US1119153A - Pumping mechanism for oil-engines. - Google Patents

Description

L. B. HARRIS.

PUMPING MECHANISM FOR OIL ENGINES.

APPLICATION FILED MAY 19 1913.

Patented Dec. 1, 1914.

4 SHEETSSHEET 1.

8 wve wfoz L L O/VA A D 5. h/P/P/S. $1 flamma- L. B. HARRIS.

PUMPING MECHANISM FOR OIL ENGINES.

APPLICATION FILED MAY 19, 1913.

Patented Dec. 1, 1914.

4 SHEETSSHEE'I 2.

L. B. HARRIS.

PUMPING MECHANISM FOR OIL ENGINES.

APPLICATION TILED MAY 19, 1913.

Patenbed Dec. 1. 1914.

4 SHBET8- SHEET 3. 68

L. B. HARRIS. PUMPING MECHANISM FOR OIL ENGINES.

APPLICATION FILED MAY 19, 1913.

Patented Dec. 1, 1914.

4 SHEETSSHEBT 4.

LEONARD B. HARRIS, OF WATERTOWN, NEW YORK.

PUMPING MECHANISM FOR OIL-ENGINES.

Specification of Letters Patent.

Patented Dec, 1, 1914.

Original application filed October 16, 1912, Serial No. 726,045. Divided and this application filed May To 11! whom it may concern:

Be it known that I, LEONARD B. HAnms, a subject of the King of Great Britain. residing at \Vatertown, in the county of Jefferson and State of New York, have invented new and useful Improvements in Pumping Mechanism for Oil-Engines, of which the following is a specification.

My present invention relates to certain new and useful improvements in oil pumping mechanism especially designed for feed ing fuel-oil to internal combustion engines of the, Diesel type, the subject matter of the present invention being a division of my pending application Serial No. 726,045, filed October 16, 1912.

One purpose of the invention is to provide simple manually operable and also governor-actuated means for varying at will. and also varying automatically through connections with the engine governor. the quantity of fuel oil fed to the engine cylinders.

Another purpose of the invention is to provide simple means for manually operat mg the pump-plungers to initially fill the piping system leading to the engine cylinders.

Another purpose of the invention is to provide a simple and compact plural arrangement of pumps adapted to be alternately and successively operated through connections with the engine shaft to pump fuel oil successively to the several engine cylinders.

The invention has in view other more or less important features all of which will be specifically described in the accompanying specification.

In order to enable others skilled in the art to understand, make and use my said invention. I will now proceed to describe the same in detail, reference being had for this purpose to the accompanying drawings.

wherein Figure 1 is a front elevation of one form of pumping mechanism constructed according to the present invention. Fig. 2 is a side ele\ ation showing the oil supply to the engine-cylinder and showing also the connection between the engine ggvernor and pumping mechanism. Fig. 3 is an enlarged detail view, partly in section, of the pump Serial No. 768,484.

cylinders and their plungers. Fig. 4 is an end view of the same. Fig. 5 is a modified arrangement of means for adjusting the plunger operating mechanism. Fig. (3 is a vertical section through one of the engine cylinders and showing the driving connection betwen the engine shaft and the pumping mechanism. Fig. 7 is a detail longitudinal section of the control lever shaft showing the lost-motion connection with its levers. Fig. 8 is a section on the line 8-8 of Fig. 7. Fig. 9 is a detail perspective view of the bushing carried by the control lever.

In the accompanying drawings and the following description I have elected to illustrate and describe my improved pumping mechanism as associated with a twocylinder engine, but obviously the same may be embodied in an engine having more or less cylinders without departing from the spirit of the invention, the present showing being merely by way of example.

{efcrring to the accompanying drawings wherein like reference numerals indicate the same parts throughout the several views, the numeral 1, designates the base member or casting of the engine. which as above indicated may be suitably designed for any desired number of cylinders depending upon the horse-power to be developed, and upon this base member the engine cylinders 2, are mounted. As more clearly illustrated in Fig. 6 the en ine cylinders as here shown are of stepped orm, that is to say each cylinder has alined ,bores of different diameter, the smaller bore 3 being the power or working cylinder of the engine, and the larger bore 4 being the scavenging cylinder and compressed air motor starting cylinder ('(llllbined. Within these two cylinders is fitted a stepped piston having heads 5 and (i con responding in diameter to the bores 23 and 4 respectively, the head 5 being the working or power cylinder and the head 6 being the combined starting and scavenging piston. The connecting rod 7 is connected by a crank 8 to the engine shaft 9 in the usual way. The fuel oil is fed into the top of each cylinder through an atomizer controlled by an atomizer valve 56. carried by a stem 57, the valve being lifted at proper intervals by means of levers 38. the said atomizer valve 56 being normally held to its seat by me. as o? a coiled spring 58* acting upon the levers 58.

