US1078277A - Valve-gear. - Google Patents

Description

.A. E. HALL.

VALVE GEAR.

APPLICATION FILED JAN.27, 1911.

1,078,277. Patented Nov. 11,1913.

2 SHEETS-$113111 l.

r Inventor I by Attorneys A. E. HALL.

VALVE GEAR.

APPLICATION FILED JAN. 27, 1911.

Patented Nov. 11, 1913.

v 2 SHEETSSHEET 2.

jaz/i /m' ggg Witnesses I by 6 E Z Attorneys COLUMBIA PLANOURAPH w ADELBERT E. HALL, OF BAYCITY WES.T,- MICHIGAN.

VALV'E- GEAR.

Specification of Letters Patent.

Application filed January 27., 1911.] S 1ialNo. 605,043.

To all whom it may concern:

Be it known that I, ADELBERT E. HALL, a citizen of the United States, residing; at Bay City West, in the county of Bay. and State of :Michigan, have invented a new and useful Valve- Gear, vof which the following is a'specification. I

The present invention relates to improvements in valve gears for engines, and more particularly for that-class of gears used upon locomotives, the primary object of the present invention being the provisionof a. novel means for regulating the throw of the valve so that the desired speedand power may be imparted to the pistons and drive wheels, the parts-being so located as to not be affected by ,the movable; portion of the boiler due to the inequalitiesuin the road and surface. conditions.

l/Vith the foregoing and other objects in view which-willappear as-vthe description proceeds, the invention resides inthe combination and arrangement of parts-and in the details of construction hereinafter dew scribed and claimed, it ."loeing'v understood that changes in the precise embodiment of the invention herein disclosed-canbe made. within the scope of whatis-claiined with-v vention.

In the drawings Figure 1 is a side elevation of the valve gear asapplied to .a 1000-. motive. Fig. 2 isa top plan'view of the same, showing it applied to both of the valves. Figs. 3 and 4. are. detail views-of the slotted end and mounting of the: link lever-with the adjacent partsof the gear. Fig. 5. is an enlarged detail vi'ewof the interlocking shafts carrying the upstanding arms, looking in the direction of the arrow Fig. 2.

Referring to'the drawings, the numerall designates the cross head of the power piston of the locomotive and which is slidably mounted in the usual frame 2' whichhas upstanding from the rear end, the standard or frame 3 which extends from one frame 2 at one side of the locomotive at a point below the boiler to. the. framev 2 atwthe opposite side. The respective valves ewhich are of usual. construction, are. operated through the rods 5, and'lina manner as will presently appear. j

Connected to the horizontal portion of theframe 3 one. upon. each side thereof, arethe twobrackets' 6, eachone of which the arc-shaped slot 13 thereof.

or ear 14: which is carried by the cross head l'is operably connected to the lower end of isprovided with the curved rearwardly extendinglug 6C, Connected to the rear face.

and centrally of the horizontal portion of theframe 3 is av journaling lug 8, which has p votally connected thereto, intermediate of its. ends for. horizontal swinging movement,

the double lever or-walkingbeam 9 which ismanually controlled through a rod 10 eX- tendedtothe cab (not shown) of the locomotive. Thus through the rod'lO, the. said doublelever '9 maybe oscillated'as desired and maintained in the selected position.

Disposed for oscillatory movement with: in the journaling end,6 of the bracket 6 is a stud orpin 11 which is carried by the elongated plate. 11, said plate 11 being 0on1 nectedto its pin 11"forming the axis for. the. lever link 12 which as. shown in Figs. 3

and .4: is maintainedin its relative swinging position by the arm ,6 and the connection of the platellto the upper end centrally of the lever link. 12 throughthe medium of the shortlink 15, sothat the lever link 12 is oscillated, with the stud 11 its axis, by the cross headl. out departing from the splrit of the lIl- Slidably mounted for movement within the arcrshaped'slot 13 so as to. regulate the throw of the .respectivevalves 4, as will later appear, is a.block,16, provided with a stud 17 which is pivotallymountedwithin the apertured enlargement 19 of'the rod or link 18, the forward endlS of this rod beingpivotally connected to thelower end of-thelink 20, while the. upper. end;of the link20 .is pivotallyconnected to the forward curved end of the bell-crank lever 7 which is pivotedtat 7 to the extension arm 6 of its respective bracket. 6..

