US603039A - hegoem - Google Patents

Description

(No Model.)

G. 2 Sheets-Sheet 2.

GOVERNOR. No. 603,039. Patented Apr. 26,1898.

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Inventor.

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UNITED STATES PATENT amp CHARLES O. HEGGEM, OF MASSILLON, OHIO, ASSIGNOR TO THE RUSSELL & 00., OF SAME PLACE.

GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 603,039, dated April 26, 1898.

Application filed May 22,1897. Serial lio.'687,726. (N0 model.)

To all whom it may concern.-

Be it known that 1, CHARLES O. HEGGEM, a citizen of the United States, residing at Massil1on,in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Governors, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention has reference to improvements in steam-engine governors; and the object of my invention is to so construct a device of this kind that it will be capable of opera-tin g with greatersmoothness of action than ordinary governors and will regulate with greater precision the speed of the engine with which it is used in connection. To attain the objects thus set forth, I construct the governor with mechanism that will automatically start the governor-weights, held nor mally by tension-springs in their innermost positions, outwardly before or at the time the engine reaches its maximum speed. This mechanism is particularly desirable in highspeed shaft-governo rs,as it grad ually and uniformly starts the weights outwardly at the proper time, thereby providing a smoothness of action for the governor that is not attainable without it.

My invention consists, therefore, in the novel construction of a governor embodying the mechanism referred to and in the peculiar arrangement and combination of the various governor parts, all as more fully hereinafter described, and shown in the accompanying drawings, in which Figure 1 is a front elevation of the improved governor with the main-eccentric strap and valve-stem removed. Fig. 2 is a similar view of the governor with the main eccentric and the strap of the auxiliary eccentric removed to more clearly show some of the governor parts. Fig. 3 is a sectional view of the governor to the left of the center line through the shaft, taken on line as w of Fig. 1, and to the right of the center line a section on line 1 y of the same figure. Fig. 4 is a detail view of the main eccentric, showing the manner in which the latter is connected to the strap of the auxiliary eccentric; and Fig. 5 is an end elevation of the devices shown in Fig. 4, looking in the direction of the arrow.

In construction the governor comprises a casing A, keyed to the engine-shaft B, and

loosely sleeved upon the latter is the inner or auxiliary eccentric, comprising the eccentric proper, C, carrying a hub D, while ears E and E are arranged upon the hub in proximity to the free end thereof. The mechanism thus described is connected to the casing by the lovers F and F and G and G, the levers being connected to the inner eccentric and to the casing in the usual manner.

H and H are the governor-weights, secured, respectively, to the lever-arms G and G and held normally in their innermost positions by means of the usual tension-springs I and I. The springs thus referred to are secured to the casing bybolts c andb and to the weighted levers by clips 0 d and bolts 9 f. The auxiliary eccentric is further provided with a strap J, loosely sleeved thereon, and the strap in turn is provided with the flat bearing-faces g and h.

The outer or main eccentric, which is attached to and operates the engine-valve, is connected to the governor-casing by means of a pivot-arm K, which is pivotal'ly connected to the inner portion of the periphery of the casing by a pin L. The latter eccentric is provided with two L-shaped extension-pieces M and N, adapted to fit over the strap J in the manner illustrated in Fig. 5. The inwardly-extending portion 2'- of the extensionpiece N bears directly against the bearing, face h of the strap, While a similar portion j upon the extension M is provided with an inclined face it. (Shown in dotted lines in Fig.

4:.) A key or wedge O is driven between the extension M and the face 9, effectively securing the strap to the main eccentric. The 0 usual outer-eccentric strap (not shown in the drawings) is secured to the main eccentric, connecting the latter to the usual valve-stem, (not shown,) which latter in turn connects with the engine-valve and operates the same 9 5 in the ordinary manner.

