US746948A - Governor. - Google Patents

Description

N0; 746,948. PATENTS]? DEC. 15, 1903. 0. L. FUNK. eovmmon.

APPLICATION FILED JAN. 12' 1903.

H0 MODEL. 2 SHEETS-SHEET 1.

Wa -messes PATBNTED DEC. 15, 1903.

C. L. FUNK.-

GOVERNOR.

APPLICATION FILED JAE. 12, 1903.

2 SHEETSSHEET 2.

N0 MODEL.

u. wasumcmvi. b. c.

UNITED STATES Patented December 15, 1903.

CHARLES L. FUNK, OF BUFFALO, NEW YORK.

GOVERNOR.

SPEGIFICATIQN forming part of Letters Patent No. 746,948, dated December 15, 1903. Application filed January 12. 1903. Serial No. 138,622. (No model.)

To all whom, it may concern:

Be it known that I, CHARLES L. FUNK, a citizen of the United States, residing at Buf-' falo, in the county of Erie andState of New York,have invented new and useful Improvements in Governors, of which the following is a specification.

This invention relates to a combined engine governor and reversing mechanism, and more particularly to a governor of the general type known as shaft-governors, in which the operating-eccentric for the cut-0E valve is loose and rotated on its shaft to vary the' throw and point of cut-ofi of the valve.

The governor is applicable to both steam mounted concentric with the carrier-wheeland explosive gas-engines.

One object of the invention is to provide an efticient governor of exceedingly simple and compact construction which, while sensitive, is free from objectionable oscillations.

Another object of the invention is to comblue with the governor a simple, desirable, and eflicient mechanism for reversing the engine. V

In the accompanying drawings, consisting of two sheets, Figure l is a longitudinal sectional elevation through a governor and reversing mechanism embodying the invention. Fig. 2 is a perspective view of the governor looking from the left in Fig. 1, the carrierwheel being broken away to expose the other parts. Fig. 3'is a section through the'movable clutch member and shifting-lever of the reversing mechanism. Fig. isadetailshowing the trip-pin of the reversing mechanism. Fig. 5 is a section through the carrier-wheel in line 5 5, Fig. 1, showing the parts in the position occupied when the valve is at a complete cut-off. Fig. 6 is a similar view with the carriershown by dotted lines and showing the position of the parts when the valve is completely open and the carrier rotating to the right. Fig. 7 is a similar view in line 7 7, Fig. 1, showing the position of the parts when the engine is reversed. Fig. 8 is a fragmentary section through the weight and carrier-wheel in line 88, Fig. 5, looking toward the shaft.

Like letters of reference refer to like parts in the several figures. I

A represents a rotary wheel or carrier for the swinging governor-weight. In some engines the wheel or carrier may be secured directly to and rotate with the crank-shaft of the engine or may be mounted independently of the crank-shaft and driven in anysuitable manner. In the construction shown the carrier is in the form of a gear-wheel mounted loosely .on a stationary shaft B, fixed in suitable bearings in a supporting-frame b and driven by agear-wheel O, secured to the crank or engine shaft 0.

D represents the eccentric for operating the cut-off valve. 61 represents the pitman or rod operated by the eccentric and connecting the latter with the cut-off valve. The eccentric is loosely for instance, as shown in the drawings, on

the shaft B. E representsa weight, which is preferably arranged between the eccentric and carrier and is pivoted and swings on a stud or pin 6, secured eccentrically to the carrier-wheel. In the construction shown in the drawings the weight is of substantially heart shape, though this shape is not essential to theoperation of the governor, and is provided with an elongated slot or opening 6', which is curved concentrically with the pivotpin for the weight and through which the stationary shaft carrying the eccentric passes.

This curved slot permits theweight to swing on its pivot toward and from the shaft B. The weight is also provided with a slot e radial to its pivot-pin. p

F represents a pin, hereinafter termed a reversing-pin, which is mounted to move longitudinally of itself in a bearingfon the eccentric and projects through and slides in the slot 6 in the weight. The reversing-pin isheld from turning in its bearing, and its longitudinal movement is limited by a crosspin f, secured to the reversing-pin and engaging in slots f in the bearingsf. The reversing-pin is provided at its inner end with a head or transverse part f which extends toward the stationary shaft B. The revers lug-pin is normally held outward loyaspring f coiled about the pin between a shoulder or head on the latter and the outer face of the eccentric.