The respective ends of the double lever or'walking: beam 9 are conncctedby means of the balland socket joints or other pivotal connections to. thelower endsof the shortarms .7 ofthebell-crank levers 7 By this construction, the movement of thewalk ingbeam or. doublelever 9 to the opposite positionto that shown inFig. 2, will cause the curved end of the, bell-crank lever 7 upon the right hand side of the locomotive to be elevated so. that the block 16 will be movedzupwardly within the arc-shaped' slot 13.to, a point. nearer. the stud l1, andas the arm 7 of the bell-crank lever 7 upon Patented Nov. 11, 1913.-

The lug the lefthand side of the locomotive is disposed in an opposite inclined position to the arm 7 a at the right hand side, the bellcrank lever 7 controlled thereby will operate the block 16 at the left hand side to be elevated within the arc-shaped slot 13 of its respective lever link 12, thus the manipulation through the rod 10 of the walking beam 9 will simultaneously actuate both of the respective bell-crank levers 7 and thus simultaneously adjust the block 16 within the arc-shaped slot 13 of both of the lever links 12.

Carried upon opposite sides from the frame of the locomotive, to the rear of the respective frames 2 thereof, are brackets 21,

in which are mounted for oscillation, the respective reduced pintles'or stub shafts 22 of the valve controlling transversely dis- 24 of the bar 23 is adjacent to and upon the same side of the locomotive as the arm n 25 of the bar 23'.

valves 4.

The rear end of the two rods 18 are pivotally connected to the two upstanding arms 24, thus permitting the lever links 12 to oscillate'the rods 18 and through the arms 24 simultaneously oscillate the respective bars 2328, each of which in turn oscillates its respective arm 25, which has pivotallyconneeted to its upper end, the rod or link 27 which is extended forwardly and along side of the rod 18. The forward ends of the respective rods or links 27 are pivotally connected by a pin 27 intermediate of the ends thereof and within the link 26, said link 26 being swingingly mounted upon thejstud 26 carried by the plate 11, all as clearly shown in Figs. 3 and 4. A pin 28 pivotally connects the inner end of the rod 28 to the lower end of the link 26, and as the other end of the link 28' is pivotally connected to the rod 5 of the valve 4, it is evident that the reciprocation of the respective arms 25 will impart the desired reciprocation to the respective From the foregoing description, taken in connection with the drawings the operation of the present valve gear is readily understood, but briefly stated it is as follows:

'Assuming the parts to be in the position as shown in Fig. 1, and it is desired to limit or shorten thethrow of the valve 4 at the left as viewed in Fig. 2, the rod 10 is moved to push upon the walking beam 9 were so that the arm 7 at the right Fig. 2, is moved forwardly to elevate the curved end of the bell-crank lever 7, this action through the link 20 lifting the forward end of the rod 18 and consequently sliding the block 16 upwardly within the arc-shaped slot 13 and thus decreasing the leverage or movement of the block 16 within the slot 13, so that the reeiprocatory movement imparted to the lever link 12 will be imparted to the rod 18, but such reciprocation or stroke will be shorter than if the parts were in the position as shown in Fig. 1. This movement of the rod 18 will rock the arm 24 upon the right hand side of the locomotive and through the bar 23 o crate the arm 25 upon the left hand side 0 the locomotive which through the links 27, 26 and 28, at the left hand side, will throw or move the valve 4 at the left of the locomotive as desired. At the same time the valve 4 at the right hand side of the locomotive as viewed in "Figs. 1 and 2 will be similarly actuated through the bell-crank lever 7 and its adj acent parts at the left of the locomotive.

What is claimed is:

1. The combination with an engine frame, the pistons, the cross heads and the cylinders, of a valve gear, including a pair of brackets one to each cylinder, a lever pivoted to each bracket and having its lower end operably connected to its respective cross head, a belL crank lever pivoted to each bracket, a rod operably connected to the bell-crank lever,

coacting means carried by said rod and one end of the bell-crank lever whereby the range of movement of the rod may be varied and whereby said rod is operably connected for operation from the first lever, and a valve operably connected to said rod, the

throw of said valve being controlled by the position of the rod relatively to the first lever. V

2. The combination with an engine frame, the pistons, the cross heads and the cylinders, of a valve for each cylinder, a bracket carried by the frame, one to each valve, alever provided with a slotted upper end having itslower end operably connected to its respective cross head, two bell-crank levers, one pivoted to each bracket intermediate of its ends, a rod operably connected to one end of each of the bell-crank levers and slidably connected intermediate of its ends to the slotted end of the first lever, a pair of bars journaled transversely of the engine frame, an arm carried at one end of each bar and operably connected toits respective rod, another arm carried at the opposite end of each of the-said bars, and means friroperably connecting the last mentionedarins to the valve.

