US868750A - Centrifugal governor. - Google Patents

Description

UNITED srrirnsurrnnr orrron.

VlNCENT `r. Allllfll, OF DAYTON, OlllO, ASSIGNOR TO DAYTON ELECTRICAL MANUFACTURING OO., A. OORPORATlON Ol" OHIO.

CENTRIFUGAL GOVERNOR.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed April20,190'7. Serial No. 369,207.

To all 'wLof/n yit muy concern:

Be it known thaiJ .1, VINCENT G. APPLE, a citizen of the United States, residing at Dayton, in the county of Montgomery and Slate of Ohio, have invented certain new and useful lnrprovements in Centrifugal Governors, of which the following is a specification.

hly invention relates to improvements in centrifugal governors, and has for its general object to provide an improved governor adapted for association with a variable speed or high speed prime mover, to act to transmit to an element lo be driven a practically uniform, constant and relatively low speed of rotation.

One of the particular objects of my invention is to provide a governor ol this type which is self-contained,

l5 wherein the rotating parts run wholly upon bearings constituting part of the self-contained structure.

A further object of my invention is to provide a construction wherein all of `the bearing parts are inclosed and may run in grease or other lubricant.

Still another object of my invention is to provide a governor wherein the adjustment of the parts to effect increase or decrease in the speed of the driven element maybe effected Wh ilo the governor is in operation, and further, without nnttorially changing the frictional re- 2 5 sistanee offered by the parts in rotation.

A yet further object of my invention is to provide a construction which is simple, efficient, readily taken apart and assembled. and capable of instant adjustment to vary the spccd imparted to the driven element.

Other and furthcr objects of my invention will beA come apparent to those skilled in the art from the following description taken in conjunction with the acco mpanying drawings; wherein,

Figure I. is a cenlral vertical, longitudinal section lhrough. a governor embodying my invention; Fig. 2 is a transverse section on line 2--2 of Fig. l., and, Fig. 3 is a cross section on lino 3-3 of Fig. 1.

Throughout said several views like mlmcrals of reforence refer always to like parts. In the drawing 5 indicates a casing, which maybe a casting of suitable shape, providing a central chamber (i, wherein thc grwcrnor wcighls may move. The front end wall 7, of the casing, is recessed suitably to receive a ball bearing structuri- 8, whereof 9 is an outer annulus, sealed in a recess in the casing wall,l 9/ is an inner annulus affording conn-al shaft passage, and 10-l0 arc the lmlls, interposed between said annuli, and positioned by suitable retainers 10, such structure representing a typical ball bearing of the self-contained type, suitable for thc purpose to be described. l prefer further that a packing ll should be arranged bctween the inner annulus or race 9, and the end wall of the casing, which is apertured only sufficiently for the reception of a shaft. v

12 indicates the thickened rear wall of the easlng 55 internally screw-threaded as at 13 to receive an adjustin g head lll, such head being provided with a screw threaded portion 15 and an enlarged handle portion 16 surrounding a central aperture 17, for the reception of a casing of a iexible shaft, such as that indicated in dotted lines at a in the drawing, to which shaft easing the adjustingl head may be secured against rotation by set screws 18, sunk in threaded apertures 19 Which may also serve as Spanner holes. In the adjusting head 14 is mounted a rear ball bearing 20 comprising an outer 65 annulus 21, an inner annulus 21, and interposed balls 22, and retainers 22, the ball bearing structure being preferably of af type which is self-supporting, as in the case of the ball bearing 8 at the front end of the structure.

Through the alining annuli 9/ and 21/, of the front and rear bearings, passes a shaft 23, which extends beyondthe front end of the casing 5, and has secured to its projecting end a pulley 24;, illustrated as a beveled friction pulley.

