US1084913A - Attachment for centrifugal governors. - Google Patents

Description

W. L. WAYRYNBN. ATTACHMENT FOR CBNTRIFUGAL GOVERNORS. APPLICATION FILED JUNE 9*, 191s.

1,084,913. A Patented Jan. 20, 1914.

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W. L. WAYRYNEN. ATTACHMENT POR GENTRIFUGAL GOVERNORS. APPLICATION FILED JUNE 9I 1913. y

l ,084, 9 1 3. Patented Jan.. 20, 1914.

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Specification of Let-ters Patent.

meenten tramandata Application filed June 9, 1913. VSerial No. 772,654.

To all whom it may concern Be it known that I, WILLIAM L. WAY- ni'NnN, a citizen of the United States, residing at Lake Norden, in the county of Hamlin, State of South Dakota, have invented certain new and useful Improvements in Attachments for Centrifugal 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 centrifugal governors and has for an object to provide a novel driving pulley for the governor, such pulley being so constructed and so connected to the governor stem, that it will instantly control the engine to respond to a quick increase or decrease of load.

It is well known that ordinary centrifugal governors are slow to respond to a quick increase or decrease of the load on the engine for the reason that the momentum will not allow the governor to act as quickly as it should. Therefore the present invention contemplates the provision of a novel tension pulley which will act before the centrifugal force permits ofthe governor acting, to instantlyA enable the engine torespond to a quick increase or decrease of load.

A further driving pulley for centrifugal ygovernors which will have no effect in controlling 'the engine after-the centrifugal governor has adjusted itself to a quick increase or decrease of load, but will only operate at the instant of the quick change in load and before the centrifugal governor has had time to act.

With the above objects in view `the invention consists of certain novel details of construction and combination of parts hereinafter fully described-and claimed, it being understood that various modifications may be made in the minor details of construction within the scope of the ap ended claims.

In the accompanying rawings illustrating this invention -Figure l is a side elevation showing the application of my invention. Fig. 2 is a longitudinal sectional view V through the drive pulley. Fig. 3 is a cross sectional view on the line 3-3 Fig. 2. Fig. 4- is a horizontal sectional view onthe line 4.-4 Fi 1. Y Fig. 5 is a cross sectional view on the line 5-5 Fig. 1. Fig. 6 is a cross sectional view on theline 6-6 Fig. 2. Fig. 7

Objectis to provide a tension is a cross sectional view on the line -T Fig. 1. Fig. 8 is a detail perspective view showing the .rock link and adjacent parts.

As the governor may be run with eithera i belt or gearing or whatever may be found necessary, and as the principle of this invention can be used on any type of centrifugal governor, it is understood that the present disclosure 'of the invention as applied to a belt driven steam throttling centrifugal governor, is only for the purpose of a concrete example of Vthe application-ofV the invention. I

Referring now to the drawings in which like characters vof reference designate similar parts, 10 designates in general a centrifugal governor of the ball type which operates through the instrumentality of a stem 11 to control the engine, the governor being actuated by a shaft 12. This is the ordinary type of governor and forms no part of the present invention.

In carrying out my invention,.I provide a belt pulley 13 which is free to turn on a sleeve 14 that surrounds the driving shaftY 12, the sleeve being equipped with a yoke 1 5, see Fig. 3, which is iixed to the driving shaft by means of a set' screw 16, there being a yielding connection between the ends of this yoke and the pulley constructed in the following manner: To each end of the yoke are secured helical springs 17 which extend in opposite directions and are secured at `the outer ends tothe pulley by means of adjustable clips 18 which Vpermit of the tension of the springsbeing adjusted. .It will now be apparent, that through the instrumentality of these springs the belt pulley 1 3 will drive the governor 10"through the instrumentality of the shaft 12, but in the event of a quick change in load and a correspondjadjust the speed to the load. Forme y on the pulley is a hub 19 which surrounds the sleeve 14 and is formed exteriorly with screw threadsv 20, and turna'bly with and slidably mounted on the sleeve 14 is aclutch sleeve 21 that houses the hub 20 and is formed with screw threads 22 that engage lil with the screw threads of the hub, whereby thereon, this sleeve 21 is connected to thesleeve 14 through the medium of a feather or key 21.

