US651953A - Governor for fluid-pressure engines. - Google Patents

Description

F. M. RITES.

GOVERNOR FOR FLUID PRES'SUR E ENGINES.

(Application filed May 16, 1896.)

(No Model.

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Patented lune l9, I900. F. M. RITES.

GOVERNOR FUR FLUID PRESSURE ENGINES.

1 High; 9 6 mg]? mid [mi/a (Application fi1e 1 Ma,y 16, 1896.)

No. 65l,953.

(No Model.

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, UNITED ST TES PAT NT OFFICE.

"FRANCIS M. RITES, OF ITHAOA, NEW YORK.

GOVERNOR FOR FLUID-PRESSURE ENGINES.

SPECIFICATION forming part of Letters Fatent No. 651,953, dated June 19, 1900.

\ Application filed May 16, 1896. Serial No. 591,810. (No model.)

To all whom, itmcty concern:

Be it known that I, FRANCIS M. RITES, a citizen of the United States, residing at Ithaca, in the county of Tompkins and Staterof New York, have invented or discovered a certain newand useful Improvement in Governors for Fluid-Pressure Engines, of which improvement the following is a specification.

My invention relates to improvements in governors for fluid-pressure engines; and it consists in the novel construction of the weight structure and the arrangement of the parts thereof with respect to each other and to the revoluble fly-wheel or carrier; in the provision of a single device, in a horizontal engine containing my improved governor, for balancing both the inertia of the reciprocating parts of the valve-gear and the unbalanced gravity of the weight structure of the governor, and in the novel combination, construction, and arrangement of the parts of the governor.

The objects of my invention are to improve and simplify governors of fluid-pressure engines, to give them maximum strength and minimum tendency to race, and to make the effect of the resistance of the fly-wheel on the Weight structure uniform in all positions of the eccentric. These objectsare attained in the governor herein described, and illustrated in the drawings which accompany and form a part of this specification, in which the same reference numerals indicate the same or corresponding parts, and in which Figure 1 is a side View, partly in elevation and partly in section, through the steam-chest of a steam-engine provided with my improved governor. Fig. 2 is a detail plan view of the portion of the engine containing the governor. Fig. 3 is a side view, and Fig. 4 a transverse section, of a form of governor difiering slightly in details of construction from that shown in Fig. 1. Fig. 5 is a side view, and Fig. 6 a transverse section, of another form of governor differing slightly in details of construction from those shown in Figs. 1 and 3. Fig. 7 is an end view, and Fig. 8a transverse section, of the hub of the fly-wheel or carrier of the governor,showing the bearing of the pivotpin; and Fig. 9 is a section through the valvechest of an engine having an unbalanced distribu tion-valve.

In the drawings, 1 designates the piston-rod of a horizontal engine; 2, its cross-head 3, its

connecting-rod; 4, its crank-pin; 6, the crankdisk, carrying said pin; 7, the steam-valve, composed of two pistons 8 and 9, mounted upon a valve-stem 10, and 12 the steam-chest.

13 designates an eccentric which in the governor shown in Figs. 1, 2, 3, and 4 is a pin carried by the weight structure of the governor, as hereinafter described.

20 is an eccentric-rod extending from the eccentric 13 to a rocker-arm 42, supported by the engine-frame, and 21 is a link connecting said rocker-arm with the valve-stem 10.

43 is a combined tension and compression spring one end of which is secured to the rocker-arm 42 and the other end to the frame of the engine. This spring, as hereinafter explained, serves both to balance the unbalanced gravity of the weight structure and to counteract the eifect of inertia of the reciprocating parts of the valve-gear.

