US536137A - Goveenoe foe steam engines - Google Patents

Description

t e e h S W e e h S 2 L E B E V m .(No Model.)

GOVERNOR FOR STEAM ENGINES.

' Patented Mar. 19, 1895.

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' Patented Mar. 19, 1895.

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JOHN V; EBEL, OF PITTSBURG, PENNS YLVANIA, ASSIGNOR OF TWO-THIRDS TOGEORGE E.- LORCI-I AND LOUIS LOROI-I, JR OE SAME PLACE.

GOVERNOR FORSTEAM-ENGINES. I

SPECIFICATION forming part of Letters Patent No, 536,137, dated March 19, 1895;

Application filed V-I une '7, 1894. Serial No. 513,769. (No model.) 7

To all. whom it may-concern: k -lubrication,together withimproved means for Be it known thatI, JOHN V; EBEL, a citizen automatically governing the supply of steam of the United States, residing at'Pittsburg, in to the valve in a novel and simple manner.

the county of Allegheny and State of Pennsyh Iii-general, the engine consists of the cylin- 5 vania,-have invented or discovered a new and der and valve chest, rigidly mounted on posts useful Improvement in Governors for Steamand secured by upright rods passing through Engines, of which the following is a full, clear, the posts and screwed into the.lower case, in and exact description, reference being hadto which are contained the crank disk and valve the accompanying drawings, forming part of actuating mechanism; the piston rod and ec- 1o this specification, in which+ centric rod being etnbraced'in stuffing boxes 1 Figure'Lis a vertical sectional view of a above and below, and making direct connecsteamengine embodying myinvention, the tions, while the worki g partsinclosed e section being taken on the line I, I, "of Fig. 2. case revolve in a bath ofoil maintained'at a Fig. 2,isasimilarsectio'n,at right angles toFig. vfixed level within the oil tight case. A '15 1, the section being-taken onthe line II, II,'of It also. consists in certain features of th ,Fig. 1. Fig. 3, is a cross sectional view, taken governing mechanism as shall be hereinafter on theline III, III, of Fig. 1, illustrating the described and claimed. I actuating mechanism of the governor. Fig. 4, Referring now to the drawings, 2, is the oil is a-face view of the crank disk. Fig. 5, is a tight case secured to the foundation by the 7.: 2o sectional view through the crankdisk, eccenbolts 3, and provided on its front with the retrio and bearing, the section beingtaken on movable plate 4, in which is-moun'ted the glass the line V, V, of Fig. 4. Fig. 6, is a detached center 5. detail view'of the automatically adjustable 6 6. are hollow posts, supporting the lower 4 eccentric and the surrounding yoke of the eccylinder head 7, and passing through the 2 5 centric r'o'd. .Fig. 7, is a view of the crank posts are the upright rods 8. 8. tapped into the disk, similar to Fig. 4, taken from the opposite top-0f the lower casing and extendingup on side, the shaft being shown in section. ".Fig. either side of the cylinder 9, through lugs 10, 8, is a face view ofthe interior of the eccen on each side of the upper cylinder head 11, trio case, one of the shields beingremoved, and provided at their tops with the nuts 12.380 0 and illustrating the shaft in section, the sur- 12. The cylinder and its two heads fit closely rounding hollow spindle, carrying the true and when the nuts 12 are turned down, it eccentric illustrated in Fig. 10, and the eccenwill be seen that the various parts' will be trio ring attached by a pinto the outer surdrawn closely andtightly together, forming a rounding shields. Fig. 9', is a detail view in :Very compact, durable, and rigidconstruction. 3 5. perspective of oneof the shields or sides of Attached to the side of the steam cylinder the eccentric case. Fig. 10, is-a detail view 9, is-the. usual valve chest 13, fitted with the in perspective of the hollow spindle, showing supply and exhaust-pipes 14, 15, and the balthe manner inlwhich the actuating pinion and anced valve 16, the stem'17, of which passes true eccentric are "constructed. Fig. 11, is a down through the stuffing box- 18 to the ad- 0 4o detailviewin perspective ofthe eccentric ring, justable connection 19, by means of which it .Fig. 12, is a cross sectional view taken onthe is attached to the eccentric rod 20. line 'XII, XII,'of Fig.5. 21 is the pistoh, therod 22 of which makes Like numerals and letters of referenceirefer direct connection to the crank disk B, passto like parts wherever used, throughout this ing down through the stuffingbox 23 in the 45 specification. I lower cylinder head and a similar stuffing'box My invention consists inanimprovement' 24 located in the upper part of the case 2 in direct'acting steam engines, and has for its Connection with the crank disk B and its pin object the construction of this class of en- 1) is made by means of the horizontal yoke 25, Y gines in such a manner as to secure in the secured to the lower end of the piston rod, 100. j 50 highestdegree the desirable qualities of siuicarrying the box 26 embracing the pin 1), and plicity, cheapness, efficiency, and a thorough which is free to slide in the horizontal slot of V I g V i V x the yoke, the connection and its operation being in the manner well understood in devices of this character. The yoke slides against,

