US876236A - Inlet-valve mechanism for internal-combustion engines. - Google Patents

Description

No. 876,236. PATENTED JAN. 7. 1908.

H. REINSHAGEN.

INLET VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLIOATION FILED 00T.27.1905.

O 18 1% INVENTOR:

igr/ma /K.

, UNITED 's'rivrns PATENT oninon.

HUGO REINSHAGI'IN, OF COLOGNE, GERMANY, ASSIGNOR TO THE O'lTO GAS ENGINE WORKS, OF PHILADELPHIA, PENNSYILVANIA, A CORPORATION OI" PENNSYLVANIA.

Specification of Letters Patent.

Patented Jan, 7, 1908.

Application filed October 27.1905. Serial No. 284.627.

To all whom it may concern: Be it known that I, HUGO REINSIIAGEN, (if Cologne, Germany, have invented certain new and useful Improvements in Inlet-Valve Mechani'smforInternal-Combostion Engines, whereof the following is a specification, reference being had to the accompanying drawings.

My improvements are particularly ap- 10 plicable to engines which are governed by changing the fulcrum of a lever which either directly or indirectl operates the inlet valve, whereby the period of o ening or closingof the valve or both, ant consequently the quantity of each. charge admitted is automatical y predetermined.

It is the object of my invention to provide means to relieve the movable fulcrum of said lever froinpressure during the time when the valve is closed so that it can be moved by the governor, and, as hereinafter described, this is effected by a cam and connections which hold the lever on a stationary fulcrum during said time and thereby sustain thestress of a spring which normally tends to open the valve.

My invention comprises the various novel features of construction and arrangement hereinafter more definitely specified.

In the' drawings, Figure I, is a diagrammatic sectional WBW, showing valve mechanism embodying my invention, operatively connected with an inlet valve, thelatter being in closed osition. Fig. II, is a view 85 similar to Fig. but showin the inlet valve open. Figs. III, and IV, 810W a modified form of my invention wherein the movable fulcrum is afforded by an eccentric which is rotated by the action of the governor. Fig. 40 'III, shows the position of the eccentric when the engine is running idly or with a light load, and the valve is open only to a small extent, and Fig. IV, shows the eccentric in position for running the engine under full load.

Referring to Figs. I, and II; the engine casing 1, inclosing the combustion chamber 2, has the inlet 3, which is controlled by the valve 4, fitted to the seat 5. Said valve 4, is provided with the stem 6, connected by the spring yoke 7, with the stem '8. The spring 9, is arranged to press the valve 4, on its seat anilthe spring 10, tends to always" open said vs ve. Y

The mechanism which relieves the valve be rotated by the governor.

' from the. tension of said spring 10, while'the valve is closed, comprises the lever 12, which is then held on the fixed support 13, as shown in Fig. I. Said lever l2, is opcratively connected with the cam l5, by the rod 16, and bell crank lever 17, the latter being provided cam. It may be observed that the fulcrum 19, of said lever 17, is stationary.

The proportions of the parts above described are such that as long as the roller'lS, is in contact with the largest circuml'crei'ice of the cam 15; the valve 4, is held upon its seat 5, by said cam, under pressure of the spring J, and, said springs t), and ll), can only expand and permit the valve 4, to open when the roller 18, passes from the greater to the less radius of the cam 15.

Adjoining the fixed fulcrum 13, of the lever 12, is the movable fulcrum 20, which is conveniently an arm, arranged to be oscillated in the bearing 21, on the shaft 22, by the governor. It may be observed that during the time when the valve l, is closed, said movable fulcrum 20, is relieved from pressure of the lever 12, and the spring 10; so that it is possible for the governor to shift said support 20.

It is to be understood that at the beginning of the opening movement of the valve 4, the lever 12, changes from the fixed fulcrum 13, to the movable fulcrum 20, and the valve is consequently opened for such periods and to such an extent as is predetermined by the relative position of said movable fulcrum 20. Allthough the movable fulcrum 20, above described is arranged to be shifted in the direction of the length of the lever 12, it is to be understood that it may be otherwise constructed and arranged; for instance, as shown in Figs. Ill, and IV, the movable fulcrum is afforded by; the eccentric 25, on the shaft .26, the latter being arranged to It may be observed that in Fig. Ill, said eccentric. .25, is so rotated as to ali'ord a fulcrum for the ever 27, differing in location from that allordcd in the position of said eccentric shown in Fig. IV.

Fig. lll, shows the position of the eccentl'ic 25, c-orrespomling with the operation of the engine while running idly or under a light load, (when the valve 4, is open only a small extent,) and Fig. .lV, shows the position of with the rollcr l8, for engagement with said eration of the engine under full load, the

' maybe omitted, in-Whieh case; the arrange mentmay -b'e such that the movement of the eazn'lfi pri e-sure.

fleteils o f feonstiue ion and'arrengement "hrem'set forth, es

departing t movehleiulei'uinis relieved for actuation by 1th governor when the valve 1s closed, subthe eccentric 25, corresponding Withthe opvalve being'then open to its full extent.

.Itma y beobs'ervedithat the spring 9, is not an essentielelement'of the mechanism and "merely resents the valve 4, upon its seet fey-where itle forced bythe internalfluid I d notXlesire to limit myself to the pre' @umtrmsmd lever; sofltma tedthat said Ytentisilly as set forth.-

-2. I In unjmternal combustion engine, the

combination with a valve; of a spring tendv I mg to open saul valve; a lever provided with I means to close sand valve; a, movable fulcrum-for said lever, comprising an eccentric in operative connection with the engine 'overnor; end, an auxiliary fulcrum for sai lever; whereby said 'nievable fulcrumis'relieved for actuation by the ove rntn when the valve is close(l,'substanti fly as set forth. .3 In an internal eomb'ustio'n engine, the combination with an inlet valve provided with a stem of a spring yoke connected with seicl' stein; spring between said yoke-and stein permitting reltt'tive xnovement thereof; 1

a spring inoperative relationiwvitli said yoke,

tending to opensaid valve; aleverpivotegl .at one end to Sfl-ltl yoke and opel'etively convnested at its otl1er'en '.l with. eani;,..a,i Sta? tionery fulcrum for said 'leVeLinteBnied' e of its ends; and, al'novable fulcrurnfoi ,said

lever intermediate of its ends; jinopereiti-ve 3 .1 by said movable fulcrum is relieved tomct a connection with the engine gevernor; zfwhere tionby the governor whenthe velv' S -closed substantially aseet forth.

In testimony wherofllhhav hereunto signed my name at cologne, G 13th (lay of October, 1905i v HUGQ REI' "itnesses v lhassnc F. Duxmr, Louis VANDURN;

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