In the present instance the pumping mechanism is shown as mounted upon one end of the base member, but obviously the same may be otherwise mounted.

The fuel-oil, as stated, is fed to an atomizer located in the head of each engine cylinder, a separate plungenpump being employed to deliver oil to each atomizer. In the present instance I have shown a pair of pumps, the plunger-s of which are actuated alternately by a common operating element, it being always understood of course, that the number of pumps employed is dependent upon the number of cylinders going to make up the engine. In the instance shown, and as more clearly illustrated in Figs. 1 and 3, each pump, there being two shown, comprises a vertically arranged cylinder 61 in which is reciprocally mounted a plunger 62, the latter being normally held in retracted position by means of a coiled spring 68 coilediabout the lower end of a stem extension (34 ot' the plunger, said extension passing through a guide (35,Fig. 1, between the end of which guide and a nut 66, carried by the stem extension, the said coiled spring is mounted, the nut (56 serving to adjust the tension of the spring. The pump cylinder 61 is coupled at its upper end with an intake pipe 67 leading from the fuel oil supply tank (55, through pipe 68*, as more clearly shown in Fig. 2, and the oil is delivered to the atomizer of the engine cylinder or cylinders through the delivery pipe or pipes 69 leading from each pump cylinder 6], suitable check valves 69, 69, being provided in the pipes 67, and a. further check valve 69 being arranged in each pipe 69 to effect proper operation of the pumps, all as more clearly shown in Figs. 1 and 3. For convenience the intake pipe 67 is connected at its opposite ends respectively to the two pump cylinders as shown, and the oil feed pipe 68 leading from the oil tank 68 is connected to the pipe 67 by means of a T-coupling 70. The stemof each of the extensions 62 is provided intermediate its ends with a yoke 71 as more clearly shown in Figs. 1 and 4, through which yoke passes one arm 72 of a bell crank lever 73, the longer arm 74 of the bell crank lever being arranged to be acted upon by a rotary cam 75 mounted upon a shaft 7 6 driven from a shaft 77, the latter being driven from the main shaft 9 of the engine, as shown in dotted lines, Fig. 2, and in full lines in Fig. 6.

As before indicated I have, in the present instance, shown two pumps, and I have provided a separate and distinct actuator for operating the plunger of each pump, the said actuators being duplicates of one an other, and so arranged that the cam 75 will alternately engage the actuators to alter nately and successively actuate the pump plungers 62. As will be seen by referring to Fig. 1 the two bell crank actuators 73 are arranged opposite each other, the arms 7i being located in parallelism, and on op posite sides of the cam shaft 76 so as to be alternately engaged by the cam 7 5 carried by said shaft. It will be perfectly apparent that the amount of oil delivered to each of the engine cylinders will depend upon the length of stroke of the oil feed pump plungers 6:2, and I have provided novel means for varying the length of stroke of these plungers. I have also provided a lost motion connection between the pumping means and the manual control lever of the engine whereby the oil feed pumps may be set in motion when the manual control lever is moved to a certain position, but which oil feed pumps will remain idle until the manual control lever has been moved to the proper position, the initial movement of the control lever having no effect on the operation of the oil feed pumps, this initial movement of the control lever serving merely to admit compressed air to the combined scavenging and compressed air starting motors, as clearly set forth in my co-pending application hereinbefore referred to.

