US777295A - Speed-regulator for explosive-engines. - Google Patents

Description

No. 777,295. PATENTED DEC. 13, 1904.

' G'. MARX, JR.

SPEED REGULATOR FOR EXPLOSIIVE ENGINES.

APPLICATION FILED MAR. 3, 1903.

2 SHBETS-BHEBT 1.

N0 MODEL.

ATTORN 5Y5 No. 777,295. PATENTED DEC. 13, 1904.

' G. MARX, JR.

SPEED REGULATOR FOR EXPLOSIVE ENGINES.

APPLICATION FILED MAR. 3, 1903.

2 SHEETS-311E131 2.

NQVMIODEL.

zflmsea MM No. 777,295. Patented. December 13, 1904.

UNITED STATES PATENT OEEIcE.

GEORG MARX, JR, OF NUREMBERG, GERMANY, ASSIGNOR TO THE FlltM OF VEREINIGTE MASOHINENFABRIK AUGSBURG UND MASOHINEN- BAUGESELLSOHAFT NURNBERG A.-G., OF NUREMBERG, GERMANY.

SPEED-REGULATOR FOR EXPLOSlVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 777,295, dated December 13, 1904. Application filed March 3, 1903- Serial No. 145,968. (No model.)

T whom it y (JWWGYW' l ver 6 is pivotally connected with a valve-spin- Be it known that I, GEORG MARX, J r., engidle e in such a way that its axis of rotation neer, asubject of theEmperor of Germany, rewhen the valve is closed coincides with the siding in Nuremberg, in the Empire of Geraxis of rotation 01" the roller-track 20. As

5 many, (whose full postal address is Martin thus the point of rotation of the passive roller- Richterstrasse, Nuremberg, aforesaid) have track is on the same axis as the point at which invented certain new and usefulImprovements when the valve is closed the active roller-lever in Speed-Regulators for Explosive-Engines, engages the valve-spindle, both levers t and of which the following is a specification. w always encounter one another in the same 1 This invention has for its object a releasing position, and this position is independent 01'' distributing-gear for the gas-valve of gas-enthe actual condition of the governor. Oongines working with qualitative regulation. sequently these levers always meet without The object of the invention is to operate the shock if the system has been correctly worked gas-valve by means of a simple eccentric gear, out from one position. The lever a, carry- I5 so that the opening of the valve alters with ing a roller '1', is connected with a governorthe load, while the cut-off of the valve always spindle t, so that the roller-track 10, which takes place ata certain position of the enginerests by means of its steeply-inclined track 8 5 erank that is to say, is unalterable. The on the said roller, assumes a higher or lower time for the opening of the valve is so selectposition, according to the condition of the 20 ed that at the lowest position of the governor governor. The disconnecting mechanism is (corresponding to the biggest loading on the formed of a free-hanging pawl 71!, mounted at engine) it is somewhat in front of the comthe point a, which pawl by means of an in- 7 mencement of the suction-stroke, while it sertion-piece 'm slides on a similar insertionalters with the stroke of the governor, and piece m in the lever Z). The touching-surfaces 5 when the governor is in its highest position of the pieces m are curved on a circle the cencoincides with the cut-off at the end of the ter of which is formed by the pivot (1-. The suctionstroke, so that in this position the gaspawl is provided with a downwarly-extendvalve is not opened. ing projection which carries a steeply-in- Now the present invention endeavors to clined track 0. An eccentric-rod c is also 3 solve the problem of meeting all the requirepivoted on a link J at the point a, which at ments hereinbefore enumerated by the comthe other side is revolubly connected at the bination of a roller-lever system regulated point 0 with the valve-lever Z). The rod is 30 by the action of the governor, and thereby moved up and down in the ordinary mancausing the alteration of the opening-point, ner by means of an eccentric keyed firmly on 35 and a releasing mechanism always snapping the way-shaft 2. This movement causes the off at the same point of time, and thereby steeply-inclined track 0 to travel on its roller maintaining a constant cut-off. g, and thereby releases the lever b from the 5 The invention is shown in the accompanypawl The releasing-roller g in the form ing drawings in vertical section in Figures 1 of construction shown in the drawings is 4 and 2, while Fig. 3 represents the new valvemounted on a projection of the air-buffer casgovernor in its application to an explosiveing a, the air-bufi'er a of which is linked to power engine. the front end of the valve-lever Z) and rests 9 The passive roller-track is formed by a leon a lifting-spring 2', bearing against the botver to, one end of which is pivotally mounted tom of the casing e. 45 in a valve-yoke and its other end, which has The distribution is in the accompanying astceply-inclined track 8, rests on the roller of drawings supposed to be with a closed valve a lever a, regulated by the action of the govand at the moment of the commencement of ernor. The rear end of the active roller-lethe contact of both roller-levers, Fig. 1 showing the lowest and Fig. 2 the highest position of the governor. The distribution shown in Fig. 1 at the lowest position of the governor and with the valve closed is effected in the following manner: In the downward movement of the eccentric-rod the parts Z Z) are moved downward, constantly pressing the pawl 70 downward also, whereby contact is produced between the parts I) and w earlier or later, according to the position of the governor, and thus the lift of the valve commences. The pawl k, after reaching the disengaging-position which remains constant for all positions of the governor, releases the lever 1), whereby the valve closes under the action of its own weight and a valve-closing spring f, while at the same time the partb travels along the part 70. The complete return of the lever b to its initial position is effected by means of the lift-spring 7' and the air-buffer 7L. After the release of the pawl the eccentric-rod e and pawl 73 and link Z continue the movement; but shortly before the highest position is reached the pawl 70 engages, so that the steeply-inclined track 0 again encounters the roller q, and in order to deaden the sound of the roller dropping on the track the respective part of 0 is made resilient, for instance, by the placing thereon of a strip of leather w. The movement can then recommence.

