US188876A - Improvement in governors - Google Patents

Description

ZShyets-Sheetl. F. W. DURHAM & H. HOWSE.

GOVERNOR. No. 188,876. Patented March 27,1877.

Hen ry Hows e N-PETHis, PRDTO-LITNOGRAPHER, WASHINGTON. D 0,

Frederick Dur7cano.

Jhuenifo 71s ZSheets-Sheet 2. F. W. DURHAM & H. HOWSE.

GOVERNOR.

No.188,876, Patented March 27,1877.

lit-e347;

3 e OZZ m y NPETERS, PHOTO-LITHDGRAPHER. WASHINGTON, D c,

. Tolull whom it may concern; I ii fPA'rE- 'r OFFICE.

FR ERIOKYW. DURHAM :ANDZQHENLRY HOWSE, or HOMERTON, ENGLAND.

" IMPROVEM Ian-r IN GOVERNORS.

Specification forming att r Letters-Patent N0, 1 88,8176, dated March 27, 1877'; application tiled I February 6, e77.

Be itknownthat wdFREn RIcK witmm; DUBHAMand HENRY HoWsE, both of Homer-I ton, "county-of Middlescx,England, haveim 1 rented an Improved Apparatus for Governing and Indicating the Speed of Motor-E11 .gines; and doyhereby decl'arefthat the following description, taken'in connectionwith the accompanying drawings, hereinafter referred to, forms'a fulland exact specification of the same, wherein wehave set forth the, nature and principles-of our said improvement, by .which'our invention"mayv be distinguished from others of a.'similar fclass,together with suchlpartsas we"claimand desire to secure by Letters Patentthatis to say:

Our invention relates to improved apparatus for governing thefspeed of motor-engines, wherein the controlling effect is obtained by the'jvaryingresistance due to the varyingspeed of rotation of vanes revolving in a"liq-- .uid, causing motion, in one' direction or the other, to beimparted toa spindle acted on by a spring, and connected by a lever to the-supply-valve, or frictiOn-brakeQor other mechan ism that controlsthe speedof the motor.

The construction of such apparatus will be readily understoodon reference to the accompanying drawings, in which-5 t Figure 1 shows aside elevation .ofourbefore-described improved governor. Fig. 2

shows a plan Fig. 3, a longitudinal section, and Fig. 4 an end-view. i

1- V In thejclpsed; casing A, filled with liquid, is

contained a spindle, B, having vanes G, which,

in revolving in the liqu t resistance to the rotation of the spindle,'--'such resistance varying with the speed'ofrotation. Un'the;

upper'endof the spindle is fixed a bevel-wheel,

D, in'gea'r withanotheribevel-wheel, E',-on

the short tubular 'sleeve,F,carriedby the E, on its other'end. Through the sleeve F passes a'shaft, H, on' the end of which is fixed a block, H, carrying two bevel-wheels, I I, in

gearwith the wheel E,-qand wi th another wheel, K ona shaft, K, to which rotary mo tionisimp'arted through the pulley K from The inner end of this shaft is made to run loose in the block H. The other end of the shaft. H is carried in a bracket, G,

and has fixed thereon a small pulley, L, on which is coiled one end of a cord or chain, M,

thejother end of which is drawn downward by the helical spring N inside the casing N, fixed to A. The shaft H has also fixed upon it a notched disk, 0, in the notches of which engages the spring-catch P of a lever, P, loose onthe spindle, and connected by a rod, Q, to the throttle-valve or other controlling mechanism of the motor-engine.

From the above-described arrangement it .vvill "be seen that it rotary motion be imparted to the spindle B and vanes 0 from the shaft K through the bevel-gearing, the resistance vanes O, whereupon. the shaft H will become stationary. Assuming this to take place when the normal speed of the motor-engine is attained, it will be seen that on an increase of speed taking place the increased resistance of the vanes will again cause the shaft H, and with it the disk 0 and lever P, to turn somewhat against the action of the spring N, thus causing the rod Q to actuate the throttle-valve, so as to reduce the speed of the engine. If,

.on the other hand, the speed of the engine falls below that required, then the decreased resistance offered by the vanes will allow the spring N to turnthe shaft H in the contrary direction, whereby the rod Q will be 111 do to open the throttle-valve to a greater extent.

It will be evident that in place of the arrangement of bevel-gears, E I I K described for imparting the partial rotary motion to the shaft H through the increase or decrease of resistance of the vanes, any other well-known contrivance, such as sun and planet wheel motion, may be used, the sun-wheel being attached to the shaft K, the planet-wheel to an arm on the shaft H, and an internal wheel surrounding the two, and gearing with the planet-wheel, being connected "to the tubular sleeve F.

In order to increase the resistance of the fluid to the rotation of the vanes, it is preferred to provide in the casing fixed vanes O, which prevent the entire body of the liquid from partaking of the rotary motion. Should it be desired to alter the normal speed of the engine this is effected by withdrawing the .which the lever has to be moved for working at a certain normal speed, the lever being provided with an index, P, for this purpose.

The apparatus may also be made to indicate the actual speed of the engine at any moment by providing at any point of the circumferenee of the disk 0 an index, 0 projecting over a graduated are, 0 fixed near the circumference of the disk, so that as the disk turns, as before described, when the speed increases or diminishes. it, (the index,) in moving over the scale, will indicate the number of revolutions corresponding to the position assumed; or the scale may be formed on the disk and the index be fixed at the side.

Having thus described, the nature of our invention, and in what manner thesame is to be performed, weclaim- -m Y 1 a 1. In apparatus forgoverning the speed of i i prime movers, the vanes 0 operating in combination with the shaftsF H,'toothed gearing E E I I K, springN and lever I substan? tially as herein described.

2. 1n combinatiouwithx'the vanes O, operating withthe shaftsEH,toothed gearing E p E I I K, spring N, and lever P, the toothed disk 0, fixed on the shaftflH, and operating in combination with the lever? and catch P substantially as and'forthe purposes specified. f I

3. In combination "with vanes 0, operating a with the shafts F H,. toothed gearing E HI I K, spring N, and:lever;1?,"the index 0 on the disk 0, operating in combination with the scale 0, for indicating.thespeed oftheprime 1 mover, substantially as herein. described. p

In testimony whereofwe have signed [our 1 names to this specification iii the presence of two subscribing witnesscslthis 19th day of H January, 1877. '2 y FREDERICK YDURHA I g- HENRY EOWSE. J 1

. Witnesses:

Cass. D. ABEL, l J NO. P. M; MrL msn.

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