US1443010A - Oil-baffle plate - Google Patents

Description

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'N. P. DAVIS.

OIL BAFFLE PLATE.

Jan 1923;

FILED MAR. 26,1921- Patented its. aa, ieaa.

NELON P. DAVIS, OF TERRY, MISSISSIPPI.

OIL-BAFFLE PLATE.

Application filed March 26, 1921. Serial No. 455,871.

T 0 aZZ whom it may concern Be it known that l, NELoN P. DAVIS, a citizen oi the United Fitates, residing at Terry, in the county of Hinds, State oi? Mi sissippi, have invented certain new and useful Improvements in Oil-Battle Plates; and I do hereby declare the following to be a full, clear, and exact description of the in.- vention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to oil battle devices to be used in connection with internal combustion or other engines employingthe splash system of lubrication, the primary object of the invention being to provide means of Simplified and improved nature for preventing an excess oi: oil being thrown from the crank case to the engine cylinders,

yet permitting of suiiicient oil being dis tributed to the latter to insure thorough and proper lubrication. a

A further and particular object of the invention is to provide baiiie plates for use in connection with the motor for the purposes specified, which areof extremely simple construction and of inexpensive manufacture, which may be readily applied to engines now in use without alteration or change in any of the construction of the latter; which are adaptable to engines of various types, which areot such construction as to be formed and properly fitted to irregularities in each engine casing, and which may be readily applied to the motor of any ordinary mechanism.

Withthese objects in view, together with others which will appear as the description proceeds, the invention resides in the novel construction, combination and arrangement of parts, all as will be described more fully hereinafter, illustrated in the drawings, and particularly pointed out in the claims.

In the drawings:

Figure 1 is a vertical transverse sectional view taken through an engine of conventional design and illustrating the application thereto'oit a baffleplate embodying the invention.

Figure 2 is a'tragmentary sectional view taken horizontally through a part of the engine casing and illustrating the baiile plate in plan.

Figure 3 is a detail perspective view' of one of the battle plates.

Figure 4 I is a fragmentary sectional view taken vertically through a portion of a conventional engine and showing certain wings of the baiile plate bent upwardly and away -troni the cam shaft.

Figure 5 is a fragmentary sectionaldetail View on the line 5-5 of Figure 2.

Referring now more particularly to the drawing, .5 indicates generally the casing of the engine, the latter in the present instance being an internal combustion motor, but it will be understood that the device of my invention is not necessarily limited to use in connection with such motors as it may be very eiiiectively employed with other types of engines and power plants. This casing includes the cylinder portion 6 containing piston 7 the latter being connected by pitman 8 with an arm of crank shaft 9, disposed within the crank case of the motor, all as will be readily understood. As the motor operates, the oil in the wellat the bottom of crank case is thrown or splashed upwardly so as to lubricate the pistons and cylinders, cam shaft 10 and other movable parts enclosed by the casing, and it very often happens that the oil, thus splashed is too freely distributed within the casing] whereby excess amounts of oil are permitted to enter the combustion chamber of the cylinder and thereby impede the power of the engine and foul the spark plugs. The device of my invention includes a battle plate or plates disposed between the pistons of the engine and the crank shaft, to intercept an appreciable quantity of: the oit splashed. by the cranksand deflect such oil back into the oil well, thus overcoming the possibility ofthe cylinders becoming fouled'withlubrieating-oil.

-The battle plates of my invention com prise baseor body portions indicated at 11,, formed preferably of a substantially heavy rigid metal, one end of the plate being down-- turned or offset, as at 12, to receive retaining screws or bolts 18 for rigidly securing the base to one of the'inner walls oi the enginecasing. In the present instance. the base portion 11 is secured to that sideof the casing opposite to the cam shaft. and

the said member 11 is provided with transversely disposed" slots or notches lfi spaced apart proper distances to receive and loosely accommodate the pitrnen connecting the pistons with the cranks otcranlr shaft 9. The

apart Proper distancesin'order that 'a re Cit cess may be provided for each of the pitmen of the engine. The base or body 11 may be made in one continuous strip, it desired, extending longitudinally throughout the length of the -engine casing, or the body may be made in two or more sections, all of similar construction, and fitted together and bolted within the casing so as to have the appearance and function of one continuous base. t will-be observed that the width of the base plate is such that the free ends thereof terminate an appreciable distance inwardly from the cam shaft and its associated mechanism.

