US922250A - Valve-gear. - Google Patents

Description

E. L. BOWEN.

VALVE GEAR.

APPLICATION FILED JUNE 15, 1908.

Patented May 18, 1909.

3 SHEETS-SHEET 1.

INVENTOH WITNESSES ATTORNEYS- Nonms FEYERS INC.v LITHO WASHlNC-YON D C E. L. BOWEN.

VALVE GEAR. APPLICATION FILED JUNE 15, 1908.

Patented May'18, 1909.

a SHEETS-SHEET 2.

W/ TNE SSE S ATTORNEYS Noams PETERS INC. LrmO WRSH Nos '0 C E. L. BOWEN.

VALVE GEAR.

APPLICATION FILED JUNE 15, 1903.

Patented May 18, 1909.

3 SHEETS-SHEET 3.

I N VE N 70/? ldw'ardieeflozuen WITNESSES Mfg A TTOHNEYS Noams FEYERS. lNc. LlTfl0.. WASMINGYON. D. C

EDWARD LEE BOWEN, OF MGCOMB, MISSISSIPPI VALVE-GEAR.

Specification of Letters Patent.

Patented May 18, 1909.

Application filed June 1908. Serial No. 438,546.

To all whom it may concern:

Be it known that I, EDWARD LEE BOWEN, a citizen of the United States, and a resident of McComb city, in the county of Pike and State of Mississippi, have invented a new and Improved Valve-Gear, of which the following is a full, clear, and exact description. The invention relates to locomotive englnes and other double reversing engines,

and its obiect is to provide a new and im.

proved va ve gear which is simple, strongand durable in construction, easy to manipulate and arranged to utilize the motion of the cross head ofone engine to positively actuate the valve of the other engine, to provide a constant lead independent of the mam traveling movements of the valves, to reduce the effects of angularity to a minimum and to allow of conveniently applying the gear to doublel'eversing engines of differenti y The invention consists of novel features and parts and combinations of the same,

which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement as applied to a locomotive, parts being broken out and parts being in section;

Fig. 2 is a plan view of the same, the covers *of the steam chests and one of the valves being removed; Fig. 3 is a side elevation of the Improvement showing the parts in a different position Fig. 4 is a sectional plan view of the improvementon the line 4"4 of Fig. 5; Fig. 5 1s a transverse section of the same on the line 55 of Fig. 4; and'Fig. 6 is a side elevation of one of the slides and its rods.

The reversing engines A and B of the usual construction are connected at their cross heads A, B by connecting rods C, D with depending arms E, F of rock shafts E and F, extending transversely and journaled in suitable bearings in the frame G of the engine.

The rock shafts'E and F are providedwith short depending arms E and F connected by rods H and H with the vertical members of'bellcrank levers I and I, the said-levers with itheir pivots being arranged to be bodily oscillated andhaving their horizontal members pivotally connected withhorizontally-disposed arms J, K, attached to the inner ends of the shafts J and K journaled on the engine frame G. The outer ends of the shafts J and K are provided with de pending armsJ K connected by links J, K with the stems L, N of the slide valves L and N, mounted to reciprocate in the steam chests A and B of the engines A and B.

The rock shafts E and F are also provided with another set of depending arms E F connected by rods 0, O with the rods P, P

mounted on the pivot pins 1 I of the bell crank levers I, I, and the said rods P and P are pivotally connected at their lower ends with blocks Q, Q (see Fig. 5) mount-ed to move in slides R, R, having their trunnions R R extending transversely and journaled in suitable bearings arranged on the engine frame G.

The slides R and R" are under the control of the engineer in charge of the locomotive in the usual manner, and for this purpose the slides R, R are provided with upwardlvextending arms S, S connected by rods T, T with the arms U, U of the tumbling shaft U, journaled in suitable bearings in the en'- gine frame G and provided. with an upwardly-extending arm U connected by the reach rod V with the usual reversing lever unthe control of the engineer. By the arrangement described the engineer in charge of the double reversing engine can swing the slides R and R into the required position for forward or reversingmovement.

Now by the arrangement described it will be seen that the rock shaft E has connection with the shaft J of the engine A by way of the rod H, bell crank lever I and arm J so that the same lead is given to the valve L when the engine is running, but the regular traveling motion of this valve L is received from the cross headB of the other engine B by way of the rock shaft F, the rod 0 and the rod P connected with the bell crank. lever I and connected with the bloc-k Q in the slide R. Thus the lead for the valve L of the engine A is obtained from the cross head A of the engine A, while the regular travel given to the valve L' is derived from the cross head B of the engine B. In a like manner the lead of the valve N" is derived fromthe cross head B by way of the rock shaft F,-rod H, bell crank lever I, and arm K of the'sh'aft K, while the regular travel of the valve N is ,obtainedfrom the,cross head A of the engine A by way of the rock 5 shaft E, rod-O, rod P fulcrum-ed on the bell ders is governed by tilting of the slides R and R actuated from the reversing lever manipulated by the engineer. Themove ments of the several parts are positive and a uniform lead is maintained no matter at what point the steam is cut off.