The governor consists of a combined centrifugal and inertia Weight 26, mounted upon and preferably formed rigidly with an arm 11, secured to a pivot-pin 17 ,which in the form of governor shown in Figs. 1 and 2 has its bearing in the crank-pin 4 of the engine, while in the governor shown in Figs. 3 to 6, inclusive, this pin has its bearing in the flywheel or carrier itself. The eccentric-pin in the form of governor shown in Figs. 1 and 2 is upon an arm 16, secured to the other end of this pivot-pin 17. In the form of governor shown in Fig. 3 the pivot-pin is carried by an extension of the arm which carries the weight structure,while in the form of governor shown in Figs. 5 and 6 the eccentric-disk there shown is secured to the end of the pin 17opposite to that to which the arm carrying the governorweight is secured. The governorweight, with the arm carrying the same, the eccentric and the arm carrying the same, and the pivotpin constitute one rigidly-connected weight structure.

In all of the governors shown in the drawings the radius of the center of gravity of the weight structure drawn from the pivotal roe point of the weight structure is substantially at rightangl-es to the radius of theeccentric.

- This pe'rinits the use of the same spring'43 for tioned. Its incorporation into the governor herein described, however, does {notinvolve any-departure from the present invention.

balancing both the inertia of the reciprocating parts of the valve-gear and the unbalanced gravity of the Weight structure when the governor is employed in horizontal engines. The use of the spring 43 for balancing the inertia of the reciprocating parts of the valve-gear is described and claimed in i Letters Patent No. 342,307, granted to me on May 18, 1886'; but because of the acute angle formedby the radius of the center of gravity of the weight structure with the radius ofthe eccentric in the governors illustrated in said patent it was necessary to provide other ine'an's than the spring shown in Fig. 5 of that patent and corresponding to spring 43 of the drawings which accompany thisspecification to balance the unbalanced gravity of the weight structure; but when the radii of the spring 43 about the pivot increases and' de' creases in'a'cc'ordance with but in opposition tothe increase and decrease of the gravity f'noment of the weight structure about its pivot. Thus when the fly-wheel is inthe position shown in Fig. 1, the'center of gravity of the Weight structure being directlyover the pivot, the gravity moment of the weight structure is zero,and the moment of the spring 43is also practically zero, since the pressure off the spring 43 is transmitted to the eccentrijc practically in line with the pivot; but when the fly-Wheel has rotated through ninety degreesso that the gravity moment of the weight structure about its pivot is maximum, the'rnoment of the spring is also substantially maximum. l d

' Instead-of employing the spring 43 to balancethe unbalanced gravity of the weight structure the pressure of steam on the valvest'e'mma'y be employed for that purpose when Fig". 9. This feature, however, I do not claim as of the present invention, since it is described in my Pate'nt'No. 342,307, above men- I In order to decrease friction of the pivotpin in its bearings and to avoid cutting of the journal or bearing, one or more bushings 44:,

movable one within the other within the bearing and on the bearing-pin, may be employed, as shown in Figs. 4, 6, and 8.

Having thus completely describedmy-invention, what I claim, and desire to secure by Letters Patent, is V r 1. In aneng-ine, the combination, with a horizontally-moving valve-gear, and a revoluble fly-wheelorcarrier, of a centrifugal weight and an eccentric, rigidly connected and movably mounted on the carrier, and a combined tension and compression spring, acting on said eccentric and weight in line with the line of valve travel and'balancing both the inertia of the reciprocating parts of the valvegear and the unbalanced gravity of said eccentric and weight. i

2. In an engine, the combination, with a horizontallymoving valve-gear, and a revoluble fly-wheel or carrier, of a centrifugal weight and an eccentric rigidly connected and pivotally mounted on the carrier, the radii of the center of gravity of the weight structure and of the-eccentric being substantially at right angles, and a combinetltension and compression spring, acting on said eccentric and weightin line with the line of va'lv'etravel and balancing both the inertia of the reciprocating parts of the valve-gear and the unbalanced gravity of said eccentric and weight.

3. In a governor, the combination, with a revoluble fly-wheel or carrier, of a. weight structure, the parts of which areri'gidly connected, and which consist-s of a pivot-pin journaled inthe carrier, a; centrifugal weight mounted upon one end of the pivot-pin, and fan eccentric mounted upon the opposite'end iofthe pivot-pin. In testimony whereof I have hereunto set fim y hand. 1 FRANCIS M. RITES.

Witnesses:

CHAS. D. BOSTWICK,

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