US918211A

US918211A - Internal-combustion engine.

Info

Publication number: US918211A
Application number: US36924007A
Authority: US
Inventors: Charles Wight Snyder
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-04-20
Filing date: 1907-04-20
Publication date: 1909-04-13
Anticipated expiration: 1926-04-13

Description

c. w. SNYDER.

INTERNAL COMBUSTION ENGINE- APPLIOATION FILED APR:20.1907.

Patented Apr. 13, 1909.

2 SHEETS-SHEET 1.

Hi ll h IVE/VTOH Czarzeamzytzel' B y A TTORNEYS fro cl'bwrete G. W. SNYDER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED APR. 20,1907.

@1 21 1 Patented Apr. 13, 1909.

2 SHEETS-SHEET 2i WITNESSES INVENTO/T v lazZes/lg izyder ATTORNEYS UNITED STATES *reornivr OFFICE.

CHARLES WIGHT SNYDER, OF HUDSON, NEW YORK.

INTERNAL-COMBUSTION ENGINE.

To all whom it may concern:

Be it known that I, CHARLES VIGHT bxroicu, a citizen of the United States, and

a resident of Hudson, in the county of 00-] -more. completely scavenged from the cylinider at. the end of the explosion stroke and the fresh charge more effectively admitted thereto.

The invention consists in certain features of construction and combination of parts, all of which will be fully set forth hereinafter and particularly pointed out in the claims. I Reference. is to be had to .the accompanying drawings forming a part of. this specification, in which similar characters of referenceindicate corresponding parts in all the ligures, and in which- Figure 1 is a side elevation of an engine constructed in accordance with myyinvention; Fig. 2 is a central vertical section taken on the line 22 of Fig. 1; Fig. 3 is a transverse section taken on the line 33 of Fig. 2, the piston beingremoved; and Fig. 4 is a detail section similar to a portion of Fig. 2, but showing the parts in a diiferent position.

In my improved engine I provide a cylin-.

der 10 of anysuitable form and provided with a jacket Her other suitable means for cooling. The cylinder is connected toany Suitable form of crank case 12, within which operates the crank 13 and the piston rod 14;

the latter being connected to any suitablei form of piston 15 mounted within the cylinder. All of theparts above referred to may be constructed according to any well known design, inasmuch as the details thereof'conf stit-ute no portion of my invention.

The en ine is preferably so constructed that the esh charge is compressed in the crank case before being delivered to the working cylinder, and to permit of this I provide a suitable inlet pipe '16 leading from l the carbureter, not shown, to the crank case, an'd from the crank case a conduit 17 leads to the inlet port of the working cylinder.

a third Specification of Letters Patent. Application filed. April 20, 1907.

Patented April 13, 1909.

Serial no. 369,240.

directly with the atmosphere, whereby only.

pure air is compressed in the crank case, and the conduit 17 may lead through the carbureter on its way to the inlet port, or may have means for delivering the liquid fuel thereto. The cylinder is provided with an inlet port 18 and an exhaust port 19 in the walls thereof, and both portsare preferably so located that they are uncovered by the piston at or adjacent the end of its working stroke, although the inlet port may, if desired, be formed at the opposite end of the cylinder and adjacent the spark plug 20. In the form of the invention illustrated in the accompanying drawings, the inlet port 18 and the exhaust port 19 are on opposite sides of the cylinder and are adapted to be uncovered simultaneously by the piston. The face of the piston is provided with an upwardly cylinder before being permitted to escape through the exhaust port.

' In the specific form of my invention illustrated inthe accompanying drawings, I provide means whereby either air or an explosive mixture may be admitted through a single inlet port, and whereby. this port or the two separate conduits leading thereto may be so controlled that at the end of the explosion stroke the exhaust port is opened,

fresh air is admitted toforce out the exhaust gas, and then the fresh charge is admitted.

Adjacentthe inlet port I provide a rotary three-way valve 22 adapted to control the passage through the inlet port 18, through the conduit 17 leading from the crank case or other explosive mixture compressor, and

assa e through a conduit 23 communicating with the outside atmosphere or with any suitable air compressor. This valve is preferably cylindrical in form at 1ts ends, and intermediate its ends it. is cutaway to form a crescent-shaped portion 24 and adapted to place the inlet port 18 in communication with either the air passage 23 or the fuel mixture conduit 17. Th s valve 1s provided with a journal.- 25v at one end thereof having a bearing inthe wall of the valve casing 30,

andhaving a shaft- 26 extending out through the engine frame at the opposite side and supporting a sprocket or gear wheel 27. This sprocket or gear wheel is operatively each revolution of the crank shaft.

The inlet port 18 is preferably upon substantially the same level as the exhaust port 19, whereby they are uncovered simultaneously. The valve 22 and its valve casing,30 are preferably located closely adjacent the inlet port 18, and the valve casing is cut away --to leave a recess 31 adjacent the passage leading to the inlet oft 18, whereby the va ve will not' be close closes said port.

