US605684A - spacke - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

F. W. SPAOKE. GOVERNOR.

Patented June 14, 1898.

WITNESSES: INVENTOH ATTORNEY.

THE Nonlus PETERS co. PucToqJTnQ, wnsumumu, o c.

UNITED STATES P T NT Orr rcn.

FRED W. SPAOKE, oF'iNDIANAPoLIs, INDIANA.

GOVERNOR.

SPECIFICATION, forming part of Letters taint No. 605,684, dated June 14, 1898.

Application filed October 1, i997.

T on whom it may concern; T I Be it known that I, FREDW. SPACVKE, a citi zen of the United States, residing at Indianapolis, in the county of Mariouand State of Indiana, have invented a new and useful Governor, of which the following is a specification. 3 My invention relates to an improvement in governors for steam-engines.

7 There are at the present time many different types of engines, all working under vary}. ing conditions, and it has been found to be practically impossible upto the present time to provide a single type of governor which would successfully govern all types of engines. I The object of my present invention is to produce a governor suited toall types of en-,

gines, a governor idwhich the throw of the valve may be adjusted independently of the throw of the governor-ballsor' other speedcontrolled mechanism, so that for a given radial movement of the governor-balls the Valve-throw may be greater or less, according, to the peculiar conditions resulting from the particular type of engine or from the peculiar I circumstancesunder which the engine may be working.

The further objects of my invention are to provide an improved spring-mountin g for the governor-balls, and an improved connection between said balls and-the supporting-springs, ebri spr n h unbrek the will big-"retained in position, to provide an im proved autoniaticcut-oifin case of thebreak age of the governor-belt, and to provide such other improvements. in the details of construetion as shall be hereinafter described and claimed. p r

The accompanying drawings illustrate my invention.

Figure 1 is a central vertical section thereof. Fig. 2 is a similar view showing the ad justrnent of the valve-throw. Fig. 3 is an elevation of the belt side of the governor. Fig. 4 is a plan on line 4 4, Fig. 3. Fig. 5 is a detailofthe upper end ot' the governor. Fig. 6 is a detail of the ball connection.

In the drawings, 7 indicates the usual valvechamber, in whichis mounted a balance-Valve 8 of the usual construction, the stem 9 of said valve passingupward through cap 10 and gage head 30.

Serial in. 353,724. (No model.)

thestuffing-bOX 11 carried thereby. 3 Secured to or formed integral with cap 10 are two uprights 12 12, and mounted in bearings formed through suitable ears 13, carried by said up- '1fights, is a'transvers'e shaftl4, upon which :is mounted a lever 15. I ;ver 15 engages a head '16, vertically adjustable upon theupper end of valve-stem 9, and

The inner end of lepivoted to the outer end of said lever 15 is a link17, the upper end of which is provided with a cross-bar 18. Fivoted above lever 15 is a lever 19, theinn'er end of. which engages I a head 20,vertically adjustable upon the lower end of a stem 21, the said inner end being of substantially. the same length as the inner end of lever 15.- The outer end of lever 19 is an arc-shaped arm which is substantially concentric with the pivotal point of link 17 when the variousparts are in the positions shown in Fig. l. v

Formed in the upper edge of theouter are- ,shaped arm of lever 19 is a series of notches 22, any one of which is adapted to receive the cross-bar 18 of link 17, the arrangement being such that with the levers 15 and 19 in the position shown in Fig. 1t'. 6., in the normal working positioncross-bar 18 may be placed in any one of notches 22 without affecting the position of the valve 8. The upper ends of uprights 12 are connected by a suitable cross-piece, and secured to this crosspiece is a hollow stem 23, through which the stem 21 is extended. Revolubly' mounted upon the lower end of stem 23 is a gear 24,

which meshes with a gear 25, carried by a shaft 26, supported in suitable bearings 26,

carried by one of the uprights 12. Secured ,to the outer end of shaft 26is a pulley 27. Secured to gear 24 and revoluble therewith around stem 23 is a head 28, which is held in vertical position by means of a collar 28, se-

cured to stem 23. Secured to opposite sides of, head 28 are the lower ends of two springs 29, the upper ends of which are secured to opposite sides of a head 30, which is revoluble and vertically movable upon the upper end of stem 23. Stem 21 is of sufficient length to protrude through stem 23-and en- For thepurpose of holding the upper end of stemi21in engagement with cap .301 mount, upon shaft 14 of lever 15 a spring 31, one end of which engages said lever and the other end of which is secured to a collar 32, provided upon its periphery with a worm-gear 33, which meshes with a suitable worm 3-1, provided on its lower end with a thumb-nut 35, the arrangement being such that the tension of spring 31 may be adjusted to suit the varying conditions under which the governor may be working.