G G represent two collars or barrels which are loosely mounted sidexby side on the hub of the carrier-wheel and respectively inclose IOC coiled springs g g. One end of each spring is secured to its barrel, and the other end of the spring is secured to the hub of the carrier-wheel. The spring-barrels are thus carried with the wheel through the medium of their springs, but are capable of rotary movement relative to the carrier-wheel against the action of their springs. The springs are oppositely arranged, so that they act to tu ru the barrels in opposite directions. The springbarrels are respectively provided with arms H H, which in the normal position of the parts (shown in Figs. 6 and 7) extend in opposite directions outwardly from the barrels in the path of the inner end of the reversingpin carried by the eccentric, so that the latter is adapted to engage with and press against one or the other of said arms. The barrel G is provided with two stop projectionsj, adapted to cooperate with a short stop pin or projection is, extending from the carrier-wheel between the stops j, and the barrel G is provided with similar stops 7', adapted to cooperate with a long stop-pin 7t, projecting from the carrier-wheel. The stop-pin k on the carrier-wheel does not extend sufficiently far to engage the stopsjon the barrel G. The cooperating stops on the barrels and carrierwheel limit the rotation of the barrels relative to the carrier. Any othersuitable means for this purpose may be employed. Each of the arms H H of the barrels is provided with an abrupt face and an inclined or beveled face h at its outer end. The beveled faces are oppositely inclined. When the head on the inner end of the reversing-pin engages the inclined face of either arm, it rides on said face and passes the arm.

When the engine is running in one direction and the carrier rotating to the right, as shown in Fig. 6, the reversing-pin engages the abrupt face of the arm H, and when the engineis reversed and the carrier rotating in the opposite direction, as shown in Fig. 7, it is necessary to disengage the reversing-pin from the arm H, shift the eccentric, and cause the pin to engage the arm- H. The mechanism tor thus operating the reversing-pin and shifting the eccentric to reverse the engine is preferably constructed as follows, (see Figs. 1, 3, and 4:) M represents a collar which is movable longitudinally on the extended hub of the eccentric and is splined thereto, so as to rotate with the eccentric. The collar is normally held outward or away from the eccentric by a spring m, coiled about the hub of the eccentric between the eccentric and the inner end of the sliding collar. which is pivoted at its inner end to the slidecollar at or near its inner end and has connected to its outer end one end of a spring n, the otherend of which is connected tothe slidecollaratornearitsouterend. Thisspringacts to pull the outer end of the radial arm away from the reversing-pin. The outer end of the radial arm is also connected to the outer N is a radial arm end of the slide-collar by a toggle-joint composed of links 0 0, pivoted, respectively, at their outer ends to the arm and collar and at theirinner ends to each other. The adjacent ends of' the toggle-links are so fashionedfor instance, by rounding the inner side of one or both links, while the other side is left square-that the joint can bend or break outwardly only. P represents a trippin which is secured to the eccentric with its outer end passing through a hole in the radial arm N, carried by the slide-collar. The outer end of the trip-pin is provided with a head or lateral projection p, adapted to strike against the outer face of the radial arm. The action of these parts is as follows: When the slide-collar is moved inwardly or toward the eccentric, the toggle-joint holds the radial arm rigid, so that when it engages the reversing-pin the latter will be moved inwardly. When the collar has been moved far enough for the inner end'of the reversing-pin to disengage the spring-barrel arm, against which it bears, the trip-pin strikes the knuckle of the togglejoint and breaks ,or bends the latter, allowing the spring n to pull the arm N away from the reversing-pin, so as to permit the latter to be forced outwardly by its spring f When the slidecollar is again moved outwardly by its spring m, the head or projection on the end of the trip-pin engages the outer face of the radial arm and holds the latter from movement, while the slide-collar continues its outward movement, and the toggle-joint is straightened and locked, thereby holding the radial arm rigid to again engage the reversing-pin. A rigid arm or flange could be employed in place of the pivoted arm N and its operating parts; but the latter is deemed preferable, as the reversing-pin is thereby released immediately after it has disengaged the barrel-arm.

Q represents a movable clutch member which is loose and capable of sliding and turning on the stationary shaft B. The clutch member is provided with an annular portion q, adapted to engage and move the slide-collar M, and with an internal conical clutch-face g, which is adapted to engage a cooperating external conical clutch-face g on the outer end of the eccentric hub after the slide-collar M has been moved inwardly far enough to operate the reversing-pin. The movable clutch member is driven in the same direction as the carrier-wheel and at a somewhat greater speed by any suitable means. As shown in the drawings, the clutch member is provided with gear-teeth 1', which mesh with a gear-wheel R, secured to the crank-shaft c.

