Nov. 5, 1946. * D. L.. zE'lGLÃr-:R \ @43,474 GOVERNOR Filed June 22,`1944 /// - // _ 2 sheets-sheet 1 /Íä '¿ 59 .50I / 30 l 5? 29 55 » ¿l l _' . l i 1 Í s? 0 37 .ze "a 62 m/ -az l 35 2T 4l fée 55 ¿e _ 54 . .sa ‘24 y . "67'Y ,e5 ,26' //ß`f2? ' 5 1.23 / , 5 j r1:5 à ll ' Ta ‘ .'z ' ' /0 e x )7‘ ` «l /5 à -_ 2o“ L" Ó „9e/bert ¿la el' 04 Patente Nov. 5, V1946 ’ 2,410,424 GGVERNQR , Delbert L. Zeigler, Rockford, Ill., assignor to Woodward Governor Company, Rockford, lll., al corporation ol' Elinois ' Application .lune 22, 1944, Serial No. 541,542 , I ` 3 Claims. l (Si. 264-73) d This invention relates generally to governors having mechanism operable while the governor is operating to adjust the governor speed setting. end against the valve stem head i3, and at its upper end against a plunger 2t guided for move ment axially of-the speeder spring. One object is to provide a governor having' a plurality of speed adjusting mechanisms inter connected in a novel manner to enable the speed setting to be adjusted in predetermined inere ments and also progressively. The re duced lower, end of the plunger slides in a bore 25 in ahorizontal partition 2€ in a casting 2l having a skirt fitting' over the ilyballs and se cured to the top of the »casing lll, The casting _ El is formed with a central vertical bore whose >wall 28 forms a guide for the larger upper end Another object is to provide for Yactuating one of the adjusting mechanisms manually andthe il) of the plunger di which is movable upwardly and other by a ñuid pressure actuator. ' downwardly to respectively increase and decrease The invention also resides in the simple con lthe governor speed setting. An adjustable stop struction of the adjusting mechanisms and their screw 25 'threading through a cover 3i! on the novel arrangement with the governor into a coin pact unit. , casting il serves to limit the upward plunger ` movement. Other objects and advantages of the invention will become apparent from the following' detailed description taken in connection with the acconi~` Figure 1 is a vertical sectional View- or" a gov~ Fig. l. Y \ Fig. 3 is airagmentary view similar to Fig. ‘i showing a different position of the parts, In the drawings, the invention is shown‘íor ’ purposes of illustration embodied in a centrifugal ' governor in which the controllingiorce is derived centrifugally by the rotation or" ñyweights These project upwardly and are fulcrumed on pins E on a ball-head l ñxed to the upper end oi? a drive sleeve 8 which is journaled- in a bore ä in a casing lo. The sleeve projects from the 35 lower end of the'casing and is coupled to the rotary parts whose speed is to be measured. l2 whose inner race supports the head i3 on a ' members ¿il and 32 disposed on opposite sides of the plunger ät and guided for vertical reciproca tion in hores 33 and 3d formed in the casting il parallel to the ‘ocre 23. The motions of the , member are transmitted differentially to the ' Y' Horizontal arms H on the flyballs bear up - wardly against the outer race of a ball bearing , effected by movement of either of two actuating panying drawings, in which ernor embodying the novel features of the pres ent invention, the section being taken along the line l-l of Fig. 2. Fig. 2 is a section taken along the line E-ä of , Such axial adjustment of the plunger may be plunger through a lever 35 fulcrumed lntei'-, mediate its ends on the plunger 2i with> its ends plvotally connected to the respective actuating members. Herein, the lever constitutes a spur gear projecting through a transverse slot 35 in 'the . plunger' and registering slots 3l in the bores 33 and Sil. arcuate series of teeth 33 and 3d on the ends of the gear element mesh with rack teeth dâ' and @l formed on the adjacent sides ofthe actuating members. The gear is fulcrumed on ' anti?rictien bearings di’ received on steel shafts '43 pinned tothe plunger 2t and projecting into the slot 3S. -- ` vWith the diñerential connection thus provided between the plunger andthe two actuating mem bers, it will be apparent that _when either mem ber is held iixed, the lever A35 will fulcrum> about this member and the plunger will move up and ' down as the other member is raised and lowered. , stem lll reciprocable endwise in the sleeve 8 and carrying lands lâ and I6. These coact respec tively with ports ll and with the lower end oi The plunger motion will, of course, be half that the sleeve bore I9. If, in response to a detected of the actuating member. ' vspeed increase, the valve stem ld is raised from Las 1n the present instance, the actuating mem the position shown, iiuid delivered under pressure ber 3i .is adapted to be moved manually and'by -by a pump 20a to a supply chamber 2li ñows past mechanical means. For this purpose, rack teeth the Iand l5 and through a port'2l to a hydraulic servo actuator 22. Lowering of the valve stem - ad formed on one side of the member mesh with a pinion d5 fast on a shaft ¿i8 which projects into from the position shown allows duid from the 50 the casting 2l' and is journaled in bearings 4l. servo lto drain past Íthe land i6 out of Vthe lower On its outer end, the shaft carries a wheel »i8 end of the sleeve ß. U which may be turned through the mediumA of a -The vertically directed force of the iiyballs is „cable or the like. Downward movement of the opposed by and balanced against the stress of a 3l is limited by a stoy t9, on the lower coiled compression sp1-ing' 23 bearing at its lower 55 member end of a rod 50 which projects’up through a 2,410,474: ` , (Fig.r 3) and through a ‘high speed range when the member 32 is in its high speed position (Fig. ‘y chored in the cover 30. _ Y. ì ,‘ 1 Disposed in a bore 52 in the member 3l is a « l). .By energizing the hydraulic actuator, the -ì coiled compression spring 53 acting between a i, deflection of the Speeder spring .may be increased ordecreased in a fixed increment and the speed lower end wallr 54 and-a head 55 held by a snap setting of the governor shifted from one range -ring 5B on the upper end of a rod 5l projecting -to the other. Such shift may be effected quickly upwardly through