US61528A - Jacob fjelber - Google Patents

Description

J; EELBER. GovBNoR. GUT-OFP :FOR STEAM wfmms. No .`61,528.

' Patented Jan,

JACGB FE'lJB-VERY, OF lST. LOU-IS, MISSOURI. .Letters Patent No. 61,528, dated January 29, 1867.

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TO VALL WHOM I [TMAY GONCERN:y

Be it knownthat I, JACOB FELBER, of the city andcounty "of St. Louis, and State of Missourifhave invented a new and useful Improvement in CombinedGovernor and Cut-Oil' for vSteam Engines ;v and I do hereby declare that the following is a full and clear description thereof, referenccbeing had to the accompanying drawings,l and to the lettersof reference marked thereon. i v Thanaturc of-this-inv'ention consists in so constructing a governor and a cut-olf valve that the former will act upon the latter` in such a manner as toproduce the cutting-oil' operation in' variable times and in exact accordancewith the amount of power required, thereby resultingin an immense economy of power-and fuel.

Figure 1- of the drawings is alongitudinal sectional elevation.

Figure 2 is a transverse sectional elevation.

Figure 3 a horizontal. section, taken on the line a; y in iig. 1.

To enable those skilled in' -the art to make and use my improved governor .and cut-01T, I will proceed to describe its construction and operation.

