US187017A - Improvement in governors - Google Patents

Description

' known.

'raras UNITED JUNIUS JUDSON, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN eovERnoRs.

Specitication forming part of Letters Patent No. 187,0ii', dated February 6, 1877; application tiled June 26, 1876.

To all whom 'it may concern:

Be it known that I, JUNiUs JUDsoN, of thek city of Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Improvement in Governor-Valves; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the accom panying drawings, in which- Figure l is an elevation of a governorvalve provided with my improvement. Fig. 2 is a section of the attachment which forms the subject of my invention. Fig. 3 is a perspective view of the lever and its swivelbearing.

This invention is an improvement on what is known as the Judson governor.77 lIt relates to an attachment that bears upward against the valve-rod, and counter to the action of the balls when ruiming, the object being to steady The valve against vibrations.' Various devices forthis purpose are now The most common consists of a lever with a weight sliding on the outer end. Another consists of a lever with a spring, producing upward pressure on the rod. I therefore disclaim the broad principle herein described; but-my invention consists in the y special construction and arrangement of the attachment, whereby it is easily applied and removed, is cheap, and .effective in action.

' A represents the valve-rod of an ordinary Judson governor. B B are the balls, connected with the rod so as to force the latter down to close the valve under centrifugal action. The rod is preferably made in two parts, pivoted together, as shown at c, Fig. 2. C is a cylinder or case, attached on top the globe by the ordinary bolt D. This bolt has a hole, b, drilled in its top, in which rests and turns the journal c of a swivel-bearing, E. G is a lever, resting in the bearing E, its front end being forked, as shown, at e, and resting under the enlarged end a, of the valve-rod, while its rear end extends outward over the case C, and has hooked over it the loop d of the screwrod H. This rod passes down through vthe case, and is threaded at its lower end, to receive the nutf. On top the nut, and within the case, is a shouldered slide, g, which rests on the rod, and on this slide is acoiled spring, h, which has its bearing at the top against a shoulder, k, of the case.

By turning the nutj' up or down, it will be seen that the power of the spring will be increasedl or lessened, and its tension upon the lever will be correspondingly changed; consequently the upward pressure of the lever against the valve-rod, and counter to the balls, may be adjusted as desired.

The swivel-bearing E has a knife-edge, l, and the lever G has a corresponding notch, fm, the one fitting loosely over the other, and forming thefulcrum of the lever without the use of the pivot. The bearing is thereby more sensitive, and the parts can be separated by simply lifting the lever off.

Instead of a knife-edge, a pivot or other joint might be used without affecting the operation of the swivel-head or the other partsv composing the attaclnnent.

One advantage of my invention consists of the bearing E, swiveled into the top of the clamping-screw D, by which means, when the screw is turned down tight in place to clamp the ilanges, the swivel may be adjusted to position to prevent binding of the lever, by simply turning its journal in the socket of the screw-head. If the bearing were solid with the screw, it would not always come to the right position to allow the lever to be applied. Another feature consists of the arrangement of the screw-rod H, nut f, hollow slide g, and the spring h, by which means the tension of the spring is regulated. These parts are constructed so as all to rest loosely within the case, the nut projecting below, so as to be easily reached. They are all disconnected from the case by unhooking the eye from the lever and turning the nut oli, when the rod H is drawn up through the top, and the other parts fall through the bottom.

The attachment above described serves ,as aspeeder to the engine. With a stiff spring the tension can be so increased as to counteract the motion of the balls from thirty to forty per cent. This is desirable under some circumstances. The constant counteraction of the spring to the balls prevents, in a great degree, the vibration or jumping of the engine, produced by the varying action of the ball under motion, particularly when the engine is running` light.

I do not claim, broadly, a lever and spring for producing upward pressure on the valverod, counter to the balls, as I am aware that the same is not new.

What I claim herein as new is 1. The attachment for governor-valves, consisting of the' lever G, screw D, swivel-bearing E, and case C, provided with the rod H, slide g, nut f, and spring h, the whole combined and arranged to operate in the manner and for the purpose specified.

2. The combination, with thelever G, screw D, and valve-rod A, of the swivel-bearing E, constructed and arranged to operate as and for the purpose specified.

3. The combination, with the lever G, of the screw-rod H, provided with a loop, d, fitting over the end of a lever, a hollow slide, g, resting upon the screw-rod, a nut,f, resting below the slide, and a spring, h, resting between the slide and the top of the case, the whole forming a device for regulating the upward pressure of the lever against the valve-rod, as'herein described.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

.TUNIUS JUDSON. Witnesses:

EDWIN SCOTT, R. F. OsGooD.

Images