US1187834A - Engine-valve. - Google Patents

Description

C. F. HENRY.

. ENGINE VALVE.

APPLICATION FILED MAR. 9. 1914.

Patented June 20, 1916.

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C. F'. HENRY.

ENGINE VALVE. I

APPLICATION FILED MAR. 9. 19m.

Patented June 20, 1916.

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ENGINE-VALVE.

Application fiIed March 9, 1914.

To all whom it may concern:

Be it known that I, CHARLES FnnMoN'r HENRY, of the town of Bow Island, in the Province of Alberta, Canada, have invented certain new and useful Improvements in Engine-Valves, of which the following is the specification.

The invention relates to a valve applicable to steam and other such engines and the object of the invention is to do away with the various slide and rocker valves, valve gears and eccentrics now in common use on engines and substitute therefor a revolving valve of the barrel type whose motion is continuous, thus causing no jerks or jars, and supplying one which may be run at a very high rate of speed without danger of displacement of the valve or injury to it.

A. further object of the invention is to provide a steam tight valve which may be readily operated to reverse the engine when required such valve being constructed so that it can be easily set without removal and can also be quickly removed when required for repair purposes.

It consists essentially in the arrangement and construction of parts hereinafter more particularly described and later pointed out in the appended claims.

Figure 1 represents a side view of an engine with the valve applied. Fig. 2 is a plan view of the same. Fig. 3 represents an enlarged detailed horizontal sectional view through the valve and engine cylinder. Fig. 4; is a vertical sectional view through the valve and cylinder, the section being taken in the plane denoted by the line XX Fig. 3. Fig. 5 is a perspective view of the controlling sleeve. Fig. 6 is a vertical sectional view through the valve, the section being taken in the plane denoted by the line Y-Y Fig. 3. Fig. 7 is a vertical sectional view through the valve and ports showing the initial setting of the sleeve required to produce a forward rotation of the engine. Fig. 8 is a'vertical sectional view through the valve and ports showing the initial setting of the sleeve required to produce a re verse rotation of the engine.

In the drawings like characters of reference indicate corresponding parts in each figure.

I might explain that the present invention is in reality an improvement on thelvalve as set forth in United States Patent No.

Specification of Letters Patent.

Patented June 2Q, 191 6.

Serial No. 823,419.

1055531 which patent was issued to another party and myself as co-inventors on the 11th day of March 1913. In the said patent a disk valve is shown, the passage of the steam through the valve being controlled by a reversing disk having suitable ports therein and controlling the passage of the steam from the valve ports to the engine ports. In the present application the valve takes the form of a rotary barrel having suitable ports therein which is inclosed Within a sleeve, the sleeve controlling the passage of the steam from the interior of the valve to the engine ports.

Referring now to the drawing, 1 represents a suitable base plate supporting an engine cylinder 2 and a set of bearing blocks 3 and 4 in turn carrying a cross shaft 5. The shaft is supplied with a wheel 6 and a bevel gear 7, the wheel being supplied with an eccentric pin 8.

I 9 is a rod connecting the pin 8 with a pis ton rod 10 secured to a piston 11 which operates in the cylinder.

Adj oining the side of the cylinder I have formed a cylindrical valve chamber 12 which is preferably cast integral with the cylinder and is fitted with two removable end plates 13 and 14.

15 and 16 are ports leading from the wall of the chamber to the head and crank ends of the cylinder respectively.

17 is a hollowrotary valve in the form of ,a cylinder or barrel and contained within the chamber 12, one end of the valve being provided with an extending feed pipe 18 mounted in a suitable bushing carried by the end plate 14 while the other end of the valve is supplied with an extending shaft 19 rotatably mounted in a suitable bushing presented by the end plate 13.

The horizontal axes of the shaft and the inlet pipe are alined and they are mounted in the end plates so that the said valve is arranged concentric to the chamber.

20 is a controlling sleeve surrounding the "body of the valve and presenting a pair of the walls of the valve and arranged at 11d in the rotation of the valve.

apart and designed in the rotation of the valve to register with the ports 21 and 22 a respectively. 25 and 26 are exhaust ports in the form of slots located in the face of the valve and arrangc'dat 180 apart and designed to register also wlth the ports 21 and 22 respectively open or close the ports I have made it somewhat longer than the valve so that onev end overhangs the valve. This end is'fitted with a rack 29 which is engaged by a pinion 30 fixed on the inner end of a spindle 31 'mounted' in the plate 13. The spindle is provided with a controlling lever 32.

The extending end of the shaft; 19 is 'mountedin suitable brackets 33 and carries bevel wheel 34 which meshescontinuously with the bevel gear 7;already referred to.

" The gear and pinion are constructed .so .that'the shaft 19 rotates at' the same speed as the crank shaft. In other words by this arrangement the valve is compelled to rotate one half a revolution for each stroke of the piston.

. The wheel 34 is supplied with an extend-- ing sleeve carrying a set screw3l which allows, the adjustmentof thdwheel on the shaft;

'The "inlet pipe 18 communicates with a stationary supply pipe 35, the connection between the supply'and feed pipes being such that a steam tight joint is formed while allowing of the rotation ofthefeed pipe in thesupply pipe.

' In setting upthe valve it is preferable to first'turn the engine to what is commonly 7 called dead center position and then afterward adjust the valve by undoing the set screw 34:" until the ports in the valve are directly opposite the ports andl6.

