US1117933A - Internal-combustion engine. - Google Patents

Description

0. E. WEIDNER.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 21, 191-4.

Patented Nov. 17, 1914.

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2 SHEETS- 0. E. WEIDNER. iNTERNAL COMBUSTION ENGINE.

APPLICATION FILED MAY 21, 1914.

1, 1 1 7,933. Patented Nov. 17, 1914.

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Application filed L117 :11. 191d. Serial lie, lllbfikh.

To (175 w/lom, it may concern:

Be i known that I, Dram E, i /mouse, a citizen or he United States, residing at Arcola, in rne county of Douglas and state of Illinois, have invented certain new and we fill Improvements in internal-Combustion Engines; end I do declare the following lo be a full, clear, and exact description of the invention, such as will enable others skilled in the to which is appertains to make and use It? s same.

This invention relates to internal combuslion engines and more particularly to the class of en ines of two-cycle explosive type in which ins explosive mixture 1s first compressed before ignition.

The object of the invention is to provide simple and eiiici-en'i means for injectine the explosive inislure into the combustion c amber and "which will operate to thoroughly clean "the combustion chamber of dead or spent gases whereby a rhorough carburation of the explosive chamber is obtained.

With the above and other objects in view, the invention consists of certain novel features of conseruction, combination and arrangement of parts as will be more fully escribed and claimed.

In the accompanying drawings: Figure 1 represents a vertical sectional view of an engine consiruched in accordance with this invention and with the piston at its extreme limit of its compression stroke; Fig. 2 is a similar view with "the piston at the limit of iis working stroke.

in the embodiment illustrated, a cylinder 1 is shovvn having an enlarged lower portion 2 and in which a correspondingl shaped piston 3 is designed to o erate and between the laterally extending s oulders 2' and 3' of sold cylinder and pistonis formed a combusiion chamber i bovin the usual sparking plug 5 extending iliereinto near the upper end of the combustion chamber. The piston 23 is made hollow with a transverse partition 6 spaced a suieable distance from ills ouier end to form a gas receiving piston chamber 7'. This chamber 7 has an opening 8 in one side Wall adjacent the partition 6 for a purpose to be described. At the 11 per or outer end of the reduced portion 0 the cylinder 1 which consii'utes the compreseach chamber, is formed a by-pass 9 designed lo cooperate with the opening 8 in the piston chamber at predetermined intervals as will he hereinafter described.

The compression cylinder 1 is provided i ntermediaiely oi its ends with an inlet 10 I01 lhe exploshe mixture which inlet communicates with a carburetor 11 of any suitable construction.

'lhe inner portion 2 of the cylinder 1 which constitutes the combustion chamber is provided near irs lower end Willi an exhaust port 12 for spent gases.

The piston 3 is provided with suitable seats 13 in the periphery of its larger poriron to receive packings for insuring a fluid t ght connection between this portion of the piston and she Walls of the combustion cyllnder such as are'usually employed in apparatus of this character. The smaller and larger POi'lJlOi'ii-l oi the cylinder 1 which form the compression and conibussion cylinders, may be made integral as shown or rigidly connected in any suitable manner. The double integral pislon is machined to fit both of said cylinders and lhe openinl 8 of the chamber 7 at the solar end of said piston 13 positioned to register with the lower end of the by pass 9 when she piston is at or near the extreme limit of its compression stroke as shown in Fig. l and to register with the combustion chamber when said piston is at the limit of its working stroke as shown in 2. Apislon pin connection 14 is shown clamped into place on the inside of the pision and a packing groove 13 is arranged near the lower end of the compression cylinder to receive a packing to prevent leakage from the lower cylinder into the upper.

In the use of this engine, when the piston 3 is at the limit of its inward or Working stroke as shown in 2, all of the exhaust or spent gases have been forced out through the exhaust pori; i2 and she explosive mixture from the carburetor l1 rushes into ihe compression cylinder above the piston 3 because of the vacuum which is formed in said cylinder by the inward stroke of the piston. Then as the pision moves outward, this mixlure is compressed between the outer end of the com ression chamber and the outer end of the piston until the piston nearly reaches the limit of its outer stroke when the auxiliary' inlet port 8 is brought inio communication wish the lay-pass 9 and she gas in the compression chamber rushes into the piston chamber 7 and when the piston moves in word into the position shown in Fig. 2, the auxiliary inlet 8 regisoers with the combustion chamber 4 and the compressed gas in the piston. chamber rushes out into the combustion chamber forcing out the exhaust or spent gases and is again compressed in the combustion chamber on the outer stroke of the piston and is fired in the ordinary manner by the sparking plug which is so timed for this purpose. As this operation must be repeated at each revolution or double stroke of the piston, it produces a two stroke or two cycle engine and because of the packings of the cylinders and the absence of crank case compremion, it is obvious that this engine may be used as a rotary motor.

I claim as my invention:

1. In an internal combustion engine, the combination of a cylinder having a smaller axial extension forming a compression chamber, a piston working in said cylinder and provided with an axial extension working in the compression chamber, the outer end of said compression chamber having a by-pass formed therein, a chamber formed in the outer end of said piston and having a passage positioned to register with said by-pa'ss when the piston is nearing the limit of its compression stroke and for registering with the combustion chamber when it nears the limit of its working stroke.

2. In an internalcombu'stion engine, the combination of a cylinder having an axial extension of less diameter forming a compression chamber, of a power piston fitting the cylinder and having an axial extension fitting the compression chamber, said piston being hollow and provided near its outer end with a transverse partition forming a gas receiving chamber, said gas receiving chamber having an opening in one side wall thereof, the compression chamber being provided near its outer end with a by-pass adapted to register with the opening in the A iston chamber when the piston nearsthe imit of its compression stroke, said opening being also positioned to register with the combustion chamber when the piston nears the limit of its working stroke.

3. In an internal combustion engine, the combination of a cylinder having an axial extension of less diameter forming a compression chamber, of a power piston fitting the cylinder and having an axial extension fitting the compression chamber, said piston being hollow and provided near its outer end with a transverse partition forming a gas receiving chamber, said gas receiving chamber having an opening in one side wall thereof, the compression chamber being provided near its outer end with a by-pass adapted to register with the opening in the piston chamber when the piston nears the limit of its compression stroke, said opening being also positioned to register with the combustion chamber when the piston nears the limit of its working stroke, and a piston pin connection clamped into position on the inside of said piston.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit-

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