US978969A - Internal-combustion engine. - Google Patents

Description

A. H. WEBBER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED AUG. 6, 1909.

978,969, Patented Dec. 20, 1910.

-Massachusetts,

invention.

'DsTATEs PA FEW.

iiv'rnnnnn-coivinusrron ENGINE.

To all whom it may concern: Be it known that I, ARTHUR H. WEBBER, a citizen of the United States, residing at Boston,'in the county of Suifolk and State-of have inventednew and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines and ithas particular reference to engines of the types kn'ownas' two-cycle and four-cycle. Engines of this character as ordinarily constructed have been operating ata disadvhntage for the reason that a portion of the gases generated by each explosion would assemble in the space adjacent to the sparkplug, and would be only imperfectly displaced from said space by the fresh explosive mixture entering the cylinder prior to each explosion, the result being that the sparkplug would frequently fail to ignite the explosive mixture owing to the presence of an intermediate layer of non-combustible gases and products of combustion. f

The present invention has for its object to provide an improved construction whereby,

immediately subsequent), to each explosion,

, fresh explosive mixture fshall be supplied to the space immediately adjacent to the spark plug from which the non-combustible gases will thus be driven, thereby insuring certainty of ignition and avoiding the loss of power resulting from missing of the ignition of the explosive mixture.

Further ends'of the invention are to simplify and improve the general construction and operation of the parts comprising the With these and other ends in view Which- Will readily appear as the nature of the in-; vention is better understood, the same consists in the improved construction and'novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed out in the claim.

In the accompanying drawings has been illustrated a simple and preferred form of he-invention; it being however understood t at no'limit-ation is necessarily made to the precisestructural details therein exhibited, but that changes, alterations and modifications within the scope of the invention may be resorted to whengdjesired, o

n said drawingthe single figure repre- Specific'ation of Letters Patent. Application filed August 6, 1909.

lar passage C connects tailed construction ball check Patented Dec. 2c, 1910. Serial No. 511,587. 1

sents a sectional elevation ofa portion of a cylinder of an internal combustion engine constructed in accordance with the invention.

The cylinderlfi which is constructed with the customary cooling chambers 6 is provided with a threaded aperture 7 wherein is seated the spark plug B which in the present instance comprises a specially constructed casing 8 having a chamber 9 with which a laterally extending nipple 10 is suitably connected; said nipple being equipped with a check valve 11 shown in the present instance as consisting of a ball valve opening in the direction of the "chamber 9. A tubuthe nipple -10 with the transfer passage 12 through which the explosive mixture is introduced into the upper end of the cylinder. For convenience of attaching the tube C, a nipple 14 may be threaded into the cylinder to connect with the passage 12; and the tube C may be provided with terminal flanges 15 secured in the nipples l0 and 1e by means of bushings 1'6. It will however be understood that/ the demay be considerably varied without departing from thef' 'spirit of the invention or from the scope off'the claim. W'hen the piston D' on its downward stroke allows the pressure in the cylinder to fall below that in the base or crank case, a small quantityof pure explosive mixture is forced from the passage 12 through the tube G and into the chamber 9 where it displaces the burned. gases, leaving the chamber or pocket filled with an absolutely pure mixture which will not. become adulterated 'with any products of combustion left in the cylinder. The.

11 prevents the mixture being forced back through the tube C during the-compression stroke. Each, compression stroke finds the points of the spark plug surrounded by a layer of pure explosive mixture which is very easily ignited and which in turn willfire a very poor mixture in the firing chamber 9.

- In the two-cycle engine asheretofore constructed it has been found impossible to throttle the engine to any extent without its missing or skipping badly owing to the large quantity'of burned gases left in jthe cylinder subsequent to each explosion being mixed with a relatively small charge (of-incomingexplosive mixture, and the heat of the spark being insufficient to fire the mixture thusadulterated under ordinary conditions.

Practicallythe same difficulty applies'to engines of the four-cycle type.

The present invention not only eliminates the missing or skipping and the loss of power 5 consequently upon, but it allows the engine to be successfully operated with apoor or leaner mixture, thus effecting a considerable saving in fuel.

It is obvious that the more the engine is throttled, the more mixture in proportion to the entire charge will pass through the tube 0 and into the chamber 9, thus rendering the action of the device positive under all conditions of throttling. In a four-cycle engine,the intake end of the tube C may be connected withthe intake pipe or manifold.

Instead of the special spark plug herein shown, the device may be constructed of an;

ordinary spark plug combined with a special the charge adjacent .to the 'sparkplug may. be formed in the wall of the cylinder. These and other 'modifications obviously come and having a "alved fitting; or the'pocket or chamber to receive In an internal combustion engine, a cylinder having a transfer passage, a spark plug threadedinto the end of the cylinder and having a pocket formed adjacent thereto, a nipple threaded into the spark plug passage, a nipple threaded into the cylinder and opening into the transfer passage through which explosive mixture is introduced into the upper end of the cylinder, and a tube connecting the two nipples toconv'eya portion of each explosive plug.

testimony whereof I afi'lx my signature in presence of two witnesses.

ARTHUR H. VVEBBER.

. Witnesses:

JOHN MESKILL,

RICHARD MEARLS.

charge to'-the direct vicinity of thespark I

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