Projecting inwardly into each of the slots or notches 14- of the base or body and outwardly from the free end oi the latter are deflector members indicated at 15. These deflector members are made of flexible material, such as thin tin, and project into the slots 14 a comparatively short distance. The deflector members 15 at the free edges of the plate are of such length as to extend approximately to the wall of the engine casing opposite to which the base members 11 are bolted and the said end deflectors or baflies, indicated at 16, are of such width as to meet at their adjacent edges, as shown. By constructing the deflector portions of the baliles in the manner specified, it is obvious that they may be shaped so as to closely fit with projections or other irregularities in the engine casing or about any of the movable parts of the motor, certain portions of the deflectors being cut or slitted as at 17 to facilitate the bending and fitting operation. The battle members defining the slots 14 are to be bent downwardly in the general direction of the crank case, and have their tree edges disposed so as to comfortably clear the pit- .men 8, allowing tree unimpeded movement of the latter and yet lying close to the sides of the same. The end deflectors 16 are shaped so as to engage or substantially engage with the remote wall of the engine casing, and as the lateral edges of these deflector members meet each other it is obvious that great quantities of oil will be prevented be ing thrown to the upper part of the casing.

At the outer ends of the base or body members 11, baflle fingers or plates 18 are provided, the same being flexible or pliable to adapt themselves to any irregularities in the end walls of the engine casing. The flexible deflector members may be formed of any suitable pliable material, such, as has been heretofore stated, as thin tin, and these deflector members may be made in any number of pieces or sections as desired. It may be toundexpedient, however, to construct these balfle members all in one piece, as by stamping, and then securing the same .uponthe base or body members 11. The inner ends of the metal plates constituting the deflectors, Wlll constitute a connector for the various portions, and the body of the dcflector members may be secured to the base 11 by means of rivets 20.

By constructing the baflle members in the manner specified, the base members 11 will possess suilicient rigidity to properly support the flexible baflie or deflector elements, and the latter may be so shaped as to provide substantially a partition wall between the crank case and the lower portion of the engine cylinders, suflicient room being left or provided for the free unimpeded operation of the movable parts of the engine. The downturned edges oi the deflectors 15 will catch the oil thrown upwardly by the cranks, and will direct it down into the oil well. The end deflector 16 will prevent oil being thrown against the cam shaft and gaining access to the engine cylinders, while the said cam shaft will receive suflicient lubrication from the drip of the engine cylinders. Should it be found that the flexible deflector members too snugly accommodate the movable parts, thus preventing proper lubrication of the engine parts, they may be bent or deflected backwards so as to allow more space for the lubricant to pass.

By the use of a battle device so constructed, it is obvious that the oil pressure in the lubrieating system of the engine may be raised appreciably, to insure proper lubrication of all of the bearings, and yet such increased pressure will not increase the amount of lubricant delivered to the pistons and cylii'idcrs. By thus limiting the amount of oil supplied to the cylinders and pistons, it is apparent that leakage of the oil past the piston rings and into the upper portions of the cylinders, in excessive quantities, will be precluded, whereby :t'ouling ol the cvlinders and the spark plugs, and acciunulatious of excess oil upon the piston heads will be overcome.

\Vhile the above is a description of the invention in its preferred form, it will be understood that the invention is not to be limited thereto, as various changes in the minor ('letails of construction and, arrangement of parts may be resorted to without departing from the spirit of the invention as defined by the claims.

lVhat is claimed is:

1. In baflle device for engines, a base plate formed of substantially rigid material and having an attaching flange along one edge, and being transversely slotted, a sheet of flexible material carried by said plate and being transversely slotted in registry with the slotted portion of the base plate, the walls of the slots of said sheet being formed with augularly extending deflector blades projecting into the slots of the base plate, the said sheet projecting beyond certain edges of said base plate and being extended angularly.

2. As an article of manufacture, a ba-flie l l O In testimony whereof, I affix my signature, in the presence of two Witnesses.

NELON P. DAVIS.

Witnesses:

E. M. ROWAN, L. C. DAVIS.

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