For the purpose of providing an automatic cut-01f I provide the following mechanism: Secured to the outer end of shaft 14 is an arm 36, provided at its outer end with a transverse pin 37. Pivoted upon shaft 26 is an arm 38, which carries at its outer end a weight 39, and pivoted to this arm is a link 40, provided at its lower end with a slot 41, adapted to receive pin 37. Iivoted to weight 39 is an arm -l2, which carries at its outer end an idler 43, adapted to rest upon the governorbelt i4, which passes around pulley 27. Arm

2 may be held in any desired angular position with relation to weight 39 by means of a bolt 45, so that the position of the idler may be adjusted to different positions of the governor-belt, at the same time maintaining the weight 39 in a substantially horizontal position.

In placing the cut-off the weight 39 should be placed substantially in a horizontal line from shaft 26, the arm 42 being swung about its pivot until idler 1L3 engages the governorbelt at. Should the belt 44 break, the weight 39 drops and through the arms 40 and 36 swings lever 15 and closes the valve 8.

Springs 29 may be formed of a single strip of metal; but I prefer to form said springs of two or more strips of thin metal placed one upon the other, thus producing an extremely flexible, but at the same time transverselyrigid, spring.

The governor-balls 46 are secured to springs 29 at a point about midway between the ends thereof, and any desired fastening means may be used. In order, however, to prevent accidents should one of the springs break, I provide the following fastening means for said balls:

Rotatably mounted and 'ertically 1n ovable upon stem 23 is an eye 47, provided with a pair of oppositely-extendin g radial arms 48, each of which extends through one of the springs 29.

Mounted upon each of arms 48 is a nut t9, the head of which lies upon the inside of spring 29 and the stem 50 of which is threaded and extended through said spring. After nut 49 has been placed in position upon arm 48 a collar 51 is secured to the outer end of said arm, the said collar being a suliicient distance from the outer end of stem 50 to allow for an outward movement thereof, but the said collar preventing the removal of the stem from the arm.

The governor-ball is provided with a suitable screw-threaded opening 52, by means of which the said ball may be screwed upon stem In oaeration the *overnor bein rated to run a certain number of revolutions per minute, is properly connected to some revolving part of the engine by means of belt 44:. Crossbar 18 of link l7is then placed in the middle one of notches 22, the arrangement being such that with the link in this position the outer ends of levers 15 and 19 will be substantially the same, so that for a given movement of the stem 21 stem 9 will be moved in the same direction and through the same distance. Suppose now that the engine does not respond quickly enough to sudden changes in load in other words, the governor is not sufliciently sensitive and does not throw the valve a suflicient distance in one direction or the other to give to the engine the proper amount of steam required at that particular moment. This indicates that for a given radial movement of the governor-balls there is not a sufficient movement of the valve. The operator therefore swings link 17 outward, placing cross-bar 18 in one of the notches 22 nearer the end of the outer arm of lever 19, thus increasing the effective length of said outer arm and thereby increasing the throw of the valve for a given movement of the balls. If, on the contrary, the engine shows an inclination to race 1'. a, the governor is too sensitive and throws the valve too far in one direction or the other, so as to more than compensate for the change in load or speed-the operator throws link 17 inward, placing the cross-bar in one of the notches nearer the pivotal point of lever 19, thus decreasing the elleetive length of the outer arm of said lever and thcrebydecreasing the throw of the valve for a given movement of the governor-balls. By this means the operator may adjust the throw of the valve with relation to the constant and normal throw of the governor balls, so as to produce the best results under the peculiar conditions under which the particular engine is working. If itis desired to change slightly the limit of speed of the engine, spring 31 may be tightened or loosened, thereby increasing or decreasing the tension in springs 29.

It is to be noticed that owing to the fact that when the parts are in the position shown in Fig. 1 the link 17 may be thrown into any one of the notches 22 without changing theposition of the valve or the positions of the governor-balls. This position is the normal working position of the partsi. 6., the position reached by the several parts when the engine is running light and at the speed for which the governor has been calibrated. heretore the parts will always be brought to his position when the engine moves at this speed, no matter what may be the relative positions of the parts or the relative movement of the valve.

It often occurs that in some types of engines, such as traction-engines and the like, it is desirable to run the engine without interference by the governor. In such cases the operator merely th-rows link 17 out of en gagement with lever 19, when spring 31 throws Valve8 wide open and maintains it in that position. It is usually the custom for the operator to remove the governor-belt to accomplish this result; but this is of course inconvenient and very bad practice. By my construction the same result may be accomplished very easily and without straining the governor. 4

By the term speed controlled means, used inthe followingclaims, I intend any means which will be given a valve-operating movement by a change of speed of such means. This is to be distinguished from such devices as that shown in United States Patent No. 384, 7 27, in which the valve-operatin g movement is produced by a change of load.

