US167885A - Improvement in governors - Google Patents

Description

Governor. No. 167,835 Paxenxedsgpnzigla.

N. PETERS. PHOTO LITHOGHAPHER, WASHINGTON, D. CA

' consists of two side plates, b b1.

UNITED STATES PATENT OFFICE.

JACOB FELBEP., OF sT. LOUIS, MISSOURI.

IMPROVEMENT IN eovERNoRs.l

Specification forming part of Letters Patent No. 167,885, dated September 2.1, 1875; application filed' June 2, 1875.

To all whom it may concern:

Be it known that I, JACOB FELBER, of St. Louis, in the county of St. Louisv and State of Missouri, have invented an Improved Governor Cut-Oft" for Steam-Engines, of which the following is a specification:

The object of my invention is to form an improved governor cut-off by which the point of cutting off the steam is made automatical- 1y variable to suit the requirements of the machinery driven by the engine.

My invention consistsin the improved construction and combination of the cut off valves, and their novel eccentric Vattachment to the governor, to achieve the above object, with advantages of imparting a uniform velocity to the engine, a saving of steam, and consequent utilization of fuel and cost, all of which will now more fully appear.

Of the drawing, Figure lis a top plan, showing my improved cut-OE valves and manner of connection with the governor. Fig. 2 is a side elevation, showing principally eccentrics and governor, and hidden parts thereof in dotted lines. Fig. 3 is a top plan, showing my single cut-off valve and connection with the same governor of Figs. 1 and 2.

The governor is mounted upon the iiy-wheel shaft A, so that the number of its revolutions corresponds to that of the engine. Goncentric Onthe shaft A is the housing B. This housing (See Figs. 1 and 3.) The plate b I form to have an eccentric shoulder or bearing, b2. (See dotted lines, Fig. 2.) The plate b1 has an opening correspondin g to the eccentric shoulder b2, and said plate is properly bolted to that of b, thus completing the housing B. In the housing are contained the parts that by centrifugal force control the cut-off valves, and said parts are as follows: G is an eccentric, itting in the opening of the plate b1, and turning in the eccentric shoulder b2 of the housing. (See Fig. 2.) Forming part of C is the further eccentric C', made' to project out of the housing, (see Figs l and 3,) and which connects to the cut- Oli' valve, as will hereinafter appear. The eccentric C has its arms c c1 projecting through the open parts of the eccentric shoulder b2, and also out at top and below of the housing B, and to said arms are secured the connecting arms 'c2 c3 in opposite directions, which further are pivoted to each end of the levers D D1. (See Fig. 2.) The levers have their fulcrum at el d1, and when inert are in inclined position, and carry at their lower ends the balls D2 D3. rlhese balls are adjustable, so that they can beset and secured in varying positions on the levers. Further, said balllevers are connected to springs d2 d3, which materially increase the sensitiveness of the governor. The spring d2 has one end secured to the top of -the shoulder b2, while its opposite end is journaled by a connecting-arm, d4, to near the lever-fulcrum. (See Fig. 2.) 'Ilhe other spring, d3, is similarly secured by connecting-arm d5, but in vice versa position. (See Fig. 2.) It is plain, therefore, that the centrifugal action taking place causes the balls to recede from the center and carry the levers and arm 4connections with the eccentric C with them, and, in so doing, vary the angle of the eccentric C', this motion of the yballs to and from the center depending upon the velocity with which the engine moves, varying their position on increase of speed, and, consequently, also the position of the eccentric C accordingly. The centrifugal action is thus made to act upon and control an inlet-valve, F, by its eccentric rod attachment F with the eccentric C. (See figures.) The valve F is a slide-valve, which I form to have one or more steam-ports, f f1 f2, at one end, being dupli cated with the same ports at its opposite end, as shown in Fig. 1. I form the ports f j f2, &c., to be small, their number being determined according to the size of the engine. These ports being small, and one or more, enables the governor to act in a most decisive and certain manner, the centrifugal action operating with less movement, and, consequently, more direct and at the required times. Alongside of the valve F I arrange a further slide-valve, Gr. This valvehas similar ports gg1 g2, (correspondingto those ofF,) also duplicated at its opposite end. (See Fig. 1.) Further, I form the valve Gr to control the main ports g3 g4 of the cylinder, (see Fig. 1,) so that if the port g3 is open to inlet of Steam to cylinder, that of g4 is open to exhaust. The slide-valve G I connect to be operated by the eccentric rod G1 on the eccentric G2, which is iirrnly sethem,

` opposite end are in closed position. i that the valve G has sufficiently opened the mainport g3 to admit steam in the cylinder, rand l thus have in this position of the govcured to the shaft A. (See Figs. l, 2.) Between the valves F and G, this latter l provide with steam-spaces g5, (see Fig. 1,) in which the steam acts to balance the sliding action of said valves, and, consequently, ease and facilitate the centrifugal action that operates The piston connects by crank attachment to shaft as usual.

The slide-valves thus constructed and related to the governors, as shown and described, the operation of the parts is therefore as follows: Supposing the piston to be at one end of the cylinder, and the crank at its dead-` stroke, `(see Figs. l and 2,) it Will be noticed that the ports j f1 f2 and g g1 g2 are open to full steam, while the duplicated ports at the Further,

ernor cut-off the great advantage of achieving a` full boiler pressure to act on the piston. Now, as the piston travels in its stroke th feed of steam through port g3 becomes greater, the valve G being operated to more fully open said port, `While at same time the valve F followsalong` that of G as long as nocentrifugal action operates the governor. In case, however, during the 'above travel of the piston centrifugal action takes place, be it great or small,.said action changes the angle of the crank carrying the eccentric G2, and consequently the position of its valve G; also it will be noted at same time the eccentric C in the housing changes the stroke of the cut-oft' valve F, thus cutting oi excess of steam in any place or position that the piston may be positioned. The engine operates then by'expausion, but When no such centrifugal action takes place, the full boiler pressure acts, and consequently the full stroke of the piston can "be performed.

In Fig. 3 I show my improved eccentric attachment, with the governor simplified, by the use of the single slide-valve H, made to control the main ports g3 g4 of cylinder. I connect the valve H to the eccentric rod attachment F with the eccentric C, (see Fig. 3,) thus dispensing entirely With the outer eccentric attachments G1 G2. The operation of the governor and valve H is the same as before described, so far as obtaining a correct action of cutting oft' the steam, with same advantages of operating the piston by full boiler pressure, or by expansion.

What I claimis-F- y i l The governor cut-off, consisting of a housing, B, containing the eccentric G, connected by rods cZ c3 to lever-arms D D1 which carry the balls, as shown and described, also the eccentric C', made to control a cut-oifvalve formed to have the ports f f1 f2 and the further eccentric G2 connected to slide-valve G, having ports g g1g?, all said parts being con structed and combined to operate in the manner and for the purpose set forth.

In testimony of said invention, I have hereunto set my hand.

JACOB FELBER.

Witnesses: u Y

WILLIAM W. HERTHEL, GHAs. F. MEisNER.

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