US698285A - Explosive-engine. - Google Patents

Description

N0. 698,285. Patnted Apr. 22, |902.

M.YN. HYLLAND.v EXPLOSIVE ENGINE.

(Applicasim ined may '18, 1901. (un model.) 3 sheets-shane.

"In III Nu. 698,285. Patented Apr. 22,1902. M. N. HYLLAND.

EXPLDSIVE ENGINE.

(Application led May 18, 1901.) l (No Model.) 3 Sheets-Sheet 3,

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UNITEII STATES PATENT OFFICE.

MARTIN N. HYLLAND, OF FEDORA, SOTH DAKOTA.

EXPLOvSlVE-ENGINE.

SPECIFICATION forming'part of Letters Patent No. ees/ ,2s5, dated April 22, 1902.

l A pplioation'filad May 18, 1901.1

T all 1071.071 it muy ooncerw V j Be it known that I, MARTIN N.,HYLLAND, a citizen of the United States, residing at'Fedora, in the countyof Miner and State of South Dakota, have invented certain new and useful Improvements in Explosive-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention', such as will enable others skilled inthe art to which it appertains to make anduse the same. f

My inventionrelates to explosive-engines, and has for Aits objectl to improve the same with a View to obtaining a maximum eciency and of reducing to a minimum the size of the fly-Wheel required.

To the above ends my invention consists of the noveldevices and combinations of devices hereinafter described, and defined' in the claim. y

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Figure l is a plan view with some parts broken away, illustrating a multicylinder engine designed in accordance With my inven# tion. Fig. 2 is a longitudinal vertical section taken on the line a? 'x2'of Fig. 1. Fig. 3 is a transverse vertical section taken approximately on the line m4 004 of Fig. l. Fig. 4 is a section on line 4'w4, Fig. 1;' andmFig. 5 is a de-V tail in section onthe line x5 x5 of-Fig.- 3.

The numeral 1 indicates the'bed-casting, shown as having cylinder-seats 2; and bearing-pedestalst3,z4, vand 5. I Four cylinders 6, located in aXially-alined pairs, each pair constituting a so-call'ed tandem cylinder, are rigidly secured in the seats 2 of the base-casting 1. At their outer ends cylinders iare open and the aXially-alined cylinders are rigidly secured to abutments or dividing-heads 7, formed with the piston-rod bearings 8.

are provided, respectively, withV Water-jackvThe circulating connections for'said chambers 9, 10, and ll are not shown. Working Within each tandem cylinder, with one cylinder-head located on each side otthe abutment-7, isga tandem piston 12, the head of which is rigidly connected by a piston-rod 13, that Works through serial No. 60,804. on mqaeri theloearings 8. pen-ing into each explosion- 'chamber z'thus formed ywithin the cylinders adjacent to the abutments '7:is'aspring-seated int-ake-valvevjl'fl, suitably'mounted in the sleeve-like extension of thercorresponding `21, are connected 'through `branch pipes 23 with a common exhaust-pipe 24. The exhaust-valve stems 22 project toward the left with respect to Figs. 1 and 2 and work loosely through a guide-plate 25, fixed on the adjacent cylinders. Also Within the explosionchamber 2' of each cylinder is an insulated electrode 24, which cooperates with a movableelectrode 27 in the form of a metal finger carried by the corresponding piston-head, as best shown in Fig.y 2. As shown, the several'insulated electrodes 26 are connected by insulated metal stems 28" to "a lead-Wire 29. The otherlead-Wire maybe connected'toany suitable portion of the-"enginefasr for instance, to the vbed-platev 1, as indicated at 30 in Fig. 2. l I

'The crank-shaft 31 of the engine issuitably journaled in the bearing-pedestals 3 and et. This shaft is provided with a pair of cranks 32 and 33, the latter of Which,as shown, isinthei'orm of adisk and serves as asmall fly-Wheel. metrically opposite directions and are connected by crank-'rods 34;, one to each of ,the tandem pistons 12, as best shown in"Fig .`i2.

35 indicates a pinion on the crank-shaft 31, which meshes with a gear 36oftw'ice its diameter carried by a shaft 37,.loo'sely journaled in the pedestal 3 and provided with fourtappets 38, oiset laterally and projecting atl an angle of ninety degrees the one from the other. Each tappet 3S cooperates with one of a series of four bellcrank levers 39, pivoted on a The said cranks projectin dia-A IOO shaft 4:0, supported by the pedestals 5. A stop-rod 4l, supported by the pedestals 5, limits the downward movements of the horizontal arms of the bell-cranks 39. Each bellcrank 39 engages the outer end of one of the stems 22 of the exhaust-valves 23 and when acted upon by the corresponding tappet 38 forces open the said corresponding exhaustvalve. Itis evident since the tappets are set ninety degrees apart and as the shaft 37 is given two rotations to one of the crankshaft 3l that the exhaust-valves will be opened with a properly-timed action for a four-cycle engine. Fig. 4 shows one of the tappets as having just engaged with its coperating bellcrank 39, and this contact, as it will be noted, takes place while the crank-shaft is approximately on its dead-cen ter. f By giving the tappet the proper overlap with its bell-crank 39 the exhaust-valves actuated thereby may be held open any desired length of time.

To more clearly demonstrate the relative timed action of the engine,'the cylinders of the several engines are in Fig. l marked en` gine No. l, engine No. 2, engine No. 3, and engine No. 4. With reference to Figs. I and 2, it will be seen that the engine No. l, having compressed its charge, is on the point of exploding the same, while engine No. 4 is just commencing to exhaust. Engine No. 3 is just commencing to take in its charge, while en* gine No. 2 is just commencing to compress its charge. Bearing these relations in mind it is evident that when the crank-shaft 3l has made a one-half rotation from the position shown in the drawings engine No. 2 will have compressed its charge and the charge will be exploded. When the said shaft has completed its first rotation and is back in the position indicated in the drawings, engine No. 3 will have received, compressed, and exploded its charge. When the said shaft has made a one-and-one-half rotation, engine No. 4 will ceases have compressed and exploded its charge. It is further evident that when the said crankshaft has completed its second rotation engine No. l will again be ready to have its charge exploded.

Under the above action of the several engines the application of power to the crankshaft is almost continuous, and a maximum resultant efficiency of the several engines is thereby obtained. Furthermore, with the above arrangement a verysmall ily-wheel may be employed, and in many cases the ily-wheel may be dispensed with.

Vhat I claim, and desire to secure by Letters Patent of the United States, is as follows:

In an explosive-engine of the four-cycle type, the combination with two tandem cy1- inders having intermediate abutments, of a pair of cooperating tandem pistons the heads of which work in s aid cylinders on opposite sides of the cooperating abutments and the stems of which work through said abutments, intake-valves and exhaust-valves opening, respectively, into and from said cylinders, be tween said abutments and said piston-heads, a crank-shaft having cranks set one one hundred and eighty degrees in advance of the other and connected one vto each of said tandem pistons, and a one-to-two valve-gear for operating said four exhaust-valves in succession involving a series of four rotary tappets driven from said crank-shaft and set ninety degrees apart, whereby an explosion is 0btained for each half-rotation of the crankshaft and for each stroke of the pistons, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN N. I-I YLLAND.

Witnesses:

C. L. OLEsoN, WM. STIER, Jr.

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