Thej'operationjof the engine is now described:- Live steamentersfltlle valve from the pipe35 through the pipe 18 and is admitted infthe rotation ofthe valve alternately to the head andc'rank ends of the cylinder through the ports 23, 21 and 15 and theports 2 1, .22;and 16; As the live steam is entermg one end of the cylinderithe exhaust steam is being freed from the opposite end of the cylinder. The exhaust steampasses throughthe ports 15,; 21 and 25 and 16, 22

' and 2.6 and finally passes from-the exhaust chambers 27 and 28 to the exhaust pipes 36.

,Thefamount of steam fedfto the cylinder canbe controlled by manipulating the lever 32 which when turned causes the sleeve to rotate so as to open or close the ports 21 and 22 as the case may be.

Particular attention is now directed to Figs. 7 and 8 of the drawings wherein particular settings of the valve sleeve are shown.

Assuming that the sleeve has been previously turned to closed position that is with its ports turned away from the ports 15 and 16 and assuming also that the engine shaft is turned or cranked to bring the engine to dead center position which position efiects the registration so to speak of the valve ports with the cylinder entrance ports and that it is required to start the engine in the forward direction. To accomplish this the sleeve is turned by means of the lever to the position shown in Fig. 7 of the drawings in which position it admits a small quantity of live steam to the cylinder. The admission of this steam to the cylinder would cause the piston to move and consequently rotate the valve. Owing to the setting of the sleeve, as shown in the said latter figure the engine if it starts in the reverse direction continues to rotate in that direction for the reason that the entry port of the valve will immediately sweep past the opening in the sleeve and out off the steam. However if the engine turned in the forward direction steam would be admitted to the cylinder for the complete sweep of the valve inlet port past the sleeve opening. Sufiicient steam would in this way-be admitted before the valve closed to start the engine.

If it is required that the engine operate "in a reverse direction the sleeve is turned to the position shown in Fig. 8' of the drawings. In this position it will be seen that only a small amount of steam can enter the cylinder before the valve closesif the en- 'ginerotates in the [forward direction, not

enough to start the engine. However if the engine turns or starts in the reverse direcsuitable ports with the headand' crank ends 'of the engine cylinder, end plates closing the ends of the chamber, a sleeve rotatably 'mounted in the casing and having suitable ports passing through the wall thereof and designed to registerv with the aforesaid ports,

means for adjusting the position of the sleeve and easing, a hollow rotary cylindrical valve mountedwithin the sleeve, said valve having the ends thereof closed and set back from the end plates of the chamber and providing exhaust chambers and being fitted further with inlet ports passing through the walls thereof and exhaust ports in the form of slots located in the outer face thereof and opening to the exhaust chambers, said ports being arranged to register in the rotation of the valve with the ports of the sleeve and means for admitting live.

steam to the interior of the valve, as and for the purpose specified.

2. The combination with an engine cylinder, of a cylindrical valve casing adjoining the cylinder and communicating through suitable inlet and exhaust ports with the head and crank ends of the cylinder, end plates closing the ends of the valve chamber, a sleeve rotatably mounted in the chamber and fitted with ports designed to register with the latter ports, means for adjusting the position of the sleeve, a hollow cylindrical valve rotatably mounted in the sleeve and having the ends thereof set in from the end plates and thereby providing exhaust chambers and supplied further with a pair of inlet ports opening through the wall of the valve and communicating with the interior thereof and a pair of exhaust ports in the nature of slots formed in the wall thereof and communicating continuously with the exhaust chambers, said ports being designed in the rotation of the valve to register with the sleeve ports, a spindlesecured to one end of the valve, said spindle passing through one of the end plates means for rotating the spindle to rotate the valve, a feed pipe extending from the other end of the valve and rotatably mounted in the other of the end plates and a stationary supply pipe communicating continuously with the feed pipe, as and for the purpose specified.

3. The combination with an engine cylinder, of a cylindrical valve casing adjoining the cylinder and communicating through suitable inlet and exhaust ports with the head and crank ends of the cylinder, end plates closing the ends of the valve chamber, a sleeve rotatably mounted in the chamher and fitting with ports designed to register with the latter ports and supplied further and atone end with a rack, a pinion engaging with the rack and carried by a spindle rotatably mounted in the adjoining end plate, a controlling lever carried by the spindle, a hollow cylindrical valve rota-v tably mounted in the sleeve and having the ends thereof set in from the end plates and thereby providing exhaust chambers and supplied further with a pair of inlet ports opening through the wall of the valve and communicating with the interior thereof and a pair of exhaust ports in the nature of slots formed in the wall thereof and communicating continuously with the exhaust chambers, said ports being designed in the rotation of the valve to register with the sleeve ports, a spindle secured to one end of the valve, said spindle passing through one of the end plates, means for rotating the spindle to rotate the valve, a feed pipe extending from the other end of the valve and rotatably mounted in the other of the end plates and a stationary supply pipe communicating continuously with the feed pipe, as and for the purpose specified.

Signed at Vinnipeg this 2nd day of Jan uary, 1914.

CHARLES FREMONT HENRY. In the presence of" G. S. RoxBUReH,

J. M. SorLAY.

Qopiea of thia patent may be obtained for five cents each, by addressing the Commissioner of Patents, Waahiugtom, D. C.

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