Each of the bell crank levers 73 is mounted to swing on a fulcrum-pin 7 8 carried by a laterally shiftable slide plate 79, the said slide plates, of which there are two, one for each bell cranklever, being free to slide in dovetailed guides 80. The movement of these slides with their fulcrum pins and bell crank levers is effected through the medium of two worm spindles 91 and 82, each spindle carrying a pair of right and left hand worms S3 and 84, respectively, each of which pair of worms is in mesh or gear with a-worm sector 85, the sectors revolving on the pins which carry the bell crank levers '73, so that whatever movement is imparted to the sectors will likewise be imparted to the laterally shii'table slide plates 79 which carry the bell crank levers, so as to move the latter to bring their arms 74 toward and from each other or toward and from the cam 75 on the shaft 76. The worm sectors 85 are arranged to revolve on their fulcrum pins 78 and roll. as pinions on a rack depending upon which of the worm spindles 81 or 8:3 is stationary, the stationary worm forming the rack, thereby causing the fulcrum pins 78 with their bell crank levers 73 to move away from each other or closer together according to the direction of revolution of the worm spindles 81 or 82, in order to increase or diminish the stroke of the fuel pump plungcrs 62. The shorter arm 72 of each bell crank lever has a sliding connection with an oscillating I made. The worm spindle 81 may be rotated to efi'ejct proper movement of the bell crank lever 73 and the slide plate 79 by which it is carried by means of a connection. with the engine governor 87, as more clearly shown in Fig. 2, this being accomplished by providing the spindle 81 with a pinion 88 that is in mesh with a rack 89, Fig. 1, carried by a vertically moving rod 90 connected at its upper end to a lever 91 having a suitable connection with the governor 8 so as to move up or down depending upon the speed of the engine, and through the rack and pinion connection with the worm spindle 81 and its worms and Worm sectors 83, 85, move the bell crank levers automatically toward and from each other to automatically control the delivery of fuel oil to the engine cylinders or their atomizers, the leveri l being normally pulled in a downward direction by means of the coiled spring 91". I also provide an operative connection between the manual control lever 41 of the engine, and the said bell crank levers 73, so as to move said levers closer together or farther apart depending upon the position of said control lever, so that the greater the movement given to this lever the nearer together the arms'74 of thebell crank lovers will be brought and the greater the supply of oil pumped to the engine cylinders. This connection between the manual control lever and the bell crank levers consists of a crank arm 93 carried by the end of the shaft 42 upon which the control lever 41 is mounted, said crank arm 93 having a link connection 94 with a bell crank lever 95 to the longer arm of which is pivoted a rack 96 that meshes with a pinion 97, Fig. 1, fixed on one end of the worm spindle 82, the connections referred to being shown in dotted lines in Fig. 2. The lever 3 is preferably arranged on a dead center so that whichever way the control lever 41 is moved, that is to say to either ahead or astern position, the rack 96 will always move in the same direction. Ply reason of this construction it will be seen that whenever the manual control lever 41 \is moved to bring its locking dog into en gagement with the second notch in the dial plate 45 with which the control iever co- ()lKtr'zltQS, the worm spindle throu h its and pini'm coi'mect' 96 and 9(, bell 5 am' link and. ank connections 94 and 3 3, i f-ii the shaii't 42 of the control lever, will hr .he arms of the bell crank lovers we 3 togeth r so as to be engaged and opera. d by the cam on the aha ft 76, the distance between the arms 74 and the bell crank lever 73 varying, depending upon the amount of movement given the control lever 41, it being understood, of course, that the dial 46 about which the control lever moves, has several fuel feeding positions to any one of which the control lever may be moved and locked and each position representing a different silpply of oil, as for instance initial fuel feed, half fuel feed, and full fuel feed, these 'posiw tions being duplicated on opposite sides of the dial so that the control lever may be set to proper position for running the en gine ahead or asterni The crank 93 is provided with a bushing 98, as more clearly shown in Figs; 7, 8,- and 9, at the point where it is mount-ed upon the control lever shaft 42, said bushing having a substantially semi-circular cut out portion partially surrounding the said shaft and terminating at its ends in two shoulders or abutments 99, with either one or the other of which a key 100 engages, said key being carried by the shaft 42, so that during the initial movement of the control lever in either direction, that is to say to the right or to the left, no movement will be imparted to the crank arm 93, and its associated mechanism leading to the fuel feed pumps. By this means I am able'to-move the control lever to the first notch position on the dial 46 in order to initially start the engine by compressed air power and without feeding fuel oil to the engine cylinders or opening the atomizer. Immediately, however, the control lever is moved past the first notch position on the dial the key 100 will engage one or the other of the shoulders 99, depend ing upon the direction of movement of the control lever, the crank arm 93 will then begin to turn with the control lever shaft 42 to move the bell crank levers 73 in position for engagement with their actuating cam 7 5, it being understood that when in normal position, or in the idle position of the parts, the levers will be so widely separated that the cam 75 cannot engage the arms 7-1 and there will, therefore, be no actuation of the pump plunger-s.

