US1175820A

US1175820A - Explosive-engine.

Info

Publication number: US1175820A
Application number: US61414611A
Authority: US
Inventors: Erdix Rounds
Original assignee: GUNTHER WRIGHT MACHINE Co
Current assignee: GUNTHER-WRIGHT MACHINE Co; GUNTHER WRIGHT MACHINE Co
Priority date: 1911-03-13
Filing date: 1911-03-13
Publication date: 1916-03-14
Anticipated expiration: 1933-03-14

Description

E. ROUNDS.

EXPLOSIVE ENGINE.

APPLICATION FILED MAR. 13. 1911.

Patentd Mar. 14,1916.

1 6SHEETSSHEETI.

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if 1/ 1/ O O 2 .51 H if 4 I I m [J v i lay I H 1 w I I '1 E. ROUNDS.

EXPLOSIVE ENGINE.

APPLICATION FILED MAR.13. 1911.

1,175,820. Patented Mar. 14,1916.

6 SHEE SHEET 2.

E. ROUNDS.

EXPLOSIVE ENGINE.

APPLICATION FILED MAR. 13, um.

Patented Mar. 14, 1916.

6SHEETSSHEET 3- 8v: veulfoz E. ROUNDS.

EXPLOSIVE ENGINE.

APPLICATION man MAR. 13. I911.

1,175,820. Pat ented M31214, 1916.

6 SHEETS-SHEET 4.

anucufoa E. ROUNDS.

EXPLOSIVE ENGINE. APPLICATION FILED MAR. I3, 19]].

Patented Mar. 14, 1916.

6 SHEETS-SHEET 5.

fl y z 4 lg 0 .M g a w I J mlum E. ROUNDS.

EXPLOSIVE ENGINE.

APPLICATION min MAR.13, 1911.

1, 175,820. Patented Mar. 14, 1916 6 SHEETS-SHEET 6.

era-a2 UNITED STATES PATENT OFFICE.

ERDIX. ROUNDS, 0F O'W'ENSBORO. KENTUCKY. ASSIG-NOR OI ONE-HALF TO GUNTHER WRIGHT MACHINE COMFANY. OF OVJENSBDRO. KENTUCKY. A CORPORATION.

EXPLGSIV E-ENGINE.

Application filed March 13.

Specification of Letters Patent.

Iatm110(l.\l:u'.14. 1916.

1911 Serial N0. 614.146.

Fig. I :1 section on line 1 i Fig. l. Fig. ii is :1 SLTllUli (ill linv 1. 2-. Fig". 2"]. (if lh v n ipvi' portion of the un rinv. Fig. T is :i awry inn mi liiw N. Fig. ('1. Fig. Q is 2\ Slllii'li] mi. linv 1/. 3 Fig. 4. lln'nngh llH Hlnlilitl' l1l((,ll-- ill1l-ill. F J is :1 lmtlmn plan View illkl'P- l Fla. i i:-: ;i wviinn on linv (I. (.1. Fi i. 1').

6 represents a crank shaft, suitahZy journaled in bearings formed in the

base plate

1, and 7 represents the fly-Wheel.

9 represents the connecting rod and 10 the piston connected to the crank in the usual manner.

11 represents the cylinder head suitably bolted to the cylinder, said head being provided with ports and passages for the fuel inlet and exhaust, and which passages are suitably water-jacketed, as illustrated in Figs. 4 and 6.

12 represents a conduit, for conducting the fuel from either the mixer 13 or carbureter 14, to the inlet passages 15 of theseries.

I have not illustrated the gas mixer or carbureter in detail. The fuel for the carbureter is pumped to a chamber Within the carbureter and a constant level maintained. Atomizing and vaporizing is produced, preferably, by a hot-air blast drawn around a vaporizing nozzle, and the air is heated by passing through a chamber or conduit 0 formed around the exhaust conduit, see Fig. 13.

16 represents the inlet or in-take valve, and 17 the stem therefor, projected upwardly, passing through a bearing formed in the cylinder head 11.

18 represents a spring through which the stem projects, one end engaging the cylinder-head l1, and the opposite end, a nut threaded upon the stem 17, for adjusting the tension of the spring. This spring has a tension suflicient to hold the valve 16 on its seat, but not against vacuum pressure Within the cylinder.

