US966953A - Internal-combustion motor or engine. - Google Patents

Description

H. WFROWING & V. W. RILEY. INTERNAL COMBUSTION MOTOR 0R ENGINE.

APPLIOATION FILED NOV. 29, 1907.

Patented Aug. 9, 1910.

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To all 3.0km); it concern: Be it known that We, HERBERT WILLIAM ROWING and VIoToRWA'rsoN RILEY, subjects of the King ofGr'eat Britain, residing at" 7 St. George street, E., LondonyEngland, have invented new and" useful Improvements in Internal- Combustion Motors or' Engines,- of'whrchthe following is aspec'ific'ationQ This invention'has for its object the construction of an internal combustion engine or -motor so as to embrace simplicity and cheapness'in' manufacture and at the same a time to produce an eflicient engine or motor.

Our engineor motor may be made single or double acting as desired.

Our invention is illustrated by the accom-' panying drawings in which Figure -1 represents a; vertiealsection" through a two stroke cycle'internal'combus tion single acting "engine or motor constructed according to our invention showing means which may be employed for the'supply to our engine or motor of working combustible mixture and compressed air for scavenging respectively. 'Flg. 2 is end view of our engine or'motor showing-the lever hereinafter referred to" as m. Fig. 3

shows the cam used to operate the valve of our engineor motor. arranged as a two stroke internal combustion engine or motor.

The sameletters denote the same parts in all the figures. v v

A is the crank shaft, B the fly. wheel, C C the crank shaft brasses, D the piston and E the connecting rod. All these. parts are old andwell known and may be of any suitable known type so that no further description of them is necessary.

- Referring to Fig. 1 a is the cylinder which isfurnished with an admission port I) for the combustible mixture and an exhaust port 0 for the exhaust gases-the piston D serving also as the exhaustvalve by reason of its uncovering the exhaust port at the end of the outstroke. d is the pipe which conveys the combustible mixture under pressure from the reservoir d to the engine or motor. The reservoir is provided with an inlet d for the combustible mixture-and which is connected with the source of supply of such mixture. 0 is the exhaustpipe. f is a pipe which conveys air under pressurefrom the reservoir f to the engine or motor to clear the cylinder. of spent gases. The reservoir f is provided with. an inlet f for the air specification of Letters latent. Application filed November '29, 1907. Serial Ho. 404,318. 1

and whichis connected with 'supfilly of such air.

the source of Patented Aug. 9, 1910;

0 mixture and air under pressure respectively may be forced into the respective reservoirs by any suitable means and which maybe a pump actuated b the engine or motor or otherwiseone side m is a sparking plug of any ordinary ty e. llhe action of the engine or motor an ranged as abovedescribed is asfollows:- Supposing the engine or motor to be ready to make a working stroke theq charge of -mixture is fired and the piston Dylisxdriven outward till the upper edge thereof un.

covers the exhaust port a in the cylinder wallto allow the spent gases to escape. On the return stroke before [the exhaust port closes the valve 9 is moved. to allow. air

of the pump "piston being used to compress mixture while the other side is used to compress air only; 7

g is a. piston valve having a port 72. therein which when the valve 9 is moved upward opens communication between the pipe f and under pressure to pass through the ports h and 6 into the cylinder and out throfu h the exhaust port thus scavenging the cylin er of:

spent gases. This movement of the valve 9 will also enable the cylinder to be clearedof its Workingcharge in case of a misfire.

\Vhen the exhaust port 1 is almost closed the valve 9 uncovers the port I) by the cam 71 and admits the combustible mixture under pressure into the cylinder. As the exhaust port is still slightly open the cylinder is sure of receivin a full charge. When the cylinder is full 0 mixture the ports 0 and b are closed by the action of the piston and valve respectively and compression takes place to the end of the stroke; the charge isthen fired for a working stroke and so on. a working stroke being obtained every revolution. The valve 9 works in a liner Z of suitable metal.

The cam 71 is shaped so as to give the required motion to the valve 5 and a quick opening to the port b. The shaping of. the

scends until the upper part of the valve is "belowthe' lower opening of, the port I; in the cylinder wall and explosive mixture flows into the cylinder. When point 3 of the cam has arrived below the valve the valve has been graduallyraised and as a consequence the port it has become gradually closed and quite closed atpoint 3 of the' cam, thus both the mixture and .air inlets are closed and these inlets remain. closed during the rotation of the cam under the valve between the points 3 and 4 when compression and firing take place. During the further rotation of the cam under'the valve between the points 4 and 5 the valve is raised till the port I) is brought into communication by means of the port it in the valve with the air inlet pipe f'and scavenging takes place, the piston having simultaneously uncovered the exhaust port 0. On the cam at point 6 arriving under the valve the valve is lowered and the air'inlet is cut off and remains cut ofi until on the successive revolution of the cam point 4: is again under the valve. When point l'of the cam again arrives under the valve the valve having descended as the result a further charge of mixture is admitted to the cylinder and this cycle of operations is repeated with each rotation of the cam.

The amount of opening to be given to the port I), may be obtained by an arrangement such as is shown by way of example by Fig. 2 by which the roller j at the bottom of the valve is raised and held clear of the cam to the required distance so, asto vary the port openingor to' close the port I) altogether. As shown such arrangement consists of a lever m pivoted at n the short arm of the said lever being turned up at m to engage with the head of the pin 0 on which the roller rotates.

- .We prevent the rotation of the valves by the means shown at Z.

What we claim and desire to secure by Letters Patent of the United States is:

In an internal combustion two cycle engine or motor, the combination of a cylinder having an admission port at one end thereof and an exhaust port in the Wall thereof, with a valve chamber at the side of the cylinder parallel thereto and communicating with the interior of the cylinder by means of the admission port, an inlet for combustible mixture in the valve chamber at the top end thereof, an inlet for compressed air for scavenging in the valve chamber located between the inlet for combustiblemixture and the crank shaft, an admission valve for combustible mixture and scaven ing 'air in the valve chamber, the said va ve consisting of a piston of uniform diameter throughout that portion thereof which is located in the valve chamber and having a port in such portion, the said port bein ada ted to connect the air inlet port in t 1e va ve chamber with the cylinder admission port in one position of the valve, the said valve admittmg combustible mixture to the cylinder over the top of the valve in another position of the valve, and a cam on the crank shaft to operate the said valve, the cam having a portion of its periphery concentric with the crank shaft, the remainder of the periphery forming a series of curves not concentric with the crank shaft running into one another and approaching the crank shaft, as specified for the purpose stated.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

HERBERT WILLIAM ROWVING. VICTOR WATSON RILEY. Witnesses:

H. G. FOWLER, B. H. FoWLER.

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