US706932A - Valve mechanism for explosive-engines. - Google Patents

Description

No. 706,932; E Patented Aug. 12, 1902.

' R. P. HANSEN.

VALVE MECHANISM FOR EXPLOSIVE ENGINES.

(Application filed vMay 4, 1899.)

(No Model.) I 2 Sheets-S hee.t I.

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No. 706,932. Patented Aug. I2, I902.

R. P. HANSEN.

VALVE MEBHANISM FDR EXPLUSlVE ENGINES.

(Application filed May 4, 1899.) (R0 Model.) 2 Sheets-Sheet 2v INYENTOR unuesses; I 7Z mM i t l 0 m: NORRIS mans co, mo-roumq, wasu'momu, u c

A TTOIINEYS UNITED STATES PATENT OFFICE.

RASMIIS P. HANSEN, on ERINDSLEV soon, DENMARK.

VALVE MECHANISM FOR EXPLOSlVE-ENGINES.

SPECIFICATION formingpart of Letters Patent No. 706,932, dated August 12, 1902. Application tiled May 1899. Serial No. 715,671. (No model.)

To aZZ whom it may concern.-

Beit known that LRAsMUs PEDER HANSEN, asubject of the King of Denmark, and a resident of Erindslev .Sogn, Denmark, have invented certain new and useful Improvements in Valve Mechanism for Explosive-Engines, of which the following is a specification.

My invention relates to a device for moving the valves and regulating thefuel-feed in four-cycle gas and petroleum motors.

My invention is illustrated in the accompanying drawings, in which- Figure 1 is a front viewof the motor-cylinder with the valve-operating mechanism with a partial section through the valvechamber, while Figs. 2 and 3 illustrate two separate positions of the valve -'operating mechanism and of the" regulator.

A is the motor-cylinder, which is closed above by a lid 0.

From the piston of the motor the movement is transmitted in the usual manner by a sliding rod to the crank-shaft. (Not shown.)

On the crank-shaft is keyed an eccentric disk,

(not shown,) to the strap of which the one extremity of the rod on is secured. The other extremity of this rod 0, is connected with-the rod 19, which is guided in N, and at the upper extremity of which is linked a pivoted rod cl, which stands vertically in normal position and is pressed by a spring e-against astationary projection f. A buttonor knob g'is screwed fast on the valve-spindle 7z,.Flg. 3, said knob being provided with two notches g and g Fig. 2. A lever-bar I, having a notch L. on one arm, is pivoted on the stud t and is kept in normal position by the spring Z against the projection 76.

m is another lever-arm pivoted around the stud m and having an arm m directed vertically downward and also provided with a notch m, which serves to catch the arm 2' on the lever-arm I. The lever-arm m is con- Iiected with the arm i of this lever by the springl. I

n is a projectionset on the head g of the valve-spindle, which actuates the lever-arm n, which moves the petroleum-pump 91 Fig. 1. I

The regulator 0, Figs. 2 and 3, is pivoted on the stud o and is weighted at the one arm by a Weight 0', while its other arm possesses a slanting, smooth, and reduced end 0 The regulator is held at its resting position against the detent o by means of a spring 0 The pivot 0 is fixed on the arm 19, which carries besides the detentpin 0 another pin p Fig. 1, on which the spring 0 is fixed. The arm 19 is pivoted around the pin 19, Fig. 1, and is actuated by a projection on the rod 17.

A lever B pivots around the stud r, Fig. 3, and is pressed at itsresting position against the stop 7' by means of the spring a, Fig. 2. On the boss of this pivoted lever is a projection 7 which carries another small pin for the purpose ofpressing against another spring 1", also arranged on the boss of the lever. The lever R has a small notch 7", which lies opposite the pointed extremity 0 of the regulator-arm.

On the pin r,'but behind the-lever R, is a block 5, tapering upwardly, which carries a pin 5 for fastening the spring/r. Thepro jections f, k, and 1- the pivots 1 m and 1, and the spring r" are all secured to a plate M,

arranged on the cylinder A, Fig. 1, while the guide-bearing N for the rod 1) and the petroleum-pump n are fixed on a plate arranged on the block B.

