US1399943A - Lubricating system - Google Patents

Description

e. W. DUNHAM.

LUBRICATING SYSTEM. APPLICAIION FILED JAN.8, 1919.

2 SHEETSSHEET l- Patented Dec 13, 1921.

.G. W. DUNHAM.

LUBRICATING SYSTEM. APPLICAIION FILED JAN. 8, 1919- 1,399,943. Patented Dec.13, 1921.

UNITED ES PATENT OFFICE. I

GEORGE W. DUNHAM, OF NEW YORK, Y., ASSIGN'OR TO THE MILIT'OR CORPORATION OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

LUBRIOATING SYSTEM.

Application filed January 8, 1919. Serial No. 270,108.

York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Lubricating Systems, of which the following is a full,

clear, and exact description, reference beinghad to the accompanylng drawings.

This invention relates to oil collecting, restraining, and separating means, especially suitable for use with gas engines, particularly those of motorcycles and other vehicles.

The general objects are to provide simple and reliable means for collecting the lubricating oil; and (in the present embodiment) for restraining itagainst flooding the crank case of the engine and leaking out as through the end crank shaft bearings when the engine is tilted, as when ascending or descending grades; and to providemeans for effectually separating sediment from the oil and which means is not likely to. become clogged, nor liable to get out of order; but i simple, durable, positive of action, and comparatively inexpensive.

Other and more specific ends in view are the production of a strong well shaped oil pan, preferably formed of a single piece of sheet metal, for application to the bottom of the engine casing; to'incorporate, preferably in the casing, deflectors which extend from the endsof the crank case inward until their inner ends are separated only a comparatively short distance from each other thereby to confine the oil within the oil pan when the engine .is tilted endwise materially; and to provide an oil trap or separating means for incorporation in the 'oil circulating system and'wherein a proper suction is maintained at all times so long. asthere is an appreciable amount of oil in the system, thereby insuring satisfactory lubrication.

To these several ends my invention may be defined as consisting of the combinations of elements set forth in the claims annexed hereto and illustrated in the accompanying drawings wherein Figure 1 is a central longitudinal section through the crank --case of an internal combustion engine having my invention incorporated therein and Fig. 2 a somewhat enlarged transverse \section on the line 22 of Fig. 1.

.The lower half of the crank Jase-the only portion of the engine structuae which Specification of Letters Patent. Patented Dec, 13, 1921.

it is necessary to show to fully illustrate my inventionis designated 1, and within the bottom thereof are situated deflectors 2 and 3, shown as formed integral with the crank case, and which extend from the end walls of the case inward and slightl downward until their inner ends approach each other quite closely at about the longitudinal center of the crank case. v

The lower endof the crank caseis provided with a flat peripheralgbead 5 to which is applied the horizontal flange 6 of the oil pan 7, the pan being preferably made of a single piece of sheet metal, formed to produce a shallow rectangular basin having its edge flared outwardly to producethe flange 6 and then downwardly to strengthen the flange. The flange 6 is rovided with holes that register with threaded apertures in the bead 5 for the reception ofretaining screws 8. A. gasket 10 of suitable packing material is interposed between the flange and bead. 4

