US1001352A - Valve mechanism. - Google Patents

Description

L. S. GHADWICK.

VALVE MEGHANISM.

APrLxuATIoN FILED Mmm. 1907.

Patented Aug. 22, 1911.

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VALVE MBGHANISM.

APPLICATION FILED MMM, 1907.

Patented Aug. 22, 1911.

L.' S. CHADWICK. VALVE MEGHANISM. APPLICATIQN rlLBD'HAR. 9. 1907.

Patented Aug. 22, 1911.

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L. S. GHADWICK.

VALVE MBGHANISM.

APPLICATION FILED MAR. o, 1907.

Patented Aug. 22, 1911.

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LEE S. CHADWICK, 0F PHILADELPHIA, PENNSYLVANIA.

VALVE MEGHANISM.

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To all whom it may concern:

Be it known that l, lam S. Cimnwrck, a citizen oit the United States, residingin Philadelphia, Pennsylvania, have invented certain Improvements in Valve l lcchanisni7 of which the 'hillmving is a sjjiccitieaftion.

My invention relates to earburcters :tor 'internal con'll'aistion engines, and the Yobject o't my invention is to regulate the amount ot gasolene discharged into the mixingr chamber when the throttle valve is open; the throttle valve and gasolene valve mechanism being combined in such manner that the discharge oit gasolene is in direct proportion to Vthe extent of opening,` et said throttle valve.

My invention is fully shown in the aecompanying drawings, in which:

Figure l, is a plan view o't sullicient ot' the mechanism of an internal combustion envgine, shown in this instance as carried by an automobile, to illustrate my invention; Fie'. 2, is a side elevation ct the same; Fifgj. il, is a plan view showing.;l the adjusting and rep;- ulating mechanism forming` the subject o't my invention, in the position when the ensolene and throttle valves are open; Fin'. ft, is a sectional view of the `rasolene tank showing the valve controlling the delivery ot gasolene and the throttle valve, taken on the line n-m Fire'. f3; Fig. 5, is a plan view similar to Fig. S, showing the position oi the parts ot the adj listing; and rele'ulatincY mechanism when the valves are closed; Fie'. G, is a sectional view similar to Fig. 4t, with the valves closed; Fig. 7, is a plan view similar to Figs. 3 and 5, illustrating a modified form of the controlling' devices, and Fig. 8, is a view somewhat similar to the upper part of Figs. t and G, showing in elevation the parts ot the adjusting and regulating 1nechanism illustrated in Fig'. 7.

As is well known, it is the common practice to combine the mechanism iter operating the valve controlling' the disclmrge of gasolene with the mechanism for operating the throttle valve, so that as said throttle valve is opened the gasolene valve will also open and grasolene will be admitted to the mixing chamber in direct proportion to lthe open ing ot said throttle valve. and this arraneement is such that when the throttle valve is closed, the `gnsolene valve will be partly or fully closed, and when the throttle valve is fully opened the gasolene valve will be in the same position. It often happens,

Specification of Letters Patent.

Application led March 9, 1907.

Patented Aug. 22, 1911.

Serial No. 361,430.

however, that the character ot the `e'aselene or the type ot engine with which such carburetcr is to be combined is not the same in every instance and it becomes desirable to be able to change the relation oli the openini;l of the 4nasolenc valve o't such earhuretcr relatively to the opening ot the throttle valve oil the engine, and the ready aecomplislunent of such action the purpose of my invention.

ln the drawings herewith, l represents a throttle Yalve having: a stem 2, and B the gasolcne valve having,Y a stem fi, which latter passes through the stem ot' thc throttle valve. 'lhe lower end ot' the stein carrying' the gasolene `valve is threaded, the pitch of said threads beiney such that the limited 1novement oil the stem will serve to open the valve sufficiently. The stem oil" said throttle valve has an arm 5 to which a, link 6 is attached; said link being' connected at its outer cud to a hell-crank 7, pivoted at S and having;- operating` means such as the foot treadle t). or it may be connected to any other form oi. lever 'l'or actuation in any suitable manner.

'.lhc stem fl, ci the gasolene valve is pro vided with an arm 10, apertured for a purpose to be hereinafter described, and this arm is connected by means of a threaded rod l1 with a link 12; thc latter being connected with a threaded rod lf3 carried by thc arm 5, by means oit a link 111-, which in some instances may be curved as shown. The link l2 is connected at its outer end 1 5 with an arm lt. to which a vertical spin die 17 is connected, and having a controlling lever 18 for operating the same. such lever carryinf,r means whereby it may be locked to a segmental plate 19 when once adjusted. rlhis adjustment is usually made when testirngr out the engine prcpart'ory to sale or other disposition and is rarely changed except tor climatic conditions. A further adjustment, however. may he necessary with different l(grades ot gasolene. and it will be umilerstood. ot' course` that the adjustment ol the valve controlling' or regulating` mechanism will dill'cr in all. engines.

ln the adjustment ot the mechanism 'forming' the subject ot my invention, the character oi" the `rasolene and the required amount to be employed in the operation of the engine under consideration is tested, and the position of the link 1Q is adjusted A by means of the threaded rod l1 with reit'- erence to its connection with the bar 10; the latter being apertured at 21 to permit engagement of the end of the rod 11 therewith whereby the proper relation between the opening of the gasolene valve and the throttle valve may be established. The bar 10 has been previously adjusted in r-elation to the valve stem 4 to directly regulate the opening of the gasolene valve, and then held by a bolt 22 passing through the split end 28 of the same. vWhen this has been determined, the controlling lever 18 is fixed and the mechanism is ready for operation. The operator is thus assured that the gasolene valve will open sutliciently to discharge the proper amount of gasolene for any degree of opening of the throttle valve. Upon actuating the foot-lever 9, or other lever or means properly connected to the link 6, the throttle valve will be directly opened through the medium of the arm 5 to which said link is pivotally connected. At the same time the gasolene valve will be Opened, and such opening of the latter valve is accomplished in the following manner: As the arm 5 connected to the stem 2 of the throttle valve is being moved by the link 6 to open said valve, it serves to move the link 12 through the medium of the rod 1,8 and link 14; such movement of the link k12 being in a slightly lateral direction, or, more properly speaking, in the arc of a circle struck from the center of the pivotal connection of said link 12 with the arm 16. This movement of the link 12 causes it to actuate the bar 10, connected to the stem 4 of the gasolene valve, through the medium of the link 11, and thereby open said gasolene valve simultaneously with the opening of the throttle valve.