3. The combination of an engine frame, the pistons, the cross heads and the cylinders, of a valve for each cylinder, a bracket carried by the frame, one to each valve, a bell-crank lever mounted in each bracket, a lever link having its lower end operably connected to its respective cross head, the upper end of said lever being pivotally connected to its respective bracket for reciprocatory movement, the upper end of said lever bemg pro vided with an arc-shaped slot therethrough, a block slidably mounted in said slot, a rod connected to said block and having one end. operably connected to its respective bellcrank lever, a bar journaled transversely of the frame, said bar being provided with an upstanding arm and one end operably connected to its respective last mentioned rod, a second arm carried by the bar at its opposite end, and means for operably connecting the last arm to the valve.

4:. The combination with an engine frame, the pistons, the cross heads and the cylinders, of a valve for each cylinder, a bracket carried by the frame, one to each valve, a bellcrank lever mounted in each bracket, a lever link having its lower end operably connected to its respective cross head, the upper end of said lever being pivotally connected to its respective bracket for reciprocatory movement, the upper end of said lever being pro-V vided with an arc-shaped slot therethrough, a block slidably mounted in said slot, a rod connected to said block and having one end operably connected to its respective bellcrank lever, a bar journaled transversely of the frame, said bar being provided with an upstanding arm at one end operably connected to the last mentioned rod, a second arm carried by the bar at its opposite end, a link pivotally connected to the lever link near the upper end thereof, a rod connecting the upper end of the last mentioned arm of the bar with said last mentioned link, and another rod connecting the link to the valve.

5. A valve gear, including a frame, a reciprocatory cross head, mounted in the frame, a reciprocatory valve, a bracket carried by the frame, a lever having a slot in its upper end connected at such slotted end to the bracket for swinging movement and having its lower end operably connected to the cross head, a block slidably mounted in the slotted end of the lever, a rod connected intermediate of its ends to said block, a bell-crank lever connected to the bracket and having one end operably connected to one end of the rod, manually operated meansv v for actuating the bell-crank lever to slide the block within the slot of the slotted lever, and means for operably connecting said rod to the valve to control the throw of the valve. Y

6. A valve gear, including a frame, a

reciprooatory cross head mounted in the frame, a reciprocatory valve, a bracket carried by the frame, a lever havinga slot in its upper end connected at such slotted end to the bracket' for swinging movement and I having its lower end operably connectedto the cross head, a block slidably mounted in the slotted end of the lever, a rod connected intermediate of its ends to said block, a bellcrank lever connected to the bracket and having one end' operably connected to one end of the rod, manually operated means for actuating the bell-crank lever to slide the block within the slot of the slotted lever, a bar journaled transversely of the frame, an arm mounted upon each end of said bar, one ofsaid arms being operably connected to the remaining end of the rod, a short link pivotally connected to the upper end of the slotted lever for independent movement thereof, and two rods pivotally connected to said link and extending in opposite directions, one of said rods being operably connected to the remaining arm of the bar, while the other arm is operably connected to the valve.

7 A valve gear, including a frame, a reciprocatory cross head mounted in the frame, a reciprocatory valve, a bracket carried by the frame, a lever having a slot in its upper end connected at such slotted end to the bracket for swinging movement and having its lower end operably connected to the cross head, a block slidably mounted in the slotted end of the lever, a rod connected intermediate of its ends to said block, a bellcrank lever connected to the bracket and having one end operably connected to one end of the rod, manually operated means for actuating the bell-crank lever to slide the block within the slot of the slotted lever, a bar journaled transversely of the frame, an arm mounted upon each end of said bar, one of said arms being operably connected to the remaining end of the rod, a short link p-ivotally connected to the upper end of the slotted lever for independent movement thereof, tw'o rods pivotally connected to said link and extending in opposite directions, one of said rods being operably connected to the remaining arm of the bar while the other rod is operably connected to the valve, 7

Copies of this patent may be obtainedfor five cents each, by addressing the Commissioner Patents,

Washington, D. G. i

position of the slot of the

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