. and is guidedin its up and down movement by the slides 27, 27, held against the studs 28 by the countersunk headed bolts 29 and nuts 30, the studs 28 being capable of being set in or out to adjust for Wear, and locked by lock nuts 31, which also prevent leakage of the oil. The yoke is further held against lateral movement by hearing against the front inside face of the case and the boss on the crank disk respectively. The chamber formed in the inside of the case is kept full of oil up to the line a, a, thus insuring thorough lubrication of all the parts inside the case.

A is the main shaft of the engine, bearing in the pillow block 32 and to which is rigidly secured the pulley wheel 33.

I shall now describe the automatic governor and the means for actuating it. i

As has already been described, the valve stem 17 is adjustably connected to the eccentric rod 20, carrying a yoke 34 which embraces the eccentric case and is operated thereby. The eccentric case consists of two halves 35 and 36, surrounding the eccentric proper 37, and by which the relation of the centers of the eccentric case to the center of the shaft, is regulated. When in position, as shown in the drawings, this case is also |naintained against lateral movement by bearing against the crank disk and side of the chamber respectively. The true eccentric'37 is formed integral with the hollow sleeve 38, surrounding the shaft A, supported Within the bearing 39, which is bolted to the sides of the chamber 2, and extending beyond it and furnished with the pinion 40, keyed on.

41, 41, are segmental pinions pivotally attaohed at 42 to arms of the pulley wheel 33 by bolts 43, and having outwardly extending arms 44; fitted with adjustable weights 45. The segmental pinions 41 are in mesh with the pinion 40, and when, by reason of the motion transmitted through the centrifugal action of the weights in the well known manner of this class of governors, the segmental pinions will cause the pinion 40 to revolve on the shaft A, and, when set as shown in Fig. 3 of the drawings, the wheel revolving as indicated by the arrow, the pinion, and consequently the spindle, will be caused to move upon the shaft in the direction indicated by the double arrows in Fig. 12.

As clearly shown in the various views, the eccentric is formed integral with the spindle and will of course-move in exact proportion.

to the motion of the pinion. It is surrounded by the closely fitting ring 46 provided at one end with the lug 47, through which'passes the sei'ew 4S connecting the ring with the two outer shields in such a manner t at otion of the eccentric will betransmitted to em. On the outer end of the screw 48, is mounted a roller 49, the purpose 0 hich is to mainmm the pivotal connection of the eccentric,

the spindle 38 at each side of the eccentric 37, thus aiding in guiding the motion of the eccentric shields 35 and 36. It will be evident, also, that motion of the crank disk will be transmitted, by means of the .side of the slot bearing against the roller, to the eccentric case, and it will operate in all respects on the yoke and eccentric rod, in the same manner as an ordinary eccentric. Thus, when the weights 45 are thrown out, due to increased speed of the engine, the throw of the eccentric will be proportionately lessened, resulting in decreased travel of the valve and quicker cut-off.

