US603363A - Governor - Google Patents

Description

(No Model.) n

A kB. IRELAND.

` GOVERNOR.

No. 603,363. Patented May 3.1898.

ATTORNEYS.

UNITED VSTATES "PATENT Orrrcn..

A BERTSELL IRELAND, OF GREENE, NEW YORK.

GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 603,363, dated May 3, 1898.

` Application filed November 1l, 1897. Serial No. 658,121. (No model.)

To all whom zit may concern:

of Greene, in the county of Chenango, inthe State of ,New York, have invented new andj useful Improvements in Governors, of which the following, taken in connectionv with the accompanying drawings, is a full, clear, and exact description.

My invention relates to engine-governors of the type in which the centrifugal swing of a pivoted lever induced by the revolution of a shaft operates to regulate the speed of such revolution. f f

My obj ect is to produce a governor embodying a stationary friction disk or shell provided with a suitable bearing-surface, combined with a governor-bar transverse radial to said disk and secured upon a shaft central to said disk, centrifugal levers p ivoted upon the opposite ends of said bar, governorblocks pivoted upon said levers and adapted to be brought into frictional contact with said bearing-surface by the swing of said levers, springs connecting said levers to said governor-bar and normally holding them in such position that said blocks are out of contact .with said surface, a connecting-rod connecting the extremityl of one, lever to the central portion of the other one, and means to prevent the oil from the shaft-bearing ilowing into said shell and working onto the bearingsurface to permit the governor-blocks to slip, and thus more or les'sdestroy their governing force and effect. The `friction disk or shell is mounted upon a suitable support, and the securing means, as bolts, are at one side of the center of said shell.

It is constructed as follows, reference be-v ing had to the Vaccompanying drawings, in whicht Y i Figure 1 is an end elevation of the shell, shaft, and governor mechanism. Fig. 2 is a horizontal sectionthereof on line oc A is a beam or other suitable support upon which a friction disk or shell 2 is Secured in a stationary position, as by bolts 3, said shell having a suitable friction-surface, as a flange 4. The securin g-bolts and support are at one side of the center. This shell is provided with a central boss 5, in which the shaft 6 is sui-tably mounted or journaled. A governor-bar 7 is suitably secured upon said shaft, having i i l its extremities rabbeted, as at S, so as to form Be it known that LA BER'rsELL IRELAND,

the two stop-shoulders a b, which limit the movement of the levers 9 in both directions. Upon these extremities the centrifugal levers 9 are suitably pivoted, as upon bolts or pins 10, and are provided with vthe weights 11, either integral therewith or suitably secured y thereon by any ordinary and suitable means,

saidweights being upon the long arms of said levers. When these levers are normally in position, the springs 18 hold them pressed against the shoulders a; but when the levers have reached the eXtreme of their outward movements their short ends bear against the shoulders b,.and thus prevent the weighted ends of the levers from coming in contact with the anges 4.

Upon each lever a rocking shoe or block 12 is suitably mounted, as by means of the interiorly-rabbetedV holders or brackets 13, and a pivot pin or bolt 14 is inserted through them and said lever. A screw or other suitable fastening 15 secures said shoe in said bracket.

The shoes or blocks 12 are secured to the levers 9 at a point beyond the pivotal bolt 10, and hence but a slight outward movement of the weighted ends of the bolt is necessary to Amove these shoes or `blocks l in contact with the flange 4. By means ofthe brackets 13, which are pivoted upon thejlevers 9,`the shoes are enabled to ,adj ust themselves to the flange 4 no-matter what position the levers 9 may assume. Suitable ears are provided, marked 16 on said levers and 17 on said governor-bar, and 18 18 are suitable springs and threaded bolts suitably mounted in or upon said ears, and 19 19 are suitable nuts by which the tension of said springs is adj usted and equalized, `whereby said shoes are normally retained out of contact with said friction-surface and at equal distances therefrom. Two of these springs are necessary, one for each lever 9, or the levers will act unequally, as is the case where but a single spring is used. y

A rod 20 is suitably connected t0 the extremity of the short arm of one lever and to the long arm of the other at a suitable point between the weight and pivot.

The space 21 around the shaft prevents the oil from the shaft-bearing iiowing into the shell and there working around and getting TOO and thus render the governor more or less inoperative.

It will be seen that at up to a certain speed the governor does not operate to retard the revolution of the shaft and that when it passes that speed the centrifugal force will swing said weights outward,swinging said levers, and as the shoes are mounted between the weight and pivot of each lever said shoes will be brought into frietional contact with the surface ot' said shell,bearin g thereon with a pressure according to the centrifugal force exerted, which is dependent upon the speed above a certain rate; that said shoes when in such contact act as brake-shoes to retard their own movement and through said bar exert a force to retard the revolution of the shaft; that as soon as the speed is reduced to a certain rate the tension of the springs will have overcome the centrifugal force and will retract said shoes out of such contact; that the connecting-rod acts as an equalizer to force said levers to swing equally either to exert equal frictional force against the shell or to retract the shoes equally to insure the simultaneous contact of the shoes with the shell, and that the rocking of said shoes insures a perfect bearing of cach shoe against said shell.

It will be further seen that pivots 10 and 14 are upon different radial lines, one longer than the other, from which it results that when a block comes into contact with the shell the resistance will exert a leverage upon the lever 0 to assist the centrifugal force to throw the weight still farther out and increase the retarding force exerted, whereby the governor responds very quickly as soon as the increase of revolution above the normal rate is snllicient to bring a block into contact, and if there is any liability of variation whereby one block will make such contact first the connecting-rod 2O will cause the other to immediately make a like contact.

The space 2l is created by offsetting the boss 5 upon suitable ribs or brackets in any ordinary way, leaving an opening substantially as shown for the purpose aforesaid.

Having described my invention, what I claim, and desire to secure by Letters Iatent, 1s-

1. In a governor, a shell havinga flange 4, and provided with a central boss by means of which the shell is secured to the drivingshaft, a governor-bar secured upon the end of the driving-shaft, and two pivoted weighted levers pivoted upon the rabbcted ends of the governor-bar, and the two spiral springs 17 having their inner ends secured to the governor-bar, and their outer ends attached to the weighted levers at a short distance beyond their pivotal points, combined with the brackets pivoted upon the outer edges of the levers, also beyond the pivotal points, and the shoes which are secured to the brackets, and which shoes are moved outwardly in contact with the flange it, of the shell when the levers are moved outwardly, substantially as shown and described.

2. In a governor, ashcll provided with the flange 4f, and a central boss 5, a drivingshaft to which the shell is secured by means of the boss, a governor-bar secured upon the end of the shaft,and which bar has rabbcted ends and stop-shoulders to limit the movement of the levers, and is provided with the ears 17; and the two curved weighted levers f) which are pivoted upon the outer ends of the bars, and which are adapted to strike against said stopshoulders, and which levers are provided with ears or hooks 1G, combined with the two springs 18, one of which is secured to each of the levers, a suitable adjusting device for each spring, a rod 20 for connecting the short end of one of the levers with the long end of the other, the two brackets 13 pivoted upon the levers, and the shoes 12 secured in said brackets, substantially as shown and described.

In witness whereol;` I have hereunto set my hand this 16th day of October, 1897.

A BERTSELL IRELAND.

In presence of- FRANK G. IIoLDRIDcn, L. GARDNER BOLT.

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