While the pulley may be secured to the shaft in any approved manner, l illustrate an advantageous construction to this end, involving a pin 25 extending transversely through the shaft and projecting on both sides thereof, the pulley 24 having in its hub slots 26 80 `which embrace the projecting ends of the pins 25 and hold the pulley against rotation, the pulley being held against slipping axially from engagement with the pin 25 by means of a screw 26 taking axially into the shaft through the front face of the pulley.

30 indicates a collar secured to the shaft 23 by pin 31 said collar being flattened on opposite sides and having pivoted thereto governor weights 32-32 of semi-annular shape in cross section, and provided with curved arms 33, adapted to constitute eccentric or c'am 90 levers, as hereinafter described, pivoted on pins 34 taking into the flat surfaces of the collar 30, heretofore described. Between the front end of the collar 30 and the member 9 of the front ball bearing, is interposed a plate 35, preferably presenting aflat surface of consid erable extent toward the collar 30 and' centrally Ithickened to present a bearing surface at its forward The shaft 23 is provided with a telescoping member, with respect to which it may move axially only, and to this end the rear end of said shaft is made tubular, the recess 37 therein being provided with internal feathers 3S, to interfit in grooves 40 in a telescoping shaft section 39 towhich is suitably secured a coupling head Lil, adapted to receive and be suitably fastened to a .flexible shaft or other suitable part to be driven, substantially as indicated in dotted lines at b.

In use my governor is adapted for the transmission to shaft element 23, and the other connected elements to be driven, substantially uniform speed of rotation, precisely determinable by adjustment of the governor', from a high speed or variable speed time mover', wherewith the pulley 24 is arranged for coaction. It will be seen that if pulley 2li be pressed against the prime mover, such as a fly-wheel of the variable speed gas engine, so that said pulley is rotated, the rotation is imparted tothe shaft 23, through the telescoping shaft section 39 to the other elements to be driven connected therewith, for instance, the flexible power shaft b, indicated in dotted lines. Rotation of the shaft 23 carrying with it the governor weights 32, causes said governor weights to fly outward so that their cam-shaped carrying arms 33 to press against the bearing plate 35 to exert a tendency to move the shaft 23 rearwardly, against the tension of spring 36. When the speed of rotation of the shaft 23 and the governor proper is such that the spring 36 is unable to resist the thrust caused by the action of the governor arms 33 upon plate 35, the shaft 23 is moved bodily rearward withdrawing pulley 24 from contact with the prime mover, as shown, until the speed of rotation is so reduced that spring 36 may overcome the thrust occasioned by the centrifugal action of the governor and push the shaft with its pulley 24 forward for effective connection with the prime mover again. In practice it will be well understood that with a given adjustment of the spring 36, a practically constant speed of the shaft 23 and its connected elements to be driven is secured, as this general principle of governing is well known.

It will be seen from the construction disclosed that the tension of spring 36 may be adjusted by rotation of the adjusting head 14, which screws said head 14 and the ball bearing carried thereby toward or from the governor'. It will fui'ther be noted that the spring 36 at the rear end and the wear plate 35 at the front end, both bear against members of anti-friction bearing rotatable with the shaft, so that increase and decrease of the tension of spring 36 results in no perceptible change in the frictional loss of power in the governor. Further it will be seen that the division of the telescoping shaft section admits of sliding movement of the shaft member 23 without disturbance of the relation of the connection of the shaft to the extraneous, such as the flexible shaft illustrated in dotted lines at b.

While I have herein described in some detail a specific embodiment of my invention, which I have found in actual practice to be advantageous, it will be apparent to those skilled in the art that numerous modifications in the specific embodiment may be made without departure from the spirit and scope, and I do l not desire, therefore, to be understood as limiting my j invention in its broader aspect to the specific devices shown and d escrib ed,

Having thus described my invention, what I claim and desire to secure by Letters Patent, of the United States, is:

l. ln a governing appliance, a frame or casing, a shaft supported thereby for axial movement, separated axiallystationary parts mounted for rotation with the shaft, a weight carried b v the shaft, arranged when moved by eentrifugal action to act upon one axially-stationary part to move the shaft axially, and a spring opposing the action of said weight bearing on the other axially-stationary part.