Shown as situated near the-rear end of the oil pan i an oil trap which constitutes the separating means hereinbefore referred to. This trap, in its present form, consists of a cylindrical screen inclos'ure 12, haying a flange 13 applied to its lower end by means of which it is securedto the; bottom of the oil pan -7 The deflector 3 has an opening 14 above and substantially concentric with the screen inclosure 12 within which is fitted an inverted sheet metal cup 15, the cylindrical wall 16 whereof descends about the inclosure 12 until its lower end is spaced only a shortdistance above'the bottom of the oil pan. Where the cylindrical wall of the cup joins the circular wall 17 thereof, it is flared outward and crimped against the circular wall to produce a flange adapted to be clamped or confined between .the upper surface of the deflector 3 and a ring 18 that is secured to the thickened annular portion material of the wall being turned upward about the tube for attachment thereto. The lower end of the tube is cut diagonally and the lowest point thereof is spaced only a short distance from the bottom of the oil pan. The tube 21 leads to an oil pump (not shown) such as are common to engines of the class herein referred ,to, and whlch acts to Suckthe oil from within the screeniuclosure 12. After the oil has been circulated through the lubricating system of the engine, it is thrown off and drains down into the crank case and is conveyed by the deflectors 2 and 3 to the oil pan 7 in which it is collected and from which it is drawn into the screen inclosure 12. \Vhen the screen is free from sediment, the oil flows inward through the lower portion thereof; but as the sediment collects about the screen and clogs it from its lower end gradually upward, the oil is compelled to flow upward between the wall 16 and screen by reason of the facts that the cup 15 is air tight and the Wall 16 thereof extends below the minimum oil level, so that the exposure of oil within the lower-end of the cup is subjected to the suction and is drawn upward thereby until it,finds access to the interior of the screen either through it, or over the upper edge thereof if the screen has been allowed to become clogged throughout the entire extent of its area.

Having thus described my invention what I claim is 1. In a separator, the combination of an inclosure 12, a suction duct 21 having its receiving end within said inclosure, and a substantially fluid tight casing 16 spaced from and inclosing one end and a portion of the sides of said inclosure.

2. In a lubricating system of the character.

set forth, the combination of two substantially horizontal walls spaced one above the 0th r, an inclosure supported by the lower wal a suction duct-having its receiving end disposed within said inclosure, and a casing carried by the upper wall and extending downward over the inclosure.

3. In a lubricating system of the character set forth, the combination of two substantially horizontal walls spaced one above the other,-a screen inclosure supported by the lower wall, a suction duct having its receiving end disposed within the, inclosure, the upper wall having an aperture above the inclosure, and an open bottom casing supported within said aperture and extending down over the inclosure.

4:. In a lubricating system of the character set forth, the combination of two substantially horizontal walls spaced one above the other, of an inclosure supported by the lower wall, a suction duct having its receiving end disposed withinthe inclosure, the upper wall having an aperture above the inclosure, and an open bottom casing supported within said aperture and extending down over the inclosure, said casing being provided with a peripheral flange resting Wall.

5. In a lubricating system of the character set forth, the combination of two substantiallyhorizontal walls spaced one above the other, of aninclosure supported by the lower upon the upper inclosure 12, a casing 16 spaced from and extending over the top of said inclosure and down about the inclosure into proximity to the bottom thereof, and a suction tube 21 projecting into the casing through the top wall thereof and having its receiving end disposed within the inclosure.

7 A separator comprising an open top inclosure 12, a suction duct 21 having its receivingend disposed therein, and a casing extending over the top and down around the said inclosure and spaced therefrom.

8. In combination with the crank case of an engine, said crank case having a supporting element situated in thebottomthereof,

the crank case, an inclosure within and carried by the oil pan, a casing member carried by the aforesaid supporting element and sustained thereby over and about the inclosure, the wall of the casing being spaced from that of the inclosure, and a suction duct having its receiving end disposed within the inclosure.

9. In combination with an engine, an oil pan removably attached to the bottom of the engine crank case, and a separatorcomprising two open ended casing elements one carried by the crank case and the other by the oil pan and which are'disposed in telescopic relation to each other when the oil pan is attached to the crank case.

10. The combination with an engine, of an oil pan applied to the crank case thereof, an inclosure within and carried b the oil pan, an open ended casing supporte by the crank case over and about the inclosure, and a suction tube carried by the engine'and extending downward through the top wall of the casing with its suction end disposed within the inclosure.

11. In a separator, the combination of a casing, a vertically disposed screen within the casing, a suction duct having its receiving end disposed within the casing on one side of the screen, the casing incorporating" an impervious wall spaced from the opposite side of the screen, the casing defining a fluidtight inclosure for said screen except for an interruption .of the aforesaid wall below the top of the screen.

In testimonywhereof, I hereunto afiix my signature.

GEORGE W. DUNHAM.

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