A return of the various operative parts to a normal position is secured in a novel and highly effective manner.

Referring to Fig. 12, it will be seen that when the spindle is revolving in the direction of the double arrows, within the stationary bearing 39, there will be a constant friction tending to retard the revolution of the spindle and operating through the pinion 40 on the segmental pinions 41 and Weights 45, will cause them to seek to return to their normal position as soon as the reduced speed of the engine will allow such frictional effect to overcome the centrifugal action of the weights. Inasmuch as the entire weight of the shaft and pulley with its accompanying parts is borne by the hollow spindle 38 resting in the bearing 39, this frictional contact will be considerable, and will tend to increase the binding action on the spindle, and to return the weights to their normal position. By setting the weights in or out, the desired speed of the engine may be readily regulated. I am thus enabled to dispense with the usual springs commonly employed on governors of this class, as I have found the engine to give most satisfactory results when constructed and operated as I have described.

When it is desired to reverse the engine, all that is necessary is to take out the bolts 43, reverse the segmental pinions 41 when they will assume the position indicated by dotted lines in Fig. 3; and to change the roller from the slot 50 in the crank disk to the correspond ing slot 52, shown in Fig. 7, the relation of both slots to the crank pin should he the 5M6, and their position, in regard to it will regulate the point ofcut-off of the steam.

Changes and modifications may be made in the location and arrangement of parts by the skilled mechanic without departing from my invention, as for instance, the eccentric and case may be located outside the chamber of tam I the engine, it being only necessary that" the spindle should revolve in a fixedbearing, in order to accomplish the desired result of counteracting the effect of cen'trifugal action on the weights andreturning themto a normal 7 position. The improved governor may be applied as well to a horizontal or other type of engine where the conditions are equally favorable, with as good results as I have found in the typeI have illustrated. It has been found in practice to give the results sought for, in a highly successful and beneficial manner; is

capable of developing the highest efficiency of the steam, andfurthermore, the engine is very simple, of few parts and not liable to get out of order. It is easy and cheap to construct and keep in repair, and requires little or'no attention for lubricating.

Having described my invention and in what mannerit operates,what I claim, and desire to secure by Letters Patent, is.

1. In a steam engine, a hollow spindle surrounding the main shaft and inclosed within a fixed bearing capable of being revolved on the main shaft by 'centrifugally controlled segmental gearing, pivoted to the driving Wheel, carrying weighted arms and in mesh with gear teeth at one end of the hollow spindle, the

spindle being retarded by friction against the inside of the fixed bearing, in combination with an eccentric valve operating mechanism, surrounding an eccentric forming apart of the hollow spindle and connected by an eccentric rod with the valve, substantially as shown and described.

2. In a steam engine, steam supply governing mechanism consisting of a centrifugally controlled hollow spindle, surrounding the main shaft and inclosed within a fixed bearing, provided with an eccentric inclosed in a ring having a lug, through whichpasses a pin securing the lug to outer surrounding circular halves constituting a wheel capable of being set eccentric to the true center of the shaft, by'the rotation of the spindle and eccentric,

and mounted internally within a yoke attached to the valve rod of the valve, the halves of the wheel having elongated apertures surrounding the spindle and allowing of adjustment relative thereto, and the pin constituting a screw, tapped into one of the halves and being provided at the other end with a roller which enters a radial slot in the crankdisk, and is capable of being revolved thereby,

substantially as shown and described.

3. In a steam engine, toothed wheels, or segmentsof wheels, pivotally attached to arms of a Wheel secured to the main shaft, provided with weighted arms, capableof rotation due to centrifugal force, meshing into a pinion on one end of ahollow spindle surrounding the my hand this 28th day of March, 1894.

. JOHN V. EBEL.

Witnesses:

PHILIP Y. PENDLETON, C. M. CLARKE.

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