The governor-weights preferably employed in my improved governor are each formed in two parts arranged upon either side of the lever-arms, as shown in Fig. 2. These half we portions are secured to each other in any suitable manner, and the weights are provided with cushions, such as land m, upon their outer sides and with similar cushions, such as n and 0, upon their inwardly-extending portions, the cushions being arranged within suitable -recesses formed for the'same within theweights,v m M 7 To overcome the tendency of the weights just described to be thrown suddenly away from their normal position at the timethe engine reaches its maximum speed, I employ weight-starting devices, thefnnctions of which areto start the weights outwardly be-' fore orjust as the maximum speed'of the engine is reached, whereby the weights will move uniformly and with perfect smoothness the weight. Two springs are employed, arranged in the weights in the mannerdescribed, the freeends of which hear, when said weights I I are in their innermost positions, against the I ears E and E of the inner eccentric, as plainly vshown in Fig. 2. Thev springs are under their highest tensionwhen the weights are on their inner stops,and in this position exert their maximum pressure toward starting the weights outwardly, I I

From the construction and arrangement of the mechanism thus set forth it will be plainly apparent that an exceedingly simple device is required for starting the weights, which may be easily and quickly applied to any governor of ordinary construction, also that the device is located ,uponthe weight-arm at a:

, point where it is'most effective-namely, in

proximity, to its free end; Moreover, by are ranging the governor mechanismso thatthe weight-startin g device in the form of the auxiliary spring will be between the weight and the 111g upon the auxiliary eccentric said spring will be doubly elfective in its function of resisting the inward movement of the weight-arm, as it acts directly and simultaneously while under compression upon the weight and upon the auxiliary eccentric, tending to move the latter in the direction it would take upon the movement of the weight outwardly.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a governor, the combination with the engine-shaft and a governor-casing fixedly secured thereto, a main and an auxiliary eccentric, lever connections between the latter eccentric and easing, weights carried by the levers, tension -springs normally retaining the weights in their innermost positions, and weight-starting devices, comprising springs interposed between the weights and the auxiliary eccentric, and acting simultaneously upon both, while under compression, for the purpose of setting said weights in motion before, or at the time, the engine reaches its maximum speed.

2. In a governor, the combination with the engine-shaftand the governor-casing fixedly secured thereto, a main eccentric, an auxiliary eccentric provided with ears E E, lever connections between the latter eccentric and the casing, weights carried by the levers, and 1 provided with recesses formed'within'their inner edges adjacent to the ears orlugs, ten-,

sion-springs normally retaining the weights in their innermost positions, and weightstarting devices, comprising coiled springs fixedly secured within the recessed weights and acting, whilennder compression, directly against said weights and against the ears of the auxiliary eccentric, substantially'as described.

3, In a governor, the combination with the engine-shaft and the governor-casing fixedly Y secured thereto, anauxiliary eccentric loosely sleeved upon the shaft outside the casing, a strap, said strap 'looselymounted upon the auxiliary eccentric being provided with flat bearing-faces, g and'h, a'main eccentric having formed integral therewith Tr-shaped extension-pieces M and N, inwardlyextendin g flanges integral with each extension as described, adaptedto. fit over the flat faces of the strap, an inclined face 76 upon one of the flanges, and a keyor wedge for securing the pivotal connection with the casing, an auxiliary eccentric carrying integral therewith a hub D and ears or lugs E andE, and lever connections between the lugs or ears and the casing, weights, recessed in the manner described,carried by the levers, tension-springs, and auxiliary spiral springs housed Within the recessed weights, adapted to act, while under compression, simultaneously against the weights and the lugs of the auxiliary eccentric.

5. In a governor, the combination with an engine-shaft, of a governor-casing fixedly secured thereon, an auxiliary eccentric loosely sleeved upon the shaft, a strap loosely mounted upon the eccentric and provided with flat bearing-faces g and h, a main eccentric having a pivotal connection with the casing and carrying integral therewith T- shaped extensions M and N, inwardly-extending flanges projecting from the extensions as described and adapted to fit over the faces of the strap, and means for securing one of said flanges to one of the faces in the manner described and shown.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES O. HEGGEM.

Witnesses:

JAMES PEACOCK, JEssE J. Prrrs.

strap to the main eccentric, all as described and shown. M I I 7 4c. In a governor, the combination with an engine-shaft, and a governor-casing fixedly secured thereoma main eccentric having a

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