2. In a governing appliance, arframe or casing, a shaft, opposing end bearings for the shaft, comprising parts r0- iatable with the shaft, parts positioned by the casing, and interposed anti-friction parts, and a centrifugal governor carried by said shaft between said bearings, comprisingr parts arranged to exert a cam action upon a part of one ot' said bearings rotatable with the shaft, and a spring opposing said cain action, exerting its thrust upon that member of the opposite bearing rotatable with the shaft.

2'. ln a governing appliance, a'containing casing pro viding opposite end bearings, one of which is adjustable axially of the casing, a shaft mounted in said bearings, a governor carried by said shaft between said bearings, and comprising" an adjustable spring, coacting with one of said bearings for adjustment as to tension by .axial ad justment of said bearing.

l. In a governing appliance, a frame or casing, a shaft supported thereby for axial movement, separated parts positioned axially by the frame and rotatable with the shaft, one of said par i being adjustable in the frame with respect to the other, and a governor on the shaft between said parts, comprising a weight arranged when lnoved by cmitrifugal action to exert a cam action on one said part to move the shaft axially, and a spring opposing the action of said weight bearing on the other said part.

in a governing appliance, a, casing providing a central chamber. anti-friction bearings closing opposite ends of said chamber, one of said bearings being axially adjustable, a main shaft member extending through the casing finding bearing at opposite ends in said anti-friction bearings, an extension shaft member teleseoping with the said main shaft, and a governor carried by the main shaft arranged io impart axial movements to said main shaft.

(i. [n a governor appliance, a casing providing a central chamber, anti-friction bearings at opposite ends, each comprising a central part for rotation with the shaft, a main shaft engaging said rotatablebearing parts, and a governor carried by the said shaft between said hearings, comprising weights arranged to exert a cam action upon the rotatable part of one bearing to axially move the shaft, and a spring arranged to exert its thrust against the rotatable part of the opposite bearing, for resisting the action of ihc governor weights, and means accessible l'rom the exterior of the casing for axially adjusting the last said bearing.

T. ln a governor appliance, a casing provided at its front end with a bearing, and at its rear end with screwthreaded apertures. an adjusting head closing said end of the aperture provided with a central bearing, a shaft passing through said front and rear bearings, a governor carw ried by the shaft between said bearings and arranged when in rotation to e. vrt a tendency to move said shaft rearward axially of the casing, said governor comprising a spring for re sting such movement of the shaft, at its rca r end abutting against a part carried by and adjustable with said adjusting head.

S. ln a governor' of the character described, a casing provided with anti-friction bearings at opposite ends. an adjusting head carrying the rear bearing, having an ened central aperture in rear of said bearing, a main section mounted in said bearings, a pulley on the front end of said shaft, an extension shaft section telescoping therein and rotatable therewith, and a governor comprising semi-annular weights 32 and cam arms 33,

mounted for rotation with the main shaft section, to tend to move Suid sha't rearwardly under the influence of centri'lngnl action, and comprisingl also o spring 3G interposed between n part conneclod with the main shaft section and said adjusting head.

.0. .ln :1 governing appliance, a. frame, a main shaft mem* ber axinlly movable therein, o governor connected with said shaft member to nxially move it, and an extension shaft member telescopintr with said main shaft member and longitudinally movable independently of the governor.

l0. In a governing appliance, a traine, n main shaft member axially movable therein, a friction gear device carried by said shaft member, a governor connected with said shaft member for axially moving,` it, an axially-stationary transmission part, and :1n extensible connection between the last said port and said shaft-member uniting them for rotation.

In testimony whereof I hereunto set Iny hand in the presence ot' two witnesses.

VINCENT G. APPLE.

ln the presence 0f- S. NI. IneK, N. E. SNYDER.

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