US1164021A - Shaft-governor. - Google Patents

Description

H. F. SHEPHERD.

SHAFT GOVERNOR.

APPLICATION FILED AUG-l2. 1914.

1,164,021 Patented Dec. 14, 1915.

x I 1 y I a WITNESSES: fiuw gzl zo x ATTORNEYS.

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entrain snares ma e SYLVANIA.

. HAROLD r. SHEPHERD, on Git-317E our, PENNSYLVAEIA, assranon 33G nnssnranr. GAS

.. ENGINE coiarnnv; or Gaovn or'rr, PENNSYLVANIA, a ccnronerion or rennsirens-seventies.

Patented Bee. 1st, 1915.

Appficationfiled August 12, 1914. Serial No. 856,388.

To all whom it may concern:

Be it known that I, HAROLD F. SHEPHERD, a citizen of the United States residing at Grove City, in the county of Mercer and State of Pennsylvania, have invented new and useful Improvements in Shaft-Governors, of which thefollowing 1s a specification.

This invention relatesto shaft governors and cons sts in certain improvements in the construction thereof as will be hereinafter period.

fullydescribed and pointed out inthe claims.

While the governor illustrated isapplicable to different devices in which a shaft governor is desired, it is particularly desirable in handling fuel injectors for oil engines where the thrust on the rods controlled bythe governor extend through a comparatively short period but is large during this It is also particularly desirable where comparatively light fly Wheels are used wherein there are momentary changes in velocity and it is desirable to have sufficient mass of the governor to take care of the thrust, yet so arranged as to centrifugal force as to be stable under the momentary changes in velocity referred to.

Tae invention is illustrated in the accompanying drawing wherein 1 marks the crank shaft, 2 the fly wheel and 3 the hub of the fly wheel.

The'centrifugal weight is ring shaped and encircles the axis of the carrier formed by the fly wheel2 and also the hub of the fly wheel or carrier. V Q

The weight f is pivoted on a pin 5 mounted on the fly wheel. 7

A spring 6 forms the centripetal element of the governor Stops 7 are provided to limit the movement of the weight and the dash pot 8 is provided. The eccentric rod 9 which extends to whatever mechanism it is desired to actuate and control is connected with the eccentric strap 10.

The eccentric strap is mounted on the eccentric 11.

The eccentric 11 is carried by a swinging mounting 12. The swinging mounting 12 is pivotally supported on a pin 13, the pin extending from the wheel 2. The mounting 12 has an extension 14. This is connected by a pivotal and sliding connection with the weight, this connection being formed as follows: A pin 15 projects into and through the extension 14.

It is carried by a sliding blocl; 16. lhe block 16 is slidingly mounted between the guide fingers 17. The guide fingers 17 are secured one at each side of a. lug weight a. The guide the lug by the bolt 19.

The weight of the eccentric, eccentric strap and immediately connected parts is such that acting through mounting 12 on the pin 13 as a fulcrum it will balance the centrifirgalweight at so that by this simple expedient the governor is balanced as to gravity. 7

It will be observed that the line of strain between the eccentric rod 9 and the eccentric as the rod 9 is reciprocated by the eccentric extends in the general direction X-X and that theax is of the pivotal support 13 passes through this line of strain during the faster portion of the throw of the eccentric and preferably the axis. of the pin 13 passes fingers are secured to As a result of this arrangement, the thrust or pull upon "the rod 9 has-its tendency to throw the eccentric toward and from the cen er reversed while moving in the same direction, that is, while having the pull or thrust. Furthermore, the greatest strain ordinarily being at the quarter is almost directly in line with the pivotal support so that the tendency to throw the eccentric is largely neutralized.

By making this centrifugal weight ring shaped it is possible to place its center of gravi y within the limits of the hub yet have a very large mass for the weight. In this way, the centrifugal force is diminished relatively to the mass of the weight, yet the weight has sufficient mass to withstand the momentary disturbances to which the governor is subjected.

l hat I claim as new is 1. In a shaft governor, the combination of a rotating carrier; a ring shaped centrifugal weight pivotally mounted on the carrier and encircling the axis of the carrier; a centripetal element opposed to the weight and an eccentric actuated by the weight.

2. In a shaft governor, the combination of a rotating carrier having a hub; a ring shaped centrifugal weight pivotally mounted on the carrier and encircling the hub; a centripetal element opposed to the weight; and an eccentric actuated by the weight.

18 extending from the face of the the swinging 3; In ashaft governonthe combination of a rotating carrier; a centrifugal weight mounted on the carrier; a centripetal element opposed to the weight; an eccentric; aswinging mounting for the eccentric; a

connection between the mounting and the weight; and a pivotal support for the mounting between the connection and the eccentric. i

i. In a shaft governor, the combination of a rotating carrier; a centrifugal welght mounted on the carrier a centripetal element opposed to the weight; an eccentric; a swinging mounting for the eccentric; a connection between the mounting and the weight; a pivotal support for the mounting between the connection and the eccentric;

and an eccentric strap on theeccentric, the weight of the eccentric and parts thereon balancing the centrifugal weight as to gravity. t i g a p 5. In a shaft governor, the combination of a rotating carrier; a ring shaped centrifugal weight pivotally mounted onthe carrier and encircling the axis of the carrier a centrip? etal elementjopposed to the weight; an eccentric a swinging mounting for, the eccentric 'a connection between the mounting and the weight; and 'a pivotal Support for the mounting between the connection and the swinging mounting and the Weight; and a pivotal support for the swinging mounting.

7. In a shaft governor, the combination of denies of this patent niay be obtained torture cents each, by addressing the Commissioner fki'f l 'hiten 't si 111mm Maw a". \Ji. p ewar: l. .VWZ a rotating earner;- a weight pivotally indented on the carrier; a centripetal ele j e prc 6. he we ght; an iesic'en a ewmgm mounting for the feccen'tric; a

connection between the mounting andthe weight; a pivotal support for the eccentric linecf'strainof theeccentric rod relatively V I to, ithe eccen trictwith the eccentric in the faster portions of its throw relativelyto the rod. p A V V 8.- In *a shaft governor, the combinationof a'rotating carrie "g a ring shape'dfcentrifugal 7 weight pivotally mounted on the carrierand encircling theiaxisof the. carrier; a centripetal element opposed to the in weight; an cecentric a swinging mounting for the eccen trio; "a connection between the niountingand the wei ht" a i'iivtital su ort reptile eccen-' b a l P trio between the connection andthe eccentric and an eccentricirodactuated by the eccentric, the throw, offtheeccentric Fbeing 'a'r- "anged relatively. to thespivotal sufpport'to make the axis of the pivotal support rpa'ssthe line of strain of the eccentric rod relatively to the eccentric, with the eccentric, in the faster portions of'its throw relatively to the rod. I. :J In testimon-ywhereof' I have hereunto set my. hand in the presence oftwo subscribing witnesses. r g 1 "HARoLnF. SHEPHERD.

Witnesses; v w i r NVM, laSLDAN,

E. J. FITHIAN.

Washington; 11. c.

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