19 represents a lever for operating the valve pivotally mounted upon the support 20, secured or projected from the cylinder head 11. Upon one end of said lever, a collar 21 is pivotally mounted. see Fig. 5, through which the valve stem slidably passes, to permit certain limits of valve movement, independent from the main valve controllin mechanism. The rock lever 19 is prefera ly provided with the pintles 22, projected through the collar 21 and free therewith, providing a pivotal connection and projecting to the annular groove 23, formed on the valve stem 17.

24 represents a nut, adjustable on the end of the stem, and 25 represents the leather washer interposed between the nut and collar 21,.serving as a cushion on the cut-offstroke of the valve.

30 represents a spring interposed between the collar 21 ,and the cylinder-head, and of a strength sufficient to seat the valve and yielding under excessive degrees of vacuum on the piston power stroke and holding the collar firmly against the washer 25, and nut 24, when the lever is released by its operating cam. j

26 represents a cam shaft ournaled w1thin bearings formed in the reservoir bracket 27, secured to the cylinder or cross-plate 3. Said shaft is rotated through the train of gearing, illustrated in Fig. 1, in which, 28 represents a gear fixed to the crank shaft, and 29 represents an intermediate gear journaled upon a stud shaft supported upon the base frame of the engine. The gear 29 is in mesh with the gear 28, and a gear 31 fixed to the cam shaft 26.

32 represents a cam fixed upon the cam shaft 26, and 33 represents a connecting rod, having bifurcated or yoke ends, one end pivotally connected to the rock lever 19, the opposite end provided with a roller 34, adapted to travel upon the cam 32, thereby imparting action to the connecting rod 33, rock lever 19, and inlet valve.

The time of inlet valve operation can be changed or varied relative to the stroke of the piston controlling the admission of fuel within the cylinder, consequently changing the compression, thereby serving as a throttle for governing the speed and power of the engine. lVith the mechanism provided, it is possible to change the time of valve opening While the engine is running. The mechanism employed comprises the following 35 represents a rock shaft journaled in bearings formed in the reservoir brackets 27. 36 represents a lever connected to said rock shaft and projected parallel with the quadrant 37. The quadrant is provided with a series of orifices to definitely engage and lock the lever 36 to adjust the roller 34 and the connecting rod 33, and relative to the cam. 38 represents a rock arm, fixed to the rock shaft 35, and 3.) represents a connecting link pivotally connected to the rock or crank arm 38 and the onnecting rod Thus, when the lever occupies the position shown in Fig. 4. tne valve when the roller 34 engages the cam, will remain open fora half stroke of the piston, as the engagement between roller and cam are such that they do not engage or travel over the entire surface or area of the cam, but only a. limited portion thereof. Moving the lever to its extreme right, will swing the roller and connecting rod completely out of the path of the cam, and in which position the valve will not open at all, and adjusting the lever 36 to the left from its intermediate position, will control the valve to remain open for a full stroke of the piston or lesser degree. \Vhenever the cam engages the roller to actuate the rod 33, and rock lever 19, it will power stroke by suction, and is only seated in the suction stroke by the spring 30.

40 represents an exhaust valve provided with a valve stem 41, projected through abearing formed in the cylinder head 1], for controlling the exhaust through the passage 42.

43 represents a conduit connecting with the exhaust passage 42, and within a second conduit 41, providing an intermediate pas' sage, leading to the chamber -15, in the cylinder-head, forming a water jacket space around the inlet and exhaust conduits.

As shown in Figs. 12 and 13. the exhaust conduit 43 is \vatcejat-keted its entire length, and with the second conduit l l constructed to provide tower and u per pas- Sages Z and If respentively. The: are Substantially s parate. tinni to direct the iiow ot ater ihronsh a #periiiu course to advantv, .aslg: rool tin: \HQEIH'. Communication however, be established between the passages l), 0 by providing perforations "f" in the wall sepaiatingj said passages, as illustrated in Fig. l The lower passage l) is provided with an inlet I) at one end, with the over-lion pipe 0 at the opposite end. leading from the passage 5 into the eXhau t pa sage of the haust conduit 13. it represents pass formed in the cylinder and rylinder hi uh. providing connection; *i'lWt li the g linder jacket space and cylind r head The LUUi ing water is pumped to the ngine, through inlet Z1 passage L, entering the ovlindm' heads at. the exhaust valves. filling the evlinder space with the oveirllow ill the highest point, freeing the engine of all air and preventing air pockets. This also advantageous in starting the engine after it has been drained in delivering water at once where the heat is, protecting the exhaust conduit and cylinder heads from beeoniing heated, and preventing the various parts from rracking. as is the ease where cold water enters initially at the base of the cylinder.

