggered relation to prevent the leakage of the operating fluid.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses.

DALLAS C. HATHAVVAY.

Witnesses:

WILLIAM H. SOMERVILLE, PERRY W. Mmmn.