If it is desired to alter the position of the bell crank levers 73 without changing the position of the manualcontrol lever, this may be effected by means of .a manually operable controller shown in the present in-,

ment of the bell crank levers 7 3, relative to the actuating cam 75 and the rack then again allowed to drop into engagement with its pinion 97. A spring 96 normally acts upon the rack 96 to hold the same in mesh with its pinion. This means for adjusting the position of the bell crank levers independently of the manual control lever, will be found to be of advantage also in case of leakage of oil in the pump packing or glands, or in the event of a heavier grade of oil being used, such as will require a greater stroke of the oil feed plungers.

In addition to the engine driven cam 75 for operating the oil feed pumps, I have provided a manually operable cam for operating the pumps through the arms 74 of the bell crank levers 73, this manually operable cam being employed primarily to fill up the oil piping system leading from the fuel feed pumps to the atomizers, before starting the engine, in case these pipes should have be come empty or through loss of pressure caused by leakage while the engine has been standing idle for any considerable time. This hand operated means referred to consists of a cam 102 mounted upon a shaft 10?, located below the shaft 76 and which shaft 103 carries a crank arm 104 upon the lower end of which is mounted a handle 105, all as more clearly shown in Figs. 1 and 2. As will be apparent, rotation of the shaft 103 will cause its cam 102 to alternately engage the arms 74: of the bell crank lever 73 in order to actuate the pump plunger-s, and thus feed fuel oil through the system of pipes leading to the engine cylinders o" their atomizers 56.

The charges of fuel oil are admitted to the working cylinders of the engine through an atomizer 50, Fig. (3, the fuel oil being sprayed or atomized under pressure upon the lifting of the valve 57, said valves being lifted at regular intervals through the medium of the levers 58. there being two such levers associated with the stem of the valve 57 when the engine is of the reversible or marine type, but only one such lever when the engine is of the straightaway or stationary type. ()ne ol the levers 58 of the two referred to is employed to hit its \'al\e when the control lever is set for running the engine ahead and the other of said levers is employed when the control lever is set for running the engine aslern The operating mechanism for these levers is so arranged that one or the other will be automatically set in position tor operation by the movement of the manual control lever, but as this mechanism l'orius no part of the. present invention. the same forming the subject matter of a separate application, Serial Number 'ibtlfJJl'. liled May 21', 1913. it need not be described in de a l herein.

In Fig. 5 I have shown a slightly modified forin of adjusting means for the bell crank levers that control the operation of the pump plunger. Instead of employing the sectors 85 I employ internally threaded sleeves 85 having threaded engagement with oppositely threaded portions 84? mounted upon the shafts 81 and 83* 82 the said sleeves 85 that cooperate respectively with the threaded portions 83 84*, being interconnected by arms S6 and the bell crank levers 74* for actuating the pump plungers being carried by said arms 86".

From the foregoing description taken in connection with the accompanying drawings, it will be seen that I have provided a simple arrangement of -fuel oil pumping mechanism with controlling means associated therewith, whereby the quantity of fuel oil fed to the engine cylinders or their atomizers may be controlled manually from the control lever or manually by an auxiliary control device, either of these devices being optionally manipulable, and I have also provided an automatic control mechanism having a connection with the engine governor for automaticali y varying the quantity of oil fed to the engine cylinders or their atomizer-s during the running of the engine.

lVhile I have herein shown and described a preferred embodiment of my invention, I do not wish to be understood as limiting my self to the precise details shown and described except as I may be limited by the ap-' pended claims.

What I claim is:

1. In an internal combustion engine, pumping mechanism for feeding fuel oil to the cylinders of the engine. comprising a pair of pump cylinders. and cooperating pluugcrs. a laterally adjustable actuator for each of said plungcrs. means for successively o mrating said plunger actuators, and means for adjusting the actuators toward and from their operating means and relative to said plungers for adjusting the stroke of the latter.

.2. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders comprising plunger pumps. a laterally adjustable actuator for each of the. pump plungers, means for successivcly operating said plunger actuators, and manually operable means for moving the said plunger actuators laterally into and out of cooperative relation with the operat ing means and relative to said plungers for adjusting the stroke of the latter.

3. In an internal combustion engine, pumping nr-chanism for feeding luel-oil to the engine cylinders, embodving pump cyliuders and cooperating pluugers arranged in spaced parallel relation, an oscillating actuator for each plunger, each actuator having a part in slidable engagement with its plunger and said actuators being arranged between the pump lungers, means for simultaneously adjusting the actuators toward and from each other to vary the stroke of the plungers, ind means for alternately operating the actuators.

4. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, a laterally adjustable actuator co o-pcratively associated with each of the pump plungers and having a part in sliding engagement therewith, power operated means for successively operating said plunger actuators by engaging another part thereof, and an independent manually operable means for operating said actuators.

5. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, a laterally adjustable actuator for each of the pump plungers, slides in which said actuators are pivotally mounted, power operated means for successively operating said plunger actuators, and a manually op erablc controller for governing the operation of the plunger actuators.

6. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, an actuator for each of the pump plungers, said actuators being arranged in pairs, opposed slides in which the said actuators are pivotally mounted, and a common operating element interposed between the pair of actuators.

7. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders. comprising plunger pumps, an actuator for each of the pump plungers, said actuators being arranged in opposed pairs. a laterally adjustable slide in which each actuator is pivotally mounted, and a single cam interposed between each pair of actuators for alternately operating the actuators.

9. In an internalcombustion engine, pumping mechanism for feeding fuel oil to the engine cylinders comprising plunger pumps, a laterally adjustable actuator for each of the pump plungers, said actuators being arranged in pairs, a power drlven cam interposed between each pair of actuators, and an independent manually operable cam interposed between actuators.

9. In an internal combustion engine, pumping mechanism for feeding fuel 011 to the engine cylinders, comprismg plunger pumps, a pair of freely movable slides adjustable toward and from each other, a bell crank lever pivotally mounted on each slide for operating the pump plungers, means for adjusting the slides laterally, and cam means for alternately operating ,said bell crank levers.

10. In an internal combustion engine,

pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, a bell crank lever for operating each plunger, said bell crank levers being arranged in pairs, and a cam disposed between the arms of each pair of hell crank levers for alternately operating the latter.

11. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, a bell crank lever for operating each pump plunger, said bell crank levers being arranged in pairs, :1 power driven cam disposed between the arms of each pair of bell crank levers for alternately operating the levers, and a second manually operable cam also disposed between each pair of hell crank levers for operating the latter independently of the power driven cam.

12. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, a bell crank lever for each pump plunger, means for successively operating said bell crank levers, and means for adj ust ing the bell crank levers toward and from each other and said operating means to vary the stroke of the plungcrs.

13. In an internal combustion engine, pumping mechanism for feeding oil to the engine cylinders, comprising plunger pumps, a bell crank lever for each of the pump plungers, means for successively operating said bell crank levers, and manually operable means for adjusting the bell crank levers toward and from each other and toward and from their operating? means to vary the stroke of the plungers,

14. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, bell crank levers for operating said plungers, laterally adjustable slides in which said bell crank levers are pivotally mounted, an engine governor, a connection between said governor and bell crank levers for automatically shifting the position of the latter to vary the stroke of the plungers, and means for alternately operating said bell crank levers.

15. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, bell crank levers for operating said plungers, an engine governor, a connection between said governor andbell crank levers for automatically varying the position of the lever to vary the stroke of the plungers, and independent manually operable means for adjusting the position of the bell crank levers toward and from the operating means.

16. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, bell crank levers having operative connections with said plungers, said bell crank levers being arranged in pairs, means for alternately operating said levers, means for adjusting each pair of bell crank levers toward and from each other, a manually operable controller, and a connection between said controller and adjusting means.

17. In an internal combustion engine, pumping nn-ehanism for feeding fuel oil to the engine cylinders. comprising plunger pumps, bell crank levers, having operative connections respectively with 1lltl plunger-s, said bell crank levers being arranged in pairs, means for alternately oscillating the levers, means for adjusting each pair of hell crank levers toward and from each other. a ma ually operable controller. and a lost moti connection between said controller and adjusting means.

18. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, a bell crank lever for operating each plunger, a power driven cam for operating the bell crank levers. a worm spindle for adjust ing the bell crank levers toward and from the power driven cam. and means for operating said worm spindle.

19. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, a bell crank lever for operating each plunger, a power driven cam for operating the bell crank levers, a worm spindle for adjusting the bell crank levers toward and from the power driven cam, a controller. and a connection between the controller and the worm spindle for rotating the latter.

20. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cyllnders, comprising plunger pumps, a bell crank lever for operating each plunger, a power driven cam for operating the bell crank levers, a worm spindle for adjusting the bell crank levers toward and from the power driven cam, a controller, a connection between the controller and the worm spindle for rotating the latter, and means independent of said controller for rotating the worm spin le.

21. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, bell crank levers having operative connections respectively with said plungers said bell crank levers being arranged in pairs, 9. power driven cam arranged between each pair of bell crank levers for alternately operating the latter, a pair of worm spindles associated with each bell crank lever for adjusting the latter toward and from their operating cam, a controller, and a connection between said controller and one of said worm spindles.

22. In an internal combustion engine,

pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, bell crank levers having operative connections respectively with said plungers, said bell crank levers being arranged in pairs, a power driven cam arranged between each pair of bell crank levers for alternately operating the latter, a pair of worm spindles associated with each bell crank lever for adjusting the latter toward and from the operating cam, a controller, and a lost motion connection between said controller and one of said worm spindles.

In an internal combustion engine, pumping mechanism for feeding fuel-oil to an engine cylinder, embodying a pump cylinder and cooperating plunger having a yoke, an oscillating tumbler-block carried by said yoke, a laterally adjustable bellcrank lever for actuating the plunger, said lever having one arm in slidable engagement with the said tumblenblock, and means for engaging and actuating the other arm of the bell-crank lever to reciprocate the plunger.

24. In an internal combustion engine, pumping mechanism for feeding fuel-oil to an engine cylinder, embodying a pump cylinder and cooperating plunger, an oscillating tumbler-block carried by the plunger, a pivotally mounted bell-crank lever having one arm in sliding engagement with said tmnbler-block, an actuating member positioned to engage and actuate the other arm of the. bell-crank lever, and means for adjusting the position of the bell-crank lever relative to its plunger and actuating member to vary the length of stroke of the plunger.

25. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, comprising plunger pumps, bell crank levers having operative connections respectively with the pump plungers, a laterally adjustable slide in which each lever is mounted for oscillation, a worm-sector journaled in each slide, worms in mesh with said sectors, and means for rotating the worms to adjust the slides laterally.

26. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, embodying pump plungers, bell crank levers having operative connections respectively with said plungers, means for operating the bell-crank levers. laterally adjustable slides in which the bell crank levers are mounted for oscillation, op posed worm-sectors journaled in each slide, worm-shafts having worms thereon in mesh with the sectors, and means for rotating the said worm shafts to adjust the slides laterally and move the bell-crank levers toward and from their operating means.

27. In an internal combustion engine, pumping mechanism for feeding fuel oil to an engine cylinder, embodying a pump plunger, a bell-crank lever one armof which has an operative connection with said plunger, a rotar cam arranged to act upon the other arm 0 the bell-crank lever to impart oscillations thereto, 'a laterally adjustable slide in which the bell crank lever is journaled for oscillation, a worm-sector journaled in the slide, a worm-shaft in mesh with the sector, and means for rotating the worm-shaft in opposite directions to adjust the slide and its bell-crank lever toward and from the said cam.

28. In an internal combustion engine, pumping mechanism for feeding fuel oil to the engine cylinders, embodying pump plungers, bell crank levers each having one arm slidably engaging a pump-plunger, means cooperatively associated with the other arm of the bell-crank levers for imarting oscillations thereto, a laterally adjustable slide in-which each bell-crank lever is journaled for oscillation, a pair of opposed worm-sectors journaled in each slide, a pair of worm-shafts each having worms in mesh with the said sectors, and independent means for rotating the said shafts.

29. In an internal combustion en ine, pumping mechanism for feeding fuel 011 to the cylinders of the engine, comprising a pair of pump cylinders each having a cooperating plunger, a laterally adjustable oscillatin actuator for each plunger, each actuator aving arms arranged at substantially right angles to each other, and one of which arms has sliding engagement with its associated plunger, operating means for engaging the other arm of each actuator, and means for adjusting the actuators toward and from their operatin means to vary the length of stroke of the p ungers.

30. In an internal combustion engine, pumping mechanism for feeding fuel 011 to the engine cylinder, comprising a pump cylinder havin a cooperating plunger, a laterally adjust ile oscillating actuator for operating said plunger, said actuator having arms arranged at substantially right angles to each other, and one of which arms has a sliding connection with the plunger, operating means for engaging the other arm of the actuator, and means for adjusting the actuator toward and from its operatlng means to vary the length of stroke of the plunger.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

LEONARD B. HARRIS.

Witnesses:

FRANCIS K. PURCELL, J. P. JOHNSON.

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