The exhaust valve is controlled sin'iilarly to the inlet valve by cam and lever mecha nism. 46 represents a rock lever pivotaiiy mounted upon the support or strut -17, secured to the eylinder head 11. -1 is represents a eollar pivotally C(mDr-"tltl to the yohe end of the lever 46, and through whit-h th valve stem passes and is secured thereto. preferably, by the upper and lower nut: he 50, and interposed leather or libei washers 51. and 52. Thus. in the valve opening: movement of the rock lever, it will cause the collar to hear on the washer thereby cushioning the connection amvern rollinand valve stem, and with a like result in the seating of'the valve. 5 represents a con' necting rod, pivotally connected to the rock lever 46, at one end, with its opposite end provided with a roller 54, adapted to engage a double faced cam 55. in whieh the cam 56 thereof, may be termed the exhaust cam. and the ram 57, the r lief eain, the hitter being used in staiting only, holding: the eX-- haust valve op n after a rhar ie has hecn taken into the cylinder, relieving the t',(tlll pression a portion of the piston stroke. The relief cam will n t, however. change the time of the exhaust valve. The roller and connecting rod are ada'ited to be adjusted, so that they will not engage the relief cain when the engine is running at tull power.

55 represrnts a reel; shaft j ur'ialed in bearings formed in the reservoir brackets 1'57. 59 represents a crank arni fixed to the shaft 5 and. (al represents a link piv t-ill) conia zhthe ink arm 52), and eonnecting r l 7.. iii r sents a lever fixed to the nit an. at pro eirted parallei with a o2, srrnred t the hrauket 2T. see The lever (i1 is provided with a handle spring-emitrolled delent 52; adapted to engage with orilices formed in the quadrant to lock the lever in its adjusted posh Li n. Thus, by shifting the lever til, the roller and connecting); rod ran be moved within or out of the path of the relirt rain 57. with the lever in the p sition, shown in Fig. l. tiir part are in position to he engage-ii by the relii-t' rain 57, and when the low-r is shifted to the right. the roller will mi- 1 raid main.

exhaust valws: arr 'iincd to give the ta -4t revulh at. a given speed and by the \ariable rontrol the lever (31 can be placed to give the pi per tuning to suit the speed whih: the. engine is in motion, enabling the operator to ohserve the best position.

The varialde rut-oil's ot the intake valve permit th piston to start down without any res stance. the valve el sing utter the. pist n has nioineninni and rreating a sin: ion resistanrc at the end of the piston travel. relievin the rrank of this resistance f elierle ing the nioi'nentuin til the. reriproeating parts. in ruse the. intake valve s ats at the. lltlll fiti lit. ot the pist n, increased expansion is had from sivtv down to ten pounds, where a lined valve would exhaust. at sixty -unds l( :-l1l{ this expansion. lndirator tests have shown the mean etl'ertive pressure With my variable valve :nl alt the adjustments nan be made a 1h entz ine is runnin enabiie an mas-t iiett-rniinatien for Producing the herd. For example take an arroplane at level; it the engine has proper compres sion when it reacl'ies a higher point. the W lli pression is only one-hall. \lit h my impr ve ment, the engineer can keep the eouipression right, securing a rated power at all altitudes. The same can also be said in making a change from one fuel to another for maintaining the proper compression.

As illustrated, when two or more engines are connected in units, the cam shaft 20 and rock shafts and 58 are extended, to engage with and control the valve mechanism simultaneously, of each engine throughout the series. instance, being duplicates of those hereinbefore described, with one lever controlling all inlet valves, and a second, all the exhaust valves. The cylinder heads are likewise duplicates of each other and with the inlet and exhaust conduits leading thereto, forming main supply and exhaust passages, for the entire series. In providing the b .ickct 27 of reservoir form, providing an oil receptacle, all the cams and pa rt 15 are thoroughly lubricated necessary to a free running of an engine.