A two piece collar 23 is' seated in a groove 24 inthe clutch sleeve and carries a forked arm 25. An arm 26 is secured to the governor-casing 27 as shownat 28 and a transverse pin 29 is journ'aled in this arm and is connected 'togthe forked arm 25.I A channel iron link 30 is xed to the outer end of this pin and is rocked by the pin when the latter is actuated by the forked arm 25.

A block 31 is slidably confined in the channel of the link-30 and is equipped with a' gudgeon 32 that terminates outside of lthe link in a block 33 which is slidably conned on a rod 34 by means 'of a pair of helical springs 35, whereby as the link 30 is rocked movement is transmitted to the rod 34. The latter is pivotally connected as at 35 to an angular rock link 36 which is pivoted at the elbow to the governor case as at 37 and is terminally connected. to a gudgeon 38 carried by a bushing 39 on the governor stem 11. It is thus evident that the movement transmitted to the rod 30 serves to rock the rock link with a resultant raising or lowering of the governor stem whereby the en ine is controlled independently of the centri gal action of the governor. It will thus be evident that upon sudden movement of the pulley 13 under yielding of its controlling` springs 17 under a quick change in load, the governor stem 11 will be instantly moved to regulate the engine to the load, such movement taking lace before the momentumof the centri gal governor will permit `of the governor itself responding to the chan e in load.

For a justing the block 31 longitudinally of the link 30 an angular rock lever 40 is journaled on the arm 26 one leg of the leverV being connected to an operating link 41, and the other leg having a slot 42 which receives the pin 32.whereby upon movement of the link 41 the block will be moved longi tudinally .in the link 30 which adjustment is necessary in order to have the mechanism operatewhen the direction of rotation is reversed, as in reversible engines, without further adjusting than to move the block 31 on the other side of the pin 29 by means of a link arm 42 which isattached-to the reversing mechanism of the engine.

The operation is as follows: When ,the engine is ,operating under a steady load, the Apulley 13 will actuate thecentrifugal govnotatie ernor in the usual manner. Now if this 'load is thrown olf suddenly, then the engine will at once tend to' race and the governor will of course be run faster, but inertia ,will not allow the 'Weights to be thrown out as fast as the load is thrown oil' so that the engine will take a quick jerk. But this is prevented since the pulley 13 will tend to run ahead of the governor and as above de` scribed when this takes place, the clutch sleeve 21 will be shifted outwardly whereby the forked arm 25 will effect a corresponding movement of the rod 34 with a resultant pull up of the governor stem 11 whereby the steam will be shut od until the centrifugal governor has had time to act and take care of this change in load. `ln the event of a sudden increase in load, the reverse movements of the parts above described will take place to throw on more steam in order to take care of this increase in load `until the centrifugal governor has fhad time to become edective.

What is claimed, is

1. The combination with the stem of a centrifugal governor, of a drive shaft for said governor, aloose drive member having a tension connection with said driveshaft and normally rotating said shaft but being adapted to yield on said shaft upon a sudden change in speed', and means operatively connecting said member to said governor stem whereby yielding of said member oper.-

.ates to instantly move said stem to respond to the change in speed before the momentum of the governorwill permit of the governor acting to respond to such change in s eed.

2. The combination with the stem o a com trifugal governor, of a drive shaft for said governor, a loose driving member on said shaft, a tension 'connection between said member and said shaft, said member normally rotating said shaft butby virtueof said tension connection being movable independently of said shaft upon a quick change in speed, and means connecting said vmember to said governor stem whereby such independent movement is transmitted to said stem to cause the latter to respond to the sudden-'change in speed before the momentum of the governor will permit of the governor acting to respond to the change in load.

3. The combinationwith the stem of a centrifugal governor, of a drive shaft for said governor, a loose drive member havin a tension connection with said shaft an normally rotating said shaft but being adapted to yield'upon said shaft upon av sudden chan e in speed, a clutch sleeve on said shaft havmg a screw thread connection with said member and normally rotated by the latter but upon yielding movement of the latter being shifted longitudinallyy of said shaft, and mechanism operatively connecting said sleeve to said governor stem and weeen r servngtotrensmt the shift' movement of n testimony whereof, I amx my signasai (sleeve to sied stem where y yielding of ture, in the presence of two witnesses. sai rive mem r o erates boinstantly move said stem to respon to the change in speed WILLIAM L' WAYRYNEN before the momentum of the governor will Witnesses:

permit of the governor acting to respond to sAAc sAAcson, such change in load. AUGUST MILLER.

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