US1120248A - Engine. - Google Patents

Description

S. D. SHAKLEY.

ENGINE.

APPLIGATION FILED IEB.20, 1914. 1,120,248, Patented Dec. 8, 1914.

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ENGINE.

APPLIGATlOH FILED FEB.2(|,1914.

1,1 20,248. Patented Dec. 8, 1914.

2 SHEETS SHEET 2.

UNITED STATES PATENT OFFICE.

SAMUEL D. SHAKLEY, 0F CLEVELAND, OHIO, ASSIGNOR OF ONE-HALF TO FRANK C. HOCKETT, OF CLEVELAND, OHIO.

ENGINE.

Specification of Letters Patent.

Patented Dec. 8, 1914.

Application filed February 20, 1814. Serial No. 819,945.

To all whom it may concern:

Be it known that I, SAMUEL D. SHAKLLY, a citizen of the United States, and a resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Improvement in Engines; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to engines and has special reference to explosive or internal combustion engines of the four cycle type wherein the gas or explosive mixture in the cylinder is exploded at the end of every two complete revolutions of the crank shaft.

The object of my invention is to provide a cheap, simple and eflicient form of four cycle engine wherein there will be no puppet or other valves within the cylinder of the engine to control the admission and explosion of the operating fluid and an engine wherein the entire operation will be controlled by mechanism governed by the revolving of the crank shaft of the engine.

A further object of my invention is to provide a four cycle engine wherein the exploded operating mixture will be expelled from the cylinder by compressed air taken into the crank case of the engine and compressed by the piston on its downward stroke.

My invention consists, generally stated, in the novel arrangement, construction and combination of parts as hereinafter more specifically set forth and described and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct, use and operate my improved four cycle engine, I will describe the same more fully referring to the accompanying drawings, in which Figure 1 is a front view of my improved engine showing the connections with the crank shaft. Fig. 2 is a vertical cross sectional view on the line 22 of Fig. 1. Fig. 3 is a like view of the engine showing the valve in a different position. Fig. 4 is a cross sectional view of the cylinder and valve on the line 4-4 of Fig. 2. Fig. 5 is a side view of a horizontal engine showing my invention applied thereto.

Like symbols of reference herein indicate cylinder 1 is provided with the usual water jacket 2 which extends around the same while the usual piston 3 is operatively inclosed in said cylinder and connected to the usual piston rod 4 which in turn is connected to the crank shaft 5 which extends through the crank case 6. The crank case 6 is provided with a puppet valve 7 at any convenient location for the purpose of drawing air from the atmosphere into the crank case for compression as hereinafter described.

At one side of the cvlinder 1 is an admission port 8 and a val e casing 9 connects therewith by a passageway 10 through the same while the other end of said passageway communicates with an operating fluid supply main 10 for furni hing explosive mixture to the cvlinder 1. lVithin the valve casing 9 is a valve 11 which consists of an upper and lower shank 12 and 13 respectivelv connected by a small rod 14 for maintaining the distance between the same while the lower shank is provided with a swi el bearing 15 for receiving a link 16. This link 16 is rotatably connected with an eccentric 17 which is mounted on the small shaft 18 and such shaft is iournaled in the bearings 19 and carries a gear 20 at one of its ends. The gear 20 engages with a gear 21 mounted on the crank shaft 5 and the proportion of said gears is such that the crank shaft 5 revolves twice to every revolution of the small shaft 18, the purpose of which is later explained.

At one side of the cvlinder 1 and communicating with the admission port 8 and with the crank case 6 is a passageway 22 and such passageway is for the purpose of allowing the air compressed in the crank case 6 to pass into the cylinder 1 as later ex lained.

The piston 3 is provided on its upper face with a deflector 24 which is located in such a position that when the piston is in its lower position as shown in Figs. 2 and 3 it will be directly opposite the admission port 8 so that as the operating fluid enters the cylinder from such port it will be deflected toward the upper end of said cylinder.