To aid in explaining the operation and control of the inlet and exhaust valves. let it be assumed that the piston of one of the engines is moving downwardly on the suction stroke, during'which relative interval the cam 32 is in a position to engage with the rod 33 and depress the spring 30 to re lieve the valve of the spring pressure. The spring 18 is a weak spring, suliicient to hold the valve to its seat under atmospheric pressures on both sides of the valve. Thus the diminishing or suction pressure within the cylinder will readily unseat the valve when it is relieved from the pressure of spring 30. Now assume in starting the engine that the inlet valve is closed and the cam in a position opposite from its rod engaging po sition and the piston moves downwardly on the power stroke of the engine. Under such condition it is desirable to relieve the parts of the vacuum or diminishing atmospheric pressure within the cylinder. This is automatically accomplished when such internal pressure becomes slightly greater than the pressure of the spring 30, whereby the spring will be compressed opening the valve, causing instant relief, reducing the internal negative atmospheric pressure or vacuum. By adjusting the rod and definitely locating the same relative to the cam. the inlet can be closed at any point of the suction stroke of the piston or adjusted so that the cam will not operate the rod 33, in which instance the vacuum within the" cylinder on such stroke willautomatically open the valve, when its pressure exceeds that of the spring 30.

The exhaust valve is positively actuated by the exhaust cam to open the same and closed by the spring, with the rod 53 adjustable to various positions relative to the cam. j[5 relative time of operation can be varied, as for instance at low speed the exhaust valve is opened late and at high speed is open early, with the condition at all times The valve mechanism, in each within the control of the operator while the engine is in motion. \Vith the relieving cam on the same axis with the exhaust cam it will operate the connecting rod when the rod is stationed to engage said cam in which instance the cam will operate to op :1 the exhaust valve on the compression strol. of the piston. This is of advantage in starting to relieve the engine of such resistance.

The sparking mechanism and its control comprise the following instrumentalities: 65 represents a plug, for supporting the spark-electrodes leading into the cylinder and projecting through the cylinder head, having a ground joint 66, bearing upon the seat formed in the cylinder head, providing a tight connection between the two members. 67 represents a stationary electrode projected through a bore of larger diameter formed in the plug (35. 68, 69 represent mica washers for insulating the electrode (37, from the plug, with the electrode secured in position by the nuts 70. The inner end of the electrode is provided with a contact pin Tl. The movable electrode comprises a rod 72, journaled in elongated bearings formed in the plug 65, and with the intermediate portion thereof of smaller diameter than the bore in the plug, providing clearance, which prevents sticking and affords easy removal. The rod at its lower end has a conical shoulder 73. fitting into a ground seat in the plug, thereby excluding the heat from the annular space surrounding the rod or the escape of products of combustion. 74 represents an arm projected from the rod, provided with a contact pin, adapted to engage the contact pin 71, of the stationary electrode. when the rod 72 is rocked. 75 represents an anvil arm sleeved upon the rod 72, and held securely thereon by the set-nut, which allows the arm to be adjusted to take up for wear between the electrode connections with the plug.

The movable electrode is actuated by the following mechanism :*76 represents a bevel gear, see Fig. 2, fixed to the cam shaft 26, in mesh with a bevel gear 77, fixed to the shaft 78. The shaft 78 is journaled in bearing brackets 79 and 80, mounted on the bracket 27 and fuel conduit 12, respectively. 81 represents a spiral gear, fixed on the shaft 78, in mesh with a spiral gear 82, splined on the cam shaft 83, see Figs. 3 and 10. The cam shaft 83 is extended to convey motion and operate the electro-tripper mechanism of each engine in a series having a cam mounted thereon for each of the tripper mechanisms with each cam arranged'relav to engage and actuate the, trip rod 8?, i

vary its periodicity of cam cooperation or position said actuator to neutrality.

An internal combustion engine of four cycle type of the nature disclosed combining 5 an inlet valve and seat therefor, a spring for seating said Valve under atmospheric pressure on both sides thereof, a second spring expanding to close said valve, contracted to relieve the valve from its pres- 0 sure on the first or suction Stroke of the engine piston and releasable and capable of resisting normal diminishing pressure Within the cylinder at any point during said first piston stroke, a rotary cam member,

a reciprocating member for contracting said second spring actuated by said cam member during the suction stroke of the piston and an adjusting device operatively connected with said reciprocating member for determining the actuating period of said reciprocating member.

In testimony whereof, I have hereunto set my hand. i

, ERDIX ROUNDS.

\Vitnesses J NO. S. WRIGHT, E. W. PEGNAM.