The sliding lever 70 occupies various positions, according to the position of the governor, while the outer end m of the active sliding lever b is constantly moved in the same manner by the contact between the two sliding levers b and w, and therefore also the beginning of the valve motion, occur at varying points of time. Moreover, the stroke of the valve depends at every point upon the respective position of the governor that is to say, not only the point of time when the valve opens but also the stroke of the valve are influenced by the governor.

' The arrangement of valve distribution heremeans of pawl Consequently inbefore described necessitates when the valve is closed the arrangement of the passive and active levers on a uniform axis, so that a lift is obtained free from shock, if it be ascertained for one position. As the air-buffer, in consequence of the time of snapping in of the pawl being the same at all charges, describes the same course, a constant position of the air-suction valve may be maintained and a quiet and uniform closing of the valve attained.

I declare that what I claim is 1. In combination, a valve, a lever 6 connected thereto, a movable fulcrum for the said lever comprising a lever 20, a governor for controlling the position of the said lever w, mechanism for operating the lever 6 arranged to be disengaged therefrom, and means for throwing the said mechanism out of engagement with the said lever b at a certain point of the stroke, substantially as described.

2. In combination with a valve, a leverb pivotally connected thereto, a fulcrum for the said lever comprising a lever w with a pivotsupport therefor, means operating the lever b and means for controlling the position of the lever w, the pivotal points of the levers b and 10 being axially in alinement when the valve is closed.

3. In combination a valve, a lever pivotally connected therewith, pawl is for engaging the lever, said pawl being suspended from a pin a, means for connecting the said pin with the said lever, means for reciprocating the pawl to engage the lever and means for throwing the said pawl out of engagement with thesaid lever, said engaging and said disengaging action occurring at the same points in the stroke of the pawl if substantially as described.

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

GEORG MARX, JR.

WVitnesses:

ANDREAS STIoH,

HENRY ENGELHARD.

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