In addition to the lateral or oscillatory movement of the link 12 from its pivotal connection with the arm 16, it may be moved longitudinally for the purpose of adjusting the extent to which the gasolene valve will open with respect to the extent of opening of the throttle valve, by operating the lever 18. rIhis adjustment when once made, however, rarely requires change, and the movement of the link 12 in making such adjustment has nothing whatever to do with the subsequent movement of said link through the means described for the purpose of operating the gasolene valve with respect to the throttle valve during the running of the engine. By reason of this corelation of the valves, the opening of the gasolene valve is always in the desired proportion with respect to the opening of the throttle valve. The throttle valve also may be provided with a shutter valve 24, to regulate the supply of air admitted to the mixing chamber.

In Figs. 7 and 8, I have shown a simplited form of the adjusting mechanism forming the subject of my invention, in which I employ a threaded stem 10;1 (in lieu of the bar 10,) and movable upon which is a threaded sleeve 25, to which an arm 11a, (taking the place of the rod 11,) is pivotally connected. Although this construction involves the same idea as that shown in Figs. 3, 4, 5 and 6, it will be observed that the particular construction enables me to eect a much easier and liner adjustment of the extent of opening of the valves. In this construction too, it will be noted that the arm 13a, (corresponding to the arm 13, as shown in Figs 3, 4, 5 and 6,) has a iixed pivotal connection for t-he arm 14a, (corresponding to the arm 14 of the other structures). The arm 14a is pivotally connected to the link 12, and the pin forming such connection carries a threaded sleeve 26 in which the rod 11a is adjustable; the end of the latter' being bent for engagement with t-he sleeve 25.

In the preparatory setting of this device, it is only necessary to operate the threaded sleeve 25, the necessary adjustment of the rod 11a with respect thereto being accomplished by movement of the sleeve 26 on said rod, which carries the pivot pin for the rod 14a and link 12. In all other respects the operation of this mechanism and the result accomplished is precisely similar t-o that of the structure shown in Figs. 1 to 6, inclusive.

I claim: A

1. In val've mechanism for internal combustion engines, the combination of a throttle valve, a gasolene valve, means for coupling said valves whereby the movement of one directly controls the movement of the other, and mechanism for setting or regulating the extent of opening of said valves relatively to each other, said mechanism comprising an arm connected to one of said valves, connected links extending from said arm, a second arm to which one of said links is attached, a shaft carrying said latter arm, a handle for moving said shaft, and means for locking said handle.

2. In valve mechanism for internal combustion engines, the combination of a throttle valve, a vgasolene valve, means for coupling said valves whereby the movement of one directly controls the movement of the other, and mechanism for setting or regulating the extentof opening of the gasolene valve relatively to the throttle valve, said mechanism comprising an arm connected to one of said valves, connected links extending from said arm, a second arm to which one of said links is attached, a shaft carrying said latter arm, a handle for moving said shaft, and means for locking said handle.

3. In valve mechanism for internal combustion engines, the combination of a ISU throttle valve, a gasolene valve, each rotatably movable to the open or closed positions on the same axis, adjustable means for coupling said valves whereby the movement of one will effect movement of the other, and means operable independently of the adjustable coupling means for setting or regulating the extent of opening of the gasolene valve relatively to the throttle valve. 'i

4L. In valve mechanism for internal combustion engines, the combination of a throttle valve, a gasolene valve, each rotatably movable to the open or closed position on the same axis, adjustable means for coupling said valves whereby the movement of one will effect movement of the other, and means operable independently of the adjustable coupling means for setting or regulating the extent of opening of the gasolene valve relatively to the throttle valve.

5. In valve mechanism for internal combustion engines, the combination of a throttle valve, a gasolene valve, each Inovable to the open or closed position on the same axis, adjustable means for coupling said valves whereby the movement of one valve controls the operation of the other, and means for setting or regulating the extent of opening of the gasolene valve relatively to the throttle valve, including a lever, and locking mechanism for said lever.

6. In valve mechanism for internal combustion engines, the combination of a throttle valve, a gasolene valve, stems for said valves rotatably movable on the same axis, arms carried by said stems, an adjustable connection for said arms whereby the movement of one valve will effect the operation of the other, and means connected to sald adjustable connection and ope 'able independently thereof for setting or regulating the extent of opening of the gasolene valve relatively to the throttle valve.

7. In valve mechanism for internal combustion engines, the combination of a throttle valve, a gasolene valve, each movable to the open or closed position on the same axis, means for coupling said valves whereby the movement of one valve directly controls the movement of the other, mechanisni for setting the extent of opening of the gasolene valve relatively to the extent of opening of the throttle valve, said meehanism comprising an arm connected to one of said valves, connected links extending from said arm, a second arm to which one of said links is attached, a shaft carrying said latter arm, a handle for moving said shaft, and means for locking said handle.

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

LEE S. CIIADIVICK.

Witnesses:

MURRAY C. BOYER, J os. I'I. KLEIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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