US1257419A - Internal-combustion motor. - Google Patents

Description

I. STIMPSON, In. INTERNAL COMBUSTION MOTOR;

APPLICATION FILED JULY 9. I917.

Patented Feb. 26, 1918.

JAM

THOMAS STIMPSON, JR, 011 ANAMOSA, IOWA.

INTERNAL-COMBUSTION MOTOR.

Specification of Letters Patent.

Patented Feb. 26, 1918.

Application filed July 9, 1917. Serial No. 179,505.

To all whom it may concern:

Be it known that I, THOMAS S'rrMPsoN, Jr., a citizen of the United States of America, and resident of Anamosa, in the county of Jones and State of Iowa, have invented certain new and useful Improvements in Internal-Combustion Motors, of which the following is a specification.

This invention relates to internal combustion motors and particularly to means for preventing fouling of the cylinders or the interior of the crank cases of such motors. v

An object of this invention is to provide novel means for collecting and discharging condensed fuel or excessive oil which might be present in the cylinders of internal combustion motors and also the collection and removal of any foreign substances such as cuttings or metal removed or dislodged from the interior of the cylinders, either from the pistons or the wall of the cylinder, thus making it possible to prevent fouling of the working parts of such a motor.

In motors, which depend upon kerosene as a basis of the explosive charge, the condensation of the fuel in the combustion chamber is rather great and this is particularly true with motors used on tractors where the load is varying frequently and the invention is particularly advantageous in connection with two cycle engines or motors of this type as it will prevent burning gases that may be forced past the rings from entering into the mixing chamber usually the crank case and igniting gases being mixed and compressed in the mixing chamber; it also prevents the passage of the explosive fuel into the crank case or to the lubricating oil reservoir thus preventing the thinning of the said oil as now frequently happens where no provision is made between the piston and cylinder for arresting the fuel.

I/Vhen compression becomes weak in two cycle engines their operation is greatly impaired since the gas. or fuel passing into the lubricating system further aids in reducing the compression which a heavier oil or unimpaired oil might produce, and so it is the purpose to so improve an internal cornbustion motor as to obviate compression troubles which arise by reason of the conditions set forth.

In the provision of means for collecting excessive lubricant condensed fuel and for.- eign substances which would have a tend ency to abrade or damage the piston rings or the cylinder walls, the internal combustion motors are increased in eliiciency and durability.

l/Vith the foregoing and other objects in wow, the invention consists in the details of construction, and in the arrangement and combination of parts to be'hereinafter more fully set forth and claimed. 7

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this specification wherein like characters denote corresponding parts in the several views, and ,in which Figure 1 illustrates a sectional view of an explosive motor with my invention applied thereto;

Fig. 2 illustrates a sectional view on a line corresponding with the line 2-2 of Fig. l, the base and parts associated therewith being omitted;

Fig. 3 illustrates an enlarged detail sectional view of a fragment of the cylinder; and

Fig. i illustrates a sectional view of a cylinder embracing a modification.

In these drawings 6 denotes a cylinder, the

wall of which is provided with a circumferential groove 7, the ends of which are spaced apart at the top of the cylinder so as to produce an unbroken cylinder wall 8, the purpose of which is to permit lubricant to find its way longitudinally of the cylinder over the surface which is uninterrupted. This construction is employed particularly in motors of the four cycle type.

The cylinder wall has a port 9 transversely thereof and the said port registers or communicates with the groove so that liquid or metal deposits reaching the said groove will gravitate to the port 9 and be .forced to the port 9 when the piston is being operated so that the cylinder is freed of such liquid and foreign substances.

A discharge pipe 11 communicates with the port 9 and may lead to any suitable receptacle or it may lead to a waste pipe.

The groove 7 r is preferably of the half-V type although under certain conditions, the groove may be of the V-type or U- haped or of any other configuration and grooves of different configuration would be regarded as mechanical equivalents.

A piston 12 of any appropriate type operates in conjunction with the cylinder and piston rings 15 are carried by the said piston. T he arrangement which is preferable is to have the groove in alineinent or even with the second from the rear end of a series of piston rings when the piston is in its forward position.

In the modification shown in Fig. l, the cylinder A has a circumferential groove B extending entirely around the cylinder but the groove preferably increases in deptl from the top to the bottom of the cylinder and in this type provision is made for the discharge of the liquid or foreign substance through the port C and the pipe D.

The device can be used in a motor when in a horizontal or inclined position it bein understood that the cylinder shall. be placed in position so that the deepest portion of the groove is lowermost to facilitate gravitation and the discharge of foreign substances.

Copies of this patent may be obtained for five cents each, by addressing the The construction, operation and advan tages will it is thought, he understood from the foregoing description, it being understood that various changes in the proportions and details may be made Without departing from the scope of the invention set forth in the appended claim.

I claim:

In an explosive motor having a cylinder inclined to the vertical, a circumferential drain groove therein, said groove terminating on each side of the top of the cylinder, said top Wall being uninterrupted to permit oil to pass the entire length of the cylinder, said groove lying in such relation to the piston that the groove is alway closed by the piston, and a pipe directly connected to the. lowest point in the groove whereby for eign matter is discharged from the cylinder.

THOMAS STIMPSON, J 1:.

Commissioner of Patents,

Washington, I G.

Images