I claim as my invention 1. In a governor, the combination with a valve andspeed-controlled means, of intermediate adjustable connecting mechanism betweensaid valve and said speed-controlled means whereby, when the said parts "are in their normal working positions, the throw of the valve may be made greater or less for any given change of speed of said speed-controlled means without changing the relative positions of the speed-controlled means and valve.

2. In a governor, the combination with a valve and a rotating speed-controlled means, of intermediate adjustable connecting'mechanism between said valve and speed-com trolled means whereby, when the said parts are in their normal working positions, the throw of the valve may be made greater or less for any given change of speed of said speed-controlled means without changing the relative positions of the speed-controlled means and valve.

3. In a governor, the combination with a valve and governor-balls operated by the engine, of intermediate adjustable connecting mechanism between said valve and said governor-balls whereby, when the, said parts are in their normal working positions, the throw of the valve .may be made greater or less for any given change of speed of the engine without altering the relative positions of the governor-balls and valve.

4. In a governor, the combination with the valve and governor-balls, of a lever connected normal working positions, the throw of the valve may be made greater or less for any change of speed of the governor-balls without altering the relative positions of the governorballs and valve.

5. In a governor, the combination with the valve and governor-balls, of a lever having one arm in engagement with the stem of said valve, a second lever, a link carried by the other arm of the first lever and adjustably connected with one arm of the second lever whereby the throwof the valve may be increased or diminished, and a connection between the other arm of the second lever and the govern or-balls,substantially as described.

6. In a governor, the combination with the valve and governor-balls, a lever having one arm adj ustably connected with said valve, a second lever, a link carried by the other arm of the first lever and adjustably connected with one arm of the second lever whereby the throw of the valve may be increased or diminished, a stem adj ust-ably connected to the other end of the second lever, and a connection between said balls and stem, substantially as described.

7. In a governor, the combination with the valve and governor-balls, a lever having one end adj ustably connected with said valve, a second lever, a link carried by the other arm of the first lever and adjustably connected with one arm of the second lever whereby the throw of the valve may be increased or diminished, a stem adj ustably connected to the other end of the second lever, and a spring engaging said first lever in position to open the valve and to hold the stem in engagement with the governor-balls.

8.. In a governor, the combination with the valve and governor-balls, a lever having one end adjustably connected with said valve, a second lever, a link carried by the other arm of the first lever and adjustably connected with one arm of the second lever whereby the throw of the valve may be increased or diminished, a stem adj ustably connected to the other end of the second lever, a spring engaging said first lever in position to open the valve and to hold the stem in engagement with the governor-balls, and means for adjusting the tension of said spring, substan-v tially as and for the purpose set forth.

9. In a governor, the combination with the valve, of a weight, an arm carried by said weight and adjustable thereon, means carried by said arm for engaging the governor-.

belt and sustaining said weight, and intermediate connecting mechanism between said weight and valve whereby, upon the breaking of the belt, the said weight will close the valve.

10. In a governor, the combination with the IIO valve, of a weight, an arm carried by said bysaid shaft, and a link between said arm and weight whereby, upon the breaking of said belt, the said weight will operate to close the valve, substantially as described.

11. In a governor, the combination with the frame thereof, of a spring 29, eye I? provided with an arm 48 extending through said spring, nut -10 mounted upon said arln, weight Alb adapted to engage said nut and to clamp the spring between the weight and nut, and a collar 51 secured to the arm, all combined and arranged to cooperate substantially as and for the purpose set forth.

12. In a governor, the combination with the frame thereof, of a spring 29, eye 47 provided with an arm I8 extending through said sprin g, nut t9 mounted upon said arm, weight ,6 adapted to engage said nut and to clamp the spring between the weight and nut, a collar 51 secured to the arm, a notch formed in the periphery of the weight, and an ear carried by the nut and adapted to be bent down into said notch and thereby lock the Weight upon the nut, substantially as described.

13. In a governor, the combination with the spring 29, of a nut 4-9 provided with a stem 50 extending through said spring, a weight adapted to engage said stem, a notch formed in the weight, and an ear carried by the nut and adapted to be bent down into said notch and thereby lock the weight upon the stem.

FRED \V. SPACKE.

IVitnesses:

ARTHUR M. 11001), FRANK A. FAIILE.

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