US92051A - Improvement in steam-engine governors - Google Patents

Description

ducted tat WILLIAM H. HOWLAND, OF SAN FRANCISCQ'CALIFORNIA.

Letters Pate/nt No. 92,051, lated J'zmc 29, 71869.

IMPROVEMENT IN STEAM-ENGINE GOVERNORS.

The Schedule referred to in these Letters Pateut'a'nd making part of the same.

To all whom tt may concern:

Be it known4that I, WILLIAM H. HOWLAND, of

the city and county of San Francisco, State of Califoi'nia, have invented an Improved Governor; and I 'do hereby declare the following description and accompanying drawings are sufcieut to enable any person skilled in the art or science to which it most nearly appeltains, to make and use my said invention or improvements without further invention or experiment.

My invention relates to governors, or regulators, and more especially to that `classoi quick-running governors used for steam-engines, lby which great delicacy is attained in regulating the amountof steam admitted to the cylinders; and- It consists of two or more light curved springs, which are pivoted at one end to a loosely-moving sleeve, or collar, by which the valve-stem is operated, and which are fastened at the other end to the spindle or disk, from which they receive their rotary motion'.

The weights consist of short cylinders, with conical ends, placed'withiu, the springs, and having their cones formed at such an angle, that when in place they bear against and supporteach other. Y

`The weights are nuattached, and are kept in place by means of grooves turnedat their middle, andin which the springs rest, so that as they aretlirownont or drawn in vby the varying speed, the weights change their positions, rising or falling slightly o'n the springs.

llhe whole of Athese parts areencased, and the upper part of the case serves to support the stern, so that the hollow spindle need not be continued to the top, as in ther governors.

Referring to the accompanying drawings and letters of referencefor a more complete explanation of my invention- Figure 1 is a side sectional elevation.

Figure 2 is a plan, showing the position of the weights.

Similar letters of reference in each of the figures indicate like parts.

A is a containing-case, having a spindle, B, extending from the bottom down through the standard C, by which it is steadied and supported.

The bevel-gear wheels D give motion to the governolu Within the case A, three light, curved steel springs,

a a a, are fastened iirmly to the bottom, at c, and at the top are pivoted to the. sleeve, or collar E, so that as the springs are spread apart by centrifugal motion,

' and the collar is thus drawn down, the springs move about the pins e, and relieve them of the strain which would in time break them if they Were fastened rigidly.

XVithin the springs a, the weights E F F are placed loosely, being kept in place by ya groove, d, which is turned hear the ceutreof each weight, and in whichA the spring rests.

The ends G of these weights are made conical, and of such an angle, that when the three are in place,A v

they bear against and support each other without any other fastening.- Y

When the governor is not in motion,'the weights settle downslightly into the curve of the springs, and whenrit is in motionthey rise, so as to rest in theI largest diametencaused by the centrifugal motion, and always adjust themselves to any changes that may occur.

The valvestem H passes through the spindle B, and also through the sleeve, or 'collar E, and is lengthened or shortened by means'of the lnuts t t.,

A cap, I, is screwed on the top of .the collar E, cov# erin'g the stem H, and having an oil-cup, fm, at the topf through which the stem can he kept lubricated.

The valve-stem does not turn, but is moved up or down by the rising and falling ofthe lcollar E.

' `The springs may be constructed -very cheaply,and

are easily replaced when necessary.

The case A protects Athe working-parts from dust and observation, and serves to support the upper part of the stem 1I and the collar E, so that the'long hollow spindle is unnecessary, and finally, by its weight, steadies the motion of the governor, acting as a ily-` wheel.

Having thus described my invention,

What I claim as new, and desire to secure by Iletters Patent, is Y 1.` In combination with the vspringsa, the weights F, when constructed and arranged substantially as herein set forth.

2. In combination with the springs and weights above claimed, the case A, provided with the sliding collar E, containing the valve-stem H, substantially as described.

3. In combination with the collar E, the adjustingnuts t t', cap I, and cup m, substantially as described.

In witness whereof, I have hereunto set my handv and seal.

- WILLIAM H. HOWLAND. [n. s]

Witnesses:

WLLLIAM STANIFORTH, Geo. H. STRONG.

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