Opposite the admission port 8 in the cylincer 1 is an exhaust port 25 which communicates with an exhaust main 26 and such port is always open when the piston is in its downward position and the operating fluid prevented from escaping therefrom by the action of the deflector 24 in directing the same toward the upper end of the cylinder. The operation of my improved engine is as follows t--Considering the piston 3 and valve 11 in a positionsuch as shown in Fig. 3 when the operating fluid from the passageway 22 has passed through the port 8 into the cylinder 1. The piston 3 now rises in the cylinder 1 compressing the operat ng fluid until it reaches the end of its stroke. During this time the upper movement of the piston 3 has drawn air from the atmosphere into the crank case 6 through the puppet valve 7 and when the piston reaches the end of its upward stroke the operating fluid will be ignited in the usual manner thus forcing the said piston downward in said cylinder. As the piston thus descends the air below the same in the crank case 6 will be compressed thereby since the puppet valve 7 will not release the air contained in said crank case, while the valve 11 is in a position such as that shown in Fig. 3 with the lower shank 13 closing the passageway 10, so that the compressed air in the cylinder 1 cannot escape through such passageway into the operating fluid main 10*. \Vhen the piston reaches the end of its downward stroke the admission port 8 and the exhaust port 25 are uncovered and the compressed air from the crank case 6 rushes up through the passageway 22 and the port 8 where it strikes against the deflector 24 and is directed upward in said cylinder so that the waste gases in the same are expelled thereby and pass out into the exhaust main 26 thus leaving the cylinder free from all waste products of combustion. The piston 3 now starts to rise in the cylinder 1 and the crank case again receives air through the puppet valve 7 while the valve 11 starts to open by the lower shank 13 being drawn downward. As the piston 3 starts to ascend the operating fluid from the main 1O will pass through the passageway 10 in the valve casing 9 and the port 8 but as the piston 3 prevents the same from passing into the cylinder 1 it will be drawn into the passageway 22. iVhen the air in the crank case 6 has been compressed by the downward stroke of the piston 3 and such piston is at the end of such stroke the valve 11 will be in such a position as sh'mvn in Fig. 3 and the compressed air will rush up through the passageway and force the operating fluid from the passageway 22 into the cylinder 1 where it will be directed toward the upper end thereof by the deflector 2i whereupon the piston will rise and compress said mixture as before explained.

My invention applies to four cycle engines of the single cylinder type and may be applied to either the vertical type as shown and described or to a horizontai engine as in Fig.

If desired my invention can be applied to multiple cylinder engines by using a valve and operating mecimnism for each individual cylinder.

Various modifications and changes in the design, construction and operation of my nnproved engine may lie resorted to Without departing from the spirit of the invention or sacriircing any of its advantages.

What i claim as my invention and desire to secure by Letters Patent is 1. A four cycie internal combustion engine comprising a. cylinder ha r an ad mission and an e) ,aast port, a piston in said cylimiler, a crankshaft to which said piston is connected, a chamber below said piston provided with means for admitting air thereto during each forward stroke (if said piston for compression by the same on its return stroke, a passageway leading from said chamb -...d admission port,

and a .a 'v to admit operating fluid intn a4 on port upon the alternatii ird st said piston so as to permit 1? cunipre pass the and scavii downwaru lOliQS.

A four cycle internal combustion enginecomprising a cylinder having an admission and an exhaust port, a piston in said cylinder, a crank shaft to which said p ston is connected. a chamber below said p ston provided with means for admitting air thereto during each forward stroke o f said piston for compression by the same on same at the end of its return stroke, a passageway leading from said chamber tu said admission port. and a valve opera id by said crank shaft adapted to admit ogicrating fluid into said admission port upon the alternate forward strokes of said piston so as to permit the compressed air to alternately pass the op erating fluid into the cylinder and scavenge the same at the end of its downward strokes.

3. A tour cycle internal combustion engine comprising a cylinder having an ad mission and an exhaust port, a piston in said c finder, a crank shaft to which said piston is connected, a chamber beiow said piston provided with means for admitting thereto during each forward stroke of said piston for compression by the same on its return stroke, a passageway leading from said chamber to said admission port, an eccentric connected to saidcrank shaft, and a valve operated through said eccentric by said crank shaft adapted to admit operating fluid into said admission port upon the alternate forward strokes of said plston so as to permit the compressed air to alternately pass the operating fluid into the cyl- 1o inder and scavenge the same at the end of its downward strokes.

In testimony whereof, I the said SAMUEL D. SHAKLEY have hereunto set my hand.

SAMUEL D. SHAKLEY. Witnesses:

T. B. HUMPHRIES,

JAMES K. BAKEWELL.

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