In explanation of the operation of the arrangement the following describes one of the working periods of the motor, which, as usual in this kind of machines, comprises during two revolutions aiilux, compression, ignition, expansion, and eduction. The admissionvalve I, Fig. 1, acts automatically, and as its spring is weaker than the one of the eductionvalve it can be opened by the pressure of the atmosphere during the downward stroke of the piston. The eccentric which moves the eduction-valve stands about ninety degrees ahead of the crank, (calculated according to the rotation direction.) When the piston is moved downward, the eccentric has reached the lowest dead-point place at the middle of the piston-stroke andwill thereafter move upward again during the further downward stroke of the piston. When the piston moves up again after having'reached the lowest dead-center point, the rod 01, which is now also moved upward by the eccentric, must be prevented from striking against the head g,and thereby opening the eductionvalvc. This object is obtained by the rod cl striking on the notch t" of the lever I when the parts are in the position'shown in Fig. 1' and guiding the latter into the position rep-- resented in Fig. 2, where it is held fast in the-lever m by the notch m. In the further operation of the machine the explosion takes place at the uppermost dead-point and the expansion takes place thereafter during the downward stroke of the piston. At the middle of the expansion-stroke the eccentric is again at the lowest dead-point and thereafter proceeds upward. The length of the rods 61 and g is measured in such a manner that the rod dstrikesagainst the notch g in the head 9 at the moment when the piston is at the lowest dead-point. The head is raised again and lifts the rod g, and thereby the eductionvalve K, Fig. l, which now remains open during the whole ed notion-stroke. Simultaneously with the opening of the valve the rod 01 presses upon the arm m of the lever m and raises the same upward, so that the arm 11 is released, whereafter the lever 1 slides back during the-downward slide of the rod d and resumes the position shown in Fig. 1 at the close of the exhaust-stroke. The working period is now accomplished. By the shoulder 'n and the rod 72 the piston of the petroleum-pump receives a downward movement during the opening of the eduction-,

valve, so'that the petroleum is driven upward through the tube n into a vaporizer arranged in the lid of the cylinder. Thepumppiston is guided back by the spring 01 andsimultaneously sucks up petroleum. The regulator actsin such a manner that when the speed of the machine becomes too great it prevents entirely the induction of the fuel into the cylinder. This is accomplished in the following manner: The regulator-spring 0 is arranged in such a manner that the point 0 of the regulator-arm passes by the notch 1" of the lever B, Fig. 2, during the upstroke at normal operation. great, the weight 0", arranged on the one arm of the regulator, will tend in the upstroke to remain in its original position. Thereby the resistance of the spring is overcome and the regulator is turned in such a manner thatits point 0 engages in the notch r and raises the lever B. If this takes place during the compression stroke, Fig. 2, which occurs but rarely, as the'speed of the engine is smaller at that period,'.the block 8 ispressed against the head 9 by the shoulder r and spring 0", and as a consequence the spring will simply yield still more. Should this occur,however,during the latter stroke.

When the speed becomes too the eduction-stroke, the block 8 will engage the notch g and will press the head 9 upward whilethe Valve K is kept open, Fig. 3. Instead of sucking up a charge the piston will now suck up through the opened eductionvalve K the combustion products expelled at At the next eductionstroke the block 8 will be released. As the petroleum-pump is moved by the spindle of the eduction-valve the spindle omits a pistonstroke every time that the machine skips an explosion.

I claim I 1. In at explosive-motor, the combination with the cylinder, the eduction and inlet valves, a rod operated from the crank-shaft of the motor making two rearward reciprocations to'each opening of theeduction-valve, a petroleum-pump, an operating-lever therefor, a head carried by the stem of the eduction-valve, means carried by the head coact-v ing with the lever to operate the same as said head is raised, means carried by said rod for lifting said head, and speed-regulatin g mech anism operated by said reciprocating rod, adapted to coact with said head independent of said means carried by the rod, substantially as described.

2.. The combination in an explosive-motor with the eduction-valve, and stem carrying the same, and a reciprocating rod, of a head secured to the valve-stem, means carried by the reciprocating rod coacting therewith to lift the same to open said valve, means for returning the valve and speedregulating mechanism independent of the means carried by the rod and operated from said rod also adapted to engage said head to prevent the return of the valve,su.bstantially as described.

3. The combination in an explosive-motor, with the eduction-valve and stem carrying the same and the reciprocating rod ofva head carried by said stem, an arm oscillated by the rod, 2. governor-arm pivoted thereto, a second arm adapted to be engaged by the governorarm whereby the same is tilted on one stroke of the piston-rod, and a block yieldingly connected to said arm adapted to coact with the head on the valve-stem, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

V y 'R. P.IIANSEN.'

Witnesses: I

DANIEL SMITH, W. G. RoonER.

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