US1506559A - Spark plug - Google Patents

Description

Patented ug.. 26, 1924.

UNITED STATES PATENT ottici-3.

Am BO'UBCHEIX, 0F BROOKLYN, NEW YORK, ASSIGNOR 0F ONE-HALF TO SIDNEY E. HANN, OF SHEEPSHEAD BAY, vNEW YORK.

SPARK PLUG.

Application filed September 30, 1921. Serial No. 504,385.

To all whom t may concern.'

Be it known that l, AIM BOURGHEIX, a citizen of France, and resident of Manhattan Beach, borough of Brooklyn, county of Kings, and State of New York, have i nvented a new and improved Spark Plug, of which the following is a full, clear, and exact description.

My invention relates to a spark plug and aims to provide new and useful improvements in connection with a device of this character.

In connection with intern'al combustion engines it is a well 'appreciated fact that it is quite customary, that due to wear and other causes, a certain amount of lubricant within the crank case enters into the combustion chambers. incident to this action, as well as to an improper fuel mixture, the 2o spark plugs within the combustion chambers readily become fouled or sooted, so that they refuse to produce an effective spark, and it is thus necessary to frequently remove the plugs and cleanse the same, and even this an in many instances, due to the excessive carbonization within the combustion chamber, fails to produce satisfactory results.

With this in mind my present invention aims to provide a spark plug of extremely 3o simple construction which shall be so constructed as to virtually preclude any danger of a fouling or sooting of these parts regardless of the improper mixture or amount of lubricant within the combustion chamber.

A further object of this invention is the construction of a device of the nature stated which shall embody the above functions without however in the slightest interfering with the normal efficient expansion within t0 the combustion chamber.

Still further objects of this invention will appearin the annexed specification taken in connection with the drawings which latter illustrate practical embodiments of the same,

and in which;

Figure 1 is a side elevation of a plug embodying my improved construction and showing the same in position.

Figure 2 is a sectional side view thereof taken along the line 2-2 thereof and in the direction of the arrow indicated in Figure 1.

Figure 3 is a bottom` plan View of the device as illustrated in Figure l, and

Figure 4 is a sectional end View taken along the line 4 4 and in the direction of the arrowindicated in Figure 2.

Also as in conventional construction, my improved plug includes a jacket 7, and a clamping nut 8, the latter serving to retain the insulating core 9 in applied position with respect to the jacket, and a central electrode 10 is carried yby the insulating core 9 and extends beyond the same within the jacket.

However, contrary to the conventional construction, it will be noted that the jacket 7 is provided with a collar 7 and it is from this portion of the block that the second electrode 11 preferably extends. Also for l a purpose hereinafter specifiedv it will be noted that a plurality of rods 12 have one of their ends secured to the collar 7', their opposite vor outermost ends mounting a plate 13 constituting a baffle, which plate may be aflixed to the rods 12 by any suitable means such as nuts 14.

It\will further bel seen that the diameter of the plate 13 as in Figure is slightly less than the diameter of theA opening 6, so that the edge of the plate 13 is spaced at all points from the inner face of the opening 6.

Thus it will be found in operation that while the fuel mixture is free to reach the firing parts of the plug to produce an efficient explosion, that particles of oil and improperly atomized fuel will be deflected by the plate 13 in such a manner that vir tually none of the same will enter the space existing between this plate and the central electrode. ln some isolated instances where a few of these particles would pass this space however, the same would rebound from the inner face of the opening 6 and be deflected by the collar 7 lt will also be noted that incident to the funnel shaped construction 15 of the lower end of the insulating core 9, that this element will, in addition to serving as a deiiector for particles of oil and fuel cooperate with the plate 13 in the following manner; assuming that the spark was relatively weak and that the plug is fired at the end of the compression stroke, the spark of the usual plug would be deected or blown upwardly to a position extremely accessible to the fuel mixture. However, due to the peculiar construction of my plug, the plate. 13 will initially serve to break the force of currents produced, incident to this compressive action and also the funnelshaped construction -15 will act as a trap to prevent the deflection of the spark'up- Wardly.

Thus all of the objects set forth in the preamble of this specification have been accomplished and it will further be understood that numerous modifications o structure might readily be resorted to Without in the least departing from the spirit of my invention, which l claim as;

ln combination with a motor block having Lacasse a spark plug opening, a spark plug adapted to be positioned within said opening, said spark plug comprising a shell and having electrodes of a length which when the spark plug is positioned 1n the spark plug opening of the motor block, will occupy ay position within the confines of said spark plug opening, a pair of diametrically opposed legs dependent from the spark plug shell, a plate provided with diametrically opposed openings adapted to receive said legs, and a plurality of nuts carried by each of said legs and adapted to grip the plate therebetween, said nuts being adjustable on the legs whereby the plate may be adjusted i with respect to the electrodes of the spark plu g MM BOURCHEIX

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