In the operation of my improved engine, the arts will occupy the positions indicated in ig. 2 just before the end of the exhaust stroke, and the exhaust port 19 will be uncovered by the piston 15, whereby the ex haust gases can escape, but even though the inlet port 18 is open, the valve 22 is not rotated to a sufficient extent to permit of the escape of the exhaust through the conduit 23. Most of the exhaust gases escape at this instant, and as the piston pro resses a sli htly greater distance, the rotation of the va ve opens the conduit 23, and the inertia of the gases passing through the exhaust port 19 and the conduit or mufller connected thereto, causes a suction and fresh air is drawn'inward through the port 18 andinto the engine cylinder. If this inertia or suction is not s'ufliciently great, a compressor generating a small pressure, as, for instance, one-half to one pound, may be connected to the conduit 23, or a suction fan ma be connected to the exhaust port 19. As t e piston travels to the end of its stroke the ort 19 is completely uncovered and the con uit 23 is opened and in free communication with the interior of the c linder, at which'time the cylinder is comp etely scavenged, the parts occupyin lmes 1n 1g. 4. As the piston starts upon the return stroke, the conduit 23 is uickly closed and by the time the piston reac es the i position shown in dotted lmes in Fi 4, the

.valve is rotated to its osition, also s own in dotted'lines, and the interior of the engine cylinder is in free communication with the conduit 17. At this time the explosive mixture which has been compressed 1n the crank case is forced upward into the engine cylinder until the piston is moved up to a suflicient distance to shut off communication, the recess 31 preventin the valve from closing before the .port. e com ression, ignition and explosion are'then e ected as in an ordinary internal combustion engine. As the valve 22 rotates twice during each revolution of the main shaft 29, it is evident that the

conduits

23 and 17 are successively before the plston 1 the positions indicated in solidplaced in communication with the inlet ort iston at this time, the rotation'o the valve is immaterial.

As the accompanying drawings illustrate 7 only one embodiment of my invention, it is evident that various changes may be made in the construction thereof and within the scope'o'f the appended claims, without departin from the spirit ofthe invention;

In t e foregoing specification and in the claims, the term explosive mixture is used to designate the fluid delivered from the crank case through the conduit 17, but.

by the term. explosive mixture I do not wish to be limited to a mixture having the exact and thegretic'al proportions for producing perfect combustion. It may be desirable to deliver a somewhat richer mixture through the conduit 17 than is normally desirable in an engineicylinder, as the air admitted through the conduit 23 and remaining. in the cylinder will serve to dilute the charge.

Having thus described my invention, I claim as new and desire to secure by Letters Patent '1. In an internal combustion engine, a Working cylinder having anexhaust port, an .air delivery conduit and an ex losive mixture conduit communicating wit said cylinder, anda single valve at thejunction ot' said conduits for o ening and closing said conduits independent y and in succession.

2. In an internal combustion engine, a workin' cylinder having a single inlet port, an exp osivemixture delivery conduit, and means operatin to establish communication between said in ct port and the outside atmosphere and between said inlet portand said explosive mixture delivery conduit in succession.

3. In an internal combustion engine, a

working cylinder having anexhaust port and a sing e inlet port, a piston for controlling said exhaust port, an explosive mixture conduit communicating with said inlet port, an air delivery conduit communicating with said inlet port-and with a source of air supply under atmospheric pressure, and. means independent of the piston for admitting air under atmospheric pressure and an ex losive mixture under compression throng said inlet port after said exhaust port 1s opened,.whereby the inertia of the exhaust gases'in escaping from said exhaust port draws in air under atmospheric pres-. sure prior to-the admission of the explosive mixture under compression.

' inlet port in succession after the 'exhaust' 4, In an internal combustion engine, a working cylinder having an lnlet ort and an exhaust port, means for control mg said last-mentioned port, and means for admit ting air under atmospheric pressure and ex; ploslve mlxture under compression to sand port is opened, whereby the inertia of the exhaust gasesin escaping from said exhaust port draws in alr under atmospheric pressure prior to theadmission of the explosive mixture under compression. p

In an internal combustion engine, a

working cylinder havin an inlet ..port, a

piston within said cylin'er and adaptedto control said port, an air'delivery conduit and an explosive mixture conduit commufnicating with said port, and means independent of the piston for opening and closing said conduits in succession.

6. In an internal combustion engine, a

' working cylinder having an inlet port, a

pistonwithin said cylinder and adapted to control said port, an air delivery conduit and an'explosive mixture delivery conduit communicating with said port, and means foropening saio conduits in successionfwhile the inlet port is uncovered by the pistonj 7. In an internal ,combustion engine, a

working cylinder halving an inlet port, a

and means for rotating said valve to open the conduits duringthe final portion of the explosion stroke'and the first portion of the compression stroke.

9. An internal combustion engine having" a working cylinder provided, with an inlet port and an exhaust port, a piston within said cylinder and adapted to control both of said ports, a crank case adapted to serve as a compression chamber, a conduit leading from said crank case to said inlet port, a second conduit communicating with said inlet port, and a rotary valve adjacent said inlet port and adapted to 'open' and close said conduits in succession while the inlet portisuncovered by the piston. v

10. In a two-cycle, internal combustion engine, a working cylinder having an exhaust port and an inlet port, a piston for controlling both of said ports, a chamber communicating with said inlet port, an air delivery conduit communicating with said chamber, and an explosive mixture conduit communicatingwith sald chamber. and valve mechanism for. controlling said conduits.

.11. In a two-cycle, lnternal combustion engine, a Working cylinder having an exhaust port and an inlet port, a piston for controlling --both of said ports, a chamber communicating with said inlet port, an air deliveryjconduit communicating with said chamber, an explosive mixture conduit communicating with said chamber, and valve mechanism for controlling the communica-- tionbetween said conduits and said chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES WIGHT SNYDER. Witnesses: H. HADLEY SMITH, J L. D. SMITH.