and guided by the end 54 of and is controllable from a remote point. the member 3| and having a head 58 on its lower I claim as my invention: end. A screw-stop 68 on the cover 3o limits the 1. Agovernor comprisinga Speeder spring, ro upward movement .of the rod _51. The spring 10 tary speed responsive means opposing the force , 53 is made substantially stronger than the speeder of said spring. a member mounted for movement spring 423 so as to be capable of overcoming the in a rectilinear path and in opposite directions latter spring and moving the plunger 2d to a to increase or decrease the force applied by » j. predetermined lposition in therevent that the cable or other part of the connections to the 15 said spring, a gear element mounted on said mem ‘; hole 5i in the member and is adiustably an ber to turn relative thereto about an axis ex - tending transversely of said path, said gear ele " wheel 4B is broken. This position is determinedV by the stops 68 and 59 agamt which the spring ment having arcuate rows oi teeth arranged on , opposite sides thereof concentric with said axis, Herein, the other actuating member 32 is ar rack element meshing with said gear element on 20 ranged to be actuated by power controllable from opposite sides’ of said member so as to have a a> remote point. For this purpose, it is made in rolling connection therewith, means guiding said the form of a sleeve and closed at its upper end elements for rectilinear movements parallel to by a piston si) depressed as indicated at iii and engageable with an adjustable screw stop 62 on - _said path, means selectively operable to movevone the cover 34. A spring 66 enclosed within the 25 of said raclr elements back and forth between opposite limit positions to vary the deflection of sleeve 32 acts between the piston 6o and a -pro said `spring in a fixed increment, and means by .iection 63 on the partition 28 to supplement the4 which -said other rack element »may be moved force of the speeder spring 23 in urging the sleeve selectively variable distances to adjust the stress and piston upwardly toward the stop S2. The member may be forced downwardly by admitting 30 of said spring progressively, 2. A governor comprising a speeder spring, ro pressure fluid through a pipe Bt into the cylinder tary speed responsive means opposing the force 34 between the cover 30 and the piston et. Under of said spring, a member mounted for movement pressure suñicient to overcome the spring 66 and in a rectilinear path and >in opposite directions the speeder spring 22J the piston is moved down wardly until the lower end of“ the member 32 85 to increase or decrease the force applied by said '52 expands when the memberl 3l is freed. strikes a stop shoulder B1. . Let it be assumed that the parts are positioned spring, a gear element mounted on said member ‘ _ to turn relative thereto about an axis extending i as shown in Fig. 3, the spring SB-holding the actuating member 32' upwardly against the stop 62 in the low speed position of the latter. ` ` Changes in the governor'speed vsettling may then be made by turning the wheel 4a, thereby moving. the member 3l up or down. In this movement, the lever 35 fulcrums on the then ilxed member I2 and the plunger 24 is moved in the same direc tion as the member 3| but through half the transversely of said path, said gear element hav ing arcuate rows of teeth arranged on opposite sidesthereof concentric with said axis, rack ele» ments meshing with said gear element on oppo- _ site sides ofl said member so as to have a rolling connection therewith, means guiding said ele ments for rectilinear movements parallel to said path; means for moving one of said rack elements back and forth to fulcrum said gear element about the other rack element and thereby move distance. When the member 3l is in its lower said member, and means for actuating said otherl limit position against the stop 49, the maximum element to fulcrum said gear element about speed setting obtainable by movement of thisv 60 rack the iirst rack element and correspondingly move member obtains. As the member is raised, the ' 4said member. control speed of the governor is decreased pro 3. A governor comprising a resilient speeder gressively. If the member 3l is raised above the -element, rotary speed responsive means opposing position at which the rod $1 engages the stop 59, the spring 53 is compressed in the continued rise 55 the force of said element, a 'member guided for movement in a rectilinear path and in opposite ' of the member to a high speed position which directions to increase or decrease the force apmay be limited by stops (not shown) associated plied by said element, a lever íulcrumed inter with the cable actuator. ~ Now if it is desired to increase the governor . speed setting quickly, fluid at a pressure sumcient to overcome the springs 23 and 66 is admitted to 60 j the cylinder 24 whereupon the member 32 is forced downwardly to its high speed position - (Fig. 1). The lever 35 will fulcrum on the mem ber 3i and the plunger 24 will be moved down wardly a- corresponding distance further com pressing the lSpeeder spring» 28 ~a iixed amountl With the member 82 in its new position, the member 3l may be moved up or down to _effect mediate its ends on said member to turn rela tive thereto about an axis extending transversely of said path, an actuating member pivotally con nected to one end of said lever and guided-for movement parallel to said 'path between two spaced positions, a spring urging said actuating member to one of said limit positions, power actuated means adapted when energized to over come said spring and move said actuating mem ber to said other limit position, a second actu- . ating member pivotally connected to the other ~ end of said lever, and mechanism selectively oper In this way, the governor is adjustable 70 able to 4adjust the position of said second actu , a further adjustment of the governor speed set ting. by the member 3| through a lower speed range when the member 32 is in its low speed position ' ating member progressively. ' . - ` - lDElIJBER'l` L. ZEIGLER.