By the arrangement described the usual counterbalance spring and eccentricsare.

entirely dispensed with,'and only oneadjustment is necessary to properly set the valve gear, that is, to adjust the valve stem for the valve to travel evenly over its ports. It willalso be noticed that the valve gear has no connection with the axle of the drivers, and hence the gear is not affected by vertical .movement of the axle and the latter may be removed without disturbing the valve gear,

Having thus described my invention, claim as new and desire to secure by Letters Patent:

1. A valve gear for double reversing engines, comprising shafts having right angle arms, of which the vertical ones are connected with the valves of the engines, bell crank levers having their horizontal arms connected with the horizontal arms of'the 7 0 said shafts, rock shafts connected wit-lithe cross heads of'the engines so as to be rocked thereby, said rock shafts being connected with the vert-icalarms of thQsaid bell crank levers, slides under the control of the opera- 5 tor, slide blocks in the said slides, rods connecting the said blocks with the said bell crank levers at the fulcrums thereof, and

means connecting the rock shaft actuated from one engine with .the side block rod for the valve of the other engine.

2. A valve gear for double reversing -en-.

gines, comprising shafts having right angle arms, of which the vertical ones are connected with the valvesof the engines, bell crank levers having their horizontal arms connected with the -liorizontal arms of the said shafts, rock shaft-s connected with the. cross headsof the engines so as to be rocked thereby ,said rock shafts being connected with the vertical arms of the said bell crank levers, slides under the control of the operator; slide blocks in the said slides, rods connecting the said blocks with the said bell crank levers at the lulcrums thereof ,arms depending from the said rock shafts, and rods connecting the depending arm of the rock shaftactuated from one of the engines with the slide block rod for the valve of the other-engine.

valve gear for double reversing engines, comprising shafts having right angle. arms, of whlch the vertical ones are connect ed with the valves of the engines. bell crank levers having their'horizontal arms connected with the horizontal arms of the said shafts. rock shafts connected with the cross heads of ,the engines so as to .be rocked thereby, said rock shaft-s being connected witlfthe vertical arms of the said bell crank levers, slides under the control of the operator, slide blocks in the said slides,rodsconnecting the said blocks with the said bell crank levers at the fulcrums thereof, arms depending from the said rock shafts, rods connecting the depending arm of the rock shaft actuated from one of the engines with the slide block rod for the valve of the other engine, and manually-emitrolled means for rocking the said slides in unison and in opposite directions.

4. A valve gear for double reversing cngmes, comprising rock shalts, means connectmg the said rock shafts with the cross 'heads of the engines, shafts having horizontal and vertical arms, the vertical arms being connected with the engine valves, bell crank levers having horizontal and vertical mem bers, the horizontal members being connected with the horizontal arms of said shafts,

and connections between the rock shal'tsand the vertical. members of said bellcrank levers for controlling the lead of .the valves.

5. A valve gear for double reversing engines, comprising rock shafts, means connecting the said rock shafts with the cross heads of the engines, bell crank levers, shafts having. arms connected with the engine valves, the said shafts also having arms connected with the bell crank levers, connections between therock shafts and the said bell crank levers for controllmgthc lcadof the valves, slide-ways under the control of the operator and. having trunnions journaled in m the engine. frame, blocks mounted hearings to slide in said slide-ways, slide block rods.

connecting the said blocks with the bell crank levers, and connections between the rock shaft actuated from the cross head of lltl one engine and the slide block rod connected with the valve of the other engine.

6. A valve gear for double reversmg engines comprising bell crank levers, shafts having arms connected with the valv'csol the engines and arms coifnectcdwith the bell. crank levers,-rock shafts conncctcdwith the cross heads of the engines so as to be rocked thereby, said rock shafts being connected with the hell fcranklevcrs. manually 0011- trolled f ales, blocks slidable thcreim-and connections between the said blocks and'the bell crank levers.

7. A valve gear for'double reversing engines, comprising bell crank levers, shafts having arms conneteed with the valves of the engines and arms connected with the bell crank levers, rock shafts connected with the cross heads of the engines so as to be rocked thereby, connections between the rock shafts and the bell crank levers, slide-ways mount ed to rock, blocks slidable in said slide-ways, rods mounted on the pivots of the bell crank levers and connected with said blocks, and connections between the said rock shafts and the said rods.

8. A valve gear for double reversing engines, com rising manually controlled slide- Ways, bloc is slidable therein, bell crank le 'vers, connections between the bell crank levers and the engine valves, rods mounted at one end on the pivots of the bell crank levers and pivotally connected at the other end with the said blocks, and means connected with said rods for actuating the block in the slide-way for the valve of one engine from v the cross head of the other engine.

v 9 A valve gear for double reversing engines, comprismg slide-ways having trunmons Vjournaled 1n bearings in the engine frame,

the slideways being provided with upwardly extending arms, means under the control of the operator and connected with said arms for adusting the slideways, blocks slidable in said slideways, bell crank levers movable bodily with their pivots, connections between said levers and the engine valves, slide block rods mounted at one end on the pivots of the bell crank. levers and pivotally con nected at the other end with the said blocks, rock shafts connected with the cross heads of the engines so as to be rocked thereby, arms on said rock shafts, rods connecting said arms with the said bell crank levers, a second set of arms on said rock shafts, and rods connecting said arms with the slide block rods, the rod connected with the arm of the rock shaft actuated from the cross head of one engine being connected with the slide block rod for the valve of the other engine.

In testimony whereof I have signed" my name to'this specification in the presence of two subscribing witnesses.

EDWARD LEE BOWEN. 'itnesses JAMEs DAVIS FRITH, RICHARD CHARLEs PENDEGRAST;

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