S represents a shifting lever or device for the movable clutch member. This lever is pivoted on any suitable part of the stationary frame and is provided with a forked end having studs entering an annular groove sin the movable clutch member. Any othersuitable means for shifting the clutch member may be employed. I

The operation of the governor and reversing mechanism is as follows: Assuming the parts to be in the position indicated in Fig. 6 and the carrier-wheel rotating in the direction indicated by the arrow in said figure, or from left to right,the pivoted weight through the medium of the reversing-pin carries the eccentric around with the carrier-wheel and as the speed of the latter increases tends to advance or turn the eccentric around on its shaft. -This movement of the weight is opposed by the spring-barrel. G, the arm H of which is engaged by the reversing-pin, said barrel being turned with the eccentric against the action of its spring. When load is placed on the engine and the speed of the latter decreases, the tendency of the weight to swing inwardly toward the shaft is lessened and the weight is moved outwardly or away from the shaft by the spring-barrel, thus shifting the eccentric in the opposite direction relative to the shaft and shifting the valve to make a later cut-0E. When it is desired to reverse the engine, the movable clutch memher is thrown inwardly by'its operating-lever, so as to press the reversing-pin F inwardly and disengage its inner end from the arm H of the springbarrel G in the manner described. The reversing'pin is released and thrown outwardly by its spring when it has disengaged the arm H in the manner described, so as to be in the path of the arm H of the barrel G. By continuing the inward movement of the movable clutch member the conical face of the latter frictionally engages the conical face on the hub of the eccentric, and as the clutch member is rotated in the same direction and at a greater speed than the carrier wheel the eccentric is shifted from the position shown in Fig. 6 around to the position shown in Fig. 7. The beveled face on the end of the arm H permits the reversing-pin to ride over said arm, and when the carrierwheel is reversed with the reversed movement of the engine the reversingpin engages the abrupt face of thearm H on the side shown in Fig. 7. The governorweight now acts in a similar manner, only in a reverse direction on the eccentric. When the weight is thrown over to the position shown in Fig. 7, the end of its curved slot e strikes the stationary shaft B, thereby breaking the frictional engagement between the clutch member and eccentric. In reversing the eccentric is carried by the weight past the intermediate or complete cut-off position. (Shown in Fig. 5.)

I claim as my invention 1. The combination of a rotary carrier, an eccentric loosely mounted, a weight pivoted eccentrically to said carrier and connected to said eccentric to move the latter, a spring arranged to resist the movement of said weight in one direction, a second spring arranged to resist the movement of the weight in the opposite direction, and means for operatively connecting either of said springs separately with said Weight, substantially as set forth.

2. The combination of a rotary carrier, an eccentric loosely mounted, a weight pivoted eccentrically to said carrier, a device connecting said eccentric and said weight, a spring connected to said carrier and adapted to resist the movement of said weight when said carrier moves in one direction, asecond spring connected to said carrier and adapted to resist the movement of said weight when the carrier moves in the opposite direction, and means for operatively connecting either of said springs to said device connecting the eccentric and the weight, substantially as set forth.

3. The combination of a rotary carrier, an eccentric loosely mounted, a Weight arranged between said eccentric and said carrier and pivotally connected eccentrically to the latter, a pin secured to said eccentric and passing through a slot in said weight, a spring connected to said carrier, and means connected to said spring and engaging said pin, substantially as set forth.

4. The combination of a rotary carrier, an

eccentric loosely mounted, a weight pivoted eccentrically to said carrier and arranged between the latter and said eccentric, a pin se-' cured to said eccentric and passing through a slot in said weight, a barrel arranged concentrically with said carrier and provided with an arm bearing against said pin, and a spring connecting said barrel and said car rier, substantially as set forth.

5. The combination of a rotary carrier, an eccentric loosely mounted, a weight pivoted eccentrically to said carrier, a pin secured to said eccentric and engaging in a slot in said weight, springs connected to said carrier, and means for connecting said pin to either of said springs, substantially as set forth.

6. The combination of a rotary carrier, an eccentric loosely mounted, a weight pivoted eccentrically to said carrier, a pin carried by said eccentric and engaging in a slot in said weight, means for moving said pin longitudinally, springs connected to said carrier, and means for connecting said pin to either of said springs, substantially .as set forth.

7. The combination of a rotary carrier, an eccentric loosely mounted, a weight pivoted eccentrically to said carrier, a pin carried by said eccentric and engaging in a slot in said weight, two coiled springs arranged concentrically relative to said carrier and connected thereto, and means for connecting said pin and either of said springs, substantially as set forth.

8. The combination of a rotary carrier, an eccentric loosely mounted, a weight pivoted eccentrically to said carrier, a pin connected to said eccentric and engaging in a slot in said weight, two barrels arranged concentrically relative to said carrier, a spring connecting each barrel to said carrier, and means for connecting said pin to either of said barrels, substantially as set forth.

9. The combination of a rotary carrier, an eccentric loosely mounted, a weight pivoted eccentrically to said carrier, a pin secured to said eccentric and engaging in a slot in said weight, two springs connected to said carrier, means for connecting said pin-with either of said springs, and means for rotating said eccentric at a speed greater than the speed of the carrier, substantially as set forth. 7

10. The combination of a rotary carrier, an eccentric loosely mounted, a Weight pivoted eccentrically to said carrier, a pin movably connected to said eccentric, and engagingin a slot in-said weight, two springs connected CHARLES L. FUNK.

Witnesses:

CLAUDIA M. BENTLEY, JNo. J. BONNER.

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