A represents the top plate of asteam chest, and AA! represents the governor platform; Bg is the cut-of valve-chamber, and is in open communication with the steam pipe Bl, and also with the steam chest below the plate A, but not shown. The governor pedestal A2, erected upon its platform A1,-is not materially different from those in common use; neither is the vertical hollow shaft a, or the centrifugal balls al, or their arms a?. The shaft a is tobe driven by means of the cog-wheel a3 on its lower end, and this wheel fromtheshort horizontal shaftra, It will he necessary to use cog-gearing throughout for the purpose olf-transmitting motionfrom the engine-to the governor, as the motion of the governor, owing' to its connection'with the cutoff, must be in exact hermonywith that of the engine that is, the governor must make two revolutions to each strokeof the engine, so it will 'be able to cut oli` ateach opening of an induction port; The vertical shaft C, with the hollow shaftl a, receives its rotating motion fromv its enveloping shaft inI the usual manner. The upper end of this shaftv is connected with the inner or adjacent endsof the arms a2, and these give tp the said shafta vertical rise and fall dependent on the positionof the centrifugal balls. On the lowerendof the shaft `C there is a vertical cam G. The periphery of this cam increases in sizey from top4 to bottom in a spiral form. The general contour of this cam is shown more clearly in a detail ldrawing of it, wherein itis shown that the inclinedplane c, ruiming spirall'y up the periphery ofthe cam, terminates abruptly in the vertical ridge'c, .thus frmingthe face of the cam into two distinct fields, c and c3, the smaller of which, c2, isa cylinder whose radius is -equal to the radius of the cam at its' upper end, and the cylindrical field has a radius equal to theradius of the lower end of the cam. The bent lever D is pivoted at d lto its fulerumD, the latter having for its base some convenent stationary support, as for instance the platform A1.V The lower or vertical arm of this lever is provided 4 with a frictionrroller, d1, which rests against the face o f the cam Cl; J.lhe horizontal arm'of the lever is forked so asto receive the adjusting-nut E of theicut-off valve-rod El. This adjusting-nut has a. groove-in its periphery, into which the pin d2 of thelever enters, so as -to form a connection between these parts, andpermit' the screw to be turned around within the forked' end of the lever, butat the same time to elevate 'or depress that end of the lever, or'of the rod El within the nut, which is relatively equivalent. female-thread, cutvwithin the nut E, receives the male threads of the screw on the rod E" A hand-wheel, E2, on the top'end of the nut, furnishes a ready means of adjustment of these parts, for the purpose hereinafter more fully explained. The valver0d :Eli passes through the stalling-box e, on the top end of the valvechamber B, and within the said valve-chamber it is uttehed to the valve E3, which it is intended to operate.A lThis 'valve is a' hollow cylinder, open at both ends; and placed so as to envelope its seat E4. This seat is acylindrical piece, closed at its upper end,iand having a cylindrical cham'ber within it, which chamber is in open communication with the steam chest below the plate A.. There'are two steam ports el', which, when not closed by the valve E3, admit steam into the chamber within the lseatpiece E". Thetvalve E3 is'placed within its circular chamber B, soas to leave-van annular opening entirely around it for the passage of the steam, which will thereby act upon all sides of it equally, and so the steam is' also permitted to press equally `upon both endsfof the vsaid valve; a perfectlyr balanced ,valve will be the result of this construction. Steam is taken from the boiler through the steam pipe Bl into the annular chamber in B surrounding the valve, and from thence is passed through'the ports el down into the steam chest at every upward motion of the valve E. The circular -form above described for the chamber B and the valve E. is, of course, not absolutely necessary to the proper construction of these parts, but it'is preferredl as being the moet simple and'ineipensive. Se also the words upand down r"inthe foregoing description; are only relative terms, and are not l to beunderstoodas limiting or circums'cribing4 the 'nature of this invention. As has already been mentioned, -the governor is to make 'two revolutions. to' each stroke of the engine, and at each revolution of the governor, the elevated field c of the cam Cl will strike the roller d* of the lever D, and so act upon the said lever as to raise its other end, and witli'it the valve`E3, suiiiciently'touncover the ports e the required amount to, admit the steam necessary to once ll the cylinder. As the field cs Ais largest'at the bottom and decreases regularly toward the top of the cylinder by the inclined plane c, and a's the vertical position of the 'cam 'C1 'is dependent upon the elevation or. depression of the' centrifugal .balls al, and this position of the said balls is-in y l turn dependent upon the speed with which they revolve, and as it furthermore appears in the foregoing descrip tion that the vertical position of the rollord is fixed; therefore it is evident that `when the speed'is the slowest andthe centrifugal balls are down, the drum G1 will'be up, and the largest part ofv the field c will then have a bearing'upon the lever, and consequiantly the portse will remain open the longest; andwlzen the speed of the governor is fastest, the cam Cl will bc do vn to its lowest point, 'and consequently the top, or .smallest portion of the field es, .will then be hearing upon the lever, and the ports el will thereby remain open only a minimum of time. As the area of the vfield c3 is diminished from bottom to top regularly by the inclined plane or spiral' curve c, it is evident thatsa nice'gradat'ion of the cuto' may'thus be arranged, and the steam will always be cut o in the time that will be directly proportionate with the amountof power required."4 `:By screwing up or down the nut E, the valve may be set to uncovermoreA or less 'of the ports el, anda nice'adjustdlent'of the steam admitted to the cylinder, and always proportionate to the amount of power required, will thereby be secured. This is a valuable point in works where more power isA required atA some times than at zothers, As the steam is cut o at each stroke, before., the movemeutof the slidewalve within the Vsteam chest, it is evident there will be no pressureupon the slide-valve during its motion, and one fruitful source of annoyance and expenditure of power willthereby be removed. .Bj-using two of the valves E, the' steam chest and slide-valve might be dispensed with entirely.4 For high speed engines, two cams C1, or a longer one with two curves, might be employed,

so as not to run the governor at too high a speed.

Having described my invention,1what I claim, is` Y 1. The cam C1, when constructed substantially as herein set forth, so as to produce a variable4 cnt-of, 2. I claim the construction and arrangement of the balanced cut-o' valve E- as described.

8. I claim the adjusting nut E,`in combination with -the valve-rod El', for the purpose of regulatingvthe i ,opening of the ports el as herein set forth.

4. I claim the combination and arrangement of the cam Cl, thevlever D, and. the valveE?, substantiallyaa herein set forth.

JACOB FELBER.

Witnesses: v

` S. M. RANDOLPH, M. RANDoLPn,

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