US466475A - William o - Google Patents

Description

W. o. WEBBBR. STEAM ENGINE GOVERNOR.

Patented Jan. 5, 1892.

A' l F r l v l i 65; ATTORNEYJ.

UNTTED STATES PATENT Trrcn.

YVILLIAM O. VEBBER, OF ERIE, PENNSYLVANIA.

STEAM-ENGINE GOVERNOR.

SPECIFICATION forming partof Letters Patent No. 466,475, dated January 5, 1892. I Applioationiiled June l5, 189]. Serial No. 396,269. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM O. WEBBER, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented certain new and useful Improvements in Steam-Engine Governors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to steam-en gine governors, and particularly to that type of steamengine governors wherein the governing apparatus'is placed in thely-wheel of the engine; and it consists in certain improvements in the construction thereof, as will be hereinafter fully set forth, and pointed out in the claims. A Y

Figure l is a side elevation view of the ywheel containing my improved governor. Fig. 2 is a sectional view taken on the line AX BX, the main spring C not being shown. Fig.

. 3 is a diagram showing the movement of the.

valve-moving crank-pin D.

A represents a ily-wheel having the hub A', with shaft-opening a and the boss A2.

B B are the weight-arms, and B. are'the weights.

C C are the main centripetally-acting springs, which are connected with the weightarms at c.

D yis the eccentric crank-pin with which the valve-rod engages.

lE is the crank-arm carrying the eccentric crank-pin D.

Fis the rock-shaft journaled in the boss A2.

G is the rock-arm connected with the rockshaft F.

H H are links connecting the rock-arm G with the weight-arms B B at h.

It will be seen that as the weight-arms are thrown out or in by the movement of the flywheel the rock-arm G will be vibrated through the connecting-links H H, connecting with said Weight-arms, and that thereby the rockshaft F will be rocked, the crank-arm E will be rocked, and the crank-pin D moved in the are of a circle. This are is marked 2 2. The line l 1, passing through the crank-pin D, represents thelead-line of the governor. The circle 4 represents the eXtreme path of the crank-pin D and the circle 5 the inner path ot' that pin. It will be seen that the journal of theV rock-arm G-that is to say, the rockshaft F-is below or at one side of the center line A BX. Therefore the are 2 2 through which the crank-pin D moves will be nearer to the center line 3 3 at its intersection with the line A B than it will at any other point in its movement. `The crank-pin D is carried toward the line A* BX when the weights B B move outwardly, and vice versa. Hence when the load is put upon the engine and the y-weights move inwardly it will be seen that l(he engine increases its lead, because the center ofV the crank-pin D moves from the line l l and the line3 3 outwardly, while, on the other hand, if the load is decreased and the weights B B fly outwardly, the ,center of the crank-pin will be carried back toward the line l l as it approaches the center line AX-BX, and thereby the lead of the engine will be decreased;

In Fig. l thereis shown a small section Iigure of detail taken on the line C DX, where it will be seen that the arms B are formed with two slots or openings through them, b and b2. The parts C and H, which connect with these weight arms, enter the slot b and the pivot-pins `c and h pass through the slot b2, and the heads of these pins have their bearings on the outer sides of the weight-arms. This brings the bolt of the weight-arms upon the parts moved by them centrally in the arm.

These weight-arms are cast in the form shown and require no finishing before using, except to prepare the journal-opening of the inner end of the arm. The Weights B are cast solid with the arm, but they are added to by cap-weights b', which are bolted to them. The weight of these cap-weights may be varied in order to adjust the governor in degree of speed-as, for example, on the right of Fig. l the cap-weight is shown with 300 marked on it, which indicates that the weight is intended to regulate the engine at three hundred revolutionsper minute.` If it is desired to increase or decrease the speed of the engine, these three hundred weights will be removed and the Weightof proper weight willbe substituted-as, for instance, a weight marked 275 or 325-faccording as wanted. This obviates the necessity of changing the tension IOO twenty-five cap-weights would be substituted for the three hundred, and the engine would run at three hundred and twenty-five revolutions and no change of the tension of the spring C would be required.

What I claim isl. In a steam-engine governor, the combination, with an eccentricaIly-placed valvelnoving cralllcpin, of a crank-arm carrying said pin, which is moved by the action of the governor-weights and is journaled eccentric to the shaft and so far to one side of the center line AX B which cuts the lead-line 1 1 at right angles that when the said crank-arm is moved by the inward movement of the governor-weights the said pin will move away from said line l 1 on the opposite side thereof from the center of motion of said crank-arm and thereby increase the lead of the valve.

2. In a steam-engine governor, the combination, with the centrifugally-acting weightarms and the centripetally-acting springs connected with said weight-arms, of a roel@ arm journaled eccentric to the main shaft and to one side of the center line AX 5X which is at right angles to the lead-line 1 1 and connected to the weight-arms by suitable links, a crank-arm on said rock-shaft, and a crank-pin on said crank-arm for connecting with the valve-rod and which is eccentric to the main shaft.

3. In a steam-engine governor, the combination, with an eccentrically-placed valvelnoving crank-pin, of a crank-arm carrying said pin, a rockshaft carrying said crankarm, which is journaled eccentric to the main shaft and at one side of a center line AX 3x which cuts Lhelead-line l 1 at right angles, a cross-arm on said rock-shaft, weightarms, springs resisting the outward movement of said Weight-arms, and links connecting said Weight-arms with the opposite ends of said crossarm. il

L1. In a steam-engine governor, the combination, with an eccentrically-placed valvemoving cra11k-pin and a 'cranlcarm carrying said pin, of a rock-shaft carrying said crankarm, which is journaled eccentric to the shaft ,and so far to one side of a center line AX B which cuts the lead-line 1 l at right angles that the crank-pin will move outwardly away from the lead-line as it moves away from the line AX BX and therebyincreases the lead of the valve, and weight-arms connected with said rock-shaft so as to rock the same when said weight-arms are moved inwardly or outwardly.

5. .In a steam-engine governor, the combination, with the links II 1I and springs C C and tho pivot-pins c and 7L, of weight-arms having a slot Z) to receive the eye endsof said links and springs and a slot Zat right angles to the slot b to receive the pivot-pins @and 7L.

G. In a steanrengine governor, the combination, with the weights B', of removable and changeable cap-Weights ZJ', which are secured upon the weights B'.

7. In a steam-engine governor, the combi nation,with a weight-arm B and weight B,cast in one piece, of a cap-weight b', detachably secured to said weight.

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

WILLIAM O. WEBBER. IVitnesses:

JNO. K. HALLocK, WM. P. HAYES.

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